A dual puller threading mechanism

Abstract

The utility model relates to zip pull head technology field, specifically disclose a double pull head pull head mechanism, when carrying out the pull head of double pull head zipper between the pull head of chain belt and, through the use of the upper stop locator promotes the upper stop of one side chain belt, thereby can promote the upper stop deviation certain angle to make the upper stop can be aligned with the pull head of the pull -in, thereby the upper stop is convenient to pull into the pull head, when carrying out the pull head of one side chain belt, again using the bolt locator promotes the bolt on the other side chain belt, thereby make the bolt carry out the deviation of angle to make the bolt can be aligned with the pull -in of the other side of pull head, so that the bolt on this side chain belt can pull into the pull head, through being equipped with the upper stop locator and bolt locator respectively, can promote the upper stop and bolt on two side chain belts respectively, thereby make the upper stop and bolt can be aligned with the pull -in of the two sides of pull head, improve the work efficiency while improving the pull -in accuracy.

Description

Technical Field

[0001] This utility model relates to the field of zipper threading technology, and in particular to a double zipper threading mechanism. Background Technology

[0002] Single-zipper zippers are the most common and widely used type of zipper, found in bed sheets, clothing pockets, crotches, and other areas. Double-zipper zippers, on the other hand, are even more widely used, particularly in the openings of bags and outerwear. They can be opened from multiple directions and positions, offering greater convenience and flexibility. The zipper threading mechanism is a device that engages the zipper head with the zipper teeth at a threading station. The zipper can close or open as the zipper head moves. However, existing double-zipper zippers have a high error rate when threading the zipper head between the zipper head and the top stop of the zipper, and most still require manual threading, leading to low efficiency and impacting production schedules.

[0003] The technical problem to be solved by this application is: to design a double-pull-head threading mechanism that can improve the accuracy of threading and increase work efficiency. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a double-pull head threading mechanism that can improve the accuracy of threading and increase work efficiency.

[0005] The technical solution adopted by this utility model is as follows: a double pull head threading mechanism, including a left threading device and a right threading device. The left threading device includes a sensing top block for sensing the upper stop of the chain belt, a positioning block for positioning the chain belt, and an upper stop positioning device for pushing the upper stop of the chain belt at an angle so that the upper stop is aligned with the threading opening of one of the pull heads. The right threading device includes a sensing plate for sensing the chain teeth, a positioning pin for positioning the chain belt pin, and a pin positioning device for pushing the chain belt pin at an angle so that the pin is aligned with the threading opening of the other pull head.

[0006] In some embodiments, the left-hand insertion device includes a connecting rod connected to a sensing top block, the connecting rod having a mounting base rotatably connected thereto, the mounting base having a first sensor connected thereto, the first sensor corresponding to the end of the connecting rod away from the sensing top block.

[0007] In some embodiments, the mounting base is provided with a first drive cylinder mounted thereon, and the drive end of the first drive cylinder is provided with a pressure pin connected thereto, the pressure pin being located above the connecting rod.

[0008] In some embodiments, the bottom of the mounting base is provided with a first slider connected thereto, the first slider is provided with a first slide rail that limits and slides thereto, and the mounting base is provided with a first push cylinder that is driven thereto.

[0009] In some embodiments, one end of the sensing top block is provided with an arc portion, and the sensing top block is provided with a limiting groove on the side opposite to the arc portion for locking the chain block.

[0010] In some embodiments, the positioning block is provided with a first pressing cylinder that is driven to it, the upper stop positioning device is provided with a second driving cylinder that is driven to it, and the left threading device also includes a dividing needle for separating the chain belt, the dividing needle being provided with a second pressing cylinder that is driven to it.

[0011] In some embodiments, the right-hand insertion device includes a pin sensor base, a sensor plate rotatably connected to the pin sensor base, a connecting pin provided with a connecting pin, a connecting spring connected to one end of the sensor plate and the connecting pin, and the pin sensor base also provides a second sensor corresponding to the sensor plate.

[0012] In some embodiments, the pin sensor seat has a through slot for the chain to pass through, one end of the sensor plate extends into the through slot, and the positioning pin and the pin sensor seat are in a limiting sliding engagement.

[0013] In some embodiments, the positioning pin is provided with a third drive cylinder that is driven thereto, and the pin sensing seat is also provided with a fourth drive cylinder that is driven thereto.

[0014] In some embodiments, the pin locator is provided with a fifth drive cylinder that is driven to it, and the opening of the pin locator is provided with an inclined block.

[0015] This invention has the following technical advantages: When threading a double-pull zipper between the chain and the zipper head, the upper stop positioner is used to push the upper stop of one side of the chain, thereby shifting the upper stop at a certain angle so that it aligns with the zipper head's threading opening, facilitating the upper stop's insertion into the zipper head. After threading one side of the chain, the pin positioner is used to push the pin on the other side of the chain, causing the pin to shift at an angle so that it aligns with the threading opening on the other side of the zipper head, allowing the pin on that side of the chain to insert into the zipper head. By providing both the upper stop positioner and the pin positioner, the upper stop and pin on both sides of the chain can be pushed respectively, thereby aligning the upper stop and pin with the threading openings on both sides of the zipper head, improving threading accuracy and significantly increasing work efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the double pull head threading mechanism of this utility model; Figure 2 This is a schematic diagram of the left threading device of the double-pull-head threading mechanism of this utility model; Figure 3 This is a schematic diagram of the sensing top block structure of the double pull head threading mechanism of this utility model; Figure 4 This is a schematic diagram of the upper stop positioner structure of the double pull head threading mechanism of this utility model; Figure 5 This is a schematic diagram of the right threading device of the double-pull-head threading mechanism of this utility model; Figure 6 This is a schematic diagram of the pin locator structure of the double pull-head threading mechanism of this utility model.

[0017] The labels and names in the diagram correspond as follows: 1. Left through-head device; 2. Right through-head device; 10. Sensing top block; 11. Positioning block; 12. Upper stop positioner; 20. Sensing plate; 21. Positioning pin; 22. Pin positioner; 13. Connecting rod; 14. Mounting base; 15. First sensor; 140. First drive cylinder; 141. First slider; 142. First slide rail; 100. Arc part; 101. Limiting groove; 110. First pressing cylinder; 120. Second drive cylinder; 16. Dividing needle; 160. Second pressing cylinder; 23. Pin sensing seat; 230. Connecting pin; 231. Connecting spring; 232. Second sensor; 233. Through groove; 210. Third drive cylinder; 230. Fourth drive cylinder; 220. Fifth drive cylinder; 221. Inclined block. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0019] Please see Figure 1-6 This utility model provides a technical solution: a double-pull-head threading mechanism, including a left threading device 1 and a right threading device 2 (see appendix for details on left and right directions). Figure 1(Upper right corner coordinate direction), wherein the left threading device 1 includes a sensing top block 10 for sensing the top stop of the chain, a positioning block 11 for positioning the chain, and a top stop positioning device 12 for pushing the top stop of the chain to align the top stop with the threading opening of one of the pull heads. The left threading device 1 includes a connecting rod 13 connected to the sensing top block 10, wherein the connecting rod 13 is provided with a mounting base 14 rotatably connected thereto, and a first sensor 15 is provided on the mounting base 14 and connected thereto. The first sensor 15 corresponds to the end of the connecting rod 13 away from the sensing top block 10. Since the chain is conveyed through the feed plate when the chain is being threaded through the pull head, when the chain is conveyed through the feed plate, the sensing top block 10 is activated. The bottom of block 10 contacts the top stop. Because the connecting rod 13 is rotatably connected to the mounting base 14, the top stop on the chain will push the sensing top block 10 to cause the connecting rod 13 to deflect, thus making one end of the connecting rod 13 contact with the first sensor 15. The first sensor 15 indicates that it has received a signal that the top stop and the sensing top block 10 are in contact. After the sensing top block 10 contacts the top stop of one side of the chain, the chain continues to be conveyed forward for a certain distance. Then, the positioning block 11 descends to position the chain. The positioning block 11 is equipped with a first pressing cylinder 110 that is connected to it. The positioning block 11 is driven to descend by the first pressing cylinder 110 to position the chain on the side that needs to be threaded. After the positioning block 11 positions one side of the chain, the upper stop positioner 12 pushes the upper stop, causing it to tilt and better align with the threaded opening of the drawer head. The upper stop positioner 12 is equipped with a second drive cylinder 120 connected to it. The second drive cylinder 120 drives the upper stop positioner 12, causing it to tilt. The upper stop positioner 12 has a notch, which allows it to tilt. Once the upper stop aligns with the threaded opening on one side of the drawer head due to the tilt, the traction feeding mechanism at the rear of the equipment drives the chain forward, allowing the upper stop of one side of the chain to smoothly pass into the drawer head, thus completing the process on one side. The zipper pull for the chain belt is designed for zipper pulls with two zipper heads. During the pull, the tails of the two zipper heads are placed side-by-side facing each other. This allows the top stop to be inserted into both zipper heads, thus completing the double-zipper pull. To ensure better zipper pull completion, the left zipper pull device 1 also includes a dividing needle 16 for separating the chain belt. The dividing needle 16 is connected to a second pressing cylinder 160. By driving the dividing needle 16 downwards using the second pressing cylinder 160, the dividing needle 16 can be inserted between the two chain belts, causing the left chain belt to shift. This allows the left chain belt to better disengage from the zipper head at the rear during zipper pull.

[0020] The right-hand threading device 2 includes a sensing plate 20 for sensing chain teeth, a positioning pin 21 for positioning the chain belt pin, and a pin positioner 22 for pushing the chain belt pin at an angle to align the pin with the threading opening of another zipper. The right-hand threading device 2 also includes a pin sensing seat 23, wherein the sensing plate 20 and the pin sensing seat 23 are rotatably connected. The pin sensing seat 23 is provided with a connecting pin 230, and a connecting spring 231 is provided between one end of the sensing plate 20 and the connecting pin 230. The pin sensing seat 23 also includes a second sensor 232, which corresponds to the sensing plate 20. The sensor base 23 has a through groove 233 for the chain to pass through. One end of the sensor plate 20 extends into the through groove 233. The positioning pin 21 and the pin sensor base 23 are in a limiting sliding engagement, and the sliding direction of the positioning pin 21 is perpendicular to the conveying direction of the chain. The positioning pin 21 is equipped with a third drive cylinder 210 connected to it, and the pin sensor base 23 is equipped with a fourth drive cylinder 230 connected to it. The pin positioner 22 is equipped with a fifth drive cylinder 220 connected to it. The opening of the pin positioner 22 is equipped with a wedge 221. When the right side of the chain needs to be threaded through the pull head, when the chain passes through the pin sensor base 23... When the conveyor belt is conveyed through the slot 233, the chain teeth contact the sensing plate 20, causing the sensing plate 20 to deflect. The second sensor 232 detects the deflection of the sensing plate 20, triggering a signal that the chain teeth are in contact with the sensing plate 20. The signal is transmitted to the third drive cylinder 210. After the conveyor belt has been conveyed forward to the system's preset length, the third drive cylinder 210 drives the positioning pin 21, causing one end of the positioning pin 21 to extend between the upper stop and the pin of the front and rear conveyor belts. Because there is a certain gap between the positioning pin 21 and the bottom of the slot 233, the gap height is only enough for the conveyor belt's fabric to pass through. The upper stop and the pin of the conveyor belt are... If the thickness is too large to pass through, the chain on this side can only move back and forth within the distance between the pin stop and the pin. Then, the fourth drive cylinder 230 drives the pin positioner 22 to push, so that the pin positioner 22 pushes the pin to tilt so that the pin can be aligned with the through hole of the zipper. Since the pin is aligned with the through hole of the zipper in the rear position between the two zippers, the fourth drive cylinder 230 needs to pull the pin sensing seat 23 in the opposite direction of the chain conveyor, so that the positioning pin 21 drives the chain to pull back synchronously, thereby allowing the pin to pass into the two zippers, thus completing the threading process of the chain on this side.

[0021] Simultaneously, during the right-side threading of the pull head, to prevent the right-side chain from moving in conjunction with the left-side chain and causing the right-side chain to detach from the pull head, the mounting base 14 is equipped with a first drive cylinder 140. The drive end of the first drive cylinder 140 is equipped with a pressure pin connected to it, located above the connecting rod 13. When threading the right-side pull head, the first drive cylinder 140 drives the pressure pin to descend, causing the pressure pin to press against the top of the connecting rod 13. This limits the height of the lifting of the sensing top block 10, thus preventing the left-side chain from moving. One end of the sensing top block 10 has an arc portion 100, and the side of the sensing top block 10 opposite to the arc portion 100 has a limiting groove 101 for locking the chain block. The bottom of the mounting base 14 is equipped with a first drive cylinder 140 connected to it. The slider 141 is equipped with a first slide rail 142 that is limited and slidably engaged with it. The mounting base 14 is equipped with a first push cylinder that is connected to it in a transmission manner. When the right side of the pull head is inserted, the first push cylinder pushes the mounting base 14 to slide along the first slider 141, thereby causing the sensing top block 10 to press against the front of the block inserted into the pull head. The limiting groove 101 of the sensing top block 10 can lock the block of the chain, thereby preventing the left side of the pull head from falling off the chain. After the right side of the pull head is inserted, the first drive cylinder 140 drives the pressure pin to rise, and the first push cylinder drives the mounting base 14 to retract. The clamping and conveying mechanism of the equipment drives the pull head to close the chain, and the chain continues to be conveyed forward, thereby restarting the subsequent chain pull head insertion process.

[0022] The beneficial effects of this utility model are as follows: When threading the chain and the zipper head of a double-head zipper, the upper stop positioner 12 is used to push the upper stop of one side of the chain, thereby shifting the upper stop at a certain angle so that it can be aligned with the threading opening of the zipper head, thus facilitating the upper stop to be threaded into the zipper head. After threading one side of the chain, the pin positioner 22 is used to push the pin on the other side of the chain, thereby shifting the pin at an angle so that it can be aligned with the threading opening on the other side of the zipper head, so that the pin on this side of the chain can be threaded into the zipper head. By providing the upper stop positioner 12 and the pin positioner 22 respectively, the upper stop and the pin on both sides of the chain can be pushed respectively, thereby aligning the upper stop and the pin with the threading openings on both sides of the zipper head, thus improving the threading accuracy and greatly improving work efficiency.

[0023] Finally, it should be noted that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A double-pull-head threading mechanism, characterized in that, The device includes a left threading device and a right threading device. The left threading device includes a sensing top block for sensing the top stop of the chain belt, a positioning block for positioning the chain belt, and a top stop positioning device for pushing the top stop of the chain belt at an angle to align the top stop with the threading opening of one of the zipper pulls. The right threading device includes a sensing plate for sensing the chain teeth, a positioning pin for positioning the chain belt pin, and a pin positioning device for pushing the chain belt pin at an angle to align the pin with the threading opening of another zipper pull.

2. The double-pull-head threading mechanism according to claim 1, characterized in that, The left-hand head-piercing device includes a connecting rod connected to the sensing top block. The connecting rod is provided with a mounting base rotatably connected thereto. The mounting base is provided with a first sensor connected thereto. The first sensor corresponds to the end of the connecting rod away from the sensing top block.

3. The double-pull-head threading mechanism according to claim 2, characterized in that, The mounting base is equipped with a first drive cylinder, and the drive end of the first drive cylinder is equipped with a pressure pin connected thereto, the pressure pin being located above the connecting rod.

4. The double-pull-head threading mechanism according to claim 2, characterized in that, The bottom of the mounting base is provided with a first slider connected thereto. The first slider is provided with a first slide rail that limits and slides with it. The mounting base is provided with a first push cylinder that is connected to it in a transmission manner.

5. The double-pull-head threading mechanism according to claim 1, characterized in that, One end of the sensing top block is provided with an arc portion, and the sensing top block is provided with a limiting groove on the side opposite to the arc portion for locking the chain block.

6. The double-pull-head threading mechanism according to claim 1, characterized in that, The positioning block is equipped with a first pressing cylinder that is driven to it, the upper stop positioning device is equipped with a second driving cylinder that is driven to it, and the left threading device also includes a separating needle for separating the chain belt, the separating needle being equipped with a second pressing cylinder that is driven to it.

7. The double-pull-head threading mechanism according to claim 1, characterized in that, The right-hand insertion device includes a pin sensing base, the sensing plate and the pin sensing base are rotatably connected, the pin sensing base is provided with a connecting pin, one end of the sensing plate and the connecting pin are provided with a connecting spring connected to each other, the pin sensing base is also provided with a second sensor, the second sensor is corresponding to the sensing plate.

8. The double-pull-head threading mechanism according to claim 7, characterized in that, The pin sensor seat is provided with a through groove for the chain to pass through, one end of the sensor plate extends into the through groove, and the positioning pin and the pin sensor seat are in a limiting sliding engagement.

9. The double-pull-head threading mechanism according to claim 8, characterized in that, The positioning pin is equipped with a third driving cylinder that is connected to it, and the pin sensing seat is also equipped with a fourth driving cylinder that is connected to it.

10. The double-pull-head threading mechanism according to claim 8, characterized in that, The pin positioner is equipped with a fifth drive cylinder that is connected to it for transmission, and the opening of the pin positioner is provided with an inclined block.

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