Plastic one-piece head mold

Abstract

The utility model relates to the technical field of zipper head production, in particular to a plastic conjoined head mold. The mold comprises a lower mold frame, an upper mold frame covering the lower mold frame, a lower mold core arranged in the lower mold frame, an upper mold core, an elastic piece, a second ejector rod arranged in the lower mold core in a sliding manner, a first ejector rod arranged in the upper mold core in a sliding manner, and a first upper sliding block and a second upper sliding block arranged in the upper mold core in a sliding manner, wherein the upper mold core and the elastic piece are arranged in the upper mold frame; the first lower sliding block and the second lower sliding block are arranged in the lower mold core in a sliding mode, and the elastic piece abuts against the inner wall of the upper mold frame and the first ejector rod. And the zipper head can be conveniently separated from the finished product mold cavity, so that the zipper head can be quickly demolded. The elastic piece is additionally arranged, the elastic piece releases elastic potential energy while the upper mold core is lifted, the first upper sliding block and the second upper sliding block are pushed to move through the first ejector rod, a power source needed by demolding is reduced, and the production cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of zipper head production, in particular to a plastic one-piece head mold. Background Art

[0002] With the rapid development of society and economy, the uses and types of zippers are increasing, and the number of zippers used is increasing, so people's requirements for zippers will become higher and higher. In the patent application number CN200720054572.3, the patent application name is a mold for integrally forming a zipper head, which includes a mold shell, a mechanical action connector, and a mold cavity. The mold cavity includes an upper finished mold core and a lower finished mold core. The upper finished mold core is provided with an outer shape oblique guide block and an upper finished core. The upper finished core is centered on two symmetrical outer shape oblique guide blocks. The lower finished mold core is provided with an outer shape oblique guide block and a lower finished core at the corresponding position of the upper finished mold core. The lower finished core is centered on two symmetrical outer shape oblique guide blocks. The outer shape oblique guide block is provided with an oblique slide and an opener and closeer mold cavity. The outer shape oblique guide block is provided with a hook on the side. A handle mold cavity is also provided between the upper finished mold core and the lower finished mold core.

[0003] The structure of the slider in this patent is complex, and the production and installation are inconvenient. The synchronization of the slider during demoulding is poor, and the cost of the power source required for the slider movement is high. Therefore, the defects are very obvious, and a solution is urgently needed. Utility Model Content

[0004] In order to solve the above technical problems, the purpose of the utility model is to provide a plastic one-piece head mold.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A plastic one-piece head mold, which includes a lower mold frame, an upper mold frame covering the lower mold frame, a lower mold core arranged in the lower mold frame, upper mold cores and elastic parts respectively arranged in the upper mold frame, a second push rod slidably arranged in the lower mold core, a first push rod slidably arranged in the upper mold core, a first upper slider and a second upper slider respectively slidably arranged in the upper mold core, a first lower slider and a second lower slider respectively slidably arranged in the lower mold core, and a finished mold cavity surrounded by the upper mold core, the lower mold core, the first upper slider, the second upper slider, the first lower slider and the second lower slider, the second push rod can synchronously drive the first lower slider and the second lower slider to slide upwards, the elastic parts are respectively in contact with the inner wall of the upper mold frame and the first push rod, and the elastic parts can synchronously drive the first upper slider and the second upper slider to slide downwards through the first push rod.

[0007] Furthermore, the finished product mold cavity includes a zipper head body cavity, a trunk cavity and a pull tab cavity, the zipper head body cavity is formed by a recessed upper mold core and a lower mold core, the pull tab cavity is formed by a recessed inner wall of the upper mold core, the lower mold core, the first lower slider, the second lower slider, the first upper slider and the second upper slider, and the trunk cavity is formed by a recessed inner wall of the first lower slider, the second lower slider, the first upper slider and the second upper slider; the two ends of the trunk cavity are respectively connected to the zipper head body cavity, and the middle part of the trunk cavity passes through the hollow space of the pull tab cavity.

[0008] Furthermore, a first guide slide bar is provided on the first upper slide bar, a second guide slide bar is provided on the second upper slide bar, a first guide slot and a second guide slot are provided on the upper mold core, the first guide slide bar is inserted in the first guide slot and is slidably connected to the first guide slot; the second guide slide bar is inserted in the second guide slot and is slidably connected to the second guide slot; the first guide slot and the second guide slot are inclined in a direction away from each other at one end close to the lower mold core.

[0009] Furthermore, a limiting block is also arranged on the first upper sliding block, and a limiting groove is arranged on the upper die core, and the limiting block can slide relative to the limiting groove.

[0010] Furthermore, the first push rod is configured to be T-shaped, and an end of the first push rod with a larger diameter is respectively in contact with the first upper slider and the second upper slider.

[0011] Furthermore, the plastic one-piece head mold also includes a base arranged below the lower mold frame and a lifting mechanism arranged on the base; the lifting mechanism is used to lift the upper mold frame upward to open the mold.

[0012] Furthermore, the ejection mechanism includes an ejection plate movably arranged on the base and a first ejector pin, a second ejector pin and a reset ejector pin respectively arranged on the ejection plate, the first ejector pin penetrates the lower mold frame and then abuts against the second ejector pin; an injection molding runner is arranged on the lower mold core, and the injection molding runner is connected to the finished product mold cavity; the second ejector pin penetrates the lower mold frame and the lower mold core and then protrudes into the injection molding runner; the reset ejector pin penetrates the lower mold frame and then abuts against the upper mold frame.

[0013] Beneficial effects of the utility model: The first upper slider, the second upper slider, the first lower slider and the second lower slider of the utility model have simple structures and are easy to produce. The first upper slider and the second upper slider are driven to move synchronously through the cooperation of the elastic member and the first push rod, and the first lower slider and the second lower slider are driven to move synchronously through the second push rod, so that the zipper head is easy to be released from the finished product mold cavity, which is conducive to the rapid demolding of the zipper head. The elastic member is added, and while the upper mold core is lifted, the elastic member releases elastic potential energy, and the first push rod pushes the first upper slider and the second upper slider to move, which reduces the power source required for demolding and saves production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of a partial three-dimensional structure of the utility model.

[0015] Figure 2 This is a full cutaway view of the utility model Figure 1 .

[0016] Figure 3 This is a full cutaway view of the utility model Figure 2 .

[0017] Figure 4 It is a schematic diagram of the local three-dimensional structure of the utility model Figure 1 .

[0018] Figure 5 It is a schematic diagram of the local three-dimensional structure of the utility model Figure 2 .

[0019] Figure 6 It is a schematic diagram of the local three-dimensional structure of the utility model Figure 3 .

[0020] Description of reference numerals:

[0021] 1. Upper mold core; 2. Lower mold core; 3. Elastic member; 4. First ejector rod; 5. Second ejector rod; 6. First upper slider; 7. Second upper slider; 8. First lower slider; 9. Second lower slider; 10. Finished product mold cavity; 11. Zipper head body cavity; 12. Trunk cavity; 13. Pull tab cavity; 14. First guide slide rod; 15. Second guide slide rod; 16. First guide slot; 17. Second guide slot; 18. Limit block; 19. Limit slot; 20. Lower mold frame; 21. Upper mold frame; 22. Base; 23. Ejector mechanism; 24. Ejector plate; 25. First ejector pin; 26. Second ejector pin; 27. Reset ejector pin. DETAILED DESCRIPTION

[0022] 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.

[0023] like Figures 1 to 6As shown, the utility model provides a plastic one-piece head mold, which includes a lower mold frame 20, an upper mold frame 21 covering the lower mold frame 20, a lower mold core 2 arranged in the lower mold frame 20, an upper mold core 1 and an elastic member 3 respectively arranged in the upper mold frame 21, a second ejector rod 5 slidably arranged in the lower mold core 2, a first ejector rod 4 slidably arranged in the upper mold core 1, a first upper slider 6 and a second upper slider 7 respectively slidably arranged in the upper mold core 1, a first lower slider 8 and a second lower slider 9 respectively slidably arranged in the lower mold core 2, and a finished mold cavity 10 surrounded by the upper mold core 1, the lower mold core 2, the first upper slider 6, the second upper slider 7, the first lower slider 8 and the second lower slider 9, the second ejector rod 5 can synchronously drive the first lower slider 8 and the second lower slider 9 to slide upwards, the elastic member 3 is respectively in contact with the inner wall of the upper mold frame 21 and the first ejector rod 4, and the elastic member 3 can synchronously drive the first upper slider 6 and the second upper slider 7 to slide downwards through the first ejector rod 4.

[0024] During actual use, the upper mold core 1 is covered on the lower mold core 2, the first upper slider 6 and the first lower slider 8 are symmetrical up and down, and the second upper slider 7 and the second lower slider 9 are symmetrical up and down. Through the resistance of the first lower slider 8 and the second lower slider 9, the first upper slider 6 and the second upper slider 7 are respectively retracted into the upper mold core 1 and the elastic part 3 is reversely compressed by the first push rod 4. Then, the molten rubber is injected into the finished product mold cavity 10 through an external injection molding machine, and after the rubber is solidified, the mold is opened by the external injection molding machine. During the mold opening process, the upper mold core 1 moves away from the lower mold core 2 upward, the elastic member 3 releases the elastic potential energy and pushes the first upper slider 6 and the second upper slider 7 downward through the first push rod 4. The first upper slider 6 and the second upper slider 7 slide relative to the upper mold core 1 and protrude to the outside of the upper mold core 1, thereby pushing the formed zipper head downward from the finished product mold cavity 10; at the same time, the second push rod 5 pushes the first lower slider 8 and the second lower slider 9 upward, the first lower slider 8 and the second lower slider 9 slide relative to the lower mold core 2 and protrude upward to the outside of the lower mold core 2, thereby pushing the formed zipper head upward from the finished product mold cavity 10, so as to facilitate the subsequent removal of the formed zipper head. The first upper slider 6, the second upper slider 7, the first lower slider 8 and the second lower slider 9 of the utility model have simple structures and are easy to produce. The first upper slider 6 and the second upper slider 7 are driven to move synchronously through the cooperation of the elastic member 3 and the first push rod 4, and the first lower slider 8 and the second lower slider 9 are driven to move synchronously through the second push rod 5, so as to facilitate the zipper head to be released from the finished product mold cavity 10, which is conducive to the rapid demolding of the zipper head. The elastic member 3 is added, and while the upper mold core 1 is lifted, the elastic member 3 releases the elastic potential energy, and the first push rod 4 pushes the first upper slider 6 and the second upper slider 7 to move, thereby reducing the power source required for demolding and saving production costs.

[0025] Furthermore, the finished product mold cavity 10 includes a zipper head body cavity 11, a trunk cavity 12 and a pull-tab cavity 13. The zipper head body cavity 11 is formed by recessing the upper mold core 1 and the lower mold core 2, and the pull-tab cavity 13 is formed by recessing the inner walls of the upper mold core 1, the lower mold core 2, the first lower slider 8, the second lower slider 9, the first upper slider 6 and the second upper slider 7. The trunk cavity 12 is formed by recessing the inner walls of the first lower slider 8, the second lower slider 9, the first upper slider 6 and the second upper slider 7; the two ends of the trunk cavity 12 are respectively connected to the zipper head body cavity 11, and the middle part of the trunk cavity 12 passes through the hollow space of the pull-tab cavity 13.

[0026] During the actual injection molding process, the molten rubber flows into the zipper head body cavity 11 and the pull tab cavity 13 respectively, and the molten rubber in the zipper head body cavity 11 flows into the trunk cavity 12, thereby forming the zipper head body, the trunk and the pull tab respectively. The formed pull tab is sleeved outside the trunk, and the formed trunk and the zipper head body are an integrated structure, thereby realizing the integrated injection molding of the zipper head.

[0027] Furthermore, a first guide slide bar 14 is provided on the first upper slide bar 6, a second guide slide bar 15 is provided on the second upper slide bar 7, and a first guide slot 16 and a second guide slot 17 are provided on the upper mold core 1. The first guide slide bar 14 is inserted into the first guide slot 16 and is slidably connected to the first guide slot 16; the second guide slide bar 15 is inserted into the second guide slot 17 and is slidably connected to the second guide slot 17; the first guide slot 16 and the second guide slot 17 are inclined in a direction away from each other at one end close to the lower mold core 2.

[0028] In the actual sliding process, the first guide slide bar 14 is restricted by the groove wall of the first guide groove 16, so that the first upper slide bar 6 can slide accurately and stably relative to the upper mold core 1. Moreover, the first guide slide bar 14 is restricted in the first guide groove 16, which can prevent the first upper slide bar 6 from escaping from the upper mold core 1 during the sliding process, further improving the stability of the utility model during use. The first guide groove 16 and the second guide groove 17 are tilted, and when the first push rod 4 pushes the first upper slide bar 6 and the second upper slide bar 7 out of the upper mold core 1 respectively, the first upper slide bar 6 and the second upper slide bar 7 slide away from each other relative to the upper mold core 1, so as to facilitate the separation of the trunk from the first upper slide bar 6 and the second upper slide bar 7. The structure and function of the second guide groove 17 and the second guide slide bar 15 are the same or similar to those of the first guide groove 16 and the first guide slide bar 14, and will not be repeated here.

[0029] Furthermore, a limiting block 18 is further provided on the first upper slide block 6 , and a limiting groove 19 is provided on the upper mold core 1 , and the limiting block 18 can slide relative to the limiting groove 19 .

[0030] In the actual sliding process, the sliding cooperation of the limiting block 18 and the limiting groove 19 is added to further improve the stability of the first upper sliding block 6 in the sliding process.

[0031] Furthermore, the structure of the first lower slider 8 is the same as or similar to that of the first upper slider 6, the structure of the second lower slider 9 is the same as or similar to that of the second upper slider 7, and the structure of the upper mold core 1 is the same as or similar to that of the lower mold core 2, which will not be described in detail. The utility model can realize the integrated injection molding of the zipper head and the rapid demoulding of the trunk at the same time.

[0032] Furthermore, the first push rod 4 is configured to be T-shaped, and the end of the first push rod 4 with a larger diameter is respectively in contact with the first upper slider 6 and the second upper slider 7 .

[0033] Specifically, the second push rod 5 has the same or similar structure as the first push rod 4. In actual use, the first upper slider 6 and the second upper slider 7 are driven to slide synchronously by pushing the end of the first push rod 4 with a smaller diameter. The structure of the first push rod 4 is simple and compact.

[0034] Furthermore, the plastic one-piece head mold further comprises a base 22 disposed below the lower mold frame 20 and a material lifting mechanism 23 disposed on the base 22; the material lifting mechanism 23 is used to lift the upper mold frame 21 upwards to open the mold.

[0035] Specifically, the ejection mechanism 23 includes an ejection plate 24 movably arranged on the base 22 and a first ejector pin 25, a second ejector pin 26 and a reset ejector pin 27 respectively arranged on the ejection plate 24, the first ejector pin 25 penetrates the lower mold frame 20 and abuts against the second ejector pin 5; an injection molding flow channel is arranged on the lower mold core 2, and the injection molding flow channel is connected with the finished product mold cavity 10; the second ejector pin 26 penetrates the lower mold frame 20 and the lower mold core 2 and protrudes into the injection molding flow channel; the reset ejector pin 27 penetrates the lower mold frame 20 and abuts against the upper mold frame 21. In the actual mold opening process, the external injection molding machine drives the ejector plate 24 to move upward relative to the base 22, and the ejector plate 24 simultaneously drives the first ejector pin 25 and the second ejector pin 26 to move upward, and the first ejector pin 25 drives the second ejector rod 5, the first lower slider 8 and the second lower slider 9 to slide upward relative to the lower mold core 2 respectively, and the second ejector pin 26 slides upward relative to the lower mold core 2 and pushes up the rubber material in the injection flow channel, thereby synchronously pushing up the zipper head finished product in the finished mold cavity 10. In the actual mold closing process, the upper mold core 1 is downwardly covered on the lower mold core 2, and the reset ejector pin 27 is pressed downward by the upper mold frame 21, and the ejector plate 24, the first ejector pin 25 and the second ejector pin 26 are reset by the reset ejector pin 27. The ejector structure is simple and compact, and the first ejector pin 25 and the second ejector pin 26 are easy to reset.

[0036] All technical features in this embodiment can be freely combined according to actual needs.

[0037] 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 plastic one-piece head mold, characterized in that: The invention comprises a lower mold frame (20), an upper mold frame (21) covering the lower mold frame (20), a lower mold core (2) arranged in the lower mold frame (20), an upper mold core (1) and an elastic member (3) respectively arranged in the upper mold frame (21), a second ejector rod (5) slidably arranged in the lower mold core (2), a first ejector rod (4) slidably arranged in the upper mold core (1), a first upper slider (6) and a second upper slider (7) respectively slidably arranged in the upper mold core (1), a first lower slider (8) and a second lower slider (9) respectively slidably arranged in the lower mold core (2), and a second ejector rod (10) and a second ejector rod (11) respectively slidably arranged in the upper mold core (1). A lower slider (9) and a finished product mold cavity (10) formed by an upper mold core (1), a lower mold core (2), a first upper slider (6), a second upper slider (7), a first lower slider (8) and a second lower slider (9); the second push rod (5) can synchronously drive the first lower slider (8) and the second lower slider (9) to slide upward; the elastic member (3) is respectively in contact with the inner wall of the upper mold frame (21) and the first push rod (4); the elastic member (3) can synchronously drive the first upper slider (6) and the second upper slider (7) to slide downward through the first push rod (4).

2. The plastic one-piece head mold according to claim 1, characterized in that: The finished product mold cavity (10) comprises a zipper head body mold cavity (11), an elephant trunk mold cavity (12) and a pull-tab mold cavity (13); the zipper head body mold cavity (11) is formed by concavely setting the upper mold core (1) and the lower mold core (2); the pull-tab mold cavity (13) is formed by concavely setting the inner walls of the upper mold core (1), the lower mold core (2), the first lower slider (8), the second lower slider (9), the first upper slider (6) and the second upper slider (7); the elephant trunk mold cavity (12) is formed by concavely setting the inner walls of the first lower slider (8), the second lower slider (9), the first upper slider (6) and the second upper slider (7); the two ends of the elephant trunk mold cavity (12) are respectively connected to the zipper head body mold cavity (11), and the middle part of the elephant trunk mold cavity (12) passes through the hollow space of the pull-tab mold cavity (13).

3. The plastic one-piece head mold according to claim 1, characterized in that: The first upper slider (6) is provided with a first guide slide bar (14), the second upper slider (7) is provided with a second guide slide bar (15), the upper mold core (1) is provided with a first guide slide groove (16) and a second guide slide groove (17), the first guide slide bar (14) is inserted into the first guide slide groove (16) and is slidably connected to the first guide slide groove (16); the second guide slide bar (15) is inserted into the second guide slide groove (17) and is slidably connected to the second guide slide groove (17); the first guide slide groove (16) and the second guide slide groove (17) are inclined in a direction away from each other at one end close to the lower mold core (2).

4. The plastic one-piece head mold according to claim 3, characterized in that: A limiting block (18) is also provided on the first upper sliding block (6), and a limiting groove (19) is provided on the upper die core (1), and the limiting block (18) can slide relative to the limiting groove (19).

5. The plastic one-piece head mold according to claim 1, characterized in that: The first push rod (4) is arranged in a T shape, and the end of the first push rod (4) with a larger diameter is respectively in contact with the first upper slider (6) and the second upper slider (7).

6. The plastic one-piece head mold according to claim 1, characterized in that: The plastic one-piece head mold further comprises a base (22) arranged below the lower mold frame (20) and a material lifting mechanism (23) arranged on the base (22); the material lifting mechanism (23) is used to lift the upper mold frame (21) upwards to open the mold.

7. The plastic one-piece head mold according to claim 6, characterized in that: The ejection mechanism (23) comprises an ejection plate (24) movably arranged on the base (22) and a first ejector pin (25), a second ejector pin (26) and a reset ejector pin (27) respectively arranged on the ejection plate (24); the first ejector pin (25) penetrates the lower mold frame (20) and then abuts against the second ejector pin (5); an injection molding flow channel is arranged on the lower mold core (2), and the injection molding flow channel is connected to the finished product mold cavity (10); the second ejector pin (26) penetrates the lower mold frame (20) and the lower mold core (2) and then protrudes into the injection molding flow channel; the reset ejector pin (27) penetrates the lower mold frame (20) and then abuts against the upper mold frame (21).

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