Zipper processing technology and device

Abstract

According to the technical scheme, the zipper machining device is characterized by comprising an injection molding machine, a controller, an upper mold assembly and a lower mold assembly, the upper mold assembly and the lower mold assembly are both arranged on the injection molding machine, and a feeding gap allowing a cloth belt to penetrate through is reserved between the upper mold assembly and the lower mold assembly; the lower die assembly comprises a lower die base, a lower die plate and a first lifting part, the lower die plate is connected to the lower die base in a lifting mode, the first lifting part is used for driving the lower die plate to move up and down, grooves for allowing cloth belts to be inserted are formed in the two sides of the lower die plate in the width direction, and the cloth belts are conveyed in the length direction of the lower die plate; anti-pinch assemblies are arranged on the two sides of the lower die plate in the length direction and used for driving the cloth belt to move towards the two sides. Pushing assemblies are arranged on the two sides of the lower mold plate in the width direction, and the pushing assemblies are used for pushing the cloth belt to move towards the lower mold plate; the controller is used for sequentially controlling the first lifting piece, the anti-pinch assembly and the abutting and pushing assembly to operate. The zipper machining device can improve the zipper machining efficiency.

Description

Technical Field

[0001] This invention relates to the field of zipper manufacturing technology, and more specifically, to a zipper processing technology and apparatus. Background Technology

[0002] Zippers are common items in people's lives, mainly used in clothing, shoes, hats, and various bags. Zippers are usually composed of fabric tape, chain teeth, and a zipper pull. The chain teeth are arranged continuously on the edges of two fabric tapes. By sliding the zipper pull, the chain teeth on the two fabric tapes can be engaged or disengaged, thus achieving the function of opening and closing. In order to improve the waterproof and airproof effect when sealing, airtight zippers are used as sealing components.

[0003] An airtight zipper, as the name suggests, is a zipper that is both waterproof and airtight. It forms a sealed layer through the interlocking teeth of the zipper, preventing the flow of gas and liquid inside and outside the zipper.

[0004] Our company previously applied for a zipper production equipment and processing method with publication number CN112590113B. In this method, an upper injection mold and a lower injection mold are bonded together to form a mold, and then thermoplastic material is injected to form zipper teeth. The existing airtight zippers have the following problems in the manufacturing process: 1. During the conveying and fixing of the fabric tape, it may be clamped by the lower mold plate, which will affect the subsequent injection molding operation; 2. In order to avoid the occurrence of problem 1, the operator needs to make adjustments in real time, which will affect the production efficiency. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the present invention aims to provide a zipper processing technology and apparatus that can improve zipper processing efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a zipper processing device, comprising an injection molding machine, a controller, an upper mold assembly, and a lower mold assembly, wherein the upper mold assembly and the lower mold assembly are both mounted on the injection molding machine, and a feeding gap is provided between the upper mold assembly and the lower mold assembly for the fabric tape to pass through. The lower mold assembly includes a lower mold base, a lower template, and a first lifting component. The lower template is jackingly connected to the lower mold base. The first lifting component is used to drive the lower template to move up and down. Grooves for inserting a fabric strip are provided on both sides of the lower template in the width direction. The fabric strip is delivered along the length direction of the lower template. Anti-pinch components are provided on both sides of the lower template along its length. The anti-pinch components are used to drive the fabric belt to move to both sides. Pushing components are provided on both sides of the lower template in the width direction. The pushing components are used to push the fabric strip to move downward to the template. The controller is used to sequentially control the operation of the first lifting component, the anti-pinch component, and the pushing component.

[0007] The present invention is further configured such that: the anti-pinch component includes a second lifting member and a lifting block, the second lifting member is used to drive the lifting block to move up and down, the lifting block is located between the two fabric belts, and when the lifting block moves upward, it can push the two fabric belts to move to both sides from the middle.

[0008] The present invention is further configured such that: the pushing component includes a pushing block and a pushing member, the pushing member is installed on the upper mold component, and the pushing block is installed on the lower mold base; when the upper mold component moves downward, the pushing member pushes the pushing block to move in the direction of the lower mold plate.

[0009] The present invention is further configured such that: the push block is arranged in an L-shape, and a travel space is left between the push block and the lower mold base.

[0010] The present invention is further configured such that the pushing block is made of spring steel sheet.

[0011] The present invention is further configured to include a punching mechanism, a feeding mechanism, and a discharging mechanism, wherein the punching mechanism is disposed on the feeding side of the lower die assembly, and the feeding mechanism is disposed on the side of the punching mechanism away from the lower die assembly; The discharge mechanism is located on the side of the lower die assembly away from the punching mechanism.

[0012] The present invention is further configured such that: a traction mechanism is provided between the feeding mechanism and the punching mechanism, the traction mechanism being used to pull the fabric belt to move towards the feeding mechanism.

[0013] A zipper processing device has the following processing steps: S1, the lower template moves down to fix the fabric strip to the lower mold base, the upper mold assembly moves down to form an injection space with the lower template, and plastic is injected into the injection space by an injection molding machine to form zipper teeth; S2, the upper mold assembly and the lower mold plate move upward in sequence, contacting the restrictive effect on the fabric tape; S3, the anti-pinch component moves upward, causing the two fabric strips to move to the sides, and then the two fabric strips move forward one unit distance; S4, the pushing component pushes the fabric belt into the groove; S5, repeat steps S1-S4.

[0014] A zipper processing device includes the following steps: A1, the feeding mechanism drives the fabric to move to the punching station of the punching mechanism and the injection station of the injection molding machine. The fabric strip includes a punching section, a middle section and an injection section of equal length in sequence. The punching section is located at the punching station and the injection section is located at the injection station. A2, the lower mold plate moves down to fix the fabric strip to the lower mold base, the upper mold assembly moves down to form an injection space with the lower mold plate, and plastic is injected into the injection space by the injection molding machine to form chain teeth; A3, the upper mold assembly and the lower mold plate move upward in sequence, contacting the restrictive effect on the fabric tape; A4, the anti-pinch component moves upward, causing the two fabric belts to move to both sides, and then the discharge mechanism drives the fabric belt to move forward one unit distance, the length of the unit distance is greater than or equal to the length of the injection molding section; A5, the pusher component pushes the fabric belt into the groove; A6, repeat steps A1-A5.

[0015] The present invention is further configured such that step A4 also includes: A41, the traction mechanism pulls the fabric belt backward until the chain teeth abut against the lower template.

[0016] In summary, the present invention has the following beneficial effects: after a single injection molding operation is completed, the upper mold assembly and the lower mold assembly are separated first, and then the lower mold plate is moved upward by the first lifting component, so that the chain teeth that have completed the injection are separated from the injection cavity on the lower mold base, thereby ensuring that the fabric belt moves without obstruction. When the lower part of the fabric belt moves to the designated area, the fabric belt is separated to both sides by the anti-pinch component. Subsequently, during the downward movement of the lower mold plate, the fabric belt will not be clamped, thereby ensuring the effectiveness of the process.

[0017] Furthermore, after the template moves down, the pushing component pushes the fabric strips on both sides into the groove, thereby ensuring that the gaps between the formed chain teeth are tight and that the seal is guaranteed. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the zipper processing device; Figure 2 A three-dimensional structural diagram of a zipper injection molding device; Figure 3 This is a three-dimensional structural diagram showing the positions of the upper and lower mold components.

[0019] Reference numerals in the attached drawings: 1. Injection molding machine; 2. Controller; 3. Upper mold assembly; 4. Lower mold assembly; 41. Lower mold base; 42. Lower mold plate; 5. Anti-pinch assembly; 6. Pushing assembly; 61. Pushing block; 62. Pushing component; 7. Punching mechanism; 71. Feeding mechanism; 72. Discharging mechanism; 8. Traction mechanism. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Reference Figures 1 to 3 As shown, to achieve the above objectives, the present invention provides the following technical solution: a zipper processing device, including an injection molding machine 1, a controller 2, an upper mold assembly 3, and a lower mold assembly 4. The upper mold assembly 3 and the lower mold assembly 4 are both mounted on the injection molding machine 1, and a feeding gap is provided between the upper mold assembly 3 and the lower mold assembly 4 for the fabric tape to pass through. The upper mold assembly and the lower mold assembly are both provided with injection mold cavities for forming zipper teeth.

[0022] The lower mold assembly 4 includes a lower mold base 41, a lower template 42 and a first lifting member. The lower template 42 is scissor-connected to the lower mold base 41. The first lifting member is used to drive the lower template 42 to move up and down. The lower template 42 has grooves on both sides in the width direction for inserting the fabric strip. The fabric strip is delivered along the length direction of the lower template 42. Anti-pinch components 5 are provided on both sides of the lower template 42 along its length. The anti-pinch components 5 are used to drive the fabric belt to move to both sides. Pushing components 6 are provided on both sides of the lower template 42 in the width direction. The pushing components 6 are used to push the fabric strip to move down the template 42. The controller 2 is used to control the operation of the first lifting component, the anti-pinch component 5, and the pushing component 6 in sequence.

[0023] In this invention, after a single injection molding operation is completed, the upper mold assembly 3 and the lower mold assembly 4 are first separated. Then, the lower mold plate 42 is moved upward by the first lifting component, so that the chain teeth that have completed the injection are separated from the injection cavity on the lower mold base 41, thereby ensuring that the fabric belt moves without obstruction. When a portion of the fabric belt moves to the designated area, the anti-pinch component 5 separates the fabric belt to both sides. Subsequently, during the downward movement of the lower mold plate 42, the fabric belt will not be pinched, thereby ensuring the effectiveness of the process.

[0024] Furthermore, after the template 42 moves down, the pusher component 6 pushes the fabric strips on both sides into the groove, thereby ensuring that the gap between the formed chain teeth is tight and that the seal is guaranteed.

[0025] The present invention is further configured such that the anti-pinch component 5 includes a second lifting member and a lifting block. The second lifting member is used to drive the lifting block to move up and down. The lifting block is located between the two fabric belts. When the lifting block moves upward, it can push the two fabric belts to move to both sides from the middle.

[0026] The second lifting component, the first lifting component, and other lifting components controlling the lifting of the upper mold assembly 3 mentioned above all employ suitable cylinders or electric lifting rods, depending on the application. These lifting methods are all existing technologies and will not be elaborated upon here.

[0027] The lower mold base 41 is provided with two sets of lifting grooves, which are located at the center of both ends of the lower template 42. The lifting block is slidably connected in the lifting groove. With this structure, when the lifting block is pushed out from the middle of the two fabric strips, the two fabric strips can be flipped outward, thereby causing the fabric strips between the two ends to separate from the lower template 42, thus achieving the anti-pinch effect.

[0028] The present invention is further configured such that: the pushing component 6 includes a pushing block 61 and a pushing member 62, the pushing member 62 is installed on the upper mold component 3, and the pushing block 61 is installed on the lower mold base 41. When the upper mold component 3 moves downward, the pushing member 62 pushes the pushing block 61 to move towards the lower mold plate 42.

[0029] As the upper mold assembly 3 moves downward, the pusher 62 and the outer side of the pusher block 61 abut together. The advantage of this structural design is that when injection molding is about to begin, the pusher 62 can abut against the pusher block 61 first, thereby ensuring that the fabric strip can be pushed into the groove.

[0030] The invention is further configured such that: the push block 61 is arranged in an L-shape, and a travel space is left between the push block 61 and the lower mold base 41. The push block 61 is made of spring steel sheet. When the push member 62 pushes the push block 61, the connection position between the push block 61 and the lower mold base 41 deforms, thereby causing the upper part to move forward. When the push member 62 moves upward, the push block 61 returns to its original position.

[0031] In addition to this embodiment, the push block 61 can also be movably connected to the lower mold base 41 by means of a return spring, etc. For example, the lower mold base 41 is provided with a sliding groove, and the push block 61 is provided with a sliding rod. The sliding rod is slidably connected to the sliding groove by a return spring. When the push member 62 pushes the push block 61, the return spring is compressed. When the push member 62 returns to its original position, the push block 61 returns to its original position under the action of the return spring.

[0032] The present invention is further configured to include a punching mechanism 7, a feeding mechanism 71, and a discharging mechanism 72. The punching mechanism 7 is located on the feeding side of the lower die assembly 4, and the feeding mechanism 71 is located on the side of the punching mechanism 7 away from the lower die assembly 4. The discharge mechanism 72 is located on the side of the lower die assembly 4 away from the punching mechanism 7.

[0033] by Figure 1For example, the feeding mechanism 71 and the discharging mechanism 72 can convey the fabric belt from left to right, performing punching and injection molding operations sequentially. This has the following advantages: punching and injection molding are integrated, eliminating the need for manual transfer and secondary positioning, improving work efficiency, reducing manual labor, and avoiding the impact of human or environmental factors on the fabric belt, thus improving processing accuracy and ensuring zipper production quality.

[0034] The present invention is further configured such that a traction mechanism 8 is provided between the feeding mechanism 71 and the punching mechanism 7, and the traction mechanism 8 is used to pull the fabric belt to move towards the feeding mechanism 71.

[0035] The traction mechanism 8 can perform a reset operation after completing a single punching and injection molding operation, thereby reducing errors. The specific operation steps are as follows: Example 1: A zipper processing device processing technology includes the following steps: A1, the material discharge mechanism 72 drives the fabric to the punching station position of the punching mechanism 7 and the injection molding station position of the injection molding machine 1. The fabric belt includes a punching section, a middle section and an injection molding section of equal length in sequence. The punching section is located at the punching station position and the injection molding section is located at the injection molding station position. The stamping length of the stamping die, the injection length of the injection mold, and the distance between the two are all the same, or the distance between the two is twice the stamping length.

[0036] A2, the lower template 42 moves down to fix the fabric strip to the lower mold base 41, the upper mold assembly 3 moves down to form an injection space with the lower template 42, and plastic is injected into the injection space by the injection molding machine 1 to form chain teeth; A3, the upper mold assembly 3 and the lower mold plate 42 move upward in sequence, contacting the restrictive effect on the fabric tape; A4, the anti-pinch component 5 moves upward, causing the two fabric belts to move to both sides. Then the discharge mechanism 72 drives the fabric belt to move forward one unit distance, and the length of the unit distance is greater than or equal to the length of the injection molding section. A5, the pushing component 6 pushes the fabric belt into the groove; A6, repeat steps A1-A5.

[0037] Step A4 also includes: A41, the traction mechanism 8 pulls the fabric belt backward until the chain teeth abut against the lower template 42.

[0038] In step S41 above, each time the chain teeth abut against the lower template 42 under the action of the traction mechanism 8, the injection section and the punching section can be located at the corresponding injection station position and punching station position, reducing the positional deviation caused by the discharge mechanism 72 and ensuring the stability of production.

[0039] Note that the chain teeth can abut against the lower template 42 in the raised state.

[0040] Example 2: A processing technology for a zipper processing device includes the following steps: S1, the lower template 42 moves down to fix the fabric strip to the lower mold base 41, the upper mold assembly 3 moves down to form an injection space with the lower template 42, and plastic is injected into the injection space by the injection molding machine 1 to form zipper teeth; S2, the upper mold assembly 3 and the lower mold plate 42 move upward in sequence, contacting the restrictive effect on the fabric belt; S3, the anti-pinch component 5 moves upward, causing the two fabric strips to move to both sides, and then the two fabric strips move forward one unit distance; S4, the pushing component 6 pushes the fabric belt into the groove; S5, repeat steps S1-S4.

[0041] Furthermore, the feeding mechanism 71 can be a cylindrical rod, on which bundles of fabric strips to be operated are mounted. The discharging mechanism 72 is based on the feeding mechanism 71, with an added motor that drives the fabric strips to move. The feeding mechanism 71, the discharging mechanism 72, and the punching mechanism 7 are all existing technologies and will not be described in detail here.

[0042] Furthermore, the traction mechanism 8 consists of a traction plate and a traction motor located between the feeding mechanism 71 and the punching mechanism 7. The traction motor drives the traction plate to rotate, causing the traction plate to pull the fabric belt towards the feeding mechanism 71, thereby straightening the latter half of the fabric belt.

[0043] The punching mechanism includes a lower punching die, an upper punching die, and a punching drive assembly. During punching, when the fabric strip is placed between the lower punching die and the upper punching die, the punching drive assembly can drive the upper punching die to move downward, so that the upper punching die and the lower punching die fit together to form a closed die. At the same time, the punch will pass through the fabric strip and enter the die hole, thereby realizing the punching of the fabric strip. After punching is completed, the punching drive assembly can drive the upper punching die to move upward, and the upper punching die and the lower punching die separate.

[0044] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A zipper processing device, comprising an injection molding machine (1), a controller (2), an upper mold assembly (3), and a lower mold assembly (4), wherein the upper mold assembly (3) and the lower mold assembly (4) are both disposed on the injection molding machine (1), and a feeding gap is provided between the upper mold assembly (3) and the lower mold assembly (4) for the fabric tape to pass through; Its characteristics are: The lower mold assembly (4) includes a lower mold base (41), a lower template (42) and a first lifting member. The lower template (42) is jackingly connected to the lower mold base (41). The first lifting member is used to drive the lower template (42) to move up and down. The lower template (42) has grooves for inserting a fabric strip on both sides in the width direction. The fabric strip is delivered along the length direction of the lower template (42). Anti-pinch components (5) are provided on both sides of the lower template (42) along its length. The anti-pinch components (5) are used to drive the fabric belt to move to both sides. Pushing components (6) are provided on both sides of the lower template (42) in the width direction. The pushing components (6) are used to push the fabric strip to move to the lower template (42). The controller (2) is used to control the operation of the first lifting component, the anti-pinch component (5), and the pushing component (6) in sequence.

2. The zipper processing device according to claim 1, characterized in that: The anti-pinch component (5) includes a second lifting member and a lifting block. The second lifting member is used to drive the lifting block to move up and down. The lifting block is located between the two fabric belts. When the lifting block moves upward, it can push the two fabric belts to move to both sides from the middle.

3. The zipper processing device according to claim 1, characterized in that: The pushing component (6) includes a pushing block (61) and a pushing member (62). The pushing member (62) is installed on the upper mold component (3), and the pushing block (61) is installed on the lower mold base (41). When the upper mold component (3) moves down, the pushing member (62) pushes the pushing block (61) to move towards the lower mold plate (42).

4. The zipper processing device according to claim 3, characterized in that: The push block (61) is arranged in an L-shape, and there is a travel space between the push block (61) and the lower mold base (41).

5. A zipper processing device according to claim 4, characterized in that: The push block (61) is made of spring steel sheet.

6. A zipper processing apparatus according to any one of claims 1 to 5, characterized in that: It also includes a punching mechanism (7), a feeding mechanism (71), and a discharging mechanism (72). The punching mechanism (7) is located on the side where the lower die assembly (4) feeds, and the feeding mechanism (71) is located on the side of the punching mechanism (7) away from the lower die assembly (4). The discharge mechanism (72) is located on the side of the lower die assembly (4) away from the punching mechanism (7).

7. A zipper processing device according to claim 6, characterized in that: A traction mechanism (8) is provided between the feeding mechanism (71) and the punching mechanism (7), and the traction mechanism (8) is used to pull the fabric belt to move towards the feeding mechanism (71).

8. A processing method based on the zipper processing device of claim 1, characterized in that: The process includes the following steps: S1, the lower template (42) moves down to fix the fabric strip to the lower mold base (41), the upper mold assembly (3) moves down to form an injection space with the lower template (42), and plastic is injected into the injection space through the injection molding machine (1) to form chain teeth; S2, the upper mold assembly (3) and the lower mold plate (42) move upward in sequence, contacting the restrictive effect on the fabric belt; S3, the anti-pinch component (5) moves upward, causing the two fabric strips to move to both sides, and then the two fabric strips move forward one unit distance; S4, the pushing component (6) pushes the fabric belt into the groove; S5, repeat steps S1-S4.

9. A processing method based on the zipper processing device of claim 7, characterized in that: The process includes the following steps: A1, the material discharge mechanism (72) moves the fabric to the punching station of the punching mechanism (7) and the injection station of the injection molding machine (1). The fabric includes a punching section, a middle section and an injection section of equal length. The punching section is located at the punching station and the injection section is located at the injection station. A2, the lower template (42) moves down to fix the fabric strip to the lower mold base (41), the upper mold assembly (3) moves down to form an injection space with the lower template (42), and plastic is injected into the injection space through the injection molding machine (1) to form chain teeth; A3, the upper mold assembly (3) and the lower mold plate (42) move upward in sequence, contacting the restrictive effect on the fabric tape; A4, the anti-pinch component (5) moves upward, causing the two fabric belts to move to both sides, and then the discharge mechanism (72) drives the fabric belt to move forward by one unit distance, the length of the unit distance being greater than or equal to the length of the injection molding section; A5, the push assembly (6) pushes the fabric belt into the groove; A6, repeat steps A1-A5.

10. A zipper processing technology according to claim 9, characterized in that: Step A4 also includes: A41, the traction mechanism (8) pulls the fabric belt backward until the chain teeth abut against the lower template (42).

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