A cutting device for lithium battery separator waste film roll

Abstract

The application relates to the technical field of production equipment of lithium battery diaphragm, in particular to a cutting device for a lithium battery diaphragm waste film roll, which comprises a mounting frame, a clamping assembly, a cutter assembly, a rotary driving assembly and a horizontal moving assembly. The clamping assembly is arranged on the mounting frame and is used for clamping the waste film roll so that the waste film roll is placed along a first direction. The cutter assembly is arranged on one side of the clamping assembly in a second direction. The cutter assembly comprises a cutter which is used for cutting into the waste film roll along the second direction, so as to cut off the waste film on the waste film roll and take out the roll core in the waste film roll. The rotary driving assembly is connected with the cutter and is used for driving the cutter to rotate around the axis of the cutter, so as to rotateally cut the waste film roll. The horizontal moving driving assembly is connected with the cutter and is used for driving the cutter to move along the first direction. The first direction is perpendicular to the second direction. The application can automatically cut off the waste film, improves the safety of operation and improves the work efficiency.

Description

Technical Field

[0001] This application relates to the field of thin film production technology, and more specifically to a cutting device for waste film rolls of lithium battery separators. Background Technology

[0002] High-precision thin films (hereinafter referred to as "films") are typically transported and used in rolls. Due to the fragile and non-contaminated nature of films, their surfaces must be undamaged and resistant to dust accumulation. Because the film requires high-speed rotation during unwinding and rewinding, the geometric accuracy of the roll core directly determines the dynamic balance stability of the roll. To prevent film layer shifting, wrinkling, or damage during high-speed operation, the roll core must possess extremely high geometric accuracy (coaxiality and roundness). Therefore, the manufacturing cost and value of high-precision film roll cores are high, and they should be reused as much as possible. When a roll is scrapped due to quality issues or other reasons, the film must be removed from the roll core, and the roll core recycled.

[0003] Currently, there are two ways to separate the diaphragm and core from the membrane roll. One is unwinding, which involves pulling the film off the core and winding it onto another large core roll. This method is time-consuming and inefficient. The other method is cutting, also known as membrane breaking, which involves using a cutter to cut the waste film on the membrane roll and peeling off the core. However, the core must not be damaged. This method also has the disadvantages of inconvenience and low efficiency, and there is a risk of accidentally cutting the operator. Utility Model Content

[0004] This application provides a cutting device for waste membrane rolls of lithium battery separators, which can at least partially solve or improve the above-mentioned technical problems.

[0005] This application provides a cutting device for waste membrane rolls of lithium battery separators, comprising:

[0006] Mounting rack;

[0007] A clamping assembly is disposed on the mounting frame for clamping the waste film roll so that the waste film roll is placed along a first direction;

[0008] A cutting assembly is disposed on one side of the clamping assembly in a second direction; the cutting assembly includes a cutter for cutting into the waste film roll in the second direction to remove the waste film on the waste film roll and take out the core inside the waste film roll;

[0009] A rotary drive assembly, connected to the cutter, for driving the cutter to rotate about its own axis to rotary cut the waste film roll; and

[0010] A horizontal movement drive assembly, connected to the cutter, is used to drive the cutter to move along the first direction;

[0011] Wherein, the first direction and the second direction are perpendicular to each other.

[0012] In some optional embodiments, the rotary drive assembly includes a rotary drive member and a rotary transmission member, with both ends of the rotary transmission member connected to the rotary drive member and the cutter, respectively; the rotary drive member drives the rotary transmission member to rotate, thereby causing the cutter to rotate.

[0013] In some optional embodiments, the rotary transmission component includes a first transmission wheel, a flexible transmission component, and a second transmission wheel. The first transmission wheel is disposed at the output end of the rotary drive component, the flexible transmission component is disposed between the first transmission wheel and the second transmission wheel, and the second transmission wheel is coaxially connected to the cutter.

[0014] In some alternative embodiments, the cutter assembly further includes a cutter shaft, one end of which is coaxially fixed to the cutter, and the other end of which is coaxially fixed to the second drive wheel.

[0015] In some optional embodiments, the horizontal movement drive assembly includes a horizontal movement drive member and a horizontal movement transmission member, the output end of the horizontal movement drive member is connected to the horizontal movement transmission member, the horizontal movement drive member drives the horizontal movement transmission member to move, and drives the cutter to move along the first direction.

[0016] In some optional embodiments, the horizontal movement transmission component includes a lead screw and a slider disposed on the lead screw. The lead screw is arranged along the first direction and one end is coaxially connected to the output end of the horizontal movement drive component. The slider is movably disposed on the lead screw and connected to the cutter, so that the rotational energy of the lead screw is converted into linear movement of the slider along the first direction, thereby driving the cutter to move synchronously.

[0017] In some alternative embodiments, the cutting device further includes a lifting assembly disposed on the mounting frame; the lifting assembly is connected to the clamping assembly and is used to drive the clamping assembly to move along the second direction.

[0018] In some optional embodiments, the clamping assembly includes an air shaft for insertion into the waste film roll to secure it; the air shaft is detachably connected to the mounting bracket.

[0019] In some alternative embodiments, one end of the air shaft is hinged to the mounting bracket, and the other end is snap-fitted to the mounting bracket.

[0020] In some alternative embodiments, at least two cutter assemblies are provided, and the at least two cutter assemblies are arranged sequentially along the first direction.

[0021] The cutting device for waste film rolls of lithium battery separators according to this embodiment includes a mounting frame, a clamping assembly, a cutting blade assembly, a rotary drive assembly, and a horizontal moving assembly. The clamping assembly clamps and fixes the waste film roll, preventing wobbling during cutting and resulting in cutting deviations. The rotary drive assembly drives the cutting blade of the cutting blade assembly to rotate around its own axis, cutting radially into and removing the waste film from the roll. This circular motion of the cutting blade effectively disperses the cutting force, preventing tearing or damage due to localized pulling, ensuring complete peeling of the waste film from the core surface, and reducing residual film fragments. Simultaneously, the horizontal moving assembly drives the cutting blade to move along a first direction, ensuring the cut covers the entire length of the waste film roll, completely peeling away the waste film to expose the core, thus enabling core recycling. The cutting blade assembly, rotary drive assembly, and horizontal moving assembly allow for automatic cutting of the waste film, improving operational safety and work efficiency. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a cutting device for waste membrane rolls of lithium battery separators at one angle in one embodiment.

[0023] Figure 2 This is a schematic diagram of the structure of a cutting device for waste membrane rolls of lithium battery separators from another angle in one embodiment.

[0024] Figure 3 This is a schematic diagram of the structure of a horizontal movement drive component in one embodiment;

[0025] Figure 4 This is a schematic diagram of the structure of a rotary drive component in one embodiment;

[0026] Figure 5 This is a schematic diagram of a portion of the structure of a cutting device for waste membrane rolls of lithium battery separators in one embodiment.

[0027] Wherein: 100, mounting frame; 110, first frame; 111, tray; 112, first fastening structure; 113, second fastening structure; 120, second frame;

[0028] 200. Clamping assembly; 210. Air shaft;

[0029] 300. Cutting blade assembly; 310. Cutting blade; 320. Blade holder; 330. Cutting blade shaft;

[0030] 400. Rotary drive assembly; 410. Rotary drive component; 420. Rotary transmission component; 421. First transmission wheel; 422. Flexible transmission component; 423. Second transmission wheel;

[0031] 500. Horizontal movement drive assembly; 510. Horizontal movement drive component; 520. Horizontal movement transmission component; 521. Lead screw; 522. Slider;

[0032] 600. Lifting assembly; 610. Drive handwheel; 620. Threaded rod; 630. Connecting part;

[0033] F1, First direction; F2, Second direction; A, Waste film roll. Detailed Implementation

[0034] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0035] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operational steps involved in each embodiment can also be rearranged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for clearly describing a particular embodiment and do not imply that they represent the necessary components and / or order.

[0036] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0037] This application provides a cutting device for waste film rolls of lithium battery separators, including a mounting frame, a clamping assembly, a cutting blade assembly, a rotary drive assembly, and a horizontal movement assembly. The clamping assembly clamps and fixes the waste film roll, preventing the roll from shaking and causing cutting deviations during the cutting process. The rotary drive assembly drives the cutting blade of the cutting blade assembly to rotate around its own axis, cutting radially into and removing the waste film from the interior of the roll. The cutting blade contacts the waste film in a circular motion, causing the instantaneous contact point between the cutting blade and the waste film to continuously change, significantly reducing the force per unit area and effectively dispersing the cutting force. This prevents the waste film from tearing or breaking due to localized pulling, ensuring that the waste film is completely peeled off from the core surface and reducing residual film fragments. Simultaneously, the horizontal movement assembly drives the cutting blade to move along a first direction to cover the entire length of the waste film roll, completely peeling off the waste film and exposing the core inside, thus achieving core recycling. The cutting blade assembly, rotary drive assembly, and horizontal movement assembly enable automatic cutting of the waste film, improving operational safety and work efficiency.

[0038] Please see Figures 1 to 5 The cutting device for waste membrane roll A of lithium battery separator (hereinafter referred to as the "cutting device") includes a mounting frame 100, a clamping assembly 200, a cutting assembly 300, a rotary drive assembly 400, and a horizontal movement drive assembly 500.

[0039] Mounting bracket 100 is the basic component of the entire cutting device, providing a mounting base for clamping assembly 200, cutting assembly 300, rotary drive assembly 400, and horizontal movement drive assembly 500. Mounting bracket 100 can be understood as an assembly of multiple components to support clamping assembly 200, cutting assembly 300, rotary drive assembly 400, and horizontal movement drive assembly 500 respectively.

[0040] Please see Figure 1 and Figure 2 The mounting frame 100 includes a first frame 110 and a second frame 120. The first frame 110 is used to mount the clamping assembly 200, and the second frame 120 is used to mount the cutter assembly 300, the rotary drive assembly 400, and the horizontal movement drive assembly 500. The second frame 120 can be a gantry structure, with the cutter assembly 300 suspended on the gantry structure and positioned on one side of the waste film roll A.

[0041] For ease of description of the cutting device of this application, two mutually perpendicular directions are defined, namely, a first direction F1 and a second direction F2, wherein the first direction F1 is... Figure 1 The horizontal direction, the second direction F2 is Figure 1 The vertical direction in the middle.

[0042] Furthermore, the waste membrane roll A has an axial direction and a radial direction. The axial direction is its length direction, which corresponds to the first direction F1 in the cutting device. The radial direction is the direction perpendicular to the axial direction and extends along the diameter of the waste membrane roll A.

[0043] The clamping assembly 200 is disposed on the mounting bracket 100 and is used to clamp the waste film roll A so that the waste film roll A is placed along the first direction F1, that is, the waste film roll A is placed along the first direction F1. Figure 1 It is placed horizontally in the horizontal direction.

[0044] Please see Figure 3 In some embodiments, the clamping assembly 200 includes an air shaft 210, which is inserted into the waste film roll A to fix the waste film roll A. The air shaft 210 is inflated to make its outer wall fit tightly against the inner wall of the waste film roll A, thereby fixing and positioning the waste film roll A. In practical applications, the waste film roll A is first placed on the deflated air shaft 210. After adjusting the position and angle, the air shaft 210 is inflated to make its outer wall fit tightly against the inner wall of the waste film roll A, thus fixing the waste film roll A. Based on this, the air shaft 210 can be selected with different inflation levels to accommodate waste film rolls A of different sizes (inner diameters), so that the cutting device can accommodate waste film rolls A of multiple sizes.

[0045] In some embodiments, the air shaft 210 is detachably connected to the mounting bracket 100. This allows for the replacement of air shafts 210 with different specifications (including outer diameter and length) to further enhance the adaptability of the cutting device and meet the usage requirements of different scenarios (including different lengths and inner diameters). For example, a six-inch air shaft 210 can be used to clamp and fix a six-inch waste film roll A, or a three-inch air shaft 210 can be switched to clamp and fix a three-inch waste film roll A.

[0046] In other embodiments, the clamping assembly 200 may further include clamping heads disposed at both ends of the waste film roll A, so as to fix the waste film roll A by means of the clamping heads. The distance between the two clamping heads can be adjusted so as to accommodate waste film rolls A of different lengths.

[0047] The cutter assembly 300 is one of the key components in the cutting device. The cutter assembly 300 includes a cutter 310, which is used to cut into the waste film roll A along the second direction F2 (or the radial direction of the waste film roll A) to remove the waste film on the waste film roll A and take out the core inside the waste film roll A.

[0048] In some embodiments, the cutter assembly 300 is disposed on one side of the clamping assembly 200 in the second direction F2, and is capable of cutting into the waste film roll A along the second direction F2. The cutter assembly 300 also includes a cutter holder 320, which is connected to the mounting bracket 100; the cutter 310 is disposed on the cutter holder 320. The cutter holder 320 can fix the cutter 310, and can also serve as a connection structure between the cutter 310 and the rotary drive assembly 400 and the horizontal movement drive assembly 500. That is, the rotary drive assembly 400 and the horizontal movement drive assembly 500 can be connected to the cutter holder 320 respectively, and the cutter 310 can be rotated or moved by driving the cutter holder 320 to rotate or move.

[0049] In some embodiments, the cutter 310 has a disc-shaped structure and the edge of the cutter 310 is provided with a cutting edge, so that when the cutter 310 rotates around its own axis, the cutting edge of the circumference of the cutter 310 can contact the waste film roll A, avoiding local excessive wear caused by prolonged stress on the local cutting edge.

[0050] In some embodiments, at least two cutter assemblies 300 are provided, and the at least two cutter assemblies 300 are arranged sequentially along the first direction F1. For example, three cutter assemblies 300 are provided, and the three cutter assemblies 300 are arranged sequentially along the first direction F1, and the three cutter assemblies 300 can move synchronously to improve cutting efficiency.

[0051] The rotary drive assembly 400 drives the cutter 310 to rotate around its own axis, so that the contact between the blade of the cutter 310 and the waste film roll A is an instantaneous point contact. The rotating blade will quickly cut the waste film instead of slowly pulling it, and at the same time, it can reduce the force per unit area, thereby effectively preventing the waste film roll A from tearing or breaking due to pulling, ensuring that the waste film roll A is completely peeled off along the cut, and reducing the generation of broken film.

[0052] In some embodiments, the rotary drive assembly 400 includes a rotary drive member 410 and a rotary transmission member 420. The two ends of the rotary transmission member 420 are respectively connected to the rotary drive member 410 and the cutter 310. The rotary drive member 410 drives the rotary transmission member 420 to rotate, thereby causing the cutter 310 to rotate.

[0053] Please see Figure 4In some embodiments, the rotary transmission component 420 includes a first transmission wheel 421, a flexible transmission component 422, and a second transmission wheel 423. The first transmission wheel 421 is disposed at the output end of the rotary drive component 410, and the flexible transmission component 422 is disposed between the first transmission wheel 421 and the second transmission wheel 423. The second transmission wheel 423 is coaxially connected to the cutter 310. In one example, the rotary drive component 410 is a rotary motor, and the flexible transmission component 422 is a flexible transmission chain. The flexible transmission chain is wound around the first transmission wheel 421 and the second transmission wheel 423. The first transmission wheel 421 is coaxially fixed to the output shaft of the rotary motor. When the rotary motor rotates, the first transmission wheel 421 rotates, and the flexible transmission chain drives the second transmission wheel 423 to rotate. The cutter 310, which is coaxially connected to the second transmission wheel 423, also rotates synchronously. Of course, the flexible transmission component 422 can also be a flexible belt.

[0054] In some embodiments, the cutter assembly 300 further includes a cutter shaft 330, one end of which is coaxially fixed to the cutter 310, and the other end is coaxially fixed to the second transmission wheel 423. Please continue reading. Figure 4 The cutter shaft 330 is connected to the base. The cutter shaft 330 has two opposite ends. One end is fixed coaxially with the cutter 310, and the other end is fixed with the second transmission wheel 423. When the second transmission wheel 423 rotates, the cutter shaft 330 rotates synchronously, thereby driving the cutter 310 to rotate.

[0055] The horizontal movement drive assembly 500 drives the cutter 310 to move along the first direction F1, so that the movement path of the cutter 310 can cover the entire length of the waste film roll A, thereby completely peeling off the waste film. The horizontal movement drive assembly 500 is connected to the cutter 310, and when the horizontal movement drive assembly 500 moves, the cutter 310 can move linearly along the first direction F1. The horizontal movement drive assembly 500 can be connected to the cutter 310 via a base.

[0056] In some embodiments, the horizontal movement drive assembly 500 includes a horizontal movement drive member 510 and a horizontal movement transmission member 520. The output end of the horizontal movement drive member 510 is connected to the horizontal movement transmission member 520. The horizontal movement drive member 510 drives the horizontal movement transmission member 520 to move, thereby causing the cutter 310 to move along a first direction F1. The horizontal movement drive member 510 provides driving force, and the horizontal movement transmission member 520 transmits the driving force to the cutter 310, causing the cutter 310 to move linearly.

[0057] In other embodiments, the horizontal movement drive assembly 500 includes a linear cylinder or linear motor that can be connected to the cutter 310 to directly provide the cutter 310 with a driving force for linear movement.

[0058] Please see Figure 3In some embodiments, the horizontal movement drive 510 is a rotary motor, and the horizontal movement transmission 520 includes a lead screw 521 and a slider 522 disposed on the lead screw 521. The lead screw 521 is arranged along a first direction F1, and one end is coaxially connected to the output end of the horizontal movement drive 510. The slider 522 is movably disposed on the lead screw 521 and connected to the cutter 310, so that the rotation of the lead screw 521 is converted into linear movement of the slider 522 along the first direction F1, thereby driving the cutter 310 to move synchronously. Specifically, the rotation of the horizontal movement drive 510 drives the lead screw 521 to rotate. The lead screw 521 and the slider 522 are slidably connected by a threaded engagement. When the lead screw 521 rotates, the slider 522 can move linearly along the axial direction of the lead screw 521 (i.e., the first direction F1), thereby converting the rotation of the horizontal movement drive 510 into linear movement.

[0059] In other embodiments, the horizontal movement transmission 520 may include a combination of gears and racks, or a combination of belt-driven pulleys, or other transmission structures capable of converting the rotation of the horizontal movement drive 510 into linear movement.

[0060] In some embodiments, the cutting device further includes a lifting assembly 600, which is disposed on the mounting frame 100. The lifting assembly 600 is connected to the clamping assembly 200 and is used to drive the clamping assembly 200 to move along the second direction F2. That is, the lifting assembly 600 is used to drive the waste film roll A to move in the vertical direction. Since the cutter assembly 300 and the clamping assembly 200 are arranged sequentially along the second direction F2, that is, the cutter assembly 300 and the waste film roll A are arranged sequentially along the second direction F2, adjusting the position of the waste film roll A in the second direction F2 can adjust the distance between the cutter assembly 300 and the waste film roll A, thereby adjusting the cutting depth of the cutter assembly 300 into the waste film roll A, thus avoiding damage to the core inside the waste film roll A. In specific applications, based on waste film rolls A of different sizes, the appropriate cutting depth can also be adjusted by adjusting the distance between the cutter assembly 300 and the waste film roll A, so as to peel off the waste film as completely as possible while avoiding cutting the core, thereby reducing debris. For example, when the waste film roll A is large in size (the waste film is thick), directly cutting it to the thickness of the waste film in one go using the cutter 310 may affect the cutting effect due to the excessive thickness. By adjusting the distance between the cutter and the waste film roll A, the waste film can be cut off layer by layer in multiple times.

[0061] Please see Figure 5In some embodiments, the lifting assembly 600 includes a drive handwheel 610, a threaded rod 620, and a connecting part 630. The threaded rod 620 extends along the second direction F2 and is fixed on the mounting bracket 100. The connecting part 630 is connected to the clamping assembly 200 and is slidably connected to the threaded rod 620 by thread engagement. The drive handwheel 610 is connected to the connecting part 630. The drive handwheel 610 rotates under manual force and drives the connecting part 630 on the threaded rod 620 to move along the axial direction of the threaded rod 620, thereby realizing the linear movement of the clamping assembly 200 along the second direction F2 (i.e., the vertical direction).

[0062] In other embodiments, the lifting assembly 600 includes a linear motor or a linear cylinder.

[0063] In some embodiments, one end of the air shaft 210 is hinged to the mounting bracket 100, and the other end is snap-fitted to the mounting bracket 100. This can also be understood as the air shaft 210 being able to rotate relative to the mounting bracket 100 to different angles after the snap-fit ​​connection is released. In practical applications, the air shaft 210 can be rotated to a position convenient for installing the waste film roll A, then the waste film roll A can be placed on the air shaft 210, and then the air shaft 210 can be rotated to fix its mounting bracket 100, thereby securing the waste film roll A. Correspondingly, when removing the waste film roll A, the air shaft 210 can also be rotated to a suitable position (i.e., a position without interference and convenient for operation) for removal.

[0064] The mounting bracket 100 is provided with a tray 111, a first fastening structure 112, and a second fastening structure 113. The air shaft 210 is mounted on the tray 111, and the first fastening structure 112 and the second fastening structure 113 are snapped together to fix the air shaft 210 to the tray 111. Please refer to [link / reference]. Figure 5 The tray 111, the first fastening structure 112, and the second fastening structure 113 are mounted on the first frame 110. One end of the first fastening structure is hinged to the tray 111, forming a space with the tray 111 to accommodate the air shaft 210. The other end can be fastened to the second fastening structure 113. In practical applications, after releasing the connection between the first fastening structure 112 and the second fastening structure 113, rotating the first fastening structure 112 can engage the fixation of the air shaft 210. Reversing the operation can achieve the fixation of the air shaft 210.

[0065] The specific operation process of the embodiments of this application is as follows: After fixing the waste film roll A by the air expansion shaft 210, the air expansion shaft 210 is moved by the lifting component 600 to adjust the distance between the waste film roll A and the cutter 310 so that the cutter 310 can cut into a suitable thickness (the radial dimension of the waste film roll A). The rotary drive component 400 and the horizontal movement drive component 500 are started to form a cut along the length direction of the waste film roll A. The cut covers the entire length of the waste film roll A. The waste film on both sides of the cut is manually peeled off to remove it. When the thickness of the waste film on the waste film roll A is large, the distance between the waste film roll A and the cutter 310 is adjusted again by the lifting component 600. The rotary drive component 400 and the horizontal movement drive component 500 are started to cut off the waste film. The above steps are repeated until all the waste film is removed.

[0066] The above examples illustrate this application only to aid understanding and are not intended to limit its scope. Those skilled in the art to which this application pertains can make various simple deductions, modifications, or substitutions based on the ideas presented.

Claims

1. A cutting device for waste membrane rolls of lithium battery separators, characterized in that, include: Mounting rack; A clamping assembly is disposed on the mounting frame for clamping the waste film roll so that the waste film roll is placed along a first direction; A cutting assembly is disposed on one side of the clamping assembly in a second direction; the cutting assembly includes a cutter for cutting into the waste film roll in the second direction to remove the waste film on the waste film roll and take out the core inside the waste film roll; A rotary drive assembly, connected to the cutter, is used to drive the cutter to rotate about its own axis to rotary cut the waste film roll; as well as A horizontal movement drive assembly, connected to the cutter, is used to drive the cutter to move along the first direction; Wherein, the first direction and the second direction are perpendicular to each other.

2. The cutting device for waste membrane rolls of lithium battery separators according to claim 1, characterized in that, The rotary drive assembly includes a rotary drive component and a rotary transmission component, with both ends of the rotary transmission component connected to the rotary drive component and the cutter, respectively. The rotary drive component drives the rotary transmission component to rotate, which in turn drives the cutter to rotate.

3. The cutting device for waste membrane rolls of lithium battery separators according to claim 2, characterized in that, The rotary transmission component includes a first transmission wheel, a flexible transmission component, and a second transmission wheel. The first transmission wheel is disposed at the output end of the rotary drive component, the flexible transmission component is disposed between the first transmission wheel and the second transmission wheel, and the second transmission wheel is coaxially connected to the cutter.

4. The cutting device for waste membrane rolls of lithium battery separators according to claim 3, characterized in that, The cutter assembly also includes a cutter shaft, one end of which is coaxially fixed to the cutter, and the other end of which is coaxially fixed to the second transmission wheel.

5. The cutting device for waste membrane rolls of lithium battery separators according to claim 1, characterized in that, The horizontal movement drive assembly includes a horizontal movement drive component and a horizontal movement transmission component. The output end of the horizontal movement drive component is connected to the horizontal movement transmission component. The horizontal movement drive component drives the horizontal movement transmission component to move and drives the cutter to move along the first direction.

6. The cutting device for waste membrane rolls of lithium battery separators according to claim 5, characterized in that, The horizontal movement transmission component includes a lead screw and a slider disposed on the lead screw. The lead screw is arranged along the first direction and one end is coaxially connected to the output end of the horizontal movement drive component. The slider is movably disposed on the lead screw and connected to the cutter, so that the rotational energy of the lead screw is converted into linear movement of the slider along the first direction, thereby driving the cutter to move synchronously.

7. The cutting device for waste membrane rolls of lithium battery separators according to claim 1, characterized in that, The cutting device further includes a lifting assembly, which is disposed on the mounting frame; the lifting assembly is connected to the clamping assembly and is used to drive the clamping assembly to move along the second direction.

8. The cutting device for waste membrane rolls of lithium battery separators according to claim 1, characterized in that, The clamping assembly includes an air shaft, which is inserted into the waste film roll to fix the waste film roll; the air shaft is detachably connected to the mounting frame.

9. The cutting device for waste membrane rolls of lithium battery separators according to claim 8, characterized in that, One end of the air shaft is hinged to the mounting bracket, and the other end is snapped into the mounting bracket.

10. The cutting device for waste membrane rolls of lithium battery separators according to any one of claims 1-9, characterized in that, The cutter assembly is provided in at least two parts, and the at least two cutter assemblies are arranged sequentially along the first direction.

Images