Lithium battery composite current collector roll film slitting device

Abstract

The utility model relates to the technical field of current collector roll film slitting, and discloses a lithium battery composite current collector roll film slitting device which comprises roll film bearing seats, a current collector roll film and two spindle bearing seats, the number of the roll film bearing seats is two, the current collector roll film is arranged between the two roll film bearing seats, and the number of the spindle bearing seats is two. The slitting device comprises two main shaft bearing seats, a main shaft is arranged between the two main shaft bearing seats, a slitting saw blade is arranged on the outer wall of the main shaft, integrated pipes are arranged on the two sides of the middle of the slitting saw blade, and inner hexagon screws are arranged in the integrated pipes. The slitting saw blade and the main shaft are fixed through abutting connection of the inner hexagon screw, the regular hexagon structure of the main shaft is matched, it can be guaranteed that the slitting saw blade is stably connected, meanwhile, the position of the slitting saw blade on the main shaft can be freely adjusted, and therefore the roll film slitting device is suitable for slitting roll films of different widths.

Description

Technical Field

[0001] The utility model relates to the technical field of current collector roll film slitting, in particular to a lithium battery composite current collector roll film slitting device. Background Art

[0002] Lithium battery composite current collector rolls are a new type of composite film used inside lithium-ion batteries. Traditional lithium-ion batteries use pure metal foils as current collectors, such as aluminum foil for the positive electrode and copper foil for the negative electrode. The primary function of these metal foils is to provide a platform to support the active materials on the electrodes and to efficiently collect and conduct the current generated by the active materials. Composite current collector rolls are typically manufactured in roll form. Different application scenarios require different material widths. Slitting allows the raw material to be cut to the size that meets the specifications of the final product.

[0003] For example, a Chinese patent (CN221165295U) discloses a device for slitting a roll of composite current collector film for lithium batteries, comprising an end cap, a synchronous wheel fixedly mounted on one side of the end cap, a roller shaft extending through one side of the synchronous wheel, a fixed shaft extending through the end of the roller shaft away from the end cap, a lower blade fixture fixedly mounted on the lower surface of the fixed shaft via bolts, a bolt hole provided on one side of the lower blade fixture, and a roller fixedly mounted on one end of the fixed shaft via the roller shaft. A connecting piece on one side of the lower blade holder is used to secure a support plate, which can be placed on the surface of the support plate for forming the film roll. Meanwhile, a fixed pressure plate on the surface of the lower blade holder on the other side mates with the film roll on the support plate. When the film roll is pushed at a constant speed by the roller, the pressure plate is placed on the surface of the film roll and rotated and pressed against the film roll via bolts to prevent wrinkling or arching. The pressure plate separates the flat film roll within the groove of the slitting saw blade connected to the connector, thereby preventing the film roll from being effectively cut into equal sections.

[0004] The slitting saw blade in the above technical solution is divided in the cutting groove. Although it ensures equal segment cutting, it is difficult to adjust the saw blade position when different cutting widths need to be adjusted. It can only be adjusted according to the spacing between the cutting grooves or its multiples. The cutting width cannot be freely adjusted, which affects use. Utility Model Content

[0005] The purpose of the present invention is to provide a device for slitting a composite current collector roll of a lithium battery to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lithium battery composite current collector roll film slitting device, comprising: a roll film bearing seat, a current collector roll film and a main shaft bearing seat, there are two roll film bearing seats, a current collector roll film is arranged between the two roll film bearing seats, there are two main shaft bearing seats, a main shaft is arranged between the two main shaft bearing seats, a slitting saw blade is provided on the outer wall of the main shaft, an integrated tube is provided on both sides of the middle of the slitting saw blade, an inner hexagon screw is provided inside the integrated tube, a retaining ring is provided on the outer side of the integrated tube, a fixing claw is provided on the inner wall of the middle of the retaining ring, a locking screw is provided between the fixing claw and the integrated tube, a driving motor is provided on the outer wall of the main shaft bearing seat on one side, and the output shaft of the driving motor is fixed to one end of the main shaft.

[0007] Furthermore, a fixing plate is provided between the middle parts of the main shaft bearing seats, a strip groove is opened in the middle of the fixing plate, a strip support ring is provided above the fixing plate, fixing bolts are provided on both sides of the bottom of the strip support ring, the strip support ring is located below the slitting saw blade, and the strip support ring is connected to the fixing plate through fixing bolts.

[0008] Furthermore, the inner ring of the retaining ring is located above the hexagon socket screw, and the top surface of the hexagon socket screw abuts against the inner wall of the retaining ring.

[0009] Furthermore, a countersunk threaded hole is provided inside the integrated tube at the hexagon socket screw connection position, and the bottom end of the hexagon socket screw abuts against the outer wall of the main shaft.

[0010] Furthermore, a threaded hole is provided on the side of the integral tube at one side of the fixing claw, and there are multiple fixing claws, which are evenly arranged circumferentially on the retaining ring.

[0011] Furthermore, the cross section of the main shaft is a regular hexagon, and a regular hexagonal hole matching the main shaft is provided in the center of the slitting saw blade and the integrated tube.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The utility model realizes that when the lithium battery combined current collector roll film slitting device is used, the main shaft, the slitting saw blade and the retaining ring are provided, and the main shaft is driven by the driving motor to rotate, thereby driving the slitting saw blade fixed on the main shaft to rotate and slitting the roll film. When the slitting width needs to be adjusted, the position of the slitting saw blade on the main shaft can be adjusted in advance according to the required roll film width before slitting, and the slitting saw blade and the main shaft are fixed by the abutment of the hexagonal screw, which cooperates with the regular hexagonal structure of the main shaft to ensure that the slitting saw blade is firmly connected and the position of the slitting saw blade on the main shaft can be freely adjusted, thereby being suitable for slitting roll films of different widths.

[0014] In addition, when the slitting saw blade is fixed, the retaining ring can be used to abut and fix the top of the hexagon socket screw to prevent the hexagon socket screw from loosening. The retaining ring is fixed to the integrated tube through the cooperation of the fixing claw and the locking screw, ensuring the stable connection of the slitting saw blade.

[0015] At the same time, the strip support ring that matches the slitting saw blade can also be adjusted on the fixed plate to cooperate with the slitting saw blade to support the film rolls on both sides of the slitting saw blade to ensure smooth slitting.

[0016] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional diagram of a lithium battery composite current collector film slitting device according to the present invention;

[0018] Figure 2 for Figure 1 A in the middle is an enlarged structural diagram;

[0019] Figure 3 This is a top view of a lithium battery composite current collector film slitting device according to the present invention;

[0020] Figure 4 for Figure 3 The enlarged structural diagram at B in the middle;

[0021] Figure 5 This is a three-dimensional diagram from another perspective of a lithium battery composite current collector roll film slitting device of the present invention.

[0022] In the figure: 1. Film roll bearing seat; 2. Collector film roll; 3. Spindle bearing seat; 4. Drive motor; 5. Spindle; 6. Slitting saw blade; 7. Integrated tube; 8. Retaining ring; 9. Fixing claw; 10. Locking screw; 11. Hexagon socket screw; 12. Strip support ring; 13. Fixing bolt; 14. Fixing plate; 15. Strip groove. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] See also Figure 1-Figure 5The utility model provides a technical solution: a lithium battery composite current collector roll film slitting device, comprising: a roll film bearing seat 1, a current collector roll film 2 and a main shaft bearing seat 3, there are two roll film bearing seats 1, a current collector roll film 2 is rotatably provided between the two roll film bearing seats 1, there are two main shaft bearing seats 3, a main shaft 5 is rotatably provided between the two main shaft bearing seats 3, a slitting saw blade 6 is provided on the outer wall of the main shaft 5, an integrated tube 7 is fixed on both sides of the middle part of the slitting saw blade 6, an inner hexagon screw 11 is provided inside the integrated tube 7, a retaining ring 8 is provided on the outside of the integrated tube 7, a fixing claw 9 is provided on the inner wall of the middle part of the retaining ring 8, a locking screw 10 is provided between the fixing claw 9 and the integrated tube 7, a driving motor 4 is provided on the outer wall of the main shaft bearing seat 3 on one side, and the output shaft of the driving motor 4 is fixed to one end of the main shaft 5.

[0025] A fixing plate 14 is provided in the middle of the main shaft bearing seat 3. A strip groove 15 is provided in the middle of the fixing plate 14. A strip support ring 12 is provided above the fixing plate 14. Fixing bolts 13 are provided on both sides of the bottom of the strip support ring 12. The strip support ring 12 is located below the slitting saw blade 6 and is connected to the fixing plate 14 via the fixing bolts 13. The strip support ring 12, which cooperates with the slitting saw blade 6, can also be adjusted on the fixing plate 14. In cooperation with the slitting saw blade 6, it supports the film rolls on both sides of the slitting saw blade 6 to ensure smooth slitting.

[0026] The inner ring of retaining ring 8 is positioned above hexagon socket screw 11, with the top surface of hexagon socket screw 11 abutting against the inner wall of retaining ring 8. A countersunk threaded hole is provided within the integrated tube 7, where the hexagon socket screw 11 connects. The bottom end of the hexagon socket screw 11 abuts against the outer wall of the spindle 5. When securing the slitting saw blade 6, retaining ring 8 abuts against the top of the hexagon socket screw 11, preventing it from loosening. The retaining claw 9 and locking screw 10 cooperate to secure retaining ring 8 to the integrated tube 7, ensuring a stable connection for the slitting saw blade 6.

[0027] A threaded hole is opened on the side of the integral tube 7 on one side of the fixing claw 9 . There are multiple fixing claws 9 , and the multiple fixing claws 9 are evenly arranged circumferentially on the retaining ring 8 .

[0028] The cross-section of the main shaft 5 is a regular hexagon, and a regular hexagonal hole that matches the main shaft 5 is opened in the center of the slitting saw blade 6 and the integrated tube 7. The hexagonal main shaft 5 and the hexagonal hole can prevent the slitting saw blade 6 from rotating relative to the main shaft 5, reduce the force on the hexagon socket screw 11, and improve the stability of the connection of the slitting saw blade 6.

[0029] When the lithium battery combined current collector roll film slitting device is in use, the main shaft 5 is driven to rotate by the driving motor 4, thereby driving the slitting saw blade 6 fixed on the main shaft 5 to rotate and slitting the roll film. When the slitting width needs to be adjusted, the position of the slitting saw blade 6 on the main shaft 5 can be adjusted in advance according to the required roll film width before slitting. The slitting saw blade 6 and the main shaft 5 are fixed by the abutment of the hexagonal screw 11. The regular hexagonal structure of the main shaft 5 can ensure that the slitting saw blade 6 is firmly connected and the position of the slitting saw blade 6 on the main shaft 5 can be freely adjusted, thereby being suitable for slitting roll films of different widths.

[0030] In addition, when the slitting saw blade 6 is fixed, the retaining ring 8 can be used to abut and fix the top of the hexagon socket screw 11 to prevent the hexagon socket screw 11 from loosening. The retaining ring 8 is fixed to the integrated tube 7 through the cooperation of the fixing claw 9 and the locking screw 10, ensuring the stable connection of the slitting saw blade 6.

[0031] At the same time, the strip support ring 12 that cooperates with the slitting saw blade 6 can also be adjusted on the fixed plate 14 to cooperate with the slitting saw blade 6 to support the roll film on both sides of the slitting saw blade 6 to ensure smooth slitting.

[0032] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art.

[0033] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

Claims

1. A lithium battery composite current collector film slitting device, comprising: The invention relates to a film roll bearing seat (1), a fluid collector film roll (2) and a main shaft bearing seat (3), characterized in that: there are two film roll bearing seats (1), a fluid collector film roll (2) is provided between the two film roll bearing seats (1), there are two main shaft bearing seats (3), a main shaft (5) is provided between the two main shaft bearing seats (3), a slitting saw blade (6) is provided on the outer wall of the main shaft (5), an integrated tube (7) is provided on both sides of the middle of the slitting saw blade (6), a hexagon socket screw (11) is provided inside the integrated tube (7), a retaining ring (8) is provided on the outer side of the integrated tube (7), a fixing claw (9) is provided on the inner wall of the middle of the retaining ring (8), a locking screw (10) is provided between the fixing claw (9) and the integrated tube (7), a driving motor (4) is provided on the outer wall of the main shaft bearing seat (3) on one side, and the output shaft of the driving motor (4) is fixed to one end of the main shaft (5).

2. The lithium battery composite current collector roll film slitting device according to claim 1, characterized in that: A fixing plate (14) is provided between the middle parts of the spindle bearing seat (3), a strip groove (15) is provided in the middle part of the fixing plate (14), a strip support ring (12) is provided above the fixing plate (14), fixing bolts (13) are provided on both sides of the bottom of the strip support ring (12), the strip support ring (12) is located below the slitting saw blade (6), and the strip support ring (12) is connected to the fixing plate (14) through the fixing bolts (13).

3. The lithium battery composite current collector film slitting device according to claim 1, characterized in that: The inner ring of the retaining ring (8) is located above the hexagon socket screw (11), and the top surface of the hexagon socket screw (11) abuts against the inner wall of the retaining ring (8).

4. The lithium battery composite current collector film slitting device according to claim 3, characterized in that: A countersunk threaded hole is provided inside the integrated tube (7) at the connection position of the hexagon socket screw (11), and the bottom end of the hexagon socket screw (11) abuts against the outer wall of the main shaft (5).

5. The lithium battery composite current collector film slitting device according to claim 3, characterized in that: A threaded hole is provided on the side of the integral tube (7) on one side of the fixing claw (9), and there are a plurality of fixing claws (9), which are evenly arranged in the circumferential direction on the retaining ring (8).

6. The lithium battery composite current collector film slitting device according to claim 1, characterized in that: The cross section of the main shaft (5) is a regular hexagon, and a regular hexagonal hole matching the main shaft (5) is provided in the center of the slitting saw blade (6) and the integrated tube (7).

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