Tab cutting device and method for light power battery

Abstract

The invention discloses a tab cutting device and method for a light power battery, and belongs to the technical field of battery tab machining, the tab cutting device comprises a vertical rod, side plates are fixedly arranged on the upper surface of the vertical rod, a plurality of conveying rollers are rotationally arranged between the side plates, and the light power battery is conveyed on the conveying rollers; a liftable cross-shaped reversing block is arranged in the middle of the conveying roller, first supporting rods are connected between the adjacent vertical rods located at the position of the cross-shaped reversing block, and second supporting rods are symmetrically connected into the first supporting rods; primary positioning is completed through the clamping plates, then the cross reversing block is rotated, and the light power battery is reversed; according to the position of the battery after secondary positioning, the position of the cutting knife is automatically adjusted, the consistency of the cutting lengths of the tabs at the two ends of the light power battery is ensured through primary positioning, accurate reversing and secondary positioning, the rejection rate of the light power battery is reduced, and the production efficiency and the product percent of pass are improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of battery tab processing, and particularly relates to a tab cutting device and a tab cutting method for a light power battery. BACKGROUND

[0002] With the rapid development of the new energy industry, the market demand for light power batteries, which are core energy components of new energy vehicles, portable electronic devices and the like, gradually increases. In the production process of the light power battery, tab cutting and welding are one of key processes for guaranteeing the performance and quality of the battery, and the precision of the tab cutting and welding directly affects the charge-discharge efficiency, safety and service life of the battery.

[0003] When cutting the battery, an artificial assisted positioning method is mostly used. The artificial assisted positioning not only increases the labor intensity of the operator, but also is difficult to guarantee the consistency of positioning each time, and is prone to cause the deviation of the relative position of the battery tab and the cutting mechanism due to human operation errors. A single conveying mechanism cannot automatically adjust according to the actual orientation of the battery tab, and when the battery tab is not parallel to the conveying roller or the cutting knife is not perpendicular, the battery cannot be timely corrected in the direction, and thus the battery needs to be manually cut after being changed in the direction.

[0004] Patent CN112108704A discloses a tab cutting device and method. Two tab cutting assemblies arranged symmetrically are provided. The tab cutting assembly includes a frame body sliding in the horizontal direction, a lower pre-pressing block mounting plate and a cutting assembly mounting plate sliding in the vertical direction are installed on the frame body. The cutting assembly mounting plate is installed with an upper pre-pressing block and a cutting knife, and the lower pre-pressing block mounting plate is installed with a lower pre-pressing block arranged opposite to the upper pre-pressing block. According to the position of the battery cell, the position of the cutting knife is adjusted in real time, so that the length of the two tabs always remains equal.

[0005] However, the light power battery in the cutting device cannot be automatically cut, and the operator needs to send the battery to the cutting platform one by one for cutting work, which is low in production efficiency. SUMMARY

[0006] The present application aims to solve the problems that the existing light power battery tab cannot ensure that the battery tab and the cutting knife are vertically distributed during the cutting and conveying process, manual intervention is needed, the production efficiency is low, and the battery is not effectively positioned before cutting, the cutting length of the battery tab is inconsistent, and the battery quality is affected, and provides a tab cutting device and a tab cutting method for a light power battery.

[0007] The purpose of the present application can be achieved by the following technical solutions: The utility model provides a kind of tab cutting device of light power battery, including vertical pole, vertical pole upper surface is equipped with side plate, a plurality of conveying rollers are rotatably arranged between side plate, light power battery is conveyed on conveying roller;Light power battery is reversed by rotating cross reversing block;Liftable cross reversing block is equipped in the middle of conveying roller, first support rod is connected between the vertical pole of adjacent position of cross reversing block, and second support rod is connected symmetrically in the inside of first support rod;Symmetrical first fixed ring is fixedly arranged on second support rod, first lifting shaft is slidably arranged in first fixed ring, and the upper surface of first lifting shaft is fixedly connected with the lower surface of first lifting plate;Fixed bearing and first connecting rod are fixedly installed on the upper surface of first lifting plate, rotating shaft is connected in fixed bearing, connecting ring is fixedly connected to the outside of rotating shaft, mounting block is rotatably connected to the outside of connecting ring, and the output end of second cylinder is fixedly connected with mounting block.

[0008] Further, the specific reversing steps of light power battery are as follows: the first lifting plate is lifted by the first cylinder, the rotating shaft is lifted by the first lifting plate, and the cross reversing block is lifted by the rotating shaft rising; then the output end of second cylinder is elongated to drive the connecting ring to rotate around the center of rotating shaft, the rotating shaft is rotated in fixed bearing by the rotation of connecting ring, and the cross reversing block is rotated by 90 degrees by the rotation of rotating shaft.

[0009] Further, the support plate is fixedly installed on the side plate, the first guide rod is rotatably connected to the support plate, the first bidirectional screw rod is arranged between the first guide rod, the clamping plate is symmetrically arranged on the first bidirectional screw rod, and the light power battery is preliminarily positioned by the clamping plate.

[0010] Further, the third support rod is fixedly installed on the upper surface of side plate, and the first fixed plate is fixedly arranged on the upper surface of third support rod;The second fixed plate is fixedly arranged between the symmetrically arranged side plates.

[0011] Further, the first fixed plate is provided with the first limiting groove symmetrically, the limiting ring is slidably arranged in the first limiting groove, and the second lifting shaft is slidably arranged in the limiting ring;Limiting block is arranged on the two sides of limiting ring.

[0012] Further, the second connecting rod is fixedly connected to the upper surface of second lifting shaft, the second bidirectional screw rod is threadedly connected to one end of second connecting rod, the second guide rod is slidably connected to the other end of second connecting rod, the second lifting plate is slidably connected to the middle of second connecting rod, and the position of cutting knife can be adjusted by moving second lifting shaft relatively or oppositely.

[0013] Further, the position adjusting method of the cutting knife is as follows: the second motor drives the second bidirectional screw rod to rotate, the second bidirectional screw rod drives the symmetrically arranged second connecting rod to move oppositely or reversely, the second connecting rod drives the second lifting shaft to move oppositely or reversely, and the second lifting shaft drives the cutting knife to move oppositely or reversely, so that the position of the cutting knife is adjusted according to the tab cutting length of the light power battery.

[0014] Further, the middle part of the second fixed plate is provided with a notch, the side of the notch close to the cross reversing block is provided with a chamfer, and the two sides of the notch are both slidably provided with a moving plate, one end of the moving plate is fixedly connected with a limiting rod, and the limiting rod is provided with a spring; the light power battery is positioned twice through cooperation of the notch, the limiting rod and the spring.

[0015] Further, the second fixed plate is provided with a third limiting groove, the symmetrically arranged moving plates are provided with a collecting opening in opposite directions, and the side of the second fixed plate away from the cross reversing block is provided with an ultrasonic welding machine.

[0016] The application also provides a tab cutting method of a light power battery, which comprises the following steps: Step one: preliminary positioning of the light power battery: when the light power battery is conveyed to the position of the clamping plate, the first bidirectional screw rod drives the symmetrically arranged clamping plates to move oppositely, so that the light power battery is positioned to the middle position; Step two: reversing of the light power battery: the first cylinder drives the first lifting plate to ascend, the first lifting plate drives the rotating shaft to ascend, and the rotating shaft drives the cross reversing block to ascend; then the output end of the second cylinder is elongated to drive the connecting ring to rotate, the connecting ring drives the rotating shaft to rotate, the rotating shaft drives the cross reversing block to rotate by 90 degrees, and the light power battery is reversed; Step three: adjusting the position of the cutting knife according to the tab cutting length of the light power battery: the second motor drives the second bidirectional screw rod to rotate, the second bidirectional screw rod drives the symmetrically arranged second lifting shaft to move oppositely or reversely, the second lifting shaft drives the cutting knife to move oppositely or reversely, so that the position of the cutting knife is adjusted; Step four: secondary positioning of the light power battery: under the action of the conveying roller, the light power battery slides to the lower notch, and the moving plates on the two sides of the notch are secondarily positioned to the light power battery under the action of the spring and the limiting rod; Step five: cutting the tab of the light power battery: the third cylinder drives the second lifting plate to descend, the second lifting plate drives the second connecting rod to descend, the second connecting rod drives the second lifting shaft to descend, and the second lifting shaft drives the symmetrically arranged cutting knife to descend, so that the tab of the light power battery is cut, and the generated tab waste falls into the collecting opening.

[0017] The beneficial effects of the present application are as follows: 1、The present application completes the initial positioning by the clamping plate, and then moves the initially positioned light power battery immediately above the cross reversing block, at this time, the inductor automatically detects the relative state of the battery tab and the conveying roller - if the tab and the conveying roller are not parallel, the cross reversing block is rotated to reverse the light power battery; then the light power battery slides along the predetermined track to the lower notch under the action of the conveying roller, the moving plates on both sides of the notch will position the battery again, at this time, the tabs at both ends of the battery are above the moving plates; according to the position of the battery after the secondary positioning, the position of the cutting knife is automatically adjusted, and then the tabs at both ends of the battery are cut, and the tab waste generated by cutting falls into the collecting port under the action of gravity; the whole process effectively ensures the consistency of the cutting length of the tabs at both ends of the light power battery through "initial positioning-accurate reversing-secondary positioning", reduces the scrap rate of the light power battery, and improves the production efficiency and product qualification rate.

[0018] 2、The first lifting plate is driven by the first cylinder to rise, the first lifting plate drives the rotating shaft to rise, and the rotating shaft drives the cross reversing block to rise; then the second cylinder works, the output end of the second cylinder is elongated to drive the connecting ring to rotate around the center of the rotating shaft, the connecting ring rotates to drive the rotating shaft to rotate in the fixed bearing, and the rotating shaft rotates to drive the cross reversing block to rotate by 90 degrees, thereby reversing the light power battery above the cross reversing block, at this time, the tabs at both ends of the light power battery are in parallel with the conveying roller, which is convenient for the cutting knife to cut the tabs at both ends of the light power battery, and automatic production is realized.

[0019] 3、The second bidirectional screw is driven by the second motor to rotate, the second bidirectional screw drives the symmetrically arranged second connecting rods to move relatively or oppositely, the second connecting rods relatively or oppositely move to drive the second lifting shaft to relatively or oppositely move, and the second lifting shaft relatively or oppositely moves to drive the cutting knife to relatively or oppositely move, so that the position of the cutting knife can be adjusted according to the position of the tabs at both ends of the light power battery after the secondary positioning. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present application; Figure 2 It is a position diagram of the cross reversing block of the present application; Figure 3 It is a connection diagram of the cross reversing block of the present application; Figure 4 It is a front view diagram of Figure 3 ; Figure 5 It is a connection diagram of the first connecting rod and the second cylinder of the present application; Figure 6 It is a connection diagram of Figure 5A schematic diagram of the first fixed plate of the present application is shown in Figure 1; Figure 7 A schematic diagram of the structure connection of the first fixed plate of the present application is shown in Figure 2; Figure 8 A schematic diagram of the first fixed plate of the present application is shown in Figure 1; Figure 7 Figure 9 A schematic diagram of the first fixed plate of the present application is shown in Figure 1; Figure 7 A schematic diagram of the first fixed plate of the present application is shown in Figure 1; Figure 10 A schematic diagram of the first fixed plate of the present application is shown in Figure 1.

[0021] In the figure: 1, conveying roller; 11, side plate; 12, vertical rod; 2, support plate; 21, first bidirectional screw rod; 22, clamping plate; 23, first guide rod; 24, first motor; 3, cross reversing block; 31, rotating shaft; 3101, connecting ring; 3102, mounting block; 3103, fixed bearing; 32, first lifting plate; 33, first air cylinder; 34, first fixed ring; 35, first lifting shaft; 36, first support rod; 37, first connecting rod; 38, second air cylinder; 39, second support rod; 4, first fixed plate; 4001, first limiting groove; 4002, second limiting groove; 41, third support rod; 42, second lifting plate; 43, second bidirectional screw rod; 4301, second guide rod; 44, second motor; 45, second connecting rod; 46, second fixed plate; 4601, notch; 4602, collecting opening; 4603, chamfer; 47, third air cylinder; 48, moving plate; 4801, limiting rod; 4802, spring; 4803, third limiting groove; 49, second lifting shaft; 4901, limiting ring; 4902, limiting block; 4903, cutting knife; 5, ultrasonic welding machine; 6, light power battery. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0023] Please refer to Figures 1-2 shown, a tab cutting device for light power battery, comprising a vertical rod 12, a plurality of conveying rollers 1 are rotatably arranged between the upper surfaces of the vertical rods 12, and light power batteries 6 are conveyed on the conveying rollers 1. The present application cuts the tabs at both ends of the light power battery 6. The transmission mode between the conveying rollers 1 is the prior art, and will not be described in detail in the present scheme. ​

[0024] Please see Figures 3-6 As shown, the lightweight power battery is initially positioned by adjusting the symmetrical clamping plates 22; a support plate 2 is fixedly installed on the side plate 11, and symmetrically arranged first guide rods 23 are rotatably connected to the support plate 2. A first bidirectional lead screw 21 is provided between the first guide rods 23. One end of the first bidirectional lead screw 21 is rotatably connected to the inner side wall of the support plate 2, and the other end of the first bidirectional lead screw 21 is connected to the output end of the first motor 24; symmetrically arranged clamping plates 22 are threaded onto the first bidirectional lead screw 21. The clamping plates 22 are used for the initial positioning of the lightweight power battery; the bottom height of the clamping plates 22 is lower than the height of the two end tabs of the lightweight power battery.

[0025] The lightweight power battery is reversed by rotating the cross reversing block 3; a liftable cross reversing block 3 is provided in the middle of the conveying roller 1 on one side, and a first support rod 36 is connected between the adjacent vertical rods 12 located at the position of the cross reversing block 3. The first support rods 36 and the vertical rods 12 are distributed perpendicularly; a second support rod 39 is symmetrically connected inside the first support rod 36; a symmetrical first fixing ring 34 is fixedly provided on each of the second support rods 39, and a first lifting shaft 35 is slidably provided on each of the first fixing rings 34. The upper surface of the first lifting shaft 35 is fixedly connected to the lower surface of the first lifting plate 32; the lower surface of the first lifting plate 32 is also fixedly connected to the output end of the first cylinder 33; the first lifting shaft 35 is symmetrically arranged on both sides of the first lifting plate 32 to increase the stability of the first lifting plate 32 when it rises or falls.

[0026] A fixed bearing 3103 and a first connecting rod 37 are fixedly installed on the upper surface of the first lifting plate 32. A rotating shaft 31 is connected inside the fixed bearing 3103. A connecting ring 3101 is fixedly connected to the outer side of the rotating shaft 31. The outer side of the connecting ring 3101 is V-shaped. A mounting block 3102 is rotatably connected to the outer side of the connecting ring 3101. The mounting block 3102 is fixedly connected to the output end of the second cylinder 38. The other end of the second cylinder 38 is rotatably connected to the first connecting rod 37. The lower surface of the cross reversing block 3 is fixedly connected to the upper surface of the rotating shaft 31.

[0027] A sensor is provided on the side plate 11 located at the position of the cross reversing block 3. In this embodiment, the sensor is ToFi sensor. The sensor is used to detect whether the tabs of the lightweight power battery are perpendicular to the cutting blade 4903. If they are not perpendicular, the sensor will transmit the signal to the first cylinder 33 and the second cylinder 38.

[0028] When the lightweight power battery is transferred to the position of the cross commutator block 3, the sensor detects it. If the tab cutting blades 4903 of the lightweight power battery are vertically distributed, the lightweight power battery is transferred to the cutting point for cutting.

[0029] If the pole lug of the light power battery is not perpendicular to the cutting knife 4903, the sensor will transmit a signal to the first cylinder 33 and the second cylinder 38; first, the first cylinder 33 works, the first cylinder 33 drives the first lifting plate 32 to rise, the first lifting plate 32 drives the rotating shaft 31 to rise, and the rotating shaft 31 rises to drive the cross reversing block 3 to rise; then the second cylinder 38 works, the output end of the second cylinder 38 is elongated to drive the connecting ring 3101 to rotate around the center of the rotating shaft 31, the connecting ring 3101 rotates to drive the rotating shaft 31 to rotate in the fixed bearing 3103, and the rotating shaft 31 rotates to drive the cross reversing block 3 to rotate by 90 degrees, so as to reverse the light power battery above the cross reversing block 3. At this time, the pole lug at both ends of the light power battery is perpendicular to the cutting knife 4903.

[0030] Please refer to Figures 7-10 As shown in the figure, according to the specific cutting position of the pole lug at both ends of the light power battery, the position of the cutting knife 4903 is adjusted accordingly, the third supporting rod 41 is fixedly installed on the upper surface of the side plate 11 away from the supporting plate 2, and the first fixed plate 4 is fixedly arranged on the upper surface of the third supporting rod 41; the second fixed plate 46 is fixedly arranged between the symmetrically arranged side plates 11, the first limiting groove 4001 is arranged on the first fixed plate 4, the limiting ring 4901 is slidably arranged in the first limiting groove 4001, and the second lifting shaft 49 is slidably arranged in the limiting ring 4901; the limiting block 4902 is arranged on both sides of the limiting ring 4901, and the second limiting groove 4002 is arranged on the first fixed plate 4 and matched with the limiting block 4902.

[0031] The second connecting rod 45 is fixedly connected to the upper surface of the second lifting shaft 49, and the second connecting rod 45 is connected to the second lifting shaft 49 in the parallel direction of the side plate 11; one end of the second connecting rod 45 is threadedly connected to the second bidirectional screw rod 43, the other end of the second connecting rod 45 is slidably connected to the second guide rod 4301, the middle part of the second connecting rod 45 is slidably connected to the second lifting plate 42, and the lower surface of the second lifting plate 42 is connected to the output end of the third cylinder 47; one end of the second bidirectional screw rod 43 is connected to the second motor 44; and the cutting knife 4903 is installed on the lower surface of the second lifting shaft 49.

[0032] By starting the second motor 44, the second motor 44 drives the second bidirectional screw rod 43 to rotate, the second bidirectional screw rod 43 drives the symmetrically arranged second connecting rod 45 to move relatively or oppositely, the second connecting rod 45 drives the second lifting shaft 49 to move relatively or oppositely, and the second lifting shaft 49 drives the cutting knife 4903 to move relatively or oppositely, so as to adjust the position of the cutting knife 4903.

[0033] The light power battery is positioned twice through the cooperation of the notch 4601 and the limiting rod 4801 and the spring 4802, the middle part of the second fixed plate 46 is provided with the notch 4601, the side of the notch 4601 close to the cross reversing block 3 is provided with the chamfer 4603, the chamfer 4603 facilitates the light power battery to slide into the notch 4601 and is positioned twice.

[0034] The two sides of the notch 4601 are slidably provided with the moving plate 48, one end of the moving plate 48 is fixedly connected with the limiting rod 4801, the limiting rod 4801 is provided with the spring 4802, the position of the second fixed plate 46 is provided with the third limiting groove 4803, the limiting rod 4801 is arranged in cooperation with the limiting groove; the symmetrically arranged moving plates 48 are provided with the collecting opening 4602 in opposite directions, the limiting rod 4801 and the spring 4802 can match light power batteries of different lengths; the side of the second fixed plate 46 away from the cross reversing block 3 is provided with the ultrasonic welding machine 5 for welding the tab of the light power battery; the ultrasonic welding machine in the embodiment adopts the JY-P203-F of the gold one ultrasonic.

[0035] I. The primary positioning of the light power battery 6 is specifically as follows: By starting the first motor 24, the first motor 24 drives the first bidirectional screw rod 21 to rotate, the first bidirectional screw rod 21 drives the symmetrically arranged clamping plates 22 to move relatively, so that the light power battery 6 on the conveying roller 1 is positioned to the middle position, and the primary positioning of the light power battery 6 is realized.

[0036] II. The present application relates to the reversing operation of the light power battery 6, and the specific content is as follows: By starting the first cylinder 33, the first cylinder 33 drives the first lifting plate 32 to rise, the first lifting plate 32 drives the rotating shaft 31 to rise, the rotating shaft 31 rises and drives the cross reversing block 3 to rise; then the second cylinder 38 works, the output end of the second cylinder 38 is elongated and drives the connecting ring 3101 to rotate around the center of the rotating shaft 31, the connecting ring 3101 drives the rotating shaft 31 to rotate in the fixed bearing 3103, and the rotating shaft 31 drives the cross reversing block 3 to rotate by 90 degrees, so that the light power battery above the cross reversing block 3 is reversed, the tabs at both ends of the light power battery are distributed vertically with the cutting knife 4903, which is convenient for the subsequent cutting knife 4903 to cut them at the same time, and the automatic production is realized.

[0037] III. The position adjustment steps of the cutting knife 4903 are specifically as follows: By starting the second motor 44, the second motor 44 drives the second bidirectional screw rod 43 to rotate, the second bidirectional screw rod 43 drives the symmetrically arranged second connecting rod 45 to move oppositely or oppositely, the second connecting rod 45 oppositely or oppositely moves the second lifting shaft 49 oppositely or oppositely, and the second lifting shaft 49 oppositely or oppositely moves the cutting knife 4903 oppositely or oppositely, so that the position of the cutting knife 4903 is adjusted according to the tab cutting length of the light power battery 6.

[0038] Four, the secondary positioning of the light power battery 6 is specifically as follows: Then the light power battery 6 slides to the lower notch 4601 under the action of the conveying roller 1, the chamfer 4603 is more convenient for the light power battery 6 to slide into the notch 4601, and the moving plates 48 on both sides of the notch 4601 are secondarily positioned according to light power batteries 6 of different lengths under the action of the spring and the limiting rod. The two end tabs of the light power battery 6 are distributed on the upper surface of the moving plate 48, facilitating the cutting work of the cutting knife 4903.

[0039] Five, the tab cutting operation of the light power battery 6 is specifically as follows: By starting the third cylinder 47, the third cylinder 47 drives the second lifting plate 42 to descend, the second lifting plate 42 drives the second connecting rod 45 to descend, the second connecting rod 45 drives the second lifting shaft 49 to descend, and the second lifting shaft 49 drives the symmetrically arranged cutting knife 4903 to descend, so as to cut the tabs of the light power battery 6 on the upper surface of the moving plate 48. The tab waste generated by cutting falls to the collection port 4602 under the action of gravity.

[0040] A tab cutting method of a light power battery, comprising the following steps: Step one: preliminary positioning of the light power battery 6: the light power battery 6 to be cut is moved to the conveying roller 1, and the conveying roller 1 realizes conveying one by one; when the light power battery 6 is conveyed to the position of the clamping plate 22, the first bidirectional screw rod 21 drives the symmetrically arranged clamping plate 22 to move oppositely, so as to position the light power battery 6 on the conveying roller 1 to the middle position, realizing the preliminary positioning of the light power battery 6.

[0041] Step two: reversing the light power battery 6: the initially positioned light power battery 6 is transported to the top of the cross reversing block 3, at this time, the inductor automatically detects the relative state of the battery tab and the cutting knife 4903 - if the tab is not perpendicular to the cutting knife 4903, the first lifting plate 32 is raised by the first cylinder 33, the rotating shaft 31 is raised by the first lifting plate 32, and the cross reversing block 3 is raised by the rotating shaft 31; then the second cylinder 38 works, the output end of the second cylinder 38 is elongated to drive the connecting ring 3101 to rotate around the center of the rotating shaft 31, the connecting ring 3101 rotates to drive the rotating shaft 31 to rotate in the fixed bearing 3103, and the rotating shaft 31 rotates to drive the cross reversing block 3 to rotate 90 degrees, thereby reversing the light power battery above the cross reversing block 3, so that the tabs at both ends of the light power battery are distributed vertically with the cutting knife 4903.

[0042] Step three: adjusting the position of the cutting knife 4903 according to the tab cutting length of the light power battery 6: by starting the second motor 44, the second motor 44 drives the second bidirectional screw 43 to rotate, the second bidirectional screw 43 drives the symmetrically arranged second connecting rod 45 to move relatively or oppositely, the second connecting rod 45 drives the second lifting shaft 49 to move relatively or oppositely, and the second lifting shaft 49 drives the cutting knife 4903 to move relatively or oppositely, thereby adjusting the position of the cutting knife 4903.

[0043] Step four: secondary positioning of the light power battery 6: the light power battery 6 falls into the lower notch 4601 under the action of the conveying roller 1, the chamfer 4603 makes it easier for the light power battery 6 to fall into the notch 4601, and the moving plates 48 on both sides of the notch 4601 are secondarily positioned according to light power batteries 6 of different lengths under the action of the spring and the limiting rod.

[0044] Step five: cutting the tabs of the light power battery 6: by starting the third cylinder 47, the third cylinder 47 drives the second lifting plate 42 to descend, the second lifting plate 42 drives the second connecting rod 45 to descend, the second connecting rod 45 drives the second lifting shaft 49 to descend, and the second lifting shaft 49 drives the symmetrically arranged cutting knife 4903 to descend, thereby cutting the tabs of the light power battery 6 on the upper surface of the moving plate 48, and the tab waste generated by cutting falls into the collection port 4602 under the action of gravity.

[0045] The working process of the embodiment is as follows: the light power battery 6 is transported to the conveying roller 1, and the conveying roller 1 realizes individual transportation; when the battery is transported to the position of the clamping plate 22, the clamping plate 22 positions the light power battery 6 to the middle position by relative movement, completing the initial positioning.

[0046] Then the primary positioning of the light power battery 6 is immediately transported to the cross block 3, at this time, the inductor will automatically detect the relative state of the battery tab and the cutting knife 4903 - if the tab is not perpendicular to the cutting knife 4903; The inductor transmits the detection result to the first cylinder 33 and the second cylinder 38; first, the first cylinder 33 drives the first lifting plate 32 to rise, the first lifting plate 32 drives the rotating shaft 31 to rise, the rotating shaft 31 drives the cross block 3 to rise; then the second cylinder 38 works, the output end of the second cylinder 38 is elongated to drive the connecting ring 3101 to rotate around the center of the rotating shaft 31, the connecting ring 3101 drives the rotating shaft 31 to rotate in the fixed bearing 3103, the rotating shaft 31 drives the cross block 3 to rotate 90 degrees, thereby the light power battery above the cross block 3 is reversed, and after the reversing is completed, the first cylinder 33 drives the first lifting plate 32 to descend.

[0047] According to the length of the tab of the light power battery 6, the position of the cutting knife 4903 is adjusted: by starting the second motor 44, the second motor 44 drives the second bidirectional screw rod 43 to rotate, the second bidirectional screw rod 43 drives the symmetrically arranged second connecting rod 45 to move relatively or oppositely, the second connecting rod 45 drives the second lifting shaft 49 to move relatively or oppositely, the second lifting shaft 49 drives the cutting knife 4903 to move relatively or oppositely, thereby the position of the cutting knife 4903 is adjusted.

[0048] Then the secondary positioning of the light power battery 6: the light power battery 6 slides to the lower notch 4601 under the action of the conveying roller 1, the chamfer 4603 is more convenient for the light power battery 6 to slide into the notch 4601, and the moving plates 48 on both sides of the notch 4601 will be secondarily positioned according to the light power battery 6 of different lengths under the action of the spring and the limiting rod.

[0049] Finally, the tab of the light power battery 6 is cut: by starting the third cylinder 47, the third cylinder 47 drives the second lifting plate 42 to descend, the second lifting plate 42 drives the second connecting rod 45 to descend, the second connecting rod 45 drives the second lifting shaft 49 to descend, the second lifting shaft 49 drives the symmetrically arranged cutting knife 4903 to descend, thereby the tab of the light power battery 6 on the upper surface of the moving plate 48 is cut, and the tab waste generated by the cutting falls into the collecting port 4602 under the action of gravity; the whole process effectively ensures the consistency of the cutting length of the tabs at both ends of the light power battery 6 through "primary positioning-precise reversing-secondary positioning", and reduces the scrap rate of the light power battery 6. Finally, the cut light power battery is transferred to the ultrasonic welding machine 5 by the mechanical hand for welding work.

[0050] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. It is also possible in the present disclosure that steps can be executed in different sequence where is graphically or explicitly stated or indicated. Further, it is also possible in some instances, to combine or omit certain steps. Additionally, certain materials can be replaced by other

[0051] While the embodiments of the application have been shown and described herein, it is to be understood that the application is not limited to these embodiments. Rather, it is to be understood that various modifications, changes, substitutions and alterations can be made to the embodiments without departing from the spirit and scope of the application.

Claims

1. A tab cutting device for a lightweight power battery, comprising a vertical rod (12), a side plate (11) fixedly disposed on the upper surface of the vertical rod (12), and a plurality of conveying rollers (1) rotatably disposed between the side plates (11), wherein a lightweight power battery (6) is conveyed on the conveying rollers (1); characterized in that: The lightweight power battery (6) is commutated by rotating cross commutator (3); The conveying roller (1) is provided with a liftable cross reversing block (3) in the middle. A first support rod (36) is connected between adjacent vertical rods (12) located at the cross reversing block (3). A second support rod (39) is symmetrically connected inside the first support rod (36). A symmetrical first fixing ring (34) is fixed on each of the second support rods (39). A first lifting shaft (35) is slidably provided on each of the first fixing rings (34). The upper surface of the first lifting shaft (35) is fixedly connected to the lower surface of the first lifting plate (32). A fixed bearing (3103) and a first connecting rod (37) are fixedly installed on the upper surface of the first lifting plate (32). A rotating shaft (31) is connected inside the fixed bearing (3103). A connecting ring (3101) is fixedly connected to the outside of the rotating shaft (31). A mounting block (3102) is rotatably connected to the outside of the connecting ring (3101). The mounting block (3102) is fixedly connected to the output end of the second cylinder (38).

2. The electrode cutting device for a lightweight power battery according to claim 1, characterized in that: The specific reversing steps of the light power battery (6) are as follows: the first cylinder (33) drives the first lifting plate (32) to rise, the first lifting plate (32) drives the rotating shaft (31) to rise, the rotating shaft (31) rises and drives the cross reversing block (3) to rise; then the output end of the second cylinder (38) extends and drives the connecting ring (3101) to rotate around the center of the rotating shaft (31), the rotating ring (3101) rotates and drives the rotating shaft (31) to rotate in the fixed bearing (3103), the rotating shaft (31) rotates and drives the cross reversing block (3) to rotate 90 degrees.

3. The electrode cutting device for a lightweight power battery according to claim 1, characterized in that: A support plate (2) is fixedly installed on the side plate (11). A first guide rod (23) is rotatably connected to the support plate (2). A first bidirectional screw rod (21) is provided between the first guide rods (23). A clamping plate (22) is threaded onto the first bidirectional screw rod (21). The lightweight power battery (6) is initially positioned by the clamping plate (22).

4. The electrode cutting device for a lightweight power battery according to claim 3, characterized in that: A third support rod (41) is fixedly installed on the upper surface of the side plate (11), and a first fixing plate (4) is fixedly installed on the upper surface of the third support rod (41); a second fixing plate (46) is fixedly installed between the symmetrically arranged side plates (11).

5. The electrode cutting device for a lightweight power battery according to claim 4, characterized in that: The first fixed plate (4) is provided with a first limiting groove (4001) symmetrically arranged. A limiting ring (4901) is slidably arranged in the first limiting groove (4001). A second lifting shaft (49) is slidably arranged in the limiting ring (4901). Limiting blocks (4902) are provided on both sides of the limiting ring (4901).

6. The electrode cutting device for a lightweight power battery according to claim 5, characterized in that: The upper surface of the second lifting shaft (49) is fixedly connected to a second connecting rod (45). One end of the second connecting rod (45) is threadedly connected to a second bidirectional lead screw (43), and the other end of the second connecting rod (45) is slidably connected to a second guide rod (4301). The middle part of the second connecting rod (45) is slidably connected to a second lifting plate (42). The position of the cutting blade (4903) can be adjusted by moving the second lifting shaft (49) relative to or in the opposite direction.

7. The electrode cutting device for a lightweight power battery according to claim 6, characterized in that: The specific method for adjusting the position of the cutting blade (4903) is as follows: The second motor (44) drives the second bidirectional lead screw (43) to rotate, the second bidirectional lead screw (43) drives the symmetrically arranged second connecting rod (45) to move relative to or opposite to each other, the relative to or opposite movement of the second connecting rod (45) drives the second lifting shaft (49) to move relative to or opposite to each other, the relative to or opposite movement of the second lifting shaft (49) drives the cutting blade (4903) to move relative to or opposite to each other, thereby adjusting the position of the cutting blade (4903) according to the tab cutting length of the lightweight power battery (6).

8. The electrode cutting device for a lightweight power battery according to claim 4, characterized in that: The second fixing plate (46) has a slot (4601) in the middle. The slot (4601) has a chamfer (4603) on the side near the cross reversing block (3). The slot (4601) has a sliding plate (48) on both sides. One end of the sliding plate (48) is fixedly connected to a limit rod (4801). The limit rod (4801) has a spring (4802). The lightweight power battery (6) is positioned twice by the cooperation of the slot (4601), the limit rod (4801) and the spring (4802).

9. The electrode cutting device for a lightweight power battery according to claim 8, characterized in that: The second fixed plate (46) is provided with a third limiting groove (4803), and the symmetrically arranged moving plates (48) are provided with collection ports (4602) in opposite directions. The second fixed plate (46) is provided with an ultrasonic welding machine (5) on the side away from the cross reversing block (3).

10. A method for cutting the tabs of a lightweight power battery, applicable to the tab cutting device for a lightweight power battery as described in any one of claims 1-9, characterized in that, Includes the following steps: Step 1: Preliminary positioning of the lightweight power battery (6): When the lightweight power battery (6) is transported to the position of the clamping plate (22), the first bidirectional lead screw (21) drives the symmetrically arranged clamping plates (22) to move relative to each other, positioning the lightweight power battery (6) in the middle position; Step 2: Reversing the direction of the light power battery (6): The first cylinder (33) drives the first lifting plate (32) to rise, the first lifting plate (32) drives the rotating shaft (31) to rise, the rotating shaft (31) rises and drives the cross reversing block (3) to rise; then the output end of the second cylinder (38) extends and drives the connecting ring (3101) to rotate, the connecting ring (3101) rotates and drives the rotating shaft (31) to rotate, the rotating shaft (31) rotates and drives the cross reversing block (3) to rotate 90 degrees, reversing the direction of the light power battery (6); Step 3: Adjust the position of the cutting blade (4903) according to the cutting length of the tab of the light power battery (6): drive the second bidirectional lead screw (43) to rotate through the second motor (44), drive the symmetrical second lifting shaft (49) to move relative to or opposite to each other, drive the cutting blade (4903) to move relative to or opposite to each other, thereby adjusting the position of the cutting blade (4903); Step 4: Secondary positioning of the light power battery (6): The light power battery (6) slides down to the lower slot (4601) under the action of the conveying roller (1), and the moving plates (48) on both sides of the slot (4601) perform secondary positioning of the light power battery (6) under the action of the spring (4802) and the limiting rod (4801). Step 5: Cut the tabs of the lightweight power battery (6): The second lifting plate (42) is lowered by the third cylinder (47), the second lifting plate (42) is lowered, the second connecting rod (45) is lowered, the second connecting rod (45) is lowered, the second lifting shaft (49) is lowered, the second lifting shaft (49) is lowered, and the symmetrically arranged cutting blades (4903) are lowered to cut the tabs of the lightweight power battery (6). The cut tab waste falls to the collection port (4602).

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