Adjustable cutting device for film rewinding machine

Abstract

The utility model relates to the technical field of film rewinding machines, and discloses an adjustable cutting device for a film rewinding machine, which is characterized in that a driving motor is arranged to independently drive a cutting knife roll, so that very narrow materials can be accurately cut, the cutting precision is improved, and the types and the width range of the materials which can be processed by equipment are expanded; the cutting knife roller is independently driven, so that the speed of the cutting knife roller is adjustable; and the cutting knife roll is controlled by the independent driving motor, and the rotating speed of the cutting knife roll can be adjusted as required, so that an operator can flexibly adjust the cutting speed according to different material characteristics and production requirements, and the optimal cutting effect is achieved. The angle adjusting brake assembly and the mounting assembly are cooperatively matched, so that accurate matching between the blade and the blade groove is ensured, the phenomenon of deviation or jumping possibly occurring in the cutting process is reduced, a cut surface can be ensured to be smooth and flat during high-speed operation, and the condition of generating dust is also avoided in the cutting process.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of film rewinding machine, specifically adjustable cutting device for film rewinding machine. BACKGROUND

[0002] The cutting device of the film rewinding machine is a device installed on the film rewinding machine to cut the film material.

[0003] The existing cutting device of the film rewinding machine still has the following problems when cutting: the commonly used cutting mode is to drive the upper cutter shaft equipped with a disc cutter to cut through the lower cutter shaft gear transmission. However, this cutting method exposes several situations when processing lithium battery related film materials. Due to the limitation of the disc cutter and the lower cutter shaft gear transmission, the edges of the cut film material often have wavy edges, burrs and dust. These situations not only affect the flatness and adhesion of the film material, but also the burrs may pierce other components during the assembly of the lithium battery, causing safety hazards. At the same time, the dust generated will mix into the battery, interfering with the electrochemical reaction, thereby reducing the battery performance and service life.

[0004] Therefore, there is an urgent need for an adjustable cutting device for a film rewinding machine to solve the above problems. SUMMARY

[0005] Based on the above, the purpose of the utility model is to provide an adjustable cutting device for a film rewinding machine to solve the cutting problem of the film rewinding machine.

[0006] In order to solve the above technical problems, the utility model adopts the following technical scheme: an adjustable cutting device for a film rewinding machine, comprising a mounting frame and a cooperating cutter roll, a mounting plate and a cutting cutter roll mounted on the mounting frame, wherein:

[0007] The cooperating cutter roll comprises a roller body and a cutter groove, the roller body is rotatably arranged in the mounting frame, and the cutter groove is opened on the axial surface of the cooperating cutter roll;

[0008] One end of the mounting plate is rotatably arranged in the mounting frame through an angle brake assembly, and the mounting plate rotates along the direction perpendicular to the roller body with one end connected to the mounting frame as the rotation base point;

[0009] The cutting cutter roll comprises a rotating roller and a blade, the rotating roller is rotatably arranged at the other end of the mounting plate, the axis of the rotating roller is parallel to the axis of the roller body, and the rotating roller is adjusted in speed relative to the roller body through a driving motor, the blade is arranged on the axial surface of the rotating roller, and the blade is engaged with the cutter groove when the rotating roller rotates;

[0010] The angle-adjusting brake assembly is used to adjust and position the rotation angle of the mounting plate relative to the roller body, so that the angle-adjusting brake assembly adjusts and positions the rotation angle of the roller body to drive the cutting blade to move towards the cutting groove.

[0011] As a preferred solution of the adjustable cutting device for the film rewinding machine, the angle-adjusting brake assembly comprises a worm, a connecting rod and a worm gear, the worm is rotatably arranged on the mounting frame, the axis of the worm is perpendicular to the axis of the roller, the connecting rod is rotatably arranged on the mounting plate, the connecting rod passes through the mounting frame from the mounting plate, the axis of the connecting rod is parallel to the axis of the roller, and the worm gear is sleeved on the connecting rod and engaged with the worm.

[0012] As a preferred solution of the adjustable cutting device for the film rewinding machine, the angle-adjusting brake assembly further comprises a connecting assembly, which is sleeved on the connecting rod, the roller and the driving motor, and is used to ensure the synchronous rotation of the connecting rod, the roller and the driving motor.

[0013] As a preferred solution of the adjustable cutting device for the film rewinding machine, the connecting assembly comprises a main gear, an intermediate gear and a secondary gear, the roller is provided with a gear, the main gear is sleeved on the driving end of the driving motor, the intermediate gear is sleeved on the connecting rod, and the secondary gear is sleeved on the roller, the main gear, the intermediate gear and the secondary gear are engaged with each other.

[0014] As a preferred solution of the adjustable cutting device for the film rewinding machine, the angle-adjusting brake assembly further comprises an auxiliary roller, which is rotatably arranged on the mounting frame and has an axis parallel to the axis of the roller body, and is used to assist the stable transmission of the film material.

[0015] As a preferred solution of the adjustable cutting device for the film rewinding machine, the mounting plate comprises a plate body, a matching port, a mounting port, a lower half clamping port and a clamping plate, the plate body is arranged on the mounting frame, the matching port is arranged at the side end of the plate body, and the driving end of the driving motor passes through the matching port; the mounting port is arranged at the bottom end of the plate body, and the connecting rod passes through the mounting port; the lower half clamping port is arranged at the top end of the plate body, the clamping plate is arranged at the top end of the plate body, one end of the clamping plate is rotatably connected with the plate body, the other end of the clamping plate is provided with a step, a fastener is arranged on the other end of the clamping plate and sequentially clamped in the step and fixed to the plate body, and the bottom of the clamping plate is provided with an upper half clamping port matched with the lower half clamping port, the lower half clamping port and the upper half clamping port form a clamping port, and the roller passes through the clamping port.

[0016] As a kind of adjustable cutting device for film rewinding machine, the bottom end of the plate body is provided with an adjusting port, the adjusting port penetrates the mounting port, and the adjusting port extends away from the plate body.

[0017] As a kind of adjustable cutting device for film rewinding machine, further comprising a mounting assembly connected between the worm and the mounting frame, the mounting assembly is used to stably support the worm, so that the worm maintains axial position in the mounting frame.

[0018] As a kind of adjustable cutting device for film rewinding machine, the mounting assembly comprises a positioning seat, a mounting seat and a hand wheel, the positioning seat and the mounting seat are both mounted on the mounting frame, the worm gear is arranged in the mounting seat, and the rotating roller is connected with the worm gear in the mounting seat through the mounting frame, the worm passes through the positioning seat and engages with the worm gear in the mounting seat, and the hand wheel is positioned on the worm.

[0019] As a kind of adjustable cutting device for film rewinding machine, the rotating roller is sleeved with a limiting sleeve and a positioning pad, the limiting sleeve and the positioning pad are both positioned on the rotating roller, the limiting sleeve is arranged at both ends of the positioning pad relative to the rotating roller, and the blade and the positioning pad are sleeved on the rotating roller.

[0020] The beneficial effects of the utility model are as follows: the driving motor is arranged to drive the cutting knife roller separately, the precise cutting of very narrow materials can be realized, the cutting precision is improved, the types and width range of materials that can be processed by the equipment are expanded, the cutting knife roller is independently driven, the speed of the cutting knife roller is adjustable, the speed of the cutting knife roller is controlled by the independent driving motor, the speed can be adjusted according to needs, the operator can flexibly adjust the cutting speed according to different material properties and production needs, and the best cutting effect is achieved. The angle-adjusting brake assembly cooperates with the mounting assembly to ensure that the blade and the blade groove are accurately matched, the deviation or jumping phenomenon that may occur in the cutting process is reduced, the cutting surface is smooth and flat when running at high speed, the generation of dust is avoided in the cutting process, and the quality and safety of the final product are improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 A first-direction overall structure schematic view of an adjustable cutting device for film rewinding machine is provided in the utility model.

[0022] Figure 2 A second-direction overall structure schematic view of an adjustable cutting device for film rewinding machine is provided in the utility model.

[0023] Figure 3The utility model provides a kind of for the overall structure schematic diagram of dismantling mounting rack in adjustable cutting device of film rewinding machine provided by the utility model.

[0024] Figure 4 The utility model provides a kind of for the overall structure schematic diagram of dismantling mounting rack in adjustable cutting device of film rewinding machine provided by the utility model;

[0025] Figure 5 The utility model provides a kind of for the overall structure schematic diagram of cutting knife roll in adjustable cutting device of film rewinding machine provided by the utility model;

[0026] Figure 6 The utility model provides a kind of for the overall structure schematic diagram of mounting plate in adjustable cutting device of film rewinding machine provided by the utility model.

[0027] Wherein, the reference numeral in drawing:

[0028] 1, mounting rack;

[0029] 2, cutting knife roll;201, rotating roller;202, blade;203, limit sleeve;204, positioning pad;

[0030] 3, cooperation knife roll;301, roller body;302, knife groove;

[0031] 4, connecting assembly;401, main gear;402, intermediate gear;403, auxiliary gear;

[0032] 5, angle adjusting brake assembly;501, worm;502, connecting rod;

[0033] 6, mounting assembly;601, positioning seat;602, mounting seat;603, hand wheel;

[0034] 7, mounting plate;701, plate body;702, cooperation mouth;703, mounting mouth;704, lower half clamping mouth;705, upper half clamping mouth;706, clamping mouth;707, clamping plate;708, adjusting mouth;

[0035] 8, auxiliary roller;9, driving motor. DETAILED DESCRIPTION

[0036] The utility model will be further explained in detail in connection with the drawings and embodiment.It can be understood that the specific embodiment described here is only used to explain the utility model, and is not limited to the utility model.In addition, it needs to be explained that, for the convenience of description, only part related to the utility model is shown in the drawing, not all structures.

[0037] In the description of the utility model, unless another definite provision and limit, the term "link", "connect", "fix" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can pass through the indirect connection of intermediate medium, can be the communication of two elements inside or the interaction of two elements.For the ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0038] In the utility model, unless another definite provision and limit, the first feature is "on" or "under" the second feature can include the direct contact of the first and second features, also can include the contact of the first and second features not direct contact but through the contact between other features between them.Moreover, the first feature is "on", "above" and "on" the second feature includes the first feature is directly above and obliquely above the second feature, or just indicates that the horizontal height of the first feature is higher than the second feature.The first feature is "under", "below" and "under" the second feature includes the first feature is directly below and obliquely below the second feature, or just indicates that the horizontal height of the first feature is less than the second feature.

[0039] In the description of the embodiment, the orientation or position relationship of the terms "on", "under", "left", "right" and the like is based on the orientation or position relationship shown in the drawing, only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model.

[0040] In the description of the utility model, unless otherwise stated, the meaning of "a plurality of" is two or more than two.In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0041] In one embodiment of the utility model, as Figures 1-6As shown, provide a adjustable cutting device for film rewinder, including mounting bracket 1 and mounting bracket 1 and matching knife roll 3, mounting plate 7 and cutting knife roll 2, wherein: matching knife roll 3, including roll body 301 and knife groove 302, roll body 301 is rotatably arranged in mounting bracket 1, knife groove 302 is opened in the axial surface of matching knife roll 3; One end of mounting plate 7 is rotatably arranged in mounting bracket 1 through angle brake assembly 5, and the other end of mounting plate 7 is rotatably arranged in mounting bracket 1; Cutting knife roll 2 includes rotating roller 201 and blade 202, rotating roller 201 is rotatably arranged at the other end of mounting plate 7, the axis of rotating roller 201 is parallel to the axis of roll body 301, and the rotating speed of rotating roller 201 is adjusted by driving motor 9 relative to roll body 301, blade 202 is arranged on the axial surface of rotating roller 201, and blade 202 is engaged with knife groove 302 when rotating roller 201 rotates; Angle brake assembly 5 is used for adjusting and positioning the rotation angle of mounting plate 7 relative to roll body 301, so that angle brake assembly 5 adjusts and positions the feed angle of blade 202 towards knife groove 302 driven by roll body 301.

[0042] The adjustable cutting device for film rewinder provided by the utility model, by setting driving motor 9 to drive cutting knife roll 2 alone, precise cutting of very narrow materials can be realized, the cutting precision is improved, and the material types and width range that can be processed by the equipment are expanded; moreover, cutting knife roll 2 is driven independently, so that the speed of cutting knife roll 2 is adjustable; moreover, cutting knife roll 2 is controlled by independent driving motor 9, and the rotating speed can be adjusted according to requirements, so that the operator can flexibly adjust the cutting speed according to different material properties and production requirements, thereby achieving the best cutting effect. The cooperation of angle brake assembly 5 and mounting assembly 6 ensures the accurate engagement between blade 202 and knife groove 302, reduces the deviation or bouncing phenomenon that may occur in the cutting process, ensures smooth and flat cutting surface during high-speed operation, avoids dust generation during the cutting process, and further improves the quality and safety of the final product.

[0043] In the embodiment, blade 202 can be made of a circular knife, and bearings can be installed at the rotating position to increase the rotating flexibility.

[0044] Preferably, a limiting sleeve 203 and a positioning pad 204 are sleeved on rotating roller 201, the limiting sleeve 203 and the positioning pad 204 are positioned on rotating roller 201, the limiting sleeve 203 is arranged at both ends of the positioning pad 204 relative to rotating roller 201, and blade 202 and positioning pad 204 are sleeved on rotating roller 201.

[0045] In the installation of the blade 202, the positioning pad 204 is first tightly sleeved on the rotating roller 201 to ensure its accurate position. The positioning pad 204 provides an accurate installation reference for the blade 202 to ensure the axial position accuracy of the blade 202 after installation. Then, the blade 202 is sleeved on the rotating roller 201 at intervals, so that the blade 202 maintains a specific distance from the positioning pad 204. The distance is determined according to the actual cutting process requirements to achieve the best cutting effect. Then, the limiting sleeve 203 is sleeved on both ends of the positioning pad 204, and the limiting sleeve 203 is fixed on the rotating roller 201 by fastening means such as threaded connection, clamp fixing, etc. The limiting sleeve 203 can effectively prevent the blade 202 from moving axially during high-speed rotation of the rotating roller 201, thereby ensuring the stability of the blade 202 installation.

[0046] The adjustable cutting device for the film rewinding machine further comprises a connecting assembly 4 sleeved on the connecting rod 502, the rotating roller 201 and the driving motor 9, which is used to ensure the synchronous rotation of the connecting rod 502, the rotating roller 201 and the driving motor 9.

[0047] Specifically, the connecting assembly 4 comprises a main gear 401, an intermediate gear 402 and a secondary gear 403. The rotating roller 201 is provided with a gear. The main gear 401 is sleeved on the driving end of the driving motor 9. The intermediate gear 402 is sleeved on the connecting rod 502. The secondary gear 403 is sleeved on the rotating roller 201. The main gear 401, the intermediate gear 402 and the secondary gear 403 are in mesh with each other.

[0048] The meshing of the main gear 401, the intermediate gear 402 and the secondary gear 403 ensures the synchronous rotation of the connecting rod 502, the rotating roller 201 and the driving motor 9, so that the speed adjustment of the cutting knife roller 2 and the angle adjustment of the mounting plate 7 can be coordinated, thereby improving the cutting precision and stability of the cutting device of the film rewinding machine. Further, the meshing of the main gear 401, the intermediate gear 402 and the secondary gear 403 can keep synchronous rotation, avoiding cutting deviation caused by inconsistent speed, and ensuring that the blade 202 can accurately fit the blade groove 302 during the feed process.

[0049] Specifically, the angle-adjusting brake assembly 5 comprises a worm 501, a connecting rod 502 and a worm gear. The worm 501 is rotatably arranged on the mounting frame 1, and the axis of the worm 501 is perpendicular to the axis of the rotating roller 201. The connecting rod 502 is rotatably arranged on the mounting plate 7, and the connecting rod 502 passes through the mounting frame 1 from the mounting plate 7. The axis of the connecting rod 502 is parallel to the axis of the rotating roller 201. The worm gear is sleeved on the connecting rod 502, and the worm gear is in mesh with the worm 501.

[0050] In the present embodiment, through the precise matching of the worm 501 and the worm gear, the fine adjustment of the rotation angle of the mounting plate 7 relative to the axis of the rotating roller 201 is realized. This allows the operator to adjust the position of the cutting knife roller 2 relative to the matching knife roller 3 with high precision, thereby ensuring that each cutting can achieve the best effect. Moreover, the worm 501 and worm gear mechanism has self-locking characteristics, and after being adjusted to the required position, it can firmly maintain the position of the mounting plate 7 unchanged, avoiding unnecessary displacement even when running at high speed or processing harder film material. This ensures the stability of the cutting process and improves the quality consistency of the final product.

[0051] The adjustable cutting device for the film rewinding machine further comprises a mounting assembly 6 connected between the worm 501 and the mounting frame 1, which is used to stably support the worm 501 and keep the axial position of the worm 501 in the mounting frame 1.

[0052] Specifically, the mounting assembly 6 comprises a positioning seat 601, a mounting seat 602 and a hand wheel 603. In the present embodiment, the positioning seat 601 can be made of a bearing seat. The positioning seat 601 and the mounting seat 602 are both mounted on the mounting frame 1, the worm gear is arranged in the mounting seat 602, and the rotating roller 201 passes through the mounting frame 1 and is connected with the worm gear in the mounting seat 602. The worm 501 passes through the positioning seat 601 and is engaged with the worm gear in the mounting seat 602, and the hand wheel 603 is positioned on the worm 501.

[0053] In the present embodiment, the positioning seat 601 and the mounting seat 602 are used to support the worm 501 and ensure that the axial position of the worm 501 in the mounting frame 1 is stable and unchanged, thereby improving the stability of the angle-adjusting brake. This effectively prevents any displacement or deflection of the worm 501 that may occur during operation, thereby ensuring the accuracy and reliability of the angle adjustment. By providing the hand wheel 603, the operator can more conveniently perform the rotation operation of the worm 501, thereby realizing the fine adjustment of the angle of the cutting knife roller 2.

[0054] Specifically, the mounting plate 7 comprises a plate body 701, a matching port 702, a mounting port 703, a lower half clamping port 704, and a clamping plate 707. The plate body 701 is arranged on the mounting frame 1. The matching port 702 is arranged at the side end of the plate body 701, and the driving end of the driving motor 9 is arranged in the matching port 702. The mounting port 703 is arranged at the bottom end of the plate body 701, and the connecting rod 502 is arranged in the mounting port 703. The lower half clamping port 704 is arranged at the top end of the plate body 701. The clamping plate 707 is arranged at the top end of the plate body 701. One end of the clamping plate 707 is rotatably connected with the plate body 701. The other end of the clamping plate 707 is provided with a step. The other end of the clamping plate 707 is provided with a fastener which is sequentially clamped in the step and fixed to the plate body 701. The bottom of the clamping plate 707 is provided with an upper half clamping port 705 which is matched with the lower half clamping port 704. The lower half clamping port 704 and the upper half clamping port 705 form a clamping port 706. The rotating roller 201 is arranged in the clamping port 706.

[0055] In the embodiment, the clamping port 706 formed by the combination of the lower half clamping port 704 and the upper half clamping port 705 can stably clamp the rotating roller 201, ensuring that it will not deviate or shake during high-speed operation, thereby improving the precision and consistency of the cutting process. One end of the clamping plate 707 is rotatably connected with the plate body 701, and the other end is fixed by the fastener. This not only simplifies the opening and closing operation of the clamping plate 707, but also facilitates quick adjustment or replacement of the rotating roller 201.

[0056] Further, the bottom end of the plate body 701 is provided with an adjusting port 708 which penetrates the mounting port 703 and extends away from the plate body 701. By rotating the screw, the connecting rod 502 arranged in the mounting port 703 can be tightened. The design of the adjusting port 708 extending away from the plate body 701 allows the operator to make subtle adjustments by rotating the screw to compensate for possible wear or position deviation. This fine-tuning mechanism is not only easy to operate, but also can achieve very fine position correction, which helps to maintain long-term cutting quality consistency.

[0057] The adjustable cutting device for the film rewinding machine further comprises an auxiliary roller 8 which is rotatably arranged on the mounting frame 1. The axis of the auxiliary roller 8 is parallel to the axis of the roller body 301. The auxiliary roller 8 is used to assist the stable transmission of the film material. The auxiliary roller 8 is arranged in parallel with the matching knife roller 3 and is rotatably arranged on the mounting frame 1, which can effectively guide and stabilize the film material after entering the cutting and winding.

[0058] The process of adjusting the cutting-in angle in the embodiment is as follows: when the cutting-in angle needs to be adjusted, the hand wheel 603 drives the worm 501 to rotate, the worm 501 and the worm gear sleeved on the connecting rod 502 are engaged with each other, the worm 501 drives the worm gear, and the worm gear drives the connecting rod 502 to rotate. The connecting rod 502 is rotatably arranged on the mounting plate 7 and passes through the mounting frame 1, the connecting rod 502 drives the mounting plate 7 to rotate along the direction perpendicular to the roller body 301 with the end connected with the mounting frame 1 as a rotating base point, and the cutting-in angle of the cutting knife roller 2 is adjusted.

[0059] The process of adjusting the cutting-in speed in the embodiment is as follows: when the cutting-in speed needs to be adjusted, the driving motor 9 works. The driving motor 9 independently controls the rotating speed of the rotating roller 201 of the cutting knife roller 2, the operator adjusts the rotating speed of the rotating roller 201 by controlling the output power or frequency of the driving motor 9 according to the material, thickness and other characteristics of the film material and production requirements.

[0060] The above is only the preferred embodiment of the present application, and does not limit the present application in any form. Although the present application is disclosed in the preferred embodiment, it is not intended to limit the present application. Any skilled person in the art can make some changes or modifications to the above disclosed technical content without departing from the scope of the present application, and any simple modification, equivalent change and modification of the above embodiment within the scope of the present application are all within the scope of the present application.

Claims

1. An adjustable cutting device for a film rewinder, characterized in that, The installation frame and the matching cutter roller, the installation plate and the cutting cutter roller are installed on the installation frame, wherein: The matching cutter roller comprises a roller body and a cutter groove, the roller body is rotatably arranged in the installation frame, and the cutter groove is arranged on the axial surface of the matching cutter roller; One end of the installation plate is rotatably arranged in the installation frame through the angle adjusting brake assembly, and the installation plate rotates along the direction perpendicular to the roller body with one end connected to the installation frame as the rotation base point; The cutting cutter roller comprises a rotating roller and a cutter blade, the rotating roller is rotatably arranged at the other end of the installation plate, the axis of the rotating roller is parallel to the axis of the roller body, the rotating speed of the rotating roller is adjusted by the driving motor relative to the roller body, the cutter blade is arranged on the axial surface of the rotating roller, and the cutter blade is engaged with the cutter groove when the rotating roller rotates; The angle adjusting brake assembly is used for adjusting and positioning the rotation angle of the installation plate relative to the roller body, so that the angle adjusting brake assembly adjusts and positions the rotation angle of the roller body to drive the cutter blade to approach the cutter groove.

2. An adjustable cutting device for a film rewinding machine according to claim 1, characterized in that, The angle adjusting brake assembly comprises a worm, a connecting rod and a worm wheel, the worm is rotatably arranged in the installation frame, the axis of the worm is perpendicular to the axis of the rotating roller, the connecting rod is rotatably arranged on the installation plate, the connecting rod passes through the installation frame from the installation plate, the axis of the connecting rod is parallel to the axis of the rotating roller, and the worm wheel is sleeved on the connecting rod and engaged with the worm.

3. An adjustable cutting device for a film rewinding machine according to claim 2, characterized in that, A connecting assembly is further arranged on the connecting rod, the rotating roller and the driving motor, and the connecting assembly is used for ensuring the synchronous rotation of the connecting rod, the rotating roller and the driving motor.

4. An adjustable cutting device for a film rewinding machine according to claim 3, characterized in that, The connecting assembly comprises a main gear, an intermediate gear and a secondary gear, the rotating roller is provided with a gear, the main gear is sleeved on the driving end of the driving motor, the intermediate gear is sleeved on the connecting rod, the secondary gear is sleeved on the rotating roller, and the main gear, the intermediate gear and the secondary gear are engaged with each other.

5. An adjustable cutting device for a film rewinding machine according to any one of claims 1-4, characterized in that, An auxiliary roller is further arranged on the installation frame, the axis of the auxiliary roller is parallel to the axis of the roller body, and the auxiliary roller is used for assisting the stable transmission of the film material.

6. An adjustable cutting device for a film rewinding machine according to any one of claims 2-4, characterized in that, The installation plate comprises a plate body, a matching port, an installation port, a lower half clamping port and a clamping plate, the plate body is arranged in the installation frame, the matching port is arranged on the side end of the plate body, the driving end of the driving motor passes through the matching port, the installation port is arranged on the bottom end of the plate body, the connecting rod passes through the installation port, the lower half clamping port is arranged on the top end of the plate body, the clamping plate is arranged on the top end of the plate body, one end of the clamping plate is rotatably connected to the plate body, the other end of the clamping plate is provided with a step, a fastener is arranged on the other end of the clamping plate, the fastener is sequentially clamped in the step and fixed to the plate body, the bottom of the clamping plate is provided with an upper half clamping port matched with the lower half clamping port, the lower half clamping port and the upper half clamping port form a clamping port, and the rotating roller passes through the clamping port.

7. An adjustable cutting device for a film rewinding machine according to claim 6, characterized in that, The bottom end of the plate body is provided with an adjusting port, the adjusting port penetrates the installation port, and the adjusting port extends away from the plate body.

8. An adjustable cutting device for a film rewinding machine according to any one of claims 2-4, characterized in that, Also included is a mounting assembly connected between the worm and the mounting bracket, the mounting assembly for securely supporting the worm to maintain axial positioning of the worm within the mounting bracket.

9. An adjustable cutting device for a film rewinding machine according to claim 8, characterized in that, The mounting assembly includes a positioning seat, a mounting seat and a hand wheel, the positioning seat and the mounting seat are both mounted to the mounting bracket, the worm gear is arranged in the mounting seat, and the rotating roller is connected with the worm gear in the mounting seat through the mounting bracket, the worm passes through the positioning seat and engages with the worm gear in the mounting seat, and the hand wheel is positioned on the worm.

10. An adjustable cutting device for a film rewinding machine according to any one of claims 1-4 or 7, characterized in that, A limiting sleeve and a positioning pad are sleeved on the rotating roller, the limiting sleeve and the positioning pad are both positioned on the rotating roller, the limiting sleeve is arranged at both ends of the positioning pad relative to the rotating roller, and the blade and the positioning pad are sleeved on the rotating roller.

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