Lock forming die

Abstract

The utility model relates to a lock head forming die. The injection mold comprises a needle drawing assembly, a lower mold plate, an upper mold plate covering the lower mold plate, a lower mold core arranged in the lower mold plate, an upper mold core arranged in the upper mold plate, a first sliding insert and a second sliding insert, wherein the first sliding insert and the second sliding insert are respectively connected with the lower mold core and the lower mold plate in a sliding manner; the mold cavity is defined by the inner side walls of the upper mold core and the lower mold core, the needle drawing assembly comprises a needle drawing movable block and a needle drawing body, the needle drawing movable block is arranged in the upper mold plate in a sliding mode, one end of the needle drawing body is connected with the needle drawing movable block, and the other end of the needle drawing body can penetrate through the mold cavity. The lock head is convenient to take out, and during mold opening, the drawing needle body, the first sliding insert and the second sliding insert are respectively far away from the lock head, so that mold taking of the lock head is facilitated. The through hole penetrating through the lock head is formed in the lock head through the drawing needle body, subsequent installation of the lock head and a pull piece is facilitated, integrated forming of the lock head is facilitated, and production of the lock head is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of zipper head production, in particular to a lock head forming mold. Background Art

[0002] The use of zippers is very wide. Zippers are composed of zipper tapes and zipper heads that can be repeatedly opened and closed. The zipper heads are used to open or close the zipper. The existing zipper heads are composed of a lock and a pull tab that is movably connected to the lock. In the patent application number CN202321978173.1, the patent application name is a patent for an elephant trunk perforated zipper head mold. After the elephant trunk of the molded lock and the pull tab are installed in this patent application, the pull tab is easy to fall off the lock. The connection between the lock and the pull tab is unstable, which affects the quality of the zipper. Therefore, the defects are very obvious, and a solution is urgently needed. Utility Model Content

[0003] In order to solve the above technical problems, the purpose of the utility model is to provide a lock forming mold.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A lock forming mold, which includes a needle extraction assembly, a lower template, an upper template covered on the lower template, a lower mold core arranged in the lower template, an upper mold core arranged in the upper template, a first sliding insert and a second sliding insert respectively connected to the lower mold core and the lower template in a sliding manner, and a mold cavity surrounded by the inner side walls of the first sliding insert, the second sliding insert, the upper mold core and the lower mold core, the needle extraction assembly includes a needle extraction movable block slidably arranged in the upper template and a needle extraction body at one end connected to the needle extraction movable block, and the other end of the needle extraction body can pass through the mold cavity.

[0006] Furthermore, the lock forming mold also includes a hollowed-out groove arranged on the upper template.

[0007] Furthermore, the lock forming mold also includes a movable groove arranged on the upper mold plate and a baffle arranged at the opening of the movable groove, and the needle-extracting movable block is slidably connected to the inner wall of the movable groove.

[0008] Furthermore, the lock forming mold also includes a mounting hole provided on the needle-extracting movable block and a protrusion formed by being recessed outward from the inner wall of the mounting hole.

[0009] Furthermore, an annular protrusion is provided on the needle withdrawal body, and an installation groove is provided on the needle withdrawal movable block. The lock forming mold also includes a connecting plate that can be detachably connected to the needle withdrawal movable block. The connecting plate is pressed on the needle withdrawal movable block and one end of the needle withdrawal body close to the annular protrusion, and can interfere with the annular protrusion.

[0010] Furthermore, the lock forming mold also includes a first slider connected to the first sliding insert, a second slider connected to the second sliding insert, a first sliding hole set through the first slider, a second sliding hole set through the second slider, and a first guide rod and a second guide rod respectively arranged on the upper template; the first guide rod is inserted into the first sliding hole and is slidably connected to the hole wall of the first sliding hole, and the second guide rod is inserted into the second sliding hole and is slidably connected to the hole wall of the second sliding hole; the first guide rod and the second guide rod are arranged opposite to each other, and the bottom ends of the first guide rod and the second guide rod are inclined in a direction away from each other.

[0011] Furthermore, the lock forming mold also includes a mold nose inlay inserted in the upper mold core and a through hole arranged on the mold nose inlay, the mold nose inlay protrudes into the mold cavity, and the extraction pin body passes through the through hole.

[0012] The beneficial effects of the utility model: the lock of the utility model is easy to take out. When the mold is opened, the pin extraction body, the first sliding insert and the second sliding insert are respectively away from the lock, which is convenient for removing the mold of the lock. A through hole penetrating the lock is formed on the lock by the pin extraction body, which is convenient for the subsequent installation of the lock and the pull tab, and is conducive to the integrated molding of the lock, and the production of the lock is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a full cross-sectional view of the utility model.

[0014] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model in the mold opening state.

[0015] Figure 3 The three-dimensional structure of the utility model in the mold closing state is shown in FIG. Figure 1 .

[0016] Figure 4 The three-dimensional structure of the utility model in the mold closing state is shown in FIG. Figure 2 .

[0017] Figure 5 It is a schematic diagram of the three-dimensional structure of the mold nose inlay of the utility model.

[0018] Figure 6 It is a schematic diagram of the three-dimensional structure of the lock.

[0019] Description of reference numerals:

[0020] 1. Upper template; 2. Lower template; 3. Upper mold core; 4. Lower mold core; 5. First sliding insert; 6. Second sliding insert; 7. Mold cavity; 8. Needle extraction assembly; 9. Needle extraction body; 10. Needle extraction movable block; 11. Movable groove; 12. Baffle; 13. Mounting hole; 14. Bump; 15. Annular protrusion; 16. Mounting groove; 17. Connecting plate; 18. Mold nose insert; 19. Through hole; 20. Hollow groove; 21. First slider; 22. Second slider; 23. First sliding hole; 24. Second sliding hole; 25. First guide rod; 26. Second guide rod. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0022] like Figures 1 to 6 As shown, the utility model provides a lock forming mold, which includes a needle extraction assembly 8, a lower template 2, an upper template 1 covered on the lower template 2, a lower mold core 4 arranged in the lower template 2, an upper mold core 3 arranged in the upper template 1, a first sliding insert 5 and a second sliding insert 6 respectively connected to the lower mold core 4 and the lower template 2 in a sliding manner, and a mold cavity 7 surrounded by the inner side walls of the first sliding insert 5, the second sliding insert 6, the upper mold core 3 and the lower mold core 4, the needle extraction assembly 8 includes a needle extraction movable block 10 slidably arranged in the upper template 1 and a needle extraction body 9 connected to the needle extraction movable block 10 at one end, and the other end of the needle extraction body 9 can pass through the mold cavity 7.

[0023] Specifically, the mold cavity 7 is used to mold the lock. In actual use, the mold cavity 7 is injected with molten rubber by an injection molding machine, and the molten rubber is cooled and molded into a lock in the mold cavity 7, and the pin extraction body 9 penetrates the molded lock. When the mold is opened, the pin extraction movable block 10 is driven to slide relative to the upper mold plate 1, and the pin extraction body 9 is driven to move out of the mold cavity 7 by the pin extraction movable block 10, and then the upper mold plate 1 and the lower mold plate 2 are separated, and the first sliding insert 5 and the second sliding insert 6 are driven to slide relative to the lower mold plate 2 and the lower mold core 4 respectively, and the first sliding insert 5 and the second sliding insert 6 slide in a direction away from each other, so as to facilitate the removal of the molded lock. The lock of the utility model is easy to remove. When the mold is opened, the pin extraction body 9, the first sliding insert 5 and the second sliding insert 6 are respectively away from the lock, which is convenient for the removal of the lock. A through hole that penetrates the lock is formed on the trunk of the lock by the pin extraction body 9, which is convenient for the subsequent installation of the lock and the pull tab, and is conducive to the integrated molding of the lock, and the production of the lock is convenient.

[0024] Furthermore, the lock forming mold further includes a hollowed-out groove 20 disposed on the upper template 1. The hollowed-out groove 20 is added to make the upper template 1 lighter and reduce the work required to drive the upper template 1 to open the mold.

[0025] Furthermore, the lock forming mold further comprises a movable groove 11 arranged on the upper mold plate 1 and a baffle 12 arranged at the opening of the movable groove 11 , and the needle-extracting movable block 10 is slidably connected to the inner wall of the movable groove 11 .

[0026] Specifically, the lock molding die also includes a mounting hole 13 provided on the needle extraction movable block 10 and a convex block 14 formed by the inner wall of the mounting hole 13 being concave outward. The lock molding die also includes a T-shaped connecting rod connected to the needle extraction movable block 10. In actual use, the T-shaped head of the T-shaped connecting rod is placed in the mounting hole 13, the convex block 14 conflicts with the T-shaped head of the T-shaped connecting rod, and then the needle extraction movable block 10 is connected to the needle extraction body 9 and then placed in the movable groove 11, and finally the baffle 12 is installed, and the T-shaped connecting rod can protrude outside the baffle 12, so that the external driving structure is connected to the T-shaped connecting rod. When the needle extraction body 9 needs to be extracted, the T-shaped connecting rod and the needle extraction body 9 are driven to be extracted in the direction close to the baffle 12 by the external driving structure. The installation of the needle extraction assembly 8 is convenient, and the movement of the needle extraction body 9 is convenient. The movement process of the needle extraction movable block 10 is stable. The protrusion 14 is added so that the T-shaped connecting rod and the needle-drawing movable block 10 can be quickly installed and limited without an extra locking structure, thus simplifying the structure of the utility model.

[0027] Furthermore, an annular protrusion 15 is provided on the needle withdrawal body 9, and a mounting groove 16 is provided on the needle withdrawal movable block 10. The lock forming mold also includes a connecting plate 17 that can be detachably connected to the needle withdrawal movable block 10. The connecting plate 17 is pressed on the needle withdrawal movable block 10 and one end of the needle withdrawal body 9 close to the annular protrusion 15, and can interfere with the annular protrusion 15.

[0028] During the actual use and installation process, the annular protrusion 15 is placed in the installation groove 16, and then the connecting plate 17 is placed on the needle extraction movable block 10, and the needle extraction movable block 10 and the connecting plate 17 are fixedly connected by a locking piece (screw or screw), thereby completing the quick connection between the needle extraction body 9 and the needle extraction movable block 10. The connection between the needle extraction body 9 and the needle extraction movable block 10 is stable and convenient.

[0029] Furthermore, the lock forming mold also includes a first slider 21 connected to the first sliding insert 5, a second slider 22 connected to the second sliding insert 6, a first sliding hole 23 set through the first slider 21, a second sliding hole 24 set through the second slider 22, and a first guide rod 25 and a second guide rod 26 respectively arranged on the upper template 1; the first guide rod 25 is inserted into the first sliding hole 23 and is slidably connected to the hole wall of the first sliding hole 23, and the second guide rod 26 is inserted into the second sliding hole 24 and is slidably connected to the hole wall of the second sliding hole 24; the first guide rod 25 and the second guide rod 26 are arranged opposite to each other, and the bottom ends of the first guide rod 25 and the second guide rod 26 are inclined in a direction away from each other.

[0030] Specifically, the side projection of the first guide rod 25 and the second guide rod 26 is intended to be in an eight-shaped shape. In actual use, the first guide rod 25 and the second guide rod 26 are simultaneously driven to move upward during the upward opening of the upper mold plate 1. The first guide rod 25 and the second guide rod 26 slide upward in the first sliding hole 23 and the second sliding hole 24 respectively, thereby reversely pushing the first slider 21, the second slider 22, the first sliding insert 5 and the second sliding insert 6 to move in the lower mold core 4 in the opposite direction, thereby achieving rapid demoulding, reducing the power source required for demoulding, and saving production costs.

[0031] Furthermore, the lock forming mold also includes a mold nose inlay 18 inserted in the upper mold core 3 and a through hole 19 arranged on the mold nose inlay 18, the mold nose inlay 18 protrudes into the mold cavity 7, and the extraction needle body 9 is arranged through the through hole 19.

[0032] In actual use, the nose insert 18 is added to form a groove for accommodating the nose insert 18 on the trunk of the lock, so that the pull tab can be extended into the groove and connected to the lock, making the pull tab and the lock more stable after installation.

[0033] All technical features in this embodiment can be freely combined according to actual needs.

[0034] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. A lock forming mold, characterized in that: The invention comprises a needle extraction assembly (8), a lower template (2), an upper template (1) covering the lower template (2), a lower mold core (4) arranged in the lower template (2), an upper mold core (3) arranged in the upper template (1), a first sliding insert (5) and a second sliding insert (6) respectively connected to the lower mold core (4) and the lower template (2) in a sliding manner, and a mold cavity (7) surrounded by the inner side walls of the first sliding insert (5), the second sliding insert (6), the upper mold core (3) and the lower mold core (4), wherein the needle extraction assembly (8) comprises a needle extraction movable block (10) slidably arranged in the upper template (1) and a needle extraction body (9) one end of which is connected to the needle extraction movable block (10), and the other end of the needle extraction body (9) can penetrate the mold cavity (7).

2. The lock forming mold according to claim 1, characterized in that: The lock head forming die also includes a hollowed-out groove (20) arranged on the upper die plate (1).

3. The lock forming mold according to claim 1, characterized in that: The lock head forming mold further comprises a movable groove (11) arranged on the upper mold plate (1) and a baffle (12) arranged at the opening of the movable groove (11), and the needle-extracting movable block (10) is slidably connected to the inner wall of the movable groove (11).

4. The lock forming mold according to claim 3, characterized in that: The lock head forming mold further comprises a mounting hole (13) provided on the needle-pulling movable block (10) and a convex block (14) formed by being concavely arranged outwardly from the inner wall of the mounting hole (13).

5. The lock forming mold according to claim 4, characterized in that: The needle extraction body (9) is provided with an annular protrusion (15), the needle extraction movable block (10) is provided with a mounting groove (16), and the lock head forming mold further comprises a connecting plate (17) which can be detachably connected to the needle extraction movable block (10), and the connecting plate (17) is pressed on the needle extraction movable block (10) and one end of the needle extraction body (9) close to the annular protrusion (15), and can abut against the annular protrusion (15).

6. The lock forming mold according to claim 1, characterized in that: The lock forming mold further comprises a first slider (21) connected to the first sliding insert (5), a second slider (22) connected to the second sliding insert (6), a first sliding hole (23) penetrating the first slider (21), a second sliding hole (24) penetrating the second slider (22), and a first guide rod (25) and a second guide rod (26) respectively arranged on the upper template (1); the first guide rod (25) is inserted into the first sliding hole (23) and is slidably connected to the hole wall of the first sliding hole (23), and the second guide rod (26) is inserted into the second sliding hole (24) and is slidably connected to the hole wall of the second sliding hole (24); the first guide rod (25) and the second guide rod (26) are arranged opposite to each other, and the bottom ends of the first guide rod (25) and the second guide rod (26) are inclined in a direction away from each other.

7. A lock forming mold according to any one of claims 1 to 6, characterized in that: The lock forming mold also includes a mold nose inlay (18) inserted into the upper mold core (3) and a through hole (19) arranged on the mold nose inlay (18); the mold nose inlay (18) protrudes into the mold cavity (7), and the extraction needle body (9) is arranged to pass through the through hole (19).

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