A zipper threading unit that can be threaded in both directions, and an integrated machine for cutting, threading, and attaching the stop button equipped with this unit.

Abstract

The zipper threading unit capable of forward and reverse threading includes a zipper tape advancing device with the upper end of the zipper as the head and driving the zipper tape forward. Two slider feeding clamping devices, one in front and one in the back, with the sliders facing opposite directions, are arranged on the path where the zipper tape advancing device drives the zipper tape forward. The cutting, threading and stop-stopping integrated machine using the zipper threading unit capable of forward and reverse threading not only has a high degree of automation and integration, but also has the characteristics of a high degree of flexible manufacturing for switching forward and reverse threading.

Description

Technical Field

[0001] The invention relates to the technical field of zipper manufacturing equipment, in particular to a zipper threading unit capable of being threaded forwards and backwards and a cutting, threading and stop-stopping integrated machine provided with the unit. Background Art

[0002] The manufacture of a zipper requires many processes, including the cutting process of cutting the continuous semi-finished zipper tape into a single zipper according to the specified length at the upper end of the finished zipper; the threading process of inserting the slider into the chain teeth from the upper end of the zipper; and the top stop process of forming the top stop at the upper end of the chain teeth.

[0003] For nylon zippers, the side where the chain elements protrude from the tape is the front side of the zipper, and the side opposite to it is the back side of the zipper. After the threading process, the slider is inserted into the chain elements. When the slider's pull tab is on the front side of the zipper, this threading process is called the positive threading process; when the slider's pull tab is on the back side of the zipper, this threading process is called the reverse threading process.

[0004] Nowadays, the automation and integration of zipper manufacturing equipment are getting higher and higher, so there are integrated cutting, threading and stop-attaching machines that can automatically complete the processes of cutting, threading and stop-attaching. However, the existing integrated cutting, threading and stop-attaching machines can only thread forward or backward, and cannot switch between forward and reverse threading on one machine. Therefore, there is a shortcoming that the flexible manufacturing degree of the integrated cutting, threading and stop-attaching machines for forward and reverse threading in the zipper manufacturing process is not high. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a zipper threading unit that can be threaded forwards and backwards, and the unit can switch between forward and reverse threading according to manufacturing requirements.

[0006] By adopting the zipper threading unit that can be threaded forwards and backwards, a cutting, threading and stop-fastening integrated machine equipped with the unit is provided, which has the characteristics of high flexibility in forward and backward threading.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0008] A zipper threading unit capable of being threaded forward and backward includes a zipper tape advancing device with the upper end of the zipper as the leading end and driving the zipper tape forward, and two slider feeding clamping devices, one in front and one in the back, with sliders facing in opposite directions, are arranged on the path along which the zipper tape advancing device drives the zipper tape forward;

[0009] The pull head feeding and clamping device comprises a pull head feeding device and a pull head clamping device, wherein the pull head clamping end of the pull head clamping device is located at the discharge end of the pull head feeding device and is located on the travel path of the zipper tape moving device driving the zipper tape to move forward;

[0010] The other pull head feeding and clamping device comprises a pull head feeding device, a pull head clamping device and a pull head turning device, wherein the pull head clamping device is arranged on the pull head turning device, and the pull head clamping device can make the pull head clamping end of the pull head clamping device turn vertically 180 degrees under the drive of the pull head turning device; the pull head clamping end of the pull head clamping device is located at the discharge end of the pull head feeding device before turning, and is located on the travel path of the zipper tape moving device driving the zipper tape to move forward after turning vertically 180 degrees;

[0011] The zipper threading unit also includes a control system for controlling the operation of the zipper tape carrying device and the two slider feeding and clamping devices.

[0012] Furthermore, the zipper tape advancing device includes a left clamp and a right clamp opposite to each other, a left and right driving member that drives the left clamp and the right clamp to separate relative to the left and right, and a front and rear driving member that drives the left clamp and the right clamp to move forward and backward. The left and right driving members and the front and rear driving members are all electrically connected to the control system.

[0013] Furthermore, the left and right driving members are a left electric cylinder and a right electric cylinder, the left clamp is arranged on the left electric cylinder, the right clamp is arranged on the right electric cylinder, the left electric cylinder and the right electric cylinder are both arranged on the front and rear driving members, and the left electric cylinder and the right electric cylinder are both electronically connected to the control system.

[0014] Furthermore, the front and rear driving parts are a left front and rear electric cylinder and a right front and rear electric cylinder, the left electric cylinder is arranged on the left front and rear electric cylinder, and the right electric cylinder is arranged on the right front and rear electric cylinder, and the left front and rear electric cylinder and the right front and rear electric cylinder are both electronically connected to the control system.

[0015] Furthermore, the pull head one by one feeding device in the pull head feeding clamping device includes a pull head vibration disk, a pull head arrangement feed channel, a pull head one by one pushing mechanism, and a single pull head carrying and forward feeding mechanism. The outlet of the pull head vibration disk is connected with the entrance of the pull head arrangement feed channel. The pull head one by one pushing mechanism is arranged at the outlet of the pull head arrangement feed channel. The single pull head carrying and forward feeding mechanism includes a rear receiving position and a front discharging position. The rear receiving position is located at the outlet of the pull head arrangement feed channel, and the front discharging position is the discharging end of the pull head one by one feeding device; the pull head vibration disk, the pull head one by one pushing mechanism, and the single pull head carrying and forward feeding mechanism are all electrically connected to the control system.

[0016] Furthermore, the slider flipping device includes a flipping motor and a rotating shaft, one end of the rotating shaft is fixedly connected to the rotating output member of the flipping motor, and the other end is fixedly connected to the slider clamping device; the flipping motor is electrically connected to the control system.

[0017] A cutting, threading and stop-attaching integrated machine comprises a zipper conveying device, a continuous zipper tape positioning device, a continuous zipper tape cutting device, a threading device and a stop-attaching device, wherein the threading device adopts any of the above-mentioned zipper threading units capable of forward and reverse threading.

[0018] The working method of the zipper threading unit capable of forward and reverse threading of the present invention is as follows: a slider feeding and clamping device can be used to feed and clamp a slider facing downward or upward at a threading station, and another slider feeding and clamping device can be used to feed and clamp another slider facing in the opposite direction at another threading station arranged in parallel in front or behind; depending on the needs of forward and reverse threading zipper manufacturing, the control system controls one of the slider feeding and clamping devices to operate and the other slider feeding and clamping device to stop; the zipper tape moving device drives the zipper tape to move forward with the upper end of the zipper as the head, and when passing through the threading station, the slider clamped at the threading station is inserted into the chain teeth to complete the threading process. When it is necessary to switch between forward and reverse threading according to the needs of forward and reverse threading zipper manufacturing, it is only necessary to switch the working states of the two slider feeding and clamping devices through the control system, and the operation of switching between forward and reverse threading is very convenient.

[0019] The integrated machine for cutting, threading and attaching a stopper using the zipper threading unit capable of threading the zipper forwards and backwards not only has a high degree of automation and integration, but also has the characteristics of a high degree of flexible manufacturing for switching between forward and reverse threading. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of a continuous zipper tape;

[0021] Figure 2 This is a schematic diagram of the structure of a finished zipper;

[0022] Figure 3 This is a side view of a straight-through zipper;

[0023] Figure 4 This is a side view of the reverse zipper;

[0024] Figure 5 It is a structural schematic diagram of the zipper threading unit that can be threaded forwards and backwards according to the present invention;

[0025] Figure 6 It is a schematic structural diagram of the zipper tape traveling device of the present invention;

[0026] Figure 7 It is a schematic structural diagram of the forward pull head feeding clamping device of the present invention;

[0027] Figure 8 It is a structural schematic diagram of a part of the forward pull head feeding clamping device of the present invention;

[0028] Fig. 9It is a structural schematic diagram of the mechanism for advancing the sliders one by one in the present invention;

[0029] Fig.10 It is a structural schematic diagram of the single pull head bearing forward delivery mechanism of the present invention;

[0030] Fig.11 It is a structural schematic diagram of the slider clamping device of the present invention;

[0031] Fig.12 It is a three-dimensional exploded view of the slider clamping device of the present invention;

[0032] Fig.13 It is a cross-sectional view of a portion of the slider clamping device of the present invention;

[0033] Fig.14 It is a structural schematic diagram of the reverse pull head feeding clamping device in the present invention;

[0034] Fig.15 It is a structural schematic diagram of a part of the reverse pull head feeding clamping device of the present invention;

[0035] Fig.16 The invention is a schematic structural diagram of a cutting, threading and stop-fastening integrated machine provided with a zipper threading unit capable of being threaded forwards and backwards. DETAILED DESCRIPTION

[0036] In order to explain the technical content, structural features, achieved objectives and effects of the present invention in detail, the following is a detailed description in conjunction with the implementation methods and the accompanying drawings.

[0037] See also Figure 1 , which is a schematic diagram of the structure of a continuous zipper tape 1 to be cut, threaded, and stopped, including a front zipper 2 and a rear zipper 3. Each zipper has components such as a cloth tape 4, a chain tooth 5, a square latch 6, and a tape 7. The portion located at the end of the square latch 6 is the lower end portion 601 of the zipper.

[0038] See also Figure 2 , which is a schematic diagram of the structure of a finished zipper after being cut, threaded, and top-stopped, including a cloth tape 4, a chain tooth 5, a square latch 6, a tape 7, a slider 8, a top stop 9 and other components. The portion located at the end of the top stop 9 is the upper end portion 901 of the zipper.

[0039] See also Figure 3 , 4 , which is a schematic diagram of the side structure of the finished zipper. When the pull tab 801 of the slider 8 is located on the front side of the zipper, the zipper is a forward-through zipper; when the pull tab 801 of the slider 8 is located on the reverse side of the zipper, the zipper is a reverse-through zipper.

[0040] See also Figure 5The zipper threading unit capable of being threaded forward and backward of the present invention comprises a zipper tape traveling device 10, a reverse pull head feeding clamping device 50, a forward pull head feeding clamping device 20 and a control system.

[0041] See also Figure 6 The zipper belt traveling device 10 includes a left front and rear electric cylinder 11 and a right front and rear electric cylinder 12. The left front and rear electric cylinder 11 and the right front and rear electric cylinder 12 are both horizontally arranged and spaced in parallel to form a front and rear driving member; a left electric cylinder 13 is provided on the left front and rear electric cylinder 11, and a right electric cylinder 14 is provided on the right front and rear electric cylinder 12. The left electric cylinder 13 and the right electric cylinder 14 form a left and right driving member; a left clamp 15 is provided on the left electric cylinder 13, and a right clamp 16 is provided on the right electric cylinder 14. The left clamp 15 and the right clamp 16 are arranged opposite to each other. The left front and rear electric cylinder 11 and the right front and rear electric cylinder 12 can drive the left electric cylinder 13 and the right electric cylinder 14 to move back and forth in a straight line synchronous manner, and the left electric cylinder 13 and the right electric cylinder 14 can drive the left clamp 15 and the right clamp 16 to be synchronously separated from each other from left to right. When the front of the zipper faces downward, the left clamp 15 clamps the left half of the cloth tape 4 at the upper end 901 of the zipper, and the right clamp 16 clamps the right half of the cloth tape 4 at the upper end 901 of the zipper, the zipper tape advancing device 10 can use the upper end 901 of the zipper as the head to drive the zipper tape to move forward in a straight line. When it moves to the head insertion position, the left clamp 15 and the right clamp 16 can open the upper end 901 of the zipper to the left and right to help the slider 8 to penetrate the chain tooth 5.

[0042] On the front and rear straight travel path of the zipper tape travel device 10, a reverse slider feeding clamping device 50 and a forward slider feeding clamping device 20 are arranged side by side, one in front and one in the back.

[0043] See also Figure 7 , 8 , 9, 10, the forward slider feeding and clamping device 20 includes a slider feeding device and a slider clamping device.

[0044] The slider feeding device comprises a slider vibration plate 21, a slider arrangement feeding channel 22, a slider one-by-one pushing mechanism 23, and a single slider carrying forward feeding mechanism 24. The slider vibration plate 21 regularizes the disordered slider raw materials through vibration and then outputs them from the outlet 211 of the slider vibration plate. The outlet 211 of the slider vibration plate is connected with the inlet 221 of the slider arrangement feeding channel. The slider arrangement feeding channel 22 is J-shaped as a whole. The slider slides along the J-shaped slider arrangement feeding channel 22 to the outlet 222 of the slider arrangement feeding channel by its own gravity. At this time, the slider pull tab faces downward. When the slider with the pull tab facing downward is inserted into the zipper facing downward, it is a normal insertion. The pull head one by one pushing mechanism 23 is arranged at the outlet 222 of the pull head arrangement feed channel, and the single pull head carrying forward feeding mechanism 24 includes a rear receiving position 241 and a front discharging position 242. The rear receiving position 241 is located at the outlet 222 of the pull head arrangement feed channel, and the front discharging position 242 is the discharging end of the pull head one by one feeding device. The pull head one by one pushing mechanism 23 can push the first pull head in a row of pull heads located in the pull head arrangement feed channel 22 separately into the single pull head carrying forward feeding mechanism 24 located at the rear receiving position 241. This pull head is then transported forward by the single pull head carrying forward feeding mechanism 24 to the front discharging position 242, that is, the discharging end of the pull head one by one feeding device, thereby completing the one-by-one feeding of pull heads.

[0045] The slider pushing mechanism 23 includes a cylinder 231, a telescopic driving member of the cylinder 231 is fixedly connected to a slider 232, and the slider 232 is arranged on a slide rail 233. The front end of the slider 232 is hinged to a push block 234, and the rear of the lower part of the push block 234 is wedge-shaped. A spring 235 is provided between the upper part of the push block 234 and the slider 232. The cylinder 231 can drive the slider 232 to move back and forth on the slide rail 233. When the slider 232 moves from front to back, the push block 234 slides over the first slider under the action of the wedge surface. At this time, the upper part of the push block 234 compresses the spring 235 to make the push block 234 rotate; after the push block 234 slides over the first slider, under the action of the spring 235, the push block 234 rotates in the opposite direction, so that the lower part of the push block 234 is located behind the first slider. Then, when the slider 232 moves from back to front, the push block 234 can only push the first slider forward to realize feeding one by one.

[0046] The single-pull head carrying forward delivery mechanism 24 includes a single-pull head forward delivery electric cylinder 243, a single-pull head forward delivery slider 244 is provided on the linear reciprocating motion part of the single-pull head forward delivery electric cylinder 243, a single-pull head carrying block 245 is provided at the end of the single-pull head forward delivery slider 244, and a single-pull head carrying position 246 is provided on the single-pull head carrying block 245. The single-pull forward electric cylinder 243 can drive the single-pull forward slide block 244 and the single-pull bearing block 245 to reciprocate linearly. When it moves to the rear end, it is the rear receiving position 241 of the single-pull bearing forward delivery mechanism 24. At this time, the single-pull bearing position 246 on the single-pull bearing block 245 corresponds to the outlet 222 of the pull arrangement feeding channel; when it moves to the front end, it is the front discharge position 242 of the single-pull bearing forward delivery mechanism 24, that is, the discharge end of the pull-pull feeding device one by one. At this time, the single-pull bearing position 246 on the single-pull bearing block 245 corresponds to the discharge end of the pull-pull feeding device one by one. The end of the single-pull bearing block 245 has a recessed portion 2451, which is used to accommodate a single pull. At the front end of the recessed portion 2451, there is a clamping block 2452 that is normally closed, can be rotated to open under force, and returns to normal without force.

[0047] See also Fig.11 , 12 13. The slider clamping end 31 of the slider clamping device is located at the discharging end of the slider feeding device, and can clamp a single slider to be inserted at the discharging end of the slider feeding device. The slider clamping end 31 is located on the path where the zipper tape traveling device 10 drives the zipper tape to move forward, so that the zipper tape can be inserted into the chain tooth when passing through this place. The slider clamping device includes a slider clamping upper and lower cylinders 32, the telescopic driving parts of the slider clamping upper and lower cylinders 32 are fixedly connected to the slider clamping upper and lower sliders 33, the slider clamping upper and lower sliders 33 are arranged on the slider clamping upper and lower slide rails 34, the slider clamping upper and lower sliders 33 are provided with a fixed clamp 35, a rotating clamp 36, and a rotating clamp driving cylinder 37, the telescopic driving part of the rotating clamp driving cylinder 37 is fixedly connected to a rotating clamp linear moving block 38, the rotating clamp linear moving block 38 is provided with a horizontal rotating clamp moving long sliding hole 381, the lower end portion 361 of the rotating clamp is hinged relative to the slider clamping upper and lower sliders 33, and the rotating clamp is rotated. A movable circular hole 364 is provided in the middle part 362 of the movable clamp, and a circular shaft forms a clearance fit with the movable circular hole 364, and the circular shaft is located in the rotating clamp movable long sliding hole 381 of the rotating clamp linear moving block 38. With such a configuration, the rotating clamp linear moving block 38 can be driven by the rotating clamp driving cylinder 37 to reciprocate up and down in a straight line, and the rotating clamp linear moving block 38 can drive the rotating clamp 36 to rotate around the hinge position of its lower end, so that the upper end 363 of the rotating clamp can be rotated to close and cooperate with the fixed clamp 35 to form a clamping slider state, and can also be rotated to open so that the slider inserted into the chain tooth can be discharged together with the zipper.

[0048] When the slider is a spring slider or a stop slider, in the insertion process, the pull tab must be pulled open to open the locking function of the slider before the slider can be smoothly inserted into the chain tooth. At this time, a pull tab opening mechanism must be provided in the slider clamping device, and the pull tab opening mechanism includes a pull tab opening cylinder 41, a pull tab opening linear moving block 42, a rotating connecting rod 43 and a hook 44. The telescopic driving member of the pull tab opening cylinder 41 is fixedly connected to the pull tab opening linear moving block 42. The pull tab opening linear moving block 42 is provided with a horizontally placed pull tab moving long sliding hole 421. The rotating connecting rod 43 is L-shaped as a whole, and a rotating shaft 431 is provided at the corner of the rotating connecting rod 43, and a moving circular hole is provided at the lower right end 432 of the rotating connecting rod. 433, a circular shaft is clearance-matched with the movable circular hole 433, and the circular shaft is located in the long sliding hole 421 of the pull-tab moving linear moving block 42, and the upper left part 434 of the rotating connecting rod is fixedly connected with the hook 44. The hook 44 is in the shape of an elongated strip as a whole, and the upper end head 441 of the hook is located below the fixed clamp 35 and the rotating clamp 36, and is hook-shaped. With such an arrangement, the pull-tab pulling cylinder 41 can drive the pull-tab pulling linear moving block 42 to reciprocate up and down in a straight line, and the pull-tab pulling linear moving block 42 can drive the rotating connecting rod 43 to rotate around the rotating shaft 431 at its corner, which can drive the hook 44 to rotate synchronously, so that the upper end head 441 of the hook can be rotated downward to pull the pull tab.

[0049] See also Fig.14 , 15 The reverse slider feeding and clamping device 50 includes a slider feeding device 51, a slider clamping device 52 and a slider flipping device 53. The slider clamping device 52 is arranged on the slider flipping device 53. The slider clamping device 52 can make the slider clamping end of the slider clamping device 52 perform a 180-degree vertical flip under the drive of the slider flipping device 53; the slider clamping end of the slider clamping device 52 is located at the discharging end of the slider feeding device one by one before flipping, and is located on the travel path of the zipper tape moving device driving the zipper tape to move forward after flipping 180 degrees vertically; the slider flipping device 53 includes a flipping motor 531 and a rotating shaft 532, one end of the rotating shaft 532 is fixedly connected to the rotating output member of the flipping motor 531, and the other end is fixedly connected to the slider clamping device 52.

[0050] The control system in the zipper threading unit that can be threaded forward and backward of the present invention is electrically connected to the zipper tape carrying device 10, the reverse pull head feeding clamping device 50, and the forward pull head feeding clamping device 20, and can control the operation of the zipper tape carrying device 10, the reverse pull head feeding clamping device 50, and the forward pull head feeding clamping device 20 respectively.

[0051] See also Fig.16The present invention also provides a cutting, threading and stop-attaching integrated machine, comprising a zipper conveying device 71, a continuous zipper tape positioning device 72, a continuous zipper tape cutting device 73, a threading unit 74 and a stop-attaching device 75. The threading unit 74 adopts the zipper threading unit that can be threaded forward and backward. The cutting, threading and stop-attaching integrated machine of the present invention integrates the forward and backward threading functions, and the switching between the forward and backward threading functions is very convenient, which improves the flexible manufacturing degree of the machine.

[0052] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the technical scope of the present invention.

Claims

1. A zipper head unit capable of being worn forward and backward, comprising a zipper tape advancing device with the upper end of the zipper as the head and driving the zipper tape forward, characterized in that: Two slider feeding clamping devices are provided on the path where the zipper tape advancing device drives the zipper tape to advance, one in front and one behind, with the sliders facing in opposite directions; The pull head feeding and clamping device comprises a pull head feeding device and a pull head clamping device, wherein the pull head clamping end of the pull head clamping device is located at the discharge end of the pull head feeding device and is located on the travel path of the zipper tape moving device driving the zipper tape to move forward; The other pull head feeding and clamping device comprises a pull head feeding device, a pull head clamping device and a pull head turning device, wherein the pull head clamping device is arranged on the pull head turning device, and the pull head clamping device can make the pull head clamping end of the pull head clamping device turn vertically 180 degrees under the drive of the pull head turning device; the pull head clamping end of the pull head clamping device is located at the discharge end of the pull head feeding device before turning, and is located on the travel path of the zipper tape moving device driving the zipper tape to move forward after turning vertically 180 degrees; The zipper threading unit also includes a control system for controlling the operation of the zipper tape carrying device and the two slider feeding and clamping devices.

2. The zipper threading unit capable of being worn forward and backward according to claim 1, characterized in that: The zipper tape advancing device includes a left clamp and a right clamp opposite to each other, a left and right driving member driving the left clamp and the right clamp to separate relative to each other, and a front and rear driving member driving the left clamp and the right clamp to advance forward and backward. The left and right driving members and the front and rear driving members are all electrically connected to the control system.

3. The zipper threading unit capable of being worn forward and backward according to claim 2, characterized in that: The left and right driving parts are a left electric cylinder and a right electric cylinder. The left clamp is arranged on the left electric cylinder, and the right clamp is arranged on the right electric cylinder. Both the left electric cylinder and the right electric cylinder are arranged on the front and rear driving parts, and both the left electric cylinder and the right electric cylinder are electrically connected to the control system.

4. The zipper threading unit capable of being worn forward and backward according to claim 2, characterized in that: The front and rear driving parts are a left front and rear electric cylinder and a right front and rear electric cylinder. The left electric cylinder is arranged on the left front and rear electric cylinder, and the right electric cylinder is arranged on the right front and rear electric cylinder. The left front and rear electric cylinder and the right front and rear electric cylinder are both electrically connected to the control system.

5. The zipper threading unit capable of being threaded forwards and backwards according to claim 1, characterized in that: The pull head one by one feeding device in the pull head feeding clamping device includes a pull head vibration disk, a pull head arrangement feeding channel, a pull head one by one pushing mechanism, and a single pull head carrying and forward feeding mechanism. The outlet of the pull head vibration disk is connected with the inlet of the pull head arrangement feeding channel. The pull head one by one pushing mechanism is arranged at the outlet of the pull head arrangement feeding channel. The single pull head carrying and forward feeding mechanism includes a rear receiving position and a front discharging position. The rear receiving position is located at the outlet of the pull head arrangement feeding channel, and the front discharging position is the discharging end of the pull head one by one feeding device; the pull head vibration disk, the pull head one by one pushing mechanism, and the single pull head carrying and forward feeding mechanism are all electrically connected to the control system.

6. The zipper threading unit capable of being worn forward and backward according to claim 1, characterized in that: The slider flipping device comprises a flipping motor and a rotating shaft, one end of the rotating shaft is fixedly connected to the rotating output member of the flipping motor, and the other end is fixedly connected to the slider clamping device; the flipping motor is electrically connected to the control system.

7. A cutting, threading and stop-attaching integrated machine, comprising a zipper conveying device, a continuous zipper tape positioning device, a continuous zipper tape cutting device, a threading device and a stop-attaching device, characterized in that: The threading device adopts the zipper threading unit that can be threaded forwards and backwards as described in any one of claims 1 to 6.

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