Automatic cutting and welding device for nickel sheets and tabs

Abstract

The utility model discloses an automatic nickel sheet and tab cutting and welding device which comprises a jig, a feeding and cutting mechanism, a multi-axis moving mechanism and a welding mechanism, the jig is provided with a plurality of positioning blocks used for positioning batteries and cushion blocks used for supporting tabs, and the welding mechanism is arranged on the jig. The feeding and cutting mechanism comprises a rack, a feeding disc, a feeding guide assembly and a cutting assembly, the feeding disc is used for placing a nickel strap, the feeding guide assembly is used for conveying the nickel strap to the cutting assembly in a directional mode, the nickel strap is cut in a fixed-length mode through the cutting assembly, a fixing part is arranged on the multi-axis moving mechanism, a magnetic attraction part is arranged on one side of the fixing part, and a magnetic attraction part is arranged on the other side of the fixing part. The magnetic attraction part is used for attracting the cut nickel sheet and conveying the nickel sheet to a pole lug through the multi-axis moving mechanism, and the welding mechanism is provided with a laser emitting lens used for welding the pole lug and the nickel sheet. And the risk of laser scald during welding and serious harm to human eyes caused by watching laser beams or reflected light are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic cutting and welding of tabs and nickel sheets in polymer battery manufacturing, in particular to a device for automatic cutting and welding of nickel sheets and tabs. Background Art

[0002] With the rapid development of electronic products, since batteries occupy a core position in electronic products, the quality of batteries has a vital impact on the operation and service life of electronic products. The process of welding the battery tabs and nickel sheets is one of the key factors affecting the quality of batteries.

[0003] In the prior art, manual welding is mostly used for welding the battery tabs and nickel sheets. The operator first manually fixes the battery on the welding tool, then manually takes the pre-cut nickel sheet, visually aligns the nickel sheet with the battery tab, and then starts laser welding to complete the tab nickel connection process and prepare for the next step. However, this manual welding has low efficiency and poor welding consistency. There is a risk of laser burns on the operator's fingers during welding. In addition, the operator needs to look at the welding part with his eyes during welding, and directly looking at the laser beam or reflected light will cause serious damage to the human eyes, resulting in extremely poor safety. Utility Model Content

[0004] The utility model aims to provide a nickel sheet and a tab automatic cutting and welding device to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A nickel sheet and tab automatic cutting and welding device, comprising

[0007] A jig, wherein the jig is provided with a plurality of positioning blocks for positioning the battery and a pad for supporting the tabs;

[0008] A feeding and cutting mechanism, the feeding and cutting mechanism comprises a frame, a feeding tray, a feeding guide assembly and a cutting assembly, the feeding tray is used to place the nickel strip, the feeding guide assembly is used to transport the nickel strip to the cutting assembly in a directional manner, and the nickel strip is cut to a fixed length by the cutting assembly;

[0009] A multi-axis moving mechanism, wherein a fixing piece is provided on the multi-axis moving mechanism, and a magnetic attraction portion is provided on one side of the fixing piece, wherein the magnetic attraction portion is used to absorb the cut nickel sheet and transport it to the tab through the multi-axis moving mechanism;

[0010] A welding mechanism is provided with a laser emission lens for welding the tab and the nickel sheet.

[0011] Furthermore, several of the positioning blocks are symmetrically provided with adjustment holes 1, each of the adjustment holes 1 is provided with a locking screw 1, and the locking screw 1 passes through the adjustment hole 1 and is threadedly connected to the fixture.

[0012] Furthermore, the cushion block is provided with a second adjustment hole, the second adjustment hole is provided with a second locking screw, and the second locking screw passes through the second adjustment hole and is threadedly connected to the fixture.

[0013] Furthermore, the feeding guide assembly includes a plurality of rollers and a roller frame rotatably connected to the frame, one end of the roller frame is rotatably connected to a driving wheel, the frame is provided with an adjusting hole three, one side of the driving wheel is fixedly connected to a fixed shaft that passes through the roller frame and the adjusting hole three in sequence, the other end of the fixed shaft is fixedly connected to a secondary transmission gear, the frame is provided with a motor, the output end of the motor is fixedly connected to a main transmission gear, the main transmission gear is transmission-connected to the secondary transmission gear through a transmission belt, a feeding platform and a passive wheel are provided below the driving wheel, a through hole one is provided on the feeding platform, and a part of the passive wheel protrudes from the through hole one to the upper end surface of the feeding platform, corresponding to the driving wheel.

[0014] Furthermore, a fixing seat is provided on the frame, a threaded rod is threadedly connected to the fixing seat, the threaded rod passes through the fixing seat and extends downwardly to be sleeved with a spring, and the other end of the spring abuts against the roller frame.

[0015] Furthermore, the cutting assembly includes a cutting table and a lifting cylinder 1 installed on a frame, the output end of the lifting cylinder 1 is fixedly connected to a knife seat, and a cutting knife for cutting nickel strips is installed on the knife seat.

[0016] Furthermore, the multi-axis moving mechanism includes a transmission screw assembly, and a nut seat that cooperates with the transmission screw assembly, the nut seat is fixedly connected to a mounting seat, a lifting cylinder 2 is installed on the mounting seat, a guide rail is provided below the lifting cylinder 2, a slider is provided on the guide rail and is fixedly connected to the output end of the lifting cylinder 2, and the slider is used to install a fixing.

[0017] Furthermore, a second through hole is provided on the magnetic attraction portion, and the second through hole is used for the laser emitted by the laser emission lens to pass through.

[0018] Beneficial effects of the utility model:

[0019] The utility model realizes automatic cutting and transportation of the nickel strip through the cooperation of the feeding and cutting mechanism, the multi-axis moving mechanism, the fixing part and the magnetic attraction part, and presses the nickel sheet and the pole ear by utilizing the magnetic attraction part, and then the laser emission lens emits laser to automatically weld the nickel sheet and the pole ear. This process does not require manual participation of personnel, thus improving the welding efficiency and welding effect, avoiding the risk of laser burns during welding and serious damage to human eyes caused by staring at the laser beam or reflected light, and improving the safety of welding.

[0020] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 : The overall structure diagram of the utility model.

[0022] Figure 2 : The structure diagram of the fixture of the present utility model.

[0023] Figure 3 : Front structural diagram of the feeding and cutting mechanism of the present utility model.

[0024] Figure 4 : The back structure diagram of the feeding and cutting mechanism of the utility model.

[0025] Figure 5 : Schematic diagram of nickel strip conveying of the feeding and cutting mechanism of the utility model

[0026] Figure 6 : The structural diagram of the multi-axis moving mechanism of the utility model.

[0027] Reference numerals: 1, fixture; 2, feeding and cutting mechanism; 3, multi-axis moving mechanism; 4, welding mechanism; 11, positioning block; 12, cushion block; 13, adjusting hole 1; 14, adjusting hole 2; 21, frame; 22, feeding tray; 23, feeding guide assembly; 24, cutting assembly; 31, transmission screw assembly; 32, nut seat; 33, mounting seat; 34, lifting cylinder 2; 35, guide rail; 36, slider; 37, fixing piece; 38, magnetic attraction part; 39, through hole 2; 41 , laser emission lens; 211, motor; 212, main transmission gear; 213, transmission belt; 214, adjustment hole three; 215, fixed seat; 216, threaded rod; 217, feeding platform; 218, through hole one; 219, passive wheel; 231, roller; 232, roller frame; 233, driving wheel; 234, fixed shaft; 235, auxiliary transmission gear; 241, cutting table; 242, lifting cylinder one; 243, knife seat; 244, cutting knife; 2321, spring. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0029] Please refer to Figure 1-6 ;

[0030] A nickel sheet and a tab automatic cutting and welding device comprises a fixture 1, a feeding and cutting mechanism 2, a multi-axis moving mechanism 3 and a welding mechanism 4. The fixture 1 is provided with a plurality of positioning blocks 11 for positioning a battery. Preferably, the utility model has two positioning blocks 11, which are respectively arranged to position one side of the battery and the end away from the tab. When clamping the battery, it is only necessary to manually align the battery along the direction of the two positioning blocks 11 and push and fix it to fix the battery. After the battery welding is completed, the battery can be directly taken out, which is convenient for placing and taking out the battery and improving work efficiency. The feeding and cutting mechanism 2 comprises a frame 21, a feeding tray 22, a feeding guide assembly 23 and a cutting assembly 24. The feeding tray 22 is used to place the nickel strip, and the feeding guide assembly 23 is used to transport the nickel strip to the cutting assembly 24. The nickel strip is cut to a fixed length by the cutting assembly 24. Preferably, the width of the nickel strip of the utility model is 5 mm, and the cutting assembly Component 24 cuts the nickel strip into 7 mm long nickel sheets. A fixing component 37 is provided on the multi-axis moving mechanism 3. A magnetic suction part 38 is provided on one side of the fixing component 37. The magnetic suction part 38 is used to absorb the cut nickel sheets, transport them to the pole ears through the multi-axis moving mechanism 3, and press and fix the pole ears and the nickel sheets. It is also used to press and fix the cutting end of the nickel strip when the cutting component 24 cuts the nickel strip, so as to avoid the nickel strip from warping during cutting, resulting in poor cutting or cutting effect. However, due to the lack of support for the pole ear welding, when the magnetic suction part 38 presses the pole ear and the nickel sheet, the pole ear is easily bent, thereby affecting the welding effect. For this reason, a pad 12 is also provided on the fixture 1. The pad 12 is used to support the welding part of the pole ear and the nickel sheet to ensure the stability and welding effect of the pole ear during the fixing process; a laser emission lens 41 for welding the pole ear and the nickel sheet is provided on the welding mechanism 4, and the pole ear and the nickel sheet are welded together by the laser emitted by the laser emission lens 41.

[0031] Specifically, the battery is manually placed in the jig 1, and then the positioning block 11 on the jig 1 cooperates with the operator to manually clamp and fix the battery, and the pad 12 is used to support the pole ear; the device is started, the feeding guide component 23 directional transports the nickel strip on the feeding tray 22 to the cutting component 24, the multi-axis moving mechanism 3 moves the fixing part 37 to the cutting component 24, and the magnetic suction part 38 is used to absorb and press the nickel strip, the cutting component 24 cuts the nickel strip into nickel sheets of a fixed length, and then the multi-axis moving mechanism 3 is used to transport the cut nickel sheets to the pole ear. , press it against the pole ear, after pressing, the laser emission lens 41 emits welding laser to weld the nickel sheet and the pole ear together, the multi-axis moving mechanism 3 is reset, and the operator directly removes the battery, and repeats the above steps to complete the subsequent welding process of the battery pole ear and the nickel sheet. The utility model does not need to manually fix the nickel sheet and the pole ear for welding, nor does it need human eyes to watch the welding part, which improves the welding efficiency and welding effect, avoids the risk of laser burns during welding and serious damage to the human eye caused by watching the laser beam or reflected light, and improves the safety of welding.

[0032] In this embodiment, several positioning blocks 11 are symmetrically provided with adjustment holes 13, and each of the adjustment holes 13 is provided with a locking screw 1. The locking screw 1 passes through the adjustment hole 13 and is threadedly connected to the fixture 1. The position of the positioning block 11 can be adjusted by loosening the locking screw 1, so as to realize the positioning of batteries of different sizes. There is no need to frequently replace the positioning block 11 due to changes in battery size, which effectively reduces the cost and improves the work efficiency and versatility of the fixture 1.

[0033] In addition, due to the change in battery size, the spacing and height of the two tabs on the battery also change. Therefore, an adjustment hole 14 is provided on the pad 12, and a locking screw 2 is provided on the adjustment hole 14. The locking screw 2 passes through the adjustment hole 14 and is threadedly connected to the fixture 1. The position of the pad 12 can be replaced or adjusted by loosening the locking screw 2, thereby supporting tabs of different spacings and heights, effectively improving the work efficiency and the versatility of the fixture 1.

[0034] In this embodiment, the feed guide assembly 23 includes a plurality of rollers 231 and a roller frame 232 rotatably connected to the frame 21. Preferably, there are seven rollers 231, specifically, three rollers 231 are arranged on the top and four rollers 231 are arranged on the bottom, five of which are arranged near the roller frame 232, and the other two are arranged near the supply tray 22. The five rollers 231 arranged near the roller frame 232 are arranged at intervals, the two upper rollers 231 are arranged at the intervals between the three lower rollers 231, and the rollers 231 near the supply tray The two rollers 231 of 22 are arranged correspondingly up and down, one of the rollers 231 is a concave wheel, and the other roller 231 is partially located in the upper concave wheel, which is used to limit the change of the position of the nickel belt during transmission to prevent the nickel belt from falling off the roller 231. One end of the roller frame 232 is rotatably connected to a driving wheel 233, and an adjusting hole 3 214 is provided on the frame 21. One side of the driving wheel 233 is fixedly connected to a fixed shaft 234 that passes through the roller frame 232 and the adjusting hole 3 214 in sequence, and the other end of the fixed shaft 234 is fixedly connected to a secondary transmission gear 235. A motor 211 is provided, preferably, the motor 211 is a servo motor 211, the output end of the motor 211 is fixedly connected to a main transmission gear 212, the main transmission gear 212 is transmission-connected to a sub-transmission gear 235 through a transmission belt 213, a feeding platform 217 and a passive wheel 219 are provided below the driving wheel 233, the feeding platform 217 is used to prevent the nickel strip from falling under the action of gravity, thereby causing bending and being unable to be transported to the cutting assembly 24, a through hole 218 is provided on the feeding platform 217, and a portion of the passive wheel 219 protrudes from the through hole 218. It extends to the top of the feeding platform 217 and corresponds to the driving wheel 233. It is explained here that a passive wheel 219 is arranged below the driving wheel 233. The passive wheel 219 part protrudes from the upper end surface of the feeding platform 217, and its protruding part contacts the lower end surface of the nickel strip, while the bottom of the driving wheel 233 contacts the upper end surface of the nickel strip, which avoids the nickel strip from being dragged directly on the surface of the feeding platform 217, reduces friction resistance, and thus improves the transmission efficiency. At the same time, the driving wheel 233 can transport nickel strips of different thicknesses by adjusting the hole three 214.

[0035] Specifically, the main transmission gear 212 is driven to rotate by starting the motor 211, and is connected to the auxiliary transmission gear 235 via the transmission belt 213, so that the auxiliary transmission gear 235 also rotates synchronously. The rotation of the auxiliary transmission gear 235 will drive the fixed shaft 234 to operate, and then the driving wheel 233 fixedly connected to the fixed shaft 234 will start to rotate. Under the action of gravity, the driving wheel 233 will exert a certain pressure on the nickel strip below. In this state, the rotating driving wheel 233 cooperates with the passive wheel 219 to automatically push the nickel strip toward the cutting component 24. The nickel strip can be transported without human intervention, which greatly improves the work efficiency.

[0036] In addition, when the driving wheel 233 only relies on its gravity to apply pressure to the nickel strip to push the nickel strip toward the cutting assembly 24, if dust or other foreign matter is attached to the surface of the nickel strip, this will cause the surface of the nickel strip to be uneven. In this case, when the nickel strip passes through the driving wheel 233, the driving wheel 233 may be slightly lifted, thereby causing the nickel strip to be unable to stably move toward the cutting assembly 24, and ultimately causing the nickel strip delivered to the cutting assembly 24 to be cut into inaccurate sizes. For this reason, in this embodiment, a fixing seat 215 is provided on the frame 21, and a threaded connection is provided on the fixing seat 215. Rod 216, the threaded rod 216 extends downward through the fixed seat 215 and is sleeved with a spring 2321, the other end of the spring 2321 abuts against the roller frame 232, and the spring 2321 applies downward pressure to the roller frame 232, so that even if there are foreign objects on the surface of the nickel strip, sufficient clamping force can be maintained between the driving wheel 233 and the nickel strip to ensure stable transmission of the nickel strip, thereby improving the cutting accuracy. At the same time, a circular groove for the spring 2321 to extend into can be set at the position corresponding to the frame 21 and the spring 2321, and the circular groove can limit the spring 2321.

[0037] In this embodiment, the cutting assembly 24 includes a cutting table 241 and a lifting cylinder 242 installed on the frame 21. The output end of the lifting cylinder 242 is fixedly connected to a knife seat 243. A cutting knife 244 for cutting the nickel strip is installed on the knife seat 243. The position of the cutting knife 244 corresponds to that of the nickel strip. The lifting cylinder 242 drives the knife seat 243 to descend, thereby moving the cutting knife 244 downward to cut the nickel strip.

[0038] In this embodiment, the multi-axis moving mechanism 3 includes a transmission screw assembly 31 and a nut seat 32 that cooperates with the transmission screw assembly 31. Preferably, the transmission screw assembly 31 is a common screw transmission pair, which is a common transmission pair structure in the field of mechanical transmission. Its transmission principle and working process are not repeated here. A mounting seat 33 is fixedly connected to the nut seat 32, and a lifting cylinder 34 is installed on the mounting seat 33. A guide rail 35 is provided below the lifting cylinder 34, and a slider 36 fixedly connected to the output end of the lifting cylinder 34 is provided on the guide rail 35. The slider 36 is used to install a fixing part 37. Preferably, the fixing part 37 is L-shaped.

[0039] In addition, a second through hole 39 is provided on the magnetic attraction portion 38. The second through hole 39 is used for the laser emitted by the laser emission lens 41 to pass through, and is also used for positioning the laser to prevent the laser from being emitted to the outside and damaging other parts.

[0040] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0041] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims

1. A nickel sheet and tab automatic cutting and welding device, characterized in that: include A jig (1), wherein the jig (1) is provided with a plurality of positioning blocks (11) for positioning the battery, and a pad block (12) for supporting the tab; A feeding and cutting mechanism (2), the feeding and cutting mechanism (2) comprising a frame (21), a feeding tray (22), a feeding guide assembly (23) and a cutting assembly (24), the feeding tray (22) being used to place the nickel strip, the feeding guide assembly (23) being used to transport the nickel strip in a directional manner to the cutting assembly (24), and the nickel strip being cut into a fixed length by the cutting assembly (24); A multi-axis moving mechanism (3), wherein a fixing member (37) is provided on the multi-axis moving mechanism (3), and a magnetic attraction portion (38) is provided on one side of the fixing member (37), wherein the magnetic attraction portion (38) is used to absorb the cut nickel sheets and transport them to the tabs through the multi-axis moving mechanism (3); A welding mechanism (4) is provided with a laser emission lens (41) for welding the electrode tab and the nickel sheet.

2. The nickel sheet and tab automatic cutting and welding device according to claim 1, characterized in that: A plurality of the positioning blocks (11) are symmetrically provided with adjustment holes (13), each of the adjustment holes (13) is provided with a locking screw (1), and the locking screw (1) passes through the adjustment hole (13) and is threadedly connected to the fixture (1).

3. The nickel sheet and tab automatic cutting and welding device according to claim 1, characterized in that: The cushion block (12) is provided with a second adjustment hole (14), the second adjustment hole (14) is provided with a second locking screw, and the second locking screw passes through the second adjustment hole (14) and is threadedly connected to the fixture (1).

4. The nickel sheet and tab automatic cutting and welding device according to claim 1, characterized in that: The feeding guide assembly (23) comprises a plurality of rollers (231) and a roller frame (232) rotatably connected to the frame (21); one end of the roller frame (232) is rotatably connected to a driving wheel (233); a third adjustment hole (214) is provided on the frame (21); one side of the driving wheel (233) is fixedly connected to a fixed shaft (234) that passes through the roller frame (232) and the third adjustment hole (214) in sequence; the other end of the fixed shaft (234) is fixedly connected to a secondary transmission gear (235); and a third adjustment hole (214) is provided on the frame (21). A motor (211) is provided, the output end of the motor (211) is fixedly connected to a main transmission gear (212), the main transmission gear (212) is transmission-connected to a secondary transmission gear (235) via a transmission belt (213), a feeding platform (217) and a passive wheel (219) are provided below the driving wheel (233), a through hole 1 (218) is provided on the feeding platform (217), a portion of the passive wheel (219) protrudes from the through hole 1 (218) to the upper end surface of the feeding platform (217), and corresponds to the driving wheel (233).

5. The nickel sheet and tab automatic cutting and welding device according to claim 4, characterized in that: The frame (21) is provided with a fixing seat (215), the fixing seat (215) is threadedly connected with a threaded rod (216), the threaded rod (216) passes through the fixing seat (215) and extends downwardly to be sleeved with a spring (2321), and the other end of the spring (2321) is in contact with the roller frame (232).

6. The nickel sheet and tab automatic cutting and welding device according to claim 1, characterized in that: The cutting assembly (24) comprises a cutting table (241) and a lifting cylinder (242) mounted on a frame (21); an output end of the lifting cylinder (242) is fixedly connected to a knife seat (243); and a cutting knife (244) for cutting nickel strips is mounted on the knife seat (243).

7. The nickel sheet and tab automatic cutting and welding device according to claim 1, characterized in that: The multi-axis moving mechanism (3) comprises a transmission screw assembly (31) and a nut seat (32) matched with the transmission screw assembly (31); a mounting seat (33) is fixedly connected to the nut seat (32); a lifting cylinder (34) is mounted on the mounting seat (33); a guide rail (35) is provided below the lifting cylinder (34); a slider (36) is provided on the guide rail (35) and is fixedly connected to the output end of the lifting cylinder (34); and the slider (36) is used to install a fixing member (37).

8. The nickel sheet and tab automatic cutting and welding device according to claim 1, characterized in that: The magnetic attraction portion (38) is provided with a second through hole (39), and the second through hole (39) is used for the laser emitted by the laser emission lens (41) to pass through.

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