CN115922815A - Zipper cutting machine and cutting method thereof - Google Patents

Abstract

The invention belongs to the technical field of zipper production equipment, and particularly relates to a zipper cutting machine which comprises a feeding device and a cutting device which are arranged on a workbench, wherein the feeding device and the cutting device are arranged on the workbench and are two in double-station work; the cutting device comprises a conveying table and a cutting mechanism, wherein a first conveying rail and a second conveying rail for placing and conveying the zipper are arranged on the conveying table, the width of the first conveying rail and the width of the second conveying rail can be controlled and adjusted by an adjusting unit, and the widths of the first conveying rail and the second conveying rail are always consistent when the first conveying rail and the second conveying rail are adjusted; the width of the conveying track is matched with the width of the zipper to be cut through the arrangement of the conveying track with the adjustable width, so that the zipper can be stably conveyed, the stability of cutting work is ensured, and the phenomenon that the cut surface of the zipper is inclined is avoided.

Description

Zipper cutting machine and cutting method thereof

Technical Field

The invention relates to the technical field of zipper production equipment, in particular to a zipper cutting machine and a zipper cutting method.

Background

In the production process of the zipper, the primarily treated zipper tape is required to be cut according to the size requirement of a finished product, in the related technology, a cutting device is generally provided with a pneumatic cylinder capable of moving up and down, and the pneumatic cylinder drives a cutter to cut the zipper tape;

in the prior art, chinese patent 200420092745.7 discloses a zipper cutting machine, which performs cutting work by heating and fusing, wherein a cutter is heated, a zipper cutting part is instantly heated, and fibers are softened and cut;

however, in the using process, the cutter is always required to be kept at a high temperature, so that the requirement on the quality of the cutter is high, the cutter is easy to damage, and the service life is short; meanwhile, the existing zipper cutting machine can only cut the zippers of a single model, when the zippers with different widths are cut, the conveying track with the unchangeable width is difficult to stably convey the zippers with different widths, and the zippers are easy to bend in the conveying track to cause the cut surfaces to be inclined planes, so that the quality of cutting the zippers is influenced.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a zipper cutting machine and a zipper cutting method, which are used for solving the problems in the prior art.

In view of the above, the invention provides a zipper cutting machine, which comprises a feeding device and a cutting device, wherein the feeding device and the cutting device are arranged on a workbench, the two feeding devices and the two cutting devices are arranged on the workbench and work at double stations, and each feeding device and each cutting device can feed and cut two zippers simultaneously; the cutting device comprises a conveying table, a first conveying rail and a second conveying rail, wherein the conveying table is arranged on the workbench, and the first conveying rail and the second conveying rail are used for placing and conveying zippers; the cutting mechanism is arranged on the conveying table and used for cutting off the chains in the first conveying track and the second conveying track;

the conveying table comprises a conveying frame, a first adjusting block, a second adjusting block and a third adjusting block, wherein the first adjusting block, the second adjusting block and the third adjusting block are arranged on the conveying frame in a sliding mode; the conveying table is also provided with an adjusting unit used for adjusting the distance between the first adjusting block, the second adjusting block and the third adjusting block, the adjusting unit is used for controlling the movement of the second adjusting block and the third adjusting block, and the width of the first conveying track and the width of the second conveying track can be ensured to be the same when the movement is controlled.

In the above technical solution, further, the adjusting unit includes an adjusting rod, which sequentially passes through the first adjusting block, the second adjusting block and the third adjusting block, and one end of which is provided with a knob; the first screw rod sleeve is fixedly sleeved on the adjusting rod, the second adjusting block is sleeved outside the first screw rod sleeve in a threaded manner, and the second adjusting block is partially abutted to the first screw rod sleeve; the second screw rod sleeve is sleeved on the adjusting rod in a sliding manner, the third adjusting block is sleeved outside the second screw rod sleeve in a threaded manner, and the third adjusting block is partially abutted against the second screw rod sleeve; the sliding bearing is sleeved on the adjusting rod in a sliding mode, is positioned between the first screw rod sleeve and the second screw rod sleeve, and two ends of the sliding bearing are respectively abutted against the second screw rod sleeve and the second adjusting block; the first adjusting block is fixed on the conveying table, a limiting key is arranged outside the adjusting rod along the length direction of the adjusting rod, and a key groove for the limiting key to be inserted into and for the limiting key to slide in is formed in the inner side of the second screw rod sleeve.

In the above technical solution, further, the side portions of the first adjusting block, the second adjusting block and the third adjusting block are provided with sliders for bearing the zipper and allowing the zipper to slide thereon, and the adjacent sliders are arranged at intervals.

In the above technical solution, further, the feeding device includes two guide rollers arranged up and down, each guide roller is provided with two guide grooves arranged annularly, and the zipper is located between the two guide rollers and embedded in the guide grooves; the roller frame is installed on the workbench, and the guide roller is installed on the roller frame through the rotation of the rotating shaft.

In the above technical solution, further, the guide roller includes a roller body, and a first sleeve, a second sleeve and a third sleeve that are sleeved on the roller body; the guide grooves comprise a first guide groove and a second guide groove, 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 at intervals, and the second guide groove is formed between the second sleeve and the third sleeve at intervals; the first sleeve is fixed at one end of the roller body, and the second sleeve and the third sleeve are both sleeved outside the roller body in a threaded manner and can rotate on the roller body.

In the above technical solution, further, the cutting mechanism includes an installation frame, which is installed on the conveying table; the pushing unit is arranged on the mounting frame and can be inserted into the first conveying track and the second conveying track from the top to press the zipper tightly, and the cutting unit can cut the zipper after the pushing unit pushes the zipper tightly;

the jacking unit comprises a lifting plate and is arranged on the mounting frame in a sliding manner through a sliding rail; the two pressing cylinders are detachably mounted at the bottom of the lifting plate, and the bottom ends of the two pressing cylinders are respectively inserted into the first conveying rail and the second conveying rail; the first electromagnet is arranged on the mounting frame; the second electromagnet is arranged on the lifting plate and positioned at the bottom of the first electromagnet, and the first electromagnet and the second electromagnet repel each other when being electrified; the first spring is arranged at the bottom of the lifting plate and provides upward moving force for the lifting plate.

In the above technical solution, further, the cutting unit includes an airflow channel opened in the pressure cylinder, and an output end of the airflow channel faces the zipper; the air supply mechanism is arranged on the conveying table and is communicated with the air flow channel through an air supply pipe; the heater is arranged on the gas supply pipe and used for heating gas inside the gas supply pipe; the movable plate is arranged in the pressing cylinder in a sliding mode, and the bottom of the movable plate is detachably provided with a cutter; the second spring is arranged at the bottom of the movable plate and provides upward moving force for the movable plate; and the driving mechanism is used for controlling the movable plate and the cutter to descend for cutting-off work.

In the above technical solution, further, the driving mechanism includes a moving plate, which is installed in the pressing cylinder through a slide rail and can move left and right in the pressing cylinder; the upper round head abutting block is fixed at the lower end of the moving plate; the lower round-head abutting block is fixed at the upper end of the movable plate and can be matched with the upper round-head abutting block to push the movable plate downwards; the first telescopic air bag and the second telescopic air bag are respectively arranged on two sides of the moving plate and are communicated with the air flow channel; the air inlet valve is arranged on the gas input ends of the first telescopic air bag and the second telescopic air bag; and the exhaust valve is arranged at the bottoms of the first telescopic air bag and the second telescopic air bag, and the output end of the exhaust valve faces the cutter.

A zipper cutting method is suitable for the zipper cutting machine and comprises the following steps:

s1, feeding: arranging the zippers to be cut in the two guide grooves on the two conveying tracks and the guide roller, and then continuously conveying the zippers through the belt conveying mechanism;

s2, tightly pushing: the first electromagnet and the second electromagnet are electrified, the first electromagnet and the second electromagnet generate repulsive force to drive the lifting plate to move downwards, the bottom end of the pressing cylinder below the lifting plate is inserted into the conveying track and tightly pushes the zipper in the conveying track, the zipper in the conveying track is locked and fixed, and the belt feeding mechanism stops conveying the zipper;

s3, softening: starting the gas supply mechanism, wherein high-temperature gas formed after the gas is heated by the heater is sprayed to the to-be-cut part of the zipper from the gas flow channel of the pressing cylinder, so that the tape cut part of the zipper is heated and softened;

s4, cutting: the air in the air flow channel enters the first telescopic air bag to push the first telescopic air bag to expand and extend, the moving plate is driven to move rightwards to extrude the second telescopic air bag, the air in the second telescopic air bag is sprayed out of the air outlet valve and is sprayed onto the cutter to clean scraps on the cutter, meanwhile, the upper round head abutting block abuts against the lower round head abutting block along with the rightward movement, the moving plate and the cutter on the moving plate are driven to move downwards to cut off the softened zipper, the upper round head abutting block is separated from the contact of the lower round head abutting block after the moving plate continues to move rightwards, and the moving plate drives the cutter to ascend and contract into the pressing cylinder again under the action of the second spring;

s5, recut: after the primary cutting-off action is completed, an air inlet valve of the first telescopic air bag and an air outlet valve of the second telescopic air bag are closed, an air inlet valve of the second telescopic air bag and an air outlet valve of the first telescopic air bag are opened, the second telescopic air bag is pushed to expand and extend to drive the moving plate to move leftwards to extrude the first telescopic air bag, air in the first telescopic air bag is sprayed out from the air outlet valve to be sprayed onto the cutter, scraps on the cutter are cleaned, the upper round head abutting block moves leftwards to abut against the lower round head abutting block again, and the cutter moves downwards again to perform secondary cutting-off action;

s6, resetting: after the repeated cutting is finished, stopping supplying air by the air supply mechanism, powering off the first electromagnet and the second electromagnet, driving the lifting plate and the pressing cylinder to move upwards under the action of the first spring, loosening the clamping of the zipper, taking out the cut zipper, discharging through the cutting device, and reopening the belt conveying mechanism to convey the zipper;

and S7, circulation: and (5) circularly repeating the step (S1) to the step (S7) to finish the continuous cutting work of the zipper.

In the above technical solution, further, before the step S1, a width adjusting step is further included, the width of the two guide grooves and the width of the two conveying tracks are adjusted to be adapted to the width of the zipper, and the width adjusting step includes

D1, width adjustment of a guide groove: rotating the second sleeve and the third sleeve on the roller body, and adjusting the distance among the first sleeve, the second sleeve and the third sleeve to enable the width of the two guide grooves to be matched with the width of the zipper;

d2, width adjustment of a conveying track: the rotating knob drives the adjusting rod to rotate, the first screw rod sleeve and the second screw rod sleeve rotate along with the adjusting rod, so that the second adjusting block and the third adjusting block move in the same direction, the moving distances of the second adjusting block and the third adjusting block relative to the first screw rod sleeve and the second screw rod sleeve are consistent, the second adjusting block pushes the sliding bearing and the second screw rod sleeve during moving, the second screw rod sleeve and the third adjusting block move in the direction away from the first screw rod sleeve, the width of the two conveying tracks is synchronously increased and adjusted, the width increasing amount of the first conveying track and the width increasing amount of the second conveying track are the same, and the width of the two conveying tracks is changed to enable the width of the two conveying tracks to be matched with the width of the zipper.

D3 alignment: and reinstalling the mounting frame and the pressing barrels so that the positions of the two pressing barrels are respectively aligned with the two conveying rails.

The invention has the beneficial effects that:

1. the adjustable conveying table is adopted, when zippers with different widths are cut off, the knob is rotated, the second adjusting block and the third adjusting block are driven to move through transmission of the adjusting rod, the first screw rod sleeve and the second screw rod sleeve, the widths of the two conveying tracks can be adjusted to be matched with the widths of the zippers to be cut off, the stability of conveying the zippers in the conveying tracks is improved, the zippers are prevented from being separated from the tracks during conveying, the phenomenon that the cut-off surfaces are inclined due to bending of the zippers in the conveying tracks is avoided, and the cutting-off effect is improved;

meanwhile, the two conveying rails can be directly adjusted to be the same width when the width of the conveying rails is adjusted in a matching mode, the adjustment is convenient and fast, the two conveying rails do not need to be adjusted one by one, and the convenience and the rapidness are realized; two guide ways on the cooperation deflector roll, can adjust the width of two guide ways through rotating second sleeve and third sleeve for the guide way cooperates with two delivery track respectively, further guarantees the stable transport of zip fastener.

2. By arranging the jacking unit, the zipper is jacked from the upper end through the pressing barrel before cutting, so that the zipper is prevented from moving when being cut, high-temperature gas is input to spray to a position to be cut when the zipper is jacked, the position to be cut is softened by high-temperature spraying, the position to be cut of the zipper is softened, the subsequent cutting work is facilitated, the force applied when the cutter is cut can be reduced, the service life of the cutter is ensured, the softened zipper is not easy to generate noise when being cut, meanwhile, the phenomena of fluffing and edge scattering at the cut position cannot occur, the cutting effect is improved, the preheated gas is directly blown to the zipper for softening, the cutter is only required to be in contact with the zipper when being cut, the cutter is not directly blown by the gas, the heating of the cutter is reduced, and the service life of the cutter is prolonged;

meanwhile, a driving mechanism is arranged during cutting, when the zipper is cut off, the zipper can be cut off by inputting gas into the two telescopic air bags, and the zipper is combined with a preheating and softening gas supply mechanism, so that the zipper is convenient to cut off, the zipper is not required to be additionally driven by machinery, the zipper is convenient to control, and the cost is saved; the opening and closing of the two air inlet valves and the two exhaust valves are controlled to control the operation of the cutter, the control is convenient and fast, the secondary cutting operation can be conveniently and stably controlled, the purpose of secondary cutting is achieved, the phenomenon of adhesion of the cut and softened zipper is avoided, and the completeness of cutting is guaranteed; and when the cutting-off operation is controlled, the gas in the telescopic air bag can be discharged and sprayed to the cutter, adsorbed chips on the cutter are cleaned, the service life of the cutter is prolonged, and the cutting-off stability of the zipper is ensured.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic top view of an embodiment of the present invention;

FIG. 3 is a schematic top view of a severing device according to an embodiment of the present invention;

FIG. 4 is a schematic top view of a table according to an embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of a delivery table in an embodiment of the invention;

FIG. 6 is a schematic cross-sectional view of an adjustment rod in accordance with an embodiment of the present invention;

FIG. 7 is a schematic view of a cutting apparatus according to an embodiment of the present invention;

FIG. 8 is a schematic structural view of a middle pressure barrel according to an embodiment of the present invention;

FIG. 9 is a schematic view of a feeding device according to an embodiment of the present invention;

FIG. 10 is a schematic view of the structure of a guide roller according to an embodiment of the present invention;

labeled as:

100. a zipper;

1. a work table;

2. a feeding device; 21. a guide roller; 211. a first guide groove; 212. a second guide groove; 213. a roller body; 214. a first sleeve; 215. a second sleeve; 216. a third sleeve; 22. a roller frame; 23. a rotating shaft;

3. a cutting device; 31. a conveying table; 311. a first conveying rail; 312. a second conveying track; 313. a carriage; 314. a first regulating block; 315. a second regulating block; 316. a third regulating block; 317. an adjustment unit; 3171. adjusting a rod; 3172. a knob; 3173. a first screw rod sleeve; 3174. a second screw rod sleeve; 3175. a sliding bearing; 3176. a limiting key; 3177. a key slot; 318. a slider; 32. a cutting mechanism; 321. a mounting frame; 322. a jacking unit; 3221. a lifting plate; 3222. pressing the cylinder; 3223. a first electromagnet; 3224. a second electromagnet; 3225. a first spring; 323. a cutting unit; 3231. an air flow channel; 3232. an air supply mechanism; 3233. a gas supply pipe; 3234. a heater; 3235. a movable plate; 3236. a cutter; 3237. a second spring; 324. a drive mechanism; 3241. moving the plate; 3242. mounting a round head butting block; 3243. a lower round head abutting block; 3244. a first telescopic air bag; 3245. a second telescopic air bag; 3246. an intake valve; 3247. an exhaust valve;

4. a discharging device;

Detailed Description

The technical solutions in the embodiments of the present application will be described below clearly with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present disclosure.

In the description of the present application, it is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. For convenience of description, the dimensions of the various features shown in the drawings are not necessarily drawn to scale. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

It should be noted that the terms "first," "second," and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

It should be noted that in the description of the present application, the orientation or positional relationship indicated by the terms such as "front, back, up, down, left, right", "lateral, vertical, horizontal" and "top, bottom" and the like are generally based on the orientation or positional relationship shown in the drawings for convenience of description and simplicity of description only, and in the case of not making a reverse description, these orientation terms do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

It should be noted that, in the present application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a component of' 8230; \8230;" does not exclude the presence of another like element in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

Example 1

As shown in fig. 1 and 2, the present embodiment discloses a zipper cutting machine, which, in a specific embodiment of the present invention, comprises a feeding device 2 and a cutting device 3 mounted on a workbench 1, wherein the feeding device 2 and the cutting device 3 are both arranged on the workbench 1 as two devices for double-station work, and each feeding device 2 and cutting device 3 can simultaneously feed and cut two zippers 100; in addition, a discharging device 4 for conveying the discharged materials of the cut zippers 100 is also arranged on the workbench 1;

the cutting device 3 comprises a conveying table 31 which is arranged on the workbench 1 and is provided with a first conveying track 311 and a second conveying track 312 for placing and conveying the zipper 100; a cutting mechanism 32 mounted on the conveying table 31 for cutting the chains in the first conveying rail 311 and the second conveying rail 312;

as shown in fig. 4 and 5, the conveying table 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, wherein the first adjusting block 314 and the second adjusting block 315 are disposed at intervals to form a first conveying track 311, and the second adjusting block 315 and the third adjusting block 316 are disposed at intervals to form a second conveying track 312; the conveying table 31 is further provided with 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, wherein the adjusting unit 317 is used for controlling the movement of the second adjusting block 315 and the third adjusting block 316, and the width of the first conveying track 311 and the width of the second conveying track 312 can be ensured to be the same when the movement is controlled.

As shown in fig. 5 and 6, the adjusting unit 317 includes an adjusting lever 3171, the adjusting lever 3171 is horizontally disposed and sequentially passes through the first adjusting block 314, the second adjusting block 315, and the third adjusting block 316, and one end thereof is provided with a knob 3172; the first screw rod sleeve 3173 is fixedly sleeved on the adjusting rod 3171, the second adjusting block 315 is sleeved outside the first screw rod sleeve 3173 in a threaded manner, and part of the second adjusting block 315 is abutted against the first screw rod sleeve 3173; the second screw rod sleeve 3174 is sleeved on the adjusting rod 3171 in a sliding manner, the third adjusting block 316 is sleeved outside the second screw rod sleeve 3174 in a threaded manner, and the third adjusting block 316 is partially abutted against the second screw rod sleeve 3174; a sliding bearing 3175, which is sleeved on the adjusting rod 3171 in a sliding manner, is positioned between the first screw rod sleeve 3173 and the second screw rod sleeve 3174, and two ends of the sliding bearing 3175 are respectively abutted against the second screw rod sleeve 3174 and the second adjusting block 315;

the first adjusting block 314 is fixed on the conveying table 31, a limit key 3176 is arranged outside the adjusting rod 3171 along the length direction of the adjusting rod, and a key groove 3177 for the limit key 3176 to insert and for the limit key 3176 to slide in is arranged on the inner side of the second screw rod sleeve 3174; the limit key 3176 is matched with the key groove 3177, so that the second screw rod sleeve 3174 can be driven by the adjusting rod 3171 to rotate, and the sliding between the second screw rod sleeve 3174 and the adjusting rod 3171 can be guaranteed.

The slide blocks 318 used for bearing the zippers and allowing the zippers to slide on the slide blocks are arranged on the side portions of the first adjusting block 314, the second adjusting block 315 and the third adjusting block 316 at intervals, the zippers are supported through the slide blocks, in other embodiments, in order to ensure that the middle of the bottom of each zipper has enough support, the slide blocks are replaced by slide grooves and slide plates which are respectively arranged on the adjusting blocks on two sides, and the slide plate on the adjusting block on one side is inserted into the slide groove of the adjusting block on the other side, so that the zippers can be stably supported.

As shown in fig. 9 and 10, the feeding device 2 includes two guide rollers 21, which are arranged up and down, each guide roller 21 is provided with two guide grooves arranged annularly, and the zipper is located between the two guide rollers 21 and embedded in the guide grooves; the roller frame 22 is arranged on the workbench 1, and the guide roller 21 is rotatably arranged on the roller frame 22 through a rotating shaft 23;

in the embodiment, the zipper is fed by adopting the belt conveying mechanism, and the two guide rollers 21 play a role in limiting and guiding; in other embodiments, a motor can be installed on the roller frame 22 to drive the guide roller 21 to rotate as the power for conveying the zipper.

The guide roller 21 comprises a roller body 213, and a first sleeve 214, a second sleeve 215 and a third sleeve 216 which are sleeved on the roller body 213; the guide grooves comprise 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 arranged at intervals, the first guide groove 211 is formed by arranging the first sleeve 214 and the second sleeve 215 at intervals, and the second guide groove 212 is formed by arranging the second sleeve 215 and the third sleeve 216 at intervals; the first sleeve 214 is fixed at one end of the roller body 213, and the second sleeve 215 and the third sleeve 216 are both threaded on the outside of the roller body 213 and can rotate on the roller body 213.

When the device normally works, the two guide rollers 21 are used for limiting and guiding the zippers, the two zippers are respectively arranged in the first conveying track 311 and the second conveying track 312, then the cutting mechanism 32 on the conveying table 31 is used for cutting the zippers in the two conveying tracks, and the cut zippers are discharged through the discharging device 4;

when a wider zipper needs to be cut, firstly, the width of the two conveying tracks is adjusted, the rotating knob 3172 drives the adjusting rod 3171 to rotate, the first screw rod sleeve 3173 and the second screw rod sleeve 3174 rotate along with the rotating knob 3172, so that the second adjusting block 315 and the third adjusting block 316 move in the same direction, and because the first screw rod sleeve 3173 and the second screw rod sleeve 3174 rotate synchronously, the moving distances of the second adjusting block 315 and the third adjusting block 316 relative to the first screw rod sleeve 3173 and the second screw rod sleeve 3174 are consistent, at the moment, the second adjusting block 315 is far away from the first adjusting block 314, and the width of the first conveying track 311 and the width of the second conveying track 312 are increased; meanwhile, due to the arrangement of the sliding bearing 3175, when the second adjusting block 315 moves, the sliding bearing 3175 and the second screw rod sleeve 3174 are pushed, so that the second screw rod sleeve 3174 and the third adjusting block 316 move in the direction away from the first screw rod sleeve 3173, that is, the second adjusting block 315 can simultaneously push the third adjusting block 316 to move in the direction away from the first adjusting block 314 for the same distance, so that the width increment of the first conveying track 311 and the second conveying track 312 is the same, the width of the two conveying tracks is increased at the same part, and the increment is the same, so that the two conveying tracks are adapted to the wider zipper for cutting.

The two guide grooves on the guide roller 21 are adjusted in width by only rotating the second sleeve 215 and the third sleeve 216 to control the widths thereof, and in other embodiments, in order to adjust the positions of the two guide grooves on the roller body 213, the first sleeve 214 and the roller body 213 are also connected by threads, so that the three sleeves can move, and the positions of the two guide grooves can be adjusted.

Through the technical scheme, the plurality of conveying tracks are arranged, so that a plurality of zippers can be cut off at the same time, the working efficiency is improved, the adjustable conveying table is adopted, when zippers with different widths are cut off, the knob is rotated, the second adjusting block and the third adjusting block are driven to move through the transmission of the adjusting rod, the first screw rod sleeve and the second screw rod sleeve, the widths of the two conveying tracks can be adjusted to be matched with the widths of the zippers to be cut off, the stability of conveying the zippers in the conveying tracks is improved, the zippers are prevented from being separated from the tracks during conveying, the phenomenon that the cut surfaces of the zippers are inclined due to bending in the conveying tracks is avoided, and the cutting effect is improved;

meanwhile, the two conveying rails can be directly adjusted to be the same width when the width of the conveying rails is adjusted in a matching mode, the adjustment is convenient and fast, the two conveying rails do not need to be adjusted one by one, and the convenience and the rapidness are realized; the width of two guide ways can be adjusted through rotating second sleeve and third sleeve to two guide ways on the cooperation deflector roll for the guide way cooperates with two delivery track respectively, further guarantees the stable transport of zip fastener.

Example 2

The embodiment provides a zipper cutting machine, which comprises the technical scheme of the embodiment and also has the following technical characteristics.

As shown in fig. 3 and 7, the cutting mechanism 32 includes a mounting frame 321 mounted on the conveying table 31; a tightening unit 322 and a cutting unit 323, wherein the tightening unit 322 is mounted on the mounting frame 321, the tightening unit 322 can be inserted into the first conveying track 311 and the second conveying track 312 from the top to press the zipper, and the cutting unit 323 can cut the zipper after the tightening unit 322 tightens the zipper;

two ends of the mounting frame 321 are mounted on the first adjusting block 314 and the third adjusting block 316 through bolts, when the width of the conveying track is adjusted, the mounting frame 321 is detached for adjustment, and after adjustment, one end of the mounting frame 321 is connected with the third adjusting block 316 by rotating to a proper position;

the tightening unit 322 includes a lifting plate 3221, and is slidably disposed on the mounting frame 321 through a sliding rail; the pressing cylinders 3222 are detachably mounted at the bottom of the lifting plate 3221, the pressing cylinders 3222 are provided in two, the bottom ends of the pressing cylinders 3222 are respectively inserted into the first conveying track 311 and the second conveying track 312, the pressing cylinders 3222 are connected with the lifting plate 3221 through bolts, so that the dismounting is convenient, and the positions of the pressing cylinders 3222 can be adjusted according to the positions of the conveying tracks so as to align the pressing cylinders 3222; a first electromagnet 3223 mounted on the mounting frame 321; the second electromagnet 3224 is installed on the lifting plate 3221 and located at the bottom of the first electromagnet 3223, and the first electromagnet 3223 and the second electromagnet 3224 repel each other when being energized; the first spring 3225 is disposed at the bottom of the lifting plate 3221, and provides a force to the lifting plate 3221 to move upward, in order to ensure the stability of the reset of the first spring 3225, a telescopic rod is disposed, and the first spring 3225 is sleeved on the telescopic rod.

As shown in fig. 8, the cutting unit 323 includes an air flow path 3231 opened in the pressure cylinder 3222 with an output end thereof facing the zipper; a gas supply mechanism 3232 mounted on the conveying table 31 and communicating with the gas flow passage 3231 through a gas supply pipe 3233; a heater 3234 installed on the gas supply pipe 3233, for heating gas inside the gas supply pipe 3233; a movable plate 3235 slidably disposed inside the pressing cylinder 3222, and a cutter 3236 detachably mounted at the bottom thereof; a second spring 3237 provided at the bottom of the movable plate 3235 and applying an upward force to the movable plate 3235; and a driving mechanism 324 for controlling the movable plate 3235 and the cutter 3236 to descend for cutting.

The driving mechanism 324 includes a moving plate 3241, which is installed in the pressure cylinder 3222 through a slide rail and can move left and right in the pressure cylinder 3222; an upper round head abutting block 3242 fixed at the lower end of the movable plate 3241; the lower round-head abutting block 3243 is fixed at the upper end of the movable plate 3235 and can be matched with the upper round-head abutting block 3242 to prop the movable plate 3235 downwards; a first telescopic air bag 3244 and a second telescopic air bag 3245 respectively provided at both sides of the moving plate 3241 and communicating with the air flow passage 3231; an intake valve 3246 mounted on gas input ends of the first and second bellows 3244, 3245; and the exhaust valve 3247 is installed at the bottom of the first telescopic air bag 3244 and the second telescopic air bag 3245, and the output end of the exhaust valve is arranged towards the cutter 3236.

The intake valve 3246 and the exhaust valve 3247 are both provided as one-way valves;

in addition, in order to perform cutting operation in time and improve the working efficiency, a first contact is arranged at the bottom of the lifting plate 3221, a second contact is arranged on the conveying table 31, when the zipper is pressed by the pressing cylinder 3222 which is lowered by the lifting plate 3221, the first contact is connected with the second contact, and the air supply mechanism 3232 starts to work to convey hot air to the position to be cut of the zipper.

When cutting is performed, firstly, the first electromagnet 3223 and the second electromagnet 3224 are electrified, the first electromagnet 3223 and the second electromagnet 3224 generate repulsive force to drive the lifting plate 3221 to move downwards, the bottom end of the pressing cylinder 3222 below the lifting plate 3221 is inserted into the conveying track and tightly pushes against the zipper in the conveying track, the zipper in the conveying track is fixed, then, the air supply mechanism 3232 is started, the air is heated by the heater 3234 to form high-temperature air, the high-temperature air enters the air flow channel 3231 of the pressing cylinder 3222 through the air supply pipe 3233, and the high-temperature air is discharged to a to-be-cut part of the zipper to soften the tape cut part of the zipper;

then, an air inlet valve 3246 of the first telescopic air bag 3244 and an air outlet valve 3247 of the second telescopic air bag 3245 are opened, the first telescopic air bag 3244 is pushed to expand and extend along with the air entering the first telescopic air bag 3244, the moving plate 3241 is driven to move rightwards, the upper round head abutting block 3242 pushes the lower round head abutting block along with the rightward movement when moving rightwards, the movable plate 3235 and a cutter 3236 on the movable plate 3235 are driven to move downwards to cut off the softened zipper, and after the upper round head abutting block 3242 is separated from the contact of the lower round head abutting block 3243, the movable plate 3235 drives the cutter 3236 to ascend again and contract into the pressing cylinder 3222 under the action of a second spring 3237; then an air inlet valve 3246 of a first telescopic air bag 3244 and an exhaust valve 3247 of a second telescopic air bag 3245 are closed, an air inlet valve 3246 of the second telescopic air bag 3245 and an exhaust valve 3247 of the first telescopic air bag 3244 are opened, the second telescopic air bag 3245 is pushed to expand and extend, a moving plate 3241 is driven to move leftwards, an upper round head abutting block 3242 abuts against a lower round head abutting block along with the left-right movement, and a cutter 3236 moves downwards again to perform secondary cutting;

the moving plate 3241 is controlled to move and cut, the moving plate 3241 presses the second telescopic air bag 3245, gas in the second telescopic air bag 3245 is sprayed out from an exhaust valve 3247 and sprayed onto a cutter 3236, and scraps on the cutter 3236 are cleaned; similarly, during the secondary cutting, the gas in the first telescopic air bag 3244 is sprayed out from the exhaust valve 3247 and sprayed onto the cutter 3236, so as to clean the debris on the cutter 3236;

after the zipper is cut, the air supply is stopped, the first electromagnet 3223 and the second electromagnet 3224 are powered off, the lifting plate 3221 and the pressing cylinder 3222 are driven to move upwards under the action of the first spring 3225, the clamping on the zipper is loosened, the cut zipper is taken out, the zipper is input again, and the operation is repeated to cut the zipper repeatedly.

In addition, in order to ensure that the movable plate 3241 can be pushed by sufficient air pressure, an air valve is provided at the output end of the air flow channel 3231, and when the control cutter 3236 moves, the air valve is closed to stop the discharge of hot air, so that sufficient air pressure in the telescopic air bag can push the movable plate 3241 to move.

In other embodiments, in order to ensure the injection of the gas, a gas nozzle can be installed at the output end of the gas flow channel, and the gas is injected to the zipper in a high-pressure injection mode; the heater can also be arranged in the airflow channel, so that the condition that the gas in the input value telescopic air bag is high-temperature gas is avoided; in addition, a cooling mechanism can be arranged at the tail end of the discharging device or the tail end of the conveying track to cool the cut zipper, so that the situation that the cut part of the zipper is still in a softening state to influence subsequent conveying is avoided.

According to the technical scheme, the puller unit is arranged, the zipper is pulled tightly from the upper end through the pressing barrel before cutting, the zipper is prevented from moving when being cut, high-temperature gas is input to spray to the position to be cut when the puller unit is pulled tightly, the position to be cut is sprayed and softened at high temperature, the position to be cut of the zipper is softened to facilitate subsequent cutting work, the force applied when the cutter cuts can be reduced, the service life of the cutter is ensured, noise is not easy to generate when the softened zipper is cut, meanwhile, the phenomena of fluffing and edge scattering at the cutting position cannot occur, the cutting effect is improved, the preheated gas is directly blown to the zipper for softening, the cutter only needs to be in contact with the zipper when being cut, the cutter is not directly blown by the gas, the heating of the cutter is reduced, and the service life of the cutter is prolonged;

meanwhile, a driving mechanism is arranged during cutting, when the zipper is cut off, the zipper can be cut off by inputting gas into the two telescopic air bags, and the zipper is combined with a preheating and softening gas supply mechanism, so that the zipper is convenient to cut off, the zipper is not required to be additionally driven by machinery, the zipper is convenient to control, and the cost is saved; the opening and closing of the two air inlet valves and the two air outlet valves are controlled to control the operation of the cutter, the control is convenient and fast, the secondary cutting operation and the secondary cutting operation can be conveniently and stably controlled, the adhesion phenomenon of the cut and softened zipper is avoided, and the cutting completeness is ensured; and when the cutting-off operation is controlled, the gas in the telescopic air bag can be discharged and sprayed to the cutter, adsorbed chips on the cutter are cleaned, the service life of the cutter is prolonged, and the cutting-off stability of the zipper is ensured.

Example 3

The invention also discloses a method for cutting the zipper, which is suitable for the zipper cutting machine in the embodiment 2, and the specific implementation mode of the invention comprises the following steps:

s1, feeding: arranging the zippers to be cut off in the two conveying tracks and the two guide grooves on the guide roller, and then continuously conveying the zippers through the belt conveying mechanism;

s2, tightly pushing: the first electromagnet and the second electromagnet are electrified, the first electromagnet and the second electromagnet generate repulsive force to drive the lifting plate to move downwards, the bottom end of the pressing cylinder below the lifting plate is inserted into the conveying track and tightly pushes the zipper in the conveying track, the zipper in the conveying track is locked and fixed, and the belt feeding mechanism stops conveying the zipper;

s3, softening: starting the gas supply mechanism, wherein high-temperature gas formed after the gas is heated by the heater is sprayed to the position to be cut of the zipper from the gas flow channel of the pressing cylinder, so that the position to be cut of the zipper is heated and softened;

s4, cutting: the air in the air flow channel enters the first telescopic air bag to push the first telescopic air bag to expand and extend, the moving plate is driven to move rightwards to extrude the second telescopic air bag, the air in the second telescopic air bag is sprayed out of the air outlet valve and is sprayed onto the cutter to clean scraps on the cutter, meanwhile, the upper round head abutting block abuts against the lower round head abutting block along with the rightward movement, the moving plate and the cutter on the moving plate are driven to move downwards to cut off the softened zipper, the upper round head abutting block is separated from the contact of the lower round head abutting block after the moving plate continues to move rightwards, and the moving plate drives the cutter to ascend and contract into the pressing cylinder again under the action of the second spring;

s5, recut: after the primary cutting-off action is completed, an air inlet valve of the first telescopic air bag and an air outlet valve of the second telescopic air bag are closed, an air inlet valve of the second telescopic air bag and an air outlet valve of the first telescopic air bag are opened, the second telescopic air bag is pushed to expand and extend to drive the moving plate to move leftwards to extrude the first telescopic air bag, air in the first telescopic air bag is sprayed out from the air outlet valve to be sprayed onto the cutter, scraps on the cutter are cleaned, the upper round head abutting block moves leftwards to abut against the lower round head abutting block again, and the cutter moves downwards again to perform secondary cutting-off action;

s6, resetting: after the repeated cutting is finished, the gas supply mechanism stops supplying gas, the first electromagnet and the second electromagnet are powered off, the lifting plate and the pressing cylinder are driven to move upwards under the action of the first spring, the zipper is clamped, the cut zipper is taken out, the material is discharged through the cutting device, and the belt conveying mechanism is opened again to convey the zipper;

and S7, circulation: and (5) circularly repeating the step (S1) to the step (S7) to finish the continuous cutting work of the zipper.

In addition, a width adjusting step is also included before the step S1, the width of the two guide grooves and the width of the two conveying tracks are adjusted to be matched with the width of the zipper, and the width adjusting step comprises

D1, width adjustment of a guide groove: rotating the second sleeve and the third sleeve on the roller body, and adjusting the distance among the first sleeve, the second sleeve and the third sleeve to enable the width of the two guide grooves to be matched with the width of the zipper;

d2, width adjustment of a conveying track: the rotary knob drives the adjusting rod to rotate, the first screw rod sleeve and the second screw rod sleeve rotate along with the first screw rod sleeve, 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 rod sleeve and the second screw rod sleeve is consistent, the second adjusting block pushes the sliding bearing and the second screw rod sleeve during moving, the second screw rod sleeve and the third adjusting block move in the direction away from the first screw rod sleeve, the width of the two conveying tracks is synchronously increased and adjusted, the width increasing amount of the first conveying track and the width increasing amount of the second conveying track are the same, and the width of the two conveying tracks is changed to enable the width of the two conveying tracks to be matched with the width of the zipper.

D3 alignment: and reinstalling the mounting frame and the pressing barrels so that the positions of the two pressing barrels are respectively aligned with the two conveying rails.

While the embodiments of the present application have been described in connection with the drawings, the embodiments and features of the embodiments of the present application can be combined with each other without conflict and the present application is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and many modifications may be made by one skilled in the art without departing from the spirit and scope of the present application as claimed.

Claims (10)

1. The utility model provides a zipper cutting machine, is including installing material feeding unit and the cutting device on the workstation, its characterized in that:

the feeding devices and the cutting devices are arranged on the workbench to work at two double stations, and each feeding device and each cutting device can feed and cut two zippers at the same time;

the cutting device comprises

The conveying table is arranged on the workbench, and a first conveying track and a second conveying track for placing and conveying the zippers are arranged on the conveying table;

the cutting mechanism is arranged on the conveying platform and is used for cutting off the chains in the first conveying track and the second conveying track;

the conveying table comprises a conveying frame, a first adjusting block, a second adjusting block and a third adjusting block, wherein the first adjusting block, the second adjusting block and the third adjusting block are arranged on the conveying frame in a sliding mode;

the conveying table is also provided with 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 for controlling the movement of the second adjusting block and the third adjusting block, and

the width of the first conveying track and the width of the second conveying track can be ensured to be the same when the movement is controlled.

2. A zipper cutting machine according to claim 1, characterized in that: the adjusting unit comprises

The adjusting rod sequentially passes through the first adjusting block, the second adjusting block and the third adjusting block, and one end of the adjusting rod is provided with a knob;

the first screw rod sleeve is fixedly sleeved on the adjusting rod, the second adjusting block is sleeved outside the first screw rod sleeve in a threaded manner, and the second adjusting block is partially abutted to the first screw rod sleeve;

the second screw rod sleeve is sleeved on the adjusting rod in a sliding manner, the third adjusting block is sleeved outside the second screw rod sleeve in a threaded manner, and the third adjusting block is partially abutted against the second screw rod sleeve;

the sliding bearing is sleeved on the adjusting rod in a sliding mode, is positioned between the first screw rod sleeve and the second screw rod sleeve, and two ends of the sliding bearing are respectively abutted against the second screw rod sleeve and the second adjusting block;

the first adjusting block is fixed on the conveying table, a limiting key is arranged outside the adjusting rod along the length direction of the adjusting rod, and a key groove for the limiting key to be inserted into and for the limiting key to slide in is formed in the inner side of the second screw rod sleeve.

3. A zipper cutting machine according to claim 1, characterized in that: the lateral parts of the first adjusting block, the second adjusting block and the third adjusting block are provided with sliders for bearing the zipper and allowing the zipper to slide on the sliders, and the adjacent sliders are arranged at intervals.

4. A zipper cutting machine according to any one of claims 1 to 3, characterized in that: the feeding device comprises

The zipper is positioned between the two guide rollers and embedded into the guide grooves;

the roller frame is installed on the workbench, and the guide roller is installed on the roller frame through the rotation of the rotating shaft.

5. A zipper cutting machine according to claim 4, characterized in that: the guide roller comprises

The roller body is sleeved with a first sleeve, a second sleeve and a third sleeve;

the guide grooves comprise a first guide groove and a second guide groove, 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 at intervals, and the second guide groove is formed between the second sleeve and the third sleeve at intervals;

the first sleeve is fixed at one end of the roller body, and the second sleeve and the third sleeve are sleeved outside the roller body in a threaded manner and can rotate on the roller body.

6. A zipper cutting machine according to any one of claims 1 to 3, characterized in that: the cutting mechanism comprises

The mounting frame is arranged on the conveying platform;

the pushing unit is arranged on the mounting frame and can be inserted into the first conveying track and the second conveying track from the top to press the zipper tightly, and the cutting unit can cut the zipper after the pushing unit pushes the zipper tightly;

wherein the tightening unit comprises

The lifting plate is arranged on the mounting frame in a sliding manner through a sliding rail;

the two pressing cylinders are detachably mounted at the bottom of the lifting plate, and the bottom ends of the two pressing cylinders are respectively inserted into the first conveying rail and the second conveying rail;

the first electromagnet is arranged on the mounting frame;

the second electromagnet is arranged on the lifting plate and positioned at the bottom of the first electromagnet, and the first electromagnet and the second electromagnet repel each other when being electrified;

the first spring is arranged at the bottom of the lifting plate and provides upward movement force for the lifting plate.

7. A zipper cutting machine according to claim 6, characterized in that: the cutting unit comprises

The airflow channel is arranged in the pressing cylinder, and the output end of the airflow channel faces the zipper;

the air supply mechanism is arranged on the conveying table and is communicated with the air flow channel through an air supply pipe;

the heater is arranged on the gas supply pipe and used for heating gas inside the gas supply pipe;

the movable plate is arranged in the pressing cylinder in a sliding mode, and the bottom of the movable plate is detachably provided with a cutter;

the second spring is arranged at the bottom of the movable plate and provides upward movement force for the movable plate;

and the driving mechanism is used for controlling the movable plate and the cutter to descend for cutting-off work.

8. A zipper cutting machine according to claim 7, characterized in that: the driving mechanism comprises

The moving plate is arranged in the pressing cylinder through a slide rail and can move left and right in the pressing cylinder;

the upper round head abutting block is fixed at the lower end of the moving plate;

the lower round-head abutting block is fixed at the upper end of the movable plate and can be matched with the upper round-head abutting block to push the movable plate downwards;

the first telescopic air bag and the second telescopic air bag are respectively arranged on two sides of the moving plate and are communicated with the air flow channel;

the air inlet valve is arranged on the gas input ends of the first telescopic air bag and the second telescopic air bag;

and the exhaust valve is arranged at the bottoms of the first telescopic air bag and the second telescopic air bag, and the output end of the exhaust valve faces the cutter.

9. A method for cutting a slide fastener, which is applied to the slide fastener cutting machine according to any one of claims 1 to 8, comprising the steps of:

s1, feeding: arranging the zippers to be cut in the two guide grooves on the two conveying tracks and the guide roller, and then continuously conveying the zippers through the belt conveying mechanism;

s2, jacking: the first electromagnet and the second electromagnet are electrified, the first electromagnet and the second electromagnet generate repulsive force to drive the lifting plate to move downwards, the bottom end of the pressing cylinder below the lifting plate is inserted into the conveying track and tightly pushes the zipper in the conveying track, the zipper in the conveying track is locked and fixed, and the belt feeding mechanism stops conveying the zipper;

s3, softening: starting the gas supply mechanism, wherein high-temperature gas formed after the gas is heated by the heater is sprayed to the position to be cut of the zipper from the gas flow channel of the pressing cylinder, so that the position to be cut of the zipper is heated and softened;

s4, cutting: the air in the air flow channel enters the first telescopic air bag to push the first telescopic air bag to expand and extend, the moving plate is driven to move rightwards to extrude the second telescopic air bag, the air in the second telescopic air bag is sprayed out of the air outlet valve and is sprayed onto the cutter to clean scraps on the cutter, meanwhile, the upper round head abutting block abuts against the lower round head abutting block along with the rightward movement, the moving plate and the cutter on the moving plate are driven to move downwards to cut off the softened zipper, the upper round head abutting block is separated from the contact of the lower round head abutting block after the moving plate continues to move rightwards, and the moving plate drives the cutter to ascend and contract into the pressing cylinder again under the action of the second spring;

s5, recut: after the primary cutting-off action is completed, an air inlet valve of the first telescopic air bag and an air outlet valve of the second telescopic air bag are closed, an air inlet valve of the second telescopic air bag and an air outlet valve of the first telescopic air bag are opened, the second telescopic air bag is pushed to expand and extend to drive the moving plate to move leftwards to extrude the first telescopic air bag, air in the first telescopic air bag is sprayed out from the air outlet valve to be sprayed onto the cutter, scraps on the cutter are cleaned, the upper round head abutting block moves leftwards to abut against the lower round head abutting block again, and the cutter moves downwards again to perform secondary cutting-off action;

s6, resetting: after the repeated cutting is finished, stopping supplying air by the air supply mechanism, powering off the first electromagnet and the second electromagnet, driving the lifting plate and the pressing cylinder to move upwards under the action of the first spring, loosening the clamping of the zipper, taking out the cut zipper, discharging through the cutting device, and reopening the belt conveying mechanism to convey the zipper;

and S7, circulation: and step S1 to step S7 are repeated circularly to finish continuous cutting work of the zipper.

10. A method of cutting a slide fastener according to claim 9, wherein: before the step S1, a width adjusting step is also included, and the width adjusting step comprises

D1, width adjustment of a guide groove: rotating the second sleeve and the third sleeve on the roller body, and adjusting the distance among the first sleeve, the second sleeve and the third sleeve to enable the width of the two guide grooves to be matched with the width of the zipper;

d2, width adjustment of a conveying track: the rotary knob drives the adjusting rod to rotate, the first screw rod sleeve and the second screw rod sleeve rotate along with the first screw rod sleeve, 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 rod sleeve and the second screw rod sleeve is consistent, the second adjusting block pushes the sliding bearing and the second screw rod sleeve during moving, the second screw rod sleeve and the third adjusting block move in the direction away from the first screw rod sleeve, the width of the two conveying tracks is synchronously increased and adjusted, the width increasing amount of the first conveying track and the width increasing amount of the second conveying track are the same, and the width of the two conveying tracks is changed to enable the width of the two conveying tracks to be matched with the width of the zipper.

D3 alignment: the mounting frame and the pressing drums are remounted so that the positions of the two pressing drums are respectively aligned with the two conveying rails.

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