Disclosure of Invention
The utility model aims to provide an injection mold, which aims to solve the technical problem that the existing injection mold cannot simultaneously loose core for the lower edge of an automobile charging cover and the arc-shaped edge of the central position of a main body.
In a first aspect, the present utility model provides an injection mold comprising: the device comprises a movable mold, a fixed mold, a base, a driving mechanism, a core pulling mechanism, a connecting rod mechanism and a limiting part, wherein the base, the driving mechanism, the connecting rod mechanism and the limiting part are all arranged in the fixed mold, the driving mechanism is arranged on the base, two ends of the connecting rod mechanism are hinged to the driving mechanism and the core pulling mechanism respectively, the core pulling mechanism is used for enabling a first injection molding part and a second injection molding part to be reversely buckled and molded, the movable mold and the fixed mold are oppositely combined to form a cavity, the core pulling mechanism, the first injection molding part and the second injection molding part are arranged in the cavity, the limiting part is arranged on the driving mechanism, and the driving mechanism can drive the limiting part to be abutted to the cavity wall of the fixed mold so that the connecting rod mechanism can keep the core pulling mechanism at an injection molding position.
Preferably, the driving mechanism comprises a driving piece and a sliding piece, the driving piece is connected with the sliding piece, the sliding piece is arranged on the base in a sliding mode, and the limiting piece is detachably connected with the sliding piece.
Preferably, the limiting parts are provided with a plurality of limiting parts, and the limiting parts are mounted on the end faces, far away from the driving parts, of the sliding parts through bolts.
Preferably, the cross section of the limiting piece is circular.
Preferably, the injection mold further comprises a travel switch mechanism, wherein the travel switch mechanism is used for limiting the moving travel of the sliding piece relative to the base.
Preferably, the travel switch mechanism includes a first travel switch, a second travel switch and an auxiliary member, where the first travel switch and the second travel switch are relatively disposed on the driving member, and the auxiliary member is disposed on the sliding member and is used to cooperate with the first travel switch and the second travel switch to control the driving member to drive the moving travel of the sliding member.
Preferably, the auxiliary member is provided with a first inclined plane and a second inclined plane, the first inclined plane and the second inclined plane are arranged at an included angle, the first inclined plane is used for being abutted against the first travel switch so as to trigger the first travel switch, and the second inclined plane is used for being abutted against the second travel switch so as to trigger the second travel switch.
Preferably, the link mechanism comprises a first link and a second link, the core pulling mechanism comprises a first core pulling member and a second core pulling member, the first link and the second link are respectively connected with the first core pulling member and the second core pulling member, the first core pulling member is used for enabling the first injection molding member to be in back-off molding, the second core pulling member is used for enabling the second injection molding member to be in back-off molding, and the driving mechanism respectively drives the first link and the second link to drive the first core pulling member and the second core pulling member to reversely and synchronously rotate so as to enable the first core pulling member and the second core pulling member to be respectively and synchronously separated from the first injection molding member and the second injection molding member.
Preferably, the second core pulling member includes a core pulling portion and a connecting portion, the core pulling portion and the second connecting rod are connected through the connecting portion, the connecting portion is provided with a first straight surface, the core pulling portion is provided with a second straight surface, and the first straight surface is connected with the second straight surface, so that the contact area between the second connecting rod and the core pulling portion can be increased.
Preferably, the injection mold further comprises two limiting strips, the two limiting strips are oppositely arranged on the base, the sliding piece is clamped between the two limiting strips, and the limiting strips are used for guiding the sliding piece to move along the first direction.
The embodiment of the utility model has the following beneficial effects:
according to the injection mold disclosed by the utility model, the limiting piece is arranged in the fixed mold, the driving mechanism drives the limiting piece to be abutted against the cavity wall of the fixed mold, so that the core pulling mechanism can be kept at the injection molding position by the connecting rod mechanism, a shovel base is not required to be arranged on the movable mold, and the second injection molding piece and the core pulling mechanism are both provided with the avoiding holes for inserting the shovel base, so that the core pulling mechanism is kept at the injection molding position, the damage of the shovel base to the second injection molding piece is avoided, the structural integrity of the second injection molding piece is ensured, and the core pulling mechanism can simultaneously core the first injection molding piece and the second injection molding piece.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicators are correspondingly changed.
Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
The embodiment of the utility model provides an injection mold which is mainly used for simultaneously pulling cores for the lower edge of an automobile charging port cover and the arc-shaped edge of the center position of a main body.
Referring to fig. 1 to 4, an injection mold of an embodiment includes a movable mold, a fixed mold 10, a base, a driving mechanism 100, a core pulling mechanism 200, a link mechanism 300 and a limiting member 410, wherein the base, the driving mechanism 100, the link mechanism 300 and the limiting member 410 are all disposed in the fixed mold 10, the driving mechanism 100 is disposed on the base, two ends of the link mechanism 300 are respectively hinged with the driving mechanism 100 and the core pulling mechanism 200, so that the core pulling mechanism 200 can rotate relative to the link mechanism 300, and the link mechanism 300 can rotate relative to the driving mechanism 100, and the degree of freedom of movement of the core pulling mechanism 200 is increased by hinging twice, so that the rotation of the core pulling mechanism 200 can meet the injection molding and core pulling requirements.
In this embodiment, the core pulling mechanism 200 is used for making the first injection molding member 20 and the second injection molding member 30 both reversely buckled and formed, specifically, the first injection molding member 20 is a lower edge of an automobile charging cover, the second injection molding member 30 is an arc edge of a central position of an automobile charging cover main body, the first injection molding member 20 and the second injection molding member 30 are both soft rubber products, the automobile charging cover main body is a hard rubber product, the movable mold and the fixed mold 10 are combined to form a cavity 11, the core pulling mechanism 200, the first injection molding member 20 and the second injection molding member 30 are all arranged in the cavity 11, the limiting member 410 is arranged in the driving mechanism 100, and the driving mechanism 100 can drive the limiting member 410 to abut against a cavity wall of the fixed mold 10, so that the connecting rod mechanism 300 can keep the core pulling mechanism 200 at an injection molding position, the core pulling mechanism 200 is prevented from shifting under the action of injection molding pressure, and the injection molding effect and quality are ensured.
It can be appreciated that the limiting member 410 is disposed in the fixed mold 10, the driving mechanism 100 drives the limiting member 410 to abut against the cavity wall of the fixed mold 10, so that the link mechanism 300 can maintain the core pulling mechanism 200 at the injection molding position, a shovel base is not required to be disposed on the movable mold, and avoidance holes for inserting the shovel base are disposed on the second injection molding member 30 and the core pulling mechanism 200, so that the core pulling mechanism 200 is maintained at the injection molding position, damage of the shovel base to the second injection molding member 30 is avoided, the structural integrity of the second injection molding member 30 is ensured, and further, the core pulling mechanism 200 can simultaneously core the first injection molding member 20 and the second injection molding member 30.
In an embodiment, referring to fig. 1 to 3, the driving mechanism 100 includes a driving member 110 and a sliding member 120, in this embodiment, the driving member 110 is an oil cylinder, and of course, in other embodiments, the driving member 110 is an air cylinder, the driving member 110 is connected with the sliding member 120, the sliding member 120 is slidably disposed on a base, and the limiting member 410 is detachably connected with the sliding member 120, so that the limiting member 410 is convenient to replace after being worn.
Further, referring to fig. 4, a plurality of limiting members 410 are provided, specifically, two limiting members 410 are provided, and are both mounted on the end surface of the sliding member 120 away from the driving member 110 through bolts, in the injection molding process, the driving mechanism 100 drives the two limiting members 410 to abut against the cavity wall of the fixed mold 10 at the same time, so that the sliding member 120 does not move in the injection molding process, and further the link mechanism 300 can stably maintain the core pulling mechanism 200 in the injection molding position.
Further, the cross section of the limiting member 410 is circular, and of course, the cross section of the limiting member 410 may be square or irregular.
Preferably, the limiting member 410 is a structural member made of rubber material, and the abutting force between the limiting member 410 and the cavity wall of the fixed mold 10 is buffered, so that the limiting member 410 is prevented from rigidly contacting with the cavity wall of the fixed mold 10.
In an embodiment, referring to fig. 3 and 4, the injection mold further includes a travel switch mechanism 500, where the travel switch mechanism 500 is used for limiting a movement travel of the sliding member 120 relative to the base, and the travel switch mechanism 500 is configured to control the movement travel of the sliding member 120, so as to avoid that the sliding member 120 cannot move in place before injection molding, so that the sliding member 120 cannot abut the limiting member 410 against a cavity wall of the fixed mold 10, and the sliding member 120 drives the link mechanism 300 to drive the core pulling mechanism 200 to rotate beyond a range in a core pulling process, thereby affecting a subsequent reset of the core pulling mechanism 200.
Further, the travel switch mechanism 500 includes a first travel switch 510, a second travel switch 520, and an auxiliary member 530, where the first travel switch 510 and the second travel switch 520 are disposed on the driving member 110 relatively, the auxiliary member 530 is disposed on the sliding member 120, and specifically, the auxiliary member 530 is connected to the sliding member 120 through the connection block 40 and is used to cooperate with the first travel switch 510 and the second travel switch 520 to control a movement travel of the driving member 110 to drive the sliding member 120.
It can be understood that when the first injection molding member 20 and the second injection molding member 30 need to be injection molded, the driving member 110 drives the sliding member 120 to move forward, and when the contact of the second travel switch 520 abuts against the auxiliary member 530, the driving member 110 stops driving the sliding member 120 to move forward, and at this time, the limiting member 410 abuts against the cavity wall of the fixed mold 10, and the sliding member 120 drives the link mechanism 300 to drive the core pulling mechanism 200 to be at the injection molding position; after the injection molding of the first injection molding member 20 and the second injection molding member 30 is completed, core pulling is required, and the driving member 110 drives the sliding member 120 to move reversely until the contact point of the first travel switch 510 abuts against the auxiliary member 530.
It should be noted that, in the present embodiment, the first travel switch 510 and the second travel switch 520 are both installed on the driving member 110, and the auxiliary member 530 is installed on the sliding member 120 through the connecting block 40, so that the travel switch does not move along with the movement of the sliding member 120, thereby avoiding the movement failure of the travel switch and ensuring the use sensitivity of the travel switch.
Specifically, referring to fig. 4, the auxiliary member 530 is provided with a first inclined plane 531 and a second inclined plane 532, the first inclined plane 531 and the second inclined plane 532 are disposed at an included angle, the first inclined plane 531 is used for abutting against the first travel switch 510 to trigger the first travel switch 510, the second inclined plane 532 is used for abutting against the second travel switch 520 to trigger the second travel switch 520 to control the moving travel of the sliding member 120 relative to the base, and after the second travel switch 520 abuts against the second inclined plane 532, the second travel switch 520 controls the driving member 110 to stop moving so that the sliding member 120 does not move any further; when the first travel switch 510 abuts against the first inclined surface 531, the first travel switch 510 controls the driving member 110 to stop moving, so that the sliding member 120 does not continue to retract.
In an embodiment, referring to fig. 3, the link mechanism 300 includes a first link 310 and a second link 320, the core-pulling mechanism 200 includes a first core-pulling member 210 and a second core-pulling member 220, the first link 310 and the second link 320 are respectively connected to the first core-pulling member 210 and the second core-pulling member 220, the first core-pulling member 210 is used for reversely buckling the first injection molding member 20, the second core-pulling member 220 is used for reversely buckling the second injection molding member 30, and the driving mechanism 100 respectively drives the first link 310 and the second link 320 to drive the first core-pulling member 210 and the second core-pulling member 220 to reversely synchronously rotate, so that the first core-pulling member 210 and the second core-pulling member 220 are respectively synchronously separated from the first injection molding member 20 and the second injection molding member 30.
It should be understood that, before injection molding, the driving mechanism 100 drives the first connecting rod 310 and the second connecting rod 320 to drive the first core-pulling member 210 and the second core-pulling member 220 to rotate synchronously in opposite directions until the limiting member 410 abuts against the cavity wall of the fixed mold 10, so that the first connecting rod 310 can keep the first injection molding member 20 at an injection molding position, and the second connecting rod 320 can keep the second injection molding member 30 at an injection molding position, so that displacement of the first core-pulling member 210 and the second core-pulling member 220 under the action of injection molding pressure is avoided; when the core is pulled, the driving mechanism 100 drives the first connecting rod 310 and the second connecting rod 320 to drive the first core pulling member 210 and the second core pulling member 220 to reversely and synchronously rotate, so that the first core pulling member 210 and the second core pulling member 220 are respectively and synchronously separated from the first injection molding member 20 and the second injection molding member 30, and injection molding and core pulling processes are completed.
The encapsulation mold is injection molded, a hard rubber product is placed on the fixed mold 10, then the driving piece 110 drives the sliding piece 120 to advance, and the sliding piece 120 drives the connecting rod mechanism 300 and the core pulling mechanism 200 to move oppositely so as to clamp the hard rubber product, so that a soft rubber position cavity is formed. Then the fixed die 10 and the movable die are clamped, soft rubber is injected to fill the cavity, after pressure maintaining and cooling, the front die and the rear die are opened, the driving member 110 drives the first connecting rod 310 and the second connecting rod 320 to drive the first core-pulling member 210 and the second core-pulling member 220 to reversely and synchronously rotate, so that the first core-pulling member 210 and the second core-pulling member 220 are respectively and synchronously separated from the first injection molding member 20 and the second injection molding member 30, and core pulling is completed.
In an embodiment, the injection mold further comprises an ejector plate and an ejection mechanism, wherein the ejector plate is connected with the ejection mechanism, and after core pulling is completed, the ejector plate drives the ejection mechanism to eject the product.
Further, the second core-pulling member 220 includes a core-pulling portion 221 and a connecting portion 222, where the core-pulling portion 221 is connected to the second connecting rod 320 through the connecting portion 222, the connecting portion 222 is provided with a first straight surface, the core-pulling portion 221 is provided with a second straight surface, and the first straight surface is connected to the second straight surface, so as to increase the contact area between the second connecting rod 320 and the core-pulling portion 221, according to a pressure formula, when the injection molding pressure is fixed, the greater the contact area is, the smaller the pressure is, that is, the pressure of the core-pulling portion 221 to the connecting portion 222 is reduced, so that the pressure of the second connecting rod 320 to the core-pulling portion 221 is reduced, according to the balance of forces, the pressure of the sliding member 120 to the second connecting rod 320 is reduced, so as to reduce the abutting force between the limiting member 410 and the cavity wall of the fixed mold 10, and avoid damage to the limiting member 410 or the cavity wall of the fixed mold 10 due to the excessive abutting.
In an embodiment, referring to fig. 4, the injection mold further includes two limiting strips 420, the two limiting strips 420 are disposed on the base opposite to each other, the sliding member 120 is sandwiched between the two limiting strips 420, and the limiting strips 420 are used for guiding the sliding member 120 to move along the first direction, so as to avoid the sliding member 120 from shifting during moving, and affecting the injection molding or core pulling effect.
The foregoing disclosure is illustrative of the present utility model and is not to be construed as limiting the scope of the utility model, which is defined by the appended claims.