CN103753968A - Powder paving device for three-dimensional printing system and three-dimensional printing system - Google Patents

Abstract

The invention discloses a powder paving device for a three-dimensional printing system and the three-dimensional printing system with the powder paving device. The three-dimensional printing system comprises a work platform. The powder paving device comprises a first guide rail, a second guide rail, a sliding piece, a comb, a first rolling wheel, a second rolling wheel and a drive piece. The first guide rail and the second guide rail are arranged on the upper surface of the work platform at intervals. The comb is obliquely arranged on the sliding piece, and the lower edge of the comb is in contact with the upper surface of the work platform. The first rolling wheel is arranged on the first side of the comb, and the second rolling wheel is arranged on the second side of the comb. The drive piece is connected with the sliding piece. When the comb moves towards a termination position from an initial position, the first rolling wheel is in contact with the first part of the lower surface of the first guide rail, and the second rolling wheel is in contact with the first part of the lower surface of the second guide rail. The powder paving device has the advantages of being good in paving effect, high in paving efficiency, not prone to being damaged, long in service life and the like.

Description

Translated fromChinese

用于三维打印系统的粉末铺平装置和三维打印系统Powder laying device and 3D printing system for 3D printing system

技术领域technical field

本发明涉及一种用于三维打印系统的粉末铺平装置，还涉及一种具有所述粉末铺平装置的三维打印系统。The present invention relates to a powder leveling device for a three-dimensional printing system, and also relates to a three-dimensional printing system with the powder leveling device.

背景技术Background technique

利用激光或电子束扫描固化预置的粉末层、逐层制造三维物体的三维打印技术是一种新型的制造技术。典型的三维打印工艺有激光选区熔化和电子束选区熔化，其基本的工艺步骤包括：利用粉末供应与铺平系统将粉末材料在工作平台上铺展成薄层，然后激光或电子束在粉末上移动，选择性烧结或熔化粉末材料。以上步骤不断重复直至整个三维物体制造完成。The 3D printing technology that uses laser or electron beam scanning to solidify the preset powder layer and manufacture 3D objects layer by layer is a new type of manufacturing technology. Typical 3D printing processes include laser selective melting and electron beam selective melting. The basic process steps include: using the powder supply and paving system to spread the powder material into a thin layer on the working platform, and then the laser or electron beam moves on the powder , selective sintering or melting of powdered materials. The above steps are repeated until the entire three-dimensional object is manufactured.

在制造三维物体的过程中，激光或电子束在扫描熔化粉末层时经常会出现聚球、粉末飞溅等现象，导致已成形零件的上表面不平整。粉末铺平系统需要在这种环境中正常、稳定地工作。现有的粉末铺平系统采用刮板、辊子等刚性结构，粉末铺平系统在不平整的表面移动时容易被卡住，导致制造过程被迫中断，甚至使粉末铺平系统产生不可恢复的变形甚至折断，从而恶化后续的粉末铺平效果。In the process of manufacturing three-dimensional objects, when the laser or electron beam scans the molten powder layer, there are often phenomena such as ball gathering and powder splashing, which cause the upper surface of the formed part to be uneven. Powder paving systems need to function properly and reliably in this environment. The existing powder leveling system adopts rigid structures such as scrapers and rollers, and the powder leveling system is easily stuck when moving on an uneven surface, resulting in forced interruption of the manufacturing process, and even irreversible deformation of the powder leveling system Even break off, thereby deteriorating the effect of subsequent powder paving.

发明内容Contents of the invention

本发明旨在至少解决现有技术中存在的技术问题之一。为此，本发明的一个目的在于提出一种用于三维打印系统的粉末铺平装置。The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present invention is to provide a powder leveling device for a three-dimensional printing system.

本发明的另一个目的在于提出一种具有所述用于三维打印系统的粉末铺平装置的三维打印系统。Another object of the present invention is to provide a three-dimensional printing system with the powder leveling device for a three-dimensional printing system.

为了实现上述目的，根据本发明第一方面的实施例提出一种用于三维打印系统的粉末铺平装置，所述三维打印系统包括工作平台，所述粉末铺平装置包括：第一导轨和第二导轨，所述第一导轨和所述第二导轨间隔开地设在所述工作平台的上表面上，其中所述第一导轨的下表面的第一部分和所述第二导轨的下表面的第一部分均与所述工作平台在上下方向上间隔开；滑动件；梳子，所述梳子倾斜地设在所述滑动件上，所述梳子的下沿与所述工作平台的上表面接触；第一滚轮和第二滚轮，所述第一滚轮设在所述梳子的第一侧，所述第二滚轮设在所述梳子的第二侧；以及驱动件，所述驱动件与所述滑动件相连以便通过所述滑动件带动所述梳子在初始位置与终止位置之间移动，其中所述梳子在从所述初始位置向所述终止位置移动时，所述第一滚轮与所述第一导轨的下表面的第一部分接触，所述第二滚轮与所述第二导轨的下表面的第一部分接触。In order to achieve the above object, according to the embodiment of the first aspect of the present invention, a powder leveling device for a three-dimensional printing system is proposed, the three-dimensional printing system includes a working platform, and the powder leveling device includes: a first guide rail and a second Two guide rails, the first guide rail and the second guide rail are spaced apart on the upper surface of the working platform, wherein the first part of the lower surface of the first guide rail and the lower surface of the second guide rail The first parts are spaced apart from the working platform in the up and down direction; a slider; the comb is obliquely arranged on the slider, and the lower edge of the comb is in contact with the upper surface of the working platform; a roller and a second roller, the first roller is arranged on the first side of the comb, and the second roller is arranged on the second side of the comb; and a driving member, the driving member and the sliding member connected so as to drive the comb to move between an initial position and an end position through the sliding member, wherein when the comb moves from the initial position to the end position, the first roller and the first guide rail The first part of the lower surface of the second guide rail is in contact with the first part of the lower surface of the second guide rail.

根据本发明实施例的用于三维打印系统的粉末铺平装置通过将所述梳子倾斜地设在所述滑动件上，从而可以极大地减小所述梳子的梳齿在刮过不平整的表面时的变形应力，进而可以降低所述梳子的梳齿发生不可恢复的变形或折断的风险。而且，由于所述第一滚轮和所述第二滚轮在保持恒定的参考面上移动，因此可以使铺平得到的粉末层的厚度保持一致。因此，根据本发明实施例的用于三维打印系统的粉末铺平装置具有铺平效果好、铺平效率高、不易损坏、使用寿命长等优点。According to the powder paving device for a three-dimensional printing system according to an embodiment of the present invention, the comb can be greatly reduced when the comb teeth are scraped across an uneven surface by setting the comb obliquely on the slider. The deformation stress at the time can reduce the risk of irreversible deformation or breakage of the comb teeth of the comb. Moreover, since the first roller and the second roller move on a constant reference plane, the thickness of the powder layer obtained by paving can be kept consistent. Therefore, the powder leveling device for a three-dimensional printing system according to the embodiment of the present invention has the advantages of good leveling effect, high leveling efficiency, less damage, and long service life.

另外，根据本发明实施例的用于三维打印系统的粉末铺平装置还可以具有如下附加的技术特征：In addition, the powder paving device for a three-dimensional printing system according to an embodiment of the present invention may also have the following additional technical features:

根据本发明的一个实施例，所述梳子可枢转地设在所述滑动件上，所述粉末铺平装置还包括调节件，所述调节件可移动地设在所述滑动件上且与所述梳子接触以便调节所述梳子与所述工作平台的上表面的夹角的大小。由此可以使所述粉末铺平装置的结构更加合理，并且可以进一步提高铺平效果和铺平效率，进一步延长所述粉末铺平装置的使用寿命。According to an embodiment of the present invention, the comb is pivotably arranged on the sliding member, and the powder leveling device further includes an adjusting member, and the adjusting member is movably arranged on the sliding member and is in contact with the sliding member. The comb is in contact so as to adjust the size of the included angle between the comb and the upper surface of the working platform. Thus, the structure of the powder leveling device can be made more reasonable, the leveling effect and efficiency can be further improved, and the service life of the powder leveling device can be further extended.

根据本发明的一个实施例，所述梳子包括：本体，所述本体倾斜地设在所述滑动件上，所述本体与所述调节件接触；第一枢转轴，所述第一枢转轴设在所述本体上且可旋转地安装在所述滑动件上；第二枢转轴和第三枢转轴，所述第二枢转轴设在所述本体的第一侧，所述第三枢转轴设在所述本体的第二侧，所述第一滚轮安装在所述第二枢转轴上，所述第二滚轮安装在所述第三枢转轴上；和第一铺平部，所述第一铺平部设在所述本体上，所述第一铺平部上间隔开地设有多个第一梳齿，每个所述第一梳齿的下沿与所述工作平台的上表面接触。由此可以使所述梳子的结构更加合理。According to an embodiment of the present invention, the comb includes: a body, the body is obliquely arranged on the sliding member, and the body is in contact with the adjustment member; a first pivot shaft, the first pivot shaft is set on the body and rotatably mounted on the slider; a second pivot shaft and a third pivot shaft, the second pivot shaft is provided on the first side of the body, and the third pivot shaft is provided on the first side of the body On a second side of the body, the first roller is mounted on the second pivot shaft, the second roller is mounted on the third pivot shaft; and a first paving portion, the first The flattening part is provided on the body, and the first flattening part is provided with a plurality of first comb teeth at intervals, and the lower edge of each first comb tooth is in contact with the upper surface of the working platform . Therefore, the structure of the comb can be made more reasonable.

根据本发明的一个实施例，所述梳子还包括第二铺平部，所述第二铺平部设在所述本体上，所述第二铺平部相对所述第一铺平部远离所述初始位置，其中所述第二铺平部上间隔开地设有多个第二梳齿，每个所述第二梳齿的下沿与所述工作平台的上表面间隔预定距离。According to an embodiment of the present invention, the comb further includes a second flattening portion, the second flattening portion is provided on the body, and the second flattening portion is farther away from the first flattening portion than the first flattening portion. The initial position, wherein a plurality of second comb teeth are arranged at intervals on the second flattening part, and the lower edge of each second comb tooth is spaced a predetermined distance from the upper surface of the working platform.

通过在所述本体上设置所述第二铺平部且所述第二铺平部的第二梳齿的下沿与所述工作平台的上表面间隔预定距离，从而可以利用所述第二铺平部先对粉末进行初步铺平，即可以将粉末的推力分散到所述第一铺平部和所述第二铺平部上，由此可以减小所述梳子变形的风险。By providing the second flattening part on the body and the lower edge of the second comb teeth of the second flattening part is spaced a predetermined distance from the upper surface of the working platform, so that the second flattening part can be used The flat portion initially flattens the powder, that is, the pushing force of the powder can be distributed to the first flattening portion and the second flattening portion, thereby reducing the risk of deformation of the comb.

根据本发明的一个实施例，所述第二铺平部平行于所述第一铺平部。由此可以使所述梳子的结构更加合理。According to an embodiment of the present invention, the second flattened portion is parallel to the first flattened portion. Therefore, the structure of the comb can be made more reasonable.

根据本发明的一个实施例，相邻两个所述第二梳齿之间的间隙在所述梳子的移动方向上与所述第一梳齿相对。由于该间隙与所述第一梳齿相对，因此所述第一梳齿可以将漏出的粉末刮平，由此可以进一步提高所述粉末铺平装置的铺平效果。According to an embodiment of the present invention, the gap between two adjacent second comb teeth is opposite to the first comb teeth in the moving direction of the comb. Since the gap is opposite to the first comb teeth, the first comb teeth can scrape the leaked powder, thereby further improving the leveling effect of the powder leveling device.

根据本发明的一个实施例，所述用于三维打印系统的粉末铺平装置还包括：第一楔形块和第二楔形块，所述第一楔形块具有第一斜面，所述第二楔形块具有第二斜面；以及第一翻板和第二翻板，所述第一翻板可枢转地设在所述第一导轨的远离所述初始位置的端部且所述第一翻板的远离所述第一导轨的端面为第三斜面，所述第二翻板可枢转地设在所述第二导轨的远离所述初始位置的端部且所述第二翻板的远离所述第二导轨的端面为第四斜面，所述第三斜面支撑在所述第一斜面上，所述第四斜面支撑在所述第二斜面上。According to an embodiment of the present invention, the powder leveling device for a three-dimensional printing system further includes: a first wedge block and a second wedge block, the first wedge block has a first slope, and the second wedge block There is a second slope; and a first flap and a second flap, the first flap is pivotally arranged at the end of the first guide rail away from the initial position and the first flap is The end face far away from the first guide rail is a third slope, the second flipper is pivotally arranged at the end of the second guide rail far away from the initial position, and the end of the second flipper away from the The end surface of the second guide rail is a fourth slope, the third slope is supported on the first slope, and the fourth slope is supported on the second slope.

通过设置所述第一翻板、所述第二翻板、所述第一楔形块和所述第二楔形块，从而在所述梳子从所述终止位置移动到所述初始位置时无需与所述工作平台的上表面接触，由此可以防止所述梳子产生大变形甚至折断。By setting the first flap, the second flap, the first wedge and the second wedge, there is no need to communicate with the comb when it moves from the end position to the initial position. contact with the upper surface of the working platform, thereby preventing the comb from being greatly deformed or even broken.

根据本发明的一个实施例，所述第一翻板的上表面邻近所述第一导轨的上表面和所述第一楔形块的上表面，所述第一翻板的下表面邻近所述第一导轨的下表面，其中所述第一翻板的上表面、所述第一导轨的上表面和所述第一楔形块的上表面平齐，所述第一翻板的下表面与所述第一导轨的下表面平齐，所述第二翻板的上表面邻近所述第二导轨的上表面和所述第二楔形块的上表面，所述第二翻板的下表面邻近所述第二导轨的下表面,所述第二翻板的上表面、所述第二导轨的上表面和所述第二楔形块的上表面平齐，所述第二翻板的下表面与所述第二导轨的下表面平齐。由此可以使所述粉末铺平装置的结构更加合理，所述第一滚轮和所述第二滚轮在移动过程中更加平稳。According to an embodiment of the present invention, the upper surface of the first turning plate is adjacent to the upper surface of the first guide rail and the upper surface of the first wedge block, and the lower surface of the first turning plate is adjacent to the first The lower surface of a guide rail, wherein the upper surface of the first turnover plate, the upper surface of the first guide rail and the upper surface of the first wedge block are flush, the lower surface of the first turnover plate and the The lower surface of the first guide rail is flush, the upper surface of the second turnover plate is adjacent to the upper surface of the second guide rail and the upper surface of the second wedge block, and the lower surface of the second turnover plate is adjacent to the The lower surface of the second guide rail, the upper surface of the second turnover plate, the upper surface of the second guide rail and the upper surface of the second wedge block are flush, the lower surface of the second turnover plate and the The lower surface of the second guide rail is flush. Therefore, the structure of the powder leveling device can be made more reasonable, and the moving process of the first roller and the second roller is more stable.

根据本发明的一个实施例，所述梳子与所述工作平台的上表面的夹角为45度-85度。由此可以进一步减小所述梳子的梳齿越过障碍时的最大应力值，进一步降低所述梳子的梳齿发生不可恢复的变形或折断的风险。According to an embodiment of the present invention, the included angle between the comb and the upper surface of the working platform is 45°-85°. In this way, the maximum stress value when the teeth of the comb cross over obstacles can be further reduced, further reducing the risk of irreversible deformation or breakage of the teeth of the comb.

根据本发明的一个实施例，所述滑动件上设有螺纹孔，所述调节件螺纹配合在所述螺纹孔内，所述调节件的端部穿过所述螺纹孔且与所述梳子接触。由此可以使所述粉末铺平装置的结构更加合理，并且可以更加容易地、精确地调节所述梳子与所述工作平台的上表面的夹角α的大小。According to an embodiment of the present invention, the sliding member is provided with a threaded hole, the adjusting member is screwed into the threaded hole, and the end of the adjusting member passes through the threaded hole and contacts the comb . Therefore, the structure of the powder leveling device can be made more reasonable, and the angle α between the comb and the upper surface of the working platform can be adjusted more easily and accurately.

根据本发明第二方面的实施例提出一种三维打印系统，所述三维打印系统包括：工作平台；和粉末铺平装置，所述粉末铺平装置为根据本发明第一方面所述的用于三维打印系统的粉末铺平装置，其中所述第一导轨和所述第二导轨间隔开地设在所述工作平台的上表面上，所述第一导轨的下表面的第一部分和所述第二导轨的下表面的第一部分均与所述工作平台在上下方向上间隔开，所述梳子的下沿与所述工作平台的上表面接触。According to the embodiment of the second aspect of the present invention, a three-dimensional printing system is proposed, and the three-dimensional printing system includes: a working platform; The powder paving device of a three-dimensional printing system, wherein the first guide rail and the second guide rail are arranged on the upper surface of the working platform at intervals, and the first part of the lower surface of the first guide rail and the first guide rail The first parts of the lower surfaces of the two guide rails are spaced apart from the working platform in the up-down direction, and the lower edge of the comb is in contact with the upper surface of the working platform.

根据本发明实施例的三维打印系统通过设置根据本发明第一方面所述的用于三维打印系统的粉末铺平装置，从而具有铺平效果好、铺平效率高、不易损坏、使用寿命长等优点。The three-dimensional printing system according to the embodiment of the present invention is provided with the powder leveling device for the three-dimensional printing system according to the first aspect of the present invention, so that it has good leveling effect, high leveling efficiency, less damage, long service life, etc. advantage.

本发明的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本发明的实践了解到。Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

附图说明Description of drawings

本发明的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：The above and/or additional aspects and advantages of the present invention will become apparent and comprehensible from the description of the embodiments in conjunction with the following drawings, wherein:

图1是根据本发明实施例的用于三维打印系统的粉末铺平装置的结构示意图；1 is a schematic structural view of a powder paving device for a three-dimensional printing system according to an embodiment of the present invention;

图2是根据本发明实施例的用于三维打印系统的粉末铺平装置的结构示意图；2 is a schematic structural view of a powder paving device for a three-dimensional printing system according to an embodiment of the present invention;

图3是根据本发明实施例的用于三维打印系统的粉末铺平装置的结构示意图；3 is a schematic structural view of a powder paving device for a three-dimensional printing system according to an embodiment of the present invention;

图4是根据本发明实施例的用于三维打印系统的粉末铺平装置的结构示意图；4 is a schematic structural view of a powder paving device for a three-dimensional printing system according to an embodiment of the present invention;

图5是根据本发明实施例的用于三维打印系统的粉末铺平装置的梳子的局部结构示意图；5 is a schematic diagram of a partial structure of a comb used in a powder leveling device for a three-dimensional printing system according to an embodiment of the present invention;

图6是根据本发明实施例的用于三维打印系统的粉末铺平装置的梳子的局部结构示意图；6 is a schematic diagram of a partial structure of a comb used in a powder leveling device for a three-dimensional printing system according to an embodiment of the present invention;

图7是根据本发明实施例的用于三维打印系统的粉末铺平装置的梳子的结构示意图。Fig. 7 is a schematic structural view of a comb used in a powder leveling device of a three-dimensional printing system according to an embodiment of the present invention.

具体实施方式Detailed ways

下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本发明，而不能理解为对本发明的限制。Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本发明的描述中，除非另有说明，“多个”的含义是两个或两个以上。In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrally connected; it may be mechanically connected or electrically connected; it may be directly connected or indirectly connected through an intermediary, and it may be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

下面参考图1-图7描述根据本发明实施例的用于三维打印系统的粉末铺平装置40。如图1-图7所示，所述三维打印系统包括工作平台20，根据本发明实施例的用于三维打印系统的粉末铺平装置40包括第一导轨401、第二导轨402、滑动件403、梳子404、第一滚轮405、第二滚轮406和驱动件（图中未示出）。The following describes apowder leveling device 40 for a three-dimensional printing system according to an embodiment of the present invention with reference to FIGS. 1-7 . As shown in Figures 1-7, the three-dimensional printing system includes a workingplatform 20, and apowder paving device 40 for a three-dimensional printing system according to an embodiment of the present invention includes afirst guide rail 401, asecond guide rail 402, and aslider 403 , acomb 404, afirst roller 405, asecond roller 406 and a driving member (not shown in the figure).

第一导轨401和第二导轨402间隔开地设在工作平台20的上表面201上，其中第一导轨401的下表面的第一部分和第二导轨402的下表面的第一部分均与工作平台20在上下方向上间隔开。梳子404倾斜地设在滑动件403上，梳子404的下沿与工作平台20的上表面201接触以便对工作平台20的上表面201上的粉末2进行铺平。换言之，梳子404相对工作平台20的上表面201倾斜设置，即梳子404与工作平台20的上表面201的夹角α大于0度且小于等于90度。也就是说，梳子404倾斜地设在滑动件403上是指：梳子404相对于工作平台20的上表面201来说是倾斜的，即梳子404相对工作平台20的上表面201倾斜地设在滑动件403上。其中，上下方向如图1-图5和图7中的箭头A所示。Thefirst guide rail 401 and thesecond guide rail 402 are arranged on theupper surface 201 of thework platform 20 at intervals, wherein the first part of the lower surface of thefirst guide rail 401 and the first part of the lower surface of thesecond guide rail 402 are all in contact with thework platform 20 spaced apart in the vertical direction. Thecomb 404 is obliquely arranged on the slidingmember 403 , and the lower edge of thecomb 404 is in contact with theupper surface 201 of the workingplatform 20 so as to spread thepowder 2 on theupper surface 201 of the workingplatform 20 . In other words, thecomb 404 is inclined relative to theupper surface 201 of the workingplatform 20 , that is, the angle α between thecomb 404 and theupper surface 201 of the workingplatform 20 is greater than 0 degrees and less than or equal to 90 degrees. That is to say, that thecomb 404 is obliquely arranged on theslider 403 means that thecomb 404 is oblique relative to theupper surface 201 of the workingplatform 20 , that is, thecomb 404 is obliquely arranged on the sliding surface relative to theupper surface 201 of the workingplatform 20 .Item 403 on. Wherein, the up-down direction is shown by arrow A in Fig. 1-Fig. 5 and Fig. 7 .

第一滚轮405设在梳子404的第一侧，第二滚轮406设在梳子404的第二侧。所述驱动件与滑动件403相连以便通过滑动件403带动梳子404在初始位置与终止位置之间移动。其中，梳子404在从所述初始位置向所述终止位置移动时，第一滚轮405与第一导轨401的下表面的所述第一部分接触，第二滚轮406与第二导轨402的下表面的所述第一部分接触。Thefirst roller 405 is arranged on the first side of thecomb 404 , and thesecond roller 406 is arranged on the second side of thecomb 404 . The driving member is connected with the slidingmember 403 so as to drive thecomb 404 to move between the initial position and the final position through the slidingmember 403 . Wherein, when thecomb 404 moves from the initial position to the end position, thefirst roller 405 is in contact with the first part of the lower surface of thefirst guide rail 401, and thesecond roller 406 is in contact with the lower surface of thesecond guide rail 402. The first portion contacts.

下面参考图1-图4描述根据本发明实施例的用于三维打印系统的粉末铺平装置40的工作过程。在图1中，粉末铺平装置40位于所述初始位置。当需要对工作平台20的上表面201上的粉末2进行铺平时，所述驱动件通过滑动件403带动梳子404从所述初始位置向所述终止位置移动（图1中的箭头示出了梳子404的移动方向）。由于梳子404的下沿与工作平台20的上表面201接触，因此可以将工作平台20的上表面201上的粉末2铺平（铺平后的粉末2如图2所示）。The following describes the working process of thepowder leveling device 40 for a three-dimensional printing system according to an embodiment of the present invention with reference to FIGS. 1-4 . In FIG. 1 thepowder leveling device 40 is in said initial position. When thepowder 2 on theupper surface 201 of the workingplatform 20 needs to be leveled, the driving member drives thecomb 404 to move from the initial position to the end position through the slider 403 (the arrow in FIG. 404 direction of movement). Since the lower edge of thecomb 404 is in contact with theupper surface 201 of the workingplatform 20 , thepowder 2 on theupper surface 201 of the workingplatform 20 can be paved (thepowder 2 after being paved is shown in FIG. 2 ).

具体而言，三维打印系统可以包括成形缸，所述成形缸可以包括缸体和可上下移动地设在所述缸体内的活塞，其中所述缸体与工作平台20相连，所述缸体的上表面与工作平台20的上表面平齐。所述成形缸可以是已知的，且所述成形缸与工作平台20可以通过已知的方式相连，这与本发明的发明点无关，在此不再详细地描述。在本发明的一个具体示例中，工作平台20上可以设有沿上下方向贯通工作平台20的容纳孔202，所述成形缸的上端可以容纳在容纳孔202内。Specifically, the three-dimensional printing system may include a forming cylinder, and the forming cylinder may include a cylinder body and a piston that can move up and down in the cylinder body, wherein the cylinder body is connected with the workingplatform 20, and the cylinder body The upper surface of the upper surface is flush with the upper surface of the workingplatform 20. The forming cylinder may be known, and the forming cylinder and the workingplatform 20 may be connected in a known manner, which has nothing to do with the inventive point of the present invention and will not be described in detail here. In a specific example of the present invention, the workingplatform 20 may be provided with anaccommodating hole 202 penetrating the workingplatform 20 in an up-down direction, and the upper end of the forming cylinder may be accommodated in theaccommodating hole 202 .

由于梳子404相对工作平台20的上表面201倾斜设置，因此可以极大地减小梳子404的梳齿在刮过不平整的表面时的变形应力，从而可以降低梳子404的梳齿发生不可恢复的变形或折断的风险，由此可以使铺平过程能够顺利地进行，不会被打断。Since thecomb 404 is arranged obliquely relative to theupper surface 201 of the workingplatform 20, the deformation stress of the comb teeth of thecomb 404 when scraping the uneven surface can be greatly reduced, thereby reducing the irreversible deformation of the comb teeth of thecomb 404. or risk of breaking off, thus allowing the paving process to proceed smoothly without interruption.

而且，在铺平粉末时，由于设在梳子404上的第一滚轮405和第二滚轮406以第一导轨401的下表面的所述第一部分和第二导轨402的下表面的所述第一部分为参考面滚动，并且粉末2不能在第一导轨401的下表面的所述第一部分和第二导轨402的下表面的所述第一部分上积累，因此可以保证该参考面的恒定。而且，当梳子404刮过障碍时，第一导轨401和第二导轨402向梳子404产生向下的压紧力，从而保证梳子404可以完全依靠梳齿的弹性变形越过障碍。由于该参考面可以保持恒定，因此梳子404不会被整体抬升，从而不会导致没有障碍的地方的粉末层变厚，即可以使铺平得到的粉末层的厚度保持一致。Moreover, when the powder is spread, the first part of the lower surface of thefirst guide rail 401 and the first part of the lower surface of thesecond guide rail 402 are formed by thefirst roller 405 and thesecond roller 406 arranged on thecomb 404. The reference surface is rolling, and thepowder 2 cannot accumulate on the first part of the lower surface of thefirst guide rail 401 and the first part of the lower surface of thesecond guide rail 402, so the constant of the reference surface can be guaranteed. Moreover, when thecomb 404 scrapes over an obstacle, thefirst guide rail 401 and thesecond guide rail 402 exert a downward pressing force on thecomb 404, thereby ensuring that thecomb 404 can completely rely on the elastic deformation of the comb teeth to overcome the obstacle. Since the reference surface can be kept constant, thecomb 404 will not be lifted as a whole, so that the powder layer in the place where there is no obstacle will not be thickened, that is, the thickness of the powder layer obtained by paving can be kept consistent.

根据本发明实施例的用于三维打印系统的粉末铺平装置40通过将梳子404倾斜地设在滑动件403上，从而可以极大地减小梳子404的梳齿在刮过不平整的表面时的变形应力，进而可以降低梳子404的梳齿发生不可恢复的变形或折断的风险。而且，由于第一滚轮405和第二滚轮406在保持恒定的参考面上移动，因此可以使铺平得到的粉末层的厚度保持一致。因此，根据本发明实施例的用于三维打印系统的粉末铺平装置40具有铺平效果好、铺平效率高、不易损坏、使用寿命长等优点。According to thepowder paving device 40 for a three-dimensional printing system according to the embodiment of the present invention, thecomb 404 is arranged obliquely on theslider 403, thereby greatly reducing the friction of the comb teeth of thecomb 404 when scraping the uneven surface. The deformation stress can further reduce the risk of unrecoverable deformation or breakage of the teeth of thecomb 404 . Moreover, since thefirst roller 405 and thesecond roller 406 move on a constant reference plane, the thickness of the powder layer obtained by paving can be kept consistent. Therefore, thepowder leveling device 40 for a three-dimensional printing system according to the embodiment of the present invention has the advantages of good leveling effect, high leveling efficiency, less damage, and long service life.

理论计算表明，梳子404与工作平台20的上表面201的夹角α越小，梳子404的梳齿在越过同样高度的障碍时的最大应力值越小。例如，当夹角α为65度时，梳子404的梳齿越过0.2毫米高的障碍时，梳子404的梳齿所受的最大应力值为梳子404垂直设在工作平台20的上表面201（即梳子404垂直于工作平台20的上表面201）时梳齿所受的最大应力值的13.4%，梳子404的梳齿越过0.6毫米高的障碍时，梳子404的梳齿所受的最大应力值为梳子404垂直设在工作平台20的上表面201时梳齿所受的最大应力值的31.8%。Theoretical calculations show that the smaller the angle α between thecomb 404 and theupper surface 201 of the workingplatform 20 is, the smaller the maximum stress value of the comb teeth of thecomb 404 will be when they cross an obstacle of the same height. For example, when the included angle α was 65 degrees, when the comb teeth of thecomb 404 crossed over a 0.2 mm high obstacle, the maximum stress value of the comb teeth of thecomb 404 was placed vertically on theupper surface 201 of the working platform 20 (i.e. When thecomb 404 is perpendicular to theupper surface 201 of the working platform 20), the maximum stress value suffered by the comb teeth is 13.4%. When thecomb 404 is vertically arranged on theupper surface 201 of the workingplatform 20, it is 31.8% of the maximum stress value suffered by the comb teeth.

有利地，梳子404与工作平台20的上表面201的夹角α可以是45度-85度。由此可以进一步减小梳子404的梳齿越过障碍时的最大应力值，进一步降低梳子404的梳齿发生不可恢复的变形或折断的风险。Advantageously, the angle α between thecomb 404 and theupper surface 201 of the workingplatform 20 may be 45°-85°. In this way, the maximum stress value when the teeth of thecomb 404 cross over obstacles can be further reduced, further reducing the risk of unrecoverable deformation or breakage of the teeth of thecomb 404 .

进一步有利地，梳子404与工作平台20的上表面201的夹角α可以是65度。由此可以进一步减小梳子404的梳齿越过障碍时的最大应力值，进一步降低梳子404的梳齿发生不可恢复的变形或折断的风险。Further advantageously, the included angle α between thecomb 404 and theupper surface 201 of the workingplatform 20 may be 65 degrees. In this way, the maximum stress value when the teeth of thecomb 404 cross over obstacles can be further reduced, further reducing the risk of unrecoverable deformation or breakage of the teeth of thecomb 404 .

如图1-图4所示，在本发明的一些实施例中，梳子404可以可枢转地设在滑动件403上，粉末铺平装置40还可以包括调节件407，调节件407可以可移动地设在滑动件403上，且调节件407可以与梳子404接触以便调节梳子404与工作平台20的上表面201的夹角α的大小。由此可以使粉末铺平装置40的结构更加合理，并且可以进一步提高铺平效果和铺平效率，进一步延长粉末铺平装置40的使用寿命。As shown in FIGS. 1-4 , in some embodiments of the present invention, thecomb 404 can be pivotably arranged on the slidingmember 403, and thepowder paving device 40 can also include an adjustingmember 407, and the adjustingmember 407 can be movable. ground on the slidingmember 403 , and the adjustingmember 407 can be in contact with thecomb 404 so as to adjust the angle α between thecomb 404 and theupper surface 201 of the workingplatform 20 . Thus, the structure of thepowder leveling device 40 can be made more reasonable, the leveling effect and efficiency can be further improved, and the service life of thepowder leveling device 40 can be further extended.

有利地，滑动件403上可以设有螺纹孔，调节件407可以螺纹配合在螺纹孔内，调节件407的端部可以穿过螺纹孔且与梳子404接触。由此可以使粉末铺平装置40的结构更加合理，并且可以更加容易地、精确地调节梳子404与工作平台20的上表面201的夹角α的大小。Advantageously, the slidingmember 403 may be provided with a threaded hole, the adjustingmember 407 may be screwed into the threaded hole, and the end of the adjustingmember 407 may pass through the threaded hole and be in contact with thecomb 404 . Therefore, the structure of thepowder leveling device 40 can be made more reasonable, and the angle α between thecomb 404 and theupper surface 201 of the workingplatform 20 can be adjusted more easily and accurately.

下面以梳子404在左右方向上移动为例，描述利用调节件407调节梳子404与工作平台20的上表面201的夹角α的大小的过程，其中左右方向如图1-图4中的箭头B所示。梳子404的主体位于滑动件403的左侧，且梳子404位于调节件407的左侧，调节件407的左端可以穿过螺纹孔且调节件407的左端可以与梳子404接触。当需要增大梳子404与工作平台20的上表面201的夹角α时，可以旋转调节件407以便使调节件407向右移动。当需要减小梳子404与工作平台20的上表面201的夹角α时，可以旋转调节件407以便使调节件407向左移动。Taking thecomb 404 moving in the left and right direction as an example, the process of adjusting the angle α between thecomb 404 and theupper surface 201 of the workingplatform 20 by using the adjustingmember 407 is described below, wherein the left and right direction is as shown in arrow B in Fig. 1-Fig. 4 shown. The main body of thecomb 404 is located on the left side of theslider 403 , and thecomb 404 is located on the left side of theadjustment member 407 , the left end of theadjustment member 407 can pass through the threaded hole and the left end of theadjustment member 407 can contact thecomb 404 . When the angle α between thecomb 404 and theupper surface 201 of the workingplatform 20 needs to be increased, the adjustingmember 407 can be rotated so as to move the adjustingmember 407 to the right. When the angle α between thecomb 404 and theupper surface 201 of the workingplatform 20 needs to be reduced, the adjustingmember 407 can be rotated so as to move the adjustingmember 407 to the left.

如图1-图4所示，在本发明的一个实施例中，用于三维打印系统的粉末铺平装置40还包括第一楔形块408、第二楔形块409、第一翻板410和第二翻板411。第一楔形块408可以具有第一斜面4081，第二楔形块409可以具有第二斜面4091。第一翻板410可以可枢转地设在第一导轨401的远离所述初始位置的端部（例如第一导轨401的右端）且第一翻板410的远离第一导轨401的端面（例如第一翻板410的右端面）可以是第三斜面4101。As shown in FIGS. 1-4 , in one embodiment of the present invention, thepowder leveling device 40 for a three-dimensional printing system further includes afirst wedge 408, asecond wedge 409, afirst turning plate 410 and afirst turning plate 410. Two flaps 411. Thefirst wedge 408 may have afirst slope 4081 , and thesecond wedge 409 may have asecond slope 4091 . Thefirst flap 410 can be pivotally arranged on the end of thefirst guide rail 401 away from the initial position (for example, the right end of the first guide rail 401 ) and the end surface of thefirst flap 410 away from the first guide rail 401 (for example The right end surface of thefirst turnover plate 410 may be the thirdinclined surface 4101 .

第二翻板411可以可枢转地设在第二导轨402的远离所述初始位置的端部（例如第二导轨402的右端）且第二翻板411的远离第二导轨402的端面（例如第二翻板411的右端面）可以是第四斜面4111。其中，第三斜面4101可以支撑在第一斜面4081上，第四斜面4111可以支撑在第二斜面4091上。在对粉末2进行铺平时，梳子404从所述初始位置向第一导轨401的远离所述初始位置的端部和第二导轨402的远离所述初始位置的端部移动。Thesecond turning plate 411 can be pivotally arranged on the end of thesecond guide rail 402 away from the initial position (for example, the right end of the second guide rail 402 ) and the end surface of thesecond turning plate 411 away from the second guide rail 402 (for example The right end surface of thesecond turnover plate 411 may be a fourthinclined surface 4111 . Wherein, thethird slope 4101 can be supported on thefirst slope 4081 , and thefourth slope 4111 can be supported on thesecond slope 4091 . When leveling thepowder 2 , thecomb 404 moves from the initial position to the end of thefirst guide rail 401 away from the initial position and the end of thesecond guide rail 402 away from the initial position.

梳子404铺平粉末2后继续向所述终止位置移动，当第一滚轮405移动至第一斜面4081且第二滚轮406移动至第二斜面4091后，第一滚轮405沿第一斜面4081且第二滚轮406沿第二斜面4091向上移动，并且第一滚轮405可以顶开第一翻板410且第二滚轮406可以顶开第二翻板411（如图2所示）。如图3所示，当第一滚轮405移动到第一楔形块408的上表面4082且第二滚轮406移动到第二楔形块409的上表面4092时，梳子404位于所述终止位置，第一翻板410和第二翻板411恢复原状。此时，梳子404被向上抬升了一段距离，且梳子404不再与工作平台20的上表面201接触。After thecomb 404 paves thepowder 2 and continues to move to the end position, when thefirst roller 405 moves to the firstinclined plane 4081 and thesecond roller 406 moves to the secondinclined plane 4091, thefirst roller 405 moves along the firstinclined plane 4081 and the secondinclined plane 4091. Thesecond roller 406 moves upward along the secondinclined plane 4091 , and thefirst roller 405 can push away thefirst turning plate 410 and thesecond roller 406 can push away the second turning plate 411 (as shown in FIG. 2 ). As shown in Figure 3, when thefirst roller 405 moved to theupper surface 4082 of thefirst wedge 408 and thesecond roller 406 moved to theupper surface 4092 of thesecond wedge 409, thecomb 404 was in the end position, the first The turningplate 410 and thesecond turning plate 411 return to their original shape. At this time, thecomb 404 is lifted up for a certain distance, and thecomb 404 is no longer in contact with theupper surface 201 of the workingplatform 20 .

然后，所述驱动件可以带动梳子404从所述终止位置向所述初始位置移动，第一滚轮405依次经过第一楔形块408的上表面4082、第一翻板410的上表面4102和第一导轨401的上表面4013，第二滚轮406依次经过第二楔形块409的上表面4092、第二翻板411的上表面4112和第二导轨402的上表面4021。最后，第一滚轮405从第一导轨401的上表面4013上滚落且第二滚轮406从第二导轨402的上表面4021上滚轮，此时梳子404回到所述初始位置。Then, the driving member can drive thecomb 404 to move from the end position to the initial position, and thefirst roller 405 passes theupper surface 4082 of thefirst wedge block 408, theupper surface 4102 of thefirst turnover plate 410 and the first Theupper surface 4013 of theguide rail 401 and thesecond roller 406 pass through theupper surface 4092 of thesecond wedge block 409 , theupper surface 4112 of thesecond turnover plate 411 and theupper surface 4021 of thesecond guide rail 402 in sequence. Finally, thefirst roller 405 rolls down from theupper surface 4013 of thefirst guide rail 401 and thesecond roller 406 rolls from theupper surface 4021 of thesecond guide rail 402 , at this time thecomb 404 returns to the initial position.

如果梳子404在工作平台20的上表面201上进行回程移动，即梳子404在工作平台20的上表面201上从所述终止位置移动到所述初始位置，则梳子404容易顶住不平整的表面，导致梳子404产生大变形甚至折断。因此，通过设置第一翻板410、第二翻板411、第一楔形块408和第二楔形块409，从而在梳子404从所述终止位置移动到所述初始位置时无需与工作平台20的上表面201接触，由此可以防止梳子404产生大变形甚至折断。If thecomb 404 moves back on theupper surface 201 of the workingplatform 20, that is, thecomb 404 moves from the end position to the initial position on theupper surface 201 of the workingplatform 20, thecomb 404 will easily withstand the uneven surface. , causing thecomb 404 to be deformed or even broken. Therefore, by setting thefirst turnover plate 410, thesecond turnover plate 411, thefirst wedge block 408 and thesecond wedge block 409, there is no need to interact with the workingplatform 20 when thecomb 404 moves from the end position to the initial position. Theupper surface 201 is in contact, thereby preventing thecomb 404 from being greatly deformed or even broken.

有利地，第一斜面4081可以平行于第三斜面4101（第一翻板410未被顶起时），第二斜面4091可以平行于第四斜面4111（第二翻板411未被顶起时）。Advantageously, thefirst slope 4081 can be parallel to the third slope 4101 (when thefirst flap 410 is not lifted), and thesecond slope 4091 can be parallel to the fourth slope 4111 (when thesecond flap 411 is not lifted) .

如图1-图4所示，第一翻板410的上表面4102可以邻近第一导轨401的上表面4013和第一楔形块408的上表面4082，第一翻板410的下表面可以邻近第一导轨401的下表面。第一翻板410的上表面4102、第一导轨401的上表面4013和第一楔形块408的上表面4082可以平齐，第一翻板410的下表面可以与第一导轨401的下表面平齐。As shown in Figures 1-4, theupper surface 4102 of thefirst turning plate 410 can be adjacent to theupper surface 4013 of thefirst guide rail 401 and theupper surface 4082 of thefirst wedge block 408, and the lower surface of thefirst turning plate 410 can be adjacent to the second A lower surface of theguide rail 401 . Theupper surface 4102 of thefirst turnover plate 410, theupper surface 4013 of thefirst guide rail 401 and theupper surface 4082 of thefirst wedge block 408 can be flush, and the lower surface of thefirst turnover plate 410 can be flat with the lower surface of thefirst guide rail 401 together.

第二翻板411的上表面4112可以邻近第二导轨402的上表面4021和第二楔形块409的上表面4092，第二翻板411的下表面可以邻近第二导轨402的下表面。第二翻板411的上表面4112、第二导轨402的上表面4021和第二楔形块409的上表面4092可以平齐，第二翻板411的下表面可以与第二导轨402的下表面平齐。由此可以使粉末铺平装置40的结构更加合理，第一滚轮405和第二滚轮406在移动过程中更加平稳。Theupper surface 4112 of thesecond turning plate 411 may be adjacent to theupper surface 4021 of thesecond guide rail 402 and theupper surface 4092 of thesecond wedge block 409 , and the lower surface of thesecond turning plate 411 may be adjacent to the lower surface of thesecond guiding rail 402 . Theupper surface 4112 of thesecond turnover plate 411, theupper surface 4021 of thesecond guide rail 402 and theupper surface 4092 of thesecond wedge block 409 can be flush, and the lower surface of thesecond turnover plate 411 can be flat with the lower surface of thesecond guide rail 402 together. In this way, the structure of thepowder leveling device 40 can be made more reasonable, and thefirst roller 405 and thesecond roller 406 can move more stably.

如图1-图4和图7所示，在本发明的一些示例中，梳子404可以包括本体4041、第一枢转轴4042、第二枢转轴4043、第三枢转轴4044和第一铺平部4045。本体4041可以倾斜地设在滑动件403上，本体4041可以与调节件407接触。第一枢转轴4042可以设在本体4041上，且第一枢转轴4042可以可旋转地安装在滑动件403上。第二枢转轴4043可以设在本体4041的第一侧，第三枢转轴4044可以设在本体4041的第二侧，本体4041的第一侧与本体4041的第二侧可以相对。第一滚轮405可以安装在第二枢转轴4043上，第二滚轮406可以安装在第三枢转轴4044上。第一铺平部4045可以设在本体4041上，第一铺平部4045上可以间隔开地设有多个第一梳齿40451，每个第一梳齿40451的下沿可以与工作平台20的上表面201接触。每个第一梳齿40451相对工作平台20的上表面201倾斜地设置。由此可以使梳子404的结构更加合理。As shown in FIGS. 1-4 and 7 , in some examples of the present invention, thecomb 404 may include abody 4041 , afirst pivot shaft 4042 , asecond pivot shaft 4043 , athird pivot shaft 4044 and a first flattening portion. 4045. Thebody 4041 can be obliquely disposed on the slidingmember 403 , and thebody 4041 can be in contact with the adjustingmember 407 . Thefirst pivot shaft 4042 may be provided on thebody 4041 , and thefirst pivot shaft 4042 may be rotatably mounted on theslider 403 . Thesecond pivot shaft 4043 may be disposed on a first side of thebody 4041 , thethird pivot shaft 4044 may be disposed on a second side of thebody 4041 , and the first side of thebody 4041 may be opposite to the second side of thebody 4041 . Thefirst roller 405 may be mounted on thesecond pivot shaft 4043 and thesecond roller 406 may be mounted on thethird pivot shaft 4044 . Thefirst flattening part 4045 can be provided on thebody 4041, and thefirst flattening part 4045 can be provided with a plurality offirst comb teeth 40451 at intervals, and the lower edge of eachfirst comb tooth 40451 can be aligned with the workingplatform 20. Theupper surface 201 is in contact. Eachfirst comb tooth 40451 is disposed obliquely relative to theupper surface 201 of the workingplatform 20 . Thus, the structure of thecomb 404 can be made more reasonable.

第一枢转轴4042可以是两个，一个第一枢转轴4042可以设在本体4041的第一侧上，另一个第一枢转轴4042可以设在本体4041的第二侧上。There can be twofirst pivot shafts 4042 , onefirst pivot shaft 4042 can be set on the first side of thebody 4041 , and the otherfirst pivot shaft 4042 can be set on the second side of thebody 4041 .

有利地，本体4041可以是平板状，第一铺平部4045可以是平板状，且第一铺平部4045可以平行于本体4041。本体4041和第一铺平部4045都可以相对工作平台20的上表面201倾斜地设置。Advantageously, thebody 4041 may be flat, the first flattenedportion 4045 may be flat, and the first flattenedportion 4045 may be parallel to themain body 4041 . Both themain body 4041 and thefirst flattening portion 4045 may be disposed obliquely relative to theupper surface 201 of the workingplatform 20 .

在本发明的一个示例中，如图5和图6所示，梳子404还可以包括第二铺平部4046，第二铺平部4046可以设在本体4041上，第二铺平部4046可以相对第一铺平部4045远离所述初始位置。具体地，第二铺平部4046可以位于第一铺平部4045的右侧。其中，第二铺平部4046上可以间隔开地设有多个第二梳齿40461，每个第二梳齿40461的下沿可以与工作平台20的上表面201间隔预定距离。In an example of the present invention, as shown in FIGS. 5 and 6 , thecomb 404 may further include asecond flattening portion 4046 , thesecond flattening portion 4046 may be provided on thebody 4041 , and thesecond flattening portion 4046 may be opposite to the The first flattenedportion 4045 is away from the initial position. Specifically, the second flattenedportion 4046 may be located on the right side of the first flattenedportion 4045 . Wherein, a plurality ofsecond comb teeth 40461 may be arranged at intervals on thesecond flattening portion 4046 , and the lower edge of eachsecond comb tooth 40461 may be separated from theupper surface 201 of the workingplatform 20 by a predetermined distance.

通过在本体4041上设置第二铺平部4046且第二铺平部4046的第二梳齿40461的下沿与工作平台20的上表面201间隔预定距离，从而可以利用第二铺平部4046先对粉末2进行初步铺平，即可以将粉末2的推力分散到第一铺平部4045和第二铺平部4046上，由此可以减小梳子404变形的风险。具体而沿，每个第二梳齿40461的下沿与工作平台20的上表面201之间的距离为Δh（如图5所示）。By setting thesecond flattening portion 4046 on thebody 4041 and the lower edge of thesecond comb teeth 40461 of thesecond flattening portion 4046 is spaced a predetermined distance from theupper surface 201 of the workingplatform 20, so that thesecond flattening portion 4046 can be used to first Preliminary flattening of thepowder 2 means that the pushing force of thepowder 2 can be distributed to thefirst flattening part 4045 and thesecond flattening part 4046 , thereby reducing the risk of deformation of thecomb 404 . Specifically, the distance between the lower edge of eachsecond comb tooth 40461 and theupper surface 201 of the workingplatform 20 is Δh (as shown in FIG. 5 ).

有利地，第二铺平部4046可以是平板状，且第二铺平部4046可以平行于第一铺平部4045和本体4041。由此可以使梳子404的结构更加合理。本体4041、第一铺平部4045和第二铺平部4046都可以相对工作平台20的上表面201倾斜地设置。每个第二梳齿40461的下沿与工作平台20的上表面201之间的距离可以大于0且小于等于1毫米。优选地，每个第二梳齿40461的下沿与工作平台20的上表面201之间的距离可以是0.2毫米。Advantageously, the second flattenedportion 4046 may be flat, and the second flattenedportion 4046 may be parallel to the first flattenedportion 4045 and thebody 4041 . Thus, the structure of thecomb 404 can be made more reasonable. Themain body 4041 , the first flattenedportion 4045 and the second flattenedportion 4046 can all be inclined relative to theupper surface 201 of the workingplatform 20 . The distance between the lower edge of eachsecond comb tooth 40461 and theupper surface 201 of the workingplatform 20 may be greater than 0 and less than or equal to 1 mm. Preferably, the distance between the lower edge of eachsecond comb tooth 40461 and theupper surface 201 of the workingplatform 20 may be 0.2 mm.

如图6所示，第一铺平部4045和第二铺平部4046可以采用弹性较好的材料制成，并利用线切割加工出等间距的槽，以便形成一列第一梳齿40451和一列第二梳齿40461。每个第一梳齿40451的宽度可以是1毫米，每个第二梳齿40461的宽度可以是1毫米。As shown in Figure 6, the first flattenedpart 4045 and the second flattenedpart 4046 can be made of a material with better elasticity, and the slots at equal intervals are processed by wire cutting, so as to form a row offirst comb teeth 40451 and a row of comb teeth. Thesecond comb tooth 40461. The width of eachfirst comb tooth 40451 may be 1 mm, and the width of eachsecond comb tooth 40461 may be 1 mm.

第一铺平部4045和第二铺平部4046的厚度可以根据材料而定，一般在0.1毫米-1毫米。有利地，第一铺平部4045和第二铺平部4046都可以由弹簧钢支撑，第一铺平部4045的厚度和第二铺平部4046的厚度都可以是0.4毫米。The thickness of the first flattenedpart 4045 and the second flattenedpart 4046 can be determined according to the material, generally in the range of 0.1mm-1mm. Advantageously, both the first flattenedportion 4045 and the second flattenedportion 4046 may be supported by spring steel, and the thickness of the first flattenedportion 4045 and the second flattenedportion 4046 may both be 0.4 mm.

如图5和图6所示，有利地，第二铺平部4046可以平行于第一铺平部4045。由此可以使梳子404的结构更加合理。As shown in FIGS. 5 and 6 , advantageously, the second flattenedportion 4046 may be parallel to the first flattenedportion 4045 . Thus, the structure of thecomb 404 can be made more reasonable.

在本发明的一个具体示例中，如图6所示，相邻两个第二梳齿40461之间的间隙40462在梳子404的移动方向（例如左右方向）上可以与第一梳齿40451相对。换言之，第一铺平部4045与第二铺平部4046可以错开设置。当第二铺平部4046刮过粉末2时，会有粉末2从相邻两个第二梳齿40461之间的间隙中漏出。由于该间隙与第一梳齿40451相对，因此第一梳齿40451可以将漏出的粉末2刮平，由此可以进一步提高粉末铺平装置40的铺平效果。In a specific example of the present invention, as shown in FIG. 6 , thegap 40462 between two adjacentsecond comb teeth 40461 may be opposite to thefirst comb teeth 40451 in the moving direction of the comb 404 (eg left and right directions). In other words, the first flattenedportion 4045 and the second flattenedportion 4046 can be arranged in a staggered manner. When thesecond flattening portion 4046 scrapes thepowder 2 , thepowder 2 will leak out from the gap between two adjacentsecond comb teeth 40461 . Since the gap is opposite to thefirst comb teeth 40451, thefirst comb teeth 40451 can scrape off the leakedpowder 2, thereby further improving the leveling effect of thepowder leveling device 40.

如图1-图4所示，第一导轨401和第二导轨402中的每一个可以包括导轨部4011和支撑部4012。支撑部4012可以设在工作平台20的上表面201上，导轨部4011可以设在支撑部4012上，且导轨部4011可以位于工作平台20的上方。也就是说，导轨部4011的下表面与工作平台20在上下方向上间隔开。As shown in FIGS. 1-4 , each of thefirst guide rail 401 and thesecond guide rail 402 may include aguide rail portion 4011 and asupport portion 4012 . Thesupport part 4012 may be provided on theupper surface 201 of the workingplatform 20 , theguide rail part 4011 may be provided on thesupport part 4012 , and theguide rail part 4011 may be located above the workingplatform 20 . That is, the lower surface of therail portion 4011 is spaced apart from thework platform 20 in the up-down direction.

本发明还提供了一种三维打印系统。根据本发明实施例的三维打印系统包括工作平台20和粉末铺平装置。所述粉末铺平装置为根据上述实施例的粉末铺平装置40。其中，第一导轨401和第二导轨402间隔开地设在工作平台20的上表面201上，第一导轨401的下表面的第一部分和第二导轨402的下表面的第一部分均与工作平台20在上下方向上间隔开，梳子404的下沿与工作平台20的上表面201接触。The invention also provides a three-dimensional printing system. The three-dimensional printing system according to the embodiment of the present invention includes a workingplatform 20 and a powder spreading device. The powder leveling device is thepowder leveling device 40 according to the above embodiments. Wherein, thefirst guide rail 401 and thesecond guide rail 402 are arranged on theupper surface 201 of thework platform 20 at intervals, and the first part of the lower surface of thefirst guide rail 401 and the first part of the lower surface of thesecond guide rail 402 are all in contact with the work platform. 20 are spaced apart in the vertical direction, and the lower edge of thecomb 404 is in contact with theupper surface 201 of the workingplatform 20 .

根据本发明实施例的三维打印系统通过设置根据上述实施例的用于三维打印系统的粉末铺平装置40，从而具有铺平效果好、铺平效率高、不易损坏、使用寿命长等优点。The 3D printing system according to the embodiment of the present invention has the advantages of good leveling effect, high leveling efficiency, less damage and long service life by setting thepowder leveling device 40 for the 3D printing system according to the above-mentioned embodiments.

在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示意性实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。In the description of this specification, references to the terms "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific examples," or "some examples" are intended to mean that the implementation A specific feature, structure, material, or characteristic described by an embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

尽管已经示出和描述了本发明的实施例，本领域的普通技术人员可以理解：在不脱离本发明的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由权利要求及其等同物限定。Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and modifications can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the invention is defined by the claims and their equivalents.

Claims (11)

1. for a powder paving device for 3 D-printing system, it is characterized in that, described 3 D-printing system comprises workbench, and described powder paving device comprises:

The first guide rail and the second guide rail, described the first guide rail and described the second guide rail are located on the upper surface of described workbench at interval, and the first of the lower surface of the first of the lower surface of wherein said the first guide rail and described the second guide rail is all spaced apart on above-below direction with described workbench;

Sliding part;

Comb, described comb is located on described sliding part obliquely, and the lower edge of described comb contacts with the upper surface of described workbench;

The first roller and the second roller, described the first roller is located at the first side of described comb, and described the second roller is located at the second side of described comb; And

Actuator, described actuator is connected with described sliding part to drive described comb to move between initial position and final position by described sliding part, wherein said comb is when moving from described initial position to described final position, described the first roller contacts with the first of the lower surface of described the first guide rail, and described the second roller contacts with the first of the lower surface of described the second guide rail.

2. the powder paving device for 3 D-printing system according to claim 1, it is characterized in that, described comb is located on described sliding part pivotly, described powder paving device also comprises regulating part, and described regulating part is located at movably and on described sliding part and with described comb, contacts to regulate the size of angle of the upper surface of described comb and described workbench.

3. the powder paving device for 3 D-printing system according to claim 2, is characterized in that, described comb comprises:

Body, described body is located on described sliding part obliquely, and described body contacts with described regulating part;

The first pivotal axis, described the first pivotal axis is located on described body and is rotatably installed on described sliding part;

The second pivotal axis and the 3rd pivotal axis, described the second pivotal axis is located at the first side of described body, described the 3rd pivotal axis is located at the second side of described body, described the first side is relative with described the second side, described the first roller is arranged on described the second pivotal axis, and described the second roller is arranged on described the 3rd pivotal axis; With

First paves portion, and described first portion of paving is located on described body, and described first paves in portion and be provided with at interval a plurality of the first broach, and described in each, the lower edge of the first broach contacts with the upper surface of described workbench.

4. the powder paving device for 3 D-printing system according to claim 3, it is characterized in that, described comb also comprises that second paves portion, described second portion of paving is located on described body, portion is paved away from described initial position by described second portion of paving relatively described first, wherein said second paves and in portion, is provided with at interval a plurality of the second broach, the upper surface interval preset distance of the lower edge of the second broach and described workbench described in each.

5. the powder paving device for 3 D-printing system according to claim 4, is characterized in that, described second portion of paving is parallel to described first and paves portion.

6. the powder paving device for 3 D-printing system according to claim 4, is characterized in that, the gap between adjacent two described the second broach is relative with described the first broach on the moving direction of described comb.

7. the powder paving device for 3 D-printing system according to claim 2, is characterized in that, also comprises:

The first wedge and the second wedge, described the first wedge has the first inclined-plane, and described the second wedge has the second inclined-plane; And

The first turnover panel and the second turnover panel, described the first turnover panel is located at pivotly the end away from described initial position of described the first guide rail and the end face away from described the first guide rail of described the first turnover panel is the 3rd inclined-plane, described the second turnover panel is located at pivotly the end away from described initial position of described the second guide rail and the end face away from described the second guide rail of described the second turnover panel is the 4th inclined-plane, described the 3rd inclined-plane is supported on described the first inclined-plane, and described the 4th inclined-plane is supported on described the second inclined-plane.

8. the powder paving device for 3 D-printing system according to claim 7, it is characterized in that, the contiguous upper surface of described the first guide rail of upper surface and the upper surface of described the first wedge of described the first turnover panel, the lower surface of contiguous described first guide rail of lower surface of described the first turnover panel, the upper surface of the upper surface of wherein said the first turnover panel, described the first guide rail is concordant with the upper surface of described the first wedge, the lower surface of described the first turnover panel is concordant with the lower surface of described the first guide rail

The contiguous upper surface of described the second guide rail of upper surface and the upper surface of described the second wedge of described the second turnover panel, the lower surface of contiguous described second guide rail of lower surface of described the second turnover panel, the upper surface of the upper surface of described the second turnover panel, described the second guide rail is concordant with the upper surface of described the second wedge, and the lower surface of described the second turnover panel is concordant with the lower surface of described the second guide rail.

9. the powder paving device for 3 D-printing system according to claim 2, is characterized in that, the angle of the upper surface of described comb and described workbench is 45 degree-85 degree.

10. the powder paving device for 3 D-printing system according to claim 2, it is characterized in that, described sliding part is provided with screwed hole, and described regulating part threaded engagement is in described screwed hole, and the end of described regulating part is passed described screwed hole and contacted with described comb.

11. 1 kinds of 3 D-printing systems, is characterized in that, comprising:

Workbench; With

Powder paving device, described powder paving device is according to the powder paving device for 3 D-printing system described in any one in claim 1-10, wherein said the first guide rail and described the second guide rail are located on the upper surface of described workbench at interval, the first of the lower surface of the first of the lower surface of described the first guide rail and described the second guide rail is all spaced apart on above-below direction with described workbench, and the lower edge of described comb contacts with the upper surface of described workbench.

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