Slitting device for PET (Polyethylene Terephthalate) composite film

Abstract

The utility model provides a slitting device for a PET composite film, and belongs to the technical field of machinery. The problems that in the prior art, operation is difficult in the initial tape threading stage of a film, and the film is prone to being damaged by a cutter are solved. The slitting device for the PET composite film comprises a rack and is characterized by further comprising a conveying roller, a slitting roller, a flow dividing roller and a cutter assembly, the two ends of the conveying roller, the two ends of the slitting roller and the two ends of the flow dividing roller are rotationally connected to the rack, the conveying roller is close to the left end of the rack, the slitting roller is located on the right side of the conveying roller, and a gap is formed between the slitting roller and the conveying roller; the cutter assembly is movably connected to the upper portion of the rack. The device has the advantages that the structure is compact, the position, number and spacing of the cutters can be flexibly adjusted, and the cutters can be far away from the slitting roller, so that the initial tape threading process and the cutter loading and unloading process of a film are more convenient, the operation is convenient, the film damage risk is reduced, and the efficiency and the productivity are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of machinery and relates to a slitting device for a PET composite film. Background Art

[0002] The PET composite film slitting device is a special device used to cut large rolls of PET composite film into required width specifications.

[0003] The existing PET composite film slitting device has many parts and a complex structure. When working, the cutter rests on the slitting roller, and the PET composite film remains in a tensioned state as it passes through the slitting roller. As the PET composite film continues to move, the cutter cuts the PET composite film into required widths, and the slit PET composite film is then transported to the subsequent process for winding and packaging. The number and spacing of the cutters can be adjusted according to the slitting requirements, but the relative position of the cutter and the slitting roller is fixed. In the initial threading stage of the PET composite film, the end of the film needs to be accurately guided into the narrow space between the cutter and the slitting roller, which makes the operation difficult and the film is easily damaged by the cutter during the process. Utility Model Content

[0004] The purpose of the utility model is to provide a PET composite film slitting device which has a simple and compact structure and is convenient to use in view of the above problems existing in the prior art.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A PET composite film slitting device comprises a frame, characterized in that it also comprises a conveying roller, a slitting roller, a diverter roller and a cutter assembly, wherein both ends of the conveying roller, the slitting roller and the diverter roller are rotatably connected to the frame, the conveying roller is close to the left end of the frame, the slitting roller is located on the right side of the conveying roller and there is a gap between the two, the cutter assembly is movably connected to the upper part of the frame, the cutter position and the number of cutters in the cutter assembly are adjustable, the cutters in the cutter assembly can be adjusted to abut against the slitting roller or away from the slitting roller, the number of cutters in the cutter assembly can be increased or decreased and the spacing between adjacent cutters can be adjusted, and the number of diverter rollers is two, the two diverter rollers are directly opposite each other up and down and the two diverter rollers are close to the right end of the frame.

[0007] The PET composite film slitting device arranges the conveying roller, slitting roller, diverter roller and adjustable cutter assembly on the frame in a reasonable manner, so that the structure of the whole device becomes simpler and more compact, the number of parts is reduced, and the assembly and maintenance process of the equipment is simplified; the design of the cutter assembly allows the position, number and spacing between adjacent cutters to be adjustable, and can be quickly adjusted according to different slitting requirements, thereby improving the adaptability and production efficiency of the equipment; at the same time, the cutter assembly can be adjusted to abut against the slitting roller or away from the slitting roller, so that the initial threading process of the PET composite film is more convenient, the operation difficulty is reduced, the risk of film damage is reduced, and the efficiency and production capacity of the whole slitting process are improved; the slitting roller further improves the tension control of the film by the device, which helps the slitting of the cutter to be more accurate; the two diverter rollers facing each other up and down can effectively guide the slit PET composite film to smoothly enter the subsequent winding and packaging process, and the multiple film strips after slitting are separated and conveyed by passing through the upper diverter roller and the lower diverter roller alternately, so as to avoid mutual friction or adhesion, and facilitate the subsequent winding work.

[0008] In the above-mentioned PET composite film slitting device, the cutter assembly includes a rotating rod, a swing arm, a connecting rod, a cutter and a handwheel, the two ends of the rotating rod are rotatably connected to the frame and one end of the rotating rod extends out of the frame and is fixedly connected to the handwheel, there are two swing arms, the inner ends of the two swing arms are symmetrically fixedly connected to the two ends of the rotating rod, the outer ends of the two swing arms are detachably connected to the two ends of the connecting rod, and the cutter is detachably connected to the connecting rod.

[0009] The structure of the cutter assembly provides a more flexible and efficient cutter adjustment and replacement mechanism. The hand wheel drives the rotating rod to rotate, driving the swing arm and connecting rod connected to it to swing together, thereby adjusting the relative position between the cutter and the slitting roller, so that the cutter can be close to or away from the slitting roller. When the cutter is away from the slitting roller, it is convenient for the threading operation of the PET composite film and the installation of the cutter. The cutter is connected to the connecting rod in a detachable manner, so that the number of cutters can be increased or decreased according to the slitting requirements, and the position between adjacent cutters can be set according to the requirements to adapt to slitting tasks of different width specifications. It is also convenient to replace or maintain the cutter separately without disassembling the entire cutter assembly, reducing maintenance costs and downtime.

[0010] In the above-mentioned PET composite film slitting device, the number of the cutters is several.

[0011] By adjusting the number and position of the cutters, it is possible to achieve slitting from wide film to multiple narrow films, meeting the film width specifications requirements of different customers, enhancing the flexibility and versatility of the equipment, greatly improving production efficiency, and each cutter can be disassembled and replaced independently, reducing maintenance costs.

[0012] In the above-mentioned PET composite film slitting device, the cutter is a circular cutter, the cutter is axially fixed to the connecting rod and can rotate circumferentially.

[0013] The circumferential rotation of the circular knife provides a continuous cutting surface. Compared with a stationary linear knife, it can provide a more uniform cutting force, reduce burrs and irregularities on the cutting edge, and reduce stretching and tearing during the cutting process, thereby improving the flatness, smoothness and cutting efficiency of the cutting surface.

[0014] In the above-mentioned PET composite film slitting device, there is a gap between the two swing arms and the frames on both sides, and there is a gap between the two ends of the connecting rod and the frames on both sides.

[0015] Such a structure ensures the swing freedom of the swing arm, making the swing more flexible and not in contact with the frame during swinging, thus reducing mechanical wear and improving the operating stability and life of the equipment.

[0016] In the above-mentioned PET composite film slitting device, the number of the conveying rollers is two, and the two conveying rollers are adjacent to each other up and down.

[0017] The PET composite film is conveyed between two conveyor rollers. The two conveyor rollers can better control the tension and flatness of the PET composite film during the conveying process, and the guiding effect on the PET composite film is more precise and stable, which is helpful for the flatness and stability of the subsequent slitting process. According to the actual situation, the rotation of the conveyor roller can be driven by an external drive component or conveyed at the front end or pulled at the rear end of the production line.

[0018] In the above-mentioned PET composite film slitting device, the lower conveying roller of the two conveying rollers is opposite to the slitting roller on the left and right.

[0019] The conveying roller and the slitting roller work together to keep the PET composite film in proper tension during conveying and slitting, which is beneficial to improving the slitting quality.

[0020] In the above-mentioned PET composite film slitting device, the rotating rod is located above the conveying roller and there is a distance between the rotating rod and the conveying roller.

[0021] Such a structure makes the device more compact, and the movements of the rotating rod and the conveying roller do not affect each other.

[0022] In the above-mentioned PET composite film slitting device, through holes are provided at both ends of the swing arm, and the through holes at both ends of the swing arm are matched with the rotating rod and the connecting rod respectively.

[0023] The provision of the through hole facilitates the connection between the swing arm and the rotating rod and the connecting rod.

[0024] Compared with the prior art, the PET composite film slitting device of the present invention rationally arranges the conveying roller, slitting roller, diverter roller and adjustable cutter assembly on the frame, so that the structure of the entire device becomes simpler and more compact; the position, number and spacing between adjacent cutters are adjustable, and can be flexibly adjusted according to different slitting requirements, thereby improving the adaptability and production efficiency of the equipment; and the cutter can be adjusted to rest against the slitting roller or away from the slitting roller, making the initial threading process of the PET composite film and the loading, unloading and replacement process of the cutter more convenient, reducing the difficulty of operation, reducing the risk of film damage, and improving efficiency and production capacity; the two diverter rollers facing each other up and down can effectively guide the multiple film strips after slitting to alternately pass through the upper diverter roller and the lower diverter roller, so that adjacent film strips are separated and conveyed, avoiding mutual friction or adhesion, and facilitating subsequent winding work. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional structural schematic diagram of the PET composite film slitting device;

[0026] Figure 2 It is a right view structural schematic diagram of the PET composite film slitting device;

[0027] Figure 3 It is a front cross-sectional view of the slitting device of the PET composite film;

[0028] Figure 4 It is a structural schematic diagram of the state in which the cutting knife of the PET composite film slitting device is away from the slitting roller.

[0029] In the figure, 1, frame; 2, hand wheel; 3, rotating rod; 4, conveying roller; 5, cutter; 6, swing arm; 7, through hole; 8, connecting rod; 9, slitting roller; 10, diverter roller. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly mounted on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is considered to be "fixed to" another component, it may be directly fixed on the other component or there may be a central component at the same time.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more related listed items.

[0033] like Figure 1 As shown in FIG. 4 , the slitting device of the PET composite film includes a frame 1, and also includes a conveying roller 4, a slitting roller 9, a diverter roller 10 and a cutter 5 assembly. Both ends of the conveying roller 4, the slitting roller 9 and the diverter roller 10 are rotatably connected to the frame 1, the conveying roller 4 is close to the left end of the frame 1, the slitting roller 9 is located on the right side of the conveying roller 4 and there is a gap between the two, the cutter 5 assembly is movably connected to the upper part of the frame 1, the position of the cutter 5 and the number of the cutters 5 in the cutter 5 assembly are adjustable, the cutters 5 in the cutter 5 assembly can be adjusted to abut against the slitting roller 9 or away from the slitting roller, the number of the cutters 5 in the cutter 5 assembly can be increased or decreased and the spacing between adjacent cutters 5 is adjustable, and the number of the diverter rollers 10 is two, the two diverter rollers 10 are directly opposite each other up and down and the two diverter rollers 10 are close to the right end of the frame 1.

[0034] The cutter 5 assembly includes a rotating rod 3, a swing arm 6, a connecting rod 8, a cutter 5 and a handwheel 2. Both ends of the rotating rod 3 are rotatably connected to the frame 1, and one end of the rotating rod 3 extends out of the frame 1 and is fixedly connected to the handwheel 2. There are two swing arms 6. The inner ends of the two swing arms 6 are symmetrically fixedly connected to the two ends of the rotating rod 3, and the outer ends of the two swing arms 6 are detachably connected to the two ends of the connecting rod 8. The cutter 5 is detachably connected to the connecting rod 8.

[0035] The number of the cutters 5 is several.

[0036] The cutter 5 is a circular cutter, which is axially fixed to the connecting rod 8 and can rotate circumferentially.

[0037] There is a gap between the two swing arms 6 and the frames 1 on both sides, and there is a gap between the two ends of the connecting rod 8 and the frames 1 on both sides.

[0038] There are two conveying rollers 4 , and the two conveying rollers 4 are adjacent to each other up and down.

[0039] The lower conveying roller 4 among the two conveying rollers 4 is opposite to the slitting roller 9 on the left and right.

[0040] The rotating rod 3 is located above the conveying roller 4 and has a distance therebetween.

[0041] Through holes 7 are formed at both ends of the swing arm 6 , and the through holes 7 at both ends of the swing arm 6 match the rotating rod 3 and the connecting rod 8 respectively.

[0042] The PET composite film slitting device of the present invention arranges the conveying roller 4, the slitting roller 9, the diverter roller 10 and the adjustable cutter 5 assembly on the frame 1 in a reasonable manner, so that the structure of the whole device becomes simpler and more compact, the number of parts is reduced, and the assembly and maintenance process of the equipment are simplified; the design of the cutter 5 assembly allows the position, number and spacing between adjacent cutters 5 to be adjustable, and can be quickly adjusted according to different slitting requirements, thereby improving the adaptability and production efficiency of the equipment, and at the same time, the cutter 5 assembly can be adjusted to abut against the slitting roller 9 or away from the slitting roller 9, so that the PET composite film The initial threading process of the composite film is more convenient, which reduces the difficulty of operation, reduces the risk of film damage, and improves the efficiency and capacity of the entire slitting process; the slitting roller 9 further improves the tension control of the film by the present device, which helps the cutter 5 to cut more accurately; the two upper and lower diverter rollers 10 facing each other can effectively guide the slit PET composite film to smoothly enter the subsequent winding and packaging process, and the multiple film strips after slitting are separated and transported between adjacent film strips by alternately passing through the upper diverter roller 10 and the lower diverter roller 10, avoiding mutual friction or adhesion, which is convenient for subsequent winding work.

[0043] The structure of the cutter 5 assembly provides a more flexible and efficient adjustment and replacement mechanism for the cutter 5. The hand wheel 2 drives the rotating rod 3 to rotate, driving the swing arm 6 and the connecting rod 8 connected thereto to swing together, thereby adjusting the relative position between the cutter 5 and the slitting roller 9, so that the cutter 5 can be close to or away from the slitting roller 9. When the cutter 5 is away from the slitting roller 9, it is convenient for the threading operation of the PET composite film and also for the installation of the cutter 5. The cutter 5 is connected to the connecting rod 8 in a detachable manner, so that the number of cutters 5 can be increased or decreased according to the slitting requirements, and the positions between adjacent cutters 5 can be set according to the requirements to adapt to slitting tasks of different width specifications. It is also convenient to replace or maintain the cutter 5 separately without disassembling the entire cutter 5 assembly, thereby reducing maintenance costs and downtime.

[0044] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention and are not intended to limit the present invention. As long as they are within the spirit of the present invention, appropriate changes and modifications to the above embodiments are within the scope of protection required by the present invention.

Claims

1. A PET composite film slitting device, comprising a frame, characterized in that: It also includes a conveying roller, a slitting roller, a diverter roller and a cutter assembly, wherein both ends of the conveying roller, the slitting roller and the diverter roller are rotatably connected to the frame, the conveying roller is close to the left end of the frame, the slitting roller is located on the right side of the conveying roller and there is a gap between the two, the cutter assembly is movably connected to the upper part of the frame, the cutter position and the number of cutters in the cutter assembly are adjustable, the cutters in the cutter assembly can be adjusted to rest against the slitting roller or away from the slitting roller, the number of cutters in the cutter assembly can be increased or decreased and the spacing between adjacent cutters is adjustable, and the number of diverter rollers is two, the two diverter rollers are directly opposite each other up and down and the two diverter rollers are close to the right end of the frame.

2. The slitting device for PET composite film according to claim 1, characterized in that: The cutter assembly includes a rotating rod, a swing arm, a connecting rod, a cutter and a handwheel, the two ends of the rotating rod are rotatably connected to the frame and one end of the rotating rod extends out of the frame and is fixedly connected to the handwheel, there are two swing arms, the inner ends of the two swing arms are symmetrically fixedly connected to the two ends of the rotating rod, the outer ends of the two swing arms are detachably connected to the two ends of the connecting rod, and the cutter is detachably connected to the connecting rod.

3. The slitting device for PET composite film according to claim 2, characterized in that: The number of the cutters is several.

4. The PET composite film slitting device according to claim 3, characterized in that: The cutter is a circular cutter, which is axially fixed to the connecting rod and can rotate circumferentially.

5. The PET composite film slitting device according to claim 4, characterized in that: There is a gap between the two swing arms and the frames on both sides, and there is a gap between the two ends of the connecting rod and the frames on both sides.

6. The PET composite film slitting device according to claim 5, characterized in that: The number of the conveying rollers is two, and the two conveying rollers are adjacent to each other up and down.

7. The PET composite film slitting device according to claim 6, characterized in that: The lower conveying roller among the two conveying rollers is opposite to the slitting roller on the left and right.

8. The PET composite film slitting device according to claim 7, characterized in that: The rotating rod is located above the conveying roller and has a distance between the rotating rod and the conveying roller.

9. The PET composite film slitting device according to claim 8, characterized in that: Both ends of the swing arm are provided with through holes, and the through holes at both ends of the swing arm are matched with the rotating rod and the connecting rod respectively.

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