In-mold assembly apparatus

Abstract

The application discloses a kind of in-mold assembly equipment, it is related to injection molding equipment technical field, including movable mould, fixed mould, insert, ejector pin, needle plate, support block and linear drive piece etc., and injection molding is formed with injection molding assembly between fixed mould and movable mould, and insert and ejector pin are equipped on fixed mould, insert can be abutted on the first component and second component of injection molding assembly, and ejector pin can be abutted on second component, and ejector pin is connected with needle plate, support block is slidably arranged on needle plate and is abutted with insert, and the output end of linear drive piece is connected with needle plate.Linear drive piece drives needle plate, ejector pin and support block to move, support block drives insert to move, insert and ejector pin eject injection molding assembly, support block starts to slide and is separated from the abutment of insert, insert stops moving, and ejector pin pushes second component, so that second component is connected with first component to form final product, solve the problem that traditional out-of-mold assembly method needs to be assembled by additional manual or automatic equipment to component, improve the production efficiency of final product.

Description

Technical Field

[0001] This invention relates to the field of injection molding equipment technology, and in particular to an in-mold assembly device. Background Technology

[0002] Injection molding is a method of shaping industrial products. Injection molding equipment typically includes a mold and an injection machine. The injection machine injects molten raw material into the injection cavity of the mold, where the molten material hardens and solidifies to obtain a workpiece of the corresponding shape. In existing technologies, some specific final products are assembled from two or more different components. Usually, one mold can only mold one type of component, which requires multiple molds to mold different components separately before assembling them into the final product. This off-mold assembly method increases the number of injection machines and molds, occupying a significant amount of space. Furthermore, off-mold assembly requires additional manual assembly or automated equipment to assemble the components, resulting in lower production efficiency for the final product. Summary of the Invention

[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 in-mold assembly device that can solve the problem of low production efficiency in traditional out-of-mold assembly methods.

[0004] An in-mold assembly apparatus according to an embodiment of the present invention includes:

[0005] A moving mold, wherein the opening direction of the moving mold is parallel to the horizontal direction;

[0006] A fixed mold is detachably connected to a moving mold, and an injection cavity is formed between the fixed mold and the moving mold. The injection cavity is used to form an injection molded assembly. A first through hole is provided on the fixed mold, the axis of which is parallel to the mold opening direction. An insert is provided on the fixed mold, which passes through the first through hole. One end of the insert is located in the injection cavity and can abut against the first and second components of the injection molded assembly. The other end of the insert is connected to a columnar stop.

[0007] Multiple ejector pins are provided. The fixed mold has multiple second through holes. The axes of the multiple second through holes are parallel to the axes of the first through holes. The multiple ejector pins are respectively inserted into the multiple second through holes. One end of each of the multiple ejector pins can abut against the second component.

[0008] A needle plate is disposed on the side of the fixed mold away from the moving mold. The other ends of the plurality of ejector pins are connected to the needle plate. A groove is formed on the side of the needle plate away from the fixed mold. A third through hole is formed on the bottom wall of the groove. The third through hole is coaxially arranged with the first through hole. The insert passes through the third through hole. One end face of the columnar stop can abut against the bottom wall of the groove. A fourth through hole is formed on the needle plate. The axis of the fourth through hole is parallel to the horizontal direction and is parallel to the axis of the third through hole.

[0009] A lever, which is connected to the fixed mold and passes through the fourth through hole;

[0010] A support block and an elastic element are provided. The support block is slidably connected to the side of the needle plate away from the fixed mold. The support block has an oblique through hole with a diameter larger than that of the fourth through hole. The opening of the oblique through hole on the side closer to the fixed mold corresponds to the fourth through hole, and the opening of the oblique through hole on the side away from the fixed mold is close to the third through hole. One end of the elastic element is connected to the support block, and the other end of the elastic element is connected to the needle plate, so that the support block abuts against the other end face of the columnar stop.

[0011] A linear drive is provided, wherein the driving direction of the linear drive is parallel to the axial direction of the first through hole, and the output end of the linear drive is connected to the needle plate to drive the needle plate closer to or further away from the fixed mold. The lever can be inserted into the oblique through hole and drive the support block to move away from the third through hole so that the support block disengages from the other end face of the columnar stop.

[0012] It has at least the following beneficial effects:

[0013] An injection-molded assembly is formed between the fixed mold, the fixed mold, and the insert. After the injection-molded assembly is formed, the moving mold opens, and the linear drive drives the pin plate closer to the fixed mold. The pin plate drives the ejector pin and the support block to move, and the support block pushes the insert to move. The ejector pin and the insert eject the injection-molded assembly, and the first part of the injection-molded assembly abuts against the moving mold. The lever is inserted into the oblique through hole, driving the support block to move away from the third through hole, so that the support block disengages from the other end face of the columnar stop. The insert loses the push of the support block and stops moving. The ejector pin continues to push the second part, and the second part disengages from the insert and connects with the first part to form the final product, thus completing the assembly process. The linear drive drives the pin plate away from the fixed mold, and the end face of the columnar stop abuts against the bottom wall of the groove again. The lever leaves the oblique through hole, and the elastic element drives the support block to move closer to the third through hole, so that the support block abuts against the other end face of the columnar stop again, completing the reset process.

[0014] This in-mold assembly equipment allows for immediate assembly of the first and second components after molding, solving the problem of traditional out-of-mold assembly methods requiring additional manual or automated assembly. This improves the production efficiency of the final product. Furthermore, the in-mold assembly equipment requires only one set of mold and injection molding machine, saving space and avoiding warping, deformation, or shrinkage issues common in secondary operations. Moreover, no secondary assembly is required after in-mold assembly, reducing damage to the finished product caused by human factors during the assembly process.

[0015] According to an embodiment of the in-mold assembly equipment of the present invention, a connecting rod is provided on the fixed mold, and a blind hole is opened on the side of the fixed mold facing the needle plate. A first through hole is opened in the bottom wall of the blind hole, and the connecting rod passes through the blind hole and the third through hole. One end of the connecting rod is connected to the insert and can abut against the bottom wall of the blind hole. A columnar stop is provided on the end face of the other end of the connecting rod, and the diameter of the cross-section of the columnar stop is larger than the diameter of the blind hole.

[0016] According to an embodiment of the in-mold assembly equipment of the present invention, the end of the lever near the oblique through hole is rounded.

[0017] According to an embodiment of the in-mold assembly equipment of the present invention, a mounting groove is provided on the side of the needle plate away from the fixed mold, the groove is provided on the bottom wall of the mounting groove, the fourth through hole is provided on the bottom wall of the mounting groove, the support block is slidably connected to the bottom wall of the mounting groove, the elastic element is provided in the mounting groove, one end of the elastic element is connected to the support block, and the other end of the elastic element is connected to the side wall of the mounting groove, so that the support block is disengaged from the other end face of the columnar stop.

[0018] According to an embodiment of the present invention, the in-mold assembly equipment has a baffle plate on the needle plate, which can abut against the side of the support block away from the fixed mold. The baffle plate has a fifth through hole and a notch. The fifth through hole is used for the lever to pass through, and the notch is used to avoid the columnar stop block.

[0019] The in-mold assembly equipment according to an embodiment of the present invention further includes a guide rod, a guide hole is provided on the needle plate, the axial direction of the guide rod is parallel to the horizontal direction, and the guide rod is connected to the fixed mold and passes through the guide hole.

[0020] The in-mold assembly equipment according to an embodiment of the present invention further includes a connecting block and a fastening block. The connecting block has a fastening groove and is connected to the pin plate. The output end of the linear drive is connected to the fastening block, and the fastening block is fastened into the fastening groove.

[0021] According to an embodiment of the in-mold assembly equipment of the present invention, the linear drive component is a flat-push cylinder, the cylinder body of the flat-push cylinder is connected to the fixed mold, and the piston rod of the flat-push cylinder is connected to the fastener block.

[0022] According to an embodiment of the present invention, the number of ejector pins and the number of second through holes are both four. The four second through holes are arranged in a circumferential array with the axis of the first through hole as the center. The four ejector pins are respectively inserted into the four second through holes, and all four ejector pins can abut against the second component.

[0023] Additional aspects and advantages of the 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

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0025] Figure 1 This is a schematic diagram of the structure of the in-mold assembly equipment according to an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the interlocking structure of the injection molding components, ejector pins, and inserts.

[0027] Figure 3 for Figure 2 Schematic diagram of the structure of the injection molding assembly;

[0028] Figure 4 for Figure 3 A schematic diagram of the structure in which the first and second components are connected to form the final product;

[0029] Figure 5 for Figure 1 A cross-sectional view of the central mold.

[0030] Figure 6 This is a cross-sectional view of the needle plate and baffle.

[0031] Figure 7 A cross-sectional structural diagram of the needle plate, fixed mold, and linear drive component;

[0032] Figure 8 for Figure 7 A magnified view of a portion of point A in the middle;

[0033] Figure 9 for Figure 7 A magnified view of a portion of point B in the middle;

[0034] Figure 10 for Figure 9 A state diagram;

[0035] Figure 11 for Figure 9 Another state diagram;

[0036] Figure 12 for Figure 9 Another state diagram;

[0037] Figure label:

[0038] Moving model 100;

[0039] Fixed mold 200; First through hole 201; Second through hole 202; Blind hole 203; Insert 210; Connecting rod 220; Columnar stop 221; Ejector pin 230; Guide rod 240;

[0040] Needle plate 300; groove 301; fourth through hole 302; mounting groove 303; third through hole 304; support block 310; oblique through hole 311; elastic element 320; lever 330; baffle 340; fifth through hole 341; notch 342;

[0041] Linear drive component 400; latching block 410; connecting block 420; latching groove 421;

[0042] Injection molding component 500; first part 510; second part 520. Detailed Implementation

[0043] Embodiments of the present invention 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 the present invention, and should not be construed as limiting the present invention.

[0044] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do 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. Therefore, they should not be construed as limiting this invention.

[0045] In the description of this invention, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or the order in which the indicated technical features are presented.

[0046] In the description of this invention, unless otherwise explicitly defined, terms such as "setting," "installing," and "connecting" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0047] Injection assembly 500 refers to an injection molded part containing multiple components formed in an injection cavity, with sprue material connecting the multiple components.

[0048] refer to Figures 1 to 4 In this embodiment of the invention, the injection molding component 500 is composed of a first component 510 and a second component 520. The second component 520 is provided with a four-pronged strip structure, which can be fastened to the insert 210. The first component 510 and the second component 520 can be connected to form the final product.

[0049] In-mold assembly equipment includes:

[0050] Moving mold 100, the opening direction of moving mold 100 is parallel to the horizontal direction;

[0051] A fixed mold 200 is detachably connected to a movable mold 100. An injection cavity is formed between the fixed mold 200 and the movable mold 100. The injection cavity is used to form an injection molded assembly 500. A first through hole 201 is provided on the fixed mold 200. The axis of the first through hole 201 is parallel to the mold opening direction. An insert 210 is provided on the fixed mold 200. The insert 210 passes through the first through hole 201. One end of the insert 210 is located in the injection cavity and can abut against the first component 510 and the second component 520 of the injection molded assembly 500. The other end of the insert 210 is connected to a columnar stop 221.

[0052] Multiple ejector pins 230 are provided. Multiple second through holes 202 are provided on the fixed mold 200. The axes of the multiple second through holes 202 are parallel to the axis of the first through hole 201. The multiple ejector pins 230 are respectively inserted into the multiple second through holes 202. One end of each of the multiple ejector pins 230 can abut against the second component 520.

[0053] A needle plate 300 is located on the side of the fixed mold 200 away from the moving mold 100. The other ends of multiple ejector pins 230 are connected to the needle plate 300. A groove 301 is provided on the side of the needle plate 300 away from the fixed mold 200. A third through hole 304 is provided on the bottom wall of the groove 301. The third through hole 304 is coaxially arranged with the first through hole 201. An insert 210 passes through the third through hole 304. One end face of the columnar stop 221 can abut against the bottom wall of the groove 301. A fourth through hole 302 is provided on the needle plate 300. The axis of the fourth through hole 302 is parallel to the horizontal direction and is parallel to the axis of the third through hole 304.

[0054] The lever 330 is connected to the fixed mold 200 and passes through the fourth through hole 302;

[0055] The support block 310 and the elastic element 320 are slidably connected to the side of the needle plate 300 away from the fixed mold 200. The support block 310 has an oblique through hole 311, the diameter of which is larger than that of the fourth through hole 302. The opening of the oblique through hole 311 on the side closer to the fixed mold 200 corresponds to the fourth through hole 302. The opening of the oblique through hole 311 on the side away from the fixed mold 200 is close to the third through hole 304. One end of the elastic element 320 is connected to the support block 310, and the other end is connected to the needle plate 300, so that the support block 310 abuts against the other end face of the columnar stop 221.

[0056] The linear drive 400 has a driving direction that is parallel to the axial direction of the first through hole 201. The output end of the linear drive 400 is connected to the needle plate 300 to drive the needle plate 300 to move closer to or away from the fixed mold 200. The lever 330 can be inserted into the oblique through hole 311 and drive the support block 310 to move away from the third through hole 304 so that the support block 310 disengages from the other end face of the columnar stop 221.

[0057] The general workflow of the in-mold assembly equipment according to this invention is as follows:

[0058] Phase 1: Injection molding of the injection cavity forms the injection component 500;

[0059] Phase Two: Mold Opening of Moving Mold 100;

[0060] Phase Three: Reference Figure 9 The linear drive 400 drives the needle plate 300 to move toward the fixed mold 200. The needle plate 300 drives the support block 310 and the ejector pin 230 to move. The support block 310 pushes the columnar stop block 221 and the insert 210 to move. The ejector pin 231 and the insert 210 eject the injection molding assembly 500. The oblique through hole 311 moves toward the lever 330.

[0061] Phase Four: Reference Figure 10 The lever 330 presses against the inner wall of the oblique through hole 311, driving the support block 310 to move away from the third through hole 304. The elastic element 320 is compressed, and the ejector pin 230 and insert 210 continue to move toward the fixed mold 200.

[0062] Phase 5: Reference Figure 11 and Figure 12 When the support block 310 disengages from the other end face of the columnar stop block 221, the columnar stop block 221 loses the push of the support block 310, the insert 210 stops moving, and the first part 510 of the injection molding assembly 500 abuts against the moving mold 100.

[0063] Phase 6: Reference Figures 2 to 4The ejector pin 230 continues to push the second part 520 of the injection molding assembly 500 to move. The four-pronged strip structure on the second part 520 is stretched open, deformed and detached from the insert 210. The sprue material between the first part 510 and the second part 520 breaks. The second part 520 and the first part 510 are connected to form the final product.

[0064] Phase 7: Reference Figures 9 to 12 The linear drive 400 drives the needle plate 300 to move away from the fixed mold 200. The bottom wall of the groove 301 abuts against one end face of the columnar stop 221. The needle plate 300 drives the columnar stop 221 and the insert 210 to move.

[0065] Eighth stage: The oblique through hole 311 begins to move away from the lever 330, the elastic element 320 extends and drives the support block 310 to move toward the third through hole 304, the lever 330 is completely pulled out from the oblique through hole 311, the elastic element 320 returns to its original state, and the support block 310 and the other end face of the columnar stop 221 resume contact, thereby completing the reset of the insert 210, the ejector pin 230 and the support block 310;

[0066] Stage 9: Close the moving mold 100 and repeat Stage 1.

[0067] Understandably, this in-mold assembly equipment allows for immediate assembly of the first component 510 and the second component 520 after molding, solving the problem that traditional out-of-mold assembly methods require additional manual or automated assembly of components. This improves the production efficiency of the final product. Furthermore, this in-mold assembly equipment requires only one set of mold and injection molding machine, saving space and avoiding warping, deformation, or shrinkage issues common in secondary operations. Moreover, no secondary assembly is required after in-mold assembly, reducing damage to the finished product caused by human factors during the assembly process.

[0068] In this embodiment of the invention, the second component 520 of the injection molding assembly 500 is fastened to the insert 210. If the insert 210 does not move and only the ejector pin 230 moves, the injection molding assembly 500 cannot be ejected from the injection cavity. After the first component 510 of the injection molding assembly 500 comes into contact with the moving mold 100, if the insert 210 does not stop moving, the second component 520 cannot be separated from the insert 210 and connected with the first component 510, which will also cause the first component 510 to be squeezed and destroyed by the insert 210.

[0069] As an embodiment of the present invention, the support block 310 may be provided with a slider structure, the side of the needle plate 300 away from the fixed mold 200 may be provided with a slide groove, the length direction of the slide groove is perpendicular to the axial direction of the first through hole 201, the slider is slidably connected to the slide groove, the sliding direction of the support block 310 is perpendicular to the axial direction of the first through hole 201, and the elastic element 320 may be a spring.

[0070] refer to Figures 5 to 9 A connecting rod 220 is provided on the fixed mold 200. A blind hole 203 is provided on the side of the fixed mold 200 facing the needle plate 300. A first through hole 201 is provided on the bottom wall of the blind hole 203. The connecting rod 220 passes through the blind hole 203 and the third through hole 304. One end of the connecting rod 220 is connected to the insert 210 and can abut against the bottom wall of the blind hole 203. A columnar stop 221 is provided on the end face of the other end of the connecting rod 220. The diameter of the cross-section of the columnar stop 221 is larger than the diameter of the blind hole 203. Understandably, by setting the connecting rod 220 and the blind hole 203, one end of the connecting rod 220 can abut against the bottom wall of the blind hole 203. During the process of the insert 210 and the connecting rod 220 moving toward the moving mold 100, the bottom wall of the blind hole 203 restricts the movement of the connecting rod 220 and the insert 210, thus avoiding the problem that the second part 520 cannot detach from the insert 210 due to the excessive movement distance of the insert 210, which would cause the second part 520 and the first part 510 to be unable to connect.

[0071] refer to Figure 10 The end of the lever 330 near the oblique through hole 311 is rounded. It is understood that one end of the lever 330 needs to press against the inner wall of the oblique through hole 311 to drive the support block 310 to move. Making one end of the lever 330 rounded effectively reduces the pressure between the lever 330 and the oblique through hole 311 during the pressing process, thus extending the service life of both the lever 330 and the support block 310.

[0072] refer to Figure 6 and Figure 9 A mounting groove 303 is provided on the side of the needle plate 300 away from the fixed mold 200. A groove 301 is provided on the bottom wall of the mounting groove 303, and a fourth through hole 302 is provided on the bottom wall of the mounting groove 303. A support block 310 is slidably connected to the bottom wall of the mounting groove 303. An elastic element 320 is provided in the mounting groove 303. One end of the elastic element 320 is connected to the support block 310, and the other end of the elastic element 320 is connected to the side wall of the mounting groove 303, so that the support block 310 is disengaged from the other end face of the columnar stop 221. It can be understood that by setting the mounting groove 303 and placing both the support block 310 and the elastic element 320 in the mounting groove 303, the structure of the needle plate 300 can be made more compact. As an embodiment of the present invention, a slider structure can be provided on the support block 310, and a sliding groove can be provided on the bottom wall of the mounting groove 303. The length direction of the sliding groove is perpendicular to the axial direction of the first through hole 201, and the slider is slidably connected to the sliding groove.

[0073] refer to Figure 6 and Figure 9The needle plate 300 is equipped with a baffle 340, which abuts against the side of the support block 310 away from the fixed mold 200. The baffle 340 has a fifth through hole 341 and a notch 342. The fifth through hole 341 is used for the lever 330 to pass through, and the notch 342 is used to avoid the columnar stop 221. It can be understood that the baffle 340 blocks part of the opening of the mounting groove 303, and the support block 310 can abut against the baffle 340 and slide within the mounting groove 303, making the structure of the needle plate 300 more compact and simple, and also preventing some dust from falling into the mounting groove 303. At the same time, the baffle 340 also has a fifth through hole 341 for the lever 330 to pass through and a notch 342 to avoid the columnar stop 221, preventing the baffle 340 from obstructing the movement of the lever 330 and the columnar stop 221.

[0074] refer to Figure 7 The in-mold assembly equipment also includes a guide rod 240. A guide hole is provided on the needle plate 300. The axis of the guide rod 240 is parallel to the horizontal direction. The guide rod 240 is connected to the fixed mold 200 and passes through the guide hole. It can be understood that by setting the guide rod 240, the guide rod 240 restricts the vertical movement of the needle plate 300, preventing the needle plate 300 from shaking during movement, making the movement of the needle plate 300 more stable, and improving the stability of the in-mold assembly equipment.

[0075] refer to Figure 7 The in-mold assembly equipment also includes a connecting block 420 and a fastener block 410. The connecting block 420 has a fastening groove 421 and is connected to the needle plate 300. The output end of the linear drive component 400 is connected to the fastener block 410, and the fastener block 410 is fastened into the fastening groove 421. It can be understood that the needle plate 300 is connected to the output end of the linear drive component 400 through the connecting block 420 and the fastener block 410. During installation, first connect the fastener block 410 to the output end of the linear drive component 400, then align the sliding groove opening on the connecting block 420 with the fastener block 410 and fasten the fastener block 410 into the sliding groove, and finally connect the connecting block 420 to the needle plate 300. This installation process is simple and improves the installation efficiency of the in-mold assembly equipment.

[0076] refer to Figure 7 The linear drive component 400 is a push cylinder, the cylinder body of which is connected to the fixed mold 200, and the piston rod of which is connected to the latch block 410. It is understandable that the linear drive component 400 being a push cylinder, with its cylinder body connected to the fixed mold 200, makes the structure of the in-mold assembly equipment more compact; furthermore, the push cylinder has a simple structure and is easy to maintain.

[0077] refer to Figure 7There are four ejector pins 230 and four second through holes 202. The four second through holes 202 are arranged in a circular array with the axis of the first through hole 201 as the center. The four ejector pins 230 are respectively inserted into the four second through holes 202, and all four ejector pins 230 can abut against the second component 520. It can be understood that by setting four ejector pins 230, and all four ejector pins 230 abut against the second component 520, the force on the second component 520 can be made uniform during the process of the ejector pins 230 pushing the second component 520. This avoids deformation of the second component 520 due to uneven force, which could lead to problems in the subsequent connection between the second component 520 and the first component 510, thus improving the success rate of the connection between the second component 520 and the first component 510.

[0078] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0079] Of course, the present invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. An in-mold assembly device, characterized in that, include: A moving mold, wherein the opening direction of the moving mold is parallel to the horizontal direction; A fixed mold is detachably connected to a moving mold, and an injection cavity is formed between the fixed mold and the moving mold. The injection cavity is used to form an injection molded assembly. A first through hole is provided on the fixed mold, the axis of the first through hole is parallel to the mold opening direction, and an insert is provided on the fixed mold. The insert passes through the first through hole, one end of the insert is located in the injection cavity and can abut against the first component of the injection molded assembly, and the other end of the insert is connected to a columnar stop. Multiple ejector pins are provided, and multiple second through holes are provided on the fixed mold. The axes of the multiple second through holes are parallel to the axes of the first through holes. The multiple ejector pins are respectively inserted into the multiple second through holes, and one end of each of the multiple ejector pins can abut against the second component of the injection molding assembly. A needle plate is disposed on the side of the fixed mold away from the moving mold. The other ends of the plurality of ejector pins are connected to the needle plate. A groove is formed on the side of the needle plate away from the fixed mold. A third through hole is formed on the bottom wall of the groove. The third through hole is coaxially arranged with the first through hole. The insert passes through the third through hole. One end face of the columnar stop can abut against the bottom wall of the groove. A fourth through hole is formed on the needle plate. The axis of the fourth through hole is parallel to the horizontal direction and is parallel to the axis of the third through hole. A lever, which is connected to the fixed mold and passes through the fourth through hole; A support block and an elastic element are provided. The support block is slidably connected to the side of the needle plate away from the fixed mold. The support block has an oblique through hole with a diameter larger than that of the fourth through hole. The opening of the oblique through hole on the side closer to the fixed mold corresponds to the fourth through hole, and the opening of the oblique through hole on the side away from the fixed mold is close to the third through hole. One end of the elastic element is connected to the support block, and the other end of the elastic element is connected to the needle plate, so that the support block abuts against the other end face of the columnar stop. A linear drive is provided, wherein the driving direction of the linear drive is parallel to the axial direction of the first through hole, and the output end of the linear drive is connected to the needle plate to drive the needle plate closer to or further away from the fixed mold. The lever can be inserted into the oblique through hole and drive the support block to move away from the third through hole so that the support block disengages from the other end face of the columnar stop.

2. The in-mold assembly equipment according to claim 1, characterized in that: The fixed mold is provided with a connecting rod, and a blind hole is opened on the side of the fixed mold facing the needle plate. The first through hole is opened in the bottom wall of the blind hole. The connecting rod passes through the blind hole and the third through hole. One end of the connecting rod is connected to the insert and slidably disposed in the blind hole. The columnar stop is disposed on the end face of the other end of the connecting rod. The diameter of the cross-section of the columnar stop is larger than the diameter of the blind hole.

3. The in-mold assembly equipment according to claim 1, characterized in that: The end of the lever near the oblique through hole has a rounded head.

4. The in-mold assembly equipment according to claim 1, characterized in that: The needle plate has an installation groove on its side away from the fixed mold. The groove is located on the bottom wall of the installation groove. The fourth through hole is located on the bottom wall of the installation groove. The support block is slidably connected to the bottom wall of the installation groove. The elastic element is located in the installation groove. One end of the elastic element is connected to the support block, and the other end of the elastic element is connected to the side wall of the installation groove, so that the support block is disengaged from the other end face of the columnar stop.

5. The in-mold assembly equipment according to claim 4, characterized in that: The needle plate is provided with a baffle, which abuts against the side of the support block away from the fixed mold. The baffle has a fifth through hole and a notch. The fifth through hole is used for the lever to pass through, and the notch is used to avoid the columnar stop.

6. The in-mold assembly equipment according to claim 1, characterized in that: It also includes a guide rod, and the needle plate has a guide hole. The axis of the guide rod is parallel to the horizontal direction. The guide rod is connected to the fixed mold and passes through the guide hole.

7. The in-mold assembly equipment according to claim 1, characterized in that: It also includes a connecting block and a fastening block. The connecting block has a fastening groove and is connected to the needle plate. The output end of the linear drive is connected to the fastening block, and the fastening block is fastened into the fastening groove.

8. The in-mold assembly equipment according to claim 7, characterized in that: The linear drive component is a flat-push cylinder, the cylinder body of which is connected to the fixed mold, and the piston rod of which is connected to the latch block.

9. The in-mold assembly equipment according to claim 1, characterized in that: The number of ejector pins and the number of second through holes are both four. The four second through holes are arranged in a circular array with the axis of the first through hole as the center. The four ejector pins are respectively inserted into the four second through holes, and all four ejector pins can abut against the second component.

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