A composite slide mechanism for injection molds

Abstract

The utility model provides a kind of for injection mold's composite row position mechanism, this mechanism is by being provided with the clearance hole of avoiding of greater diameter than inclined guide pillar diameter on lower sliding block, it is convenient when mould opening, inclined guide pillar does not contact the inner wall of the side of lower die core away from clearance hole before, lower sliding block will not move towards the direction of the side of lower die core away, guarantee the smooth progress of reverse buckle demoulding;By being provided with lower forming block on the side of lower sliding block close to lower die core, the position of the side wall of the end of lower forming block away from lower sliding block close to upper mould assembly is provided with the first insertion slot of communicating with first moving groove in its inside, first inclined sliding slot is set in the end of lower moving block insertion first moving groove, one end of lower row position block is slidably fixed in first inclined sliding slot, the other end of lower row position block is inserted into first insertion slot, it is convenient when mould opening, by the movement of lower moving block towards the direction of the side of lower forming block away, make lower row position block move downwards along first inclined sliding slot and retract into first insertion slot, complete reverse buckle demoulding.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a composite sliding mechanism for injection molds. Background Technology

[0002] Molds are an indispensable tool in injection molding. Injection molding is a processing method in which hot, molten plastic material is injected at high speed into a closed cavity of the desired shape. After the plastic material cools and solidifies, the mold is opened and the solidified plastic product is ejected, thus obtaining the molded product. Because injection molding has the advantages of low molding cost, short molding cycle, simple molding process, and ease of molding complex shapes, it is widely used in the field of plastic product applications.

[0003] When injection-molded products have undercuts on their sidewalls, the product generally cannot be directly ejected from the mold. The undercut parts must be made movable, and after injection molding, these parts are then removed from the product – a process commonly known as core pulling. However, conventional sliders can generally only achieve horizontal core pulling. When the sidewalls of an injection-molded product have undercuts, the core pulling direction is no longer horizontal, making it difficult for conventional sliders to achieve undercut demolding. Utility Model Content

[0004] To address the problem in existing technologies where conventional sliders struggle to demold injection molded products with undercuts on their sidewalls, this invention provides a composite sliding mechanism for injection molds.

[0005] This utility model discloses a composite sliding mechanism for injection molds, comprising an upper mold assembly and a lower mold assembly. The upper mold assembly includes an upper template, an upper mold core, a slanted guide post, and a drive block. The upper mold core is fixed to the upper template, and the slanted guide post is fixed to the upper template at a position on one side of the upper mold core. An upper groove is provided on the upper template between the upper mold core and the slanted guide post, and the upper groove includes an upper inclined surface. The drive block is fixed to the upper inclined surface. The lower mold assembly includes a lower template, a lower mold core, a lower slider, a lower forming block, a lower moving block, and a lower sliding block. The lower mold core is fixed to the lower template at a position corresponding to the upper mold core. The lower slider is slidably disposed on the lower template and cooperates with the upper groove. The lower slider has a clearance angled hole, and the lower end of the slanted guide post is inserted into the clearance angled hole. The diameter of the clearance angled hole is larger than the diameter of the slanted guide post. The molding block is set on the side of the lower slider near the lower mold core. The lower molding block fits with the upper mold core and the lower mold core. The lower molding block has a first moving groove inside. The lower slider has a second moving groove at the position corresponding to the first moving groove. The second moving groove and the first moving groove are connected. One end of the lower moving block is inserted into the first moving groove through the second moving groove and fits against the first moving groove. The side wall of the lower molding block away from the lower slider has a first slot near the upper mold assembly. The first slot is connected to the first moving groove. The end of the lower moving block inserted into the first moving groove has a first inclined sliding groove. One end of the lower moving block is slidably fixed in the first inclined sliding groove. The other end of the lower moving block is inserted into the first slot. The end of the lower moving block away from the first moving groove has a second inclined sliding groove. The drive block is slidably engaged with the second inclined sliding groove.

[0006] Preferably, the upper inclined surface is set parallel to the central axis of the inclined guide post.

[0007] Preferably, the cross-sectional area of ​​the end of the lower moving block away from the lower forming block is greater than the maximum cross-sectional area of ​​the first moving groove.

[0008] Preferably, the lower mold assembly further includes an elastic element. The surface of the lower slide block away from the upper mold assembly is provided with a first through hole, which communicates with the second moving groove. The elastic element is disposed in the first through hole. The side wall of the lower moving block is provided with a first limiting hole away from the upper mold assembly, and the elastic element cooperates with the first limiting hole.

[0009] Furthermore, the horizontal distance from the end of the lower moving block near the lower slider to the end of the lower moving block away from the lower slider is greater than the horizontal distance from the central axis of the first limiting hole to the central axis of the elastic element.

[0010] Preferably, the upper mold assembly also includes a delay block, which is fixed on the surface of the upper mold plate near the lower mold assembly at a position on the side of the inclined guide post. A block receiving groove is provided on the lower slide block at a position corresponding to the delay block, and the delay block is inserted into the block receiving groove and fits against the block receiving groove.

[0011] Furthermore, the side of the delay block near the lower forming block includes a first contact surface and a second contact surface. The first contact surface is located above the second contact surface and is connected to the second contact surface. The first contact surface is vertically arranged, and the second contact surface is parallel to the upper inclined surface. A wear-resistant block is provided on the side of the lower slider near the upper inclined surface at a position outside the second moving groove and not corresponding to the block receiving groove. The side of the wear-resistant block away from the lower slider is parallel to the upper inclined surface.

[0012] Preferably, in the mold-closed state, the end face of the lower moving block away from the lower slide block is coplanar with the end face of the lower forming block away from the lower slide block.

[0013] Preferably, the extension direction of the second inclined groove is parallel to the upper inclined surface.

[0014] Compared with the prior art, the composite sliding mechanism for injection molds of this utility model provides a delay effect by setting a clearance hole on the lower slide block with a diameter larger than that of the inclined guide post. This ensures that the lower slide block will not move away from the lower mold core before the inclined guide post contacts the inner wall of the clearance hole on the side away from the lower mold core during mold opening, thus ensuring smooth undercut demolding. Furthermore, a lower forming block is set on the side of the lower slide block near the lower mold core. A first slot communicating with the first moving groove inside the lower forming block is set on the side wall of the lower forming block away from the lower slide block near the upper mold assembly. A first inclined sliding groove is set at the end of the lower moving block that is inserted into the first moving groove. One end of the lower moving block is slidably fixed in the first inclined sliding groove, and the other end of the lower moving block is inserted into the first slot. This facilitates the movement of the lower moving block away from the lower forming block during mold opening, causing the lower moving block to move downward along the first inclined sliding groove and retract into the first slot, completing the undercut demolding and ensuring the quality of injection molded products with undercut sidewalls. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of a composite sliding mechanism for injection molds according to an embodiment of the present invention.

[0017] Figure 2 for Figure 1 A magnified structural diagram of point A in the middle.

[0018] Figure 3 for Figure 1 A magnified structural diagram at point B in the middle.

[0019] Figure 4 This is a schematic diagram of the semi-open state structure of a composite sliding mechanism for injection molds according to an embodiment of the present invention. Detailed Implementation

[0020] To provide a better understanding of the purpose, structure, features, and functions of this utility model, detailed descriptions are provided below with reference to specific embodiments.

[0021] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 limitations on this utility model.

[0022] Please see Figure 1 and Figure 4 The present invention provides a composite sliding mechanism for injection molds, comprising an upper mold assembly 10 and a lower mold assembly 20.

[0023] The upper mold assembly 10 includes an upper template 11, an upper mold core 12, an inclined guide post 13, and a drive block 14. The upper mold core 12 is fixed on the upper template 11, and the inclined guide post 13 is fixed on the upper template 11 at a position on one side of the upper mold core 12. An upper groove 111 is provided on the upper template 11 at a position between the upper mold core 12 and the inclined guide post 13. The upper groove 111 includes an upper inclined surface 1111, and the drive block 14 is vertically fixed on the upper inclined surface 1111.

[0024] The lower mold assembly 20 includes a lower template 21, a lower mold core 22, a lower slider 23, a lower forming block 24, a lower moving block 25, and a lower moving position block 26.

[0025] The lower mold core 22 is fixed on the lower template 21 at the position corresponding to the upper mold core 12.

[0026] The lower slider 23 is slidably mounted on the lower template 21. The lower slider 23 cooperates with the upper groove 111 so that the upper mold assembly 10 and the lower mold assembly 20 fit more tightly when the mold is closed. The lower slider 23 is provided with a clearance oblique hole 231. The lower end of the oblique guide post 13 is inserted into the clearance oblique hole 231. The diameter of the clearance oblique hole 231 is larger than the diameter of the oblique guide post 13. So that when the mold is opened, before the oblique guide post 13 contacts the inner wall of the clearance oblique hole 231 on the side away from the lower mold core 22, the lower slider 23 will not move in the direction away from the lower mold core 22, thereby ensuring the smooth demolding of the undercut.

[0027] In actual use, a lower groove is provided on the lower template 21 at the position corresponding to the clearance inclined hole 231, and the lower end of the inclined guide post 13 passes through the clearance inclined hole 231 and is inserted into the lower groove.

[0028] The lower forming block 24 is disposed on the side of the lower slider 23 near the lower mold core 22. The lower forming block 24 fits with the upper mold core 12 and the lower mold core 22 so that when the mold is closed, the upper mold core 12, the lower mold core 22, and the lower forming block 24 together form a forming cavity.

[0029] The lower forming block 24 has a first moving groove 241 inside, and the lower sliding block 23 has a second moving groove 232 at a position corresponding to the first moving groove 241. The second moving groove 232 is connected to the first moving groove 241. One end of the lower moving block 25 is inserted into the first moving groove 241 through the second moving groove 232 and fits against the first moving groove 241.

[0030] A first slot 242 is provided on the side wall of the lower molding block 24 away from the lower slider 23, near the upper mold assembly 10. The first slot 242 is connected to the first moving groove 241. The lower moving block 25 is inserted into the first moving groove 241 at one end, and a first inclined sliding groove 251 is provided at the other end. One end of the lower moving block 26 is slidably fixed in the first inclined sliding groove 251, and the other end of the lower moving block 26 is inserted into the first slot 242. During mold closing and injection molding, the lower moving block 25 moves towards the lower molding block 24, causing the lower moving block 26 to move upward along the first inclined sliding groove 251 and extend out of the first slot 242, forming the undercut structure on the product. During mold opening, the lower moving block 25 moves away from the lower molding block 24, causing the lower moving block 26 to move downward along the first inclined sliding groove 251 and retract back into the first slot 242, completing the undercut demolding.

[0031] The lower moving block 25 is provided with a second inclined slide groove 252 at one end away from the first moving groove 241. The driving block 14 is slidably engaged with the second inclined slide groove 252 so that when the mold is closed, the driving block 14 moves downward along the second inclined slide groove 252 to drive the lower moving block 25 to move toward the direction closer to the lower forming block 24, thereby driving the lower position block 26 to move upward along the first inclined slide groove 251 and extend out of the first slot 242. When the mold is opened, the driving block 14 moves upward along the second inclined slide groove 252 to drive the lower moving block 25 to move away from the lower forming block 24, thereby driving the lower position block 26 to move downward along the first inclined slide groove 251 and retract into the first slot 242, thus completing the undercut demolding.

[0032] In a preferred embodiment, the upper inclined surface 1111 is arranged parallel to the central axis of the inclined guide post 13 to facilitate the smooth operation of the mold closing and opening process.

[0033] In a preferred embodiment, the extension direction of the second inclined slide 252 is parallel to the upper inclined surface 1111, so that the drive block 14 can move along the second inclined slide 252 during the mold opening and closing process.

[0034] Working process: In the mold-closed state, the upper end of the downward sliding block 26 extends out of the first slot 242, forming a molding cavity together with the upper mold core 12, the lower mold core 22, and the lower molding block 24. The lower sliding block 23 fits against the upper groove 111, and the inclined guide post 13 does not contact the inner wall of the clearance oblique hole 231 away from the lower molding block 24. When the mold opens, the upper mold plate 11 moves upward, driving the inclined guide post 13 and the drive block 14 to move upward. The drive block 14 moves upward along the second inclined slide groove 252, driving the lower moving block 25. The lower molded block 24 moves away from the lower molded block 24, thereby causing the lower molded block 26 to move downward along the first inclined slide groove 251 and retract into the first slot 242, completing the undercut demolding. After that, the inclined guide post 13 contacts the inner wall of the clearance inclined hole 231 on the side away from the lower mold core 22. As the upper mold plate 11 drives the inclined guide post 13 to continue to move upward, the inclined guide post 13 drives the lower slide block 23 to move away from the lower mold core 22. The lower slide block 23 drives the lower molded block 24 to move and detach from the injection molded product 100.

[0035] In actual use, the horizontal distance that the lower slider 23 moves away from the lower mold core 22 under the action of the inclined guide post 13 is not less than the maximum length of the contact part between the injection molded product 100 and the lower molding block 24 in the horizontal direction, so as to ensure that the injection molded product 100 can be completely demolded.

[0036] The composite sliding mechanism for injection molds in this embodiment features a clearance hole 231 on the lower slide block 23, with a diameter larger than that of the inclined guide post 13. This ensures that during mold opening, the lower slide block 23 will not move away from the lower mold core 22 until the inclined guide post 13 contacts the inner wall of the clearance hole 231. This delays the movement and ensures smooth demolding. Furthermore, a lower forming block 24 is provided on the side of the lower slide block 23 near the lower mold core 22. The lower forming block 24 has a clearance hole 231 on its side wall near the upper mold assembly 10. A first slot 242 is placed in communication with the first moving groove 241 inside it. A first inclined slide groove 251 is provided at one end of the lower moving block 25 inserted into the first moving groove 241. One end of the lower position block 26 is slidably fixed in the first inclined slide groove 251, and the other end of the lower position block 26 is inserted into the first slot 242. This makes it convenient for the lower position block 26 to move down along the first inclined slide groove 251 and retract into the first slot 242 when the mold is opened, by moving the lower moving block 25 away from the lower forming block 24. This completes the undercut demolding and ensures the quality of the injection molded product with undercuts on the side wall.

[0037] In order to limit the length of the lower moving block 25 inserted into the first moving slot 241, the cross-sectional area of ​​the end of the lower moving block 25 away from the lower forming block 24 is greater than the maximum cross-sectional area of ​​the first moving slot 241.

[0038] Please refer to the above. Figure 1 and Figure 2 To enable the lower slider 23 to move simultaneously with the lower moving block 25 after demolding, the lower mold assembly 20 also includes an elastic element 27. The surface of the lower slider 23 away from the upper mold assembly 10 is provided with a first through hole 233, which communicates with the second moving groove 232. The elastic element 27 is disposed in the first through hole 233. The side wall of the lower moving block 25 is provided with a first limiting hole 253 away from the upper mold assembly 10. The elastic element 27 cooperates with the first limiting hole 253 so that when the lower moving block 25 moves away from the lower forming block 24, the first limiting hole 253 and the first through hole 233 are aligned, and the elastic element 27 is inserted upward into the first limiting hole 253, combining the lower slider 23 and the lower moving block 25 together. When the lower moving block 25 moves towards the lower forming block 24 under the drive of the drive block 14, the elastic element 27 can retract into the first through hole 233, separating the lower slider 23 and the lower moving block 25.

[0039] In order to prevent the lower moving block 26 from disengaging from the lower moving block 25 when the lower moving block 25 moves in a direction away from the lower forming block 24, the horizontal distance from the end of the lower moving block 26 near the lower slider 23 to the end of the lower moving block 25 away from the lower slider 23 is greater than the horizontal distance from the central axis of the first limiting hole 253 to the central axis of the elastic member 27.

[0040] In practical use, the elastic element 27 can be a ball screw; when there is an elastic element 27 and a first limiting hole 253 that cooperates with it, the lower molding block 24 can be not fixedly connected to the lower slider 23. The lower molding block 24 and the lower moving block 25 are combined together by the lower positioning block 26, and the lower moving block 25 and the lower slider 23 are combined together by the elastic element 27. Thus, the lower slider 23, the lower molding block 24 and the lower moving block 25 are combined together. Under the drive of the inclined guide post 13, the three move outward together and detach from the injection molded product 100.

[0041] Please refer to the above. Figure 1 and Figure 3To ensure that the lower slider 23 does not shift during the undercut demolding process, the upper mold assembly 10 also includes a delay block 15. The delay block 15 is fixed on the surface of the upper mold plate 11 near the lower mold assembly 20, located on the side of the inclined guide post 13, to avoid interference between the delay block 15 and the inclined guide post 13. The lower slider 23 is provided with a block receiving groove 234 at the position corresponding to the delay block 15. The delay block 15 is inserted into the block receiving groove 234 and fits against the block receiving groove 234. During the mold opening process, when the delay block 15 completely disengages from the block receiving groove 234, the inclined guide post 13 contacts the inner wall of the clearance inclined hole 231 on the side away from the lower mold core 22, driving the lower slider 23 to move outward.

[0042] Furthermore, the side of the delay block 15 near the lower forming block 24 includes a first contact surface 151 and a second contact surface 152. The first contact surface 151 is located above the second contact surface 152 and is connected to the second contact surface 152. The first contact surface 151 is vertically arranged, and the second contact surface 152 is parallel to the upper inclined surface 1111. This is to avoid interference with the movement of the lower slider 23 due to the large vertical height of the delay block 15 when the delay stroke is short. In this case, only the part of the delay block 15 corresponding to the first contact surface 151 actually plays a delaying role. The term "vertical" here refers to being parallel to the moving direction of the upper template 11.

[0043] To improve service life, a wear-resistant block 28 is provided on the side of the lower slider 23 near the upper inclined surface 1111, located outside the second moving groove 232 and not corresponding to the stop block receiving groove 234, to avoid interference with the movement of the lower moving block 25 and the delay stop block 15. The side of the wear-resistant block 28 away from the lower slider 23 is parallel to the upper inclined surface 1111, so that the upper mold assembly 10 and the lower mold assembly 20 fit more tightly when the mold is closed.

[0044] To ensure the stability of the molding cavity, in the mold-closed state, the end face of the lower moving block 25 away from the lower slide block 23 is coplanar with the end face of the lower molding block 24 away from the lower slide block 23.

[0045] Mold opening process: Please refer to Figure 4When the mold opens, the upper mold plate 11 moves upward, causing the inclined guide post 13, the drive block 14, and the delay stop 15 to move upward. The drive block 14 moves upward along the second inclined slide groove 252, driving the lower moving block 25 to move away from the lower forming block 24, thereby driving the lower positioning block 26 to move downward along the first inclined slide groove 251 and retract into the first slot 242, completing the undercut demolding. Afterward, the drive block 14 continues to move upward along the second inclined slide groove 252, driving the lower moving block 25 to move away from the lower forming block 24. When the first limiting hole 253 corresponds to the first through hole 233, the elastic element 27 is inserted upward. Inside the first limiting hole 253, the lower slider 23 and the lower moving block 25 are combined together. At the same time or afterward, the inclined guide post 13 contacts the inner wall of the clearance inclined hole 231 on the side away from the lower mold core 22, and the delay block 15 has completely left the block receiving groove 234. Afterward, as the upper template 11 drives the inclined guide post 13 to continue to move upward, the inclined guide post 13 drives the lower slider 23 to move in the direction away from the lower mold core 22. The lower slider 23 drives the lower forming block 24 to move and detach from the injection molded product 100. When the lower slider 23 moves to the farthest distance from the lower mold core 22, the injection molded product 100 has completely detached from the lower forming block 24.

[0046] This invention discloses a composite sliding mechanism for injection molds. By providing a clearance hole on the lower slide block with a diameter larger than that of the inclined guide post, the lower slide block will not move away from the lower mold core before the inclined guide post contacts the inner wall of the clearance hole during mold opening, achieving a delay effect and ensuring smooth undercut demolding. Furthermore, a lower forming block is provided on the side of the lower slide block near the lower mold core. A first slot, communicating with a first moving groove inside the lower forming block, is provided on the side wall of the lower forming block away from the lower slide block, near the upper mold assembly. A first inclined sliding groove is provided at the end of the lower moving block inserted into the first moving groove. One end of the lower moving block is slidably fixed in the first inclined sliding groove, and the other end of the lower moving block is inserted into the first slot. This facilitates the movement of the lower moving block away from the lower forming block during mold opening, causing the lower moving block to move downwards along the first inclined sliding groove and retract into the first slot, completing the undercut demolding and ensuring the quality of injection molded products with undercut sidewalls.

[0047] This utility model has been described by the above-described embodiments; however, these embodiments are merely examples for implementing this utility model. Furthermore, the technical features involved in the different embodiments of this utility model described above can be combined with each other as long as they do not conflict with each other. It must be pointed out that the disclosed embodiments do not limit the scope of this utility model. On the contrary, any modifications and refinements made without departing from the spirit and scope of this utility model are within the patent protection scope of this utility model.

Claims

1. A composite sliding mechanism for injection molds, characterized in that, Includes upper mold assembly and lower mold assembly. The upper mold assembly includes an upper template, an upper mold core, an inclined guide post, and a drive block. The upper mold core is fixed on the upper template, and the inclined guide post is fixed on the upper template at a position on one side of the upper mold core. An upper groove is provided on the upper template at a position between the upper mold core and the inclined guide post. The upper groove includes an upper inclined surface, and the drive block is fixed on the upper inclined surface. The lower mold assembly includes a lower template, a lower mold core, a lower slide block, a lower forming block, a lower moving block, and a lower positioning block. The lower mold core is fixed on the lower template at a position corresponding to the upper mold core. The lower slide block is slidably disposed on the lower template and cooperates with the upper groove. The lower slide block has a clearance oblique hole, and the lower end of the oblique guide post is inserted into the clearance oblique hole. The diameter of the clearance oblique hole is larger than the diameter of the oblique guide post. The lower forming block is disposed on the side of the lower slide block near the lower mold core. The lower forming block fits with the upper mold core and the lower mold core. The lower forming block has a first moving groove inside, and the lower slide block has a corresponding position on the lower mold core. The device has a second moving groove that communicates with the first moving groove. One end of the lower moving block is inserted into the first moving groove via the second moving groove and fits against the first moving groove. A first slot is provided on the side wall of the lower forming block away from the lower sliding block, near the upper mold assembly. The first slot communicates with the first moving groove. A first inclined sliding groove is provided at the end of the lower moving block that is inserted into the first moving groove. One end of the lower moving block is slidably fixed in the first inclined sliding groove. The other end of the lower moving block is inserted into the first slot. A second inclined sliding groove is provided at the end of the lower moving block away from the first moving groove. The driving block is slidably engaged with the second inclined sliding groove.

2. The composite sliding mechanism for injection molds as described in claim 1, characterized in that, The upper inclined surface is arranged parallel to the central axis of the inclined guide post.

3. The composite sliding mechanism for injection molds as described in claim 1, characterized in that, The cross-sectional area of ​​the end of the lower moving block away from the lower forming block is greater than the maximum cross-sectional area of ​​the first moving groove.

4. A composite sliding mechanism for injection molds as described in claim 1, characterized in that, The lower mold assembly further includes an elastic element. The surface of the lower sliding block away from the upper mold assembly is provided with a first through hole. The first through hole communicates with the second moving groove. The elastic element is disposed in the first through hole. The side wall of the lower moving block is provided with a first limiting hole away from the upper mold assembly. The elastic element cooperates with the first limiting hole.

5. A composite sliding mechanism for injection molds as described in claim 4, characterized in that, The horizontal distance from the end of the downward moving block near the lower slider to the end of the downward moving block away from the lower slider is greater than the horizontal distance from the central axis of the first limiting hole to the central axis of the elastic element.

6. A composite sliding mechanism for injection molds as described in claim 1, characterized in that, The upper mold assembly also includes a delay block, which is fixed on the surface of the upper mold plate near the lower mold assembly at a position on one side of the inclined guide post. The lower slide block is provided with a block receiving groove at a position corresponding to the delay block, and the delay block is inserted into the block receiving groove and fits against the block receiving groove.

7. A composite sliding mechanism for injection molds as described in claim 6, characterized in that, The side of the delay block near the lower forming block includes a first contact surface and a second contact surface. The first contact surface is located above the second contact surface and is connected to the second contact surface. The first contact surface is vertically arranged, and the second contact surface is parallel to the upper inclined surface.

8. A composite sliding mechanism for injection molds as described in claim 6, characterized in that, A wear-resistant block is provided on the side of the lower slider near the upper inclined surface, located outside the second moving groove and not corresponding to the stop block receiving groove. The side of the wear-resistant block away from the lower slider is parallel to the upper inclined surface.

9. A composite sliding mechanism for injection molds as described in claim 1, characterized in that, In the mold-closed state, the end face of the lower moving block away from the lower sliding block is coplanar with the end face of the lower forming block away from the lower sliding block.

10. A composite sliding mechanism for injection molds as described in claim 1, characterized in that, The second inclined groove extends in a direction parallel to the upper inclined surface.

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