A zipper cutting machine and its cutting method

Abstract

This invention belongs to the technical field of zipper production equipment, and particularly relates to a zipper cutting machine, including a feeding device and a cutting device installed on a workbench. Both the feeding device and the cutting device are configured as two working stations on the workbench. The cutting device includes a conveyor table and a cutting mechanism. The conveyor table is provided with a first conveyor track and a second conveyor track for placing and conveying the zipper. The width of the first and second conveyor tracks can be adjusted by an adjustment unit, and their widths remain consistent during adjustment. By setting adjustable-width conveyor tracks, this invention matches the width of the conveyor tracks with the width of the zipper to be cut, enabling stable conveying of the zipper, ensuring stable cutting, and preventing the zipper from having a slanted cut surface.

Description

Technical Field

[0001] This invention relates to the field of zipper production equipment technology, and in particular to a zipper cutting machine and its cutting method. Background Technology

[0002] In the production process of zippers, the zipper tape after preliminary processing needs to be cut according to the size requirements of the finished product. In related technologies, the cutting device is generally equipped with a pneumatic cylinder that can move up and down. The pneumatic cylinder drives the cutter to cut the zipper tape.

[0003] In the prior art, Chinese patent 200420092745.7 discloses a zipper cutting machine that performs cutting by heating and melting. By heating the cutter, the zipper cutting part is heated instantly, and the fibers are softened and cut.

[0004] However, during use, it was found that because the cutter needs to maintain a high temperature at all times, the quality requirements for the cutter are high, and the cutter is prone to damage and has a short service life. At the same time, the existing zipper cutting machine can only cut a single type of zipper. When cutting zippers of different widths, the conveyor track with a fixed width cannot stably convey zippers of different widths. The zipper is prone to bending in the conveyor track, resulting in a beveled cut surface, which affects the quality of the cut zipper. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a zipper cutting machine and a cutting method thereof to solve the problems in the background technology mentioned above.

[0006] In view of this, the present invention provides a zipper cutting machine, including a feeding device and a cutting device mounted on a workbench. The feeding device and the cutting device are both configured as two dual-station devices on the workbench, and each feeding device and the cutting device can simultaneously feed and cut two zippers. The cutting device includes a conveyor table mounted on the workbench, on which a first conveyor track and a second conveyor track are provided for placing and conveying zippers. A cutting mechanism is mounted on the conveyor table for cutting the chains in the first conveyor track and the second conveyor track.

[0007] The conveying platform includes a conveying frame and a first adjusting block, a second adjusting block, and a third adjusting block slidably disposed on the conveying frame. A first conveying track is formed by the first adjusting block and the second adjusting block being spaced apart, and a second conveying track is formed by the second adjusting block and the third adjusting block being spaced apart. The conveying platform also has an adjusting unit for adjusting the distance between the first adjusting block, the second adjusting block, and the third adjusting block. The adjusting unit is used to control the movement of the second adjusting block and the third adjusting block, and can ensure that the width of the first conveying track and the second conveying track are the same when controlling the movement.

[0008] In the above technical solution, the adjusting unit further includes an adjusting rod that passes through a first adjusting block, a second adjusting block, and a third adjusting block in sequence, with a knob at one end; a first lead screw sleeve fixedly fitted on the adjusting rod, a second adjusting block threadedly fitted outside the first lead screw sleeve, and a portion of the second adjusting block abutting against the first lead screw sleeve; a second lead screw sleeve slidably fitted on the adjusting rod, a third adjusting block threadedly fitted outside the second lead screw sleeve, and a portion of the third adjusting block abutting against the second lead screw sleeve; a sliding bearing slidably fitted on the adjusting rod, located between the first and second lead screw sleeves, with both ends abutting against the second lead screw sleeve and the second adjusting block, respectively; the first adjusting block is fixed on the conveyor table, a limit key is provided on the outside of the adjusting rod along its length, and a keyway is provided on the inside of the second lead screw sleeve for the limit key to be inserted and for the limit key to slide within it.

[0009] In the above technical solution, the first adjusting block, the second adjusting block and the third adjusting block are all provided with sliders on their sides for supporting the zipper and allowing the zipper to slide on them, and adjacent sliders are spaced apart.

[0010] In the above technical solution, the feeding device further includes guide rollers, which are arranged as upper and lower rollers, and each guide roller is provided with two circumferentially arranged guide grooves. The zipper is located between the two guide rollers and embedded in the guide grooves; a roller frame is installed on the worktable, and the guide rollers are rotatably installed on the roller frame through a rotating shaft.

[0011] In the above technical solution, the guide roller further includes a roller body and a first sleeve, a second sleeve, and a third sleeve sleeved on the roller body; the guide groove includes a first guide groove and a second guide groove, the first sleeve, the second sleeve, and the third sleeve are spaced apart, the first sleeve and the second sleeve are spaced apart to form a first guide groove, and the second sleeve and the third sleeve are spaced apart to form a second guide groove; the first sleeve is fixed to one end of the roller body, and the second sleeve and the third sleeve are both threaded onto the outside of the roller body and can rotate on the roller body.

[0012] In the above technical solution, the cutting mechanism further includes a mounting frame mounted on a conveyor table; a clamping unit and a cutting unit, the clamping unit being mounted on the mounting frame, the clamping unit being able to be inserted from the top into the first and second conveyor tracks to clamp the zipper, and the cutting unit being able to cut the zipper after the clamping unit clamps the zipper;

[0013] The clamping unit includes a lifting plate, which is slidably mounted on the mounting frame via a slide rail; two pressure cylinders, which are detachably mounted on the bottom of the lifting plate, with their bottom ends respectively inserted into the first and second conveying rails; a first electromagnet, mounted on the mounting frame; a second electromagnet, mounted on the lifting plate and located below the first electromagnet, which repel each other when energized; and a first spring, located at the bottom of the lifting plate, which provides an upward force to the lifting plate.

[0014] In the above technical solution, the cutting unit further includes an airflow channel located inside the pressure cylinder, with its output end facing the zipper; an air supply mechanism installed on the conveyor table, which is connected to the airflow channel via an air supply pipe; a heater installed on the air supply pipe for heating the gas inside the air supply pipe; a movable plate slidably disposed inside the pressure cylinder, with a cutter detachably mounted on its bottom; a second spring located at the bottom of the movable plate for providing an upward force to the movable plate; and a drive mechanism for controlling the movable plate and the cutter to descend and perform the cutting operation.

[0015] In the above technical solution, the driving mechanism further includes a movable plate, which is installed in the pressure cylinder via a slide rail and can move left and right in the pressure cylinder; an upper round-headed abutment block, fixed to the lower end of the movable plate; a lower round-headed abutment block, fixed to the upper end of the movable plate, which can cooperate with the upper round-headed abutment block to push the movable plate downward; a first telescopic airbag and a second telescopic airbag, which are respectively arranged on both sides of the movable plate and communicate with the airflow channel; an air inlet valve, which is installed on the gas input end of the first telescopic airbag and the second telescopic airbag; and an exhaust valve, which is installed at the bottom of the first telescopic airbag and the second telescopic airbag, with its output end facing the cutter.

[0016] A method for cutting a zipper, applicable to the aforementioned zipper cutting machine, includes the following steps:

[0017] S1 feeding: The zipper to be cut is arranged in two guide grooves on two conveyor tracks and guide rollers, and then the zipper is continuously conveyed by the belt feeding mechanism;

[0018] S2 Tightening: When the first electromagnet and the second electromagnet are energized, the first electromagnet and the second electromagnet generate a repulsive force, which drives the lifting plate to move downward. The bottom end of the pressure cylinder under the lifting plate is inserted into the conveying track and tightens the zipper in the conveying track, locking and fixing the zipper in the conveying track. The conveying mechanism stops conveying the zipper.

[0019] S3 Softening: The gas supply mechanism is activated, and the gas is heated by the heater to form high-temperature gas, which is then injected from the airflow channel of the pressure cylinder to the zipper to be cut, so that the zipper tape to be cut is softened by heat.

[0020] S4 Cutting: The air inlet valve of the first telescopic airbag and the exhaust valve of the second telescopic airbag allow gas in the airflow channel to enter the first telescopic airbag, pushing it to expand and extend. This causes the moving plate to move to the right and squeeze the second telescopic airbag. The gas in the second telescopic airbag is ejected from the exhaust valve and sprayed onto the cutter to clean the debris on the cutter. At the same time, the upper round head block moves to the right and pushes the lower round head block, causing the movable plate and the cutter on the movable plate to move downward and cut the softened zipper. After the movable plate continues to move to the right, the upper round head block disengages from the contact of the lower round head block. Under the action of the second spring, the movable plate drives the cutter to rise again and retract into the pressure cylinder.

[0021] S5 Double Cut: After completing one cutting action, close the air inlet valve of the first telescopic airbag and the exhaust valve of the second telescopic airbag, open the air inlet valve of the second telescopic airbag and the exhaust valve of the first telescopic airbag, push the second telescopic airbag to expand and extend, causing the moving plate to move to the left to squeeze the first telescopic airbag, and the gas in the first telescopic airbag is ejected from the exhaust valve and sprayed onto the cutter to clean the debris on the cutter. As the upper round head block moves to the left, it pushes the lower round head block again, causing the cutter to move downward again to perform a second cutting action.

[0022] S6 Reset: After the recutting is completed, the air supply mechanism stops supplying air, de-energizes the first and second electromagnets, and drives the lifting plate and pressure cylinder to move upward under the action of the first spring, releasing the clamp on the zipper, taking out the cut zipper, discharging it through the cutting device, and reopening the belt feeding mechanism to convey the zipper.

[0023] S7 cycle: Repeat steps S1 to S7 to complete the continuous cutting of the zipper.

[0024] In the above technical solution, further, a width adjustment step is included before step S1, adjusting the width of the two guide grooves and the two conveying tracks to fit the width of the zipper. This width adjustment step includes...

[0025] D1 Guide Groove Width Adjustment: Rotate the second and third sleeves on the roller body to adjust the distance between the first, second, and third sleeves so that the width of the two guide grooves matches the width of the zipper.

[0026] D2 Conveyor Track Width Adjustment: Rotating the knob drives the adjusting rod to rotate, causing the first and second lead screw sleeves to rotate accordingly. This causes the second and third adjusting blocks to move in the same direction, with the second and third adjusting blocks moving the same distance relative to the first and second lead screw sleeves. During movement, the second adjusting block pushes the sliding bearing and the second lead screw sleeve, causing the second and third adjusting blocks to move away from the first lead screw sleeve, simultaneously increasing the width of the two conveyor tracks. The increase in width of the first and second conveyor tracks is the same, thus changing the width of the two conveyor tracks to match the width of the zipper.

[0027] D3 Alignment: Reinstall the mounting frame and pressure cylinders so that the positions of the two pressure cylinders are aligned with the two conveyor tracks respectively.

[0028] The beneficial effects of this invention are:

[0029] 1. This invention employs multiple conveyor tracks, enabling simultaneous cutting of multiple zippers, thus improving work efficiency. Furthermore, it utilizes an adjustable conveyor table. When cutting zippers of different widths, rotating a knob drives the adjustment rod, first lead screw sleeve, and second lead screw sleeve to move the second and third adjustment blocks, thereby adjusting the width of the two conveyor tracks to match the width of the zipper to be cut. This improves the stability of the zipper conveying within the tracks, preventing the zipper from detaching from the tracks during transport. It also prevents the zipper from bending within the tracks, thus avoiding tilting of the cut surface and improving the cutting effect.

[0030] Meanwhile, the design allows for direct adjustment of both conveyor tracks to the same width when adjusting the width of the conveyor tracks, making adjustment convenient and quick without having to adjust each conveyor track individually. In conjunction with the two guide grooves on the guide rollers, the width of the two guide grooves can be adjusted by rotating the second and third sleeves, so that the guide grooves cooperate with the two conveyor tracks respectively, further ensuring the stable conveying of the zipper.

[0031] 2. By setting up a clamping unit, the zipper is clamped from the top by a pressure cylinder before cutting, preventing the zipper from moving during cutting. During clamping, high-temperature gas is injected and sprayed onto the area to be cut, softening the area and facilitating subsequent cutting. This reduces the force applied by the cutter, ensuring the cutter's lifespan. The softened zipper is less noisy during cutting and prevents fraying or frayed edges, improving cutting efficiency. Furthermore, the preheated gas is blown directly onto the zipper for softening, so the cutter only needs to contact the zipper during cutting. The cutter is not directly exposed to the gas, reducing heat exposure and extending its lifespan.

[0032] Meanwhile, a drive mechanism is installed during the cutting process. The zipper is cut by injecting gas into two telescopic air chambers. Combined with the preheating and softening air supply mechanism, cutting is convenient and eliminates the need for a separate mechanical drive, making control easy and cost-effective. The operation of the cutter is controlled by opening and closing two air inlet and outlet valves, ensuring convenient and stable control of the secondary cutting process. The purpose of the secondary cutting is to prevent the softened zipper from sticking together, ensuring a complete cut. Furthermore, during the cutting process, gas from the telescopic air chambers is ejected and sprayed onto the cutter, cleaning any debris adsorbed on the cutter, extending its lifespan, and ensuring stable zipper cutting. Attached Figure Description

[0033] 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, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of a specific embodiment of the present invention;

[0035] Figure 2 This is a top view schematic diagram of a specific embodiment of the present invention;

[0036] Figure 3 This is a top view of the cutting device in a specific embodiment of the present invention;

[0037] Figure 4 This is a top view of the conveyor platform in a specific embodiment of the present invention;

[0038] Figure 5 This is a cross-sectional schematic diagram of the conveyor table in a specific embodiment of the present invention;

[0039] Figure 6 This is a schematic cross-sectional view of the adjusting rod in a specific embodiment of the present invention;

[0040] Figure 7 This is a schematic diagram of the cutting device in a specific embodiment of the present invention;

[0041] Figure 8 This is a schematic diagram of the pressure cylinder in a specific embodiment of the present invention;

[0042] Figure 9 This is a schematic diagram of the feeding device in a specific embodiment of the present invention;

[0043] Figure 10 This is a schematic diagram of the guide roller structure in a specific embodiment of the present invention;

[0044] The diagram is marked as follows:

[0045] 100. Zipper;

[0046] 1. Workbench;

[0047] 2. Feeding device; 21. Guide roller; 211. First guide groove; 212. Second guide groove; 213. Roller body; 214. First sleeve; 215. Second sleeve; 216. Third sleeve; 22. Roller frame; 23. Rotating shaft;

[0048] 3. Cutting device; 31. Conveyor table; 311. First conveyor track; 312. Second conveyor track; 313. Conveyor frame; 314. First adjusting block; 315. Second adjusting block; 316. Third adjusting block; 317. Adjusting unit; 3171. Adjusting rod; 3172. Knob; 3173. First lead screw sleeve; 3174. Second lead screw sleeve; 3175. Sliding bearing; 3176. Limit key; 3177. Keyway; 318. Slider; 32. Cutting mechanism; 321. Mounting frame; 322. Tightening unit; 3221. Lifting plate; 32 22. Pressure cylinder; 3223. First electromagnet; 3224. Second electromagnet; 3225. First spring; 323. Cutting unit; 3231. Airflow channel; 3232. Air supply mechanism; 3233. Air supply pipe; 3234. Heater; 3235. Movable plate; 3236. Cutter; 3237. Second spring; 324. Drive mechanism; 3241. Moving plate; 3242. Upper round head stop block; 3243. Lower round head stop block; 3244. First telescopic airbag; 3245. Second telescopic airbag; 3246. Inlet valve; 3247. Exhaust valve;

[0049] 4. Discharge device; Detailed Implementation

[0050] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0051] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0052] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0053] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0054] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0055] Example 1

[0056] like Figure 1 and Figure 2 As shown, this embodiment discloses a zipper cutting machine. In a specific embodiment of the present invention, the zipper cutting machine includes a feeding device 2 and a cutting device 3 installed on a workbench 1. The feeding device 2 and the cutting device 3 are both configured as two dual-station operations on the workbench 1, and each feeding device 2 and the cutting device 3 can simultaneously feed and cut two zippers 100. In addition, a discharge device 4 for conveying the cut zippers 100 out is also installed on the workbench 1.

[0057] The cutting device 3 includes a conveyor table 31, which is installed on the workbench 1 and is provided with a first conveyor track 311 and a second conveyor track 312 for placing and conveying the zipper 100; and a cutting mechanism 32, which is installed on the conveyor table 31 and is used to cut the chain in the first conveyor track 311 and the second conveyor track 312.

[0058] Among them, such as Figure 4 and Figure 5As shown, the conveying platform 31 includes a conveying frame 313 and a first adjusting block 314, a second adjusting block 315, and a third adjusting block 316 slidably disposed on the conveying frame 313. A first conveying track 311 is formed by the first adjusting block 314 and the second adjusting block 315 spaced apart, and a second conveying track 312 is formed by the second adjusting block 315 and the third adjusting block 316 spaced apart. The conveying platform 31 also has an adjusting unit 317 for adjusting the distance between the first adjusting block 314, the second adjusting block 315, and the third adjusting block 316. The adjusting unit 317 is used to control the movement of the second adjusting block 315 and the third adjusting block 316, and can ensure that the width of the first conveying track 311 and the second conveying track 312 is the same when controlling the movement.

[0059] like Figure 5 and Figure 6 As shown, the adjustment unit 317 includes an adjustment rod 3171, which is horizontally arranged and passes through a first adjustment block 314, a second adjustment block 315, and a third adjustment block 316 in sequence, and has a knob 3172 at one end; a first lead screw sleeve 3173, which is fixedly sleeved on the adjustment rod 3171; a second adjustment block 315, which is threadedly sleeved outside the first lead screw sleeve 3173 and partially abuts against the first lead screw sleeve 3173; a second lead screw sleeve 3174, which is slidably sleeved on the adjustment rod 3171; a third adjustment block 316, which is threadedly sleeved outside the second lead screw sleeve 3174 and partially abuts against the second lead screw sleeve 3174; and a sliding bearing 3175, which is slidably sleeved on the adjustment rod 3171 and located between the first lead screw sleeve 3173 and the second lead screw sleeve 3174, with both ends abutting against the second lead screw sleeve 3174 and the second adjustment block 315, respectively.

[0060] The first adjusting block 314 is fixed on the conveyor table 31. The adjusting rod 3171 is provided with a limit key 3176 along its length direction on the outside. The second lead screw sleeve 3174 is provided with a keyway 3177 on the inside for the limit key 3176 to be inserted and for the limit key 3176 to slide within it. The setting of the limit key 3176 and the keyway 3177 can ensure that the second lead screw sleeve 3174 is rotated by the adjusting rod 3171 and can ensure the sliding between the two.

[0061] The sides of the first adjusting block 314, the second adjusting block 315, and the third adjusting block 316 are all provided with sliders 318 for supporting the zipper and allowing the zipper to slide on them. Adjacent sliders 318 are spaced apart. The sliders support the zipper. In other embodiments, in order to ensure that the middle of the bottom of the zipper has sufficient support, the sliders are replaced with slide grooves and slide plates, which are respectively set on the adjusting blocks on both sides. The slide plate on one adjusting block is inserted into the slide groove of the other adjusting block to ensure stable support for the zipper.

[0062] like Figure 9 and Figure 10 As shown, the feeding device 2 includes guide rollers 21, which are arranged as two, one above the other. Each guide roller 21 is provided with two circumferentially arranged guide grooves. The zipper is located between the two guide rollers 21 and embedded in the guide grooves. The roller frame 22 is installed on the worktable 1. The guide rollers 21 are rotatably installed on the roller frame 22 through the rotating shaft 23.

[0063] In this embodiment, a feeding mechanism is used to feed the zipper, and two guide rollers 21 serve as limiting and guiding mechanisms; in other embodiments, a motor can be installed on the roller frame 22 to drive the guide rollers 21 to rotate as the power to convey the zipper.

[0064] The guide roller 21 includes a roller body 213 and a first sleeve 214, a second sleeve 215, and a third sleeve 216 sleeved on the roller body 213. The guide groove includes a first guide groove 211 and a second guide groove 212. The first sleeve 214, the second sleeve 215, and the third sleeve 216 are spaced apart. The first guide groove 211 is formed between the first sleeve 214 and the second sleeve 215, and the second guide groove 212 is formed between the second sleeve 215 and the third sleeve 216. The first sleeve 214 is fixed to one end of the roller body 213. The second sleeve 215 and the third sleeve 216 are both threaded onto the outside of the roller body 213 and can rotate on the roller body 213.

[0065] During normal operation, the two guide rollers 21 limit and guide the zipper. The two zippers are respectively placed into the first conveying track 311 and the second conveying track 312. Then, the cutting mechanism 32 on the conveying table 31 cuts the zippers in the two conveying tracks. The cut zippers are discharged through the discharge device 4.

[0066] When cutting a wider zipper, first adjust the width of the two conveyor tracks. Rotating knob 3172 drives adjusting rod 3171, causing the first lead screw sleeve 3173 and the second lead screw sleeve 3174 to rotate accordingly. This causes the second adjusting block 315 and the third adjusting block 316 to move in the same direction. Since the first lead screw sleeve 3173 and the second lead screw sleeve 3174 rotate synchronously, the second adjusting block 315 and the third adjusting block 316 move the same distance relative to the first lead screw sleeve 3173 and the second lead screw sleeve 3174. At this time, the second adjusting block 315 moves away from the first adjusting block 314, and the first conveyor track 311 and the second conveyor track... The width of track 312 is increased; at the same time, due to the setting of sliding bearing 3175, when the second adjusting block 315 moves, it will push sliding bearing 3175 and second lead screw sleeve 3174, so that the second lead screw sleeve 3174 and the third adjusting block 316 move away from the first lead screw sleeve 3173. That is, the second adjusting block 315 will simultaneously push the third adjusting block 316 to move away from the first adjusting block 314 by the same distance, so that the width of the first conveying track 311 and the second conveying track 312 increases by the same amount. The width of the two conveying tracks is increased by the same amount, so that it can be adapted to the use of wider zipper cutting.

[0067] The width of the two guide grooves on the guide roller 21 can be adjusted by simply rotating the second sleeve 215 and the third sleeve 216. In other embodiments, in order to adjust the position of the two guide grooves on the roller body 213, the first sleeve 214 is also connected to the roller body 213 by a thread, so that all three sleeves can be moved and the position of the two guide grooves can be adjusted.

[0068] Through the above technical solution, the present invention adopts the setting of multiple conveying tracks, which can simultaneously cut multiple zippers, improving work efficiency. In addition, an adjustable conveyor table is adopted. When cutting zippers of different widths, rotating the knob drives the second and third adjusting blocks through the transmission of the adjusting rod, the first lead screw sleeve, and the second lead screw sleeve, thereby adjusting the width of the two conveying tracks to match the width of the zipper to be cut. This improves the stability of the zipper conveyed within the conveying tracks, prevents the zipper from leaving the tracks during conveying, and avoids the phenomenon of the zipper bending within the conveying tracks, which would cause the cutting surface to tilt, thus improving the cutting effect.

[0069] Meanwhile, the design allows for direct adjustment of both conveyor tracks to the same width when adjusting the width of the conveyor tracks, making adjustment convenient and quick without having to adjust each conveyor track individually. In conjunction with the two guide grooves on the guide rollers, the width of the two guide grooves can be adjusted by rotating the second and third sleeves, so that the guide grooves cooperate with the two conveyor tracks respectively, further ensuring the stable conveying of the zipper.

[0070] Example 2

[0071] This embodiment provides a zipper cutting machine, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0072] like Figure 3 and Figure 7 As shown, the cutting mechanism 32 includes a mounting frame 321 mounted on the conveyor table 31; a clamping unit 322 and a cutting unit 323. The clamping unit 322 is mounted on the mounting frame 321 and can be inserted from the top into the first conveyor track 311 and the second conveyor track 312 to clamp the zipper. The cutting unit 323 can cut the zipper after the clamping unit 322 clamps the zipper.

[0073] The two ends of the mounting frame 321 are bolted to the first adjusting block 314 and the third adjusting block 316. When adjusting the width of the conveying track, the mounting frame 321 is removed for adjustment. After adjustment, the mounting frame 321 is rotated to a suitable position to connect one end of the mounting frame 321 to the third adjusting block 316.

[0074] The clamping unit 322 includes a lifting plate 3221, which is slidably mounted on the mounting frame 321 via a slide rail; two pressure cylinders 3222, which are detachably mounted on the bottom of the lifting plate 3221, with their bottom ends respectively inserted into the first conveying track 311 and the second conveying track 312. The pressure cylinders 3222 are connected to the lifting plate 3221 by bolts, which facilitates disassembly and allows the position of the pressure cylinders 3222 to be adjusted according to the position of the conveying track to ensure alignment; a first electromagnet 3223, which is mounted on the mounting frame 321; a second electromagnet 3224, which is mounted on the lifting plate 3221 and located at the bottom of the first electromagnet 3223. When the first electromagnet 3223 and the second electromagnet 3224 are energized, they repel each other; and a first spring 3225, which is located at the bottom of the lifting plate 3221 and provides an upward force to the lifting plate 3221. To ensure the stability of the first spring 3225's return, a telescopic rod is provided, and the first spring 3225 is sleeved on the telescopic rod.

[0075] like Figure 8 As shown, the cutting unit 323 includes an airflow channel 3231, which is located inside the pressure cylinder 3222 and has its output end facing the zipper; an air supply mechanism 3232, which is installed on the conveyor table 31 and is connected to the airflow channel 3231 through an air supply pipe 3233; a heater 3234, which is installed on the air supply pipe 3233 and is used to heat the gas inside the air supply pipe 3233; a movable plate 3235, which is slidably disposed inside the pressure cylinder 3222 and has a cutter 3236 detachably mounted on its bottom; a second spring 3237, which is located at the bottom of the movable plate 3235 and provides an upward force to the movable plate 3235; and a drive mechanism 324, which controls the movable plate 3235 and the cutter 3236 to descend for cutting.

[0076] The drive mechanism 324 includes a movable plate 3241, which is mounted inside the pressure cylinder 3222 via a slide rail and can move left and right within the pressure cylinder 3222; an upper round-headed abutment 3242, which is fixed to the lower end of the movable plate 3241; a lower round-headed abutment 3243, which is fixed to the upper end of the movable plate 3235 and can cooperate with the upper round-headed abutment 3242 to push the movable plate 3235 downward; a first telescopic airbag 3244 and a second telescopic airbag 3245, which are respectively disposed on both sides of the movable plate 3241 and communicate with the airflow channel 3231; an air inlet valve 3246, which is installed on the gas inlet end of the first telescopic airbag 3244 and the second telescopic airbag 3245; and an exhaust valve 3247, which is installed at the bottom of the first telescopic airbag 3244 and the second telescopic airbag 3245, with its output end facing the cutter 3236.

[0077] Both the intake valve 3246 and the exhaust valve 3247 are configured as one-way valves.

[0078] In addition, in order to perform the cutting work in a timely manner and improve work efficiency, a first contact point is provided at the bottom of the lifting plate 3221 and a second contact point is provided on the conveyor table 31. When the lifting plate 3221 lowers the pressure cylinder 3222 to press the zipper, the first contact point and the second contact point are connected, and the air supply mechanism 3232 starts to work to deliver hot air to the part of the zipper to be cut.

[0079] During the cutting operation, the first electromagnet 3223 and the second electromagnet 3224 are energized first. The first electromagnet 3223 and the second electromagnet 3224 generate a repulsive force, which drives the lifting plate 3221 to move downward. The bottom end of the pressure cylinder 3222 under the lifting plate 3221 is inserted into the conveying track and presses against the zipper in the conveying track to fix the zipper in the conveying track. Then, the gas supply mechanism 3232 is started. The gas is heated by the heater 3234 to form high-temperature gas and enters the airflow channel 3231 of the pressure cylinder 3222 through the gas supply pipe 3233. The high-temperature gas is discharged to the zipper to be cut, so that the zipper belt to be cut softens.

[0080] Then, the air inlet valve 3246 of the first telescopic airbag 3244 and the exhaust valve 3247 of the second telescopic airbag 3245 are opened. As gas enters the first telescopic airbag 3244, it pushes the first telescopic airbag 3244 to expand and extend, causing the moving plate 3241 to move to the right. When moving to the right, the upper round head abutment block 3242 moves to the right and pushes the lower round head abutment block, causing the movable plate 3235 and the cutter 3236 on the movable plate 3235 to move downward, cutting the softened zipper. After the upper round head abutment block 3242 disengages from the contact of the lower round head abutment block 3243, the second spring 32... Under the action of 37, the movable plate 3235 drives the cutter 3236 to rise again and retract into the pressure cylinder 3222; then the air inlet valve 3246 of the first telescopic airbag 3244 and the exhaust valve 3247 of the second telescopic airbag 3245 are closed, the air inlet valve 3246 of the second telescopic airbag 3245 and the exhaust valve 3247 of the first telescopic airbag 3244 are opened, pushing the second telescopic airbag 3245 to expand and extend, driving the movable plate 3241 to move to the left, and the upper round head block 3242 pushes the lower round head block again as it moves to the left and right, so that the cutter 3236 moves down again to perform a second cut;

[0081] While controlling the movement of the movable plate 3241 to cut, the movable plate 3241 compresses the second telescopic airbag 3245. The gas inside the second telescopic airbag 3245 is ejected from the exhaust valve 3247 and sprayed onto the cutter 3236 to clean the debris on the cutter 3236. Similarly, during the second cutting, the gas inside the first telescopic airbag 3244 is ejected from the exhaust valve 3247 and sprayed onto the cutter 3236 to clean the debris on the cutter 3236.

[0082] After the zipper is cut, the gas supply is stopped, the first electromagnet 3223 and the second electromagnet 3224 are de-energized, and the lifting plate 3221 and the pressure cylinder 3222 are moved upward under the action of the first spring 3225, releasing the clamp on the zipper, taking out the cut zipper, and after re-inputting the zipper, the above operation is repeated to repeatedly cut the zipper.

[0083] In addition, in order to ensure that the moving plate 3241 can be pushed under sufficient air pressure, an air valve is provided at the output end of the airflow channel 3231. When the control cutter 3236 moves, the air valve is closed to stop the hot air from being discharged, ensuring that there is enough air pressure in the telescopic airbag to push the moving plate 3241 to move.

[0084] In other embodiments, to ensure gas injection, a jet nozzle can be installed at the output end of the airflow channel to inject the gas into the zipper in a high-pressure jet form; and a heater can also be set in the airflow channel to avoid the gas in the input value telescopic airbag being high-temperature gas; in addition, a cooling mechanism can be set at the end of the discharge device or the conveying track to cool the cut zipper and prevent the cut part of the zipper from remaining in a softened state and affecting subsequent conveying.

[0085] Through the above technical solution, by setting up a clamping unit, the zipper is clamped from the top by a pressure cylinder before cutting, preventing the zipper from moving during cutting. During clamping, high-temperature gas is injected and sprayed onto the area to be cut, softening the area by high-temperature spraying. This softening of the zipper facilitates subsequent cutting, reduces the force applied by the cutter, ensures the cutter's service life, and reduces noise during cutting. It also prevents fraying or frayed edges at the cut, improving the cutting effect. Furthermore, the preheated gas is blown directly onto the zipper for softening, so the cutter only needs to contact the zipper during cutting. The cutter is not directly blown by the gas, reducing heat exposure and extending its service life.

[0086] Meanwhile, a drive mechanism is installed during the cutting process. The zipper is cut by injecting gas into two telescopic air chambers. Combined with the preheating and softening air supply mechanism, cutting is convenient and eliminates the need for a separate mechanical drive, making control easy and cost-effective. The operation of the cutter is controlled by opening and closing two air inlet and outlet valves, ensuring convenient and stable control of the secondary cutting process. The purpose of the secondary cutting is to prevent the softened zipper from sticking together, ensuring a complete cut. Furthermore, during the cutting process, gas from the telescopic air chambers is ejected and sprayed onto the cutter, cleaning any debris adsorbed on the cutter, extending its lifespan, and ensuring stable zipper cutting.

[0087] Example 3

[0088] This invention also discloses a method for cutting zippers, applicable to a zipper cutting machine as described in Embodiment 2. In a specific embodiment of this invention, the method includes the following steps:

[0089] S1 feeding: The zipper to be cut is arranged in two guide grooves on two conveyor tracks and guide rollers, and then the zipper is continuously conveyed by the belt feeding mechanism;

[0090] S2 Tightening: When the first electromagnet and the second electromagnet are energized, the first electromagnet and the second electromagnet generate a repulsive force, which drives the lifting plate to move downward. The bottom end of the pressure cylinder under the lifting plate is inserted into the conveying track and tightens the zipper in the conveying track, locking and fixing the zipper in the conveying track. The conveying mechanism stops conveying the zipper.

[0091] S3 Softening: The gas supply mechanism is activated, and the gas is heated by the heater to form high-temperature gas, which is then injected from the airflow channel of the pressure cylinder to the zipper to be cut, so that the zipper tape to be cut is softened by heat.

[0092] S4 Cutting: The air inlet valve of the first telescopic airbag and the exhaust valve of the second telescopic airbag allow gas in the airflow channel to enter the first telescopic airbag, pushing it to expand and extend. This causes the moving plate to move to the right and squeeze the second telescopic airbag. The gas in the second telescopic airbag is ejected from the exhaust valve and sprayed onto the cutter to clean the debris on the cutter. At the same time, the upper round head block moves to the right and pushes the lower round head block, causing the movable plate and the cutter on the movable plate to move downward and cut the softened zipper. After the movable plate continues to move to the right, the upper round head block disengages from the contact of the lower round head block. Under the action of the second spring, the movable plate drives the cutter to rise again and retract into the pressure cylinder.

[0093] S5 Double Cut: After completing one cutting action, close the air inlet valve of the first telescopic airbag and the exhaust valve of the second telescopic airbag, open the air inlet valve of the second telescopic airbag and the exhaust valve of the first telescopic airbag, push the second telescopic airbag to expand and extend, causing the moving plate to move to the left to squeeze the first telescopic airbag, and the gas in the first telescopic airbag is ejected from the exhaust valve and sprayed onto the cutter to clean the debris on the cutter. As the upper round head block moves to the left, it pushes the lower round head block again, causing the cutter to move downward again to perform a second cutting action.

[0094] S6 Reset: After the recutting is completed, the air supply mechanism stops supplying air, de-energizes the first and second electromagnets, and drives the lifting plate and pressure cylinder to move upward under the action of the first spring, releasing the clamp on the zipper, taking out the cut zipper, discharging it through the cutting device, and reopening the belt feeding mechanism to convey the zipper.

[0095] S7 cycle: Repeat steps S1 to S7 to complete the continuous cutting of the zipper.

[0096] In addition, a width adjustment step is included before step S1, which adjusts the width of the two guide grooves and the two conveyor tracks to fit the width of the zipper. This width adjustment step includes...

[0097] D1 Guide Groove Width Adjustment: Rotate the second and third sleeves on the roller body to adjust the distance between the first, second, and third sleeves so that the width of the two guide grooves matches the width of the zipper.

[0098] D2 Conveyor Track Width Adjustment: Rotating the knob drives the adjusting rod to rotate, causing the first and second lead screw sleeves to rotate accordingly. This causes the second and third adjusting blocks to move in the same direction, with the second and third adjusting blocks moving the same distance relative to the first and second lead screw sleeves. During movement, the second adjusting block pushes the sliding bearing and the second lead screw sleeve, causing the second and third adjusting blocks to move away from the first lead screw sleeve, simultaneously increasing the width of the two conveyor tracks. The increase in width of the first and second conveyor tracks is the same, thus changing the width of the two conveyor tracks to match the width of the zipper.

[0099] D3 Alignment: Reinstall the mounting frame and pressure cylinders so that the positions of the two pressure cylinders are aligned with the two conveyor tracks respectively.

[0100] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A zipper cutting machine, comprising a feeding device and a cutting device mounted on a workbench, characterized in that: both the feeding device and the cutting device are arranged as two on the workbench, and each feeding device and cutting device can simultaneously feed and cut two zippers; the cutting device comprises a conveying table mounted on the workbench, and a first conveying track and a second conveying track are arranged on the conveying table for placing and conveying zippers; a cutting mechanism mounted on the conveying table for cutting the zippers in the first conveying track and the second conveying track; wherein the conveying table comprises a conveying frame, and a first adjusting block, a second adjusting block and a third adjusting block slidingly arranged on the conveying frame, the first adjusting block and the second adjusting block are arranged with a spacing to form the first conveying track, and the second adjusting block and the third adjusting block are arranged with a spacing to form the second conveying track; the conveying table further has an adjusting unit for adjusting the distance between the first adjusting block, the second adjusting block and the third adjusting block, the adjusting unit is used to control the movement of the second adjusting block and the third adjusting block, and the width of the first conveying track and the second conveying track can be ensured to be the same when the movement is controlled; the adjusting unit comprises: an adjusting rod sequentially penetrating through the first adjusting block, the second adjusting block and the third adjusting block, and a knob is arranged at one end of the adjusting rod; a first screw rod sleeve fixedly sleeved on the adjusting rod, the second adjusting block is threadedly sleeved outside the first screw rod sleeve, and the second adjusting block is in abutment with the first screw rod sleeve; a second screw rod sleeve slidingly sleeved on the adjusting rod, the third adjusting block is threadedly sleeved outside the second screw rod sleeve, and the third adjusting block is in abutment with the second screw rod sleeve; a sliding bearing slidingly sleeved on the adjusting rod between the first screw rod sleeve and the second screw rod sleeve, and the two ends of the sliding bearing are in abutment with the second screw rod sleeve and the second adjusting block, respectively; the first adjusting block is fixed on the conveying table, a limiting key is arranged on the outside of the adjusting rod along the length direction of the adjusting rod, and a key groove is arranged on the inside of the second screw rod sleeve for the limiting key to be inserted and slide therein; the side portions of the first adjusting block, the second adjusting block and the third adjusting block are each provided with a sliding block for carrying and sliding the zipper thereon, and the adjacent sliding blocks are arranged with a spacing therebetween; the cutting mechanism comprises: a mounting frame mounted on the conveying table; a pressing unit and a cutting unit, the pressing unit is mounted on the mounting frame, the pressing unit can press the zippers from the top into the first conveying track and the second conveying track, and the cutting unit can cut the zippers after the pressing unit presses the zippers; wherein the pressing unit comprises: a lifting plate slidingly arranged on the mounting frame through a sliding rail; two pressure cylinders detachably mounted on the bottom of the lifting plate, the bottom ends of the pressure cylinders can be inserted into the first conveying track and the second conveying track, respectively; a first electromagnet mounted on the mounting frame; a second electromagnet mounted on the lifting plate and located at the bottom of the first electromagnet, the first electromagnet and the second electromagnet repel each other when electrified; a first spring arranged at the bottom of the lifting plate to give the lifting plate an upward moving force.

2. The slide fastener cutting machine according to claim 1, wherein: the feeding device comprises: The guide roller is arranged in two, each of which is provided with two annular guide grooves, and the zipper is located between the two guide rollers and is embedded in the guide grooves. The roller frame is installed on the workbench, and the guide roller is rotatably installed on the roller frame through a rotating shaft.

3. A slide cutting machine according to claim 2, wherein: The guide roller comprises: a roller body, a first sleeve, a second sleeve and a third sleeve sleeved on the roller body; the guide grooves comprise a first guide groove and a second guide groove, and the first sleeve, the second sleeve and the third sleeve are arranged at intervals, the first guide groove is formed between the first sleeve and the second sleeve, and the second guide groove is formed between the second sleeve and the third sleeve; the first sleeve is fixed at one end of the roller body, and the second sleeve and the third sleeve are threadedly sleeved outside the roller body and can rotate on the roller body.

4. The slide fastener cutting machine according to claim 1, wherein: The cutting unit comprises: an airflow channel formed in the compression cylinder, with an output end facing the zipper; a gas supply mechanism installed on the conveying table, which communicates with the airflow channel through a gas supply pipe; a heater installed on the gas supply pipe for heating the gas inside the gas supply pipe; a movable plate slidably arranged inside the compression cylinder, with a cutting knife detachably installed at the bottom of the movable plate; a second spring located at the bottom of the movable plate, giving the movable plate an upward moving force; a driving mechanism for controlling the movable plate and the cutting knife to descend for cutting work.

5. A slide cutting machine according to claim 4, wherein: The driving mechanism comprises: a moving plate installed in the compression cylinder through a sliding rail and capable of moving left and right in the compression cylinder; an upper round head stopper fixed at the lower end of the moving plate; a lower round head stopper fixed at the upper end of the movable plate and capable of cooperating with the upper round head stopper to drive the movable plate downward; a first telescopic air bag and a second telescopic air bag arranged on the two sides of the moving plate and communicating with the airflow channel; an air inlet valve installed on the gas input end of the first telescopic air bag and the second telescopic air bag; an air outlet valve installed at the bottom of the first telescopic air bag and the second telescopic air bag, with an output end facing the cutting knife.

6. A method of cutting a slide fastener, which is suitable for use in a slide fastener cutting machine according to any one of claims 1 to 5, characterized in that, The method comprises the following steps: S1: feeding: arranging the to-be-cut zipper on the two guide grooves on the two conveying tracks and the guide roller, and then continuously conveying the zipper through the belt conveying mechanism; S2: clamping: energizing the first electromagnet and the second electromagnet, the first electromagnet and the second electromagnet generate a repelling force, driving the lifting plate to move downward, the bottom end of the compression cylinder under the lifting plate is inserted into the conveying track and clamps the zipper in the conveying track, the zipper in the conveying track is locked and fixed, and the belt conveying mechanism stops conveying the zipper; S3: softening: starting the gas supply mechanism, the gas heated by the heater forms high-temperature gas which is sprayed from the airflow channel of the compression cylinder to the to-be-cut part of the zipper, so that the to-be-cut part of the zipper is heated and softened; S4 cutting: the air inlet valve of the first telescopic air bag and the air outlet valve of the second telescopic air bag are cut off, the gas in the gas flow channel enters the first telescopic air bag to push the first telescopic air bag to expand and stretch, the moving plate is driven to move rightward to press the second telescopic air bag, the gas in the second telescopic air bag is sprayed out from the air outlet valve and sprayed onto the cutter to clean the cutter, the upper dome abutting block is driven to move rightward to push the lower dome abutting block, the movable plate and the cutter on the movable plate are driven to move downward to cut the softened zipper, the upper dome abutting block is separated from the lower dome abutting block after the moving plate continues to move rightward, and the movable plate drives the cutter to rise again under the action of the second spring and retract into the compression cylinder; S5 re-cutting: after the cutting is completed, the air inlet valve of the first telescopic air bag and the air outlet valve of the second telescopic air bag are closed, the air inlet valve of the second telescopic air bag and the air outlet valve of the first telescopic air bag are opened, the second telescopic air bag is pushed to expand and stretch to drive the moving plate to move leftward to press the first telescopic air bag, the gas in the first telescopic air bag is sprayed out from the air outlet valve and sprayed onto the cutter to clean the cutter, the upper dome abutting block is driven to move leftward to push the lower dome abutting block again, and the cutter is driven to move downward again to perform a secondary cutting action; S6 resetting: after the re-cutting is completed, the gas supply mechanism stops supplying gas, the first electromagnet and the second electromagnet are powered off, the lifting plate and the compression cylinder are driven to move upward under the action of the first spring, the clamping on the zipper is released, the cut zipper is taken out, the cutting device is used to discharge the cut zipper, and the belt conveying mechanism is opened again to convey the zipper; S7 circulation: the steps S1 to S7 are repeatedly circulated to complete the continuous cutting of the zipper.

7. The method of cutting a slide fastener according to claim 6, characterized in that: Before the step S1, a width adjusting step is further included, which includes D1 guiding groove width adjusting: the second sleeve and the third sleeve on the roller body are rotated to adjust the distance between the first sleeve, the second sleeve and the third sleeve, so that the width of the two guiding grooves matches the width of the zipper; D2 conveying track width adjusting: the knob is rotated to drive the adjusting rod to rotate, the first screw sleeve and the second screw sleeve are rotated, so that the second adjusting block and the third adjusting block move in the same direction, the moving distance of the second adjusting block and the third adjusting block relative to the first screw sleeve and the second screw sleeve is consistent, when the second adjusting block moves, the second adjusting block pushes the sliding bearing and the second screw sleeve, so that the second screw sleeve and the third adjusting block move away from the first screw sleeve, the width of the two conveying tracks is adjusted at the same time, the width of the first conveying track and the second conveying track is increased by the same amount, and the width of the two conveying tracks is changed to match the width of the zipper; D3 alignment: the installation frame and the compression cylinder are reinstalled, and the positions of the two compression cylinders are aligned with the two conveying tracks respectively.

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