A cylindrical lithium battery full-ear flattening machine

Abstract

The present invention discloses a cylindrical lithium battery full-ear flattening machine, including a frame, a main shaft, etc., and also includes a battery turntable, a flattening turntable, a pushing component, and a plurality of battery engaging stations and flattening components that are evenly distributed, equal in number and one-to-one corresponding; when working, the main shaft drives the battery turntable and the flattening turntable to rotate synchronously, and each flattening component will rotate and revolve around the main shaft. When the lithium battery enters the battery engaging station and is driven by the battery turntable to rotate continuously, the one-to-one corresponding flattening components will move to fit the end of the lithium battery and rotate to flatten the full-ear, and then move away from the end of the lithium battery. At this time, the lithium battery with the full-ear flattened will continue to rotate with the battery turntable until it is driven away from the battery engaging station. In the above-mentioned manufacturing process, since the flattening action of the full-ear at the end of the lithium battery is completed continuously and automatically, the production efficiency is higher, and the manufacturing process is simpler and labor-saving, thereby better meeting the needs of automated assembly line production of lithium batteries.

Description

Technical Field

[0001] The invention relates to a flattening machine for automatically flattening a full-pole ear at the end of a lithium battery, namely a full-pole ear flattening machine for a cylindrical lithium battery. Background Art

[0002] With the increasing requirements for the safe use performance of lithium batteries, the manufacturing methods and processes of lithium batteries have also changed accordingly. Lithium batteries manufactured using the full-ear manufacturing method can better reduce the safety risks of spontaneous combustion or explosion caused by excessive current concentration. However, the full-ear protruding from the end of the lithium battery is manually flattened by manual rotation. Even if there are production machines that can be used to flatten the full-ear, most of them use intermittent, single-station semi-automatic manufacturing methods. This manufacturing method is not only cumbersome and laborious in the manufacturing process, but also extremely low in production efficiency. It has become increasingly difficult to meet the needs of automated assembly line production of lithium batteries. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a cylindrical lithium battery full-ear flattening machine that can continuously and automatically flatten the entire ear at the end of the lithium battery and can better meet the needs of automated assembly line production of lithium batteries.

[0004] The technical problem of the present invention is achieved through the following technical solutions:

[0005] A cylindrical lithium battery full-ear flattening machine, comprising a frame and a main shaft horizontally rotatably mounted on the frame, the main shaft is provided with a battery turntable and a flattening turntable with a transmission set, the outer circumference of the battery turntable is provided with a plurality of battery clamping stations evenly distributed in the circumference, the outer circumference of the flattening turntable is provided with a plurality of flattening components evenly distributed in the circumference and equal to and corresponding to the battery clamping stations, each flattening component is connected to the main shaft by power transmission, and the rear end of each flattening component is provided with a driving mechanism to push the flattening component to move axially The driving component is a reciprocating driving component; the rotation of the main shaft drives the battery turntable and the flattening turntable to rotate synchronously, each flattening component is driven by the flattening turntable to form a revolution around the main shaft, and is also driven by the main shaft to rotate synchronously; the lithium battery enters the battery engaging station and is driven to rotate by the battery turntable, and the corresponding flattening components move to fit the end of the lithium battery and rotate to flatten the full-pole ears, and then move away from the end of the lithium battery. The lithium battery with the full-pole ears flattened is driven and separated from the battery engaging station as the battery turntable continues to rotate.

[0006] Each of the flattening components comprises a moving shaft which is axially reciprocatingly mounted on the outer circumference of a flattening turntable, a pushing component is provided at the rear end of the moving shaft, a rotating shaft which is coaxially rotatably mounted at the front end of the moving shaft, and a flattening head is provided at the front end of the rotating shaft; the pushing component drives the moving shaft and the rotating shaft to make axial reciprocating movements; the rotating shaft is connected to the main shaft by power transmission; the flattening head moves to fit the end of the lithium battery and rotates to flatten the entire pole ear.

[0007] A belt assembly is provided between the rotating shaft and the main shaft for power transmission connection, and the rotating shaft is driven by the main shaft to rotate via the belt assembly.

[0008] The moving shaft of each flattening assembly is installed on the outer circumferential surface of the flattening rotating disk through a shaft sleeve, and the moving shaft performs axial reciprocating movement in the shaft sleeve.

[0009] The pushing assembly includes a guide wheel movably mounted on the main shaft and fixed to the frame, a guide ring groove coaxial with the guide wheel is provided on the outer circumferential surface of the guide wheel, and the guide ring groove has an inner recessed portion close to the battery turntable, and a positioning guide shaft is correspondingly provided at the rear end of the movable shaft and fitted in the guide ring groove; the main shaft rotates to drive the flattening turntable to drive the flattening assembly to revolve around the main shaft, the positioning guide shaft rolls along the guide ring groove, and the flattening head at the front end of the rotating shaft disengages from the end of the lithium battery; the positioning guide shaft rolls to the inner recessed portion of the guide ring groove, and pushes the movable shaft and the rotating shaft to move axially together close to the battery turntable, and the flattening head at the front end of the rotating shaft fits the end of the lithium battery and rotates to flatten the entire pole ear.

[0010] The one-to-one corresponding flattening components and the battery engaging stations are located on the same axis, and the same axis is parallel to the axis of the main shaft.

[0011] A pressing belt is provided above the battery turntable. The lithium battery enters the battery clamping station and has its full pole ears flattened at the ends. The pressing belt always presses and positions the lithium battery in the battery clamping station until the full pole ears at the ends of the lithium battery are flattened and the pressing belt leaves, and the lithium battery is separated from the battery clamping station.

[0012] The pressing belt is supported by a plurality of supporting wheels installed on the frame and rotates. An arc-shaped pressing belt portion is provided at the lower part of the pressing belt, which matches the shape of the battery turntable and presses and positions the lithium battery in the battery clamping station. A belt tensioning rod is provided above the pressing belt.

[0013] The pressing belt presses the lithium battery in the positioning battery clamping station through the arc-shaped pressing belt part, and the main shaft rotates and drives the pressing belt to rotate through the arc-shaped pressing belt part.

[0014] There are two flattening turntables, which are respectively located on both sides of the battery turntable. A number of flattening components are evenly distributed on the outer circumference of the flattening turntable on each side, and the number is equal to and one-to-one corresponds to the battery engaging positions. The main shaft rotates to drive the battery turntable and the flattening turntables on both sides to rotate synchronously. The lithium battery enters the battery engaging position and is driven to rotate by the battery turntable. The flattening components on both sides corresponding to each other move synchronously to fit the two ends of the lithium battery and rotate to flatten the entire pole ears, and then move synchronously to separate from the two ends of the lithium battery.

[0015] Compared with the prior art, the present invention mainly designs a flattening machine that can continuously and automatically flatten the full-ear end of a lithium battery. Its structure includes a frame and a horizontally rotatably mounted main shaft, etc., mainly a battery turntable and a flattening turntable with a transmission set are arranged on the main shaft, a plurality of battery engaging stations evenly distributed in the circumference are arranged on the outer circumference of the battery turntable, a plurality of flattening components evenly distributed in the circumference and equal to and corresponding to the battery engaging stations are arranged on the outer circumference of the flattening turntable, each flattening component is connected to the main shaft by power transmission, and the rear end of each flattening component is provided with The pusher assembly pushes the flattening assembly to make axial reciprocating movement; when working, the main shaft rotates to drive the battery turntable and the flattening turntable to rotate synchronously, and each flattening assembly will be driven by the flattening turntable to form an orbit around the main shaft, and at the same time driven by the main shaft to rotate synchronously. When the lithium battery enters the battery engagement station and is driven by the battery turntable to rotate continuously, the corresponding flattening assemblies will move to fit the end of the lithium battery and rotate to flatten the full pole ear, and then move away from the end of the lithium battery. At this time, the lithium battery with the full pole ear flattened will continue to rotate with the battery turntable until it is driven to leave the battery engagement station. In the above manufacturing process, since the flattening action of the full pole ear at the end of the lithium battery is completed continuously and automatically, the production efficiency is higher, and the manufacturing process is simpler and more labor-saving, thereby better meeting the needs of automated assembly line production of lithium batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the cross-sectional structure of the present invention.

[0017] Figure 2 for Figure 1 Left view of .

[0018] Figure 3 It is a structural schematic diagram of the flattening component.

[0019] Figure 4 for Figure 3 A-A section view.

[0020] Figure 5 Schematic diagram of the structure of the guide wheel. DETAILED DESCRIPTION

[0021] The embodiments of the present invention will be described in detail below with reference to the above-mentioned drawings.

[0022] like Figure 1~Figure 5 As shown, 1. frame, 11. bottom plate, 12. fixed plate, 13. feed trough, 14. discharge trough, 2. main shaft, 3. battery turntable, 31. battery engaging station, 4. kneading turntable, 5. kneading assembly, 51. moving shaft, 52. rotating shaft, 53. kneading head, 54. bushing, 55. belt assembly, 6. pushing assembly, 61. guide wheel, 62. positioning guide shaft, 63. wheel seat, 64. guide ring groove, 641. inner concave part, 7. lithium battery, 8. pressing belt, 81. arc-shaped pressing belt part, 82. supporting wheel, 83. tensioning rod, 9. motor, 91. gear set, 10. bearing.

[0023] A cylindrical lithium battery full-ear flattening machine, such as Figure 1 , Figure 2 As shown, it mainly involves a production machine that can continuously and automatically complete the flattening of the ends of lithium batteries, especially the full-ear tabs at both ends of cylindrical lithium batteries. Its structure mainly includes a frame 1, a main shaft 2, a battery turntable 3, a flattening turntable 4, a flattening component 5, a pushing component 6 and a pressing belt 8.

[0024] The frame 1 adopts a cabinet-type mounting frame, and both ends of the main shaft 2 are horizontally supported on the fixed plates 12 on both sides through bearings. The fixed plates on both sides are also fixed on the bottom plate 11 on the top of the frame 1, so the main shaft 2 can be horizontally rotatably installed on the frame 1.

[0025] A motor 9 is fixedly mounted on one of the side fixing plates 12 , and a gear set 91 for meshing transmission is arranged between the motor and the end of the main shaft 2 , so that the motor 9 can drive the main shaft 2 to rotate via the gear set 91 .

[0026] The main shaft 2 is provided with a battery turntable 3 and a flattening turntable 4 of a transmission set. In this embodiment, two flattening turntables 4 are designed, and the two flattening turntables are respectively located on both sides of the battery turntable 3 to correspond to the pole ears at both ends of the cylindrical lithium battery for flattening. Then, the battery turntable 3 and the two flattening turntables 4 will be driven by the main shaft 2 to rotate synchronously; a plurality of battery engaging stations 31 evenly distributed around the circumference are provided on the outer circumference of the battery turntable 3, and a plurality of flattening components 5 evenly distributed around the circumference are provided on the outer circumference of the flattening turntable 4 on each side, and the flattening components 5 on the flattening turntables 4 on both sides are equal to the number of the battery engaging stations 31 and correspond one to one, that is, the flattening components 5 on the flattening turntables 4 on both sides correspond one to one to the battery engaging stations 31 on the battery turntable 3 and are exactly on the same axis, and the same axis is parallel to the axis of the main shaft 2.

[0027] At the same time, each flattening component 5 is connected to the main shaft 2 by power transmission, and a driving component 6 for driving the flattening component to make axial reciprocating movement is provided at the rear end of each flattening component 5.

[0028] Wherein, each flattening component 5 is as follows Figure 3 , Figure 4 As shown, its structure includes a moving shaft 51 and a rotating shaft 52 coaxially mounted at the front end of the moving shaft. The moving shaft 51 is mainly mounted on the outer circumferential surface of the kneading turntable 4 through a sleeve 54, so the moving shaft 51 can make axial reciprocating movement in the sleeve 54, and the driving component 6 is installed at the rear end of the moving shaft 51 and provides a driving force for the moving shaft 51 to make axial reciprocating movement. The rotating shaft 52 is rotated and inserted into the front end of the moving shaft 51 through the bearing 10 installed at the rear end to form a coaxial rotation. A fixedly mounted kneading head 53 is also provided at the front end of the rotating shaft 52, that is, the rotating shaft 52 and the kneading head 53 will rotate together, and the rotating shaft 52 and the main shaft 2 are connected for power transmission through a belt component 55.

[0029] Therefore, the rotation of the main shaft 2 will drive the battery turntable 3 and the kneading turntables 4 on both sides to rotate synchronously, and each kneading component 5 will be driven by the kneading turntable 4 to revolve around the main shaft 2; at the same time, the main shaft 2 will also drive the rotating shaft 52 and the kneading head 53 of the kneading component 5 to rotate synchronously through the belt assembly 55.

[0030] The pushing assembly 6 comprises Figure 5 The guide wheel 61 shown is movably mounted on the main shaft 2 via the wheel seat 63 and is fixed to the frame 1, that is, the rotation of the main shaft 2 will not drive the wheel seat 63 and the guide wheel 61 to rotate synchronously, and the installation position of the guide wheel 61 on the frame 1 is fixed and unchanged. A guide ring groove 64 coaxial with the guide wheel is also provided on the outer circumferential surface of the guide wheel 61. Most of the guide ring grooves are straight grooves located on the coaxial line, and only one place is set as an inner recess 641 close to the battery turntable 3. Correspondingly, a positioning guide shaft 62 is provided at the rear end of the movable shaft 51 to fit in the guide ring groove 64.

[0031] In this way, when the main shaft 2 rotates to drive the flattening turntable 4 to drive the flattening assembly 5 to revolve around the main shaft 2, the positioning guide shaft 62 will roll along the guide ring groove 64. At this time, the flattening head 53 at the front end of the rotating shaft 52 is separated from the end of the lithium battery 7, that is, the positioning guide shaft 62 rolls along the straight groove of the guide ring groove 64, and a certain distance is maintained between the flattening head 53 and the end of the lithium battery 7. In this embodiment, the revolution of several flattening assemblies 5 will drive the positioning guide shaft 62 to roll along the guide ring groove 64 around the guide wheel 61. All the flattening heads 53 keep a certain distance from the end of the lithium battery 7; until the positioning guide shaft 62 of a certain flattening component 5 rolls to the inner recessed portion 641 of the guide ring groove 64, the change in the shape of the ring groove will push the positioning guide shaft 62 to deviate from the coaxial line and approach the battery turntable 3, thereby driving the moving shaft 51 and the rotating shaft 52 to move axially together and approach the battery turntable 3. At this time, the flattening head 53 at the front end of the rotating shaft 52 can directly fit the end of the lithium battery 7, and be driven by the rotation of the rotating shaft 52 to flatten the entire pole ear at the end of the lithium battery 7.

[0032] According to the above structural design, the working process of the flattening machine is as follows: when the supporting conveying equipment for producing lithium batteries 7 sequentially conveys lithium batteries with full pole ears at both ends to the flattening machine, the lithium battery 7 enters the battery clamping station 31 and is pressed and positioned by the pressing belt 8, and then it will be driven to rotate by the battery turntable 3, that is, with the continuous rotation of the battery turntable 3, the lithium batteries 7 arranged in sequence and conveyed will enter the battery clamping station 31 one by one through the feeding trough 13 and be pressed and positioned. At this time, in the corresponding flattening components 5 on the flattening turntables 4 on both sides, the positioning guide shafts 62 of the two pushing components 6 just roll to the inner recessed part 641 of the guide ring groove 64, and then push the two flattening components 5 to move axially at the same time close to the battery turntable 3, that is, the two flattening components 5 move axially relative to each other at the same time, and make the two flattening heads 53 just fit on the two ends of the lithium battery 7. At this time, because the main shaft 2 drives the battery turntable 3 and the two flattening turntables 4 always keep rotating, so the main shaft 2 drives the rotating shafts 52 and the flattening heads 53 of the two flattening components 5 through the belt component 55 and is always in a self-rotation state, so that at the moment when the flattening head 53 is in contact, it will automatically rotate and flatten the full pole ears, that is, the positive and negative pole ears at both ends of the lithium battery 7 are synchronously flattened; and, once the full pole ears at both ends of the lithium battery 7 are flattened, as the main shaft 2 rotates, the positioning guide shafts 62 of the two pushing components 6 just roll out of the inner concave part 641 of the guide ring groove 64 at the same time, that is, the two flattening components 5 move back to back at the same time and drive the two flattening heads 53 to separate from the two ends of the lithium battery 7, and finally the lithium battery 7 with the full pole ears flattened will continue to be driven to rotate with the continuous rotation of the battery turntable 3 until it leaves the pressing belt 8 and separates from the battery engaging station 31 under the action of its own gravity or the action of the lever, and finally is output from the discharge chute 14.

[0033] The lithium battery 7 involved in the above working process actually refers to a cylindrical lithium battery cell, that is, after the cell is wound with the positive electrode sheet and the negative electrode sheet, the winding ends of the positive electrode sheet and the negative electrode sheet will extend outward from the two ends of the cell respectively, thereby forming full pole ears at both ends of the lithium battery.

[0034] In addition, the pressing belt 8 is mainly arranged above the battery turntable 3 to assist the lithium battery 7 to enter the battery engaging station 31 and be pressed and positioned or to detach from the battery engaging station 31. In actual work, when the lithium battery 7 enters the battery engaging station 31 and has all the pole ears at both ends flattened, the pressing belt 8 needs to always press and position the lithium battery 7 in the battery engaging station 31 to ensure the stability of the flattening process. Only after all the pole ears at both ends of the lithium battery 7 are flattened, the pressing belt 8 will leave the lithium battery 7 to facilitate the lithium battery to detach from the battery engaging station 31.

[0035] The pressing belt 8 is supported by a plurality of supporting wheels 82 mounted on the frame 1 and forms a rotation. An arc-shaped pressing belt portion 81 that matches the shape of the battery turntable 3 is provided at the lower part of the pressing belt 8. The pressing belt 8 presses and positions the lithium battery 7 in the battery clamping station 31 through the arc-shaped pressing belt portion 81, and the rotation of the main shaft 2 also drives the pressing belt 8 to rotate through the arc-shaped pressing belt portion 81. A belt tensioning rod 83 is provided above the pressing belt 8.

[0036] In the manufacturing process of the present invention, since the flattening action of the full tabs at both ends of the lithium battery 7 is completed continuously and automatically, the production efficiency is higher, and the manufacturing process is simpler and labor-saving, thereby better meeting the needs of automated assembly line production of lithium batteries.

[0037] The above description is only a specific embodiment of the present invention. Those skilled in the art should understand that any structural design similar to this embodiment should be included in the protection scope of the present invention.

Claims

1. A cylindrical lithium battery full-tab flattening machine, comprising a frame (1) and a main shaft (2) mounted horizontally on the frame, characterized in that The main shaft (2) is provided with a battery turntable (3) and a flattening turntable (4) of a transmission set. The outer circumferential surface of the battery turntable (3) is provided with a plurality of battery engaging positions (31) evenly distributed around the circumference. The outer circumferential surface of the flattening turntable (4) is provided with a plurality of flattening components (5) evenly distributed around the circumference and equal in number to and corresponding to the battery engaging positions (31). Each flattening component is connected to the main shaft (2) by power transmission. The rear end of each flattening component (5) is provided with a pushing component (6) for pushing the flattening component to make axial reciprocating movement. The main shaft (2) rotates to drive the battery turntable (3) and the flattening turntable (4) to rotate synchronously. Each flattening component (5) is driven by the flattening turntable (4) to form a rotation around the main shaft (2). The lithium battery (7) revolves around the sun and is simultaneously driven by the main shaft (2) to rotate synchronously. The lithium battery (7) enters the battery engaging station (31) and is driven to rotate by the battery turntable (3). The corresponding flattening components (5) move to fit the end of the lithium battery (7) and rotate to flatten the entire pole ear, and then move away from the end of the lithium battery (7). The lithium battery (7) with the entire pole ear flattened is driven and separated from the battery engaging station (31) as the battery turntable (3) continues to rotate. Each of the flattening components (5) comprises a moving shaft (51) axially reciprocatingly mounted on the outer circumference of the flattening turntable (4), a pushing component (6) is provided at the rear end of the moving shaft, and a rotating shaft (52) is provided at the front end of the moving shaft (51) to rotate coaxially. A flattening head (53) is provided at the front end; the pushing assembly (6) drives the moving shaft (51) and the rotating shaft (52) to make axial reciprocating movements; the rotating shaft (52) is connected to the main shaft (2) by power transmission; the flattening head (53) moves to fit the end of the lithium battery (7) and rotates to flatten the entire pole ear; the pushing assembly (6) includes a guide wheel (61) movably mounted on the main shaft (2) and fixed to the frame (1); a guide ring groove (64) coaxial with the guide wheel is provided on the outer circumferential surface of the guide wheel, and the guide ring groove has an inner concave portion (641) close to the battery turntable (3); correspondingly, a positioning guide shaft (62) is provided at the rear end of the moving shaft (51) and is fitted in the guide ring groove (64); The main shaft (2) rotates to drive the flattening turntable (4) to drive the flattening assembly (5) to revolve around the main shaft (2), the positioning guide shaft (62) rolls along the guide ring groove (64), and the flattening head (53) at the front end of the rotating shaft (52) is separated from the end of the lithium battery (7); the positioning guide shaft (62) rolls to the inner concave portion (641) of the guide ring groove (64), and drives the moving shaft (51) and the rotating shaft (52) to move axially together to approach the battery turntable (3), and the flattening head (53) at the front end of the rotating shaft (52) fits the end of the lithium battery (7) and rotates to flatten the entire pole ear; the one-to-one corresponding flattening assembly (5) and the battery engaging station (31) are on the same axis, and the same axis is parallel to the axis of the main shaft (2).

2. A cylindrical lithium battery full-tab flattening machine according to claim 1, characterized in that A belt assembly (55) is provided between the rotating shaft (52) and the main shaft (2) for power transmission connection. The rotating shaft (52) is driven by the main shaft (2) to rotate via the belt assembly (55).

3. A cylindrical lithium battery full-tab flattening machine according to claim 1, characterized in that The movable shaft (51) of each of the kneading components (5) is mounted on the outer circumferential surface of the kneading rotary disc (4) via a shaft sleeve (54), and the movable shaft (51) performs axial reciprocating movement in the shaft sleeve (54).

4. A cylindrical lithium battery full-tab flattening machine according to claim 1, characterized in that A pressing belt (8) is provided above the battery turntable (3). When the lithium battery (7) enters the battery engaging station (31) and has its full pole ears flattened at the end, the pressing belt (8) always presses and positions the lithium battery (7) in the battery engaging station (31) until the full pole ears at the end of the lithium battery (7) are flattened and the pressing belt (8) leaves, and the lithium battery (7) is separated from the battery engaging station (31).

5. A cylindrical lithium battery full-tab flattening machine according to claim 4, characterized in that The pressing belt (8) is supported by a plurality of supporting wheels (82) mounted on the frame (1) to rotate. An arc-shaped pressing belt portion (81) is provided at the bottom of the pressing belt (8) and matches the shape of the battery turntable (3) and presses and positions the lithium battery (7) in the battery engaging station (31). A belt tensioning rod (83) is provided above the pressing belt (8).

6. A cylindrical lithium battery full-tab flattening machine according to claim 5, characterized in that The pressing belt (8) presses the lithium battery (7) in the positioning battery clamping station (31) via the arc-shaped pressing belt portion (81), and the main shaft (2) rotates and drives the pressing belt (8) to rotate via the arc-shaped pressing belt portion (81).

7. The cylindrical lithium battery full-tab flattening machine according to claim 1, characterized in that There are two kneading turntables (4), which are respectively located on both sides of the battery turntable (3). The outer circumferential surface of the kneading turntable (4) on each side is provided with a plurality of kneading components (5) which are evenly distributed on the circumference and are equal in number to and corresponding to the battery engaging stations (31). The main shaft (2) rotates to drive the battery turntable (3) and the kneading turntables (4) on both sides to rotate synchronously. The lithium battery (7) enters the battery engaging station (31) and is driven to rotate by the battery turntable (3). The kneading components (5) on both sides corresponding to each other move synchronously to fit the two ends of the lithium battery (7) and rotate to knead the full pole ears, and then move synchronously to separate from the two ends of the lithium battery (7).

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