Film layer slitting device

Abstract

The utility model relates to a film layer slitting device which comprises a discharging roll, a separating assembly used for separating a base film, a slitting assembly used for slitting and conveying the base film, and a material collecting assembly used for secondary attaching and material collecting of the base film and the base film after slitting, the separating assembly comprises a first adjusting roller arranged on one side of the discharging roll, and a second adjusting roller arranged on the other side of the discharging roll. The slitting assembly comprises a second conveying roller and a cutter, the discharging roll, the second conveying roller and the first adjusting roller are distributed in a triangular shape, and the cutter is arranged on one side of the second conveying roller and used for slitting a film layer conveyed to the second conveying roller. The base film and the bottom film are separated, the separated base film is cut and then attached to the bottom film for the second time, and the situation that the cutter is wound by the bottom film is effectively improved.

Description

Technical Field

[0001] The present application belongs to the field of film slitting, and specifically, relates to a film slitting device. Background Art

[0002] During the battery production process, it is usually necessary to separate and cut the materials involved. In the prior art, a slitting device is usually used for slitting. The slitting device includes a feed roll, a first conveyor roller, a slitting knife, a second conveyor roller and a receiving roll which are arranged in sequence. During the slitting process, the material layer fed out of the feed roll is conveyed to the position of the slitting knife under the action of the first conveyor roller. After being cut by the slitting knife, the material layer is moved to the receiving position by the second conveyor roller for receiving.

[0003] During the material layer transmission process, the conveying roller drives the material layer to move through friction. The tension on the bottom film layer close to the roller axis is greater than the tension on the upper base film. Under the action of the tension, the bottom film is stretched, relaxed, and even drooped. During the slitting process, there is a phenomenon that the loose and sagging bottom film is wrapped around the cutter and conveying roller, affecting the normal slitting. Utility Model Content

[0004] In order to reduce the occurrence of bottom film entanglement with the knife and ensure the normal slitting of the material layer, the present application provides a film layer slitting device.

[0005] In order to solve the above technical problems, the present application provides a film slitting device.

[0006] A film layer slitting device comprises a feeding roll, a separation component for separating a base film, a slitting component for slitting and transmitting the base film, and a receiving component for secondary bonding and receiving the slit base film and the base film, wherein the separation component comprises a first adjusting roller arranged at one side of the feeding roll, the slitting component comprises a second conveying roller and a cutter, the feeding roll, the second conveying roller and the first adjusting roller are distributed in a triangular shape, the cutter is arranged at one side of the second conveying roller, and slitting the film layer transmitted to the second conveying roller.

[0007] Preferably, the first adjusting roller is movably arranged.

[0008] Preferably, it further comprises a frame, on which a sliding track is arranged in the vertical direction, and one side of the roller shaft of the first adjusting roller is slidingly matched with the sliding track.

[0009] Preferably, the separation assembly further comprises a second adjusting roller, and the second adjusting roller is arranged on the side of the slitting assembly facing the first adjusting roller.

[0010] Preferably, the first adjusting roller and the second adjusting roller are both provided in plurality.

[0011] Preferably, the separation component comprises a first conveying roller, the first conveying roller is arranged between the unwinding roll and the second conveying roller, and the first conveying roller, the second conveying roller and the first adjusting roller are distributed in a triangular shape.

[0012] Preferably, the slitting assembly further comprises a plurality of conveying guide rollers, and the conveying guide rollers are arranged between the second conveying roller and the laminating roller.

[0013] Preferably, the conveying guide roller is arranged flush with the second conveying roller.

[0014] Preferably, the material receiving assembly comprises at least one pair of laminating rollers, and the laminating rollers are arranged on a side of the second conveying roller away from the unwinding roll.

[0015] Preferably, the laminating rollers are arranged in two groups, and the rotation speeds of the two groups of laminating rollers can be adjusted independently.

[0016] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art:

[0017] By arranging a separation component and a slitting component between the unwinding roll and the receiving component, after the material layer of the unwinding roll is unwound, the base film close to the reel of the unwinding roll and the base film far from the reel of the unwinding roll are separated into layers, and the separated base film and base film are respectively transmitted to the positions of the first adjusting roller and the second conveying roller. Under the action of the first adjusting roller and the second conveying roller, the separation of the base film and the base film is ensured, and the base film to be cut is cut by the cutter, and the cut film layer and the uncut film layer are re-laminated and rewound by the receiving component; since the film layer to be cut is separated from other film layers, the occurrence of other film layers entangled with the knife is effectively reduced;

[0018] Furthermore, by making the first adjusting roller movably arranged, during the slitting process, the length of the bottom film separated from the base film can be adjusted by adjusting the position of the first adjusting roller, so that the bottom film can be tightened, thereby further reducing the occurrence of the bottom film wrapping around the roller, further reducing the failure rate of the device, and ensuring the normal progress of the slitting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of a film layer slitting device in Example 1 of the present application;

[0020] Figure 2 is a cross-sectional view of a film layer slitting device in Example 1 of the present application;

[0021] Figure 3 This is a schematic diagram for highlighting the sliding track in Example 2 of the present application;

[0022] Figure 4 This is a schematic diagram for highlighting the second adjustment roller in Example 3 of the present application.

[0023] In the figure: 1. frame; 2. unwinding roll; 3. separation assembly; 31. first conveying roller; 32. first adjusting roller; 33. sliding track; 34. second adjusting roller; 4. slitting assembly; 41. second conveying roller; 42. conveying guide roller; 43. cutter; 44. cutting support; 5. receiving assembly; 51. laminating roller pair; 52. receiving roll; 6. bottom film; 7. base film. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0025] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, "material layer" refers to a layered material film with more than two film layers; "bottom film" refers to the film layer closer to the unwinding reel after the material layer is layered, including but not limited to a single film layer; "base film" refers to the film layer to be cut away from the unwinding reel after the material layer is layered, including but not limited to a single film layer.

[0028] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0029] Example 1

[0030] Reference Figure 1 and Figure 2A film layer slitting device includes a frame 1, a feed roll 2 detachably provided on the frame 1 through a lock, a separation component 3, a slitting component 4 and a material receiving component 5 are provided on one side of the feed roll 2, the separation component 3 and the slitting component 4 are arranged in parallel, and after the material layer unwound from the feed roll 2 is layered, a bottom film 6 layer and a base film 7 layer are formed, and the bottom film 6 layer is respectively transferred to the position of the separation component 3, and the base film 7 layer is respectively transferred to the position of the slitting component 4 for slitting. In the embodiment of the present application, the material layer is only divided into two layers. In other embodiments, the material layer can be divided into multiple layers according to the actual slitting situation, and multiple slitting components 4 are provided to slitting the layers required to be slid. The slitting base film 7 and the unslitting base film 6 are attached and rolled up under the action of the material receiving component 5, and the material slitting operation can be completed.

[0031] Reference Figure 2 The separation component 3 includes a first conveying roller 31 and a first adjusting roller 32. The first adjusting roller 32 is arranged on the side of the first conveying roller 31 away from the unwinding roll 2. The material layer is layered at the position of the first conveying roller 31. After the separated bottom film 6 layer bypasses the first adjusting roller 32, it is transmitted to the receiving component 5.

[0032] Reference Figure 2 , the slitting assembly 4 is arranged above the first conveying roller 31, and the slitting assembly 4 includes a second conveying roller 41, a conveying guide roller 42, a cutter 43 and a cutting carrier 44, wherein the cutting carrier 44 is arranged between the first conveying roller 31 and the second conveying roller 41, and the cutter 43 is slidably arranged above the cutting carrier 44 under the control of a cylinder (not shown in the figure), and in order to reduce the occurrence of the base layer to be cut falling, the cutting carrier 44 is arranged in a horizontal plane shape on one side facing the cutter 43, and the heights of the horizontal plane of the cutting carrier 44, the top surface of the first conveying roller 31, and the top surface of the second conveying roller 41 are all arranged flush. The cutting carrier 44 extends in the direction where the first conveying roller 31 and the second conveying roller 41 are located, and a gap is formed between the first conveying roller 31 for the bottom film 6 to pass through, and the cutting carrier 44 is rotatably abutted with the second conveying roller 41. In addition, in order to facilitate cutting, a cutting groove can also be correspondingly provided on the top surface of the cutting carrier 44 to cooperate with the cutter 43.

[0033] Reference Figure 2 , a plurality of conveying guide rollers 42 are provided, and the plurality of conveying guide rollers 42 are arranged in an array in the horizontal direction on the side of the second conveying roller 41 away from the unwinding roller, and the plane formed by the highest points of the plurality of conveying guide rollers 42 is also flush with the top surface of the cutting support 44. Under the action of the first conveying roller 31 and the second conveying roller 41, the separated base film 7 moves toward the receiving assembly 5 along the surface of the cutting support 44 and the conveying guide roller 42. In order to ensure that the cut material can move normally, the first conveying roller 31, the second conveying roller 41 and the conveying guide roller 42 are connected to the driving end of the same driving motor through belts or gears, and rotate synchronously under the action of the driving motor.

[0034] In other embodiments, the cutting support 44 and the cutter 43 may also be arranged in the gap between the second conveying roller 41 and the conveying guide roller 42, or in the gap between multiple conveying guide rollers 42, so as to extend the force-bearing area of ​​the base film 7 through the second conveying roller 41 and the conveying guide roller 42, thereby improving the situation where the base film 7 falls off midway.

[0035] Reference Figure 2 The material receiving assembly 5 includes a laminating roller pair 51 and a material receiving reel 52. The laminating roller pair 51 is arranged on the side of the conveying guide roller 42 away from the unwinding roller. The laminating roller pair 51 includes two laminating rollers. A gap is formed between the two laminating rollers for the base film 7 of the bottom film 6 to pass through. The cut base film 7 is laminated with the bottom film 6 under the action of the laminating rollers and is wound up together with the bottom film 6 through the material receiving reel 52. In order to improve the problem of stress concentration on the bottom film 6, multiple groups of laminating roller pairs 51 can also be set, and the laminating can be achieved by adjusting the rotation speed of different laminating roller pairs 51 to eliminate part of the stress and reduce the influence of the stress.

[0036] Example 2

[0037] A film slitting device, referring to Figure 3 , which is different from the embodiment 1, is that a vertical sliding track 33 is provided on the frame 1, and both ends of the roller shaft of the first adjusting roller 32 slide with the sliding track 33. In the initial state, the first adjusting roller 32 is located at the bottom of the sliding track 33 under the action of its own gravity. When the slitting device is used to slit the base film 7, the staff needs to move the first adjusting roller 32 to the top of the sliding track 33, separate the base film 6 from the material layer of the unwinding roll 2, and pass the separated base film 6 through the gap between the cutting platform and the first conveying roller 31, the gap between the first adjusting roller 32 and the laminating roller, and then rewind it through the rewinding roll 52. At this time, the first adjusting roller 32 has a tendency to move away from the slitting assembly 4 under the action of gravity, and the bottom film 6 is tightened. During use, when the bottom film 6 is stretched, the first adjusting roller 32 moves downward to ensure that the bottom film 6 remains tightened during the slitting process, thereby improving the situation of winding around the roller and the knife. After the first adjusting roller 32 moves to the lowest end, the staff can adjust the rotation speed of the receiving roll 52 to reel up part of the blank bottom film 6.

[0038] In other embodiments, the first adjusting roller 32 can also be configured as an elastic floating roller that rotates around a point through a rotating rod and a torsion spring, and the bottom film 6 is tightened by the action of the torsion spring; or it can be regulated by a driving component such as a cylinder. In order to alleviate the impact of sudden changes on the film layer, an elastic member can also be connected between the first adjusting roller 32 and the end of the sliding track 33.

[0039] Example 3

[0040] A film layer cutting device, which is different from the embodiment 1 in that Figure 4 The separation assembly 3 further includes a second adjustment roller 34. In the embodiment of the present application, the second adjustment roller 34 is fixedly arranged. In other embodiments, the second adjustment roller 34 can also be slidably arranged through a vertically arranged sliding track 33, and a spring is connected and arranged between the second adjustment roller 34 and the bottom wall of the sliding track 33. When the spring is only subjected to the force of the second adjustment roller 34, the second adjustment roller 34 is located at the top of the sliding track 33 to ensure the tension of the film layer. In other embodiments, the second adjustment roller 34 can also be fixedly arranged between the first adjustment roller 32 and the conveying guide roller 42.

[0041] The above is only a preferred embodiment of the present invention, and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with this patent can make some changes or modifications to equivalent embodiments of equivalent changes using the technical content suggested above without departing from the scope of the technical solution of the present invention. The implementation schemes in the above embodiments can also be further combined or replaced. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the present invention.

Claims

1. A film slitting device, characterized in that: The invention comprises a feeding roll (2), a separation component (3) for separating a base film (6), a slitting component (4) for slitting and transmitting the base film (7), and a receiving component (5) for secondary bonding and receiving the slit base film (7) and the base film (6), wherein the separation component (3) comprises a first adjusting roller (32) arranged on one side of the feeding roll (2), the slitting component (4) comprises a second transmission roller (41) and a cutter (43), the feeding roll (2), the second transmission roller (41) and the first adjusting roller (32) are distributed in a triangular shape, and the cutter (43) is arranged on one side of the second transmission roller (41) and slitting the film layer transmitted to the second transmission roller (41).

2. The film slitting device according to claim 1, characterized in that: The first adjusting roller (32) is movably arranged.

3. The film slitting device according to claim 2, characterized in that: It also comprises a frame (1), on which a sliding track (33) is arranged in the vertical direction, and at least one side of the roller axis of the first adjustment roller (32) is slidingly matched with the sliding track (33).

4. The film slitting device according to any one of claims 1 to 3, characterized in that: The separation component (3) further comprises a second adjustment roller (34), wherein the second adjustment roller (34) is arranged on the side of the slitting component (4) facing the first adjustment roller (32).

5. The film slitting device according to claim 4, characterized in that: The first adjusting roller (32) and the second adjusting roller (34) are both provided in plurality.

6. The film slitting device according to claim 1, characterized in that: The separation component (3) comprises a first conveying roller (31), wherein the first conveying roller (31) is arranged between the unwinding roll (2) and the second conveying roller (41), and the first conveying roller (31), the second conveying roller (41) and the first adjusting roller (32) are distributed in a triangular shape.

7. The film slitting device according to claim 1, characterized in that: The slitting assembly (4) further comprises a plurality of conveying guide rollers (42), wherein the conveying guide rollers (42) are arranged between the second conveying roller (41) and the laminating roller.

8. The film slitting device according to claim 7, characterized in that: The conveying guide roller (42) is arranged flush with the second conveying roller (41).

9. The film slitting device according to claim 1, characterized in that: The material receiving assembly (5) comprises at least one pair of laminating rollers (51), wherein the laminating rollers are arranged on a side of the second conveying roller (41) away from the unwinding roll (2).

10. The film slitting device according to claim 9, characterized in that: The laminating roller pairs (51) are arranged in two groups, and the rotation speeds of the two groups of laminating roller pairs (51) can be adjusted independently.

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