Copper sheet positioning structure and side copper sheet welding machine comprising same

Abstract

The invention discloses a copper sheet positioning structure and a side copper sheet welding machine comprising the same, and relates to the technical field of mobile phone part welding, the copper sheet positioning structure comprises a positioning module, the positioning module comprises a first electric sliding rail, a sliding seat is slidably connected to the first electric sliding rail, one end of the sliding seat is provided with a correction module, and the other end of the sliding seat is provided with a positioning assembly; the positioning assembly comprises a lifting air cylinder and a lifting sliding rail, the lifting air cylinder and the lifting sliding rail are arranged on the two sides of the sliding base respectively, a support is arranged on the top of the lifting air cylinder and the top of the lifting sliding rail jointly, a turnover rod is rotationally connected to the support, a mounting base is arranged on the turnover rod, and a positioning base is arranged at the end of the mounting base. And after welding is completed, the welding position is rapidly cooled, heat is prevented from being transferred to the mobile phone middle frame in time, and in addition, when the copper sheet is adsorbed and transferred, impurities are effectively prevented from being attached to an adsorption head to affect accurate positioning of the copper sheet.

Description

Technical Field

[0001] This invention relates to the field of mobile phone component welding technology, specifically to a copper sheet positioning structure and a side copper sheet welding machine including the structure. Background Technology

[0002] In modern manufacturing, copper sheets are widely used in many fields such as electronics, electrical engineering, and automobiles as an important conductive and thermal conductive material. For example, in electronic products such as the signal receiving module of a 5G mobile phone, there is a copper sheet structure for signal transmission, which needs to be welded to other components inside the mobile phone casing.

[0003] Chinese patent application number 202120007585.5 discloses a front copper sheet welding machine, including a frame, a first Y-axis module, a three-axis laser welder, a copper sheet fixing mechanism, a robot, and a feeding mechanism. The first Y-axis module is arranged in two parallel sets, and each first Y-axis module is equipped with a feeding platform. A robot is located at one end of each first Y-axis module. The robot moves the copper sheet from the feeding mechanism to the feeding platform. The three-axis laser welding mechanism and the copper sheet fixing mechanism span the two sets of first Y-axis modules. The two sets of first Y-axis modules work together with a copper sheet fixing mechanism and a three-axis laser welder to perform the copper sheet welding operation. However, during use, the welding will produce sparks and cause metal shavings to adhere to the inside of the mobile phone casing.

[0004] In addition, due to the high temperature generated during welding, the heat conducted by the copper sheet is easily transferred to the phone casing, causing localized heat deformation of the mid-frame and affecting subsequent assembly. Furthermore, during the transfer of the copper sheet using negative pressure adsorption, the adsorption head is prone to contamination with impurities, which reduces the adsorption force on the copper sheet and affects the accuracy of the copper sheet positioning. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the existing defects and provide a copper sheet positioning structure and a side copper sheet welding machine including the structure. During welding, it effectively prevents metal spatter and quickly cools and dissipates heat at the welded area after welding to prevent heat transfer to the mobile phone frame in time. In addition, during the adsorption and transfer of copper sheets, it effectively prevents impurities from adhering to the adsorption head and affecting the accurate positioning of the copper sheets. It can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a copper sheet positioning structure, comprising a positioning module, wherein the positioning module comprises a first electric slide rail, a slide block is slidably connected on the first electric slide rail, a correction module is provided at one end of the slide block, and a positioning component is provided at the other end of the slide block; The positioning component includes a lifting cylinder and a lifting slide rail, which are respectively located on both sides of the slide block. The top of the lifting cylinder and the lifting slide rail are provided with a support. A flipping rod is rotatably connected to the support. One end of the flipping rod is drivenly connected to a flipping motor located at one end of the support. The flipping rod is provided with a mounting seat. The end of the mounting seat is provided with a positioning seat. The positioning seat includes a pressure seat and a pressure claw. The positioning base is equipped with an adsorption component for adsorbing L-shaped copper sheets and an auxiliary component for assisting positioning.

[0007] Preferably, the pressure claw is located at the end of the pressure base, and an L-shaped copper sheet is attached to the end of the pressure claw. The pressure claw has a wedge-shaped structure and an angle between it and the pressure base.

[0008] Preferably, the adsorption assembly includes a control groove, in which a piston is slidably fitted. The top of the piston is provided with a connecting rod, and the top of the connecting rod is provided with a connecting seat. The end of the connecting seat is fixedly connected to the telescopic end of an electromagnetic telescopic part embedded in a pressure seat. The top of the pressure claw is provided with a cylindrical seat communicating with the control groove. The end of the cylindrical seat is provided with a negative pressure control valve. A negative pressure pipe is connected to the negative pressure control valve. The end of the negative pressure pipe is provided with a suction nozzle, which vertically penetrates the end of the pressure claw.

[0009] Preferably, the suction nozzle is provided with a collection assembly for collecting flying debris. The collection assembly includes an adsorption control valve, the port of which is provided with a filter element. The bottom of the filter element is connected to an adsorption seat, which is a hollow structure and has a transparent bottom.

[0010] Preferably, the auxiliary component includes movable seats symmetrically arranged on both sides, the movable seats being slidably connected to the end side of the pressure claw, a hollow rod being fixedly passed through the movable seats, a limiting seat being movably sleeved on the top of the hollow rod, the limiting seat being located on the end side of the pressure claw, a spring being sleeved on the outside of the hollow rod, an auxiliary seat being provided at the bottom of the hollow rod, and a pressure sensor being provided at the bottom of the auxiliary seat.

[0011] Preferably, the auxiliary seat is a hollow structure that communicates with the hollow rod. The top of the auxiliary seat near the pressure claw has an inclined surface with air holes. The top of the hollow rod has a positive pressure pipe, and the end of the positive pressure pipe is connected to the port of a positive pressure control valve located on the side of the cylinder seat.

[0012] The present invention also discloses a side copper sheet welding machine, including the copper sheet positioning structure as described above, and a frame. The top of the frame is provided with a loading and unloading module, a vision positioning module, a carrier tape feeding module, a material picking module, a transfer module, an NG material throwing module, a detection module, a bearing module and a laser spot welding module. The positioning module is located at the top of the frame and between the load-bearing module and the laser spot welding module.

[0013] Furthermore, the bearing module includes a second electric slide rail, on which a support seat is provided, on which a rotating seat is provided, on which a suction cup is provided, and on which a positioning pin is provided, and one end of the rotating seat is connected to a rotating motor located on the side of the support seat.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. This invention utilizes a collection component at the suction nozzle to open the adsorption control valve during spot welding, thereby creating negative pressure on the adsorption seat. This draws in the metal shavings generated during welding and collects them through a filter element, preventing shavings from adhering to the frame and affecting the appearance or entering the welding area and reducing the welding quality. Furthermore, the filter element can be replaced periodically to maintain the adsorption force.

[0015] 2. After welding is completed, the negative pressure control valve is closed and the positive pressure control valve is opened. The electromagnetic telescopic part drives the piston to move downward to supply air to the cylinder seat. The airflow enters the auxiliary seat through the positive pressure pipe and the hollow rod, and is discharged from the air hole on the inclined surface, which quickly cools the copper sheet, blocks the heat transfer to the middle frame, and protects the components inside the middle frame from thermal deformation.

[0016] 3. When the pressure sensor detects that the pressure value is lower than the threshold, and it is determined that there are impurities on the adsorption surface of the pressure claw, the adsorption component stops working, the material handling module removes the copper sheet, and after the auxiliary seat extends, the piston reciprocates to achieve the reciprocating air intake and exhaust through the air hole. The airflow impact cleans the end face of the pressure claw, ensuring that the subsequent copper sheet adsorption and positioning are normal. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the axial structure of the present invention; Figure 3 This is a schematic diagram showing the positional relationship between the positioning module and the bearing module of the present invention; Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 This is a schematic diagram of the positional and bearing modules of the present invention from an isometric perspective. Figure 6 For the present invention Figure 5 Enlarged structural diagram at point B.

[0018] In the diagram: 1. Frame; 11. Loading / unloading module; 12. Vision positioning module; 13. Carrier belt feeding module; 14. Picking module; 15. Transfer module; 16. NG throwing module; 17. Detection module; 2. Positioning module; 21. First electric slide rail; 22. Slide seat; 23. Calibration module; 24. Positioning assembly; 241. Lifting cylinder; 242. Lifting slide rail; 243. Support; 244. Tilting rod; 245. Tilting motor; 246. Mounting base; 247. Pressure base; 248. Pressure claw; 2471. Control slot; 2472. Piston; 2473. Connecting rod; 2 474. Connecting seat; 2475. Electromagnetic telescopic part; 2476. Cylinder seat; 2477. Negative pressure control valve; 2478. Negative pressure pipe; 2479. Suction nozzle; 2481. Adsorption control valve; 2482. Filter element; 2483. Adsorption seat; 2484. Positive pressure control valve; 2485. Positive pressure pipe; 2486. Movable seat; 2487. Hollow rod; 2488. Limit seat; 2489. Spring; 2490. Auxiliary seat; 3. Bearing module; 31. Second electric slide rail; 32. Support seat; 33. Rotating seat; 34. Suction cup; 35. Rotating motor; 4. Laser spot welding module. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1

[0021] Please see Figure 1-6 This embodiment provides a technical solution: a copper sheet positioning structure, including a positioning module 2, the positioning module 2 including a first electric slide rail 21, a slide block 22 slidably connected on the first electric slide rail 21, a correction module 23 provided at one end of the slide block 22, and a positioning component 24 provided at the other end of the slide block 22.

[0022] Specifically, the first electric slide rail 21 drives the correction module 23 and the positioning component 24 to move horizontally and linearly by driving the slide block 22 to slide linearly. The correction module 23 is used to correct the position of the copper sheet placed on the positioning component 24.

[0023] The positioning component 24 includes a lifting cylinder 241 and a lifting slide rail 242. The lifting cylinder 241 and the lifting slide rail 242 are respectively located on both sides of the slide block 22. The top of the lifting cylinder 241 and the lifting slide rail 242 are jointly provided with a support 243. A flipping rod 244 is rotatably connected to the support 243. One end of the flipping rod 244 is connected to a flipping motor 245 located at one end of the support 243. A mounting seat 246 is provided on the flipping rod 244. A positioning seat is provided at the end of the mounting seat 246. The positioning seat includes a pressure seat 247 and a pressure claw 248. The pressure claw 248 is located at the end of the pressure seat 247. An L-shaped copper sheet is attached to the end of the pressure claw 248. The pressure claw 248 has a wedge-shaped structure and has an angle with the pressure seat 247.

[0024] Specifically, the lifting cylinder 241, in cooperation with the lifting slide rail 242, drives the support 243 to lift and lower, thereby lifting and lowering the pressure claw 248. The flipping motor 245 drives the flipping rod 244 to rotate, which can drive the pressure seat 247 and the pressure claw 248 to rotate 180° through the mounting base 246. The pressure claw 248 is inclined downward relative to the horizontally set pressure seat 247.

[0025] The positioning base is equipped with an adsorption component for adsorbing L-shaped copper sheets and an auxiliary component for assisting positioning.

[0026] The adsorption assembly includes a control groove 2471, a piston 2472 that slides within the control groove 2471, a connecting rod 2473 at the top of the piston 2472, a connecting seat 2474 at the top of the connecting rod 2473, and an end of the connecting seat 2474 that is fixedly connected to the telescopic end of the electromagnetic telescopic part 2475 embedded in the pressure seat 247. The top of the pressure claw 248 is provided with a cylinder seat 2476 that communicates with the control groove 2471, and the end of the cylinder seat 2476 is provided with a negative pressure control valve 2477. A negative pressure pipe 2478 is connected to the negative pressure control valve 2477, and the end of the negative pressure pipe 2478 is provided with a suction nozzle 2479 that vertically penetrates the end of the pressure claw 248.

[0027] Specifically, the suction end of the suction nozzle 2479 is flush with the suction surface of the pressure claw 248. The piston 2472 is initially located at the bottom of the control groove 2471. When the negative pressure control valve 2477 is open, the extension end of the electromagnetic telescopic part 2475 extends, causing the connecting seat 2474 and the connecting rod 2473 to move upward. The piston 2472 is pulled upward, making the control groove 2471 negative pressure. This, in turn, makes the suction nozzle 2479 negative pressure through the cylinder seat 2476 and the negative pressure tube 2478, thereby achieving the adsorption of the copper sheet. The normally adsorbed copper sheet is in contact with the suction end of the suction nozzle 2479 and the suction surface of the pressure claw 248.

[0028] The auxiliary component includes movable seats 2486 symmetrically arranged on both sides. The movable seats 2486 are slidably connected to the end side of the pressure claw 248. A hollow rod 2487 is fixedly inserted through the movable seats 2486. A limit seat 2488 is movably sleeved on the top of the hollow rod 2487. The limit seat 2488 is located on the end side of the pressure claw 248. A spring 2489 is sleeved on the outside of the hollow rod 2487. An auxiliary seat 2490 is provided at the bottom of the hollow rod 2487. A pressure sensor is provided at the bottom of the auxiliary seat 2490.

[0029] Specifically, in the initial state, when the spring 2489 is in its normally extended state, the auxiliary seat 2490 will extend the pressure claw 248. When the pressure claw 248 is located on one side of the calibration module 23, the pressure claw 248 is in an upward-sloping state, and the bottom of the auxiliary seat 2490 is facing upward. During the process of placing the copper sheet at the end of the pressure claw 248, the copper sheet first contacts the auxiliary seat 2490. At this time, when the adsorption component adsorbs the copper sheet, it will first overcome the elastic force of the spring 2489. When the copper sheet is in contact with the surface of the pressure claw 248, the spring 2489 is in a compressed state, and the bottom surface of the auxiliary seat 2490 is flush with the adsorption surface of the pressure claw 248. When the pressure sensor detects that the pressure value it receives is in the normal pressure threshold state, it indicates that the adsorption is normal.

[0030] This embodiment also discloses a side copper sheet welding machine, including the copper sheet positioning structure described above, and also includes a frame 1. The top of the frame 1 is provided with a loading and unloading module 11, a vision positioning module 12, a carrier belt feeding module 13, a material picking module 14, a transfer module 15, an NG throwing module 16, a detection module 17, a bearing module 3, and a laser spot welding module 4. The positioning module 2 is located on the top of the frame 1 and between the bearing module 3 and the laser spot welding module 4.

[0031] The load-bearing module 3 includes a second electric slide rail 31, a support base 32 on the second electric slide rail 31, a rotating base 33 on the support base 32, a suction cup 34 on the rotating base 33, a positioning pin on the suction cup 34, and one end of the rotating base 33 is connected to a rotating motor 35 located on the side of the support base 32.

[0032] Specifically, the loading and unloading module 11 is divided into a loading section and an unloading section, used to transport the middle frame before and after welding. The vision positioning module 12 uses CCD vision positioning to detect the state of the copper sheet. The carrier tape feeding module 13 is used for feeding the copper sheet carrier tape. The picking module 14 is used to pick up the copper sheet from the carrier tape feeding module 13 and transfer the copper sheet to the vision positioning module 12. The transfer module 15 adopts a robotic arm with a vacuum suction cup for transfer during the loading and unloading process of the middle frame. The NG throwing module 16 is used to transfer the middle frame that fails the welding test after welding. The detection module 17 is used to detect the welding position of the middle frame after welding. The bearing module 3 is used to support the middle frame. The suction cup 34 on the bearing module 3 is used to adsorb the middle frame and perform vertical positioning of the middle frame. At the same time, the positioning pin on the bearing module 3 performs horizontal positioning of the middle frame. The laser spot welding module 4 is preferably a nanosecond laser welding device.

[0033] In use, the transfer module 15 picks up the middle frame to be welded from the loading section of the loading and unloading module 11 and transfers it to the suction cup 34 on the bearing module 3. The suction cup 34 and positioning pins are used to position the middle frame. At the same time, the picking module 14 picks up the copper sheet from the carrier tape feeding module 13. The picking module 14 moves the copper sheet to the vision positioning module 12. After CCD vision alignment, the copper sheet is placed on the pressure claw 248. At the same time, the negative pressure control valve 2477 is opened, and the electromagnetic telescopic part 2475 drives the piston 2472 to move upward, so that the suction nozzle 2479 generates suction force to pick up the copper sheet. At the same time, the auxiliary seat 2490 retracts, the spring 2489 is compressed, and the auxiliary seat 2490 abuts against the surface of the copper sheet. Then, the calibration module 23 drives... The calibration push plate calibrates the copper sheet. After calibration, the rotating seat 33 is rotated 90 degrees by the rotating motor 35, so that the side to be welded inside the middle frame rotates to the bottom. The second electric slide rail 31 drives the middle frame to move closer to the pressure claw 248. After the middle frame moves to the designated position, the rotating rod 244 is rotated 180 degrees by the rotating motor 245, so that the end of the pressure claw 248 drives the copper sheet to rotate 180 degrees. The copper sheet is then just attached to the position to be welded inside the middle frame and corresponds to the position of the laser spot welding module 4. The laser spot welding module 4 is equipped with a CCD. After the copper sheet is attached, the CCD is used to detect the state of the copper sheet. If the detection is OK, spot welding is performed. Otherwise, the middle frame is regarded as NG and is transferred by the transfer module 15 and then thrown by the NG throwing module 16.

[0034] After welding is completed, the welded middle frame is moved to the position of the detection module 17. The detection module 17 uses a detection camera to detect the welding status of the copper sheet of the middle frame. If the detection is OK, it is transferred to the unloading section of the loading and unloading module 11 by the transfer module 15 for unloading. Otherwise, the middle frame is discarded as NG.

[0035] Example 2

[0036] However, during the spot welding of copper sheets by the laser spot welding module 4, metal spatter is generated. The spatter may adhere to the surface of the middle frame, affecting the appearance, or enter the welding area to form micropores, reducing the weld sealing and strength. Therefore, the following improvements are made: The suction nozzle 2479 is equipped with a collection assembly for collecting flying debris. The collection assembly includes an adsorption control valve 2481. The port of the adsorption control valve 2481 is equipped with a filter element 2482. The bottom of the filter element 2482 is connected to an adsorption seat 2483. The adsorption seat 2483 has a hollow structure and is transparent at the bottom.

[0037] Specifically, when it is not necessary to use negative pressure to provide adsorption force to the copper sheet, the adsorption control valve 2481 is opened, so that the filter element 2482 and the adsorption seat 2483 are in a negative pressure state, and air is drawn in. During the spot welding process, the flying debris generated is drawn into the adsorption seat 2483 and collected in the filter element 2482.

[0038] During use, while spot welding is being performed, the negative pressure control valve 2477 remains open and the positive pressure control valve 2484 remains closed, thus opening the adsorption control valve 2481. This means that the negative pressure pipe 2478 is connected to the outside world through the adsorption seat 2483. At the same time, the negative pressure state in the control tank 2471 is converted into the suction force at the adsorption seat 2483. Thus, when metal shavings are generated during spot welding, the adsorption force generated by the adsorption seat 2483 is quickly drawn into the filter element 2482 for collection. The airflow filtered by the filter element 2482 passes through the adsorption control valve 2481 into the suction nozzle 2479, and then passes through the adsorption seat 2483, the negative pressure control valve 2477, and the cylinder seat 2476 into the control tank 2471. The suction force of the adsorption seat 2483 is maintained by periodically replacing the filter element 2482.

[0039] It should be noted that after the negative pressure of the control groove 2471 disappears, the reverse force of the compressed spring 2489 is used to make the auxiliary seat 2490 press tightly against the copper sheet, thereby achieving auxiliary fixation of the copper sheet.

[0040] Example 3

[0041] In addition, the heat conducted by the copper sheet during welding is easily transferred to the middle frame, causing some parts inside the middle frame to deform due to heat, which affects subsequent assembly. Therefore, the following improvements are made: The auxiliary seat 2490 is a hollow structure that communicates with the hollow rod 2487. The top of the auxiliary seat 2490 near the pressure claw 248 has an inclined surface with air holes. The top of the hollow rod 2487 is provided with a positive pressure pipe 2485, and the end of the positive pressure pipe 2485 is connected to the port of the positive pressure control valve 2484 located on the side of the cylinder seat 2476.

[0042] Specifically, upon completion of welding, the negative pressure control valve 2477 is closed and the positive pressure control valve 2484 is open. Based on Embodiment 2, the piston 2472 is located at the top of the control groove 2471. The negative pressure inside the control groove 2471 is completely converted into suction force at the adsorption seat 2483. The piston 2472 moves downward by contracting the extension end of the electromagnetic telescopic part 2475, thereby supplying air to the cylinder seat 2476. At the same time, the airflow enters the hollow rod 2487 through the positive pressure pipe 2485, and finally enters the auxiliary seat 2490, and is discharged through the air hole. The discharged airflow can quickly dissipate heat from the copper sheet, thereby achieving rapid cooling of the copper sheet after spot welding, blocking heat transfer, and protecting the components inside the frame.

[0043] Example 4

[0044] In addition, after prolonged use, the adsorption surface of the pressure claw 248 is prone to being contaminated with solder slag or other impurities, which reduces the adsorption force on the copper sheet and decreases the pressure between the copper sheet and the auxiliary seat 2490, thereby affecting the positioning accuracy of the copper sheet.

[0045] Therefore, when the copper sheet is placed on the pressure claw 248 by the material handling module 14 and the copper sheet is adsorbed by the adsorption component, if the pressure sensor detects that the pressure value is less than the set pressure threshold, it will actively determine that there is a gap between the copper sheet and the auxiliary seat 2490, that is, the adsorption end face of the pressure claw 248 is contaminated with impurities. At this time, the adsorption component stops working, and the material handling module 14 removes the copper sheet from the pressure claw 248. At the same time, the auxiliary seat 2490 extends from the end of the pressure claw 248 after the spring 2489 has fully reset. The air holes on the inclined surface of seat 2490 face the adsorption end face of pressure claw 248. At this time, the reciprocating extension and retraction of the extension end of electromagnetic extension part 2475 causes piston 2472 to slide up and down repeatedly, while closing the negative pressure control valve 2477 and opening the positive pressure control valve 2484, thereby realizing the reciprocating intake and exhaust of air through the air holes. The exhaust airflow is used to intermittently impact the end face of pressure claw 248, thereby cleaning the end face of pressure claw 248. After cleaning, the copper sheet is placed on pressure claw 248 for subsequent positioning.

[0046] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A copper sheet positioning structure, comprising a positioning module (2), characterized in that, The positioning module (2) includes a first electric slide rail (21), on which a slide block (22) is slidably connected. One end of the slide block (22) is provided with a calibration module (23), and the other end of the slide block (22) is provided with a positioning component (24). The positioning component (24) includes a lifting cylinder (241) and a lifting slide rail (242). The lifting cylinder (241) and the lifting slide rail (242) are respectively located on both sides of the slide block (22). The top of the lifting cylinder (241) and the lifting slide rail (242) are provided with a support (243). A flipping rod (244) is rotatably connected to the support (243). One end of the flipping rod (244) is connected to a flipping motor (245) located at one end of the support (243). A mounting seat (246) is provided on the flipping rod (244). A positioning seat is provided at the end of the mounting seat (246). The positioning seat includes a pressure seat (247) and a pressure claw (248). The positioning base is equipped with an adsorption component for adsorbing L-shaped copper sheets and an auxiliary component for assisting positioning.

2. The copper sheet positioning structure according to claim 1, characterized in that: The pressure claw (248) is located at the end of the pressure base (247). An L-shaped copper sheet is attached to the end of the pressure claw (248). The pressure claw (248) has a wedge-shaped structure and an angle between it and the pressure base (247).

3. The copper sheet positioning structure according to claim 1, characterized in that: The adsorption assembly includes a control groove (2471), a piston (2472) that slides within the control groove (2471), a connecting rod (2473) at the top of the piston (2472), a connecting seat (2474) at the top of the connecting rod (2473), and an end of the connecting seat (2474) that is fixedly connected to the telescopic end of an electromagnetic telescopic part (2475) embedded in a pressure seat (247). The top of the pressure claw (248) is provided with a cylinder seat (2476) that communicates with the control groove (2471), and the end of the cylinder seat (2476) is provided with a negative pressure control valve (2477). A negative pressure pipe (2478) is connected to the negative pressure control valve (2477), and the end of the negative pressure pipe (2478) is provided with a suction nozzle (2479). The suction nozzle (2479) vertically penetrates the end of the pressure claw (248).

4. The copper sheet positioning structure according to claim 3, characterized in that: The suction nozzle (2479) is provided with a collection assembly for collecting flying debris. The collection assembly includes an adsorption control valve (2481). The port of the adsorption control valve (2481) is provided with a filter element (2482). The bottom of the filter element (2482) is connected to an adsorption seat (2483). The adsorption seat (2483) is a hollow structure and has a transparent bottom.

5. The copper sheet positioning structure according to claim 1, characterized in that: The auxiliary component includes movable seats (2486) symmetrically arranged on both sides. The movable seats (2486) are slidably connected to the end side of the pressure claw (248). A hollow rod (2487) is fixedly inserted through the movable seats (2486). A limiting seat (2488) is movably sleeved on the top of the hollow rod (2487). The limiting seat (2488) is located on the end side of the pressure claw (248). A spring (2489) is sleeved on the outside of the hollow rod (2487). An auxiliary seat (2490) is provided at the bottom of the hollow rod (2487). A pressure sensor is provided at the bottom of the auxiliary seat (2490).

6. The copper sheet positioning structure according to claim 5, characterized in that: The auxiliary seat (2490) is a hollow structure that communicates with the hollow rod (2487). The top of the auxiliary seat (2490) near the pressure claw (248) has an inclined surface with air holes. The top of the hollow rod (2487) has a positive pressure pipe (2485). The end of the positive pressure pipe (2485) is connected to the port of the positive pressure control valve (2484) located on the side of the cylinder seat (2476).

7. A side copper sheet welding machine, comprising the copper sheet positioning structure as described in any one of claims 1-6, characterized in that, It also includes a frame (1), the top of which is provided with a loading and unloading module (11), a vision positioning module (12), a carrier belt feeding module (13), a material picking module (14), a transfer module (15), an NG throwing module (16), a detection module (17), a bearing module (3) and a laser spot welding module (4). The positioning module (2) is located on the top of the frame (1) and between the bearing module (3) and the laser spot welding module (4).

8. The side copper sheet welding machine according to claim 7, characterized in that: The bearing module (3) includes a second electric slide rail (31), a support seat (32) is provided on the second electric slide rail (31), a rotating seat (33) is provided on the support seat (32), a suction cup (34) is provided on the rotating seat (33), a positioning pin is provided on the suction cup (34), and one end of the rotating seat (33) is connected to a rotating motor (35) located on the side of the support seat (32).

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