A wide continuous punching equipment

Abstract

The present invention discloses a wide-width continuous punching device, comprising a product winding and step-difference section assembly, a product half-cutting section assembly, a product full-cutting section assembly, and a product automatic unwinding section assembly connected in sequence from left to right; the product winding and step-difference section assembly comprises a winding frame, a winding bracket is provided on the winding frame, a winding air shaft is provided at the front position of the winding bracket, a stepping motor is provided on the winding bracket, and the driving shaft of the stepping motor is connected to the end of the winding air shaft; a plurality of parallel traction air shafts are provided at the front position of the winding bracket, and the traction air shafts are connected to the winding air shafts. The present invention facilitates the cutting process of the film passing through the cutting chamber and greatly improves the cutting process of the film.

Description

Technical Field

[0001] The invention relates to a punching device, in particular to a wide-width continuous punching device. Background Art

[0002] A punching machine is a mechanical device that, after the raw material is mounted, is driven by a power mechanism and the punching die is applied to the material to create a hole. Punching machines can perform sheet processing, stamping, molding, embossing, and other operations that force metal into the die. Due to their widespread use, although all manufacturers produce punching machines, their products have different focuses. The working principle of a punching machine is that after the raw material is mounted on a work platform, the punching die is driven by a power mechanism and applied to the material to create a hole. A pneumatic punching machine, also known as a pneumatic punch or plastic bag punch, is a pneumatic punching die used in conjunction with a bag-making machine. The pneumatic die is activated by a signal transmitted from the bag-making machine's computer to a solenoid valve. Its structure is similar to that of a cold punch die and is primarily used for punching holes in plastic bags and paper products. The die base of the pneumatic punching machine is made of precision cast alloy material, the punching power adopts high-precision cylinder, and the punch adopts imported mold steel structure to meet the needs of stamping. It has beautiful appearance, high operation frequency, strong wear resistance, long service life, and the highest frequency can reach 320 times. Existing punching machines are not convenient for punching and cutting films. Summary of the Invention

[0003] The present invention mainly solves the technical problems existing in the prior art, thereby providing a wide-width continuous punching device that is convenient for cutting a film passing through a cutting chamber, and greatly improves the cutting process of the film.

[0004] The above technical problems of the present invention are mainly solved by the following technical solutions:

[0005] A wide-width continuous punching device, comprising a product winding and step-difference part assembly, a product half-cutting part assembly, a product full-cutting part assembly and a product automatic winding-out part assembly connected in sequence from left to right; the product winding and step-difference part assembly comprises a winding frame, a winding bracket is provided on the winding frame, a winding air shaft is provided at the front position of the winding bracket, a stepping motor is provided on the winding bracket, and the driving shaft of the stepping motor is connected to the end of the winding air shaft; a plurality of traction air shafts arranged in parallel are provided at the front position of the winding bracket, and the traction air shaft is connected to the winding air shaft; the product half-cutting part assembly comprises a base and a top seat, guide shafts are provided between the four corners of the base and the top seat, a plurality of first linear sliders are provided at the bottom of the base, the first linear sliders are mounted on the first linear slide rail, a plurality of first cutting cylinders are provided on the top seat, a cutting piston rod is provided at the lower part of each first cutting cylinder, and a cutting piston rod is provided at the lower end of the cutting piston rod Lifting seat, a lock seat is provided between the lower end of the cutting piston rod and the cutting lifting seat; both ends of the cutting lifting seat are sleeved on the outer circumference of the guide shaft, and a bearing sleeve is provided between the cutting lifting seat and the guide shaft. A cutting table is provided on the base, and a cutting knife is provided at the bottom of the cutting lifting seat, and the cutting knife is installed above the cutting table; the full-product cutting unit assembly includes a cutting frame, and the bottom of both ends of the cutting frame are provided with sliding support feet, the sliding support feet are installed on the second linear slider, and the second linear slider is installed on the second linear guide rail. A second cutting hydraulic cylinder is provided on the top of the cutting frame, and a lifting knife frame is provided at the lower part of the second cutting hydraulic cylinder. An upper cutting knife is provided at the bottom of the lifting knife frame, and a lower cutting knife is provided between the tops of the sliding support feet, and a cutting cavity is provided between the upper cutting knife and the lower cutting knife; the automatic product unwinding unit assembly includes a unwinding frame, and a unwinding platform and an unwinding roller are provided on the front of the unwinding frame, and the unwinding roller is installed above the unwinding platform.

[0006] Furthermore, an automatic product cleaning section assembly is provided between the product winding and step difference section assembly and the product half-cutting section assembly, and the automatic product cleaning section assembly includes a cleaning frame, and a transmission roller and a sticky roller are provided on the cleaning frame, and the transmission roller and the sticky roller are arranged in parallel; a product pulling section assembly is provided between the product winding and step difference section assembly and the product automatic cleaning section assembly, and the product pulling section assembly includes a pulling frame, a servo motor is provided on the top of the pulling frame, a screw rod is provided at the bottom of the servo motor, and a lifting plate is provided at the lower end of the screw rod, and the pulling frame is provided with four vertically arranged guide shafts, and the four corners of the lifting plate are mounted on the outer circumference of the guide shaft, and a pulling mold is provided at the inner bottom of the pulling frame, and the pulling mold is installed below the lifting plate; a positioning seat is provided at the inner bottom of the pulling frame, and a plurality of positioning grooves are provided on the top surface of the positioning seat, and a positioning part is provided at the bottom of the pulling mold, and the positioning part is installed in the positioning groove; the cross sections of the positioning part and the positioning groove are both convex-shaped.

[0007] Furthermore, a first-level product automatic pulling section assembly is provided between the product winding and step difference section assembly and the product pulling section assembly, a second-level product automatic pulling section assembly is provided between the product pulling section assembly and the product automatic cleaning section assembly, and a third-level product automatic pulling section assembly is provided between the product half-cutting section assembly and the product full-cutting section assembly; the first-level product automatic pulling section assembly, the second-level product automatic pulling section assembly and the third-level product automatic pulling section assembly have the same shape and structure; the first-level product automatic pulling section assembly includes a pulling machine frame, and pulling brackets are provided at both ends of the top surface of the pulling machine frame, and a clamping seat is provided inside the pulling bracket, and a row of pulling rods arranged in parallel are provided between the clamping seats, and a cylinder is provided on the top of the pulling bracket, and the end of the piston rod at the bottom of the cylinder is connected to the clamping seat; a vertically arranged moving shaft is provided on both sides of the clamping seat, and a guide groove is provided on both sides of the top of the pulling bracket, and the moving shaft passes through the guide groove; the upper end of the moving shaft is a free end, and the lower end of the moving shaft is connected to the clamping seat.

[0008] Furthermore, the side of the unwinding frame is provided with a lateral guide rail facing outward, a sliding frame is installed on the lateral guide rail, a plurality of stop gauges are provided on the front of the sliding frame, and the lateral guide rail and the sliding frame are slidably connected by a slider; the sliding frame is installed above the rolling platform; guide rails are provided on both sides of the inner bottom of the winding-in frame, and sliding adjustment seats are provided on both sides of the bottom of the winding-in bracket, and a slider is provided at the bottom of the sliding adjustment seat, and the slider is installed on the guide rail.

[0009] In the wide-width continuous punching equipment adopting the above technical solution, the operator installs the film to be punched on the automatic product unwinding section assembly, specifically, the film to be punched is put on the outer peripheral surface of the unwinding roller, and the film passes through the product full-cut section assembly and the product half-cut section assembly and is finally wound in the product winding and step difference section assembly, specifically, it is wound on the outer peripheral surface of the winding inflatable shaft, and the film is stably wound onto the outer peripheral surface of the winding inflatable shaft by pulling the inflatable shaft; the stepper motor is turned on, and the stepper motor controls the winding inflatable shaft to rotate, and the film passes through the automatic product unwinding section assembly, the product full-cut section assembly, the product half-cut section assembly and the product winding and step difference section assembly; the first cutting cylinder controls the cutting knife through the cutting piston rod to realize vertical lifting and adjustment, and the base is The first linear slider is used to achieve stable sliding adjustment along the first linear slide rail, and the sliding adjustment of the base drives the cutting table to achieve stable sliding adjustment, and the film passing through the cutting table is cut by the cutting knife; the sliding support foot is used to achieve sliding adjustment along the second linear guide rail by the second linear slider, and the sliding adjustment of the sliding support foot facilitates flexible adjustment of the lower cutting knife, and the second cutting hydraulic cylinder controls the upper cutting knife to achieve vertical lifting adjustment, and the lower cutting knife and the upper cutting knife are used to facilitate cutting of the film passing through the cutting cavity; the film is partially cut by the product half-cutting component, and the film is completely cut by the product full-cutting component; the cut film is wound and recycled by the product winding and step difference components. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0011] Figure 1 It is a structural schematic diagram of the wide-width continuous punching equipment of the present invention.

[0012] Figure 2 It is a top view of the wide continuous punching equipment of the present invention.

[0013] Figure 3 It is a front view of the wide continuous punching equipment of the present invention.

[0014] Figure 4 This is a structural schematic diagram of the connection between the product winding and step difference part assembly and the first-level product automatic pulling part assembly of the present invention.

[0015] Figure 5 This is a schematic structural diagram of the beating and drawing component of the product according to the present invention.

[0016] Figure 6 This is a schematic structural diagram of the automatic cleaning component of the product of the present invention.

[0017] Figure 7 This is a schematic structural diagram of the half-cut component of the product according to the present invention.

[0018] Figure 8 This is a schematic structural diagram of the fully cut components of the product of the present invention. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0020] like Figures 1 to 8As shown, a wide-width continuous punching device includes a product winding and step-difference unit 1, a product half-cutting unit 6, a product full-cutting unit 8, and a product automatic unwinding unit 9, which are connected in sequence from left to right; the product winding and step-difference unit 1 includes a winding frame 101, a winding bracket 105 is provided on the winding frame 101, a winding air shaft 106 is provided at the front position of the winding bracket 105, a stepping motor 107 is provided on the winding bracket 105, and the driving shaft of the stepping motor 107 is connected to the end of the winding air shaft 106; a plurality of traction units arranged in parallel are provided at the front position of the winding bracket 105. The inflatable shaft 108 is connected to the inflatable shaft 106 by pulling the inflatable shaft 108; the product half-cutting component 6 includes a base 603 and a top seat 605, and a guide shaft 604 is provided between the four corners of the base 603 and the top seat 605. The bottom of the base 603 is provided with a plurality of first linear sliders 602, which are mounted on the first linear slide rail 601. The top seat 605 is provided with a plurality of first cutting cylinders 608, and the lower part of each first cutting cylinder 608 is provided with a cutting piston rod 609, and the lower end of the cutting piston rod 609 is provided with a cutting lifting seat 610, and the cutting piston rod 609 is provided with a cutting lifting seat 610. A lock seat 611 is provided between the lower end and the cutting lift seat 610; both ends of the cutting lift seat 610 are sleeved on the outer circumference of the guide shaft 604, and a bearing sleeve 612 is provided between the cutting lift seat 610 and the guide shaft 604. A cutting table 606 is provided on the base 603, and a cutting knife 607 is provided at the bottom of the cutting lift seat 610. The cutting knife 607 is installed above the cutting table 606; the product cutting unit 8 includes a cutting frame 805, and the bottom of both ends of the cutting frame 805 are provided with sliding support feet 801, which are installed on the second linear slider 803. The second linear slider 8 03 is installed on the second linear guide rail 802, and a second cutting hydraulic cylinder 806 is provided on the top of the cutting frame 805, and a lifting tool holder 807 is provided at the bottom of the lifting tool holder 807. An upper cutting knife 808 is provided at the bottom of the lifting tool holder 807, and a lower cutting knife 804 is provided between the tops of the sliding support legs 801, and a cutting cavity 809 is provided between the upper cutting knife 808 and the lower cutting knife 804; the automatic product unwinding component 9 includes a unwinding frame 901, and a unwinding platform 903 and an unwinding roller 902 are provided on the front of the unwinding frame 901, and the unwinding roller 902 is installed above the unwinding platform 903.

[0021] In the wide-width continuous punching equipment of the present invention, the operator installs the film to be punched on the automatic product unwinding component 9, specifically, the film to be punched is placed on the outer peripheral surface of the unwinding roller 902, and the film passes through the product full-cut component 8 and the product half-cut component 6 and is finally wound in the product winding and step difference component 1, specifically, it is wound on the outer peripheral surface of the winding inflatable shaft 106, and the film is stably wound onto the outer peripheral surface of the winding inflatable shaft 106 by pulling the inflatable shaft 108; the stepper motor 107 is turned on, and the stepper motor 107 controls the winding inflatable shaft 106 to rotate, and the film passes through the automatic product unwinding component 9, the product full-cut component 8, the product half-cut component 6 and the product winding and step difference component 1; the first cutting cylinder 608 controls the cutting knife 607 through the cutting piston rod 609 to realize vertical lifting and adjustment, and the base 603 is adjusted by the first linear slider 6 02 realizes stable sliding adjustment along the first linear slide rail 601, and the sliding adjustment of the base 603 drives the cutting table 606 to realize stable sliding adjustment, and the film passing through the cutting table 606 is cut by the cutting knife 607; the sliding support foot 801 realizes sliding adjustment along the second linear guide rail 802 through the second linear slider 803, and the sliding adjustment of the sliding support foot 801 facilitates flexible adjustment of the lower cutting knife 804, and the second cutting hydraulic cylinder 806 controls the upper cutting knife 808 to realize vertical lifting adjustment, and the lower cutting knife 804 and the upper cutting knife 808 facilitate cutting of the film passing through the cutting cavity 809; the film is partially cut by the product half-cutting part component 6, and the film is completely cut by the product full-cutting part component 8; the cut film is wound and recycled by the product winding and step difference part component 1.

[0022] Preferably, an automatic product cleaning section assembly 5 is provided between the product rolling-in and step difference section assembly 1 and the product half-cutting section assembly 6. The automatic product cleaning section assembly 5 includes a cleaning frame 501. A transmission roller 502 and a sticky roller 503 are provided on the cleaning frame 501. The transmission roller 502 and the sticky roller 503 are arranged in parallel. The film passes between the transmission roller 502 and the sticky roller 503, and the film is transmitted by the transmission roller 502. The dust on the surface of the film is removed by the sticky roller 503, which greatly improves the efficiency of removing dust on the film.

[0023] Preferably, a product beating and pulling part assembly 3 is provided between the product winding and step difference part assembly 1 and the product automatic cleaning part assembly 5, and the product beating and pulling part assembly 3 includes a beating and pulling frame 301, a servo motor 302 is provided on the top of the beating and pulling frame 301, a screw rod 303 is provided on the lower part of the servo motor 302, and a lifting plate 304 is provided on the lower end of the screw rod 303, and the beating and pulling frame 301 is provided with four vertically arranged guide shafts 305, and the four corners of the lifting plate 304 are mounted on the outer circumference of the guide shaft 305, and a beating and pulling mold 306 is provided on the inner bottom of the beating and pulling frame 301, and the beating and pulling mold 306 is installed below the lifting plate 304; the servo motor 302 controls the lifting plate 304 through the screw rod 303 to realize vertical lifting and lowering adjustment along the axial direction of the guide shaft 305, so that the beating and pulling mold 306 and the lifting plate 304 are separated and controlled, and the beating and pulling processing of the film is facilitated by the beating and pulling mold 306.

[0024] Preferably, a positioning seat 307 is provided at the inner bottom of the drawing machine frame 301, and a plurality of positioning grooves 308 are provided on the top surface of the positioning seat 307. A positioning portion 309 is provided at the bottom of the drawing mold 306, and the positioning portion 309 is installed in the positioning groove 308. The cross-sections of the positioning portion 309 and the positioning groove 308 are both convex-shaped. The positioning portion 309 and the positioning groove 308 are used in conjunction with each other to ensure that the drawing mold 306 is firmly installed on the positioning seat 307.

[0025] Preferably, a first-level product automatic pulling section component 2 is provided between the product rolling and step difference section component 1 and the product beating section component 3, a second-level product automatic pulling section component 4 is provided between the product beating section component 3 and the product automatic cleaning section component 5, and a third-level product automatic pulling section component 7 is provided between the product half-cutting section component 6 and the product full-cutting section component 8; the first-level product automatic pulling section component 2, the second-level product automatic pulling section component 4 and the third-level product automatic pulling section component 7 have the same shape and structure; the first-level product automatic pulling section component 2 includes a pulling machine frame 201, and both ends of the top surface of the pulling machine frame 201 are provided with pulling brackets 202, A clamping seat 203 is provided inside the material bracket 202, and a row of parallel pulling rods 204 are provided between the clamping seats 203. A cylinder 205 is provided on the top of the pulling bracket 202, and the end of the piston rod at the bottom of the cylinder 205 is connected to the clamping seat 203; the film is conveniently pulled through the first-level product automatic pulling portion assembly 2, the second-level product automatic pulling portion assembly 4 and the third-level product automatic pulling portion assembly 7, so that the film is conveyed forward; the cylinder 205 controls the clamping seat 203 to realize vertical lifting and lowering adjustment, thereby vertically lifting and lowering the pulling rod 204, and the film is conveniently pulled forward through the pulling rod 204.

[0026] Preferably, both sides of the clamping seat 203 are provided with a vertically arranged movable shaft 207, and both sides of the top of the pulling bracket 202 are provided with a guide groove 206, and the movable shaft 207 passes through the guide groove 206; the upper end of the movable shaft 207 is a free end, and the lower end of the movable shaft 207 is connected to the clamping seat 203; when the clamping seat 203 is vertically lifted and lowered, the movable shaft 207 is used to achieve stable vertical movement adjustment along the guide groove 206, so that the lifting and lowering stability of the clamping seat 203 is better.

[0027] Preferably, a lateral guide rail 904 is provided on the outward-facing side of the unwinding frame 901, a sliding frame 905 is installed on the lateral guide rail 904, a plurality of stoppers 906 are provided on the front of the sliding frame 905, and the lateral guide rail 904 and the sliding frame 905 are slidably connected via a slider; the sliding frame 905 is installed above the unwinding platform 903; the sliding frame 905 is horizontally slidably adjusted along the lateral guide rail 904, and the stoppers 906 are conveniently moved and adjusted horizontally through the sliding frame 905, and the top of the film is protected by the stoppers 906, and obstacles on the film being transported forward are removed by the stoppers 906; thereby greatly improving safety.

[0028] Preferably, guide rails 103 are provided on both sides of the inner bottom of the winding frame 101, and sliding adjustment seats 102 are provided on both sides of the bottom of the winding bracket 105. A slider 104 is provided at the bottom of the sliding adjustment seat 102, and the slider 104 is installed on the guide rail 103; the sliding adjustment seat 102 is slidably adjusted along the guide rail 103 through the slider 104, thereby facilitating the sliding adjustment of the winding bracket 105, and the movement adjustment of the winding bracket 105 facilitates the movement adjustment of the winding inflatable shaft 106, so that the winding inflatable shaft 106 can more accurately wind up the film.

[0029] Preferably, a sticky roller 504 is provided on the cleaning frame 501, and the sticky roller 504 is arranged parallel to the sticky roller 503, and the sticky roller 503 is installed between the driving roller 502 and the sticky roller 504; a sticky paper roll storage box 505 is provided on the top of the cleaning frame 501, and the front of the sticky paper roll storage box 505 is an open structure, and the front of the sticky paper roll storage box 505 faces the sticky roller 504, and a sticky paper roll 506 is installed inside the sticky paper roll storage box 505; the sticky roller 504 can be used to stick to and remove dust on the surface of the sticky roller 503. To remove the dust on the surface of the sticky roller 503, the operator installs the sticky paper roll 506 on the outer peripheral surface of the sticky roller 504, and uses the sticky paper roll 506 to stick to and remove the dust on the surface of the sticky roller 503, thereby greatly improving the efficiency of dust removal.

[0030] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection defined in the claims.

Claims

1. A wide-width continuous punching device, comprising a product winding and step-difference unit, a product half-cutting unit, a product full-cutting unit, and a product automatic unwinding unit, connected in sequence from left to right; The product winding and step difference assembly includes a winding frame, a winding bracket is provided on the winding frame, a winding air shaft is provided at the front position of the winding bracket, a stepper motor is provided on the winding bracket, and the drive shaft of the stepper motor is connected to the end of the winding air shaft; a plurality of parallel traction air shafts are provided at the front position of the winding bracket, and the traction air shafts are connected to the winding air shaft; Its characteristics are: The product half-cutting assembly includes a base and a top seat. Guide shafts are provided between the four corners of the base and the top seat. A plurality of first linear sliders are provided at the bottom of the base. The first linear sliders are mounted on the first linear slide rails. A plurality of first cutting cylinders are provided on the top seat. A cutting piston rod is provided at the lower part of each first cutting cylinder. A cutting lift seat is provided at the lower end of the cutting piston rod. A lock seat is provided between the lower end of the cutting piston rod and the cutting lift seat. Both ends of the cutting lift seat are sleeved on the outer circumference of the guide shaft. A bearing sleeve is provided between the cutting lift seat and the guide shaft. A cutting table is provided on the base. A cutting knife is provided at the bottom of the cutting lift seat. The cutting knife is mounted above the cutting table. The product cutting unit assembly includes a cutting frame, both ends of the cutting frame are provided with sliding support feet at the bottom, the sliding support feet are mounted on the second linear slider, the second linear slider is mounted on the second linear guide rail, the top of the cutting frame is provided with a second cutting hydraulic cylinder, the lower part of the second cutting hydraulic cylinder is provided with a lifting tool holder, the bottom of the lifting tool holder is provided with an upper cutting knife, the lower cutting knife is provided between the tops of the sliding support feet, and a cutting cavity is provided between the upper cutting knife and the lower cutting knife; The automatic product unwinding unit includes an unwinding frame, a unwinding platform and an unwinding roller are provided on the front of the unwinding frame, and the unwinding roller is installed above the unwinding platform; An automatic product cleaning unit is provided between the product winding and step difference unit and the product half-cutting unit. The automatic product cleaning unit includes a cleaning frame on which a transmission roller and a sticky roller are provided. The transmission roller and the sticky roller are arranged in parallel. A product drawing unit assembly is provided between the product winding and step difference unit assembly and the product automatic cleaning unit assembly. The product drawing unit assembly includes a drawing frame. A servo motor is provided on the top of the drawing frame. A screw is provided at the bottom of the servo motor. A lifting plate is provided at the lower end of the screw. The drawing frame is provided with four vertically arranged guide shafts. The four corners of the lifting plate are sleeved on the outer circumference of the guide shaft. A drawing mold is provided at the inner bottom of the drawing frame. The drawing mold is installed below the lifting plate. A positioning seat is provided at the inner bottom of the drawing frame, a plurality of positioning grooves are provided on the top surface of the positioning seat, and a positioning part is provided at the bottom of the drawing die, which is installed in the positioning groove; The cross sections of the positioning portion and the positioning groove are both convex-shaped; A first-level product automatic pulling section assembly is provided between the product rolling-in and step-difference section assembly and the product beating and drawing section assembly, a second-level product automatic pulling section assembly is provided between the product beating and drawing section assembly and the product automatic cleaning section assembly, and a third-level product automatic pulling section assembly is provided between the product half-cutting section assembly and the product full-cutting section assembly; the first-level product automatic pulling section assembly, the second-level product automatic pulling section assembly and the third-level product automatic pulling section assembly have the same shape and structure; The first-level product automatic pulling part assembly includes a pulling frame, with pulling brackets at both ends of the top surface of the pulling frame, clamping seats inside the pulling brackets, and a row of parallel pulling rods between the clamping seats. A cylinder is provided on the top of the pulling bracket, and the end of the piston rod at the bottom of the cylinder is connected to the clamping seat; A vertically arranged movable shaft is provided on both sides of the clamping seat, and a guide groove is provided on both sides of the top of the pulling bracket, through which the movable shaft passes; the upper end of the movable shaft is a free end, and the lower end of the movable shaft is connected to the clamping seat; A lateral guide rail is provided on the outward-facing side of the unwinding frame, a sliding frame is mounted on the lateral guide rail, a plurality of stoppers are provided on the front of the sliding frame, and a sliding block is provided between the lateral guide rail and the sliding frame to achieve sliding connection; the sliding frame is mounted above the unwinding platform; Guide rails are provided on both sides of the inner bottom of the rolling-in frame, sliding adjustment seats are provided on both sides of the bottom of the rolling-in bracket, and sliders are provided at the bottom of the sliding adjustment seats, which are installed on the guide rails.

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