Zipper tooth injection molding device

Abstract

The zipper tooth injection molding device comprises a first clamping mechanism, a fixed-length feeding mechanism, a second clamping mechanism, an injection molding mechanism and a discharging mechanism which are sequentially arranged in the advancing direction of a zipper belt, the fixed-length feeding mechanism comprises a frame body, a sliding block, a first air cylinder and a first feeding roller, the sliding block is arranged on the frame body in a sliding mode, and the first air cylinder is arranged on the first feeding roller. The first air cylinder is arranged at the upper end of the frame body and used for pushing the sliding block to move downwards, the first feeding roller is rotationally arranged at the lower end of the sliding block, and the chain belt bypasses the lower end of the first feeding roller. The injection molding machine has the advantages that the fixed-length feeding mechanism is arranged, fixed-length feeding of the chain belt can be synchronously carried out during injection molding of the injection molding mechanism, after injection molding of the injection molding mechanism is completed and the first clamping mechanism is closed, the discharging mechanism only needs to rapidly discharge till the chain belt cannot be pulled, the injection molding efficiency is high, and the chain belt feeding precision is high.

Description

Technical Field

[0001] This utility model relates to the field of zipper production equipment technology, and in particular to a zipper tooth injection molding device. Background Technology

[0002] In the zipper manufacturing process, nylon or polyester zipper teeth are typically injection molded onto the zipper belt. However, the injection mold length is limited, while the zipper belt length is much greater. Therefore, multiple injections are required on the zipper belt during injection. Each injection requires a precise amount of pulling on the zipper belt to ensure a seamless connection of the molded teeth. To ensure accuracy, the speed of pulling the zipper belt each time cannot be too fast, which to some extent affects the zipper injection efficiency. Summary of the Invention

[0003] This invention mainly solves the above-mentioned problems and provides a chain tooth injection molding device that can quickly pull the chain without affecting the accuracy of the chain's forward length.

[0004] The technical solution adopted by this utility model to solve its technical problem is a chain tooth injection molding device, which includes a first clamping mechanism, a fixed-length feeding mechanism, a second clamping mechanism, an injection molding mechanism and a discharge mechanism arranged sequentially along the forward direction of the chain belt. The fixed-length feeding mechanism includes a frame, a slider, a first cylinder and a first feeding roller. The slider is slidably disposed on the frame. The first cylinder is disposed at the upper end of the frame to push the slider downward. The first feeding roller is rotatably disposed at the lower end of the slider. The chain belt passes around the lower end of the first feeding roller.

[0005] As a preferred embodiment of the above solution, a second feeding roller and a third feeding roller are respectively provided on both sides of the fixed-length feeding mechanism, and the second feeding roller and the third feeding roller are set at the same height as the first clamping mechanism and the injection molding mechanism.

[0006] As a preferred embodiment of the above solution, the frame includes a base plate and a top plate, a vertical slide bar is provided between the base plate and the top plate, the slider is slidably mounted on the vertical slide bar, and the first cylinder is fixedly mounted on the top plate.

[0007] As a preferred embodiment of the above solution, the first clamping mechanism includes a first base plate and a first clamping block, the first clamping block being driven to rise and fall by a second cylinder.

[0008] As a preferred embodiment of the above solution, the injection molding mechanism includes a lower mold and an upper mold, and the second clamping mechanism includes a second base plate and a second clamping block. The second base plate is fixedly disposed on the side of the lower mold facing the fixed-length feeding mechanism, and the second clamping block is fixedly disposed on the side of the upper mold facing the fixed-length feeding mechanism.

[0009] As a preferred embodiment of the above solution, the first feed roller, the second feed roller and the third feed roller are provided with two limiting grooves for limiting the chain belt.

[0010] As a preferred embodiment of the above solution, the discharge mechanism includes a lower discharge roller and two upper discharge rollers. The lower discharge roller has a groove in the middle, and the upper discharge rollers are located above the two ends of the lower discharge roller.

[0011] The advantages of this utility model are: it is equipped with a fixed-length feeding mechanism that can simultaneously feed the chain at a fixed length during the injection molding process. After the injection molding is completed and the first clamping mechanism closes, the discharge mechanism only needs to discharge quickly until the chain can no longer be pulled. The injection efficiency is high and the chain feeding accuracy is high. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the chain tooth injection molding device.

[0013] Figure 2 This is a schematic diagram of the structure of the first feed roller.

[0014] Figure 3 This is a schematic diagram of the material discharge mechanism.

[0015] 1-First clamping mechanism 2-Second feeding roller 3-Fixed length feeding mechanism 4-Third feeding roller 5-Injection molding mechanism 6-Discharge mechanism 7-Chain belt 8-Limiting groove 9-Chain tooth 10-Sprue material 31-Base plate 32-Top plate 33-First cylinder 34-Slider 35-First feeding roller 36-Vertical slide bar 51-Lower mold 52-Upper mold 53-Second clamping block 54-Second base plate 61-Lower discharge roller 62-Upper discharge roller 63-Groove Detailed Implementation

[0016] The technical solution of this utility model will be further described below through embodiments and in conjunction with the accompanying drawings.

[0017] Example:

[0018] This embodiment describes a chain tooth injection molding device, such as... Figure 1 As shown, the device includes a first clamping mechanism 1, a fixed-length feeding mechanism 3, a second clamping mechanism, an injection molding mechanism 5, and a discharge mechanism 6 arranged sequentially along the forward direction of the chain belt 7. The fixed-length feeding mechanism 3 is provided with a second feeding roller 2 and a third feeding roller 4 on both sides, and the second feeding roller 2 and the third feeding roller 4 are arranged at the same height as the first clamping mechanism 1 and the injection molding mechanism 5.

[0019] The first clamping mechanism 1 includes a first base plate and a first clamping block, which is driven to move up and down by a second cylinder. In this embodiment, the chain 7 should enter the first clamping mechanism in a taut state. When the first clamping block closes with the first base plate, the chain can be clamped and fixed to prevent it from being pulled.

[0020] The fixed-length feeding mechanism includes a frame, a slider 34, a first cylinder 33, and a first feeding roller 35. The frame includes a base plate 31 and a top plate 32. A vertical slide bar 36 is provided between the base plate 31 and the top plate 32. The slider 34 is slidably mounted on the vertical slide bar 36. The first cylinder 33 is fixedly mounted on the top plate 32 to push the slider 34 downward. The first feeding roller 35 is rotatably mounted at the lower end of the slider 34, and the chain belt 7 passes around the lower end of the first feeding roller 35. In this embodiment, the first feeding roller, the second feeding roller, and the third feeding roller have the same structure. Taking the first feeding roller as an example... Figure 2 As shown, the first feed roller has two limiting grooves 8 on its body to limit the movement of the chain belt.

[0021] The injection molding mechanism 5 includes a fixed lower mold 51 and a movable upper mold 52. The second clamping mechanism includes a second base plate 54 and a second clamping block 53. The second base plate 54 is fixedly disposed on the side of the lower mold 51 facing the fixed-length feeding mechanism, and the second clamping block 53 is fixedly disposed on the side of the upper mold facing the fixed-length feeding mechanism.

[0022] like Figure 3 As shown, the discharge mechanism 6 includes a lower discharge roller 61 and two upper discharge rollers 62. The lower discharge roller 61 has a groove 63 in the middle, and the upper discharge rollers 62 are located above both ends of the lower discharge roller 61. After injection molding, the lower discharge roller and the two upper discharge rollers cooperate to clamp the outer sides of the two chain belts, driving the chain belts to move forward. The chain teeth 9 and sprue 10 formed on the chain belts after injection molding are located in the gap between the groove 53 and the two upper discharge rollers 62.

[0023] The working principle of the chain tooth injection device in this embodiment is as follows: the injection mechanism 5 injects chain teeth into the chain belt 7. During the injection process, the second clamping mechanism closes and the first clamping mechanism 1 separates. At the same time, the first cylinder 33 pushes the slider 34 down. During the downward movement, the chain belt on the left is pulled into the space between the second feed roller 2 and the third feed roller 4. Since the extension of the first cylinder is consistent each time and the chain belt 7 is in a taut state when it enters the first clamping mechanism 1, the feed amount of the chain belt is also consistent each time the first cylinder pushes the slider. By adjustment, the feed amount of the chain belt can be made consistent with the length of the injection mold. After that, the first addition mechanism closes and the first cylinder retracts. After the injection molding mechanism completes the injection molding, the second clamping mechanism separates, and the first addition mechanism continues to close. The discharge mechanism 6 drives the chain belt 7 to move from left to right. During the movement of the chain belt, the slider 34 rises under the action of the chain belt tension until it abuts against the first cylinder. After the slider 34 abuts against the first cylinder, the discharge mechanism 6 can no longer drive the chain belt to move horizontally. At this time, the chain belt of the injection molding chain teeth just leaves the injection molding mechanism. After the injection molding mechanism injects again, the chain teeth of the two injections can be seamlessly connected.

[0024] The specific embodiments described herein are merely illustrative of the spirit of the 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 substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A chain tooth injection molding device, characterized in that: The device includes a first clamping mechanism, a fixed-length feeding mechanism, a second clamping mechanism, an injection molding mechanism, and a discharge mechanism arranged sequentially along the forward direction of the chain belt. The fixed-length feeding mechanism includes a frame, a slider, a first cylinder, and a first feeding roller. The slider is slidably mounted on the frame. The first cylinder is mounted on the upper end of the frame to push the slider downward. The first feeding roller is rotatably mounted on the lower end of the slider. The chain belt passes around the lower end of the first feeding roller.

2. The chain tooth injection molding device according to claim 1, characterized in that: The fixed-length feeding mechanism is provided with a second feeding roller and a third feeding roller on both sides, and the second feeding roller and the third feeding roller are set at the same height as the first clamping mechanism and the injection molding mechanism.

3. The chain tooth injection molding device according to claim 1, characterized in that: The frame includes a base plate and a top plate, with a vertical slide bar between the base plate and the top plate. The slider is slidably mounted on the vertical slide bar, and the first cylinder is fixedly mounted on the top plate.

4. The chain tooth injection molding device according to claim 1, characterized in that: The first clamping mechanism includes a first base plate and a first clamping block, which is driven to rise and fall by a second cylinder.

5. The chain tooth injection molding device according to claim 1, characterized in that: The injection molding mechanism includes a lower mold and an upper mold. The second clamping mechanism includes a second base plate and a second clamping block. The second base plate is fixedly disposed on the side of the lower mold facing the fixed-length feeding mechanism, and the second clamping block is fixedly disposed on the side of the upper mold facing the fixed-length feeding mechanism.

6. The chain tooth injection molding device according to claim 2, characterized in that: The first, second, and third feed rollers are provided with two limiting grooves on their roller bodies to limit the movement of the chain belt.

7. The chain tooth injection molding device according to claim 1, characterized in that: The discharge mechanism includes a lower discharge roller and two upper discharge rollers. The lower discharge roller has a groove in the middle, and the upper discharge rollers are located above the two ends of the lower discharge roller.

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