Injection mold with secondary ejection function

Abstract

The utility model discloses an injection mold with a secondary ejection function, which comprises a first mold base mechanism and a second mold base mechanism which is arranged on the lower side of the first mold base mechanism and can be matched with the first mold base mechanism in an opening and closing mode, the first mold base mechanism is provided with a first mold plate and a first mold core arranged on the first mold plate, and the second mold base mechanism is provided with a second mold plate, a fixed mold plate and an ejection plate assembly. The first mold plate is provided with a first mold core, the second mold plate is provided with a second mold core, the fixed mold plate is arranged between the second mold plate and the top plate assembly and provided with an insert, the insert penetrates through the second mold plate and the second mold core, during mold closing, the first mold core and the second mold core define a cavity, the upper portion of the insert extends into the cavity, and the top plate assembly is provided with an ejector pin penetrating through the fixed mold plate and the insert. The second mold plate and the ejector plate assembly can move together so that the second mold core and the ejector pin can jointly push an injection molding finished product on the upper portion of the insert, and the ejector plate assembly can move relative to the second mold plate so that the ejector pin can push the injection molding finished product on the second mold core. The die can meet the production requirements of small-size products, and the structural complexity of the die is reduced.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to an injection mold with a secondary ejection function. Background Technology

[0002] In existing injection molds, for products with long reinforcing ribs, a secondary ejection structure is typically used to eject the molded product from the mold core insert in order to protect the finished product and ensure smooth demolding. Existing secondary ejection structures usually include two sets of ejector plate assemblies, each equipped with corresponding ejector pins. After the upper and lower mold bases open, the injection molding machine drives the two sets of ejector plate assemblies to move sequentially, causing the ejector pins on different ejector plate assemblies to push the molded product out one after another. However, for smaller products, due to space limitations, it is difficult to set up two sets of ejector pins for sequential pushing. Moreover, setting up two sets of ejector plates and ejector pins would increase the mold volume and production costs, which is detrimental to production applications. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an injection mold with a secondary ejection function, which uses a second mold core and a set of ejectors to perform secondary ejection and demolding of the injection molded product. This reduces the need for a set of ejector plates and ejector pins, better adapts to the production needs of small-sized products, helps to reduce the structural complexity and production cost of the mold, and facilitates production application.

[0004] According to an embodiment of the present invention, an injection mold with a secondary ejection function includes a first mold base mechanism and a second mold base mechanism. The first mold base mechanism has a first template and a first mold core. The second mold base mechanism is located below the first mold base mechanism and can be closed or opened with the first mold base mechanism. The second mold base mechanism has a second template, a fixed template, and a top plate assembly. The second template has a second mold core. The fixed template is located between the second template and the top plate assembly and has an insert. The insert passes through the second template and the second mold core. When the first mold base mechanism and the second mold base mechanism are closed, a cavity is defined between the first mold core and the second mold core, and the upper part of the insert extends into the cavity. The top plate assembly has an ejector pin. The ejector pin passes through the fixed template and the insert and can extend to the upper side of the insert. The second template and the top plate assembly can move together, so that the second mold core and the ejector pin jointly push the injection molded product on the upper part of the insert. The top plate assembly can move relative to the second template, so that the ejector pin pushes the injection molded product on the second mold core.

[0005] According to the embodiment of this utility model, the injection mold with secondary ejection function has at least the following beneficial effects: In use, the first mold base mechanism and the second mold base mechanism move up and down relative to each other to realize the mold closing and opening between them; when the mold is closed, the first mold core and the second mold core cooperate to define the cavity, and the upper part of the insert extends into the cavity; after injection molding, the injection molded product is formed on the upper part of the insert, the first mold base mechanism and the second mold base mechanism move relative to each other to open the mold, so that the first mold plate and the second mold plate are separated, and the first mold core and the second mold core are separated. Subsequently, the injection molding machine drives the top plate assembly and the second mold plate to move together, so that the second mold core and the ejector pin move relative to the insert, so that the second mold core and the ejector pin push the injection molded product on the upper part of the insert together, thereby separating the injection molded product from the insert and realizing the first ejection. Subsequently, the injection molding machine drives the top plate assembly to move relative to the second mold plate, so that the ejector pin pushes the injection molded product on the second mold core, realizing the second ejection, and completing the second ejection and demolding of the injection molded product. This invention utilizes a second mold core and a set of ejectors for secondary ejection and demolding of the injection-molded product. Compared with the traditional secondary ejection structure, it can reduce the setting of a set of ejector plates and ejector pins, better adapt to the production needs of small-sized products, and help reduce the structural complexity of the mold and production costs, making it convenient for production applications.

[0006] According to some embodiments of the present invention, the second mold base mechanism is provided with a clutch component. The clutch component enables the top plate component and the second template to be linked or delinked. When the top plate component and the second template are linked, the top plate component can drive the second template to move together through the clutch component. When the top plate component and the second template are delinked, the top plate component can move relative to the second template.

[0007] According to some embodiments of the present invention, the clutch assembly includes a linkage member, a pushing member, and a trigger member. The second mold base mechanism has a base template, which is fixedly connected to the fixed template and has a movement space between them for the top plate assembly to move. The top plate assembly is disposed in the movement space. The trigger member is fixedly connected to the base template or the fixed template. The linkage member is fixedly connected to the second template and extends towards the top plate assembly. The pushing member is slidably connected to the top plate assembly and can extend or retract relative to the side of the top plate assembly. When the pushing member extends, it can push the linkage member to move. When the pushing member retracts, it can release the pushing on the linkage member. The trigger member has a trigger part, which is set according to the movement path of the top plate assembly and can drive the pushing member from the extended state to the retracted state during the upward movement of the top plate assembly.

[0008] According to some embodiments of the present invention, the triggering part is an inclined structure, and the pushing member is provided with a corresponding pushing inclined surface that cooperates with the triggering part.

[0009] According to some embodiments of the present invention, the clutch assembly further includes an elastic element that acts on the pusher, and the pusher can extend relative to the side of the top plate assembly under the action of the elastic element.

[0010] According to some embodiments of the present invention, the pusher is provided with a strip groove, the strip groove extends along the movement direction of the pusher, and the top plate assembly is connected to a first limiting member, the first limiting member being at least partially located in the strip groove.

[0011] According to some embodiments of the present invention, the fixed template is connected to a second limiting member, the second limiting member passes through the second template and has a limiting part above the second template, and the second template can move upward to abut against the limiting part.

[0012] According to some embodiments of this utility model, the second limiting member is a bolt, the fixing template is provided with a threaded hole, and the second limiting member is threadedly engaged with the threaded hole.

[0013] According to some embodiments of the present invention, both the side of the second template and the side of the fixed template are provided with side locks, and the side locks on the second template can cooperate with the side locks on the fixed template.

[0014] According to some embodiments of the present invention, the lower part of the ejector pin is slidably connected to the top plate assembly and can move horizontally relative to the top plate assembly. The insert is provided with a socket that mates with the ejector pin. The ejector pin is slidably inserted into the socket and the sliding direction is inclined relative to the longitudinal direction. When the ejector pin moves upward, it can move horizontally by slidingly engaging with the socket.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a schematic diagram of the structure of an injection mold with a secondary ejection function according to an embodiment of the present invention;

[0018] Figure 2 for Figure 1 A partial structural diagram of a medium-sized injection mold;

[0019] Figure 3 for Figure 2One of the schematic diagrams of the cross-sectional structure of a medium-sized injection mold;

[0020] Figure 4 for Figure 3 An enlarged schematic diagram of part A in the middle;

[0021] Figure 5 for Figure 2 Schematic diagram of the cross-sectional structure of a medium-sized injection mold (Part 2);

[0022] Figure 6 for Figure 5 Enlarged schematic diagram of part B in the middle;

[0023] Figure 7 for Figure 2 Schematic diagram of the cross-sectional structure of a medium-sized injection mold (Part 3);

[0024] Figure 8 for Figure 2 A partial structural exploded view of a medium-sized injection mold;

[0025] Figure 9 for Figure 2 A schematic diagram of the clutch assembly.

[0026] Figure label:

[0027] 10 injection-molded finished products;

[0028] First mold base mechanism 100, first template 110;

[0029] Second mold base mechanism 200, motion space 201, second template 210, second mold core 211, side lock 212, fixed template 220, insert 221, second limiting member 222, limiting part 223, threaded hole 224, insertion hole 225, top plate assembly 230, ejector pin 231, connector 232, base template 240;

[0030] Clutch assembly 300, linkage component 310, push component 320, push inclined surface 321, strip groove 322, trigger component 330, trigger part 331, elastic component 340, first limit component 350. Detailed Implementation

[0031] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0032] In the description of this utility model, it should be understood that if directional descriptions are involved, such as up, down, front, back, left, right, etc., indicating the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings, it is only for the convenience of describing this utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0033] In the description of this utility model, if words such as several, greater than, less than, exceeding, above, below, or within appear, several means one or more, multiple means two or more, greater than, less than, exceeding, etc. are understood to exclude the number itself, and above, below, or within are understood to include the number itself.

[0034] If the terms "first" and "second" are used only to distinguish technical features, they should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the order of the technical features indicated.

[0035] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0036] Reference Figure 1 , Figure 2 and Figure 5 An injection mold with a secondary ejection function includes a first mold base mechanism 100 and a second mold base mechanism 200. The first mold base mechanism 100 has a first template 110 with a first mold core (not shown in the figure). The second mold base mechanism 200 is located below the first mold base mechanism 100 and can be closed or opened with the first mold base mechanism 100. The second mold base mechanism 200 has a second template 210, a fixed template 220, and a top plate assembly 230. The second template 210 has a second mold core 211. The fixed template 220 is located between the second template 210 and the top plate assembly 230 and has an insert 221. The insert 221 passes through the second mold core 211. When the first mold base mechanism 100 and the second mold base mechanism 200 are closed, a cavity (not shown in the figure) is defined between the first mold base and the second mold base 211, and the upper part of the insert 221 extends into the cavity. The top plate assembly 230 is provided with an ejector pin 231. The ejector pin 231 passes through the fixed template 220 and the insert 221 and can extend to the upper side of the insert 221. The second template 210 and the top plate assembly 230 can move together, so that the second mold base 211 and the ejector pin 231 jointly push the injection molded product 10 on the upper part of the insert 221. The top plate assembly 230 can move relative to the second template 210, so that the ejector pin 231 pushes the injection molded product 10 on the second mold base 211.

[0037] Understandably, such as Figure 1 , Figure 2 and Figure 5 As shown, during use, the first mold base mechanism 100 and the second mold base mechanism 200 move up and down relative to each other to achieve mold closing and opening; during mold closing, the first mold core (not shown in the figure) and the second mold core 211 cooperate to define a cavity (not shown in the figure), and the upper part of the insert 221 extends into the cavity; refer to Figure 2 and Figure 5 After injection molding, the injection molded product 10 is formed on the upper part of the insert 221. The first mold base mechanism 100 and the second mold base mechanism 200 move relative to each other to open the mold, so that the first mold plate 110 and the second mold plate 210 separate, and the first mold core and the second mold core 211 separate. Then, the injection molding machine drives the top plate assembly 230 and the second mold plate 210 to move upward together, so that the second mold core 211 and the ejector pin 231 move relative to the insert 221, so that the second mold core 211 and the ejector pin 231 push the injection molded product 10 on the upper part of the insert 221 upward, thereby separating the injection molded product 10 from the insert 221 and realizing the first ejection. Then, the injection molding machine drives the top plate assembly 230 to move upward relative to the second mold plate 210, so that the ejector pin 231 pushes the injection molded product 10 on the second mold core 211 upward, realizing the second ejection, completing the second ejection and demolding of the injection molded product 10, reducing the possibility of demolding damage to the injection molded product 10. This invention utilizes a second mold core 211 and a set of ejector pins 231 to perform secondary ejection and demolding of the injection-molded finished product 10. Compared with the traditional secondary ejection structure, this invention only requires a set of top plate assembly 230 and ejector pins 231, which can reduce the setting of a set of top plate and ejector pins, better adapt to the production needs of small-sized products, and help reduce the structural complexity of the mold and production costs, making it convenient for production applications.

[0038] In practical applications, the specific structures of the first mold base mechanism 100 and the second mold base mechanism 200 can be set according to actual usage needs. The specific structure for the joint movement and relative movement between the top plate assembly 230 and the second template 210 will not be described in detail here, but will be explained in detail below.

[0039] In some embodiments, the second mold base mechanism 200 is provided with a clutch component 300. The clutch component 300 can enable the top plate component 230 and the second template 210 to be linked or delinked. When the top plate component 230 and the second template 210 are linked, the top plate component 230 can drive the second template 210 to move together through the clutch component 300. When the top plate component 230 and the second template 210 are delinked, the top plate component 230 can move relative to the second template 210.

[0040] Understandably, such as Figures 1 to 6As shown, a connector 232 is provided on the lower side of the top plate assembly 230. The connector 232 is used to connect with the push-pull rod of the injection molding machine, so that the injection molding machine drives the top plate assembly 230 to move up and down through the connector 232. Clutch assemblies 300 are provided on both the left and right sides of the second mold base mechanism 200. By setting the clutch assemblies 300, after the first mold base mechanism 100 and the second mold base mechanism 200 open the mold, the injection molding machine drives the top plate assembly 230 to move upward. At this time, the clutch assemblies 300 cause the top plate assembly 230 and the second mold plate 210 to move together. The plate assembly 230 can drive the second template 210 to move together via the clutch assembly 300, causing the second mold core 211 and the ejector pin 231 to jointly push the injection-molded product 10 on the insert 221 upwards. After the second template 210 moves a preset distance, the clutch assembly 300 disengages the linkage between the top plate assembly 230 and the second template 210, and the injection molding machine continues to drive the top plate assembly 230 upwards. The top plate assembly 230 moves upwards relative to the second template 210, causing the ejector pin 231 to push the injection-molded product 10 on the second mold core 211 upwards. By using the clutch assembly 300, the injection molding machine does not need to additionally drive the second template 210, which simplifies the drive structure and makes it easier to use.

[0041] In practical applications, in addition to the clutch assembly 300, two drive units can be set to drive the second template 210 and the top plate assembly 230 respectively. When the two need to move together, the two drive units synchronously drive the second template 210 and the top plate assembly 230 to move. When the two need to move relative to each other, the drive unit that drives the second template 210 to move stops working, and the other drive unit drives the top plate assembly 230 to move. The specific settings can be adjusted according to actual usage needs.

[0042] In some embodiments, the clutch assembly 300 includes a linkage member 310, a pushing member 320, and a trigger member 330. The second mold base mechanism 200 has a base template 240, which is fixedly connected to a fixed template 220 and has a movement space 201 between them for the top plate assembly 230 to move. The top plate assembly 230 is disposed in the movement space 201. The trigger member 330 is fixedly connected to the base template 240 or the fixed template 220, and the linkage member 310 is fixedly connected to the second template 210 and moves towards the top plate assembly. The member 230 extends, and the pusher 320 is slidably connected to the top plate assembly 230 and can extend or retract relative to the side of the top plate assembly 230. When the pusher 320 extends, it can push the linkage 310 to move. When the pusher 320 retracts, it can release the push on the linkage 310. The trigger member 330 has a trigger part 331, which is set according to the movement path of the top plate assembly 230. It can drive the pusher 320 from the extended state to the retracted state during the upward movement of the top plate assembly 230.

[0043] Understandably, such as Figures 2 to 9As shown, the second template 210, fixed template 220, top plate assembly 230, and base template 240 are arranged sequentially from top to bottom. A movement space 201 for the top plate assembly 230 to move is provided between the base template 240 and the fixed template 220. The top plate assembly 230 is located in the movement space 201 and has a pusher 320 slidably connected to its side. A linkage 310 is fixedly connected to the second template 210 and extends downwards. A trigger 330 is fixedly connected to the base template 240 and has a trigger part 331 corresponding to the movement path of the top plate assembly 230. Normally, the pusher 320 extends out from the side of the top plate assembly 230, as shown in the figure. Figure 3 and Figure 4 After the mold opens, the top plate assembly 230 moves upward. At this time, the pusher 320, which is in the extended state, can push the linkage 310 upward, thereby driving the second template 210 to move upward together, achieving linkage; see reference. Figure 5 and Figure 6 When the top plate assembly 230 moves upward a preset distance, the pusher 320 is triggered by the trigger part 331 of the trigger member 330 and retracts relative to the side of the top plate assembly 230, changing from an extended state to a retracted state. At this time, the pusher 320 in the retracted state can no longer push the linkage member 310 upward, thus releasing the linkage. If the top plate assembly 230 continues to move upward, it will generate relative movement with the second template 210, thereby realizing the clutch operation. The above structure is simple and reasonable, and easy to use.

[0044] In practical applications, in addition to the above-mentioned clutch structure, a spring can be set between the second template 210 and the top plate assembly 230, and a limiting member can be set corresponding to the second template 210. Utilizing the elastic force of the spring, the second template 210 is pushed upward when the top plate assembly 230 moves upward, thus achieving linkage. When the second template 210 moves to abut against the limiting member, the second template 210 cannot continue to move upward due to the stroke limitation of the limiting member. Therefore, the top plate assembly 230, which continues to move upward, will move relative to the second template 210 under the compression of the spring, thus disengaging the linkage. Of course, in addition to the above structure, the clutch assembly 300 can also be controlled by setting an electromagnet. For example, the extension and retraction of the pushing member 320 can be controlled by turning the electromagnet on and off, thereby realizing the linkage and disengagement between the pushing member 320 and the linkage member 310. The specific settings can be made according to the actual needs of use.

[0045] In some embodiments, the trigger part 331 has an inclined structure, and the pusher 320 is provided with a corresponding push inclined surface 321 that cooperates with the trigger part 331.

[0046] Understandably, such as Figure 5 , Figure 6 , Figure 8 and Figure 9As shown, the trigger part 331 has an inclined structure, and the pusher 320 is provided with a corresponding pusher inclined surface 321 that cooperates with the trigger part 331. When the top plate assembly 230 moves upward to the point where the pusher inclined surface 321 contacts the trigger part 331, the two form a wedge structure, thereby converting the longitudinal movement between the two into a lateral movement, driving the pusher 320 to move and retract relative to the side of the top plate assembly 230, realizing state switching. The structure is simple and easy to use.

[0047] In practical applications, in addition to the above structure, the trigger part 331 can also be a partially protruding roller, which drives the pusher 320 to move and retract by rolling abutting; or, the trigger part 331 can be a magnetic structure, which drives the pusher 320 to move and retract by magnetic attraction or magnetic repulsion. The specific settings can be made according to the actual needs of use.

[0048] In some embodiments, the clutch assembly 300 further includes an elastic element 340 that acts on a pusher 320, which is able to extend relative to the side of the top plate assembly 230 under the action of the elastic element 340.

[0049] Understandably, such as Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 9 As shown, the elastic element 340 is a spring, with its two ends acting on the pusher 320 and the top plate assembly 230 respectively. This causes the pusher 320 to tend to move away from the top plate assembly 230. Under the action of the elastic element 340, the pusher 320 extends relative to the side of the top plate assembly 230, so that after the top plate assembly 230 is reset, the pusher 320 can be restored and extended, making it convenient to use. In practical applications, the extension of the pusher 320 can also be achieved by manual operation by the worker, and the specific method can be changed according to the actual needs of use.

[0050] In some embodiments, the pusher 320 is provided with a strip groove 322, which extends along the movement direction of the pusher 320, and the top plate assembly 230 is connected to a first limiting member 350, which is at least partially located in the strip groove 322.

[0051] Understandably, such as Figure 3 , Figure 4 and Figure 9As shown, the pusher 320 moves parallel to the left-right direction. A corresponding strip groove 322 extending in the left-right direction is provided on the pusher 320. The first limiting member 350 is a bolt, which passes through the strip groove 322, passes through the pusher 320, and connects to the top plate assembly 230. Part of the first limiting member 350 is located within the strip groove 322, achieving a sliding connection between the pusher 320 and the top plate assembly 230. When the pusher 320 moves left-right, the first limiting member 350 moves relative to the strip groove 322 and restricts the travel of the pusher 320, which helps ensure the reliability of the pusher 320's movement, prevents excessive movement, and facilitates use. In practical applications, the strip groove 322 and the first limiting member 350 can be specifically set according to actual usage needs.

[0052] In some embodiments, the trigger 330 is provided with a slot (not shown in the figure) for the linkage 310 to be inserted. The lower end of the linkage 310 is inserted into the slot, and the pusher 320 can partially extend into the slot and abut against the linkage 310 to drive the linkage 320 to move.

[0053] Understandably, a slot is usually provided on the trigger 330. By using the linkage 310 and the slot to cooperate, the up and down movement direction of the linkage 310 can be better restricted, and its movement deviation can be avoided. At the same time, the up and down movement of the second template 210 can be guided, thereby improving the reliability of the movement.

[0054] In some embodiments, the fixed template 220 is connected to a second limiting member 222, the second limiting member 222 passes through the second template 210 and is provided with a limiting part 223 above the second template 210, and the second template 210 can move upward to abut against the limiting part 223.

[0055] Understandably, such as Figure 1 , Figure 2 and Figure 7 As shown, the second limiting member 222 passes through the second template 210 and has a limiting part 223 above the second template 210. In use, the second template 210 can move upward to abut against the limiting part 223. The second limiting member 222 restricts the vertical movement of the second template 210, which helps ensure the reliability of the movement of the second template 210, prevents excessive movement, and facilitates use. In practical applications, the specific structure of the second limiting member 222 can be set according to actual usage needs.

[0056] In some embodiments, the second limiting member 222 is a bolt, and the fixing template 220 is provided with a threaded hole 224, and the second limiting member 222 is threadedly engaged with the threaded hole 224.

[0057] Understandably, such as Figure 1 , Figure 2 and Figure 7As shown, the fixed template 220 has a threaded hole 224. The second limiting member 222 is a bolt, the lower part of which passes through the second template 210 and is threadedly engaged with the threaded hole 224 on the fixed template 220. The limiting part 223 is the head of the bolt and is located above the second template 210. The second template 210 can move upward to abut against the limiting part 223, thereby limiting the movement stroke of the second template 210. Its structure is simple. In use, the upper and lower positions of the limiting part 223 can be adjusted by screwing the second limiting member 222 through the threaded structure, thereby adjusting the limitation on the movement stroke of the second template 210, which is convenient to use. In practical applications, the second limiting member 222 can also adopt other structural forms, such as irregular structures, etc., which can be changed according to the actual use.

[0058] In some embodiments, both the side of the second template 210 and the side of the fixed template 220 are provided with side locks 212, and the side locks 212 on the second template 210 can cooperate with the side locks 212 on the fixed template 220.

[0059] Understandably, such as Figure 1 , Figure 2 , Figure 3 and Figure 8 As shown, the second template 210 is provided with side locks 212 on its periphery, and the fixed template 220 is also provided with side locks 212 on its periphery. In the mold-closed state, the side locks 212 on the second template 210 and the side locks 212 on the fixed template 220 cooperate to fix the relative position of the two templates, ensuring the mold remains stable during injection molding, preventing displacement or deformation between the two templates, and ensuring the smooth progress of the injection molding process. In practical applications, the specific structure of the side locks 212 can be set according to actual usage needs. Since the specific structure of the side locks 212 in this embodiment is known to those skilled in the art, it will not be described in detail here.

[0060] In some embodiments, the lower part of the ejector pin 231 is slidably connected to the top plate assembly 230 and can move horizontally relative to the top plate assembly 230. The insert 221 is provided with a socket 225 that mates with the ejector pin 231. The ejector pin 231 is slidably inserted into the socket 225 and the sliding direction is inclined relative to the longitudinal direction. When the ejector pin 231 moves upward, it can move horizontally through the sliding engagement with the socket 225.

[0061] Understandably, such as Figure 5As shown, the insertion hole 225 is vertically continuous, and the ejector pin 231 is slidably inserted into the insertion hole 225. Its lower part is slidably connected to the top plate assembly 230 and can move horizontally relative to the top plate assembly 230. When the top plate assembly 230 moves upward, it drives the ejector pin 231 to move upward. Since the sliding direction of the ejector pin 231 relative to the insertion hole 225 is inclined relative to the longitudinal direction, the ejector pin 231 not only pushes the injection molded product 10 in the cavity upward for demolding during the upward movement, but also moves horizontally relative to the top plate assembly 230. This horizontal movement allows the ejector pin 231 to move away from the snap-fit ​​on the injection molded product 10, thereby realizing the release of the injection molded product 10 and facilitating its demolding. In practical applications, the specific structure of the ejector pin 231 can also be changed according to the specific structure of the injection molded product 10.

[0062] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An injection mold with a secondary ejection function, characterized in that, The utility model relates to a first mould base mechanism has first mould plate, and the first mould plate is equipped with first mould core, second mould base mechanism is equipped with second mould plate, fixed mould plate and top plate assembly in the downside of first mould base mechanism and can be clamped or opened with first mould base mechanism, and second mould base mechanism has second mould plate, fixed mould plate and top plate assembly, second mould plate is equipped with second mould core, fixed mould plate is equipped between second mould plate and top plate assembly and is equipped with insert in fixed mould plate, and insert passes through second mould plate and second mould core, and when first mould base mechanism and second mould base mechanism are clamped, the upper portion of insert is inserted into cavity defined between first mould core and second mould core, and top plate assembly is equipped with ejector pin, and ejector pin passes through fixed mould plate and insert and can extend to the upside of insert, and second mould plate and top plate assembly can move together, and make second mould core and ejector pin jointly push the injection molding product of upper portion of insert, and top plate assembly can move relative to second mould plate, and make ejector pin push the injection molding product on second mould core. Second mould base mechanism is equipped with clutch assembly, and clutch assembly can make linkage or remove linkage between top plate assembly and second mould plate, and when linkage between top plate assembly and second mould plate, top plate assembly can drive second mould plate to move together through clutch assembly, and when removing linkage between top plate assembly and second mould plate, top plate assembly can move relative to second mould plate. Clutch assembly includes linkage, pusher and trigger, and second mould base mechanism has base mould plate, and base mould plate is fixedly connected with fixed mould plate and is equipped with movement space for the movement of top plate assembly between base mould plate and fixed mould plate, and top plate assembly is arranged in movement space, and trigger is fixedly connected with base mould plate or fixed mould plate, and linkage is fixedly connected with second mould plate and extends to top plate assembly, and pusher is slidingly connected with top plate assembly and can extend or retract relative to the side of top plate assembly, and when extending, pusher can push linkage to move, and when retracting, pusher can remove the pushing of linkage, and trigger has trigger part, and trigger part is arranged corresponding to the movement path of top plate assembly and can drive pusher to change from extended state to retracted state in the process of upward movement of top plate assembly.

2. The injection mold with secondary ejection function according to claim 1, characterized in that, Trigger part is inclined surface structure, and pusher is correspondingly provided with abutting inclined surface matched with trigger part.

3. The injection mold with secondary ejection function according to claim 2, characterized in that, Clutch assembly further includes elastic member, and elastic member acts on pusher, and pusher can extend relative to the side of top plate assembly under the action of elastic member.

4. The injection mold with secondary ejection function according to claim 3, characterized in that, Pusher is provided with strip-shaped groove, and strip-shaped groove extends along the movement direction of pusher, and top plate assembly is connected with first limiting piece, and first limiting piece is located at least partially in strip-shaped groove.

5. The injection mold with secondary ejection function according to claim 3, characterized in that, Fixed mould plate is connected with second limiting piece, and second limiting piece passes through second mould plate and is provided with limiting portion above second mould plate, and second mould plate can move upwardly to abut against limiting portion.

6. The injection mold with secondary ejection function according to claim 3, wherein ​ 7. The injection mold with secondary ejection function according to claim 1, characterized in that, ​ 8. The injection mold with secondary ejection function according to claim 7, characterized in that, The second limiting member is a bolt, the fixed template is provided with a threaded hole, and the second limiting member is in threaded cooperation with the threaded hole.

9. The injection mold with secondary ejection function according to claim 1, characterized in that, The side of the second template and the side of the fixed template are both provided with edge locks, and the edge lock on the second template can cooperate with the edge lock on the fixed template.

10. The injection mold with secondary ejection function according to claim 1, characterized in that, The lower part of the ejector pin is slidingly connected to the top plate assembly and can move horizontally relative to the top plate assembly, the insert is provided with a socket matched with the ejector pin, the ejector pin is slidingly inserted into the socket and the sliding direction of the ejector pin is inclined relative to the longitudinal direction, and the ejector pin can move horizontally by sliding cooperation with the socket when moving upward.

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