Fixed-width cutting device for PVC coiled material

Abstract

The utility model is suitable for the field of coiled material production equipment, and discloses a fixed-width cutting device for a PVC coiled material, which comprises a rack and a cutter assembly arranged on the rack, the device further comprises a cooling air pipe, an air conveying pipe, a heat exchanger and an induced draft fan. The two cooling air pipes are arranged on the rack at the same time, and the length direction of the cooling air pipes is parallel to the width direction of the PVC coiled material. The air conveying pipe is connected with the two cooling air pipes at the same time. And the heat exchanger is connected with the air conveying pipe. And the induced draft fan is connected with the heat exchanger. According to the fixed-width cutting device for the PVC coiled material, the cooling air pipe is arranged on the rack, so that the fixed-width cutting device for the PVC coiled material not only has the function of fixed-width cutting of the PVC coiled material, but also has the function of further cooling the PVC coiled material, and the fixed-width cutting device for the PVC coiled material is matched with an existing cooling device for production of the PVC coiled material for use, so that the PVC coiled material such as a PVC film can be fully cooled before being wound, and the production efficiency is improved. And the problem of adhesion of the PVC film during rolling of the PVC film is solved.

Description

Technical Field

[0001] The utility model relates to the field of coil production equipment, in particular to a width-fixed cutting device for PVC coils. Background Art

[0002] PVC coil is a soft rolled paving material made of polyvinyl chloride, including PVC film, PVC wallboard, PVC floor, etc. Among them, PVC film has excellent chemical resistance, weather resistance and plasticity. According to different uses and requirements, PVC film can have different thicknesses, colors, textures and surface characteristics, enabling it to be used in fields such as architectural decoration, food packaging, medical supplies, advertising signs, etc.

[0003] Existing PCV film production devices usually include a mixer, a planetary extruder, a calender, a filtration extruder, a calender, a drying component, a cooling component, a width-fixed cutting component and a winding component, etc. (such as the production device of a transparent PVC coil disclosed in the publication number CN117245890B). Among them, the drying component is used to dry the cleaned PVC film, and the cooling component is used to cool the dried PVC film. However, it is found in actual production that when the PVC film is wound, it is easy to have the problem of film adhesion due to its temperature not being completely cooled.

[0004] It can be seen that the existing technology still needs to be improved. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a width-fixed cutting device for PVC coils, aiming to set cooling air ducts on the width-fixed cutting device so that the PVC film can be further cooled before winding, thereby solving the adhesion problem that easily occurs when the PVC film is wound.

[0006] To achieve the above purpose, the solution provided by the utility model is:

[0007] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0008] A width-fixed cutting device for PVC coils includes a frame and a cutter assembly arranged on the frame; it further includes:

[0009] Cooling air ducts. There are two cooling air ducts in total and they are arranged on the frame at the same time. The length direction of the cooling air ducts is parallel to the width direction of the PVC coil.

[0010] An air delivery pipe, the air delivery pipe is connected to two cooling air pipes simultaneously,

[0011] A heat exchanger, the heat exchanger is connected to the air delivery pipe,

[0012] An induced draft fan, the induced draft fan is connected to the heat exchanger;

[0013] Wherein, the cooling air pipes are respectively used for blowing cooling air to the front and back surfaces of the PVC coil.

[0014] Preferably, the fixed-width cutting device for the PVC coil further includes a first tensioning roller; there are multiple first tensioning rollers, and they are simultaneously rotatably arranged on the frame, and the first tensioning rollers are used for tensioning the cut PVC coil; the cooling air pipes are respectively located above and below the cut PVC coil.

[0015] Preferably, a plurality of air outlet holes are formed in the cooling air pipe along the length direction of the cooling air pipe; the air outlet holes face the front and back surfaces of the PVC coil.

[0016] Preferably, the air delivery pipe includes:

[0017] Air delivery branch pipes, there are two air delivery branch pipes, and they are respectively detachably connected to the two cooling air pipes;

[0018] An air delivery main pipe, the air delivery main pipe is connected to the heat exchanger and the two air delivery branch pipes, and a detachable filter screen is provided on the air delivery main pipe.

[0019] Preferably, the fixed-width cutting device for the PVC coil further includes:

[0020] A second tensioning roller, the second tensioning roller is rotatably arranged on the frame and is located at the input end of the fixed-width cutting device,

[0021] A traction roller group, the traction roller group is rotatably arranged on the frame and is located below the cutter assembly,

[0022] A guiding roller group, the guiding roller group is rotatably arranged on the frame and is located below the traction roller group and the second tensioning roller;

[0023] Wherein, the second tensioning roller is used for tensioning the PVC coil to be pulled below the cutter assembly, the traction roller group is used for pulling and supporting the PVC coil, and the guiding roller group is used for guiding the side material of the cut PVC coil out of the fixed-width cutting device.

[0024] Preferably, the cutter assembly includes:

[0025] A gantry, the gantry is arranged on the frame;

[0026] A cylinder body, both ends of the cylinder body are respectively connected to a gantry, and the length direction of the cylinder body is consistent with the width direction of the PVC coil material. A first cavity and a second cavity are provided inside the cylinder body along its length direction, and openings communicating with the first cavity and the second cavity are provided on the cylinder wall of the cylinder body;

[0027] A first lead screw, the first lead screw is rotatably arranged in the first cavity along the axial direction of the cylinder body, and one end of the first lead screw extends out of the gantry;

[0028] A second lead screw, the second lead screw is rotatably arranged in the second cavity, and one end of the second lead screw extends out of the gantry. The outer ends of the second lead screw and the first lead screw are respectively located on both sides of the gantry;

[0029] Moving seats, there are two moving seats, and the two moving seats are respectively sleeved on the first lead screw and the second lead screw, and the moving seats are respectively movably connected to the cavity walls of the first cavity and the second cavity;

[0030] A cutter mechanism, the cutter mechanism is connected to the moving seat.

[0031] Preferably, the cutter mechanism includes:

[0032] An annular member, the annular member is movably sleeved on the cylinder body, and the inner side of the annular member is connected to the moving seat;

[0033] A tool holder, the tool holder is connected to the outer side of the annular member.

[0034] Preferably, both ends of the cylinder body are rotatably connected to the gantry; the cutter assembly further includes:

[0035] A gear, the gear is fixedly sleeved on the cylinder body;

[0036] A worm, the worm is rotatably arranged on the gantry, and the worm meshes with the gear;

[0037] A first handwheel, the first handwheel is connected to the end of the worm.

[0038] Preferably, the width-fixed cutting device for the PVC coil material further includes two second handwheels, and the two second handwheels are respectively arranged at the outer ends of the first lead screw and the second lead screw.

[0039] Furthermore, the PVC coil material can be a PVC film.

[0040] Beneficial effects:

[0041] The utility model provides a device for width-fixed cutting of PVC coils. By arranging a cooling air duct on the frame, the device for width-fixed cutting of PVC coils not only has the function of width-fixed cutting of PVC coils, but also has the function of further cooling the PVC coils. Cooperating with the existing cooling device for PVC coil production, it can ensure that PVC coils such as PVC films are fully cooled before winding, so that the problem of PVC film adhesion does not occur when the PVC film is wound. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 is a schematic structural view of the device for width-fixed cutting of PVC coils provided by the utility model Figure 1 .

[0043] Figure 2 is Figure 1 an enlarged view of part A in

[0044] Figure 3 is a schematic structural view of the device for width-fixed cutting of PVC coils provided by the utility model Figure 2 .

[0045] Figure 4 is Figure 3 an enlarged view of part B in

[0046] Figure 5 is Figure 3 an enlarged view of part C in

[0047] Figure 6 is a simplified connection diagram of the heat exchanger and the main air delivery pipe.

[0048] Figure 7 is a schematic structural view of the device for width-fixed cutting of PVC coils provided by the utility model Figure 3 .

[0049] Figure 8 is a simplified structural diagram of the device for width-fixed cutting of PVC coils provided by the utility model.

[0050] Description of the reference numerals in the drawings:

[0051] 1 - frame;

[0052] 2 - first tensioning roller;

[0053] 3 - cooling air duct; 31 - air outlet hole;

[0054] 41 - air delivery branch pipe; 42 - main air delivery pipe;

[0055] 5 - heat exchanger; 6 - induced draft fan; 7 - PVC coil; 8 - filter screen; 9 - second tensioning roller; 10 - traction roller group; 11 - first guide roller; 12 - second guide roller; 13 - limiting plate;

[0056] 14 - Cutting tool assembly; 141 - Gantry; 142 - Cylinder; 1421 - First cavity; 1422 - Second cavity; 1423 - Opening; 143 - First lead screw; 144 - Second lead screw; 145 - Movable seat; 146 - Cutting tool mechanism; 1461 - Ring-shaped member; 1462 - Tool holder; 147 - Gear; 148 - Worm

[0057] 15 - First handwheel; 16 - Second handwheel. Detailed implementation mode

[0058] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0059] It should be noted that all the directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0060] It should also be noted that when an element is referred to as "fixed to" or "provided on" another element, it can be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

[0061] In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0062] Please refer to Figures 1 to 3 and Figure 6, the present utility model provides a width - fixed cutting device for PVC coils. This width - fixed cutting device is applicable to the width - fixed cutting of PVC coils 7 including PVC films, and is placed between the cooling component and the winding component of the existing PVC coil 7. Specifically, the width - fixed cutting device for PVC coils includes a frame 1, a cutting knife assembly 14, a cooling air duct 3, an air delivery duct, a heat exchanger 5, and an induced draft fan 6.

[0063] Among them, the cutting knife assembly 14 is arranged on the frame 1 and is used for cutting the PVC coil 7 so that the PVC coil 7 is cut into the width required by customers. There are two cooling air ducts 3 in total, which are simultaneously arranged on the frame 1. The length direction of the cooling air duct 3 is parallel to the width direction of the PVC coil 7, so that the cooling air ducts 3 are respectively used to blow cooling air to the front and back of the PVC coil 7, thereby further driving the heat on the surface of the PVC coil 7 by the cooling air, and ensuring that the coils such as PVC films can be further cooled before winding, so as to ensure that there will be no adhesion problem when the PVC film is wound. The air delivery duct is connected to the two cooling air ducts 3 at the same time, and the air delivery duct is used to transport the cooling air to the cooling air ducts 3; the heat exchanger 5 is connected to the air delivery duct, and the induced draft fan 6 is connected to the heat exchanger 5. The induced draft fan 6 is used to draw air into the heat exchanger 5 and use the heat exchanger 5 to cool the air, thereby ensuring the effect of the cooling air in cooling the PVC coil 7.

[0064] It can be seen that by arranging the cooling air duct 3 on the frame 1, the width - fixed cutting device for PVC coils of the present utility model not only has the function of width - fixed cutting of the PVC coil 7, but also has the function of further cooling the PVC coil 7. Cooperating with the use of the existing cooling device for the production of PVC coil 7, it can ensure that the PVC coils 7 such as PVC films are fully cooled before winding, so that there will be no adhesion problem of the PVC film when winding.

[0065] In addition, compared with the method of cooling the PVC coil 7 by arranging the cooling air duct 3 at the winding component, the setting of the cooling air duct 3 of the present utility model will not affect the lifting of the wound PVC coil 7.

[0066] It can be understood that the setting of the induced draft fan 6 and the heat exchanger 5 of the present utility model can not only be used for the cooling of the PVC coil 7, but also provide cooling air for the working area where the open mill is located, so as to improve the production operation environment of production personnel.

[0067] Such as Figure 1 、 Figure 3 and Figure 7As shown, in a preferred embodiment of the present utility model, the width-fixed cutting device for the PVC coil further includes a first tensioning roller 2; a plurality of first tensioning rollers 2 are provided and are rotatably arranged on the frame 1 at the same time. The first tensioning roller 2 is used to tension the cut PVC coil 7 so that the cooling air duct 3 can be located above and below the cut PVC coil 7 to cool the front and back surfaces of the cut PVC coil 7. Therefore, the air outlet range of the cooling air duct 3 can be reduced compared with the cooling of the uncut PVC coil 7.

[0068] It can be understood that the moving power of the PVC coil 7 on the width-fixed cutting device comes from the winding assembly.

[0069] As Figure 1 and Figure 2 As shown, in a preferred embodiment of the present utility model, a plurality of air outlet holes 31 are formed in the cooling air duct 3 along the length direction of the cooling air duct 3; the air outlet holes 31 face the front and back surfaces of the PVC coil 7. The air outlet holes 31 can play a role in equalizing the air flow, enabling the surface of the PVC coil 7 to be evenly cooled, which helps to solve the adhesion problem that easily occurs during the winding of the PVC film.

[0070] As Figure 3 and Figure 6 As shown, in a preferred embodiment of the present utility model, the air delivery duct includes an air delivery branch pipe 41 and an air delivery main pipe 42. Two air delivery branch pipes 41 are provided and are detachably connected to the two cooling air ducts 3 respectively, thus facilitating the maintenance of the cooling air ducts 3. The air delivery main pipe 42 is connected to the heat exchanger 5 and the two air delivery branch pipes 41, and a detachable filter screen 8 is provided on the air delivery main pipe 42. The filter screen 8 is used to filter impurities in the cooling air to prevent the impurities from blowing onto the surface of the PVC coil 7, so that the quality of the PVC coil 7, especially the transparent PVC film, will not be affected.

[0071] As Figure 7 and Figure 8 As shown, in a preferred embodiment of the present utility model, the width-fixed cutting device for the PVC coil further includes a second tensioning roller 9, a traction roller group 10 and a guiding roller group.

[0072] Among them, the second tensioning roller 9 is rotatably arranged on the frame 1 and is located at the input end of the fixed-width cutting device. The traction roller group 10 is rotatably arranged on the frame 1 and is located below the cutter assembly 14. The traction roller group 10 includes a plurality of traction rollers with the same height. During actual production, the input end of the fixed-width cutting device faces the cooling assembly for the production of the PVC coil 7. Therefore, the PVC coil 7 cooled by the cooling assembly can bypass below the second tensioning roller 9. At this time, the second tensioning roller 9 is used to tension the PVC coil 7 to be pulled below the cutter assembly 14, and the traction roller group 10 plays the role of pulling and supporting the PVC coil 7, enabling the PVC coil 7 to be cut by the cutter assembly 14.

[0073] Among them, the guiding roller group is rotatably arranged on the frame 1 and is located below the traction roller group 10 and the second tensioning roller 9. The guiding roller group includes a first guiding roller 11 and a plurality of second guiding rollers 12. The length direction of the first guiding roller 11 is parallel to the width direction of the PVC coil 7. After the PVC coil 7 is cut to a fixed width, PVC coil 7 edge materials will be generated on both sides of the PVC coil 7. In order to recycle the PVC coil 7 edge materials, the first guiding roller 11 is provided, and the first guiding roller 11 is used to pull the PVC coil 7 edge materials generated on the traction roller group 10 from the lower side in front of the traction roller group 10 to the second guiding roller 12.

[0074] The second guiding roller 12 is perpendicular to the first guiding roller 11 group in the horizontal direction. Therefore, the cut PVC coil 7 edge materials can be guided out of the fixed-width cutting device by the rotating second guiding roller 12.

[0075] It should be noted that the first guiding roller 11 and the second guiding roller 12 need to be used in cooperation with an existing edge material recycling mechanism, so as to ensure the recycling and reuse of the PVC coil 7, such as the edge material recycling mechanism disclosed in the patent with the publication number CN209289418U.

[0076] In order to always guide the PVC coil 7 edge materials through the second guiding roller 12, limiting plates 13 are provided at both ends of the second guiding roller 12, so that the PVC coil 7 can always pass through the second guiding roller 12.

[0077] As Figure 1 、 Figure 3 and Figure 4 shown, in a preferred embodiment of the present invention, the cutter assembly 14 includes a gantry 141, a cylinder 142, a first lead screw 143, a second lead screw 144, a movable seat 145 and a cutter mechanism 146.

[0078] Among them, the gantry 141 is arranged on the frame 1. Both ends of the cylinder 142 are respectively connected to the gantry 141, and the length direction of the cylinder 142 is consistent with the width direction of the PVC coil 7. Further, a first cavity 1421 and a second cavity 1422 are formed inside the cylinder 142 along its length direction, and openings 1423 communicating with the first cavity 1421 and the second cavity 1422 are provided on the cylinder wall of the cylinder 142.

[0079] Among them, the first lead screw 143 is rotatably arranged in the first cavity 1421 along the axial direction of the cylinder 142, and one end of the first lead screw 143 extends out of the gantry 141. The second lead screw 144 is rotatably arranged in the second cavity 1422, and one end of the second lead screw 144 extends out of the gantry 141. Further, the outer ends of the second lead screw 144 and the first lead screw 143 are respectively located on both sides of the gantry 141, so that production personnel can rotate the first lead screw 143 and the second lead screw 144 through the second handwheel 16.

[0080] Among them, two movable seats 145 are provided, and the two movable seats 145 are respectively sleeved on the first lead screw 143 and the second lead screw 144, and the movable seats 145 are respectively movably connected to the cavity walls of the first cavity 1421 and the second cavity 1422; the cutter mechanism 146 is used for cutting the PVC coil 7 and is connected to the movable seat 145, and the arrangement of the foregoing openings 1423 ensures that the cutter mechanism 146 can be connected to the movable seat 145.

[0081] When production personnel rotate the first lead screw 143 and the second lead screw 144, the movable seats 145 can move in the first cavity 1421 and the second cavity 1422 respectively, thereby driving the two cutter mechanisms 146, so that the distance between the cutter mechanisms 146 can be adjusted to meet the cutting requirements of different widths of the PVC coil 7. It can be seen that the arrangement of the two independent cavities (i.e., the first cavity 1421 and the second cavity 1422) on the cylinder 142 enables the position of the cutter mechanism 146 on the cylinder 142 to be independently adjusted.

[0082] As Figure 3 and Figure 4 shown, in a preferred embodiment of the present invention, the cutter mechanism 146 includes an annular member 1461 and a tool holder 1462. The shape of the annular member 1461 is adapted to the outer shape of the cylinder 142, so that it can be movably sleeved on the cylinder 142. The outer side of the annular member 1461 is connected to the tool holder 1462 equipped with a cutter, and at the same time, the inner side of the annular member 1461 is connected to the movable seat 145. When the movable seat 145 moves, the cutter mechanism 146 can also move together with the movable seat 145, thereby realizing the adjustment of the distance between the cutters.

[0083] As Figure 3 andFigure 5 As shown, in a preferred embodiment of the present invention, both ends of the cylinder body 142 are rotatably connected to the gantry 141; the cutter assembly 14 further includes a gear 147, a worm 148, and a first handwheel 15. The gear 147 is fixedly sleeved on the cylinder body 142; the worm 148 is rotatably arranged on the gantry 141, and the worm 148 meshes with the gear 147; the first handwheel 15 is connected to the end of the worm 148, and the worm 148 can be rotated by the first handwheel 15; and since the worm 148 meshes with the gear 147, when the worm 148 rotates, the gear 147 can rotate and drive the cylinder body 142, so that the angle of the cutter mechanism 146 can be adjusted.

[0084] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention under the inventive concept of the present invention, or any direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A fixed-width cutting device for PVC coils, comprising a frame and a cutting knife assembly arranged on the frame; characterized in that: Also includes: There are two cooling air ducts, which are arranged on the frame at the same time. The length direction of the cooling air duct is parallel to the width direction of the PVC coil. The air delivery pipe is connected to two cooling air ducts at the same time. A heat exchanger, wherein the heat exchanger is connected to the air supply pipe, An induced draft fan connected to the heat exchanger; The cooling air duct is used to blow cooling air to the front and back of the PVC coil respectively.

2. The fixed-width cutting device for PVC coiled material according to claim 1, characterized in that: It also includes a first tensioning roller; there are multiple first tensioning rollers, which are rotatably arranged on the frame at the same time, and the first tensioning roller is used to tension the cut PVC coil; the cooling air ducts are respectively located above and below the cut PVC coil.

3. The fixed width cutting device for PVC coiled material according to claim 1, characterized in that: The cooling air duct is provided with a plurality of air outlet holes along the length direction of the cooling air duct; the air outlet holes face the front and back sides of the PVC coiled material.

4. The fixed-width cutting device for PVC coiled material according to claim 1, characterized in that: The air delivery pipe comprises: An air delivery branch pipe, wherein two air delivery branch pipes are provided and are detachably connected to two cooling air ducts respectively; The main air supply pipe is connected with the heat exchanger and the two branch air supply pipes, and a detachable filter screen is arranged on the main air supply pipe.

5. The fixed-width cutting device for PVC coiled material according to claim 1, characterized in that: Also includes: a second tensioning roller, which is rotatably mounted on the frame and is located at the input end of the fixed-width cutting device, A traction roller assembly is rotatably mounted on the frame and is located below the cutter assembly. A guide roller group, which is rotatably arranged on the frame and is located below the traction roller group and the second tensioning roller; Among them, the second tensioning roller is used to tension the PVC coil to be pulled under the cutter assembly, the traction roller group is used to pull and support the PVC coil, and the guide roller group is used to guide the cut PVC coil edge material out of the fixed-width cutting device.

6. The fixed width cutting device for PVC coiled material according to claim 1, characterized in that: The cutter assembly comprises: A gantry, wherein the gantry is arranged on the frame; A cylinder, wherein both ends of the cylinder are connected to the door frame respectively, and the length direction of the cylinder is consistent with the width direction of the PVC coil, the cylinder is provided with a first cavity and a second cavity along its length direction, and an opening communicating with the first cavity and the second cavity is provided on the cylinder wall; A first screw rod, which is rotatably disposed in the first cavity along the axial direction of the cylinder, and one end of the first screw rod extends outwardly out of the door frame; A second screw rod, the second screw rod is rotatably disposed in the second cavity, and one end of the second screw rod extends out of the door frame, and the outer end of the second screw rod and the outer end of the first screw rod are respectively located on two sides of the door frame; A movable seat, wherein two movable seats are provided, and the two movable seats are respectively sleeved on the first screw rod and the second screw rod, and the movable seats are movably connected to the cavity wall of the first cavity and the cavity wall of the second cavity respectively; A cutter mechanism is connected to the movable seat.

7. The fixed-width cutting device for PVC coiled material according to claim 6, characterized in that: The cutter mechanism comprises: An annular member, the annular member is movably sleeved on the cylinder, and the inner side of the annular member is connected to the movable seat; A knife seat is connected to the outer side of the annular component.

8. The fixed-width cutting device for PVC coiled material according to claim 7, characterized in that: The two ends of the cylinder are rotatably connected to the door frame; the cutter assembly also includes: A gear, wherein the gear is fixedly sleeved on the cylinder; A worm, the worm is rotatably mounted on the gantry and meshes with the gear; A first hand wheel is connected to an end of the worm.

9. The fixed-width cutting device for PVC coiled material according to claim 6, characterized in that: It also includes two second hand wheels, which are respectively arranged at the outer end of the first screw rod and the outer end of the second screw rod.

10. The fixed-width cutting device for PVC coiled material according to claim 1, characterized in that: The PVC coiled material is a PVC film.

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