A metal zipper tooth stamping and bending die

Abstract

This utility model relates to the field of zipper tooth processing technology, and discloses a metal zipper tooth stamping and bending die, including a base, a support frame and a bottom mold fixedly installed on the upper end of the base, a cylinder fixedly installed on the upper end of the support frame, the output end of the cylinder passing through the support frame and having a connecting plate installed thereon, a stamping block provided at the lower end of the connecting plate, and a fixing structure provided between the connecting plate and the stamping block, the fixing structure including a sleeve threadedly connected to the connecting plate, the sleeve having an axially formed placement groove and a slidingly connected moving rod. This utility model, through the provided fixing structure, enables quick installation and disassembly between the connecting plate and the stamping block.

Description

Technical Field

[0001] This utility model relates to the field of zipper tooth processing technology, specifically a metal zipper tooth stamping and bending die. Background Technology

[0002] Metal zippers are connectors that use continuously arranged teeth to join or separate items. They consist of teeth, a slider, top and bottom stops or locking components. In the manufacturing process of zippers, it is often necessary to bend the zipper teeth to facilitate joining or separating the zipper.

[0003] Utility model patent application with publication number "CN219233627U" discloses a stamping and bending die for processing zipper teeth, mainly composed of a base, side plates, horizontal plates, cylinders, stamping blocks, and a bottom die. This technical solution, through the coordinated use of the base, side plates, horizontal plates, cylinders, stamping blocks, bottom die, shell, first spring, limiting plate, limiting rod, lifting plate, top rod, top plate, sliding rod, sliding sleeve, second spring, and elastic plate, solves the problem that existing stamping and bending dies for processing zipper teeth lack an automatic ejection structure, causing the zipper to become stuck in the die after stamping and difficult to remove, resulting in reduced stamping and bending efficiency and hindering practical use.

[0004] The stamping and bending die for zipper teeth processing disclosed in the aforementioned document has the following defects: In this technical solution, the stamping block, as the component that directly performs the stamping action, will inevitably experience wear, fatigue, or even plastic deformation on its working surface after being subjected to high-frequency and high-impact loads for a long time. This leads to a decrease in the dimensional accuracy of the final formed zipper teeth and quality problems such as burrs on the surface. At the same time, in the existing technology, the stamping block is usually rigidly connected to the cylinder output end by fasteners such as bolts. When replacing it, multiple bolt components need to be disassembled and re-aligned and installed. This process is not only time-consuming and labor-intensive, resulting in a loss of production efficiency, but also the deviation in installation will directly affect the fitting accuracy between the stamping block and the bottom die, thereby aggravating wear and forming a vicious cycle. Utility Model Content

[0005] The purpose of this utility model is to provide a metal zipper tooth stamping and bending die, which solves the problem that the stamping block is usually rigidly connected to the cylinder output end by fasteners such as bolts, and that multiple bolt parts need to be disassembled and re-aligned and installed when replacing it, which is inconvenient.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a metal zipper tooth stamping and bending die, comprising a base, a support frame and a bottom mold fixedly mounted on the upper end of the base, a cylinder fixedly mounted on the upper end of the support frame, the output end of the cylinder passing through the support frame and mounted with a connecting plate, a stamping block provided at the lower end of the connecting plate, a fixing structure provided between the connecting plate and the stamping block, the fixing structure including a sleeve threadedly connected to the connecting plate, an axially formed placement groove and a slidingly connected moving rod inside the sleeve, a lower pressing block fixedly connected to the upper end of the moving rod, an extrusion block fixedly connected to the lower end of the moving rod, a first spring sleeved on the outer side of the moving rod, the upper end of the first spring fixedly connected to the lower pressing block, and the lower end fixedly connected to the inner bottom of the placement groove, multiple through holes provided on the outer side of the sleeve, each through hole containing a ball, the circumferential side of the extrusion block contacting the outer side of the ball, an mounting hole adapted to the lower part of the sleeve provided at the upper end of the stamping block, and the outer side of the ball abutting against the inner wall of the mounting hole.

[0007] Furthermore, the lower end of the connecting plate is provided with at least two positioning holes, and the upper end of the stamping block is fixedly provided with positioning posts corresponding to the number and position of the positioning holes, and the positioning posts are inserted into the corresponding positioning holes.

[0008] Furthermore, the upper end of the sleeve has an outwardly folded outer edge, and the outer side of the outer edge is covered with a flexible outer shell.

[0009] Furthermore, the extrusion block includes a column and a baffle fixed to the lower end of the column, and the upper end of the column is formed with a conical surface for contacting the ball.

[0010] Furthermore, two guide rods are symmetrically arranged between the support frame and the base. The two ends of the guide rods are threadedly connected to the support frame and the base, respectively, and a second spring is sleeved on the outer side of the guide rods.

[0011] Furthermore, a side plate is fixedly installed on the outer side of the connecting plate by bolts. The side plate has a sliding hole that matches the guide rod and is slidably connected to the outer side of the guide rod through the sliding hole. The upper end of the second spring is fixedly connected to the lower end of the side plate and the lower end is fixedly connected to the upper end of the base.

[0012] This utility model has the following beneficial effects: (1) In this utility model, by pressing down the pressing block, the pressing block drives the fixed moving rod to slide down in the placement groove of the sleeve and compress the first spring. The extrusion block at the lower end of the moving rod moves down synchronously, so that it no longer applies radial outward force to the ball. The ball retracts inward into the sleeve under the limit of the through hole. Then, the mounting hole at the upper end of the stamping block is aligned with the positioning post and the sleeve at the lower end of the connecting plate and pushed upward, so that the lower part of the sleeve can smoothly enter the mounting hole. At this time, the downward pressure on the pressing block is released, and the compressed first spring begins to recover its elasticity. Its restoring force pushes the pressing block and the moving rod to reset upward as a whole. The extrusion block at the lower end of the moving rod also rises. During the rising process, the extrusion block pushes all the balls in the through hole of the sleeve outward evenly until the outer side of the ball forms a tight contact and extrusion with the inner wall of the mounting hole. Through this radial locking force, the stamping block is finally firmly fixed under the connecting plate, achieving the effect of quick installation.

[0013] (2) When the cylinder drives the connecting plate and the stamping block to perform the stamping operation downward, the side plates fixed on both sides of the connecting plate slide down synchronously along the guide rod and compress the second spring. During this process, the guide rod provides precise vertical guidance for the entire movement, effectively preventing the stamping block from shifting or twisting laterally, and ensuring its precise alignment with the bottom mold. When the cylinder returns after stamping, the compressed second spring releases its stored energy, and its restoring force pushes the connecting plate and the stamping block upward through the side plate to return to their original positions smoothly and quickly. This not only improves the stability and processing accuracy of stamping through rigid guidance, but also absorbs the impact energy at the end of the stamping by utilizing the buffering effect of the second spring.

[0014] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

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

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 Exploded view of cylinder, connecting plate, stamping block and fixing structure; Figure 3 This is a cross-sectional view of the connecting plate, stamping block, and fixing structure. Figure 4 This is a schematic diagram of the extrusion block structure; The attached diagram lists the components represented by each number as follows: In the diagram: 1. Base; 2. Support frame; 3. Bottom mold; 4. Cylinder; 5. Connecting plate; 501. Positioning hole; 6. Stamping block; 601. Positioning post; 7. Fixing structure; 701. Sleeve; 702. Moving rod; 703. Lower pressing block; 704. Extrusion block; 7041. Column; 7042. Baffle; 7043. Conical surface; 705. First spring; 706. Ball bearing; 707. Outer edge; 708. Flexible shell; 8. Guide rod; 9. Second spring; 10. Side plate. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1-4 As shown, this utility model is a metal zipper tooth stamping and bending die, including a base 1. A support frame 2 and a bottom mold 3 are fixedly installed on the upper end of the base 1. A cylinder 4 is fixedly installed on the upper end of the support frame 2. The output end of the cylinder 4 passes through the support frame 2 and is equipped with a connecting plate 5. A stamping block 6 is provided at the lower end of the connecting plate 5. A fixing structure 7 is provided between the connecting plate 5 and the stamping block 6. The fixing structure 7 includes a sleeve 701 that is threadedly connected to the connecting plate 5. The sleeve 701 has an axially opened placement groove and a sliding rod 702 is slidably connected to it. The upper end of the sliding rod 702 is fixedly connected to... A pressing block 703 is attached to the lower end of the moving rod 702, and an extrusion block 704 is fixedly connected to the lower end of the moving rod 702. A first spring 705 is sleeved on the outer side of the moving rod 702. The upper end of the first spring 705 is fixedly connected to the pressing block 703, and the lower end is fixedly connected to the inner bottom of the placement groove. Multiple through holes are opened on the outer side of the sleeve 701, and a ball 706 is provided in each through hole. The peripheral side of the extrusion block 704 contacts the outer side of the ball 706. An installation hole adapted to the lower part of the sleeve 701 is opened at the upper end of the stamping block 6. The outer side of the ball 706 abuts against the inner wall of the installation hole. During the installation of the stamping block 6, the operator first presses down the pressing block 703. The pressing block 703 drives the fixed moving rod 702 to slide downward in the placement groove of the sleeve 701, compressing the first spring 705. The pressing block 704 at the lower end of the moving rod 702 moves down synchronously, so that it no longer applies radial outward force to the ball 706. The ball 706 retracts inward into the sleeve 701 under the limit of the through hole. Then, the mounting hole at the upper end of the stamping block 6 is aligned with the positioning post 601 at the lower end of the connecting plate 5 and the sleeve 701, and pushed upward, so that the sleeve 701... The lower part of 01 smoothly enters the mounting hole. At this time, the downward pressure on the lower pressure block 703 is released, and the compressed first spring 705 begins to recover its elasticity. Its restoring force pushes the lower pressure block 703 and the moving rod 702 to return to their original position. The pressing block 704 at the lower end of the moving rod 702 also rises. During the rising process, the pressing block 704 pushes all the balls 706 in the through hole of the sleeve 701 outward evenly until the outer side of the balls 706 forms a tight contact and compression with the inner wall of the mounting hole. Through this radial locking force, the stamping block 6 is finally firmly fixed below the connecting plate 5. The lower end of the connecting plate 5 is also provided with at least two positioning holes 501, and the upper end of the stamping block 6 is fixedly provided with positioning pins 601 corresponding to the number and position of the positioning holes 501. The positioning pins 601 are inserted into the corresponding positioning holes 501. When installing the stamping block 6, the operator only needs to initially align the positioning post 601 at the upper end of the stamping block 6 with the positioning hole 501 at the lower end of the connecting plate 5, and then close it in the vertical direction. As the end of the positioning post 601 naturally slides into the positioning hole 501, the precise clearance fit between the two provides accurate lateral limit for the entire stamping block 6, automatically completing the circumferential alignment between the stamping block 6 and the connecting plate 5, ensuring the parallel relationship between the working end face of the stamping block 6 and the lower bottom mold 3. The upper end of the sleeve 701 has an outwardly folded outer edge 707, and the outer side of the outer edge 707 is covered with a flexible outer shell 708; The extrusion block 704 includes a column 7041 and a baffle 7042 fixed to the lower end of the column 7041. The upper end of the column 7041 is formed with a tapered surface 7043 for contacting the ball 706. Two guide rods 8 are symmetrically arranged between the support frame 2 and the base 1. The two ends of the guide rods 8 are threaded to the support frame 2 and the base 1 respectively. A second spring 9 is sleeved on the outside of the guide rods 8. A side plate 10 is fixedly installed on the outer side of the connecting plate 5 by bolts. The side plate 10 has a sliding hole that matches the guide rod 8 and is slidably connected to the outer side of the guide rod 8 through the sliding hole. The upper end of the second spring 9 is fixedly connected to the lower end of the side plate 10 and the lower end is fixedly connected to the upper end of the base 1. When the cylinder 4 drives the connecting plate 5 and the stamping block 6 to perform the stamping operation downwards, the side plates 10 fixed on both sides of the connecting plate 5 slide down synchronously along the guide rod 8 and compress the second spring 9. During this process, the guide rod 8 provides precise vertical guidance for the entire movement, effectively preventing the stamping block 6 from shifting laterally or twisting, and ensuring its precise alignment with the bottom mold 3. When the cylinder 4 returns after stamping, the compressed second spring 9 releases its stored energy, and its restoring force pushes the connecting plate 5 and the stamping block 6 upwards through the side plate 10 to smoothly and quickly reset. This not only improves the stability and processing accuracy of stamping through rigid guidance, but also absorbs the impact energy at the end of the stamping by utilizing the buffering effect of the second spring 9.

[0019] In use, cylinder 4 drives connecting plate 5 to move downward. Side plates 10 fixed on both sides of connecting plate 5 slide precisely down guide rod 8 and compress second spring 9, ultimately causing stamping block 6 to close with bottom mold 3. This uses immense pressure to press and fold the chain teeth placed between them. After forming, cylinder 4 returns, and the compressed second spring 9 releases energy, assisting in smoothly resetting connecting plate 5 and stamping block 6. When it is necessary to replace worn stamping block 6, the operator first presses down on the lower pressing block 703 covered by flexible shell 708 at the upper end of sleeve 701, driving moving rod 702 to move downward against the elastic force of first spring 705, causing the lower pressing block 704 to move downward synchronously, so that its column 7041 no longer radially presses the ball 706. The ball 706 then passes through tapered surface 7043. The old stamping block 6 can be removed by retracting it into the sleeve 701, thereby releasing the lock on the mounting hole of the stamping block 6. Then, the new stamping block 6 is taken out, and its upper positioning post 601 is initially aligned with the positioning hole 501 at the lower end of the connecting plate 5. The mounting hole is then placed on the outside of the sleeve 701, which is already in the unlocked state. The lower pressing block 703 is released, and the restoring force of the first spring 705 immediately pushes the moving rod 702 and the pressing block 704 upward to reset. During the upward movement, the conical surface 7043 of the pressing block 704 pushes all the balls 706 in the through hole of the sleeve 701 outward and evenly, so that the balls 706 are tightly pressed against the inner wall of the mounting hole. The radial locking force instantly completes the precise positioning and firm fixation of the new stamping block 6, and the next stamping operation can be prepared.

[0020] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A metal zipper tooth stamping and bending die, comprising a base (1), wherein a support frame (2) and a bottom mold (3) are fixedly installed on the upper end of the base (1), a cylinder (4) is fixedly installed on the upper end of the support frame (2), the output end of the cylinder (4) passes through the support frame (2) and is mounted with a connecting plate (5), and a stamping block (6) is provided at the lower end of the connecting plate (5), characterized in that: A fixing structure (7) is provided between the connecting plate (5) and the stamping block (6); The fixing structure (7) includes a sleeve (701) threadedly connected to the connecting plate (5). The sleeve (701) has an axially opened placement groove and a sliding rod (702) is slidably connected inside. The upper end of the sliding rod (702) is fixedly connected to a lower pressure block (703), and the lower end of the sliding rod (702) is fixedly connected to a pressing block (704). The outer side of the moving rod (702) is fitted with a first spring (705), the upper end of the first spring (705) is fixedly connected to the lower pressure block (703), and the lower end is fixedly connected to the inner bottom of the placement groove; The sleeve (701) has multiple through holes on its outer side, and each through hole is provided with a ball (706). The peripheral side of the extrusion block (704) is in contact with the outer side of the ball (706). The upper end of the stamping block (6) is provided with a mounting hole that is adapted to the lower part of the sleeve (701), and the outer side of the ball (706) abuts against the inner wall of the mounting hole.

2. The metal zipper tooth stamping and bending die according to claim 1, characterized in that: The lower end of the connecting plate (5) is provided with at least two positioning holes (501), and the upper end of the stamping block (6) is fixedly provided with positioning posts (601) corresponding to the number and position of the positioning holes (501). The positioning posts (601) are inserted into the corresponding positioning holes (501).

3. The metal zipper tooth stamping and bending die according to claim 1, characterized in that: The upper end of the sleeve (701) has an outwardly folded outer edge (707), and the outer side of the outer edge (707) is covered with a flexible shell (708).

4. The metal zipper tooth stamping and bending die according to claim 1, characterized in that: The extrusion block (704) includes a column (7041) and a baffle (7042) fixed to the lower end of the column (7041). The upper end of the column (7041) is formed with a tapered surface (7043) for contacting the ball (706).

5. The metal zipper tooth stamping and bending die according to claim 1, characterized in that: Two guide rods (8) are symmetrically arranged between the support frame (2) and the base (1). The two ends of the guide rods (8) are threaded to the support frame (2) and the base (1) respectively. A second spring (9) is sleeved on the outside of the guide rods (8).

6. The metal zipper tooth stamping and bending die according to claim 5, characterized in that: A side plate (10) is fixedly installed on the outside of the connecting plate (5) by bolts. The side plate (10) has a sliding hole that matches the guide rod (8) and is slidably connected to the outside of the guide rod (8) through the sliding hole. The upper end of the second spring (9) is fixedly connected to the lower end of the side plate (10), and the lower end is fixedly connected to the upper end of the base (1).

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