A cylindrical battery current collector coating device

Abstract

The utility model discloses a cylindrical battery current collecting disc coating device, including the feeding device for conveying current collecting disc, current collecting disc has the groove that is coated, the feeding device top is provided with the manipulator for coating groove, the manipulator includes drive shaft, the cam that drives drive shaft moves up and down and with the synchronous reciprocating movement of drive shaft in groove and moves up and down and moves back and forth to the mark pen of coating groove surface, the utility model has the beneficial effect for: through the rotation of cam and drives manipulator moves up and down, and then drive the mark pen reciprocating movement and coat black in the groove surface of current collecting disc in the coating of waiting, simple structure and coating efficiency are high.

Description

Technical Field

[0001] This utility model relates to the field of battery assembly technology, and in particular to a coating device for a cylindrical battery current collector. Background Technology

[0002] In cylindrical battery assembly, a good electrical and mechanical connection must be ensured between the positive electrode tab of the battery core and the battery casing. Because the positive electrode tab is made of thin aluminum foil, direct laser welding to the battery casing can result in insufficient weld strength due to low power, while high power can lead to burn-through. A common solution in existing technology is to add a transfer device—a current collector—to balance these two requirements. One side of the current collector connects to the tab using a low-power, large-area welding method to ensure electrical connection, while the other side connects to the battery casing using high-power welding to ensure both mechanical strength and electrical connection.

[0003] In actual production, after the current collector is welded to the tab, defects such as incomplete welding or poor welding may occur. These defects need to be identified through subsequent CCD inspection. However, since the current collector is made of aluminum, the reflective material can lead to poor CCD defect identification. Therefore, the welding position of the current collector needs to be blackened to facilitate identification.

[0004] The patent application number "CN202510728053.3" discloses "a spraying device for a cylindrical battery cell current collector". Although it can spray the surface of the current collector, the structure of the device is relatively complex, the spraying efficiency is slow, and the shape and size of the current collector are different from our current collector, which cannot be adapted to our actual situation. Utility Model Content

[0005] The purpose of this invention is to provide a coating device for a cylindrical battery current collector, which can quickly and efficiently coat the current collector with black paint, facilitating subsequent battery assembly and improving production efficiency.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A coating device for a cylindrical battery current collector includes a feeding device for conveying the current collector, the current collector having a groove to be coated, and a robotic arm for coating the groove is disposed above the feeding device. The robotic arm includes a drive shaft, a cam that drives the drive shaft to move up and down, and a marker pen that moves back and forth synchronously in the groove as the drive shaft moves up and down to coat the surface of the groove.

[0007] Preferably, the feeding device includes a belt and a first motor for driving the belt to move, the collector plate is provided with a positioning hole, and the belt is provided with a positioning guide post that cooperates with the positioning hole.

[0008] Preferably, the marker pen includes a pen tip, and a slide rod is provided on the pen tip. The robotic arm also includes a bracket, and the bracket is provided with a first guide groove for the slide rod to reciprocate and a rotating part that rotates with the up and down movement of the drive shaft. The rotating part is provided with a drive groove for driving the slide rod to move.

[0009] Preferably, the rotating part includes a rotating disk and a rotating sleeve disposed on the rotating disk, and the driving groove is formed on the rotating disk; The drive shaft includes a shaft body, on which a guide plate that can extend into a rotating sleeve is provided, and a guide protrusion is provided on the side wall of the guide plate. A second guide groove that cooperates with the guide protrusion is provided on the side wall of the rotating sleeve.

[0010] Preferably, the support includes a frame, on which a second support plate is provided, and on the second support plate a first support plate is provided. A first guide groove is formed on the first support plate, and a circular positioning groove for the rotating disk to rotate is also formed on the first support plate.

[0011] Preferably, the pen tip is provided with an ink sac, the ink sac is connected to the slider via a connecting rod, the slider is mounted on the slider, and the second support plate is also provided with a third guide groove that cooperates with the slider.

[0012] Preferably, the upper end of the shaft is provided with an arc-shaped surface that contacts and engages with the cam, and the outer side of the shaft is provided with a return spring that drives it to reset.

[0013] Preferably, two robotic arms are arranged sequentially above the feeding device, and the two cams of the two robotic arms are both set on a rotating shaft, which is connected to a second motor.

[0014] Preferably, the end of the feeding device is further provided with a vision inspection unit for inspecting the coated manifold.

[0015] Preferably, the device further includes an overall frame, on which the feeding device and the robotic arm are both mounted.

[0016] The beneficial effects of this utility model are as follows: 1. The rotation of the cam drives the robotic arm to move up and down, which in turn drives the marker pen to move back and forth on the surface of the groove to be coated in the collector to apply black. The structure is simple and the coating efficiency is high.

[0017] 2. The feeding device is a belt, and positioning guide posts are installed on the belt to prevent the collector plate from shaking accidentally, thereby improving coating efficiency and ensuring coating effect.

[0018] 3. The robotic arm is equipped with a rotating part. When the drive shaft moves up and down, it will drive the rotating part to rotate back and forth, thereby driving the marker pen to move back and forth to achieve coating of the collector plate, which improves the reliability of the coating process.

[0019] 4. A vision inspection unit is also installed at the end of the feeding device to inspect the coated collection plate. When an abnormality is detected, a signal is sent in time to remind the operator to carry out maintenance in time. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the device; Figure 2 This is a structural schematic diagram of the device from another angle; Figure 3 This is a schematic diagram of the belt structure; Figure 4 This is a schematic diagram of the collector plate structure; Figure 5 This is a schematic diagram of the robotic arm. Figure 6 This is a schematic diagram of the drive shaft. Figure 7 This is a schematic diagram of the rotating part; Figure 8 This is a schematic diagram of the structure of a marker pen; Figure 9 This is a partial structural diagram of the support frame; Figure 10 This is a schematic diagram of the assembly of the stand and the marker.

[0021] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. Detailed Implementation

[0022] The present invention will now be further described with reference to the accompanying drawings.

[0023] Example 1 like Figure 4 The diagram shows the structure of the collector plate. The collector plate is circular, and six grooves 32 for coating are evenly distributed on the circular surface. A positioning hole 31 is also provided between two adjacent grooves 32. The six positioning holes 31 are also evenly distributed on the circular surface.

[0024] like Figure 1 and Figure 2As shown in the figure, the cylindrical battery current collector coating device described in this embodiment includes an integral frame 7, on which a feeding device 1 and a robot arm 2 are mounted. The feeding device 1 is used to transport the current collector 3, and the robot arm 2 is used to coat the groove 32. The robot arm 2 is located above the feeding device 1.

[0025] like Figure 5 As shown, the robotic arm 2 includes a drive shaft 21, a cam 53, and a marker pen 22. During rotation, the cam 53 drives the drive shaft 21 to move up and down, which in turn drives the marker pen 22 to move back and forth. When the feeding device 1 moves and transports the collecting plate 3 to the designated position (i.e., directly below the marker pen 22), the feeding device 1 stops transporting, and the cam 53 rotates to drive the marker pen 22 to move, so that the marker pen 22 coats the surface of the groove 32.

[0026] In this embodiment, in order to improve coating efficiency, two robotic arms 2 are arranged sequentially above the feeding device 1. Each robotic arm 2 has three markers 22 evenly distributed inside, which correspond to three non-adjacent grooves 32 in the collection plate 3. The distance between the two robotic arms 2 is the same as the distance between the two collection plates 3 on the feeding device 1. When the feeding device 1 stops conveying, both robotic arms 2 can perform coating work.

[0027] The two cams 53 in the two robotic arms 2 are coaxially set and are both mounted on the rotating shaft 52. The rotating shaft 52 is connected to the second motor 51, which drives the two cams 53 to rotate synchronously, so that the two robotic arms 2 work synchronously.

[0028] A vision inspection unit 6 is also provided on the overall frame 7. The vision inspection unit 6 is located at the end of the feeding device 1 and is used to inspect the coated collection tray 3. When a defective product is detected, an alarm signal is issued in time to remind the operator to stop the machine for maintenance. The vision inspection unit 6 can be a camera, and its detection principle is a conventional technology, which will not be described in detail in this embodiment.

[0029] like Figure 3 As shown, the feeding device 1 includes a belt 12 and a first motor 11 that drives the belt 12 to move. Multiple positioning guide posts 13 are provided on the upper surface of the belt 12. Adjacent positioning guide posts 13 are paired together and cooperate with two of the six positioning holes 31 in each collecting plate 3 to prevent the collecting plate 3 from shaking unexpectedly during the conveying and coating process.

[0030] like Figure 5 As shown, the robotic arm 2 includes a support 23, on which a marker pen 22 and a rotatable rotating part 24 are mounted, and the lower end of the drive shaft 21 extends into the rotating part 24.

[0031] like Figure 8As shown, the marker pen 22 includes a pen tip 221, an ink sac 225 for supplying ink is installed on the pen tip 221, a connecting rod 222 is integrally provided on the ink sac 225, a slider 223 is provided at the end of the connecting rod 222, and a sliding rod 224 is provided on the slider 223.

[0032] like Figure 7 As shown, the rotating part 24 includes a rotating disk 243, a rotating sleeve 241 is provided on the rotating disk 243, three driving grooves 244 are evenly distributed on the rotating disk 243, and two second guide grooves 242 are evenly distributed on the side wall of the rotating sleeve 241.

[0033] like Figure 9 and Figure 10 As shown, the bracket 23 includes a frame 231, which is mounted on the overall frame 7. A second support plate 232 is provided on the frame 231, and three third guide grooves 233 are evenly distributed on the second support plate 232. The slider 223 extends into the third guide grooves 233, and the third guide grooves 233 guide its movement.

[0034] A first support plate 234 is also provided on the second support plate 232. Three first guide grooves 236 are evenly distributed on the first support plate 234. The sliding rod 224 extends into the first guide grooves 236, which guide its movement. A circular receiving groove 235 is also provided on the first support plate 234, and the rotating disk 243 can be installed in the receiving groove 235, which guides its rotation.

[0035] like Figure 6 As shown, the drive shaft 21 includes a shaft body 211. A guide plate 217 is provided at the lower end of the shaft body 211. Two guide protrusions 218 are symmetrically provided on the side wall of the guide plate 217. The guide plate 217 extends into the rotating sleeve 241. At the same time, the two guide protrusions 218 are located in two second guide grooves 242 respectively. When the drive shaft 21 moves up and down, the guide protrusions 218 move up and down in the second guide grooves 242, thereby driving the rotating sleeve 241 and the rotating disk 243 to rotate.

[0036] The upper end of the shaft 211 is provided with an arc-shaped surface 214 that contacts and engages with the cam 53, and a return spring is provided on the outer side of the shaft 211 to drive it to return to its original position. During the rotation of the cam 53 from the side with the shorter diameter to the side with the longer diameter, it will continuously press down on the arc-shaped surface 214, causing the shaft 211 to move continuously downward; while during the rotation of the cam 53 from the side with the longer diameter to the side with the shorter diameter, under the action of the return spring, it will cause the shaft 211 to move continuously upward, thereby realizing the continuous movement of the shaft 211.

[0037] In this embodiment, a fixed base 4 is also provided near the robot arm 2. The shaft 211 passes through the fixed base 4, which guides its movement. A limiting plate 216 is provided on the shaft 211 to limit its upward movement. When the shaft 211 moves to its limit position, the limiting plate 216 contacts the fixed base 4, preventing the shaft 211 from moving further upward. The return spring includes a first spring 212 and a second spring 213 arranged from top to bottom. A baffle 215 is provided on the shaft 211. The two ends of the first spring 212 abut against the baffle 215 and the fixed base 4, respectively. The second spring 213 is located inside the rotating sleeve 241, and its two ends abut against the guide plate 217 and the bottom surface of the rotating sleeve 241, respectively.

[0038] During use, the feeding device 1 delivers the collecting plate 3 to the coating position and then stops. The second motor 51 then rotates, causing the cam 53 to rotate as well, which in turn causes the drive shaft 21 to move up and down. As the drive shaft 21 moves down, the guide protrusion 218 and the second guide groove 242 work together to rotate the rotating sleeve 241 and the rotating disk 243. During this process, the drive groove 244 rotates synchronously, causing the slide rod 224 to move within the first guide groove 236 (while the slide rod 224 moves, it also drives the pen tip 221 to move within the groove 32), thus coating the collecting plate 3. To ensure smooth movement of the slide rod 224, a third guide groove 233 is also provided to guide the slider 223.

[0039] During a full rotation cycle of cam 53, drive shaft 21 moves down in half a cycle and up in the other half. When it moves down, it completes the coating of the groove, and when it moves up, it resets to prepare for the next coating.

[0040] The above embodiments are not intended to limit the shape, material, structure, etc. of this utility model in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the protection scope of this utility model.

[0041] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of this utility model and to simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0042] If the terms "first" or "second" are used in this document to define the components, those skilled in the art should know that the use of "first" or "second" is merely for the convenience of describing this utility model and simplifying the description, and unless otherwise stated, the above terms have no special meaning.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features. However, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A coating apparatus for a cylindrical battery current collector, comprising a feeding device for conveying the current collector, the current collector having a coating groove, characterized in that: Above the feeding device is a robotic arm for coating the groove. The robotic arm includes a drive shaft, a cam that drives the drive shaft to move up and down, and a marker that moves back and forth synchronously in the groove as the drive shaft moves up and down to coat the surface of the groove.

2. The cylindrical battery current collector coating device according to claim 1, characterized in that, The feeding device includes a belt and a first motor that drives the belt to move. The collector plate has a positioning hole, and the belt is provided with a positioning guide post that cooperates with the positioning hole.

3. The cylindrical battery current collector coating device according to claim 1, characterized in that, The marker pen includes a pen tip, and a slide rod is provided on the pen tip. The robotic arm also includes a bracket, and the bracket is provided with a first guide groove for the slide rod to reciprocate and a rotating part that rotates with the up and down movement of the drive shaft. The rotating part is provided with a drive groove for driving the slide rod to move.

4. The cylindrical battery current collector coating device according to claim 3, characterized in that, The rotating part includes a rotating disk and a rotating sleeve disposed on the rotating disk, and the driving groove is formed on the rotating disk; The drive shaft includes a shaft body, on which a guide plate that can extend into a rotating sleeve is provided, and a guide protrusion is provided on the side wall of the guide plate. A second guide groove that cooperates with the guide protrusion is provided on the side wall of the rotating sleeve.

5. The cylindrical battery current collector coating device according to claim 4, characterized in that, The support includes a frame, on which a second support plate is provided, and on the second support plate a first support plate is provided. A first guide groove is formed on the first support plate, and a circular positioning groove for the rotating disk to rotate is also formed on the first support plate.

6. The cylindrical battery current collector coating device according to claim 5, characterized in that, The pen tip is equipped with an ink sac, which is connected to the slider via a connecting rod. The slider is mounted on the slider, and the second support plate is also provided with a third guide groove that cooperates with the slider.

7. The cylindrical battery current collector coating device according to claim 4, characterized in that, The upper end of the shaft is provided with an arc-shaped surface that contacts and engages with the cam, and the outer side of the shaft is provided with a return spring that drives it to reset.

8. The cylindrical battery current collector coating device according to claim 1, characterized in that, Two robotic arms are arranged sequentially above the feeding device. The two cams of the two robotic arms are both mounted on a rotating shaft, which is connected to a second motor.

9. The cylindrical battery current collector coating device according to claim 1, characterized in that, The end of the feeding device is also equipped with a vision inspection unit for inspecting the coated manifold.

10. The cylindrical battery current collector coating device according to claim 1, characterized in that, It also includes an overall frame, on which the feeding device and the robotic arm are both mounted.

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