Zipper production apparatus

Abstract

The present application provides a zipper production equipment, including a feeding mechanism for feeding the zipper tape and the zipper chain to the sewing table, the sewing table, a collecting device, the sewing table is further provided with a cutting device, the sewing device and the cutting device are controlled by a control element, the control element controls the cutting device to cut the zipper chain after the sewing device sews a set number of stitches; the present application adds the cutting device on the zipper sewing device, under the control of the control element, the cutting device cuts the zipper chain after the sewing device sews a certain number of stitches, then the collecting device keeps pulling the zipper tape to move, the sewing device continues to sew, forming the tape head, so that the zipper code tape can form the zipper chain and the tape head with fixed length in the sewing process, without the need for later tooth removal and size setting, saving materials and improving production efficiency.

Description

Technical Field

[0001] This invention relates to the field of zipper technology, specifically a zipper production equipment. Background Technology

[0002] Zippers are commonly used for opening and closing products, widely used in various bags, clothing, and shoes. Current nylon zippers consist of two zipper tapes and two joined zipper chains sewn together with thread. During this process, the sewing machine continuously sews, and as long as the spiral chain and zipper tape remain unbroken, the zipper will continue sewing until a basket is full. The technical term for this is "code tape." Code tape has two uses: one is for making strips, and the other is for making rolls. Rolls are dyed and then numbered to a certain length to form a roll.

[0003] Strip zippers are zippers made from code tape to the required length. In the process of making strip zippers, there is a step called tooth removal and sizing, which means that a certain length of teeth are punched off from the shaped code tape at a certain length end to leave room for sewing or installing the zipper head. This part is called the tape head. The total length of a zipper is the sum of the tape head length (including the front and back tape heads) and the zipper chain length. For the same model of zipper, the chain length may vary, but the tape head length generally remains the same.

[0004] However, the tape produced in the above steps has a certain length of teeth punched off during the tooth removal and sizing process, resulting in material loss and a rather cumbersome process. Therefore, the applicant has been exploring during the production process and hopes to develop a zipper production equipment that can reserve the tape head when producing the tape, avoid material loss caused by tooth removal and sizing in the later stage, and also improve production efficiency. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide a zipper production equipment. The technical solution adopted by this invention is as follows:

[0006] A zipper production device includes a feeding mechanism for conveying zipper tape and zipper chain to a sewing table, a sewing table, and a collecting device. The sewing table is equipped with a sewing device for sewing the zipper chain and zipper tape. The collecting device is used to pull the sewn zipper tape. The sewing table is also equipped with a cutting device. Both the sewing device and the cutting device are controlled by a control element. The control element controls the cutting device to cut the zipper chain after the sewing device has sewn a set number of stitches.

[0007] Preferably, the feeding mechanism includes a chain conveyor and a zipper belt conveyor, wherein the zipper chain is conveyed to the sewing table via the chain conveyor; the chain conveyor is a gear structure, and its tooth pitch is equal to that of the zipper chain.

[0008] Preferably, the chain conveyor device cooperates with the zipper belt conveyor device to ensure that the zipper chain does not overlap with the zipper belt below the cutting device.

[0009] Preferably, the zipper belt conveyor includes two rollers located on both sides of the chain conveyor, the two rollers respectively transport two zipper belts, and the zipper chain is conveyed between the two zipper belts through the chain conveyor.

[0010] Preferably, the feeding mechanism and the collecting device are located on opposite sides of the sewing table, the sewing device is located on the sewing table near the collecting device, and the cutting device is located on the sewing table near the feeding mechanism.

[0011] Preferably, the sewing table includes an upper pressure plate and a lower pressure plate, and the zipper tape is located between the upper pressure plate and the lower pressure plate. Specifically, the upper pressure plate and the lower pressure plate cooperate to form a first channel for limiting the zipper tape, and a conveying groove is also provided between the upper pressure plate and the lower pressure plate. The zipper chain is conveyed to the two zipper tapes through the conveying groove. The conveying groove is located on the upper end face of the lower pressure plate, and the inlet end of the conveying groove corresponds to and is close to the chain conveying device.

[0012] Preferably, the suturing device includes a needle bar, a suture needle, and a needle bar lifting structure for controlling the needle bar. The suture needle is mounted on the needle bar, and the needle bar lifting structure is electrically connected to a control element. The cutting device includes a cutter and a lifting rod connected to the cutter. The lifting rod is electrically connected to a control element. The conveying groove is located below the cutting device, and a groove or through hole is provided at the position corresponding to the cutter. When the cutting device cuts down, the cutter extends into the groove or through hole.

[0013] Preferably, the collecting device includes a take-up wheel for pulling the zipper code tape. The zipper code tape is located between two take-up wheels. The relative rotation of the two take-up wheels pulls the zipper code tape to move. The zipper sewing device drives the sewing needle to sew up and down once. The take-up wheel rotates at a certain angle, causing the chain to move one tooth pitch.

[0014] When the cutter rises, the chain conveyor synchronizes with the needle bar of the zipper needle, feeding one zipper tooth for each stitch. The zipper chain and zipper tape are fed into the needle position and sewn together through the upper and lower pressure plates and the conveyor groove. When the cutter descends and cuts the zipper chain, the gear structure stops feeding the zipper chain, that is, the current cycle stops until a certain period of time before it starts feeding the zipper chain again.

[0015] The beneficial effects of the present invention are as follows: The present invention adds a cutting device to the zipper sewing device. Under the control of the control element, the cutting device cuts the zipper chain after the sewing device has sewn a certain number of stitches. During this process, the collecting device keeps the zipper tape moving and forming a tape head, so that the zipper tape can leave a tape head of a fixed length during the sewing process, without the need for later tooth removal and sizing, saving materials and improving production efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of the present invention.

[0017] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1;

[0018] Figure 2 This is a side view of embodiment 1;

[0019] Figure 3 This is a partial structural diagram of Embodiment 1;

[0020] Figure 4 This is a top view of the sewing table in Embodiment 1;

[0021] Figure 5 This is a schematic diagram of the zipper code tape structure produced in Example 1 of this embodiment; Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0023] It should be noted that all uses of "first" and "second" in the embodiments of the present invention are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of the present invention. Subsequent embodiments will not explain this in detail.

[0024] The directional and positional terms used in this invention, such as "up," "down," "front," "back," "left," "right," "inner," "outer," "top," "bottom," and "side," are merely for reference to the accompanying drawings. Therefore, the directional and positional terms used are for illustrating and understanding this invention, and not for limiting the scope of protection of this invention.

[0025] Example 1

[0026] like Figure 1-4 As shown, a zipper production equipment includes a feeding mechanism for conveying zipper tape and zipper chain to a sewing table 1, a sewing table 1, and a collecting device 2. The sewing table 1 is equipped with a sewing device 3 for sewing zipper chain 5 and zipper tape 6 together. The collecting device 2 is used to pull the sewn zipper tape 13. The sewing table 1 is also equipped with a cutting device 4. Both the sewing device 3 and the cutting device 4 are controlled by a control element. The control element controls the cutting device 4 to cut the zipper chain 5 after the sewing device 3 has sewn a set number of stitches (or sewn for a certain period of time). During production, after the zipper chain 5 is cut, the feeding mechanism continues to convey the zipper tape, and the sewing device continues to sew. However, the zipper tape fed after the zipper chain 5 is cut is no longer sewn into the zipper chain 5, forming a tape head. Afterward, the feeding of the zipper chain 5 is controlled manually or automatically to start the production of the next zipper segment.

[0027] The feeding mechanism includes a chain conveyor 71 and a zipper belt conveyor 72. The zipper chain 5 is conveyed to the sewing table 1 through the chain conveyor 71. The chain conveyor 71 cooperates with the zipper belt conveyor 72 to ensure that the zipper chain 5 does not overlap with the zipper belt 4 below the cutting device 4. The zipper belt conveyor 72 includes two rollers located on both sides of the chain conveyor 71. The two rollers respectively transport two zipper belts 6, and the zipper chain 5 is conveyed between the two zipper belts 6 through the chain conveyor 71.

[0028] The feeding mechanism and the collecting device 2 are located on both sides of the sewing table 1, the sewing device 3 is set on the sewing table 1 near the collecting device 2, and the cutting device 4 is set on the sewing table 1 near the feeding mechanism.

[0029] The chain conveying device 71 is a gear structure, and its tooth pitch is equal to that of the zipper chain 5. The sewing table 1 includes an upper pressure plate 8 and a lower pressure plate 9. The zipper belt 4 is located between the upper pressure plate 8 and the lower pressure plate 9, and a conveying groove 51 is also provided between the upper pressure plate 8 and the lower pressure plate 9. The zipper chain 4 is conveyed to the space between the two zipper belts 4 through the conveying groove 51. In this device, specifically, the upper pressure plate 8 is slightly shorter than the lower pressure plate 9, and the upper pressure plate 8 has baffles on both sides. The baffle, together with the lower pressure plate 9, forms a first channel for limiting the zipper strap 4, so that the two zipper straps 4 gradually come together and become parallel after entering the sewing table 1, so as to sew them together; the conveying groove 51 is set on the upper end face of the lower pressure plate 9, and its position corresponds to and is close to the chain conveying device 71, so that the chain conveying device 71 sends the zipper chain 4 into the conveying groove 51 and into the space between the upper pressure plate 8 and the lower pressure plate 9; the upper pressure plate 8 is provided with a needle hole for the needle bar to pass through, and the position of the needle hole is the sewing position.

[0030] The portion of the lower pressure plate 9 that is longer than the upper pressure plate 8 is exposed and located below the cutting device 4. The cutting device 4 includes a cutter 41 and a lifting rod 42 connected to the cutter 41. The lifting rod 42 is electrically connected to a control element. The conveying groove 51 is provided with a through hole 52 located below the cutter 41, so that the cutter can extend into it when cutting.

[0031] The sewing device 3 includes a needle bar, a needle, and a needle bar lifting structure for controlling the needle bar. The needle is mounted on the needle bar, and the needle bar lifting structure is electrically connected to the control element. The sewing device can adopt a common sewing machine structure. When the main motor rotates once, the mechanical linkage drives the sewing needle bar, needle, thread, and hook below to work together once. It continuously sews during the production process, and only the zipper chain does not participate in sewing when it is cut.

[0032] The collecting device 2 includes a take-up wheel for pulling the zipper code tape 11. The zipper code tape 13 is located between the two take-up wheels. The relative rotation of the two take-up wheels pulls the zipper code tape 13 to move.

[0033] When the cutter rises, the chain conveyor synchronizes with the needle bar of the zipper needle, feeding one tooth of the zipper chain with each stitch. The chain is fed through the upper pressure plate 8, the lower pressure plate 9, and the conveyor groove until it enters the sewing position, so that the zipper chain and zipper tape are sewn together. When the cutter descends and cuts the zipper chain, the gear structure stops rotating, stopping the conveying of the zipper chain. That is, the current cycle stops until the tape head is left before the zipper chain is conveyed again.

[0034] like Figure 5 As shown, the zipper tape produced by this device does not have an extra center line of the zipper chain at the head, which facilitates the installation of the zipper head and makes the left and right gaps of the zipper head smaller to ensure its performance.

[0035] The above description discloses only preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A zipper production device, comprising a sewing table (1), a feeding mechanism for conveying zipper tape and zipper chain to the sewing table (1), and a collecting device (2), wherein the sewing table (1) is provided with a sewing device (3) for sewing zipper chain (5) and zipper tape (6), and the collecting device (2) is used to pull the sewn zipper tape (11), characterized in that: The sewing table (1) is also equipped with a cutting device (4). Both the sewing device (3) and the cutting device (4) are controlled by a control element. The control element controls the cutting device (4) to cut the zipper chain (5) after the sewing device (3) has sewn a set number of stitches. The feeding mechanism includes a chain conveyor (71) and a zipper belt conveyor (72), and the zipper chain (5) is conveyed to the sewing table (1) through the chain conveyor (71). The chain conveyor (71) cooperates with the zipper belt conveyor (72) to ensure that the zipper chain (5) does not overlap with the zipper belt (6) below the cutting device (4); The chain conveyor (71) is a gear structure, and the zipper belt conveyor (72) includes two rollers located on both sides of the chain conveyor (71), and the two rollers respectively transport two zipper belts (6). When the cutter is raised, the chain conveying device (71) is synchronized with the needle bar of the zipper needle, and one tooth of the zipper chain (5) is fed with each stitch; when the cutter is lowered to cut the zipper chain (5), the gear structure stops rotating and stops conveying the zipper chain (5), that is, the work of this cycle is stopped until the lead is left and the zipper chain (5) is conveyed again.

2. The zipper production equipment according to claim 1, characterized in that: The zipper chain (5) is conveyed between the two zipper belts (6) by the chain conveyor (71).

3. The zipper production equipment according to claim 1, characterized in that: The tooth pitch of the gear structure matches the tooth pitch of the zipper chain (5).

4. The zipper production equipment according to claim 1, characterized in that: The feeding mechanism and the collecting device (2) are located on both sides of the sewing table (1), the sewing device (3) is set on the sewing table (1) near the collecting device (2), and the cutting device (4) is set on the sewing table (1) near the feeding mechanism.

5. A zipper production equipment according to claim 1, characterized in that: The sewing table (1) includes an upper pressure plate (8) and a lower pressure plate (9). The upper pressure plate (8) and the lower pressure plate (9) cooperate to form a first channel for limiting the zipper belt (6). A conveying groove (51) is also provided between the upper pressure plate (8) and the lower pressure plate (9). The zipper chain (5) is conveyed to the two zipper belts (6) through the conveying groove (51).

6. A zipper production equipment according to claim 5, characterized in that: The conveying trough (51) is located on the upper end face of the lower pressure plate (9), and the inlet end of the conveying trough (51) corresponds to and is close to the chain conveying device (71).

7. A zipper production equipment according to claim 5, characterized in that: The suturing device (3) includes a needle bar, a suturing needle, and a needle bar lifting structure, wherein the needle bar lifting structure is electrically connected to a control element; the cutting device (4) includes a cutter (41) and a lifting rod (42) connected to the cutter (41), wherein the lifting rod (42) is electrically connected to a control element.

8. A zipper production equipment according to claim 7, characterized in that: The conveying groove (51) is located below the cutting device (4), and a groove or through hole (52) is provided at the position corresponding to the cutter (41).

9. A zipper production equipment according to claim 1, characterized in that: The collecting device (2) includes a take-up wheel for pulling the zipper code tape (11), the zipper code tape (11) is located between two take-up wheels, and the relative rotation of the two take-up wheels pulls the zipper code tape (11) to move.

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