CN110712369A - print nozzle - Google Patents

Abstract

Translated fromChinese

本发明公开了一种打印喷头，涉及生物打印领域，用以实现螺杆泵的无工具拆卸。该打印喷头包括壳体、驱动部件以及螺杆泵组件。壳体包括安装孔，驱动部件安装于安装孔的一端。螺杆泵组件安装于安装孔的另一端；所述驱动部件的驱动轴的端部与所述螺杆泵组件的转子的端部形成能驱动转动且在所述螺杆泵组件的拆卸方向上无约束的配合。上述技术方案，减少了驱动部件和螺杆泵组件之间的约束，使得两者的配合只要能使得两者同步转动。由于驱动部件和螺杆泵组件之间没有额外的、不需要的约束，需要清洗、更换螺杆泵以及拆装螺杆泵组件时，所需要去除的约束少，拆装便捷高效。

The invention discloses a printing nozzle, which relates to the field of bioprinting and is used for realizing tool-less disassembly of a screw pump. The printing nozzle includes a casing, a driving part and a screw pump assembly. The housing includes a mounting hole, and the driving component is mounted on one end of the mounting hole. The screw pump assembly is installed at the other end of the mounting hole; the end of the drive shaft of the driving component and the end of the rotor of the screw pump assembly form a drive that can be rotated and is unconstrained in the disassembly direction of the screw pump assembly Cooperate. The above technical solution reduces the constraints between the driving component and the screw pump assembly, so that the cooperation of the two can only make the two rotate synchronously. Since there are no additional and unnecessary constraints between the driving components and the screw pump assembly, when cleaning, replacing the screw pump, and disassembling and assembling the screw pump assembly, less constraints need to be removed, and the disassembly and assembly are convenient and efficient.

Description

Translated fromChinese

打印喷头print nozzle

技术领域technical field

本发明涉及生物打印领域，具体涉及一种打印喷头。The invention relates to the field of bioprinting, in particular to a printing nozzle.

背景技术Background technique

生物3D打印是指通过3D打印的原理和方法，将生物材料(包括天然生物材料、合成生物材料或细胞溶液)打印成为设计的三维结构体。区别于普通的3D打印技术，生物3D打印技术生产的生物组织或器官具有一定的生物学功能，需为细胞和组织的进一步生长提供条件。正是由于上述特性，生物3D打印技术在发展中，面临着很多特定的技术问题。Biological 3D printing refers to the printing of biological materials (including natural biological materials, synthetic biological materials or cell solutions) into designed three-dimensional structures through the principles and methods of 3D printing. Different from ordinary 3D printing technology, biological tissues or organs produced by biological 3D printing technology have certain biological functions, which need to provide conditions for the further growth of cells and tissues. It is precisely because of the above characteristics that bio-3D printing technology is facing many specific technical problems in the development.

其中，在生物3D打印领域，将细胞作为打印材料的技术称为细胞三维打印技术，人们可以利用细胞和生物相容性材料制成生物墨汁，喷头移动并将生物墨汁喷出，通过程序控制喷头运动打印生物墨水，将生物墨汁按照预设的目标打印物体的三维构建数字模型打印成型。Among them, in the field of biological 3D printing, the technology that uses cells as printing materials is called cell 3D printing technology. People can use cells and biocompatible materials to make bio-ink, the nozzle moves and ejects the bio-ink, and the nozzle is controlled by a program. Motion printing bio-ink, and the bio-ink prints the digital model of the three-dimensional construction of the object to be printed according to the preset target.

下面介绍目前已有的3D打印喷头结构。生物砖打印喷头包括螺杆泵、电机和壳体，螺杆泵位于壳体内部，且螺杆泵与电机之间通过螺栓等部件连接。The following introduces the structure of the existing 3D printing nozzle. The bio-brick printing nozzle includes a screw pump, a motor and a casing. The screw pump is located inside the casing, and the screw pump and the motor are connected by bolts and other components.

发明人发现，当需要清洗或更换螺杆泵时，先要使用工具将壳体拆卸下来，并将螺杆泵和电机取出；然后要使用工具将电机和螺杆泵拆开，拆卸步骤多且必须借助工具，拆卸过程复杂，耗时长。The inventor found that when the screw pump needs to be cleaned or replaced, a tool should be used to disassemble the casing first, and the screw pump and the motor should be taken out; and then tools should be used to disassemble the motor and the screw pump. There are many disassembly steps and tools must be used. , the disassembly process is complicated and time-consuming.

发明内容SUMMARY OF THE INVENTION

本发明提出一种打印喷头，简化其拆装过程。The present invention provides a printing nozzle, which simplifies its disassembly and assembly process.

本发明提供了一种打印喷头，包括：The present invention provides a printing nozzle, comprising:

壳体，包括安装孔；housing, including mounting holes;

驱动部件，安装于所述安装孔的一端；以及a driving part mounted on one end of the mounting hole; and

螺杆泵组件，安装于所述安装孔的另一端；所述驱动部件的驱动轴的端部与所述螺杆泵组件的转子的端部形成能驱动转动且在所述螺杆泵组件的拆卸方向上无约束的配合。The screw pump assembly is installed at the other end of the mounting hole; the end of the drive shaft of the driving component and the end of the rotor of the screw pump assembly are formed to be capable of driving rotation and in the disassembly direction of the screw pump assembly Unconstrained mates.

在一些实施例中，打印喷头还包括：In some embodiments, the print head further includes:

生物砖存储容器，所述螺杆泵组件通过所述生物砖存储容器安装于所述安装孔的另一端。A bio-brick storage container, the screw pump assembly is installed at the other end of the installation hole through the bio-brick storage container.

在一些实施例中，打印喷头还包括：In some embodiments, the print head further includes:

连接件，安装于所述螺杆泵组件；所述生物砖存储容器插入所述壳体且直接与所述连接件可拆卸连接。A connecting piece is installed on the screw pump assembly; the bio-brick storage container is inserted into the housing and is directly and detachably connected with the connecting piece.

在一些实施例中，所述生物砖存储容器的出口外部套设有环套，所述环套设有内螺纹；所述连接件设有与所述内螺纹配合的外螺纹。In some embodiments, the outlet of the bio-brick storage container is provided with a ring sleeve, and the ring sleeve is provided with an inner thread; the connector is provided with an outer thread matched with the inner thread.

在一些实施例中，所述螺杆泵组件设有第一凸起，所述第一凸起设有锁止槽；所述壳体设有第一凹槽，所述第一凹槽内安装有卡扣，所述卡扣用于在脱离所述锁止槽和卡入所述锁止槽的位置之间切换。In some embodiments, the screw pump assembly is provided with a first protrusion, and the first protrusion is provided with a locking groove; the housing is provided with a first groove, and a first groove is installed in the first groove The buckle is used for switching between the position of being disengaged from the locking groove and being locked into the locking groove.

在一些实施例中，打印喷头还包括：In some embodiments, the print head further includes:

连接组件，包括相互啮合的第一齿组件和第二齿组件，所述第一齿组件安装于所述驱动部件，所述第二齿组件安装于所述转子。The connecting assembly includes a first tooth assembly and a second tooth assembly that mesh with each other, the first tooth assembly is mounted on the driving part, and the second tooth assembly is mounted on the rotor.

在一些实施例中，所述第二齿组件与所述转子通过销轴可拆卸连接。In some embodiments, the second tooth assembly is detachably connected to the rotor through a pin.

在一些实施例中，所述第一齿组件的边缘设有第一斜齿，所述第一齿组件的中部设有第二凸起；所述第二齿组件的边缘设有第二斜齿，所述第二齿组件的中部设有第二凹槽。In some embodiments, the edge of the first tooth assembly is provided with first helical teeth, the middle of the first tooth assembly is provided with a second protrusion; the edge of the second tooth assembly is provided with second helical teeth , the middle of the second tooth assembly is provided with a second groove.

在一些实施例中，所述驱动部件和所述螺杆泵组件之间夹设有用于辅助拆卸的弹簧。In some embodiments, a spring for assisting disassembly is sandwiched between the driving member and the progressive cavity pump assembly.

在一些实施例中，所述螺杆泵组件包括：In some embodiments, the progressive cavity pump assembly includes:

所述螺杆泵组件包括：The screw pump assembly includes:

螺杆泵，包括定子、所述转子和安装座；所述定子与所述安装座可拆卸连接，所述转子与所述安装座可转动连接；所述转子和所述基座之间形成流量空间；A screw pump, comprising a stator, the rotor and a mounting seat; the stator and the mounting seat are detachably connected, and the rotor and the mounting seat are rotatably connected; a flow space is formed between the rotor and the base ;

基座，部分或全部位于所述壳体内，所述螺杆泵安装于所述基座；以及a base, partially or wholly within the housing, to which the progressive cavity pump is mounted; and

喷头，安装于所述定子远离所述驱动部件的一端。The spray head is installed on the end of the stator away from the driving part.

在一些实施例中，所述安装座插入所述基座的通孔中。In some embodiments, the mount is inserted into a through hole of the base.

在一些实施例中，所述安装座包括用于穿设所述转子的光滑段的光孔，所述光孔与所述转子的光滑段的外壁之间的空隙作为流量空间，所述光孔的半径为3mm-4mm。In some embodiments, the mounting seat includes a light hole for passing through the smooth section of the rotor, and the gap between the light hole and the outer wall of the smooth section of the rotor serves as a flow space, and the light hole The radius is 3mm-4mm.

在一些实施例中，打印喷头还包括：In some embodiments, the print head further includes:

温度控制装置，安装于所述壳体，用于控制所述壳体内部的温度。A temperature control device is installed on the casing and used to control the temperature inside the casing.

在一些实施例中，所述温度控制装置包括：In some embodiments, the temperature control device includes:

半导体制冷装置，设于所述壳体的内壁，用于对所述螺杆泵组件降温；以及a semiconductor refrigeration device, arranged on the inner wall of the casing, for cooling the screw pump assembly; and

散热装置，设于所述半导体制冷装置附近或覆盖所述半导体制冷装置，用于对所述半导体制冷装置降温。The heat dissipation device is arranged near the semiconductor refrigeration device or covers the semiconductor refrigeration device, and is used for cooling the semiconductor refrigeration device.

在一些实施例中，所述散热装置包括：In some embodiments, the heat sink includes:

水冷机，用于提供冷冻水。A water chiller is used to provide chilled water.

在一些实施例中，所述螺杆泵组件直接可拆卸地安装于所述安装孔的另一端。In some embodiments, the screw pump assembly is directly and detachably mounted on the other end of the mounting hole.

基于上述技术方案，本发明实施例至少可以产生如下技术效果：Based on the above technical solutions, the embodiments of the present invention can at least produce the following technical effects:

上述技术方案，减少了驱动部件和螺杆泵组件之间的约束，且两者的配合能使得两者同步转动。由于驱动部件和螺杆泵组件之间没有额外的、不需要的约束，需要清洗、更换螺杆泵以及拆装螺杆泵组件时，所需去除的约束少，拆装便捷高效。The above technical solution reduces the constraints between the driving component and the screw pump assembly, and the cooperation of the two can make the two rotate synchronously. Since there are no additional and unnecessary constraints between the driving components and the screw pump assembly, when cleaning, replacing the screw pump, and disassembling and assembling the screw pump assembly are required, less constraints need to be removed, and the disassembly and assembly are convenient and efficient.

附图说明Description of drawings

此处所说明的附图用来提供对本发明的进一步理解，构成本申请的一部分，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

图1为本发明实施例提供的打印喷头立体结构示意图；1 is a schematic diagram of a three-dimensional structure of a printing nozzle provided by an embodiment of the present invention;

图2为本发明实施例提供的打印喷头分解示意图；2 is an exploded schematic diagram of a print nozzle provided by an embodiment of the present invention;

图3为图2的剖视示意图；Fig. 3 is the sectional schematic diagram of Fig. 2;

图4为本发明实施例提供的打印喷头的部分结构示意图；4 is a schematic diagram of a partial structure of a print nozzle provided by an embodiment of the present invention;

图5为本发明实施例提供的打印喷头连接组件的结构示意图；5 is a schematic structural diagram of a print nozzle connection assembly provided by an embodiment of the present invention;

图6为图5的A-A剖视示意图；Fig. 6 is the A-A sectional schematic diagram of Fig. 5;

图7为本发明实施例提供的打印喷头的部分结构示意图。FIG. 7 is a partial structural schematic diagram of a print nozzle provided by an embodiment of the present invention.

具体实施方式Detailed ways

下面结合图1～图7对本发明提供的技术方案进行更为详细的阐述。The technical solutions provided by the present invention will be described in more detail below with reference to FIGS. 1 to 7 .

参见图1至图3，本发明实施例提供一种打印喷头，包括壳体1、驱动部件2以及螺杆泵组件3。壳体1包括安装孔11，驱动部件2安装于安装孔11的一端，螺杆泵组件3安装于安装孔11的另一端。驱动部件2的驱动轴的端部与螺杆泵组件3的转子35的端部形成能驱动转动、但并不在拆卸方向上形成约束的配合，以使得驱动部件2能驱动转子35转动且不影响螺杆泵组件3的拆卸。Referring to FIGS. 1 to 3 , an embodiment of the present invention provides a printing nozzle, including acasing 1 , adriving component 2 and ascrew pump assembly 3 . Thehousing 1 includes a mountinghole 11 , thedriving component 2 is mounted on one end of the mountinghole 11 , and thescrew pump assembly 3 is mounted on the other end of the mountinghole 11 . The end of the drive shaft of thedrive part 2 and the end of therotor 35 of thescrew pump assembly 3 form a fit that can drive rotation, but does not form a constraint in the disassembly direction, so that thedrive part 2 can drive therotor 35 to rotate without affecting the screw Disassembly ofpump assembly 3.

在一些实施例中，拆卸方向是指平行于螺杆泵组件3的转子35的轴向、且远离所述驱动部件2的方向。以图2或图3所示方向为例，是指向下的方向。In some embodiments, the disassembly direction refers to a direction parallel to the axial direction of therotor 35 of thescrew pump assembly 3 and away from thedriving component 2 . Taking the direction shown in FIG. 2 or FIG. 3 as an example, it is a downward direction.

比如，驱动部件2的驱动轴的端部设有方孔或其他非圆形孔，转子35的端部的形状与驱动部件2的驱动轴的端部配合，以使得驱动部件2能带动转子35转动，但该配合并不在转子35的拆卸方向形成约束。在一些实施例中，若采用向下拔的方式拆卸螺杆泵组件3，则驱动部件2的驱动轴的端部与螺杆泵组件3的转子35的端部形成能转动的约束配合，该约束既能使得转子35随着驱动部件2转动，又使得转子35在拆卸方向是自由的，便于拆卸。For example, the end of the drive shaft of thedrive part 2 is provided with a square hole or other non-circular hole, and the shape of the end of therotor 35 is matched with the end of the drive shaft of thedrive part 2, so that thedrive part 2 can drive therotor 35 rotation, but the fit does not constrain the disassembly direction of therotor 35 . In some embodiments, if thescrew pump assembly 3 is disassembled by pulling down, the end of the drive shaft of thedriving component 2 and the end of therotor 35 of thescrew pump assembly 3 form a rotatable constraint fit, and the constraint is both Therotor 35 can be made to rotate with the drivingpart 2, and therotor 35 can be free in the disassembly direction, which is convenient for disassembly.

驱动部件2比如采用电机等。螺杆泵组件3是一个整体，整体安装或拆卸。该结构简化了安装、拆卸的操作。The drivingpart 2 uses, for example, a motor or the like. Thescrew pump assembly 3 is a whole, which can be installed or disassembled as a whole. The structure simplifies the installation and removal operations.

参见图2和图3，驱动部件2和螺杆泵组件3均安装于壳体1，均由壳体1支撑。驱动部件2和螺杆泵组件3之间并不相互支撑。该结构使得拆卸螺杆泵组件3时，不影响驱动部件2，大大简化了清洗、更换螺杆泵组件3时的操作，且拆装效率高。Referring to FIG. 2 and FIG. 3 , the drivingpart 2 and thescrew pump assembly 3 are both mounted on thecasing 1 and supported by thecasing 1 . The drivingpart 2 and thescrew pump assembly 3 are not mutually supported. This structure makes it possible to disassemble thescrew pump assembly 3 without affecting the drivingpart 2, which greatly simplifies the operation of cleaning and replacement of thescrew pump assembly 3, and has high disassembly and assembly efficiency.

参见图3至图6。打印喷头还包括连接组件6，连接组件6包括相互啮合的第一齿组件61和第二齿组件62，第一齿组件61安装于驱动部件2，第二齿组件62安装于转子35。驱动部件2转动带动第一齿组件61转动。第一齿组件61通过与第二齿组件62啮合，以带动第二齿组件62转动。由于第二齿组件62安装在转子35的一端，故第二齿组件62带动转子35转动。上述结构，使得转子35与驱动部件2之间通过第二齿组件62和第一齿组件61的啮合配合，实现转矩的传递。See Figures 3 to 6. The printing nozzle further includes a connectingassembly 6 . The connectingassembly 6 includes afirst tooth assembly 61 and asecond tooth assembly 62 that mesh with each other. Thefirst tooth assembly 61 is installed on the drivingpart 2 , and thesecond tooth assembly 62 is installed on therotor 35 . The rotation of the drivingmember 2 drives thefirst tooth assembly 61 to rotate. Thefirst tooth assembly 61 is engaged with thesecond tooth assembly 62 to drive thesecond tooth assembly 62 to rotate. Since thesecond tooth assembly 62 is installed at one end of therotor 35 , thesecond tooth assembly 62 drives therotor 35 to rotate. The above structure enables the transmission of torque between therotor 35 and the drivingmember 2 through the meshing and cooperation of thesecond tooth assembly 62 and thefirst tooth assembly 61 .

如图5和图6所示，第一齿组件61和第二齿组件62的具体结构如下，第一齿组件61的边缘设有第一斜齿611，第一齿组件61的中部设有第二凸起612；第二齿组件62的边缘设有第二斜齿621，第二齿组件62的中部设有第二凹槽622。转子35和驱动部件2的输出轴通过第一斜齿611和第二斜齿621的齿合，实现同步转动。转子35和驱动部件2的定位由第二凹槽622和第二凸起612的配合实现。As shown in FIG. 5 and FIG. 6 , the specific structures of thefirst tooth assembly 61 and thesecond tooth assembly 62 are as follows. Twoprotrusions 612 ; the edge of thesecond tooth assembly 62 is provided with a secondhelical tooth 621 , and the middle of thesecond tooth assembly 62 is provided with asecond groove 622 . Therotor 35 and the output shaft of thedriving component 2 rotate synchronously through the engagement of the firsthelical teeth 611 and the secondhelical teeth 621 . The positioning of therotor 35 and the drivingmember 2 is achieved by the cooperation of thesecond groove 622 and thesecond protrusion 612 .

可以理解的是，第一齿组件61所包括的齿可以为上述的斜齿，亦可为直齿。第二齿组件62所包括的齿可以为上述的斜齿，亦可为直齿。第一齿组件61的齿和第二齿组件62的齿匹配。It can be understood that, the teeth included in thefirst tooth component 61 may be the above-mentioned helical teeth or straight teeth. The teeth included in thesecond tooth assembly 62 may be the above-mentioned helical teeth or straight teeth. The teeth of thefirst tooth assembly 61 match the teeth of thesecond tooth assembly 62 .

采用上述结构，实现了驱动部件2和螺杆泵组件3在安装过程中的自动对中，降低了安装难度，提高了安装效率，同时实现了驱动部件2和螺杆泵组件3在拆卸过程中的无工具拆卸，提高了拆卸效率。By adopting the above structure, the automatic centering of the drivingpart 2 and thescrew pump assembly 3 during the installation process is realized, the installation difficulty is reduced, the installation efficiency is improved, and at the same time, the drivingpart 2 and thescrew pump assembly 3 are realized without any trouble during the disassembly process. Tool disassembly improves disassembly efficiency.

可以理解的是，在一些实施例中，啮合齿可以直接设于驱动部件2的驱动轴、转子35(例如，第一斜齿611可以直接设于驱动部件2的驱动轴，第二斜齿621可以直接设于转子35)，同时第二凸起612可以直接设于驱动部件2的驱动轴，第二凹槽622可以直接设于转子35。该实现方式可省却连接组件6，也实现了驱动部件2和螺杆泵组件3的自动对中，减少了部件数量，降低了安装难度，提高了安装效率。It can be understood that, in some embodiments, the meshing teeth may be directly provided on the drive shaft of the drivingmember 2, the rotor 35 (for example, the firsthelical teeth 611 may be directly provided on the driving shaft of the drivingmember 2, the secondhelical teeth 621 It can be directly arranged on the rotor 35 ), meanwhile, thesecond protrusion 612 can be directly arranged on the drive shaft of thedriving component 2 , and thesecond groove 622 can be directly arranged on therotor 35 . In this implementation manner, the connectingcomponent 6 can be omitted, and the automatic centering of thedriving component 2 and thescrew pump component 3 can be realized, the number of components is reduced, the installation difficulty is reduced, and the installation efficiency is improved.

参见图3，为了便于拆卸螺杆泵组件3，驱动部件2和螺杆泵组件3之间夹设有用于辅助拆卸的弹簧8。Referring to FIG. 3 , in order to facilitate the disassembly of thescrew pump assembly 3 , aspring 8 for assisting disassembly is sandwiched between the drivingpart 2 and thescrew pump assembly 3 .

参见图3，弹簧8位于第一齿组件61和第二齿组件62的外侧，且位于驱动部件2的端面和转子35的轴套37外侧安装的端盖的端面之间。弹簧8压缩状态时，弹簧8的上端与驱动部件2的输出轴的端面接触，弹簧8的下端与端盖的端面接触。Referring to FIG. 3 , thespring 8 is located outside thefirst tooth assembly 61 and thesecond tooth assembly 62 , and between the end face of the drivingmember 2 and the end face of the end cover installed outside thesleeve 37 of therotor 35 . When thespring 8 is in a compressed state, the upper end of thespring 8 is in contact with the end surface of the output shaft of the drivingmember 2, and the lower end of thespring 8 is in contact with the end surface of the end cover.

将螺杆泵组件3安装到位后，弹簧8处于压缩状态，需拆卸螺杆泵组件3时，只要断开后文所述的卡扣13和锁止槽32之间的连接，处于压缩状态的弹簧8提供的弹性力，使得螺杆泵组件3易于弹出，从而便于螺杆泵组件3的拆卸。After thescrew pump assembly 3 is installed in place, thespring 8 is in a compressed state. When thescrew pump assembly 3 needs to be disassembled, it is only necessary to disconnect the connection between thebuckle 13 and the lockinggroove 32 described later, and thespring 8 is in a compressed state. The provided elastic force makes thescrew pump assembly 3 easy to pop out, thereby facilitating the disassembly of thescrew pump assembly 3 .

下面介绍螺杆泵组件3与壳体1之间的连接方式。The connection between thescrew pump assembly 3 and thecasing 1 is described below.

在一些实施例中，螺杆泵组件3直接可拆卸地安装于安装孔11的另一端，比如通过螺纹连接与安装孔11连接，以实现无工具拆装。In some embodiments, thescrew pump assembly 3 is directly and detachably mounted on the other end of the mountinghole 11 , for example, connected to the mountinghole 11 through a threaded connection, so as to realize tool-less mounting and dismounting.

参见图3，在另一些实施例中，采用下述方式将螺杆泵组件3安装于壳体1：打印喷头还包括生物砖存储容器4，螺杆泵组件3通过生物砖存储容器4安装于安装孔11的另一端。Referring to FIG. 3 , in other embodiments, thescrew pump assembly 3 is installed in thehousing 1 in the following manner: the printing nozzle further includes a bio-brick storage container 4 , and thescrew pump assembly 3 is installed in the installation hole through the bio-brick storage container 4 the other end of 11.

生物砖存储容器4及用于存储生物砖墨汁，也作为螺杆泵组件3和壳体1之间连接的辅助连接部件。如此设置，拆卸掉生物砖存储容器4后，螺杆泵组件3能很便捷地拔下，简化了拆装过程。The bio-brick storage container 4 and the bio-brick ink storage container 4 also serve as an auxiliary connecting part for the connection between thescrew pump assembly 3 and thehousing 1 . With this arrangement, after removing the bio-brick storage container 4, thescrew pump assembly 3 can be easily pulled out, which simplifies the disassembly and assembly process.

参见图3，在一些实施例中，打印喷头还包括连接件5，连接件5安装于螺杆泵组件3。生物砖存储容器4插入壳体1且直接与连接件5可拆卸连接。Referring to FIG. 3 , in some embodiments, the printing nozzle further includes a connectingpiece 5 , and the connectingpiece 5 is mounted on thescrew pump assembly 3 . The bio-brick storage container 4 is inserted into thehousing 1 and directly and detachably connected with the connectingpiece 5 .

生物砖存储容器4和连接件5之间没有设置管子等，生物砖存储容器4直接与连接件5可拆卸连接，具体比如螺纹连接、插接等。该连接方式可省去生物砖存储容器4和连接件5之间的管子，以避免了在管子内残留生物砖墨汁，减少了不必要的浪费。There is no pipe or the like between the bio-brick storage container 4 and theconnector 5, and the bio-brick storage container 4 is directly detachably connected to theconnector 5, such as screw connection, plug connection, and the like. This connection method can save the pipe between the bio-brick storage container 4 and the connectingpiece 5, so as to avoid residual bio-brick ink in the pipe and reduce unnecessary waste.

参见图3，在一些实施例中，生物砖存储容器4的出口外部套设有环套41，环套41设有内螺纹42；连接件5设有与内螺纹42配合的外螺纹51。生物砖存储容器4与连接件5通过内螺纹42和外螺纹51实现螺纹连接。Referring to FIG. 3 , in some embodiments, the outlet of the bio-brick storage container 4 is provided with aring sleeve 41 , and thering sleeve 41 is provided with aninner thread 42 ; The bio-brick storage container 4 is connected with the connectingmember 5 through theinner thread 42 and theouter thread 51 to achieve screw connection.

参见图3，为了使得螺杆泵组件3与壳体1的连接更加稳固，在一些实施例中，螺杆泵组件3设有第一凸起31，第一凸起31设有锁止槽32。壳体1设有第一凹槽12，第一凹槽12内安装有卡扣13。卡扣13在脱离锁止槽32和卡入锁止槽32这两个位置之间切换。当卡扣13卡入锁止槽32，卡扣13将螺杆泵组件3和壳体1锁止，当卡扣13脱离锁止槽32，卡扣13将螺杆泵组件3和壳体1解锁。Referring to FIG. 3 , in order to make the connection between thescrew pump assembly 3 and thehousing 1 more stable, in some embodiments, thescrew pump assembly 3 is provided with afirst protrusion 31 , and thefirst protrusion 31 is provided with a lockinggroove 32 . Thecasing 1 is provided with afirst groove 12 , and abuckle 13 is installed in thefirst groove 12 . Thebuckle 13 is switched between two positions of disengaging from the lockinggroove 32 and engaging in the lockinggroove 32 . When thebuckle 13 is locked into the lockinggroove 32 , thebuckle 13 locks thescrew pump assembly 3 and thecasing 1 , and when thebuckle 13 is released from the lockinggroove 32 , thebuckle 13 unlocks thescrew pump assembly 3 and thecasing 1 .

安装螺杆泵组件3(即将螺杆泵组件安装到壳体上)的步骤如下：The steps for installing the screw pump assembly 3 (that is, installing the screw pump assembly on the casing) are as follows:

首先，组装形成螺杆泵。将转子35通过轴套37等部件可转动地安装在安装座38中，然后将定子34插接在安装座38远离驱动部件2的端部。上述两个操作步骤可互换顺序。实际生产中，可以采用流水线生产多个螺杆泵。First, assemble to form a screw pump. Therotor 35 is rotatably installed in the mountingseat 38 through theshaft sleeve 37 and other components, and then thestator 34 is inserted into the end of the mountingseat 38 away from the drivingpart 2 . The order of the above two operation steps can be interchanged. In actual production, multiple screw pumps can be produced in an assembly line.

然后，将喷头36插入到基座33的通孔中。然后，直接将螺杆泵安装于已经装好喷头36的基座33的通孔中。螺杆泵对喷头36起到定位作用，使得喷头36安装到位。至此，螺杆泵组件3组装完成。Then, theshower head 36 is inserted into the through hole of thebase 33 . Then, the screw pump is directly installed in the through hole of the base 33 on which thespray head 36 has been installed. The screw pump plays a role in positioning thespray head 36 so that thespray head 36 is installed in place. So far, thescrew pump assembly 3 is assembled.

接下来，将卡扣13推到解锁位置，即脱离锁止槽32的位置；将螺杆泵组件3放入到壳体1的安装孔11中，使得螺杆泵组件3的转子35的端部和驱动部件2的端部接触；螺杆泵组件3安装到位后，将卡扣13移动到锁定位置(即卡入锁止槽32的位置)，以将螺杆泵组件3与壳体1锁定；然后将生物砖存储容器4安装至螺杆泵组件3上的连接件5。Next, push thebuckle 13 to the unlocking position, that is, the position where it is released from the lockinggroove 32; put thescrew pump assembly 3 into the mountinghole 11 of thehousing 1, so that the end of therotor 35 of thescrew pump assembly 3 and The end of the drivingpart 2 is in contact; after thescrew pump assembly 3 is installed in place, move thebuckle 13 to the locking position (that is, the position where it is locked into the locking groove 32 ) to lock thescrew pump assembly 3 and thehousing 1; The bio-brick storage container 4 is mounted to theconnector 5 on thescrew pump assembly 3 .

拆卸螺杆泵组件3(即将螺杆泵组件从壳体上拆卸)的步骤如下：将生物砖存储容器4从连接件5上拆掉；将卡扣13移动至脱离锁止槽32的位置；取下螺杆泵组件3。螺杆泵组件3取下后，当需要更换螺杆泵时，仅仅需要将螺杆泵从基座33中拔出即可。The steps for disassembling the screw pump assembly 3 (that is, disassembling the screw pump assembly from the housing) are as follows: remove the bio-brick storage container 4 from theconnector 5; move thebuckle 13 to the position where it is separated from the lockinggroove 32; remove theScrew pump assembly 3. After thescrew pump assembly 3 is removed, when the screw pump needs to be replaced, it is only necessary to pull out the screw pump from thebase 33 .

螺杆泵的拆卸流程如下：拆卸定子34、拆卸转子35。上述两个操作不限定步骤。上述结构的螺杆泵，其各部分为可拆卸结构，在需要清洗时，可便捷地拆开清洗，清洗完成后可便捷地安装在一起。The disassembly process of the screw pump is as follows: disassemble thestator 34 and disassemble therotor 35 . The above two operations do not limit the steps. Each part of the screw pump of the above structure is a detachable structure, which can be easily disassembled and cleaned when cleaning is required, and can be easily installed together after cleaning is completed.

通过上述步骤即可实现螺杆泵组件安装和拆卸过程中无需工具的介入，从而使螺杆泵组件拆装便捷高效，同时在需要更换螺杆泵时，也无需使用工具，即实现了将螺杆泵从基座上拆卸。Through the above steps, no tool intervention can be achieved in the process of installation and disassembly of the screw pump assembly, so that the screw pump assembly can be disassembled and assembled conveniently and efficiently. Remove the seat.

参见图1至图3，下面介绍螺杆泵组件3的可选结构。螺杆泵组件3包括螺杆泵、基座33和喷头36。螺杆泵包括定子34、转子35和安装座38。定子34与安装座38可拆卸连接，转子35与安装座38可转动连接；转子35和基座33之间形成流量空间39。Referring to FIGS. 1 to 3 , alternative structures of thescrew pump assembly 3 are described below. Thescrew pump assembly 3 includes a screw pump, abase 33 and aspray head 36 . The screw pump includes astator 34 , arotor 35 and a mountingseat 38 . Thestator 34 is detachably connected to the mountingseat 38 , and therotor 35 is rotatably connected to the mountingseat 38 ; aflow space 39 is formed between therotor 35 and thebase 33 .

参见图3，安装座38的底部设有环形卡接部，定子34插入到该环形卡接部，两者可拆卸连接，便于更换和清洗。Referring to FIG. 3 , the bottom of the mountingseat 38 is provided with an annular engaging portion, and thestator 34 is inserted into the annular engaging portion, and the two are detachably connected to facilitate replacement and cleaning.

参见图3，定子34具有贯穿其上下两端的孔，转子35的螺旋段主要位于该孔中。该孔的下部作为出料端与喷头36连通。Referring to FIG. 3 , thestator 34 has holes extending through its upper and lower ends, and the helical segments of therotor 35 are mainly located in the holes. The lower part of the hole communicates with thespray head 36 as a discharge end.

参见图3，螺杆泵组件3的进料端与生物砖存储容器4的出料端直接连接。连接件5的外壁上设置有外螺纹51，生物砖存储容器4的环套41的内壁上设置有内螺纹42，螺杆泵组件3与生物砖存储容器4通过外螺纹51与内螺纹42的螺纹配合实现可拆卸连接。Referring to FIG. 3 , the feed end of thescrew pump assembly 3 is directly connected with the discharge end of the bio-brick storage container 4 . Anouter thread 51 is provided on the outer wall of the connectingpiece 5, aninner thread 42 is provided on the inner wall of thering sleeve 41 of the bio-brick storage container 4, and thescrew pump assembly 3 and the bio-brick storage container 4 pass through the thread of theouter thread 51 and theinner thread 42. Cooperate to achieve detachable connection.

上述结构的螺杆泵组件3，其转子35、定子34和喷头36均安装于基座33，拆装螺杆泵组件3时，其作为整体拆装，拆装操作更加便捷高效。并且，实现了螺杆泵组件3的无工具拆装。In thescrew pump assembly 3 of the above structure, therotor 35 , thestator 34 and thenozzle 36 are all mounted on thebase 33 . In addition, thescrew pump assembly 3 can be disassembled and assembled without tools.

参见图3，安装座38插入到基座33的通孔中，两者之间无须设置额外的连接。通过安装座38与壳体1的配合、以及喷头36实现了螺杆泵的定位和固定。该结构在螺杆泵组件3易于拆装的前提下，实现了螺杆泵易于从基座33中拆装。Referring to FIG. 3, the mountingseat 38 is inserted into the through hole of thebase 33, and no additional connection is required between the two. The positioning and fixing of the screw pump is achieved by the cooperation of the mountingseat 38 with thehousing 1 and thespray head 36 . With this structure, on the premise that thescrew pump assembly 3 is easy to disassemble and assemble, the screw pump can be easily disassembled and assembled from thebase 33 .

下面介绍螺杆泵组件3与第二齿组件62的连接关系。The following describes the connection relationship between thescrew pump assembly 3 and thesecond tooth assembly 62 .

参见图3和图4，第二齿组件62还包括安装件623，安装件623设置第一固定孔；转子35端部设置有与第一固定孔对应的第二固定孔，通过销轴穿过第一固定孔和第二固定孔，实现第二齿组件62与转子35的连接。3 and 4 , thesecond tooth assembly 62 further includes a mountingmember 623, and the mountingmember 623 is provided with a first fixing hole; the end of therotor 35 is provided with a second fixing hole corresponding to the first fixing hole, through which the pin passes through. The first fixing hole and the second fixing hole realize the connection between thesecond tooth assembly 62 and therotor 35 .

参见图3，在一些实施例中，安装座38包括用于穿设转子35的光滑段的光孔381，光孔381与转子35的光滑段的外壁之间的空隙作为流量空间39，光孔381的半径为3mm-4mm。采用上述结构，流量空间39的容积非常小，避免了生物墨汁的残留，减少了浪费。Referring to FIG. 3 , in some embodiments, the mountingseat 38 includes alight hole 381 for passing through the smooth section of therotor 35 , and the gap between thelight hole 381 and the outer wall of the smooth section of therotor 35 serves as theflow space 39 , and the light hole The radius of the 381 is 3mm-4mm. With the above structure, the volume of theflow space 39 is very small, which avoids the residue of bio-ink and reduces waste.

如图6和图7所示，在一些实施例中，打印喷头还包括温度控制装置7，温度控制装置7安装于壳体1，用于控制壳体1内部的温度，以使得生物墨汁的温度位于设定值，保证了生物墨汁的活性。As shown in FIG. 6 and FIG. 7 , in some embodiments, the print head further includes a temperature control device 7 . The temperature control device 7 is installed in thecasing 1 and used to control the temperature inside thecasing 1 , so that the temperature of the biological ink is Located at the set value, the activity of the bio-ink is guaranteed.

温度控制装置7用于在打印过程中控制生物墨汁的温度，使其处于设定值。温度控制装置7包括散热装置72和半导体制冷装置71，半导体制冷装置71设置在壳体1上方，散热装置72设置在半导体制冷装置71的外侧，半导体制冷装置主要由若干个半导体制冷片组成，半导体制冷片既可以用作热源，又可以用作冷源。依据半导体制冷理论，在半导体制冷片的两侧施加一个直流电压就会产生一个直流电流，这会使半导体制冷片一侧发热且另一侧制冷。通常将发热的一侧称为“热面”，而制冷的一侧称为“冷面”。半导体制冷片具有控制端，向控制端发送指令后，能够对调半导体制冷片两侧的电压极性，使电流反向流动，从而实现半导体制冷片的冷面和热面的相互转换，也即能够实现半导体制冷系统制冷和制热功能的相互转换。可见，采用半导体制冷片作为的热交换装置，可以方便有效地实现对生物墨汁的加热或制冷，以满足生物墨汁的不同温度需求。The temperature control device 7 is used to control the temperature of the bio-ink during the printing process to keep it at a set value. The temperature control device 7 includes aheat sink 72 and asemiconductor refrigeration device 71. Thesemiconductor refrigeration device 71 is arranged above thehousing 1, and theheat sink 72 is arranged outside thesemiconductor refrigeration device 71. The semiconductor refrigeration device is mainly composed of several semiconductor refrigeration sheets. The cooling sheet can be used as both a heat source and a cold source. According to the semiconductor refrigeration theory, applying a DC voltage on both sides of the semiconductor refrigeration sheet will generate a DC current, which will make one side of the semiconductor refrigeration sheet heat up and the other side cool. The side that produces heat is usually referred to as the "hot side" and the side that cools is called the "cold side". The semiconductor refrigeration chip has a control terminal. After sending a command to the control terminal, the voltage polarity on both sides of the semiconductor refrigeration chip can be reversed, so that the current flows in the opposite direction, so as to realize the mutual conversion between the cold surface and the hot surface of the semiconductor refrigeration chip. Realize the mutual conversion of refrigeration and heating functions of semiconductor refrigeration system. It can be seen that the use of the semiconductor refrigeration sheet as the heat exchange device can conveniently and effectively realize the heating or cooling of the bio-ink, so as to meet the different temperature requirements of the bio-ink.

参见图6，壳体1上的空腔用于减轻螺杆泵组件3整体的重量。温度控制装置7安装在空腔中。Referring to FIG. 6 , the cavity on thehousing 1 is used to reduce the overall weight of thescrew pump assembly 3 . A temperature control device 7 is installed in the cavity.

由于半导体制冷装置工作过程中功率很大，所以需要散热装置72对半导体制冷装置进行散热。参见图7，散热装置72包括进液部721和出液部722和水冷机，水冷机通过管道分别与进液部721和出液部722连通。进液部721与出液部722之间通过也管道连通，且管道分布在半导体制冷片附近。通过水冷机提供的冷却水，实现冷却循环。Due to the large power of the semiconductor refrigeration device during operation, theheat sink 72 is required to dissipate heat from the semiconductor refrigeration device. Referring to FIG. 7 , theheat dissipation device 72 includes aliquid inlet 721 and aliquid outlet 722 and a water cooler, and the water cooler communicates with theliquid inlet 721 and theliquid outlet 722 respectively through pipes. Theliquid inlet part 721 and theliquid outlet part 722 are communicated through pipes, and the pipes are distributed near the semiconductor refrigeration chips. The cooling cycle is realized by the cooling water provided by the water cooler.

参见图6，在壳体1对应生物砖存储容器4安装的位置的外壁开设有观察窗14，观察窗14用于观测打印过程中生物砖存储容器4中生物墨汁的用量。Referring to FIG. 6 , anobservation window 14 is opened on the outer wall of thehousing 1 corresponding to the position where the bio-brick storage container 4 is installed. Theobservation window 14 is used to observe the amount of bio-ink in the bio-brick storage container 4 during the printing process.

在本发明的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“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，仅是为便于描述本发明和简化描述，而不是指示或暗指所指的装置或元件必须具有特定的方位、为特定的方位构造和操作，因而不能理解为对本发明保护内容的限制。In the description of the present invention, it should be understood that the terms "center", "portrait", "horizontal", "front", "rear", "left", "right", "vertical", "horizontal", The orientation or positional relationship indicated by "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or obscuring It means that the referred device or element must have a specific orientation, be constructed and operate for a specific orientation, and therefore cannot be understood as a limitation on the protection content of the present invention.

最后应说明的是：以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换，但这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or some technical features thereof are equivalently replaced, but these modifications or replacements do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (16)

1. A print head, comprising:

a housing (1) including a mounting hole (11);

a drive member (2) attached to one end of the attachment hole (11); and

the screw pump assembly (3) is mounted at the other end of the mounting hole (11); the end of the drive shaft of the drive part (2) and the end of the rotor (35) of the screw pump assembly (3) form a drive-rotatable, unconstrained fit in the direction of removal of the screw pump assembly (3).

2. The print head of claim 1, further comprising:

a biological brick storage container (4), and the screw pump assembly (3) is arranged at the other end of the mounting hole (11) through the biological brick storage container (4).

3. The print head of claim 2, further comprising:

a connector (5) mounted to the screw pump assembly (3); the biological brick storage container (4) is inserted into the shell (1) and is directly detachably connected with the connecting piece (5).

4. Print head according to claim 3, characterized in that the outlet of the biological brick storage container (4) is externally sheathed with a collar (41), the collar (41) being provided with an internal thread (42); the connecting piece (5) is provided with an external thread (51) matched with the internal thread (42).

5. Print head according to claim 1, wherein the screw pump assembly (3) is provided with a first projection (31), the first projection (31) being provided with a locking groove (32); the shell (1) is provided with a first groove (12), a buckle (13) is installed in the first groove (12), and the buckle (13) is used for switching between positions of disengaging from the locking groove (32) and clamping into the locking groove (32).

6. The print head of claim 1, further comprising:

a connection assembly (6) comprising first and second intermeshing tooth assemblies (61, 62), the first tooth assembly (61) being mounted to the drive component (2) and the second tooth assembly (62) being mounted to the rotor (35).

7. Print head according to claim 6, characterized in that said second tooth assembly (62) is removably connected to said rotor (35) by a pin.

8. Print head according to claim 6, characterized in that the edge of the first tooth assembly (61) is provided with a first inclined tooth (611), the middle of the first tooth assembly (61) being provided with a second protrusion (612); the edge of the second tooth component (62) is provided with a second inclined tooth (621), and the middle of the second tooth component (62) is provided with a second groove (622).

9. Print head according to claim 1, characterized in that a spring (8) is interposed between the drive part (2) and the screw pump assembly (3) for assisting the disassembly.

10. Print head according to claim 1, characterized in that the screw pump assembly (3) comprises:

the screw pump comprises a stator (34), a rotor (35) and a mounting seat (38); the stator (34) is detachably connected with the mounting seat (38), and the rotor (35) is rotatably connected with the mounting seat (38); a flow space (39) is formed between the rotor (35) and the base (33);

a base (33) located partially or wholly within the housing (1), the screw pump being mounted to the base (33); and

and the spray head (36) is arranged at one end of the stator (34) far away from the driving part (2).

11. Print head according to claim 10, characterized in that said mounting seat (38) is inserted in a through hole of said base (33).

12. Print head according to claim 11, characterized in that the mounting seat (38) comprises a light hole (381) for passing through the smooth section of the rotor (35), the gap between the light hole (381) and the outer wall of the smooth section of the rotor (35) being a flow space (39), the radius of the light hole (381) being 3mm-4 mm.

13. The print head of claim 1, further comprising:

and the temperature control device (7) is arranged on the shell (1) and is used for controlling the temperature inside the shell (1).

14. Print head according to claim 13, characterized in that said temperature control means (7) comprise:

the semiconductor refrigerating device (71) is arranged on the outer surface of the shell (1) and used for cooling the screw pump assembly (3); and

and the heat dissipation device (72) is arranged near the semiconductor refrigerating device (71) or covers the semiconductor refrigerating device (71) and is used for cooling the semiconductor refrigerating device (71).

15. Print head according to claim 14, characterized in that said heat dissipating means (72) comprise:

and the water cooler is used for providing chilled water.

16. Print head according to claim 1, characterized in that the screw pump assembly (3) is directly detachably mounted at the other end of the mounting hole (11).

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