Zipper forming die docking tool

Abstract

The utility model discloses a zip fastener forming die butt joint tool relates to zip fastener manufacturing frock technical field. The tool includes base, is seted up with the mounting groove on the base, is connected with the base plate for installing the die in the mounting groove, still be provided with pressure module and push force module on the base, and pressure module is used for from the upper direction to the lower pressure tight base plate, and push force module is used for from the left and right two sides horizontal push pressure fixed base plate. The utility model discloses through the cooperation of pressure module and push force module, has realized the vertical and horizontal two -way three -dimensional locking of plastic zip fastener die, effectively prevented the die micro -movement and the flash production caused by injection high pressure, the interlocking structure that push -on and pressure block formed has further enhanced rigidity. In addition, cooperate chain belt limiting module, ensure the accurate guidance of flexible cloth tape in the die, has the high die change efficiency, the positioning accurate, safe and reliable etc. advantage, has improved the product yield of zip fastener injection moulding significantly.

Description

Technical Field

[0001] This utility model relates to the field of zipper manufacturing tooling technology, specifically to a zipper forming mold docking tool. Background Technology

[0002] The limiting seat is provided with four sets of guide studs. Every two sets of guide studs pass through the limiting part of the corresponding limiting plate, and a limiting nut for preventing the limiting plate from coming off is threaded to the upper end of the guide stud.

[0003] In actual production, plastic zippers come in a wide variety of sizes (such as No. 3, No. 5, No. 8, etc.) and have different tooth shapes, resulting in a very high frequency of mold changes on the production line. Existing zipper injection molding machines typically use multiple bolts to directly lock the mold to the table, making adjustment and alignment inconvenient. Furthermore, due to the high injection pressure and speed of plastic zipper injection, the instantaneous impact force is extremely strong. Under prolonged vibration, this force can easily loosen, causing slight displacement of the mold. Even a slight misalignment of the mold can result in burrs or flash on the injected zipper teeth. In addition, the fabric tape of plastic zippers is usually quite soft, and it is prone to vertical jumping or lateral shifting when pulled into the mold, leading to misalignment of the injected zipper teeth (tape misalignment), which in turn affects product quality.

[0004] Therefore, there is an urgent need to design a zipper forming mold docking tool that can accurately connect, securely lock in both directions, and guide the fabric tape, which will be key to improving the production efficiency and quality of plastic zippers. Utility Model Content

[0005] The purpose of this utility model is to provide a zipper forming mold docking tool, which improves the stability of mold fixing and the ease of assembly and disassembly through a unique base, base plate and bidirectional pressure structure, and is particularly suitable for injection molding of feed zippers.

[0006] The technical solution adopted by this utility model to solve the above problems is: a zipper forming mold docking tool, a pad and a support, including a base, the base having an installation groove, and a base plate for installing the mold being detachably connected in the installation groove; the base is also provided with a pressure module and a thrust module for fixing the base plate, the pressure module being used to press the base plate from above downwards, and the thrust module being used to push and fix the base plate laterally from the left and right sides.

[0007] Preferably, the pressure module includes four pressure units, which are respectively disposed on both sides of the substrate and near the ends; each pressure unit includes a pressure block and a clamp, the pressure block being detachably connected to the substrate and the clamp being detachably connected to the base;

[0008] The pressure block has two sets of countersunk holes, and the base plate has a fixing groove adapted to the pressure block. The bottom of the fixing groove has two sets of screw holes corresponding to the countersunk holes of the pressure block. The pressure block is fixed to the fixing groove by two sets of bolts.

[0009] The clamp includes a clamp base, a clamp arm, and a locking bolt. A screw is provided on the upper surface of the clamp base. One end of the clamp arm is threaded to the screw. The locking bolt is screwed to the other end of the clamp arm and abuts against a limiting groove opened on the upper surface of the clamp block. The base is provided with a T-shaped sliding groove that is adapted to slide with the clamp base.

[0010] Preferably, the thrust module includes two sets of thrust units, which are respectively disposed on the left and right sides of the base plate; each thrust unit includes a push plate, two sets of push seats and a push rod, and the push plate is disposed between two adjacent sets of pressure blocks; the base has C-shaped grooves on both sides that are adapted to slide on the bottom of the push seat, and the bottom of the push seat has a base plate symmetrically disposed on both sides, the base plate has two sets of through holes, and the C-shaped groove has four sets of screw holes at corresponding positions, and the push seat is detachably connected to the C-shaped groove by four sets of bolts passing through the through holes and engaging with the screw holes; the push rod and push seat are threadedly connected, one end of which abuts against the push plate, and the other end is slidably disposed with a drive rod for driving the push plate to move laterally.

[0011] Preferably, the push plate has a U-shaped cross section with a through groove; the end of the pressure block is provided with an extension block, which extends into the through groove of the push plate and slides in cooperation with the through groove.

[0012] Preferably, it further includes a chain belt limiting module, which is detachably connected to one end of the mold mounted on the base plate; the chain belt limiting module includes a limiting seat and two sets of limiting plates, the limiting seat is detachably connected to the end of the mold by bolts; the limiting plate has an L-shaped cross section, including a limiting part and a bending part, the bending part is narrower than the limiting part and is clamped and fixed between the mold and the limiting seat, so that a gap is formed between the limiting part and the upper surface of the limiting seat for the chain belt to slide.

[0013] Preferably, the limiting seat is provided with four sets of guide studs, and every two sets of guide studs pass through the limiting part of the corresponding limiting plate, and a limiting nut for preventing the limiting plate from falling out is threadedly connected to the upper end of the guide studs.

[0014] Compared with the prior art, this utility model has the following advantages and effects:

[0015] This invention utilizes a pressure module to apply vertical pressure and a thrust module to apply horizontal thrust, forming a three-dimensional locking structure that combines vertical and horizontal forces. This combination effectively counteracts the impact of high-pressure injection and high-frequency vibration during plastic zipper injection molding, completely solving the problem of mold micro-movement caused by the easy loosening of traditional bolt fixings. This avoids burrs, flash, and dimensional deviations in the zipper teeth, ensuring product quality. The push plate in the thrust module uses a U-shaped through-slot, which cooperates with the extension block at the end of the pressure block to form a mechanical interlocking structure similar to a mortise and tenon joint. While providing lateral thrust, the push plate limits the warping deformation of the pressure block and the edge of the base plate, further improving the stability of the mold under extreme stress. Utilizing the T-shaped and C-shaped slides on the base, the positions of the pressure module and the thrust module can be flexibly adjusted to accommodate zipper molds of different lengths and specifications (such as No. 3, No. 5, and No. 8). When changing molds, only the base plate and mold components need to be replaced, eliminating the need for repeated hole alignment and avoiding positioning deviations caused by wear on the mounting holes, thus shortening downtime for mold changes. The specially designed chain belt limiting module uses an L-shaped limiting plate to provide a precise guiding channel for the flexible conveyor belt, preventing belt jumping and deviation (belt misalignment). Simultaneously, the design of the guide studs and limiting nuts enables the handling of foreign objects stuck in the belt; furthermore, the limiting nuts effectively prevent the limiting plate from flying off and injuring people due to fatigue fracture, improving the operational safety of the equipment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the zipper forming mold docking tool of Embodiment 1 of this utility model.

[0017] Figure 2 This is a schematic diagram of the pressure unit in Embodiment 1 of this utility model.

[0018] Figure 3 This is a schematic diagram of the thrust unit in Embodiment 1 of this utility model.

[0019] Figure 4 This is a schematic diagram of the connection structure between the pressure block and the push plate in Embodiment 1 of this utility model.

[0020] Figure 5 This is a cross-sectional view of the connection structure between the pressure block and the push plate in Embodiment 1 of this utility model.

[0021] Figure 6 This is a cross-sectional view of the connection structure between the pressure block and the push plate in Embodiment 1 of this utility model.

[0022] Figure 7 This is a schematic diagram of the structure of the zipper forming mold docking tool of Embodiment 2 of this utility model.

[0023] Figure 8 This is a schematic diagram of the limiting unit in Embodiment 2 of this utility model.

[0024] Figure Numbers: Base 1, Mounting Slot 2, Base Plate 3, Fixing Slot 31, Pressure Module 4, Pressure Block 41, Countersunk Hole 42, Limiting Slot 43, Extension Block 44, Clamp 45, Clamp Seat 451, Clamp Arm 452, Locking Bolt 453, Thrust Module 5, Push Plate 51, Through Slot 511, Push Seat 52, Push Rod 53, Drive Rod 54, Base Plate 55, Chain Belt Limiting Module 6, Limiting Seat 61, Limiting Plate 62, Limiting Part 621, Bending Part 622, Guide Stud 63, Limiting Nut 64, T-Shaped Slide 7, C-Shaped Slide 8. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0026] Example 1:

[0027] See Figure 1 - Figure 6 In this embodiment, a zipper forming mold docking tool is involved, which is specifically used for fixing the lower mold on the worktable of a plastic zipper (such as a rubber zipper, resin zipper, etc.) injection molding machine. Specifically, it includes a base 1, on which an installation groove 2 is provided, and a base plate 3 for installing the mold is detachably connected in the installation groove 2; the base 1 is also provided with a pressure module 4 and a thrust module 5 for fixing the base plate 3. The pressure module 4 is used to press the base plate 3 from above downwards, and the thrust module 5 is used to push and fix the base plate 3 laterally from the left and right sides.

[0028] Specifically, in this embodiment, the zipper injection mold to be used is first pre-locked onto the base plate 3 using screws or bolts to form a mold assembly. During mold changing operations, the operator places the base plate 3 directly into the mounting groove 2 of the base 1. Due to the high injection pressure and frequency during plastic zipper injection, this embodiment employs a vertical and horizontal two-way three-dimensional locking scheme to prevent zipper teeth from developing flash or dimensional deviations due to micro-movements in the mold. The pressure module 4 applies a large vertical downward clamping force to counteract the vertical vibrations during mold opening and closing and injection; the thrust module 5 applies a horizontal inward thrust to eliminate the lateral gap between the base plate 3 and the mounting groove 2, achieving alignment. This structural design changes the traditional point-to-point fixing method that cannot be adjusted, significantly improving the rigidity of the mold fixation and effectively solving the problems of inconvenient mold changing alignment and low product yield caused by micro-movements in the background art. Since the substrate 3 in this embodiment can be used as a support, during the mold changing operation, only the substrate 3 and the mold mounted on it need to be replaced at the same time, which can effectively avoid the positioning deviation caused by the wear of the holes due to the need for separate disassembly and assembly of traditional molds during replacement.

[0029] In this embodiment, the pressure module 4 includes four pressure units, which are respectively disposed on both sides of the substrate 3 and near the ends; see also Figure 2 The pressure unit includes a pressure block 41 and a clamp 45. The pressure block 41 is detachably connected to the base plate 3, and the clamp 45 is detachably connected to the base 1. The pressure block 41 has two sets of countersunk holes 42. The base plate 3 has a fixing groove 31 adapted to the pressure block 41. The bottom of the fixing groove 31 has two sets of screw holes corresponding to the countersunk holes 42 of the pressure block 41. The pressure block 41 is fixed to the fixing groove 31 by two sets of bolts. The clamp 45 includes a clamp seat 451, a clamp arm 452, and a locking bolt 453. A screw is provided on the upper surface of the clamp seat 451. One end of the clamp arm 452 is threaded to the screw. The locking bolt 453 is screwed to the other end of the clamp arm 452 and abuts against the limiting groove 43 opened on the upper surface of the pressure block 41. The base 1 has a T-shaped sliding groove 7 that is adapted to slide with the clamp seat 451. The clamp 45 assembly engages with the T-shaped groove 7 of the base 1 via a slider at its bottom, allowing the clamp 45 to move along the groove. Since the mold base plate 3 may have different lengths corresponding to different sizes of plastic zippers (e.g., size 3, 5, and 8), the operator can adjust the position of the clamp 45 by sliding it according to the current position of the pressure block 41 installed on the base plate 3 to align it. Once aligned, rotating the clamp arm 452 causes the locking bolt 453 to press downwards into the limiting groove 43 on the surface of the pressure block 41. The sidewall of the limiting groove 43 limits the head of the locking bolt 453, preventing the clamp 45 from slipping under high-frequency vibration. Through the adjustment of the T-shaped groove 7 and the locking of the clamp 45, stable clamping of molds of different sizes is achieved, improving the tool's versatility and mold-changing efficiency.

[0030] In this embodiment, the thrust module 5 includes two sets of thrust units, which are respectively disposed on the left and right sides of the substrate 3; see also Figure 3The thrust unit includes a push plate 51, two sets of push seats 52, and a push rod 53. The push plate 51 is positioned between two adjacent sets of pressure blocks 41. The base 1 has C-shaped grooves 8 on both sides that slide to fit the bottom of the push seats 52. The push seats 52 have symmetrically arranged base plates 55 on both sides of their bottom, each with two sets of through holes. The C-shaped grooves 8 have four sets of screw holes at corresponding positions. The push seats 52 are detachably connected to the C-shaped grooves 8 by four bolts passing through the through holes and engaging with the screw holes. The push rod 53 is threaded to the push seats 52, with one end abutting against the push plate 51 and the other end slidably equipped with a drive rod 54 for driving the push plate 51 to move laterally. The thrust module 5 is mainly responsible for the lateral positioning and locking of the mold. The push seats 52 are installed in the C-shaped grooves 8 on the side of the base 1 and also have a position adjustment function to avoid water channels or ejector pin structures on the mold. When the operator rotates the drive rod 54, the push rod 53 rotates forward, pushing the push plate 51 towards the base plate 3. Since the push plates 51 are located on both sides, driving both to push inward simultaneously can push the base plate 3 towards the center of the mounting groove 2, eliminating the installation gap. This lateral locking force not only ensures the precise alignment of the mold cavity and the upper injection nozzle, but also effectively resists the lateral expansion force generated when the injection molten metal fills the mold cavity, further preventing mold misalignment, thereby ensuring the meshing accuracy and appearance quality of the plastic zipper teeth.

[0031] See Figure 4 - Figure 6 In this embodiment, the push plate 51 has a U-shaped cross-section with a through groove 511. The end of the pressure block 41 is provided with an extension block 44, which extends into the through groove 511 of the push plate 51 and slides within it. When the push plate 51 moves inward under the drive of the push rod 53, the extension block 44 at the end of the pressure block 41 will naturally insert into the U-shaped through groove 511 of the push plate 51. First, the two ends of the push plate 51 apply vertical restriction to the extension block 44 through its through groove 511, meaning the push plate 51 also effectively acts as a pressing and fixing mechanism, preventing the edge of the substrate 3 from warping or flipping upward under injection pressure. Second, the cooperation between the extension block 44 and the through groove 511 increases the force-bearing fulcrum between the push plate 51 and the substrate 3. By providing a snap-fit ​​structure (forming a mortise and tenon-like interlocking structure) at the end of the push plate 51 and the extension block 44, the extension block 44 is pressed tightly, effectively preventing the pressure block 41 from loosening. At the same time, it enhances the overall rigidity of the mold fixing system, ensuring the stability of mold fixing even under high-speed and high-pressure operation of the injection molding machine.

[0032] Example 2:

[0033] To address the challenges of soft fabric tape and difficult positioning during high-speed operation in plastic zipper production, this embodiment adds a zipper tape limiting module 6 to the existing embodiment 1. (See also...) Figure 7 and Figure 8The chain belt limiting module 6 is detachably connected to one end of the mold mounted on the base plate 3. The chain belt limiting module 6 includes a limiting seat 61 and two sets of limiting plates 62. The limiting seat 61 is detachably connected to the end of the mold by bolts. The limiting plate 62 has an L-shaped cross-section, including a limiting part 621 and a bent part 622. The width of the bent part 622 is smaller than that of the limiting part 621 and is clamped and fixed between the mold and the limiting seat 61, so that a gap is formed between the limiting part 621 and the upper surface of the limiting seat 61 for the chain belt to slide. The fabric of the plastic zipper is usually a flexible webbing. If there is no effective constraint before entering the mold, it is easy to jump up and down or deviate left and right, causing the injection-molded chain teeth to deviate from the center line of the fabric (i.e., deviated belt). In this embodiment, by setting the L-shaped limiting plate 62, during installation, the bent part 622 of the limiting plate 62 is pressed as a mounting base, while the suspended limiting part 621 covers the top of the fabric. By controlling the height of the bending portion 622, the gap height between the limiting portion 621 and the mold surface (or the surface of the limiting seat 61) can be adjusted to be slightly greater than the thickness of the fabric strip. This forms a guide channel in which the fabric strip is confined to the same horizontal plane as it passes through, preventing it from floating or flipping, thereby ensuring the accuracy of the chain tooth injection position and significantly reducing the scrap rate.

[0034] The limiting seat 61 is provided with four sets of guide studs 63. Every two sets of guide studs 63 pass through the limiting part 621 of the corresponding limiting plate 62, and a limiting nut 64 is threadedly connected to the upper end of the guide stud 63 to prevent the limiting plate 62 from falling out. In actual production, occasional oversized fabric tape joints or injection splashes may cause the fabric tape to get stuck in the limiting module. In this case, loosen the bolts at the limiting seat 61, and then loosen the limiting nut 64 at the top of the stud. The limiting plate 62 can then open upwards along the guide studs 63, exposing the fabric tape channel for cleaning foreign objects or straightening the fabric tape. After cleaning, the limiting plate 62 can be reinstalled to resume production. In addition, the bend between the bending part 622 and the limiting part 621 is prone to breakage due to stress concentration after prolonged use. The setting of the limiting nut 64 can effectively prevent the limiting part 621 from breaking and flying out of the limiting seat 61, thus improving operational safety.

[0035] The above description in this specification is merely illustrative of the present invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not depart from the content of this specification or exceed the scope defined in the claims, all of which shall fall within the protection scope of this invention.

Claims

1. A zipper forming mold docking tool, characterized in that, The device includes a base with an installation groove, in which a base plate for mounting a mold is detachably connected; the base is also provided with a pressure module and a thrust module for fixing the base plate, the pressure module for pressing the base plate from above downwards, and the thrust module for pushing and fixing the base plate laterally from the left and right sides.

2. The zipper forming mold docking tool according to claim 1, characterized in that: The pressure module includes four pressure units, which are respectively disposed on both sides of the substrate and near the ends; each pressure unit includes a pressure block and a clamp, the pressure block being detachably connected to the substrate and the clamp being detachably connected to the base; The pressure block has two sets of countersunk holes, and the base plate has a fixing groove adapted to the pressure block. The bottom of the fixing groove has two sets of screw holes corresponding to the countersunk holes of the pressure block. The pressure block is fixed to the fixing groove by two sets of bolts. The clamp includes a clamp base, a clamp arm, and a locking bolt. A screw is provided on the upper surface of the clamp base. One end of the clamp arm is threaded to the screw. The locking bolt is screwed to the other end of the clamp arm and abuts against a limiting groove opened on the upper surface of the clamp block. The base is provided with a T-shaped sliding groove that is adapted to slide with the clamp base.

3. The zipper forming mold docking tool according to claim 2, characterized in that: The thrust module includes two sets of thrust units, which are respectively disposed on the left and right sides of the base plate. Each thrust unit includes a push plate, two sets of push seats, and a push rod. The push plate is disposed between two adjacent sets of pressure blocks. The base has C-shaped grooves on both sides that are adapted to slide on the bottom of the push seat. The bottom of the push seat has a base plate symmetrically disposed on both sides. The base plate has two sets of through holes. The C-shaped groove has four sets of screw holes at corresponding positions. The push seat is detachably connected to the C-shaped groove by four sets of bolts passing through the through holes and engaging with the screw holes. The push rod is threadedly connected to the push seat. One end of the push rod abuts against the push plate, and the other end is slidably disposed with a drive rod for driving the push plate to move laterally.

4. The zipper forming mold docking tool according to claim 3, characterized in that: The push plate has a U-shaped cross section with a through groove; the end of the pressure block is provided with an extension block, which extends into the through groove of the push plate and slides in cooperation with the through groove.

5. The zipper forming mold docking tool according to claim 1, characterized in that: It also includes a chain belt limiting module, which is detachably connected to one end of the mold mounted on the base plate; the chain belt limiting module includes a limiting seat and two sets of limiting plates, the limiting seat is detachably connected to the end of the mold by bolts; the limiting plate has an L-shaped cross section, including a limiting part and a bending part, the bending part is narrower than the limiting part and is clamped and fixed between the mold and the limiting seat, so that a gap is formed between the limiting part and the upper surface of the limiting seat for the chain belt to slide.

6. The zipper forming mold docking tool according to claim 5, characterized in that: The limiting seat is provided with four sets of guide studs. Every two sets of guide studs pass through the limiting part of the corresponding limiting plate, and a limiting nut for preventing the limiting plate from coming off is threaded to the upper end of the guide stud.

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