Tail roll cutting device

Abstract

The utility model relates to a tail roll cutting device which comprises a cutter and a limiting piece used for limiting the sliding direction of the cutter, the limiting piece and the cutter are arranged in a crossed mode, an abutting piece is arranged on the side, facing the cutting edge of the cutter, of the limiting piece, and the abutting piece is arranged at the initial end of the cutting path of the cutter. The abutting piece is movably arranged in the direction towards or away from the limiting piece, and in the moving process of the abutting piece, the abutting piece abuts against or is separated from the limiting piece; the abutting piece comprises a first abutting arm, and the side wall, facing the cutter, of the limiting piece protrudes out of the first abutting arm or is flush with the first abutting arm. In the process of cutting off the diaphragm, the abutting part slides towards the limiting part and abuts against the edge, close to the initial end of the cutter, of the diaphragm under the combined action of the abutting part and the limiting part, cutting of edge notches is facilitated, the diaphragm cutting efficiency is improved, and the conditions of burrs and wrinkles are reduced.

Description

Technical Field

[0001] This utility model belongs to the field of battery manufacturing, specifically, it relates to a tail roll cutting device. Background Technology

[0002] Stacking is a crucial step in determining the quality of battery cells. Currently, stacking machines are used in related technologies. Typically, a stacking machine includes a loading area for placing electrode sheets, a stacking area for stacking battery cells, a tail-wound winding and cutting area, a cell transfer and adhesive application area, and a hot-pressing area. During battery cell manufacturing, the electrode sheets are usually transferred to the stacking area, stacked with the separator in the stacking area, the stacked battery cells are pulled out, and the tail-wound is wound and cut before adhesive application and hot pressing.

[0003] Currently, the cutting device for the tail roll includes a sliding cutter with a limit rod on one side, positioned between the cutter handle and the blade. As the cutter slides along the limit rod, it cuts the diaphragm located near the blade. A heating element is also installed on the limit rod to heat the diaphragm that has moved to the vicinity of the limit rod, helping to reduce its strength and improve cutting efficiency. After stacking, the stacked cells are pulled out using grippers. At this point, one end of the diaphragm is connected to the cell, and the other end is connected to the diaphragm roll and tensioned. The tensioned diaphragm softens under the action of the limit rod, allowing the sliding cutter to cut it quickly and easily.

[0004] During use, it was found that due to process requirements, some diaphragms could not be cut using thermal cutting. However, when the heating tube was turned off for cutting, the diaphragms could not be cut completely, and the cut edges of the diaphragms also had burrs and wrinkles. Utility Model Content

[0005] In order to improve the efficiency and quality of tail roll cutting, reduce the probability of burrs or wrinkles on the edge of the separator, and improve the quality of the battery cell, this application provides a tail roll cutting device.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] A tail-roll cutting device includes a cutter and a limiting member for limiting the sliding direction of the cutter. The limiting member and the cutter are arranged crosswise. An abutment is provided on the side of the limiting member facing the cutter blade. The abutment is located at the initial end of the cutter's cutting path. The abutment is movable in a direction toward or away from the limiting member. During the movement of the abutment, the abutment abuts against or separates from the limiting member. The abutment includes a first abutment arm. The side wall of the limiting member facing the cutter protrudes from the first abutment arm or is flush with the first abutment arm.

[0008] Preferably, the limiting member has a limiting hole, the cutter passes through the limiting hole, and the cutting edge of the cutter protrudes from the side wall of the limiting hole.

[0009] Preferably, the abutting member further includes a second abutting arm, and a gap is formed between the first abutting arm and the second abutting arm. When the abutting member is pressed against the limiting member, both the second abutting arm and the first abutting arm abut against the side wall of the limiting hole, and the cutting path of the cutter passes through the gap. The distance between the first abutting wall and the second abutting wall is fixed or adjustable.

[0010] Preferably, it also includes a baffle plate, which is disposed at one or both ends of the cutting path, and the abutment is slidably disposed along the cutting blade sliding direction. In the initial state, the baffle plate separates the abutment and the cutting blade.

[0011] Preferably, a fourth mounting plate is slidably disposed on the side of the shield away from the limiting member along the cutting blade sliding direction, and the abutment is slidably disposed on the side wall of the fourth mounting plate along the direction close to or away from the limiting member, and the abutment slides synchronously with the fourth mounting plate along the cutting blade sliding direction.

[0012] Preferably, a fifth mounting plate is slidably disposed on one side of the fourth mounting plate, and an oblong hole is provided on the abutment near the fifth mounting plate, and the abutment is detachably connected to the fifth mounting plate through the oblong hole.

[0013] Preferably, a tension roller is also provided on one side of the limiting member. The tension roller is slidably disposed relative to the cutter, and the sliding direction of the tension roller is consistent with the sliding direction of the abutment member relative to the fourth mounting plate.

[0014] Preferably, it also includes a sliding plate and a sixth mounting plate, wherein the sliding plate is slidably disposed along the sixth mounting plate, and during the sliding process of the sliding plate, the cutter, the limiting member and the abutment member slide synchronously with the sliding plate.

[0015] Preferably, the tension roller is disposed on the sliding plate, and a cutter mounting seat is slidably disposed on the side wall of the sliding plate, and the cutter is slidably mounted on the cutter mounting seat.

[0016] Preferably, the sliding plate is further provided with a limiting seat for limiting the sliding plate and the cutter mounting seat, and a buffer pad with elastic deformation capability is installed on the limiting seat, the buffer pad being disposed towards the cutter mounting seat or the sixth mounting plate.

[0017] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art.

[0018] By setting up abutment and limiting components, after the diaphragm passes through the cutting path of the cutter, the abutment slides and abuts against the limiting component, pressing the edge near the initial end of the cutting path to facilitate the cutting of the diaphragm edge. At the same time, because the diaphragm edge is pressed against, it has a certain limiting effect on the diaphragm, effectively reducing the occurrence of wrinkles or even failure to cut the diaphragm due to movement under the action of the cutter. After the diaphragm edge is cut, with one end pressed against the cutting edge, the cutter only needs a small force to cut the remaining diaphragm, reducing the generation of burrs and wrinkles.

[0019] By setting up a baffle plate, the cutter is blocked during the non-cutting stage, reducing interference between the cutter and the diaphragm. At the same time, by moving the abutment along the cutting direction of the cutter, the baffle plate is moved out of the space between the limiting member and the abutment, and then moved to the side of the diaphragm away from the limiting member. This causes the abutment to slide towards the limiting member, pressing the diaphragm against it. With this setup, in the initial state, the abutment is placed outside the diaphragm's movement path, effectively reducing the impact of the abutment on the diaphragm and facilitating operation.

[0020] Furthermore, by sliding the sliding plate and tension roller, and by making the cutter slide relative to the sliding plate, the diaphragm is pressed together, which is convenient and quick. The abutment is set at the end of the cutter's cutting path, which effectively reduces the space occupied by the cutting device and improves space utilization. Attached Figure Description

[0021] Figure 1 A schematic diagram of the overall structure of a tail roll cutting device in Embodiment 1 of this application;

[0022] Figure 2 yes Figure 1 Enlarged view of section A in the middle;

[0023] Figure 3 This is a schematic diagram of Embodiment 1 of this application, used to highlight the third mounting plate;

[0024] Figure 4 This is a schematic diagram of Embodiment 1 of this application, used to highlight the abutment component;

[0025] Figure 5 This is a schematic diagram in Embodiment 1 of this application to highlight the sixth mounting plate;

[0026] Figure 6 This is a schematic diagram of Embodiment 1 of this application, used to highlight the mounting method of the first drive cylinder;

[0027] Figure 7 This is a schematic diagram of Embodiment 2 of this application, used to highlight the limiting member;

[0028] Figure 8 This is a schematic diagram of Embodiment 3 of this application, used to highlight the limiting member.

[0029] In the diagram: 1. Cutter mounting base; 2. Cutter fixing base; 3. Cutter; 4. First mounting plate; 5. Push cylinder; 6. Second mounting plate; 7. Limiting component; 71. Limiting hole; 8. Third mounting plate; 81. Baffle plate; 9. First sliding cylinder; 10. Fourth mounting plate; 11. Second sliding cylinder; 12. Fifth mounting plate; 13. Abutting component; 131. First abutting arm; 132. Second abutting arm; 133. Mounting arm; 14. Sixth mounting plate; 15. Abutting hole; 16. Sliding plate; 17. Limiting base; 18. Buffer pad; 19. First drive cylinder; 20. Connecting plate; 21. Cutter cylinder; 22. Tensioning roller; 23. Slide rail mounting plate. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0031] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] In the description of this application, "intersection" refers to the formation of intersecting straight line segments or curved segments with intersection points between two objects on the contact surface of the two objects or on the projection surface of the gap between the two objects, and the endpoints of the two intersecting line segments do not coincide with the intersection point; the intersecting arrangement of the limiting member 7 and the cutter 3 means that on the contact surface or the projection surface of the gap, the two ends of the projection of the cutter 3 protrude from both sides of the projection of the limiting member 7; at this time, the blade of the cutter 3 forms an angle greater than 0° and less than 180° with the limiting member 7, and at least part of the blade is located where the cutter 3 protrudes from the limiting member 7.

[0034] In the description of this application, the cutting path refers to the path from contact to separation between the cutter 3 and the diaphragm; the initial end of the cutting path refers to the end where the cutter 3 and the diaphragm change from a separated state to a contact state; when the movement of the cutter 3 is set to an automatic reset state, the limiting member 7 is provided at one end where the cutter 3 is installed; when the cutter 3 is set to a bidirectional sliding cutting state, the limiting member 7 can be symmetrically provided at both ends of the cutting path.

[0035] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0036] Example 1

[0037] A tail roll cutting device, as shown in the reference Figure 1 and Figure 2 The device includes a cutter mounting base 1. In this embodiment, the cutter mounting base 1 is plate-shaped. A sliding rail and a matching slider are provided on one side of the cutter mounting base 1. The sliding rail is arranged along the length of the cutter mounting base 1. A cutter fixing base 2 is fixedly installed on the side of the slider away from the cutter mounting base 1, and a cutter 3 is installed through the cutter fixing base 2. An L-shaped first mounting plate 4 is fixedly provided on one end of the side wall of the cutter mounting base 1 facing the cutter 3. A push cylinder 5 is installed through the L-shaped first mounting plate 4. The driving end of the push cylinder 5 is connected to the side wall of the cutter 3 to drive the cutter 3 to slide. In other embodiments, the push cylinder 5 can also be replaced by conventional driving methods such as manual drive, belt drive, and gear drive. In addition, in order to facilitate the cutting of the diaphragm, the blade of the cutter 3 is set away from the cylinder, and the cutter 3 is tilted towards the cylinder as a whole.

[0038] Reference Figure 2 and Figure 3 The cutter mounting base 1 is also equipped with L-shaped second mounting plates 6 at both ends of the slide rail. Limiting members 7 are installed on the second mounting plates 6, and the limiting members 7 are arranged along the length direction of the cutter mounting base 1. In this embodiment, the limiting member 7 is a limiting rod that abuts against the side wall of the cutter 3 to limit the sliding direction of the cutter 3. During the cutting process, the blade of the cutter 3 protrudes from the side wall of the limiting member 7. After the diaphragm is pressed against the limiting member 7, the cutter 3 slides. During the sliding process, the blade of the cutter 3 contacts the edge of the diaphragm and cuts the diaphragm during the continuous movement.

[0039] Reference Figure 3 A U-shaped third mounting plate 8 is installed on the side of the cutter mounting base 1 opposite to the cutter 3. There are two U-shaped third mounting plates 8, which are respectively set at both ends of the cutting path of the cutter 3. One longer side wall of the third mounting plate 8 is connected to the cutter mounting base 1, and the bottom wall and the other side wall form a shielding plate 81 to shield the end of the sliding track of the cutter 3. In the initial state, the cutter 3 is placed in the groove formed by the third mounting plate 8 near the push cylinder 5, which effectively reduces the possibility of the diaphragm being accidentally damaged by the cutter 3 during the sliding process.

[0040] Reference Figure 3 and Figure 4 A first sliding cylinder 9 is installed on the bottom wall of the third mounting plate 3. A fourth mounting plate 10 is connected to the drive end of the first sliding cylinder 9. The fourth mounting plate 10 slides along the length of the cutter mounting base 1 under the action of a second sliding cylinder 11. A second sliding cylinder 11 is installed on the fourth mounting plate 10. A fifth mounting plate 12 is slidably connected to the drive end of the second sliding cylinder 11. An abutment 13 is installed on the fifth mounting plate 12. An oblong hole is provided at the connection position between the abutment 13 and the fifth mounting plate 12 to facilitate the adjustment of the position of the abutment 12.

[0041] Reference Figure 4 In this embodiment, the abutment 13 is a first abutment arm 131 arranged in an L-shaped plate. The abutment 13 slides along the direction of approaching or moving away from the limiting member 7 with the fifth mounting plate 12, and in the initial state, the side wall of the abutment 13 does not protrude from the baffle plate 81. Under the action of the first sliding cylinder 9 and the second sliding cylinder 11, the abutment 13 can perform local two-dimensional movement in the plane where the cutter 3 is located and abut against the limiting member 7; when the limiting member 7 abuts against the abutment 13 and the cutter 3 moves to the position of the abutment 13, the blade of the cutter 3 abuts against the side wall of the abutment 13.

[0042] During the stacking process, both the cutter 3 and the abutment 13 are in their initial state. The baffle plate 81 provides a shielding effect for the cutter 3 and the abutment 13. When the diaphragm passes the limiting member 7 with the battery cell and reaches the appropriate position, the operator needs to activate the first sliding cylinder 9 to push the fourth mounting plate 10 to slide along the length of the cutter mounting base 1. The abutment 13 slides synchronously with the fourth mounting plate 10, protruding from the side wall of the baffle plate 81 and being fully exposed. At this time, the second sliding cylinder 11 is activated to push the abutment 13 towards the limiting member 7 and abut against the limiting member 7. During this process, the abutment 13 and the limiting member 7 work together to clamp the edge of the diaphragm located at the bottom of the limiting member 7. At this time, the sliding cutter 3 effectively reduces the movement of the edge under the action of the cutter 3 during the diaphragm cutting process due to the clamping of the diaphragm edge, reducing the generation of wrinkles and burrs and improving the cutting quality.

[0043] In this embodiment, the limiting member 7 is positioned between the cutter 3 and the cutter mounting base 1. In other embodiments, the limiting member 7 may also be positioned on the side of the cutter 3 away from the cutter mounting base 1.

[0044] Reference Figure 5 and Figure 6The tail roll cutting device also includes a sixth mounting plate 14, which has multiple mounting holes. The tail roll cutting device can be installed at the part where the tail roll needs to be cut through the mounting holes. A slide rail and a first drive cylinder 19 are installed vertically on one side of the sixth mounting plate 14, and a sliding plate 16 is slidably mounted on the slide rail. In order to ensure the stability of the sliding process, there are two slide rails, and the two slide rails are symmetrically spaced apart. A connecting plate 20 is installed on the side wall of the sliding plate 16. The connecting plate 20 is connected to the drive end of the first drive cylinder 19, so that the sliding plate 16 slides under the action of the first drive cylinder 19.

[0045] Reference Figure 5 A limiting seat 17 is installed on the side of the sliding plate 16 facing the sixth mounting plate 14. The limiting seat 17 is located in the gap between the two slide rails. Correspondingly, the side wall of the sixth mounting plate 14 has an abutment hole 15. The side wall of the limiting seat 17 away from the sliding plate 16 extends into the abutment hole 15. In this embodiment, the limiting seat 17 that cooperates with the sixth mounting plate 14 is T-shaped. The belly of the limiting seat 17 extends into the abutment hole 15. A connecting rod is vertically inserted through the belly of the limiting seat 17, and a buffer pad 18 is provided at the end of the connecting rod. In this embodiment, the buffer pad 18 is a silicone pad. When the sliding plate 16 and the sixth mounting plate 14 reach the maximum relative sliding distance, the buffer pad 18 abuts against the side wall of the abutment hole 15, limiting the sliding plate 16.

[0046] Reference Figure 5 A tension roller 22 mounting seat is installed on the side of the sliding plate 16 near the cutter 3. The tension roller 22 is rotatably mounted on the tension roller 22 mounting seat. The tension roller 22 is slidably positioned on one side of the diaphragm movement path. During the cutting process, when the diaphragm becomes loose, the operator can slide the sliding plate 16. The sliding plate 16 drives the tension roller 22 to move, pressing the diaphragm against it, further adjusting the tension of the diaphragm, facilitating the cutting of the membrane layer, and reducing the situation of incomplete cutting and rough edges caused by the loose diaphragm.

[0047] Reference Figure 1 A cutter cylinder 21 is installed on the side of the sliding plate 16 away from the sixth mounting plate 14. The cutter mounting seat 1 is fixedly connected to the drive end of the cutter cylinder 21 and slides vertically under the action of the cutter cylinder 21. A slide rail mounting plate 23 is installed on the side of the cutter mounting seat 1 facing the cylinder. A slide rail is installed on one side of the slide rail mounting plate 23. The slider that cooperates with the slide rail is connected to the cutter cylinder 21 through the slide rail connecting plate. The slide rail setting further limits the sliding process of the cutter 3 and reduces the occurrence of the cutter mounting seat 1 deviating.

[0048] In addition, the side wall of the sliding plate 16 is also provided with a limiting seat 17 facing the cutter mounting seat 1. In this embodiment, the limiting seat 17 is L-shaped, and the concave corner of the limiting seat 17 is facing the cutter mounting seat 1. A buffer pad 18 is installed on the side wall of the limiting seat 17 facing the cutter mounting seat 1 for abutting against the cutter mounting seat 1, limiting the cutter mounting seat 1, and reducing the occurrence of interference.

[0049] After clamping the battery cell with a gripper and pulling it out, the operator can first activate the first drive cylinder 19 to drive the sliding plate 16 to slide. During this process, the cutter mounting base 1, cutter 3, limiting member 7, and abutment member 13 all slide synchronously with the sliding plate 16 in the vertical direction. The tension roller 22 abuts against the diaphragm and tightens the diaphragm. After the diaphragm is tightened, the cutter cylinder 21 is activated to drive the cutter mounting base 1 to slide relative to the sliding plate 16, so that the diaphragm abuts against the limiting member 7. Then, the abutment member 13 is driven... Sliding along the length of the cutter mounting base 1 until the abutment 13 is no longer blocked by the baffle plate 81, the abutment 13 is driven to move toward the limiting member 7 and abut against the limiting member 7, thereby pressing the edge of the diaphragm near the third mounting plate 8. At this time, the cutter 3 is driven to move and cut the edge of the diaphragm. Under the pressure and the presence of the notch, the force required for the cutter 3 to cut the diaphragm is reduced, which improves the efficiency of diaphragm cutting and reduces the occurrence of burrs, wrinkles and incomplete cuts.

[0050] Example 2

[0051] A tail roll cutting device, as shown in the reference Figure 7 The difference from Embodiment 1 is that the limiting member 7 has a limiting hole 71 through the side wall of the cutter mounting base 1, and the cutter 3 is disposed through the limiting hole 71. The abutment member 13 includes a first abutment arm 131 and abutment arm 132. In this embodiment, the first abutment arm 131 and the second abutment arm 132 are disposed separately. The first abutment arm 131 and the second abutment arm 132 are both connected to the fifth mounting plate 12 at the drive end of the second sliding cylinder 11, so that the brackets of the first abutment arm 131 and the second abutment arm 132 form a relief groove for avoiding the cutter 3. The two side walls of the relief groove are respectively flush with the two side walls of the limiting hole 71 facing the cutter, which reduces the interference of the abutment member 13 with the cutter 3.

[0052] In other embodiments, to mitigate the impact of the installation process on the gap between the first abutment arm 131 and the second abutment arm 132, other abutment members 13 with grooves, such as U-shaped, F-shaped, or arc-shaped ones, connected to the first abutment arm 131 and the second abutment arm 132 can also be used. During the cutting process, the abutment member 13 slides along the length of the cutter mounting base 1. During the sliding process, the side wall of the abutment member 13 protrudes from the side wall of the baffle plate 81 and gradually becomes fully exposed to the side of the limiting member 7 facing the blade. At this time, the abutment member 13 slides toward the limiting member 7 and abuts against the limiting member 7, thus pressing the end of the diaphragm together.

[0053] Example 3

[0054] A tail roll cutting device, as shown in the reference Figure 8 The difference from Embodiment 2 is that the first abutting arm 131 and the second abutting arm 132 are detachably connected to the fifth mounting plate 12 through different mounting walls 133. The waist-shaped hole is opened on the mounting wall 133. The positions of the first abutting arm 131 and the second abutting arm 132 can be adjusted by the cooperation of the waist-shaped hole and the bolt. When the abutting part 13 is worn or otherwise affects the tensioning effect, the operator can adjust the relative position between the first abutting arm 131 and the second abutting arm 132 to ensure the abutting effect between the abutting part 13 and the limiting part 7, thereby improving the cutting quality of the diaphragm.

[0055] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. The implementation schemes in the above embodiments can also be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A tail roll cutting device, characterized in that, The device includes a cutter (3) and a limiting member (7) for limiting the sliding direction of the cutter (3). The limiting member (7) is arranged crosswise with the cutter (3). The limiting member (7) has an abutment (13) on the side facing the blade of the cutter (3). The abutment (13) is located at the initial end of the cutting path of the cutter (3). The abutment (13) is moved in a direction toward or away from the limiting member (7). During the movement of the abutment (13), the abutment (13) abuts against or separates from the limiting member (7). The abutment (13) includes a first abutment arm (131). The side wall of the limiting member (7) facing the cutter (3) protrudes from the first abutment arm (131) or is flush with the first abutment arm (131).

2. The tail roll cutting device according to claim 1, characterized in that, The limiting member (7) has a limiting hole (71), the cutter (3) passes through the limiting hole (71), and the cutting edge of the cutter (3) protrudes from the side wall of the limiting hole (71).

3. The tail roll cutting device according to claim 2, characterized in that, The abutment (13) also includes a second abutment arm (132). A gap is formed between the first abutment arm (131) and the second abutment arm (132). When the abutment (13) is pressed against the limiting member (7), the second abutment arm (132) and the first abutment arm (131) both abut against the side wall of the limiting hole (71), and the cutting path of the cutter (3) passes through the gap. The distance between the first abutment arm (131) and the second abutment arm (132) is fixed or adjustable.

4. The tail roll cutting device according to claim 1, characterized in that, It also includes a baffle plate (81), which is disposed at one or both ends of the cutting path. The abutment (13) is slidably disposed along the sliding direction of the cutter (3). In the initial state, the baffle plate (81) separates the abutment (13) and the cutter (3).

5. The tail roll cutting device according to claim 4, characterized in that, The fourth mounting plate (10) is slidably disposed on the side of the shield (81) away from the limiting member (7) along the sliding direction of the cutter (3). The abutting member (13) is slidably disposed on the side wall of the fourth mounting plate (10) along the direction close to or away from the limiting member (7), and the abutting member (13) slides synchronously with the fourth mounting plate (10) along the sliding direction of the cutter (3).

6. The tail roll cutting device according to claim 5, characterized in that, A fifth mounting plate (12) is slidably disposed on one side of the fourth mounting plate (10). The abutment (13) has a waist-shaped hole near the fifth mounting plate (12). The abutment (13) is detachably connected to the fifth mounting plate (12) through the waist-shaped hole.

7. The tail roll cutting device according to claim 5, characterized in that, A tension roller (22) is also provided on one side of the limiting member (7). The tension roller (22) is slidably disposed relative to the cutter (3), and the sliding direction of the tension roller (22) is consistent with the sliding direction of the abutment member (13) relative to the fourth mounting plate (10).

8. The tail roll cutting device according to any one of claims 1-6, characterized in that, It also includes a sliding plate (16) and a sixth mounting plate (14). The sliding plate (16) is slidably disposed along the sixth mounting plate (14). During the sliding process of the sliding plate (16), the cutter (3), the limiting member (7) and the abutting member (13) slide synchronously with the sliding plate (16).

9. The tail roll cutting device according to claim 7, characterized in that, It also includes a sliding plate (16) and a sixth mounting plate (14). The sliding plate (16) is slidably disposed along the sixth mounting plate (14). During the sliding process of the sliding plate (16), the cutter (3), the limiting member (7) and the abutment member (13) slide synchronously with the sliding plate (16). The tension roller (22) is disposed on the sliding plate (16). The side wall of the sliding plate (16) is also slidably disposed with a cutter mounting seat (1). The cutter (3) is slidably mounted on the cutter mounting seat (1).

10. The tail roll cutting device according to claim 8, characterized in that, The sliding plate (16) is also provided with a limiting seat (17) for limiting the sliding plate (16) and the cutter mounting seat (1). The limiting seat (17) is provided with a buffer pad (18) with elastic deformation capability. The buffer pad (18) is positioned towards the cutter mounting seat (1) or the sixth mounting plate (14).

11. The tail roll cutting device according to claim 9, characterized in that, The sliding plate (16) is also provided with a limiting seat (17) for limiting the sliding plate (16) and the cutter mounting seat (1). The limiting seat (17) is provided with a buffer pad (18) with elastic deformation capability. The buffer pad (18) is positioned towards the cutter mounting seat (1) or the sixth mounting plate (14).

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