Strong demolding mechanism

Abstract

The utility model relates to the technical field of injection molds, in particular to a strong demolding mechanism which comprises a fixed mold assembly, a movable mold assembly and a sliding assembly. The fixed mold assembly comprises a fixed mold base, the movable mold assembly comprises a movable mold base, the fixed mold base and the movable mold base are buckled with each other, the fixed mold base is provided with a first cavity, the movable mold base is provided with a second cavity, and the first cavity is communicated with the second cavity; the movable mold assembly is connected with injection molding equipment, so that the movable mold assembly is driven by the injection molding equipment to slide towards one side far away from the fixed mold assembly, and the movable mold base and the fixed mold base are in a mold opening state; a first forming part and a sliding part are arranged in the first cavity, the first forming part is provided with a first sliding cavity in the mold opening direction of the movable mold base, the sliding part is located in the first sliding cavity, a first forming area is formed between the inner side wall of the first forming part and the outer side wall of the sliding part, and the sliding part is slidably connected to the fixed mold base in the mold opening direction of the movable mold base; the device has the effect of more efficiently and conveniently removing the product.

Description

Technical Field

[0001] This application relates to the technical field of injection molds, and in particular to a strong demolding mechanism. Background Art

[0002] An injection mold is a tool for producing plastic products; it is also a tool for endowing plastic products with a complete structure and precise dimensions. Injection molding is a processing method used when mass-producing some complex-shaped parts. Specifically, it means injecting the heat-melted plastic into the mold cavity at high pressure by an injection molding machine, and after cooling and solidifying, obtaining a molded product with specific dimensions, shapes, and functions, and taking out the molded product from the injection mold.

[0003] In related technologies, such as the product strong demolding ejection device disclosed in the Chinese patent with the publication number CN114932660A, which includes a rear mold, at least one hole is provided on the rear mold, and the hole is used for shaping the product; an insert pin, the insert pin penetrates the rear mold, passes through the hole, and matches the through hole on the product; a ejector pin, the ejector pin penetrates the rear mold and is used to eject the product; a first limiting structure is also provided on the rear mold, and a second limiting structure matching the first limiting structure is provided on the insert pin. The first limiting structure and the second limiting structure jointly act to limit the displacement of the insert pin along the direction perpendicular to the bottom surface of the rear mold. The space for forming the product is between the front mold and the rear mold. When the injection mold is separated, the formed product remains on the hole of the rear mold, and then the product is smoothly demolded through the combined action of the insert pin and the ejector pin.

[0004] In view of the above related technologies, during demolding, it is necessary to cooperate with the insert pin and the ejector pin to eject the product, and this process is relatively cumbersome. Therefore, how to eject the product in a more efficient and convenient way becomes the problem to be solved in this application. Utility Model Content

[0005] In order to eject the product more efficiently and conveniently, this application provides a strong demolding mechanism.

[0006] A strong demolding mechanism provided by this application adopts the following technical solutions:

[0007] A strong demolding mechanism includes a fixed mold assembly, a moving mold assembly, and a sliding assembly;

[0008] The fixed mold assembly includes a fixed mold base, the moving mold assembly includes a moving mold base, the fixed mold base and the moving mold base are buckled with each other, the fixed mold base is provided with a first cavity, the moving mold base is provided with a second cavity, and the first cavity is communicated with the second cavity;

[0009] The moving mold assembly is connected to the injection equipment so that the injection equipment drives the moving mold assembly to slide away from the fixed mold assembly, so that the moving mold base and the fixed mold base are in an open mold state;

[0010] A first forming member and a sliding member are provided in the first cavity. The first forming member is provided with a first sliding cavity along the mold opening direction of the moving mold base. The sliding member is located in the first sliding cavity. A first forming area is formed between the inner side wall of the first forming member and the outer side wall of the sliding member. The sliding member is slidably connected to the fixed mold base along the mold opening direction of the moving mold base.

[0011] The fixed mold assembly further includes a sealing plate. The sealing plate is provided on the side of the fixed mold base away from the moving mold base. The sealing plate is directly or indirectly connected to the fixed mold base. A sliding groove is provided on the side of the sealing plate close to the fixed mold base.

[0012] The sliding assembly includes a first elastic member. The telescopic direction of the first elastic member is parallel to the mold opening direction of the moving mold base. One end of the first elastic member is fixedly connected to the top wall of the sliding groove, and the other end is directly or indirectly connected to the sliding member. The first elastic member has a force to drive the sliding member to move away from the sealing plate side under recoverable deformation.

[0013] By adopting the above technical solution, the moving mold assembly is connected to the injection molding equipment. The injection molding equipment drives the moving mold assembly to move away from the fixed mold base side. The fixed mold base and the moving mold base are separated from each other. The first elastic member changes from the compressed state to the normal state, so that the sliding member slides toward the moving mold base side, and further ejects the product out of the first forming area.

[0014] Optionally, the sliding member has an integrally connected sliding portion and a forming portion. The forming portion is located on the side of the sliding portion close to the moving mold base. The inner diameter of the forming portion is larger than the inner diameter of the sliding portion. The first sliding cavity includes a connected straight cavity and an arc cavity. The outer peripheral wall of the sliding portion fits with the inner peripheral wall of the straight cavity. The outer peripheral wall of the forming portion and the inner peripheral wall of the arc cavity form the first forming area.

[0015] By adopting the above technical solution, in order to eject the product more smoothly, the sliding member has a sliding portion and a forming portion. The sliding portion fits with the straight cavity to guide the sliding of the sliding portion by the straight cavity. The forming portion fits with the arc cavity so that the forming portion can form the product and can eject the formed product.

[0016] Optionally, the fixed mold assembly further includes an upper mold sleeve, and the moving mold assembly further includes a lower mold sleeve. The upper mold sleeve is provided with a first accommodating cavity for accommodating the fixed mold base along the mold opening direction of the moving mold base. The upper mold sleeve is detachably connected to the fixed mold base. The sealing plate is detachably connected to the upper mold sleeve. The lower mold sleeve is provided with a second accommodating cavity for accommodating the moving mold base along the mold opening direction of the moving mold base. The lower mold sleeve is detachably connected to the moving mold base.

[0017] By adopting the above technical solution, by providing an upper die sleeve and a lower die sleeve, the fixed die base and the movable die base are protected by the upper die sleeve and the lower die sleeve.

[0018] Optionally, the sliding component further includes a first guiding member fixedly connected between the first elastic member and the sliding member, and the outer peripheral wall of the first guiding member is in fit with the inner peripheral wall of the sliding groove.

[0019] By adopting the above technical solution, by providing the first guiding member, the sliding of the sliding member in the movable die opening direction is guided by the first guiding member.

[0020] Optionally, it further includes a second forming member and a base. The base is disposed on the side of the upper die sleeve away from the lower die sleeve. There is a space between the base and the lower die sleeve. The base is directly or indirectly connected to the lower die sleeve. One end of the second forming member is fixedly connected to the base, and the other end is connected with an undercut mold. The undercut mold passes through the second cavity and is located in the first sliding cavity. A second forming area is formed between the undercut mold and the forming portion. The second forming area is communicated with the first forming area. One end of the forming portion of the sliding member contacts the second forming member.

[0021] By adopting the above technical solution, since the product has an undercut, by providing the second forming member, one end of the second forming member is connected with an undercut mold, so that the undercut portion of the product is formed between the undercut mold and the forming portion.

[0022] Optionally, the second forming member is provided with an installation groove along the movable die base opening direction, and a cooling pipe is arranged in the installation groove.

[0023] By adopting the above technical solution, when injecting the plastic product, in order to accelerate the cooling and solidification of the raw material, by providing the cooling pipe, the temperature is further transferred from the second forming member to the first forming area, so as to reduce the temperature during the injection molding process.

[0024] Optionally, it further includes an injection molding part. The sealing plate is provided with a first injection hole for accommodating the injection molding part along the movable die base opening direction. The fixed die base is provided with a second injection hole along its own depth direction. One end of the injection molding part is directly or indirectly connected to the inner wall of the first injection hole, and the other end passes through the second injection hole and is communicated with the first forming area.

[0025] By adopting the above technical solution, by providing the injection molding part, the raw material is poured into the first forming area through the injection molding part.

[0026] Optionally, the lower mold sleeve is further provided with a first guide column and a guide sleeve, the guide sleeve and the first guide column are both parallel to the mold opening direction of the movable mold seat, the lower mold sleeve is penetrated by a first guide hole along the mold opening direction of the movable mold seat, the guide sleeve is located in and fixedly connected to the first guide hole, one end of the first guide column is located in the guide sleeve and can slide in the guide sleeve, and the other end is passed through and fixedly connected to the upper mold sleeve.

[0027] By adopting the above technical solution, in order to guide the sliding of the movable mold base along the fixed mold base, it is achieved by providing a first guide column and a guide sleeve.

[0028] Optionally, a connecting piece is provided between the lower mold sleeve and the base, both ends of the base are fixedly connected to one of the connecting pieces, an installation cavity is provided between the two connecting pieces, an injection molding device is fixedly connected to the connecting piece, and the injection molding device can be fixedly connected to the connecting piece.

[0029] By adopting the above technical solution, in order to improve the stability of the connection between the movable mold seat and the base, a connecting piece is provided between the lower mold sleeve and the base, so that the stability of the lower mold sleeve is improved by the connecting piece.

[0030] Optionally, it also includes a second guide column, which is parallel to the mold opening direction of the movable mold seat. One end of the second guide column is fixedly connected to the base, and the other end passes through the connecting piece and is inserted into the lower mold sleeve. The lower mold sleeve slides relative to the connecting piece.

[0031] By adopting the above technical solution and providing the second guide column, the lower mold sleeve can be guided along the sliding of the connecting piece.

[0032] In summary, the present application includes at least one of the following beneficial technical effects:

[0033] 1. The present application sets a sliding assembly so that when the injection molding equipment is connected to the movable mold assembly and drives the movable mold base to slide toward the side away from the fixed mold base, the elastic member changes from a compressed state to a normal state, and the sliding member further ejects the product, and the product is ejected from the first molding area of ​​the fixed mold, further reducing the possibility of product strain or damage;

[0034] 2. The present application provides a cooling pipe, which can cool down the product during injection molding and accelerate molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the structure of injection molding products;

[0036] Figure 2 It is a structural schematic diagram of the movable mold assembly and the fixed mold assembly of the present application;

[0037] Figure 3 It is a schematic structural diagram between the sliding part and the first forming part of this application;

[0038] Figure 4 It is a schematic structural diagram of the upper die sleeve and the lower die sleeve of this application;

[0039] Figure 5 It is a schematic structural diagram of the sliding component of this application;

[0040] Figure 6 It is a schematic structural diagram between the cooling pipe and the second forming part of this application;

[0041] Figure 7 It is a schematic structural diagram of the connection between the first guide post and the lower die sleeve of this application;

[0042] Figure 8 It is a schematic structural diagram of the connection between the second guide post and the base of this application;

[0043] Figure 9 It is a schematic structural diagram of the reset component of this application;

[0044] Figure 10 It is a schematic structural diagram of the injection molded part from the first perspective of this application;

[0045] Figure 11 It is a schematic structural diagram of the injection molded part from the second perspective of this application.

[0046] Explanation of reference numerals: 01, product; 1, fixed mold assembly; 11, fixed mold base; 111, first cavity; 112, second injection hole; 12, upper die sleeve; 121, first accommodating cavity; 13, sealing plate; 131, sliding groove; 2, moving mold assembly; 21, moving mold base; 211, second cavity; 22, lower die sleeve; 221, second accommodating cavity; 222, first guide post; 223, guide sleeve; 224, first guide hole; 225, second guide post; 226, guide groove; 227, accommodating groove; 23, second forming part; 231, reverse buckle mold; 232, second forming area; 233, installation groove; 234, cooling pipe; 24, base; 241, connecting piece; 242, installation cavity; 243, fixing seat; 3, first forming part; 31, first sliding cavity; 311, straight cavity; 312, arc cavity; 4, sliding part; 41, sliding portion; 42, forming portion; 43, first forming area; 5, sliding component; 51, first elastic member; 52, first guiding member; 521, installation groove; 522, cooling pipe; 6, reset component; 61, third guide post; 62, second elastic member; 7, injection molded part; 71, first injection hole; 72, mounting seat. Detailed implementation manners

[0047] The following will further describe this application in detail Figures 1 - 11 in conjunction with the attached

[0048] An embodiment of the present application discloses a strong demolding mechanism. Refer to Figure 1 and Figure 2 , the strong demolding mechanism includes a fixed mold assembly 1 and a movable mold assembly 2. The fixed mold assembly includes a fixed mold base 11, and the movable mold assembly 2 includes a movable mold base 21. The fixed mold base 11 and the movable mold base 21 are buckled with each other. The fixed mold base 11 is provided with a first cavity 111, and the movable mold base 21 is provided with a second cavity 211. The first cavity 111 is communicated with the second cavity 211. A first molding member 3 and a sliding member 4 are arranged in the first cavity 111. The first molding member 3 is provided with a first sliding cavity 31 along the depth direction of the fixed mold base 11. The sliding member 4 is located in the first sliding cavity 31. A first molding area 43 is formed between the inner side wall of the first molding member 3 and the outer side wall of the sliding member 4. The sliding member 4 is slidably connected to the fixed mold base 11 along the mold opening direction of the movable mold base 21. During use, the movable mold assembly 2 is connected to an injection molding device, and the injection molding device drives the movable mold base 21 to slide along the mold opening direction of the movable mold base 21, so that the fixed mold base 11 and the movable mold base 21 are changed from the buckled state to the separated state. At the same time, the sliding member 4 slides along the depth direction of the fixed mold base 11, so as to eject the product 01 in the first molding area 43 by the sliding member 4.

[0049] Refer to Figure 2 and Figure 3 , since a part of the injection molded product 01 is approximately hollow spherical, in order to form an injection cavity matching the product 01, the sliding member 4 has a slidable portion 41 and a molding portion 42 connected integrally. The molding portion 42 is located on the side of the slidable portion 41 close to the movable mold base 21. The molding portion 42 is approximately spherical, the inner diameter of the molding portion 42 is larger than the inner diameter of the slidable portion 41. The first sliding cavity 31 includes a communicated straight cavity 311 and an arc cavity 312. The outer peripheral wall of the slidable portion 41 is attached to the inner peripheral wall of the straight cavity 311, and the outer peripheral wall of the molding portion 42 and the inner peripheral wall of the arc cavity 312 form the first molding area 43.

[0050] Refer to Figure 4 and Figure 5 , in order to protect the fixed mold base 11 and the movable mold base 21, the fixed mold assembly 1 further includes an upper mold sleeve 12 and a sealing plate 13, and the movable mold assembly 2 further includes a lower mold sleeve 22. The upper mold sleeve 12 is provided with a first accommodation cavity 121 for accommodating the fixed mold base 11 through the depth direction of the fixed mold base 11. The upper mold sleeve 12 is detachably connected to the fixed mold base 11, and the sealing plate 13 is detachably connected to the upper mold sleeve 12. The lower mold sleeve 22 is provided with a second accommodation cavity 221 for accommodating the movable mold base 21 through the depth direction of the fixed mold base 11. The lower mold sleeve 22 is detachably connected to the movable mold base 21.

[0051] Refer to Figure 5, in order to drive the sliding of the sliding member 4 along the mold opening direction of the moving mold base 21, the strong demolding mechanism further includes a sliding assembly 5. The sliding assembly 5 includes a first elastic member 51. A sliding groove 131 is formed on one side of the sealing plate 13 close to the upper mold sleeve 12. The telescopic direction of the first elastic member 51 is parallel to the mold opening direction of the moving mold base 21. One end of the first elastic member 51 is fixedly connected to the top wall of the sliding groove 131, and the other end is directly or indirectly connected to the sliding member 4. In this embodiment, the first elastic member 51 is a compression spring. The first elastic member 51 has a force to drive the sliding member 4 to move away from the sealing plate 13 under recoverable deformation. When the fixed mold base 11 and the moving mold base 21 are engaged with each other, the first elastic member 51 is in a compressed state. When the moving mold base 21 is separated from the fixed mold base 11, the first elastic member 51 changes from the compressed state to the normal state.

[0052] Referring to Figure 5 , in order to guide the sliding of the sliding member 4, the sliding assembly 5 further includes a first guiding member 52. The first guiding member 52 is fixedly connected between the first elastic member 51 and the sliding member 4. The outer peripheral wall of the first guiding member 52 is attached to the inner peripheral wall of the sliding groove 131 to guide the sliding of the sliding member 4 along the mold opening direction of the moving mold base 21 by the first guiding member 52. When the fixed mold base 11 and the moving mold base 21 are engaged with each other, one end of the sliding portion 41 of the sliding member 4 is located in the sliding groove 131.

[0053] Referring to Figure 5 and Figure 6 , since the injection-molded product 01 has an undercut, in order to facilitate the demolding of the undercut product 01, the moving mold assembly 2 further includes a second molding member 23 and a base 24. The base 24 is provided on the side of the upper mold sleeve 12 away from the lower mold sleeve 22. The base 24 is connected to the lower mold sleeve 22 through a connecting member 241. One end of the base 24 is fixedly connected with a connecting member 241. One end of the second molding member 23 is integrally connected with an undercut mold 231. The end of the second molding member 23 away from the undercut mold 231 is fixedly connected to the base 24. The undercut mold 231 passes through the second cavity 211 and is located in the first sliding cavity 31. A second molding area 232 is formed between the undercut mold 231 and the molding portion 42. The second molding area 232 communicates with the first molding area 43, and one end of the molding portion 42 of the sliding member 4 contacts the second molding member 23. That is to say, the molded product 01 is located in the first molding area 43 and the second molding area 232.

[0054] Referring to Figure 5 and Figure 6During demolding, the upper mold sleeve 12 is in a stationary state relative to the lower mold sleeve 22, and the injection molding equipment drives the lower mold sleeve 22 to slide along the mold opening direction of the movable mold seat 21 toward the side away from the fixed mold seat 11, so that the movable mold seat 21 and the fixed mold seat 11 are separated. At this time, the first elastic member 51 changes from a compressed state to a normal state. During this process, the first guide member 52 moves toward the side close to the fixed mold seat 11, driving the sliding member 4 to slide toward the side close to the movable mold seat 21, so that the sliding member 4 can push out the formed product 01. Since the product 01 is pushed out along the fixed mold seat 11 toward the movable mold seat 21, the occurrence of strain caused by the spherical product 01 during demolding can be reduced.

[0055] Reference Figure 6 When the product 01 is injection molded, in order to reduce the temperature in the first molding area 43, a mounting groove 233 is opened at the bottom of the second molding part 23 along the mold opening direction of the movable mold base 21, and a cooling pipe 234 is provided in the mounting groove 233, so that the cooling pipe 234 transfers the temperature to the first molding area 43 through the second molding part 23, so as to cool the product 01 in the first molding area 43.

[0056] Reference Figure 5 In order to make the second molded part 23 more stable, an installation cavity 242 is provided between the two connecting parts 241, and a fixing seat 243 is provided in the installation cavity 242. The fixing seat 243 is fixedly connected to the base 24, and one end of the second molded part 23 passes through the fixing seat 243 and is fixedly connected to the base 24, so that the second molded part 23 is fixed by the fixing seat 243.

[0057] Reference Figure 7 and Figure 8 In order to guide the sliding of the movable mold base 21 relative to the fixed mold base 11, a first guide column 222 and a guide sleeve 223 are also provided on the lower mold sleeve 22. The guide sleeve 223 and the first guide column 222 are both parallel to the mold opening direction of the movable mold base 21. The lower mold sleeve 22 is penetrated with a first guide hole 224 along the mold opening direction of the movable mold base 21. The guide sleeve 223 is located and fixedly connected in the first guide hole 224. One end of the first guide column 222 is located in the guide sleeve 223 and can slide in the guide sleeve 223, and the other end is penetrated and fixedly connected to the upper mold sleeve 12. A second guide column 225 is also provided between the lower mold sleeve 22 and the connecting member 241. The second guide column 225 is parallel to the first guide column 222. One end of the second guide column 225 is fixedly connected to the base 24, and the other end passes through the connecting member 241 and is inserted into the lower mold sleeve 22. The lower mold sleeve 22 can slide relative to the connecting member 241, and the injection molding equipment can be fixedly connected to the connecting member 241.

[0058] Reference Figure 9, when the moving mold base 21 slides along its mold opening direction away from the fixed mold base 11 to make the product 01 fall off, in order to facilitate the moving mold base 21 and the fixed mold base 11 to return to the buckled state from the separated state again, a reset assembly 6 is provided between the lower mold sleeve 21 and the fixed seat 243. The reset assembly 6 includes a third guiding column 61 and a second elastic member 62. The lower mold sleeve 22 is sequentially provided with a guiding groove 226 and a receiving groove 227 along the mold opening direction of the moving mold base 21. The inner diameter of the receiving groove 227 is larger than that of the guiding groove 226. The receiving groove 227 is located on the side of the guiding groove 226 close to the fixed seat 243. The third guiding column 61 is parallel to the first guiding column 222. One end of the third guiding column 61 is fixedly connected to the fixed seat 243, and the other end is sequentially inserted through the receiving groove 227 and the guiding groove, and the third guiding column 61 is in contact with the groove wall of the guiding groove 226. The second elastic member 62 is sleeved on the third guiding column 61. One end of the second elastic member 62 is fixedly connected to the fixed seat 243, and the other end is fixedly connected to the top wall of the receiving groove 227. The telescopic direction of the second elastic member 62 is parallel to the mold opening direction of the moving mold base 21. In this embodiment, the second elastic member 62 is a disc spring, and the second elastic member 62 has a force that drives the lower mold sleeve 22 to move toward the upper mold sleeve 12 side under the recoverable deformation.

[0059] Referring to Figure 10 and Figure 11 , in order to inject the raw material into the first forming area 43 to facilitate the forming of the product 01, the strong demolding mechanism further includes an injection member 7. The injection member 7 is hollow. The sealing plate 13 is provided with a first injection hole 71 for receiving the injection member 7 along the mold opening direction of the moving mold base 21. The fixed mold base 11 is provided with a second injection hole 112 along its own depth direction. One end of the injection member 7 is fixedly sleeved with a mounting seat 72. The mounting seat 72 is located on the hole wall of the first injection hole 71 and is detachably connected to the sealing plate 13. The other end passes through the second injection hole 112 and communicates with the first forming area 43 to introduce the raw material into the injection member 7 and further into the first forming area 43 for forming.

[0060] The implementation principle of a strong demolding mechanism according to an embodiment of the present application is as follows: Connect the lower mold sleeve 22 to the injection molding equipment, inject the raw material into the injection member 7, and further enter the first forming area 43 for forming. After the product 01 is formed, the injection molding equipment drives the lower mold sleeve 22 to slide along the mold opening direction of the moving mold base 21 away from the fixed mold base 11 to drive the moving mold base 21 to move. The second forming member 23 is separated from the sliding member 4. After the sliding member 4 loses the supporting force, under the action of the first elastic member 51, the sliding member 4 is driven to slide toward the moving mold base 21 side through the first guiding member 52, and further the formed product 01 is ejected from the first forming area 43 to complete the demolding of the formed product 01.

[0061] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A strong demolding mechanism, characterized in that: It includes a fixed mold assembly (1), a moving mold assembly (2) and a sliding assembly (5); The fixed mold assembly (1) includes a fixed mold base (11), the moving mold assembly (2) includes a moving mold base (21), the fixed mold base (11) and the moving mold base (21) are buckled with each other, the fixed mold base (11) is provided with a first cavity (111), the moving mold base (21) is provided with a second cavity (211), and the first cavity (111) is communicated with the second cavity (211); The moving mold assembly (2) is connected to an injection molding device, so that the injection molding device drives the moving mold assembly (2) to slide away from the fixed mold assembly (1), so that the moving mold base (21) and the fixed mold base (11) are in an open mold state; A first molding member (3) and a sliding member (4) are arranged in the first cavity (111). The first molding member (3) is provided with a first sliding cavity (31) along the opening direction of the moving mold base (21). The sliding member (4) is located in the first sliding cavity (31). A first molding area (43) is formed between the inner side wall of the first molding member (3) and the outer side wall of the sliding member (4). The sliding member (4) is slidably connected to the fixed mold base (11) along the opening direction of the moving mold base (21); The fixed mold assembly (1) further includes a sealing plate (13). The sealing plate (13) is arranged on the side of the fixed mold base (11) away from the moving mold base (21). The sealing plate (13) is directly or indirectly connected to the fixed mold base (11). A sliding groove (131) is formed on the side of the sealing plate (13) close to the fixed mold base (11); The sliding assembly (5) includes a first elastic member (51). The telescopic direction of the first elastic member (51) is parallel to the opening direction of the moving mold base (21). One end of the first elastic member (51) is fixedly connected to the top wall of the sliding groove (131), and the other end is directly or indirectly connected to the sliding member (4). The first elastic member (51) has a force to drive the sliding member (4) to move away from the sealing plate (13) under recoverable deformation.

2. The strong demolding mechanism according to claim 1, characterized in that: The sliding member (4) has an integrally connected sliding portion (41) and a molding portion (42). The molding portion (42) is located on the side of the sliding portion (41) close to the moving mold base (21). The inner diameter of the molding portion (42) is larger than the inner diameter of the sliding portion (41). The first sliding cavity (31) includes a communicated straight cavity (311) and an arc cavity (312). The outer peripheral wall of the sliding portion (41) is attached to the inner peripheral wall of the straight cavity (311), and the outer peripheral wall of the molding portion (42) and the inner peripheral wall of the arc cavity (312) form a first molding area (43).

3. The strong demolding mechanism according to claim 2, characterized in that: The fixed mold assembly (1) further includes an upper mold sleeve (12), and the movable mold assembly (2) further includes a lower mold sleeve (22). The upper mold sleeve (12) is provided with a first accommodation cavity (121) for accommodating the fixed mold base (11) along the mold opening direction of the movable mold base (21). The upper mold sleeve (12) is detachably connected to the fixed mold base (11), and the sealing plate (13) is detachably connected to the upper mold sleeve (12). The lower mold sleeve (22) is provided with a second accommodation cavity (221) for accommodating the movable mold base (21) along the mold opening direction of the movable mold base (21). The lower mold sleeve (22) is detachably connected to the movable mold base (21).

4. The strong demolding mechanism according to claim 1, characterized in that: The sliding assembly (5) further includes a first guiding member (52). The first guiding member (52) is fixedly connected between the first elastic member (51) and the sliding member (4), and the outer peripheral wall of the first guiding member (52) is in contact with the inner peripheral wall of the sliding groove (131).

5. A strong demolding mechanism according to claim 3, characterized in that: It further includes a second forming member (23) and a base (24). The base (24) is arranged on the side of the upper mold sleeve (12) away from the lower mold sleeve (22). There is a space between the base (24) and the lower mold sleeve (22). The base (24) is directly or indirectly connected to the lower mold sleeve (22). One end of the second forming member (23) is fixedly connected to the base (24), and the other end is connected with an undercut mold (231). The undercut mold (231) is located in the first sliding cavity (31) after passing through the second cavity (211). A second forming area (232) is formed between the undercut mold (231) and the forming portion (42). The second forming area (232) communicates with the first forming area (43). One end of the forming portion (42) of the sliding member (4) is in contact with the second forming member (23).

6. The strong demolding mechanism according to claim 5, characterized in that: The second forming member (23) is provided with an installation groove (521) along the mold opening direction of the movable mold base (21), and a cooling pipe (522) is arranged in the installation groove (521).

7. A strong demolding mechanism according to claim 1, characterized in that: It further includes an injection molding part (7). The sealing plate (13) is provided with a first injection hole (71) for accommodating the injection molding part (7) along the mold opening direction of the movable mold base (21). The fixed mold base (11) is provided with a second injection hole (112) along its own depth direction. One end of the injection molding part (7) is directly or indirectly connected to the inner wall of the first injection hole (71), and the other end communicates with the first forming area (43) after passing through the second injection hole (112).

8. A strong demolding mechanism according to claim 3, characterized in that: A first guiding post (222) and a guiding sleeve (223) are further provided on the lower die sleeve (22). The guiding sleeve (223) and the first guiding post (222) are both parallel to the mold opening direction of the moving die base (21). The lower die sleeve (22) is provided with a first guiding hole (224) penetrating along the mold opening direction of the moving die base (21). The guiding sleeve (223) is located in and fixedly connected to the first guiding hole (224). One end of the first guiding post (222) is located in the guiding sleeve (223) and can slide in the guiding sleeve (223), and the other end penetrates through and is fixedly connected to the upper die sleeve (12).

9. A strong demoulding mechanism according to claim 5, characterized in that: A connecting member (241) is provided between the lower die sleeve (22) and the base (24). Both ends of the base (24) are fixedly connected to one connecting member (241). An installation cavity (242) is formed between the two connecting members (241). The injection molding equipment is fixedly connected to the connecting member (241).

10. A strong demolding mechanism according to claim 9, characterized in that: It further includes a second guiding post (225). The second guiding post (225) is parallel to the mold opening direction of the moving die base (21). One end of the second guiding post (225) is fixedly connected to the base (24), and the other end passes through the connecting member (241) and is inserted into the lower die sleeve (22). The lower die sleeve (22) slides relative to the connecting member (241).

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