Universal mold ejection device and method thereof

Abstract

The invention discloses a universal mold ejection device and method, and belongs to the technical field of mold ejection devices.The universal mold ejection device comprises an upper mold plate, a combined upper mold structure, a lower mold frame, a combined lower mold structure and a positioning detection assembly; a combined type upper die structure is installed on the upper die plate, and a plurality of receding grooves are symmetrically formed in the upper die plate. The lower die frame is located on the lower side of the upper die plate, and a combined lower die structure is installed on the lower die frame. The combined lower mold structure comprises an ejection assembly, a combined lower mold, a demolding assembly and a combined side mold; the combined lower die is mounted on the lower die frame; the combined lower mold, the combined upper mold structure and the plurality of groups of combined side molds jointly form a cavity for molding a plastic part; an ejection assembly is installed on the lower mold frame, and a demolding assembly is installed on the lower mold frame. The upper die plate and the lower die frame are provided with positioning detection assemblies used for detecting whether components are installed in place or not. In this way, multiple sets of molds share the same set of mold frame and ejection structure, and the production cost of the molds is reduced.

Description

Technical Field

[0001] This invention relates to the field of mold ejection device technology, and specifically to a universal mold ejection device and method. Background Technology

[0002] The mold ejection device is a device that ejects the workpiece from the mold cavity or core after the product is formed. Its design and quality directly affect the dimensional accuracy, surface quality and production efficiency of the product. When designing, special attention should be paid to smooth movement, efficient ejection, and ensuring that the product is not damaged.

[0003] For example, Chinese patent CN113021791B discloses a long-stroke ejection device and method for injection molds. After injection molding is completed, the device starts the drive mechanism to run. The drive gear drives the ejection chain to climb along the arc-shaped guide groove and enter the guide hole to provide lifting force to the workpiece, thereby realizing the ejection of the injection molded part.

[0004] However, each injection mold usually needs to be equipped with a different ejector device, which makes the mold design, research and development and manufacturing costs high; during production, the corresponding ejector device needs to be replaced every time a mold is changed.

[0005] Based on this, the present invention designs a universal mold ejection device and method to solve the above problems. Summary of the Invention

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a universal mold ejection device and method.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A universal mold ejection device includes an upper template, a combined upper mold structure, a lower mold frame, a combined lower mold structure, and a positioning detection component;

[0009] The upper template is equipped with a combined upper mold structure, and multiple clearance grooves are symmetrically opened on the upper template; the lower mold frame is located on the lower side of the upper template, and a combined lower mold structure is installed on the lower mold frame.

[0010] The combined lower mold structure includes an ejector assembly, a combined lower mold, a demolding assembly, and combined side molds. Multiple sets of the combined lower mold and combined side molds are provided. The combined lower mold is mounted on a lower mold base, and multiple combined side molds are mounted on the combined lower mold in a circumferential array at equal intervals. The combined lower mold, the combined upper mold structure, and the multiple sets of combined side molds together constitute a cavity for molding the plastic part. An ejector assembly for ejecting the plastic part is mounted on the lower mold base, and a demolding assembly for facilitating the separation of the combined side molds from the plastic part is also mounted on the lower mold base.

[0011] Positioning detection components are installed on the upper and lower mold frames to check whether the components are installed in place.

[0012] Furthermore, the combined upper mold structure includes a core-pulling assembly and multiple combined upper molds. The core-pulling assembly is mounted on the upper template, and the combined upper molds are mounted on the moving end of the core-pulling assembly. The combined upper mold, combined lower mold, and multiple sets of combined side molds together constitute a cavity for molding plastic parts.

[0013] Furthermore, the core-pulling assembly includes a core-pulling cylinder, a guide rod, and a mounting plate. The core-pulling cylinder is fixedly mounted on the upper template, and the moving end of the core-pulling cylinder is fixedly mounted on the mounting plate. Multiple guide rods are symmetrically fixedly mounted on the mounting plate, and the guide rods are slidably connected to the clearance groove. A conformal receiving groove for accommodating the combined upper mold is provided on the lower side of the mounting plate.

[0014] Furthermore, the combined upper mold includes a combination plate, mounting rod 1, upper mold platform, and mold core. The combination plate is inserted into the conformal receiving groove 1. Multiple mounting rod 1 are symmetrically fixedly installed on the upper side of the combination plate. Multiple mounting circular grooves are opened on the mounting plate, and the mounting circular grooves are aligned with the mounting rod 1. The upper side of the mounting rod 1 is threaded. The upper mold platform is fixedly installed at the bottom of the combination plate, and the mold core for molding plastic parts is fixedly installed at the bottom of the upper mold platform.

[0015] Furthermore, a support frame is fixedly installed on the lower mold frame, and a lower mold base is fixedly installed on the support frame. Multiple guide columns are symmetrically fixedly installed between the lower mold frame and the lower mold base. A conformal receiving groove II for accommodating the combined lower mold is provided on the lower mold base. Multiple mounting rods II are symmetrically fixedly installed on the lower mold base.

[0016] Furthermore, the ejection assembly includes an ejection cylinder, a movable stage, a movable ejection block, and positioning pins. The ejection cylinder is fixedly installed on the lower mold frame, and the movable stage is fixedly installed on the output end of the ejection cylinder. The movable stage is slidably connected to the guide column for limiting, and the movable ejection block is fixedly installed on the movable stage. Multiple positioning pins are fixedly installed on the movable ejection block.

[0017] Furthermore, the combined lower mold includes a lower mold platform, a bottom ejector block, and a conformal limiting plate. The lower mold platform is inserted into the conformal receiving groove II. The lower mold platform has multiple mounting holes aligned with the mounting rod II. A limiting groove I is provided in the middle of the lower mold platform. A conformal limiting plate is slidably installed in the limiting groove I. A bottom ejector block for bottom forming of the plastic part is fixedly installed on the conformal limiting plate. Positioning grooves are provided at the bottom of the bottom ejector block and the conformal limiting plate. The positioning grooves are inserted into positioning pins.

[0018] Furthermore, the demolding assembly includes a fixed frame, demolding cylinders, guide rods II, and a moving block. The fixed frame is fixedly installed on the lower mold base. Multiple demolding cylinders are evenly fixedly installed on the fixed frame in a circumferential array. A moving block is fixedly installed at the output end of the demolding cylinders. Guide rods II are symmetrically fixedly installed on the moving block. The guide rods II are slidably connected to the fixed frame for limiting. A combination slot is provided on the moving block.

[0019] Furthermore, the combined side mold includes a limiting slider, a combined insert block, and a combined module. A second limiting groove is provided on the lower mold platform. The limiting slider is slidably installed in the second limiting groove. A combined insert block is fixedly installed on the limiting slider and is inserted into the combined slot. A combined module is fixedly installed on the limiting slider. Multiple combined modules constitute a cavity for molding the side of the plastic part.

[0020] To better achieve the objectives of this invention, this invention also provides a mold ejection method, comprising the following steps:

[0021] Step 1: Select a set of combined lower mold, combined side mold and combined upper mold; install the combined upper mold on the moving end of the core pulling component, reset the demolding component, and do not obstruct the installation of the combined lower mold; then install the combined lower mold and combined side mold on the lower mold frame, connect the demolding component with the combined side mold, and connect the ejection component with the combined lower mold.

[0022] Step 2: Assemble the upper mold, lower mold, and side mold together to form the cavity; at this time, use the positioning detection component to check and confirm whether each part of the structure is accurately assembled.

[0023] Step 3: After injection molding is completed, the core-pulling assembly moves the combined upper mold, and the demolding assembly moves the combined side mold to complete the lateral demolding. Then, the ejection assembly moves the combined lower mold to eject the plastic part and achieve complete demolding.

[0024] Compared to existing technologies, the advantages of this invention are as follows: It selects a set of combined lower molds, combined side molds, and combined upper molds; the combined upper mold is installed on the moving end of the core-pulling assembly, and the demolding assembly is reset, without obstructing the installation of the combined lower mold; then, the combined lower mold and combined side molds are installed on the lower mold frame, connecting the demolding assembly with the combined side molds and the ejection assembly with the combined lower mold; thus, multiple molds can share the same mold frame and ejection structure; in actual production, only the corresponding combined lower mold, combined side mold, and combined upper mold need to be replaced according to production requirements, thereby reducing mold production costs; and reducing the space occupied by different molds, facilitating mold storage; the combined upper mold... The combined lower mold and combined side mold are assembled to form a cavity. At this time, the positioning detection component is used to check whether the structure of each part is accurately assembled. After injection molding, the core pulling component drives the combined upper mold to move, and the demolding component drives the combined side mold to move, completing the lateral demolding. Then, the ejection component drives the combined lower mold to move, realizing the ejection of the plastic part and achieving complete demolding. At the same time, for plastic parts that do not need to be moved by the combined side mold, the demolding component can directly make way for the combined lower mold and combined side mold, without flipping the installation of the combined lower mold and combined side mold. Moreover, the plastic part can be ejected from the bottom by the ejection component, further improving the applicability of the mold. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0026] Figure 1 A three-dimensional universal mold ejection device of the present invention Figure 1 ;

[0027] Figure 2 This is a front view of a universal mold ejection device according to the present invention;

[0028] Figure 3 For along Figure 2 A three-dimensional view after part of the structure has been removed along the AA direction;

[0029] Figure 4 A three-dimensional universal mold ejection device of the present invention Figure 2 ;

[0030] Figure 5 A three-dimensional universal mold ejection device of the present invention Figure 3 ;

[0031] Figure 6 for Figure 3 Enlarged view of point B in the middle;

[0032] Figure 7 This is a schematic diagram of the combined module and its connection structure;

[0033] Figure 8 This is a schematic diagram of the demolding cylinder and its connection structure.

[0034] The labels in the diagram represent:

[0035] 1. Upper mold plate; 11. Relief groove; 2. Combined upper mold structure; 21. Core pulling assembly; 211. Core pulling cylinder; 212. Guide rod one; 213. Mounting plate; 214. Conformal receiving groove one; 22. Combined upper mold; 221. Combined plate; 222. Mounting rod one; 223. Upper mold platform; 224. Mold core; 3. Lower mold frame; 31. Support frame; 32. Guide column; 33. Lower mold base; 34. Conformal receiving groove two; 35. Mounting rod two; 4. Combined lower mold structure; 41. Ejection assembly; 411. Ejection cylinder; 412. Moving platform; 413. Moving ejection block ; 414, Positioning pin; 415, Positioning groove; 42, Combined lower mold; 421, Lower mold platform; 422, Bottom ejector block; 423, Conforming limiting plate; 424, Limiting slide groove one; 43, Demolding assembly; 431, Fixing frame; 432, Demolding cylinder; 433, Guide rod two; 434, Moving block; 435, Combined slot; 44, Combined side mold; 441, Limiting slide groove two; 442, Limiting slider; 443, Combined insert block; 444, Combined module; 5, Positioning detection assembly; 51, Laser generating module; 52, Positioning through hole; 53, Laser receiving module. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0037] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0038] Example 1: In some embodiments, please refer to the accompanying drawings. Figures 1-3 A universal mold ejection device includes an upper template 1, a combined upper mold structure 2, a lower mold frame 3, a combined lower mold structure 4, and a positioning detection component 5;

[0039] The upper template 1 is equipped with a combined upper mold structure 2, and multiple clearance grooves 11 are symmetrically opened on the upper template 1; the lower mold frame 3 is located on the lower side of the upper template 1, and a combined lower mold structure 4 is installed on the lower mold frame 3.

[0040] like Figure 3 As shown, the combined lower mold structure 4 includes an ejector assembly 41, a combined lower mold 42, a demolding assembly 43, and combined side molds 44. Multiple sets of the combined lower mold 42 and combined side molds 44 are provided. The combined lower mold 42 is mounted on the lower mold base 3, and multiple combined side molds 44 are mounted on the combined lower mold 42 in a circumferential array at equal intervals. The combined lower mold 42, the combined upper mold structure 2, and the multiple sets of combined side molds 44 together constitute a cavity for molding the plastic part. An ejector assembly 41 for ejecting the plastic part is mounted on the lower mold base 3, and a demolding assembly 43 for facilitating the separation of the combined side molds 44 from the plastic part is mounted on the lower mold base 3.

[0041] Positioning detection components 5 are installed on the upper template 1 and the lower template 3 to detect whether the components are installed in place.

[0042] like Figure 2 and Figure 3 As shown, the combined upper mold structure 2 includes a core-pulling assembly 21 and multiple combined upper molds 22. The core-pulling assembly 21 is installed on the upper template 1, and the combined upper molds 22 are installed on the moving end of the core-pulling assembly 21. The combined upper mold 22, the combined lower mold 42, and multiple sets of combined side molds 44 together constitute a cavity for molding plastic parts.

[0043] In this embodiment, when the universal mold ejection device is working normally, a set of combined lower mold 42, combined side mold 44, and combined upper mold 22 are selected. The combined upper mold 22 is installed on the moving end of the core-pulling assembly 21, and the demolding assembly 43 is reset so as not to obstruct the installation of the combined lower mold 42. Then, the combined lower mold 42 and the combined side mold 44 are installed on the lower mold frame 3, so that the demolding assembly 43 is connected to the combined side mold 44, and the ejection assembly 41 is connected to the combined lower mold 42. Thus, multiple sets of molds can share the same mold frame and ejection structure. In actual production, it is only necessary to replace the corresponding combined lower mold 42, combined side mold 44, and combined upper mold 22 according to production needs, thereby reducing the production cost of the mold and reducing the space occupied by different molds, which facilitates the storage of the mold.

[0044] During injection molding, the upper mold 22, lower mold 42, and side mold 44 are combined to form a cavity. At this time, the positioning detection component 5 is used to detect whether each part of the structure is accurately assembled. After injection molding is completed, the core pulling component 21 moves the upper mold 22, and the demolding component 43 moves the side mold 44 to complete the lateral demolding. Then, the ejection component 41 moves the lower mold 42 to eject the plastic part and achieve complete demolding.

[0045] Meanwhile, for plastic parts that do not need to be moved by the combined side mold 44, the demolding component 43 can directly make way for the combined lower mold 42 and the combined side mold 44, without flipping the installation of the combined lower mold 42 and the combined side mold 44, and the plastic parts can be ejected from the bottom by the ejection component 41, further improving the applicability of the mold.

[0046] Example 2: In some embodiments, as a preferred embodiment of the present invention, such as... Figure 4 and Figure 5 As shown, the core-pulling assembly 21 includes a core-pulling cylinder 211, guide rods 212, and a mounting plate 213. The core-pulling cylinder 211 is fixedly mounted on the upper template 1. The moving end of the core-pulling cylinder 211 is fixedly mounted on the mounting plate 213. Multiple guide rods 212 are symmetrically fixedly mounted on the mounting plate 213. The guide rods 212 are slidably connected to the clearance groove 11. A conformal receiving groove 214 for accommodating the combined upper mold 22 is provided on the lower side of the mounting plate 213.

[0047] The combined upper mold 22 includes a combined plate 221, mounting rods 222, an upper mold platform 223, and a mold core 224. The combined plate 221 is inserted into the conformal receiving groove 214. Multiple mounting rods 222 are symmetrically fixedly installed on the upper side of the combined plate 221. Multiple mounting circular grooves are opened on the mounting plate 213, and the mounting circular grooves are aligned with the mounting rods 222. The upper side of the mounting rods 222 is threaded. The upper mold platform 223 is fixedly installed at the bottom of the combined plate 221, and the mold core 224 for molding plastic parts is fixedly installed at the bottom of the upper mold platform 223.

[0048] like Figures 4-6 As shown, a support frame 31 is fixedly installed on the lower mold frame 3, and a lower mold base 33 is fixedly installed on the support frame 31. Multiple guide columns 32 are symmetrically fixedly installed between the lower mold frame 3 and the lower mold base 33. A conformal receiving groove 34 for accommodating the combined lower mold 42 is provided on the lower mold base 33. Multiple mounting rods 35 are symmetrically fixedly installed on the lower mold base 33.

[0049] like Figures 4-8 As shown, the ejection assembly 41 includes an ejection cylinder 411, a moving stage 412, a moving ejection block 413, and positioning pins 414. The ejection cylinder 411 is fixedly installed on the lower mold frame 3. The moving stage 412 is fixedly installed on the output end of the ejection cylinder 411. The moving stage 412 is slidably connected to the guide post 32. The moving stage 412 is fixedly installed on the moving stage 412. Multiple positioning pins 414 are fixedly installed on the moving ejection block 413.

[0050] The combined lower mold 42 includes a lower mold platform 421, a bottom ejector block 422, and a conformal limiting plate 423. The lower mold platform 421 is inserted into the conformal receiving groove 34. The lower mold platform 421 has multiple mounting holes, which are aligned with the mounting rod 35. A limiting groove 424 is provided in the middle of the lower mold platform 421. The conformal limiting plate 423 is slidably installed in the limiting groove 424. The bottom ejector block 422 for forming the bottom of the plastic part is fixedly installed on the conformal limiting plate 423. The bottom of the bottom ejector block 422 and the conformal limiting plate 423 has a positioning groove 415, which is inserted into the positioning pin 414.

[0051] The demolding assembly 43 includes a fixed frame 431, demolding cylinders 432, guide rods 433, and a moving block 434. The fixed frame 431 is fixedly installed on the lower mold base 33. Multiple demolding cylinders 432 are evenly and uniformly fixedly installed in a circular array on the fixed frame 431. The moving block 434 is fixedly installed at the output end of the demolding cylinders 432. Guide rods 433 are symmetrically fixedly installed on the moving block 434. The guide rods 433 are slidably connected to the fixed frame 431 for limiting. A combination slot 435 is provided on the moving block 434.

[0052] The combined side mold 44 includes a limiting slider 442, a combined insert block 443, and a combined module 444. A second limiting groove 441 is provided on the lower mold base 421. The limiting slider 442 is slidably installed in the second limiting groove 441. The combined insert block 443 is fixedly installed on the limiting slider 442 and is inserted into the combined slot 435. The combined module 444 is fixedly installed on the limiting slider 442. Multiple combined modules 444 constitute a cavity for molding the side of the plastic part.

[0053] like Figure 3 As shown, the positioning detection component 5 includes a laser generating module 51 and a laser receiving module 53. The laser generating module 51 is fixedly installed on the upper template 1, and the laser receiving module 53 for receiving the light beam emitted by the laser generating module 51 is fixedly installed on the lower mold frame 3. Positioning through holes 52 are provided on the mounting plate 213, mounting rod 222, moving block 434, lower mold platform 421 and lower mold base 33 to facilitate the passage of light.

[0054] In this embodiment, when the lower mold frame 3 and the combined lower mold structure 4 are working normally, the combined plate 221 is placed into the conformal receiving groove 214, and the mounting rod 222 on the combined plate 221 passes through the mounting hole on the mounting plate 213 and is fixed by a nut, thereby combining the combined plate 221 and the mounting plate 213 together; the demolding cylinder 432 drives the moving block 434 to move outward under the limiting action of the guide rod 433, thereby increasing the space between the moving blocks 434 without affecting the installation of the combined lower mold 42 into the conformal receiving groove 34; the lower mold platform 421 is placed into the conformal receiving groove 34, and the mounting rod 222 is fixed by a nut. After passing through the mounting hole on the lower mold platen 421, 35 is fixed by a nut; during this process, the limiting slider 442, the combination insert 443 and the combination module 444 are moved to the outside, so that the combination insert 443 is inserted into the combination slot 435 on the moving block 434; then the demolding cylinder 432 drives the moving block 434 to move inward under the limiting action of the guide rod 433, thereby driving the limiting slider 442 and the combination module 444 to move inward through the combination slot 435 and the combination insert 443, until multiple combination modules 444 gather to form the cavity on the side of the plastic part; so that the mold can be used for plastic parts with concave structures on the side wall;

[0055] During injection molding, the core-pulling cylinder 211 drives the mounting plate 213 to move vertically under the limiting action of the guide rod 212. Through the conformal receiving groove 214, the combination plate 221, and the mounting rod 222, the upper mold platform 223 and the mold core 224 move vertically, so that the upper mold platform 223, the mold core 224, the lower mold platform 421, the bottom ejector block 422, and multiple combination modules 444 form the cavity for molding the plastic part. At this time, the laser generating module 51 emits a beam of light. If the positioning through holes 52 on the mounting plate 213, the mounting rod 222, the moving block 434, the lower mold platform 421, and the lower mold base 33 are aligned, the beam of light emitted by the laser generating module 51 will not be blocked and can be received by the laser receiving module 53. If the laser receiving module 53 does not receive the beam of light, it indicates that there is a misalignment of the positioning through holes 52 on the mounting plate 213, the mounting rod 222, the moving block 434, the lower mold platform 421, and the lower mold base 33.

[0056] After injection molding is completed, the core-pulling cylinder 211 drives the mounting plate 213, the combination plate 221, the mounting rod 222, the upper mold table 223 and the mold core 224 to move vertically upward, so that the mold core 224 is pulled out from the plastic part.

[0057] The demolding cylinder 432 drives the moving block 434 to reset, thereby driving the limiting slider 442, the combined insert block 443 and the combined module 444 to move outward to achieve lateral demolding; then the ejection cylinder 411 drives the moving stage 412, the moving ejection block 413 and the positioning pin 414 to move vertically, so that the positioning pin 414 is inserted into the positioning groove 415 at the bottom of the conformal limiting plate 423 to achieve positioning. Then the ejection cylinder 411 continues to drive the moving stage 412 and the moving ejection block 413 to move vertically, thereby driving the bottom ejection block 422 and the plastic part to move vertically, completing the ejection of the plastic part.

[0058] Example 3: In some embodiments, such as Figures 1-8 As shown, in a preferred embodiment of the present invention, a mold ejection method includes the following steps:

[0059] Step 1: Select a combination of lower mold 42, side mold 44, and upper mold 22; install the upper mold 22 on the moving end of the core-pulling assembly 21, and reset the demolding assembly 43 so as not to obstruct the installation of the lower mold 42; then install the lower mold 42 and side mold 44 on the lower mold frame 3, so that the demolding assembly 43 is connected to the side mold 44, and the ejection assembly 41 is connected to the lower mold 42.

[0060] Step 2: Assemble the upper mold 22, lower mold 42, and side mold 44 together to form a cavity; at this time, use the positioning detection component 5 to check whether each part of the structure is accurately assembled.

[0061] Step 3: After injection molding is completed, the core-pulling assembly 21 drives the combined upper mold 22 to move, and the demolding assembly 43 drives the combined side mold 44 to move, completing the lateral demolding. Then, the ejection assembly 41 drives the combined lower mold 42 to move, realizing the ejection of the plastic part and achieving complete demolding.

[0062] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A universal mold ejection device, comprising an upper mold plate (1), a combined upper mold structure (2), a lower mold frame (3), a combined lower mold structure (4), and a positioning detection assembly (5), characterized in that: the combined upper mold structure (2) is installed on the upper mold plate (1), and a plurality of accommodation grooves (11) are symmetrically formed on the upper mold plate (1); the lower mold frame (3) is located below the upper mold plate (1), and the combined lower mold structure (4) is installed on the lower mold frame (3); the combined lower mold structure (4) comprises an ejection assembly (41), a combined lower mold (42), a demolding assembly (43), and a combined side mold (44), and the combined lower mold (42) and the combined side mold (44) are provided in multiple groups; the combined lower mold (42) is installed on the lower mold frame (3), and a plurality of combined side molds (44) are installed on the combined lower mold (42) in a circumferential array at equal intervals; the combined lower mold (42), the combined upper mold structure (2), and the multiple groups of combined side molds (44) jointly form a cavity for molding a plastic part; the ejection assembly (41) for ejecting the plastic part is installed on the lower mold frame (3), and the demolding assembly (43) for facilitating separation of the combined side mold (44) from the plastic part is installed on the lower mold frame (3); the positioning detection assembly (5) for detecting whether the components are installed in place is installed on the upper mold plate (1) and the lower mold frame (3).

2. A generic mold ejection device according to claim 1, wherein, the combined upper mold structure (2) comprises a core-pulling assembly (21) and a plurality of combined upper molds (22), the core-pulling assembly (21) is installed on the upper mold plate (1), and the combined upper mold (22) is installed on the moving end of the core-pulling assembly (21); the combined upper mold (22), the combined lower mold (42), and the multiple groups of combined side molds (44) jointly form a cavity for molding a plastic part.

3. A generic mold ejection device according to claim 2, wherein, the core-pulling assembly (21) comprises a core-pulling cylinder (211), a guide rod one (212), and a mounting plate (213), the core-pulling cylinder (211) is fixedly installed on the upper mold plate (1), the moving end of the core-pulling cylinder (211) is fixedly installed with the mounting plate (213), a plurality of guide rods one (212) are fixedly installed on the mounting plate (213) in a symmetrical manner, and the guide rod one (212) is limitingly and slidably connected with the accommodation groove (11); a conformal accommodation groove one (214) for accommodating the combined upper mold (22) is formed on the lower side of the mounting plate (213).

4. A generic mould ejection device according to claim 3, characterised in that, the combined upper mold (22) comprises a combined plate (221), a mounting rod one (222), an upper mold table (223), and a mold core (224), the combined plate (221) is inserted into the conformal accommodation groove one (214), a plurality of mounting rods one (222) are fixedly installed on the upper side of the combined plate (221) in a symmetrical manner, a plurality of mounting circular grooves are formed on the mounting plate (213), and the mounting circular grooves are aligned with the mounting rod one (222); a thread is formed on the upper side of the mounting rod one (222); the upper mold table (223) is fixedly installed on the bottom of the combined plate (221), and the mold core (224) for molding a plastic part is fixedly installed on the bottom of the upper mold table (223).

5. A generic mould ejection device according to claim 4, characterised in that, The lower die frame (3) is fixedly installed with a support frame (31), the support frame (31) is fixedly installed with a lower die seat (33), a plurality of guide columns (32) are symmetrically and fixedly installed between the lower die frame (3) and the lower die seat (33); a conformable accommodating groove two (34) for accommodating a combined lower die (42) is formed in the lower die seat (33); a plurality of installation rods two (35) are symmetrically and fixedly installed on the lower die seat (33).

6. A generic mould ejection device according to claim 5, characterised in that, The ejecting assembly (41) comprises an ejecting cylinder (411), a moving table (412), a moving ejecting block (413) and a positioning pin (414), the ejecting cylinder (411) is fixedly installed on the lower die frame (3), the output end of the ejecting cylinder (411) is fixedly installed with the moving table (412), the moving table (412) is limitingly and slidingly connected with the guide column (32), the moving table (412) is fixedly installed with the moving ejecting block (413), and a plurality of positioning pins (414) are fixedly installed on the moving ejecting block (413).

7. A generic mould ejection device according to claim 6, characterised in that, The combined lower die (42) comprises a lower die table (421), a bottom ejecting block (422) and a conformable limiting plate (423), the lower die table (421) is inserted into the conformable accommodating groove two (34), a plurality of installation round holes are formed in the lower die table (421) and are aligned with the installation rods two (35); a limiting sliding groove one (424) is formed in the middle of the lower die table (421), the conformable limiting plate (423) is limitingly and slidingly installed in the limiting sliding groove one (424), the bottom ejecting block (422) for forming the bottom of a plastic part is fixedly installed on the conformable limiting plate (423); a positioning groove (415) is formed in the bottom of the bottom ejecting block (422) and the conformable limiting plate (423), and the positioning groove (415) is inserted into the positioning pin (414).

8. A generic mold ejection device according to claim 7, wherein, The demolding assembly (43) comprises a fixed frame (431), a demolding cylinder (432), a guide rod two (433) and a moving block (434), the fixed frame (431) is fixedly installed on the lower die seat (33), a plurality of demolding cylinders (432) are fixedly and uniformly installed on the fixed frame (431) in a circular array, the output end of the demolding cylinder (432) is fixedly installed with the moving block (434), the guide rod two (433) is symmetrically and fixedly installed on the moving block (434) and is limitingly and slidingly connected with the fixed frame (431); the moving block (434) is provided with a combined insertion groove (435).

9. A generic mould ejection device according to claim 8, characterised in that, The combined side die (44) comprises a limiting sliding block (442), a combined insertion block (443) and a combined module (444), a limiting sliding groove two (441) is formed in the lower die table (421), the limiting sliding block (442) is limitingly and slidingly installed in the limiting sliding groove two (441), the combined insertion block (443) is fixedly installed on the limiting sliding block (442) and is inserted into the combined insertion groove (435); the combined module (444) is fixedly installed on the limiting sliding block (442); a plurality of combined modules (444) form a cavity for forming the side edge of a plastic part.

10. A mold ejection method using the mold ejection device of claim 9, characterized by, The method comprises the following steps: Step one: select a set of combination lower die (42), combination side die (44) and combination upper die (22); the combination upper die (22) is installed in the moving end of the core pulling assembly (21), the demolding assembly (43) is reset, and the combination lower die (42) is not blocked; then the combination lower die (42) and the combination side die (44) are installed on the lower die frame (3), the demolding assembly (43) is connected with the combination side die (44), and the ejection assembly (41) is connected with the combination lower die (42); Step two: the combination upper die (22), the combination lower die (42) and the combination side die (44) are combined together to form a cavity; at this time, detection is carried out through the positioning detection assembly (5) to confirm whether the structures are accurately combined together; Step three: after the injection molding is completed, the core pulling assembly (21) drives the combination upper die (22) to move, the demolding assembly (43) drives the combination side die (44) to move, the side demolding is completed, then the ejection assembly (41) drives the combination lower die (42) to move, the ejection of the plastic part is realized, and the complete demolding is realized.

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