Battery diaphragm cutting device

Abstract

The utility model discloses a battery diaphragm cutting device, which relates to the field of battery diaphragm cutting and comprises two fixing plates, an upper rotating roller and a lower rotating roller are rotatably mounted between the two fixing plates, and an upper cutting knife and a lower cutting knife are connected to the inner sides of the two fixing plates in an up-down sliding manner. The upper cutting knife and the lower cutting knife act synchronously through a synchronizing mechanism, the upper rotating roller and the lower rotating roller rotate synchronously in the opposite directions through a rotating mechanism, and the rotating upper rotating roller and the rotating lower rotating roller are used for conveying diaphragms outwards. And the upper cutting knife and the lower cutting knife which act synchronously are used for cutting the conveyed diaphragm. By arranging the synchronizing mechanism, the upper cutting knife and the lower cutting knife, when the diaphragm is cut, the cut position of the diaphragm is stressed in a balanced mode, one-way acting force cannot be generated, and therefore the situation that the cut position is bent downwards due to unbalanced stress is avoided.

Description

Technical Field

[0001] The utility model relates to the field of battery diaphragm segmentation, in particular to a battery diaphragm segmentation device. Background Art

[0002] The function of the diaphragm in the battery is to separate the positive electrode diaphragm from the negative electrode diaphragm to prevent the positive and negative electrons from passing freely.

[0003] The diaphragm that has been divided into narrow rolls needs to be divided into sheets in the subsequent division, so as to facilitate the winding with the positive and negative electrode membranes to form the battery cells of the cylindrical battery.

[0004] In the prior art, when a narrow rolled diaphragm is split, the diaphragm is generally cut from top to bottom by driving a cutting blade. This cutting method causes the diaphragm to only receive force from above when being cut, and the cut position is prone to form a downward curl. This method is not conducive to the subsequent rolling of the battery cell and is prone to defective products. Utility Model Content

[0005] The purpose of the utility model is to provide a battery membrane splitting device in order to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a battery membrane cutting device, comprising two No. 1 fixed plates, an upper rotating roller and a lower rotating roller are rotatably installed between the two No. 1 fixed plates, an upper cutting knife and a lower cutting knife are slidably connected to the inner sides of the two No. 1 fixed plates, the upper cutting knife and the lower cutting knife are synchronously moved by a synchronous mechanism, the upper rotating roller and the lower rotating roller are synchronously rotated toward each other by a rotating mechanism, the rotating upper rotating roller and the lower rotating roller are used to transport the diaphragm outward, and the synchronously moving upper cutting knife and the lower cutting knife are used to split the transported diaphragm;

[0007] A driving mechanism for driving the upper cutting knife to move up and down is installed on the top of the upper cutting knife.

[0008] As a further solution of the utility model: the rotating mechanism includes a rotating motor connected to one end of the lower rotating roller, and the other ends of the upper rotating roller and the lower rotating roller are respectively connected to an upper gear and a lower gear through a connecting shaft, and the upper gear is meshed with the lower gear.

[0009] As a further solution of the utility model: the driving mechanism includes a No. 2 fixing plate fixedly installed on the upper inner side of the two No. 1 fixing plates, a driving motor is fixedly installed on the top of the No. 2 fixing plate, an output end of the driving motor is connected to a cam, a fixing ear is fixedly installed on the top of the upper cutting knife, a roller is rotatably installed on the inner side of the fixing ear, and the outer periphery of the roller is in contact with the outer periphery of the cam.

[0010] As a further solution of the utility model: the sliding rods at both ends of the upper cutting knife and the lower cutting knife have sliding grooves inside the sliding rods for the sliding rods to slide downward.

[0011] As a further solution of the utility model: the synchronization mechanism includes a lifting plate fixedly connected to one end of the sliding rod and a fixed plate fixedly connected to the outer side of the first fixed plate, the inner wall of the fixed plate is slidably connected to a guide rod, one end of the guide rod is fixedly connected to the lifting plate, and the other end of the guide rod is integrally formed with an anti-slip plate, a spring is fixedly installed between the lower cutting knife and the fixed plate, and the spring is sleeved with the guide rod;

[0012] The end surfaces of the two lifting plates close to each other are integrally formed with staggered tooth plates, and the side of the two tooth plates close to each other is formed with tooth blocks. A reversing gear meshing with the tooth block is rotatably installed on the outer side of the first fixed plate.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. By setting a synchronous mechanism and an upper cutting knife and a lower cutting knife, when the diaphragm is cut, the force at the cut position of the diaphragm is balanced, and no unidirectional force is generated, thereby avoiding the downward bending of the cut position due to uneven force. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a structural schematic diagram of another viewing angle of the utility model;

[0017] Figure 3 For the utility model Figure 2 A partial enlarged view of the middle part;

[0018] Figure 4 This is a schematic diagram of the structure of the synchronization mechanism of the utility model;

[0019] Figure 5 It is a schematic structural diagram of the upper cutting knife and the lower cutting knife of the utility model, wherein (a) is a front view of the upper cutting knife and the lower cutting knife, and (b) is a side view of the upper cutting knife and the lower cutting knife.

[0020] In the figure: 1. Fixed plate No. 1; 2. Upper rotating roller; 3. Lower rotating roller; 4. Rotating motor; 5. Diaphragm; 6. Fixed plate No. 2; 7. Driving motor; 8. Cam; 9. Upper cutting knife; 10. Lower cutting knife; 11. Sliding rod; 12. Sliding groove; 13. Lifting plate; 14. Upper gear; 15. Lower gear; 16. Fixed ear; 17. Roller; 18. Guide rod; 19. Anti-slip plate; 20. Mounting plate; 21. Spring; 22. Tooth plate; 23. Tooth block; 24. Reversing gear. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1 to Figure 5 In an embodiment of the utility model, a battery membrane cutting device includes two No. 1 fixed plates 1, an upper rotating roller 2 and a lower rotating roller 3 are rotatably installed between the two No. 1 fixed plates 1, an upper cutting knife 9 and a lower cutting knife 10 are slidably connected to the inner sides of the two No. 1 fixed plates 1 up and down, the upper cutting knife 9 and the lower cutting knife 10 are synchronously moved by a synchronous mechanism, the upper rotating roller 2 and the lower rotating roller 3 rotate synchronously toward each other through a rotating mechanism, the rotating upper rotating roller 2 and the lower rotating roller 3 are used to transport the diaphragm 5 outward, and the synchronously moving upper cutting knife 9 and the lower cutting knife 10 are used to split the transported diaphragm 5; a driving mechanism for driving the upper cutting knife 9 to move up and down is installed on the top of the upper cutting knife 9.

[0023] In this embodiment: first, the rotating mechanism is started, and the rotating mechanism drives the upper rotating roller 2 and the lower rotating roller 3 to rotate in opposite directions, so as to convey the diaphragm 5 toward the upper cutting knife 9 and the lower cutting knife 10. The number of revolutions of the rotating mechanism is set by the controller, and the total length of the number of revolutions is equal to the length of the diaphragm 5 conveyed. After the diaphragm 5 is conveyed by the preset length, the controller controls the driving mechanism to stop running, and at this time, the controller controls the driving mechanism to run, and the driving mechanism rotates one circle, and the driving mechanism drives the upper cutting knife 9 to move downward, and the upper cutting knife 9 drives the lower cutting knife 10 to move upward through the synchronization mechanism, so as to cut the diaphragm 5 to a fixed length;

[0024] The controller controls the upper rotating roller 2 and the lower rotating roller 3 by means of an encoder, and monitors the rotation number of the driving mechanism by means of another encoder.

[0025] Please refer to Figure 1 and Figure 2 The rotating mechanism includes a rotating motor 4 connected to one end of the lower rotating roller 3, and the other ends of the upper rotating roller 2 and the lower rotating roller 3 are respectively connected to an upper gear 14 and a lower gear 15 through a connecting shaft, and the upper gear 14 and the lower gear 15 are meshed.

[0026] In this embodiment: the starting of the rotating motor 4 drives the lower rotating roller 3 to rotate, the lower rotating roller 3 drives the lower gear 15 connected to it to rotate through the connecting shaft, the lower gear 15 drives the upper gear 14 meshing with it to rotate, and the upper gear 14 drives the upper rotating roller 2 connected to it to rotate through the connecting shaft. At this time, the upper rotating roller 2 and the lower rotating roller 3 rotate synchronously in opposite directions, thereby conveying the diaphragm 5.

[0027] Please refer to Figure 2 and Figure 3 The driving mechanism includes a No. 2 fixing plate 6 fixedly installed on the inner side of the two No. 1 fixing plates 1, a driving motor 7 is fixedly installed on the top of the No. 2 fixing plate 6, and a cam 8 is connected to the output end of the driving motor 7. A fixing ear 16 is fixedly installed on the top of the upper cutting knife 9, and a roller 17 is rotatably installed on the inner side of the fixing ear 16, and the outer periphery of the roller 17 contacts the outer periphery of the cam 8.

[0028] In this embodiment: when the rotating mechanism stops running, the drive motor 7 runs to drive the cam 8 to rotate. Since the cam 8 has a highest point and a lowest point during the rotation process, the drive motor 7 drives the cam 8 to rotate from the highest point to the lowest point. At this time, the cam 8 squeezes the roller 17, and the roller 17 drives the upper cutting knife 9 to move downward through the fixed ear 16. The existence of the roller 17 can reduce the friction of the cam 8 during the rotation process. The upper cutting knife 9 moving downward drives the lower cutting knife 10 to move upward synchronously through the synchronization mechanism, thereby cutting the diaphragm 5.

[0029] Please refer to Figure 2 , Figure 4 and Figure 5 , the sliding rods 11 at both ends of the upper cutting knife 9 and the lower cutting knife 10, the sliding rods 11 are provided with sliding grooves 12 for the sliding rods 11 to slide downward, the synchronization mechanism includes a lifting plate 13 fixedly connected to one end of the sliding rod 11 and a mounting plate 20 fixedly connected to the outer side of the No. 1 fixed plate 1, the inner wall of the mounting plate 20 is connected with a guide rod 18 for sliding up and down, one end of the guide rod 18 is fixedly connected to the lifting plate 13, and the other end of the guide rod 18 is integrally formed with an anti-slip plate 19, a spring 21 is fixedly installed between the lower cutting knife 10 and the mounting plate 20, and the spring 21 is sleeved with the guide rod 18; the end surfaces of the two lifting plates 13 close to each other are integrally formed with staggered tooth plates 22, and the side of the two tooth plates 22 close to each other is formed with tooth blocks 23, and the outer side of the No. 1 fixed plate 1 is rotatably installed with a reversing gear 24 meshing with the tooth blocks 23.

[0030] In this embodiment: during the downward movement of the upper cutting knife 9, the upper cutting knife 9 drives the sliding rod 11 connected thereto to move downward along the sliding groove 12, and the sliding rod 11 synchronously drives the lifting plate 13 to move downward, and the lifting plate 13 synchronously drives the guide rod 18 and the toothed plate 22 to move downward. At this time, the guide rod 18 and the mounting plate 20 slide relatively, and the spring 21 is compressed. The toothed plate 22 moving downward drives the tooth block 23 to drive the reversing gear 24 to rotate. The rotating reversing gear 24 drives another toothed plate 22 to move upward through another set of tooth blocks 23. The toothed plate 22 moving upward drives another lifting plate 13 connected thereto to move upward, and the lifting plate 13 moving upward drives another set of sliding rods 11 and the guide rod 18 connected thereto to move upward, thereby driving the lower cutting knife 10 to move upward;

[0031] The upper cutting blade 9 and the lower cutting blade 10 move toward each other to achieve smooth cutting of the diaphragm 5;

[0032] When the cam 8 moves from the lowest point to the highest point again, the compressed spring 21 is reset, driving the upper cutting knife 9 and the lower cutting knife 10 to reset.

[0033] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A battery membrane splitting device, comprising two No. 1 fixed plates (1), an upper rotating roller (2) and a lower rotating roller (3) are rotatably mounted between the two No. 1 fixed plates (1), characterized in that: An upper cutting knife (9) and a lower cutting knife (10) are slidably connected to the inner sides of the two No. 1 fixed plates (1) in an upward and downward manner. The upper cutting knife (9) and the lower cutting knife (10) are synchronously moved by a synchronous mechanism. The upper rotating roller (2) and the lower rotating roller (3) are synchronously rotated toward each other by a rotating mechanism. The rotating upper rotating roller (2) and the lower rotating roller (3) are used to transport the diaphragm (5) outward. The synchronously moving upper cutting knife (9) and the lower cutting knife (10) are used to split the transported diaphragm (5). A driving mechanism for driving the upper cutting knife (9) to move up and down is installed on the top of the upper cutting knife (9).

2. A battery membrane splitting device according to claim 1, characterized in that: The rotating mechanism comprises a rotating motor (4) connected to one end of the lower rotating roller (3); the other ends of the upper rotating roller (2) and the lower rotating roller (3) are respectively connected to an upper gear (14) and a lower gear (15) via a connecting shaft; the upper gear (14) and the lower gear (15) are meshed with each other.

3. A battery membrane separation device according to claim 2, characterized in that: The driving mechanism comprises a second fixing plate (6) fixedly mounted on the inner side and above the two first fixing plates (1); a driving motor (7) is fixedly mounted on the top of the second fixing plate (6); an output end of the driving motor (7) is connected to a cam (8); a fixing ear (16) is fixedly mounted on the top of the upper cutting knife (9); a roller (17) is rotatably mounted on the inner side of the fixing ear (16); and an outer periphery of the roller (17) contacts an outer periphery of the cam (8).

4. A battery membrane separation device according to claim 1, characterized in that: The sliding rods (11) at both ends of the upper cutting knife (9) and the lower cutting knife (10) are provided with sliding grooves (12) inside the sliding rods (11) for the sliding rods (11) to slide downwards.

5. A battery membrane separation device according to claim 4, characterized in that: The synchronization mechanism comprises a lifting plate (13) fixedly connected to one end of the sliding rod (11) and a fixed plate (20) fixedly connected to the outer side of the first fixed plate (1); the inner wall of the fixed plate (20) is slidably connected to a guide rod (18) up and down; one end of the guide rod (18) is fixedly connected to the lifting plate (13); and the other end of the guide rod (18) is integrally formed with an anti-slip plate (19); a spring (21) is fixedly installed between the lower cutting knife (10) and the fixed plate (20); and the spring (21) is sleeved with the guide rod (18); The end surfaces of the two lifting plates (13) close to each other are integrally formed with staggered tooth plates (22), the sides of the two tooth plates (22) close to each other are formed with tooth blocks (23), and the outer side of the first fixed plate (1) is rotatably mounted with a reversing gear (24) meshing with the tooth block (23).

Images