Disc type laser welding machine

Abstract

The utility model discloses a disc type laser welding machine which comprises a machine frame, a rotating disc, and a terminal pressing machine, a laser peeling machine, a laser welding machine, a welding spot visual detection machine and a performance detection machine which are sequentially arranged on the machine frame along the circumferential direction of the rotating disc, the terminal pressing machine, the laser peeler and the laser welding machine are all installed on the rack in the mode that the terminal pressing machine, the laser peeler and the laser welding machine can move towards the rotating disc and can ascend and descend vertically. The welding spot visual detection machine and the performance detection machine are installed on the rack in the mode that the welding spot visual detection machine and the performance detection machine can ascend and descend vertically. A peeling visual collecting device located outside the rotating disc is arranged between the laser peeling machine and the laser welding machine and installed on the machine frame in an up-down moving mode. And placing tables and stator clamping hands are arranged between the peeling visual acquisition device and the laser welding machine, between the welding spot visual detection machine and the performance detection machine and between the performance detection machine and the terminal pressing machine. Compared with the prior art, the automation degree is high, the working efficiency is high, and the rework rate is low.

Description

Technical Field

[0001] This utility model relates to the field of stator processing, and in particular to a disc-type laser welding machine. Background Technology

[0002] During stator manufacturing, the stator is first fabricated independently and then placed in an injection mold to be integrally injection molded with the motor housing. The existing stator includes an insulating frame, winding coils, a stator core, and connectors. The insulating frame has a circular ring structure with trip posts extending from its end face. The winding coils are wound on the insulating frame, and the stator core is located on the outer surface of the insulating frame. The winding coils are connected in series via winding connecting wires, which are wound around the trip posts. The winding connecting wires are electrically connected to the connectors. Copper wires are commonly used for the winding connecting wires. The connectors have several stator pins. The first end of each stator pin is inserted into a trip post, and the second end extends out of the trip post. The first end of each stator pin has an integrally formed winding terminal outside the trip post. The winding terminal has two opposing pressure plates, with a through-channel extending circumferentially along the insulating frame between the two pressure plates.

[0003] During processing, the winding connecting wire is first manually wound around the outside of the trip pin and passed through the through-passing channel of each stator pin in sequence. After passing through, the wired stator is placed on the conveyor line, which transports it to the terminal clamping process. The clamping worker removes the wired stator from the conveyor line and places it on the terminal clamping machine for relative clamping between the two clamping plates, clamping the winding connecting wire between them. The clamped stator is then returned to the conveyor line for transport. When the conveyor line transports the clamped stator to the laser solder peeling process, the peeling worker removes the clamped stator from the conveyor line and places it on the laser solder peeling machine for solder peeling. This removes the oxide layer or other impurities from the areas of the clamped stator to be soldered. The stator is then conveyed to the laser soldering process. At this point, the laser soldering worker takes the stator off the conveyor line and solders it in the laser soldering machine. After soldering, it is put back on the conveyor line for further conveying. When the stator is conveyed to the weld point visual inspection process, the inspection worker takes the stator off the conveyor line and puts it into the weld point visual inspection machine for weld point inspection to check whether the welding is qualified. Unqualified products are piled up, and qualified products are put back on the conveyor line. Finally, the stator is conveyed to the performance testing process. The inspection worker takes the stator that has completed the weld point visual inspection off the conveyor line and puts it into the motor welding performance testing machine outside the conveyor line for testing to check whether the motor performance meets the standards. Qualified products are put back on the conveyor line for further conveying, and unqualified products are placed aside by the inspection worker for unified recycling and disposal.

[0004] In this stator processing method, each process requires a worker. At the same time, because the conveyor line is constantly running, if even one worker is less efficient, the stator may be moved directly to the next process without completing the previous process, resulting in a high stator rework rate.

[0005] In view of this, the inventors of this case conducted in-depth research on the problem, which led to the creation of this case. Summary of the Invention

[0006] The purpose of this invention is to provide a disc-type laser welding machine to solve the problem that existing stators require a human operator in each process, resulting in low work efficiency and high stator rework rate.

[0007] To achieve its purpose, this utility model adopts the following technical solution:

[0008] The disc-type laser welding machine includes a terminal crimping machine, a laser peeling machine, a laser welding machine, a weld joint visual inspection machine, and a performance testing machine. It also includes a frame and a rotating disk rotatably mounted on the frame. The top surface of the rotating disk has several spaced, circumferentially arranged platforms for the stator to be clamped onto. The terminal crimping machine is located outside the rotating disk and is mounted on the frame in a manner that allows it to move horizontally toward the rotating disk and rise and fall to the platforms. The laser peeling machine is mounted on the frame in a manner that allows it to move horizontally toward the rotating disk and rise and fall, with the laser emission direction of the laser peeling machine aligned vertically with the platforms on the rotating disk. The laser welding machine is positioned outside the rotating disk and is mounted on the frame in a manner that allows it to move horizontally toward the rotating disk and be adjusted vertically to align its welding end with the worktable. The weld point visual inspection machine and the performance inspection machine are mounted on the frame in a manner that allows them to be adjusted vertically, and the visual acquisition end of the weld point visual inspection machine and the detection end of the performance inspection machine can be aligned vertically with any worktable on the rotating disk. The terminal crimping machine, laser peeling machine, laser welding machine, weld point visual inspection machine, and performance inspection machine are arranged sequentially along the circumference of the rotating disk.

[0009] Between the laser peeling machine and the laser welding machine, there is a peeling visual acquisition device located outside the rotating disk. The peeling visual acquisition device is installed on the frame by moving up and down, and the visual acquisition end of the peeling visual acquisition device can be vertically aligned with any of the platforms on the rotating disk.

[0010] The peeling visual acquisition device and the laser welding machine, the weld point visual inspection machine and the performance testing machine, and the performance testing machine and the terminal crimping machine are all equipped with defective product clamping devices. The defective product clamping device has a placement platform outside the rotating disk for placing defective products and a stator clamp that can clamp the stator on the platform and lift and rotate it to the placement platform.

[0011] The aforementioned rotating disk is provided with a platform corresponding to the terminal crimping machine, laser peeling machine, laser welding machine, weld point visual inspection machine, performance testing machine, peeling visual acquisition device and three defective product clamping device. Furthermore, the aforementioned rotating disk is located between the terminal crimping machine and the defective product clamping device between the performance testing machine and the terminal crimping machine, and another platform is provided between the aforementioned rotating disk and the defective product clamping device.

[0012] The platform has a rotating block and a fitting block. The rotating block has an inner clamping post and an inner connecting post. The inner connecting post is mounted on the rotating disk in a manner that allows it to rotate circumferentially. The inner clamping post is erected above the inner connecting post. The fitting block has an outer clamping post and an outer locking post below the outer clamping post. The outer clamping post has a hollow structure with an open bottom and is fitted around the inner clamping post. The outer locking post is stacked on top of the inner connecting post and locked together with it.

[0013] The terminal crimping machine has a pre-pressing block and a pre-pressing frame. The pre-pressing frame is vertically installed outside the rotating disk. A sliding block that can slide up and down is provided on the side of the pre-pressing frame facing the rotating disk. A clamping cylinder is vertically installed on the side of the sliding block facing the rotating disk, with the output end of the clamping cylinder facing downward. The pre-pressing block has an upper clamping plate and a lower clamping plate that are arranged opposite each other. A clamping space is formed between the upper clamping plate and the lower clamping plate, which can clamp the crimping piece. The bottom surface of the clamping cylinder is connected to the upper clamping plate, and the output end of the clamping cylinder extends downward beyond the bottom surface of the upper clamping plate and is connected to the lower clamping plate. The upper clamping plate and the lower clamping plate have an arc-shaped groove that can match the outer wall of the stator on the outer side of the rotating disk. The arc-shaped groove can be positioned relative to any platform on the rotating disk. The pre-pressing frame is slidably installed on the frame in a way that allows it to move horizontally toward the rotating disk to drop the crimping piece on the stator into the clamping space.

[0014] The laser peeling machine has a first laser head capable of emitting laser light. The first laser head is suspended above the corresponding platform. The first laser head can be vertically aligned with any platform on the rotating disk. The first laser head is mounted on the frame in a manner that allows it to move horizontally toward the rotating disk and move up and down. The frame is equipped with an air-blowing cooling pipe that faces the platform and can blow air to cool the stator on the platform. The air-blowing cooling pipe is located below the first laser head.

[0015] The frame is equipped with a baffle suspended above the platform, and the baffle can be vertically aligned with any platform on the rotating disk. The outer wall of the baffle is recessed with a welding port at the position directly above the pressure plate. The laser welding machine has a second laser head and two solder nozzles. The two solder nozzles form a horn-shaped space that gradually narrows from top to bottom. The horn-shaped space falls within the welding port area. The second laser head is vertically positioned within the area directly above the welding port, and the second laser head is mounted on the frame in a manner that allows it to move horizontally towards the rotating disk and to move up and down.

[0016] The weld joint visual inspection machine has a visual camera that is vertically suspended above the corresponding stage of the weld joint visual inspection machine. The visual camera is the visual acquisition end of the visual inspection machine. The visual camera is mounted on the frame in a way that can be adjusted up and down. A light and a light shield are provided on the frame below the visual camera. The light and the light shield are arranged opposite each other. The visual camera is located in the space above the light and the light shield. The hollow space enclosed by the visual camera, the light and the light shield can be vertically aligned with any stage on the rotating disk.

[0017] The performance testing machine has a movable block and several testing blocks mounted on the movable block. Each testing block is vertically mounted on the movable block, and both ends of the testing block extend beyond the bottom and top surfaces of the movable block. The upper end of each testing block is connected to a performance detector, and the lower end of each testing block can be vertically aligned with each stator pin on any platform on the rotating disk. Each testing block is the testing end of the performance testing machine. The movable block is mounted on the frame in a manner that allows it to move up and down and electrically connect each testing block to the upper end of the stator pin.

[0018] The placement platform is a strip-shaped structure suspended on the frame. The top surface of the placement platform is recessed with a horizontally arranged mounting groove. A strip-shaped placement plate is installed in the mounting groove. The first end face of the placement plate and the bottom of the mounting groove are both recessed with vertically penetrating sliding holes in a strip-shaped structure. The bottom surface of the first end of the placement platform is provided with a driving block that extends out of the top surface of the placement plate through the sliding hole. The driving block is installed on the frame in such a way that it can move up and down to extend into the stator and move horizontally along the extension direction of the sliding hole to place the stator on the placement plate.

[0019] A lifting cylinder is installed on the frame between the placement platform and the rotating disk. The output end of the lifting cylinder faces upward and is connected to a rotating cylinder. The output end of the rotating cylinder also faces upward and is connected to a rotating plate extending out of the rotating cylinder and positioned above the platform. The end of the rotating plate facing away from the rotating cylinder is connected to a finger cylinder that is vertically positioned above the platform. The output end of the finger cylinder has four pneumatic grippers spaced apart along the circumferential direction of the finger cylinder. The four pneumatic grippers can be vertically aligned with any platform on the rotating disk. The four pneumatic grippers are installed on the lower end of the finger cylinder in a manner that allows them to move relative to each other or in opposite directions. The four pneumatic grippers constitute the aforementioned stator gripper.

[0020] This novel disc-type laser welding machine, in operation, involves manually winding the connecting wire around the outside of the trip pin and sequentially passing it through the through-pass channels of each stator pin. After the wire is passed through, the stator is placed on a platform. The rotating disc transports the stator to a position corresponding to the terminal clamping machine, clamping the connecting wire between two clamping plates. The rotating disc continues to rotate, moving the clamped stator to a position corresponding to the laser stripping machine, where solder stripping is performed on the areas requiring soldering. The machine also removes oxide layers or other defects from the areas of the clamped stator to be soldered. Impurities; the rotating disc continues to rotate, bringing the stator after solder removal to the corresponding position of the vision acquisition device, where images of the solder removal area are acquired to detect whether the solder removal is qualified; the rotating disc continues to rotate, bringing the stator after solder removal and inspection to the position of the defective product clamping device located between the solder removal vision acquisition device and the laser welding machine. If the solder is unqualified, the defective product clamping device between the solder removal vision acquisition device and the laser welding machine removes the unqualified stator and places it on the corresponding placement table; if the solder removal is qualified, the rotating disc continues to rotate to remove the unqualified stator. The stator is rotated to the corresponding position on the laser welding machine for soldering at the locations requiring soldering, specifically soldering the stator pins and winding connections. After soldering, the rotating disk continues to rotate, moving the soldered stator to the corresponding position on the solder joint visual inspection machine. The machine inspects the solder joints for quality. If the soldering is substandard, the rotating disk moves the substandard stator to the defective product clamping device located between the solder joint visual inspection machine and the performance testing machine. This device removes the substandard stator and places it in a designated location. On the corresponding placement platform; if the stator is qualified after soldering, the rotating disk moves the qualified stator to the corresponding position of the performance testing machine, so that the performance testing machine is electrically connected to each stator pin and performs performance testing on the stator to check whether the motor performance meets the standard. After the test, if the stator fails the test, the rotating disk moves the substandard stator to the defective product clamping device located between the performance testing machine and the terminal clamping machine. The defective product clamping device removes the substandard stator and places it on the corresponding placement platform. If it meets the standard, the stator is manually removed from the platform and collected. Compared with the existing technology, the operation of each process of stator processing can automatically proceed to the next process and start operation. Only one worker is needed for loading and unloading, eliminating the need for workers to operate in each process, saving manpower, reducing production costs, and achieving a high degree of automation and high work efficiency. Moreover, for substandard stators, the defective product clamping device will remove the substandard stators, resulting in a low rework rate after final processing. Furthermore, the presence of several platforms allows each process to be carried out simultaneously, improving processing efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Figure 2 This is a schematic diagram of the terminal crimping machine of this utility model.

[0023] Figure 3 This is a schematic diagram of the terminal crimping machine of this utility model.

[0024] Figure 4 This is a schematic diagram of the structure of the laser welding machine of this utility model.

[0025] Figure 5 This is a schematic diagram of the structure of the weld point visual inspection machine of this utility model.

[0026] Figure 6 This is a schematic diagram of the performance testing machine of this utility model.

[0027] Figure 7 This is a schematic diagram of the defective product clamping device of this utility model. Detailed Implementation

[0028] To further explain the technical solution of this utility model, a detailed description is provided below in conjunction with the accompanying drawings.

[0029] Disc-type laser welding machine, such as Figures 1-7The system includes a frame 1 and a rotating disk 11 rotatably mounted on the frame 1. Specifically, the frame 1 houses a vertically mounted drive motor (not shown in the figure). The output end of the drive motor extends beyond the top surface of the frame 1 and connects to the center of the rotating disk 11. The rotating disk 11 has a circular block structure. On the top surface of the frame 1, outside the rotating disk, are mounted a terminal clamping machine 2, a laser peeling machine 3, a laser welding machine 4, a weld point visual inspection machine 5, a performance testing machine 6, a peeling visual acquisition device 7, and a defective product clamping device 8. The top surface of the rotating disk 11 is equipped with several spaced, circumferentially arranged platforms for the stator to be fitted onto. Specifically... The defective product clamping device 8 comprises three components: a terminal clamping machine 2, a laser peeling machine 3, a peeling visual acquisition device 7, one defective product clamping device 8, a laser welding machine 4, a solder joint visual inspection machine 5, another defective product clamping device, a performance testing machine 6, and yet another defective product clamping device, arranged in a counter-clockwise sequence along the circumference of the rotating disk 11. The rotating disk 11 is positioned such that each of the terminal clamping machine 2, laser peeling machine 3, laser welding machine 4, solder joint visual inspection machine 5, performance testing machine 6, peeling visual acquisition device 7, and three defective product clamping devices 8 has a corresponding platform. The rotating disk 11 is located at the terminal... A loading platform is also provided between the clamping machine 2 and the defective product clamping device 8 between the performance testing machine 6 and the terminal clamping machine 2. The rotating disk 11 located at the loading platform between the terminal clamping machine 2 and the defective product clamping device 8 between the performance testing machine 6 and the terminal clamping machine 2 is a manual loading and unloading position. That is, there are ten loading platforms, which means there are ten workstations. Each rotation of the rotating disk 11 corresponds to one workstation. The loading platform has a rotating block 91 and a fitting block 92. The rotating block 91 has an inner clamping column and an inner connecting column. The inner connecting column is installed on the rotating disk 11 in a manner that allows it to rotate circumferentially. The inner clamping post stands vertically above the inner connecting post. A rotating motor (not shown in the figure) is located inside the rotating disk 11 at the position corresponding to the inner connecting post. The output end of the rotating motor extends out of the top surface of the rotating disk 11 and connects to the inner connecting post. The mounting block 92 has an outer clamping post 921 and an outer locking post 922 located below the outer clamping post 921. The outer clamping post 921 has a hollow structure with an open bottom and is fitted tightly around the inner clamping post. The outer locking post 922 is stacked above the inner connecting post and locked together with it. The stator is fixed on the outer locking post, and the inner sidewall of the stator and the outer sidewall of the outer clamping post 921 are engaged together. In application, the mounting block 92 is locked onto the rotating block 91. The operator manually winds the winding connecting wire around the outside of the tripwire post and passes it sequentially through the through-passing channels of each stator pin. After passing through, the stator with the wire threaded is fixed on the loading / unloading platform. The rotating motor is then driven to rotate, causing the stator to rotate so that the stator pins correspond to the positions at each workstation. Furthermore, the mounting block 92 can be disassembled and installed with the rotating block 91. When processing stators of different sizes, the mounting block 92 can be replaced to adapt to the processing applications of stators of different sizes, thus broadening its applicability.Furthermore, setting up several platforms allows for continuous operation of each process without interruption, thereby improving production efficiency.

[0030] The terminal clamping machine 2 is located outside the rotating disk 11, and is mounted on the frame 1 in a manner that allows it to move horizontally toward the rotating disk 11 and rise and fall to the platform. Specifically, the terminal clamping machine 2 has a pre-pressing block 21 and a pre-pressing frame 22. The pre-pressing frame 22 is a vertically arranged column structure located outside the rotating disk 11. The pre-pressing block 21 is mounted on the pre-pressing frame 22 in a manner that allows it to rise and fall vertically and move horizontally to the platform position. That is, the side of the pre-pressing frame 22 facing the rotating disk 11 has a sliding block 221 that can slide up and down, and the side of the pre-pressing frame 22 facing the sliding block 221 has a side threaded rod. The top surface of the pre-pressing frame has a mounting plate (not shown in the figure), which extends out of the pre-pressing block. On the side of the frame facing the rotating disk 11, an upper rotating motor is provided on the top surface of the mounting plate. The output end of the upper rotating motor extends downward beyond the bottom surface of the mounting plate and is rotatably connected to the side threaded rod. The sliding block 221 has a side threaded block protruding on the side of the pre-compression frame facing the side threaded frame and threaded onto the side threaded rod. The pre-compression frame 22 has two slide rails on the side of the sliding block 221 facing the sliding block 221, with the side threaded rod located between the two slide rails. The sliding block 221 has a slider slidably mounted on the slide rails on the side of the sliding block 221 facing the pre-compression frame 22. A clamping cylinder 2211 is vertically installed on the side of the sliding block 221 facing the rotating disk 11, with the output end of the clamping cylinder 2211 facing downward. The pre-compression block 21 has an upper clamping cylinder arranged vertically opposite to the lower clamping cylinder 11. The upper clamping plate 211 and the lower clamping plate 212 form a clamping space 100 that can clamp the pressure plate within. The bottom surface of the clamping cylinder 2211 is locked together with the upper clamping plate 211, and the output end of the clamping cylinder 2211 extends downward beyond the bottom surface of the upper clamping plate 211 and connects with the lower clamping plate 212. The upper clamping plate 211 and the lower clamping plate 212 are recessed into the outer wall of the rotating disk 11 with an arc-shaped groove 200 that can match the outer wall of the stator. The arc-shaped groove can be positioned relative to any platform on the rotating disk 11. The pre-pressing frame 22 is slidably installed so as to be able to move horizontally toward the rotating disk 11 to drop the pressure plate on the stator into the clamping space 100. On the frame 1, a crossbeam is provided on the top surface of the frame 1 corresponding to the bottom surface of the pre-compression frame 22, and is perpendicular to the pre-compression frame 22. The crossbeam is horizontally locked on the frame. A lower screw rod is horizontally provided on the top surface of the crossbeam. A lower rotating motor (not shown in the figure) is provided on the side of the frame 1 facing away from the rotating disk 11. The output end of the rotating motor faces the crossbeam and is rotatably connected to the lower screw rod. The bottom surface of the pre-compression frame 22 is provided with a lower screw block sleeved on the lower screw rod. The bottom surface of the pre-compression frame 22 and the top surface of the crossbeam are slidably engaged together by a slider and a slide rail. The sliding engagement between the bottom surface of the pre-compression frame 22 and the top surface of the crossbeam is similar to the sliding engagement between the side surface of the pre-compression frame 22 and the sliding block 221.In application, the rotating disk 11 rotates, transferring the wired stator to a position opposite to the terminal clamping machine 2. The upper and lower rotating motors are started, and the pre-pressing block 21 moves downward and toward the wired stator until the outer wall of the stator falls into the bottom of the arc-shaped groove, the two clamping plates fall into the clamping space 100, and the bottom surface of the upper clamping plate 211 presses against the two clamping plates. The pre-pressing block 21 stops moving, the clamping cylinder 2211 is started, the lower clamping plate 212 moves upward, and the two clamping plates press against each other, so that the winding connection wire is clamped between the two clamping plates.

[0031] The laser peeling machine 3 is mounted on the frame 1 in a manner that allows it to move horizontally and vertically towards the rotating disk 11. The laser emission direction of the laser peeling machine 3 is aligned vertically with the platform on the rotating disk 11. Specifically, the laser peeling machine 3 has a mounting box and a first laser head 31 capable of emitting laser light. The first laser head 31 is mounted at the lower part of the mounting box, and it can be vertically aligned with any platform on the rotating disk 11. The mounting box is mounted on the frame 1 in a manner that allows it to move horizontally and vertically towards the rotating disk 11. The method of horizontal movement and vertical movement of the mounting box is similar to that of the pre-compression block 21, and will not be elaborated further. The frame 1 is equipped with an air-blowing cooling pipe 12 that faces the platform and can blow air to cool the stator on the platform. The cooling pipe 12 is located below the first laser head 31. The frame 1 is vertically mounted with a vertical rod (not shown in the drawing) outside the rotating disk 11. One end of the air-blowing cooling pipe 12 passes through the vertical rod and faces the platform. The air-blowing cooling pipe 12 is a directional hose, and the other end of the air-blowing cooling pipe 12 facing away from the transfer disk is connected to a blower (not shown in the drawing). The method of the blower blowing air towards the stator through the air-blowing cooling pipe 12 to cool the stator is a known technology. The method and working principle of the first laser head 31 emitting laser to remove the oxide layer or other impurities at the solder position is also a known technology, such as the charger inductor pin insulation removal machine in application number 2019214795337. The working method of the first laser head 31 is similar to that of the laser head in the removal machine, and will not be described in detail here. In application, the rotating disk 11 rotates, transferring the compressed stator to below the first laser head 31. The laser descaling machine starts to descal the stator, removing the oxide layer or other impurities from the area on the compressed stator to be soldered. Then, the stator is rotated to the next position to be soldered and aligned with the first laser head to remove the oxide layer or other impurities from the next soldering position on the stator.

[0032] The laser welding machine 4 is located outside the rotating disk 11, and is mounted on the frame 1 in a manner that allows it to be translated towards the rotating disk 11 and adjusted vertically to align its welding end with the worktable. Specifically, the frame 1 has a baffle 13 suspended above the worktable, which can be vertically aligned with any worktable on the rotating disk 11. A vertically erected support rod 131 is connected above the baffle 13, and a connecting beam 1311 extending beyond the rotating disk 11 is connected to the upper end of the support rod 131. The laser welding machine 4 is mounted on the connecting beam 1311, which is also translatable towards the rotating disk 11 and can be adjusted vertically. The translation and vertical adjustment of the connecting beam 1311 are similar to those of the pre-pressing block, and will not be elaborated further. A welding port is recessed on the outer wall of the baffle 13 at a position directly above the stator pressure plate on the worktable. 300, the laser welding machine 4 has a second laser head 41 and a solder nozzle 42. There are two solder nozzles 42. The two solder nozzles and the second laser head 41 are the welding ends of the laser welding machine 4. The two solder nozzles 42 form a horn-shaped space that gradually narrows from top to bottom. The horn-shaped space falls within the welding port area. The second laser head 41 is mounted on the connecting beam 133. The second laser head 41 is vertically positioned within the area directly above the welding port 300. The second laser head 41 is mounted on the frame 1 in a way that it can move horizontally towards the rotating disk 11 and can move up and down. That is, the horizontal movement and vertical movement of the connecting beam 1411 drive the horizontal movement and vertical movement of the second laser head 41. The solder dispensing method of the solder nozzle 42 and the method of the second laser head 41 emitting laser to melt the solder and make it fall to the welding position on the stator are known technologies, such as the laser welding equipment with application number 2020111270599. The working principle of the solder nozzle and the solder nozzle 42 of the laser welding equipment is similar. In application, the rotating disk 11 rotates, transferring the stator after the solder has been removed to the area below the second laser head 41. The position of the stator that needs soldering falls within the range directly below the soldering port 300. Solder is dispensed from the solder nozzle 42, and the second laser head 41 emits a laser on the solder. The solder melts and falls to the position of the stator that needs soldering. Then, the stator is rotated so that the next soldering position of the stator falls directly below the soldering port 300. Soldering is performed on each position that needs soldering in sequence, so that the stator pins are connected to the winding connecting wires.

[0033] The weld joint visual inspection machine 5 is mounted on the frame 1 in a way that allows for vertical adjustment. The visual acquisition end of the weld joint visual inspection machine 5 can be vertically aligned with any platform on the rotating disk 11. Specifically, the weld joint visual inspection machine 5 has an upright column 51 and a visual camera 52 that is vertically suspended above the platform corresponding to the weld joint visual inspection machine 5. The column 51 is located outside the rotating disk 11. The visual camera is the visual acquisition end of the visual inspection machine 5 and is mounted on the frame 1 in a way that allows for vertical adjustment. That is, a vertical plate (not shown in the figure) is provided on one side of the column. The vertical plate is mounted on one side of the column in a way that allows for vertical adjustment, and the vertical adjustment method of the column is similar to the vertical sliding method of the sliding block 221, which will not be described in detail here. A connecting plate 511 extending to the platform is connected to the side of the vertical plate facing away from the column. The visual camera 52 is connected to the connecting plate 511. On the end of the frame 1 facing away from the column 51, a light lamp 14 and a light shield 15 are provided below the vision camera. The light lamp 14 and the light shield 15 are arranged opposite each other. The vision camera 52 is located in the upper space between the light lamp 14 and the light shield 15. The hollow space formed by the vision camera, the light lamp and the light shield can be vertically aligned with any platform on the rotating disk. That is, the light lamp 14 is horizontally arranged on the upright plate and below the connecting plate 511. A connecting plate 512 is horizontally arranged on the upright plate above the connecting plate 511, extending to the top of the platform and downward to be arranged opposite to the light lamp 14. The light shield 15 is connected to the connecting plate 512 at the position opposite to the light lamp. The vision camera 52 takes pictures of the workpiece and detects the captured information in a known way, such as a weld point visual inspection device with application number 2020111713741. When in use, the light 14 is turned on and the light shield 15 can prevent the light source from spreading, so that the light source can be concentrated on the stator, making the image acquisition of the vision camera 52 clearer; in addition, the solder joint can be detected by the vision camera to detect the fullness of the solder joint, the solder area, the height of the solder joint and whether there is a cold solder joint.

[0034] The performance testing machines 6 are mounted on the frame 1 in a way that allows for vertical adjustment, and the testing end of each performance testing machine 6 can be vertically aligned with any stage on the rotating disk 11. Specifically, each performance testing machine 6 has a movable block 61 and several testing blocks 62 mounted on the movable block 61. The testing blocks 62 are metal conductive blocks, each testing block 62 is vertically mounted on the movable block 61, and both ends of the testing blocks 62 extend beyond the bottom and top surfaces of the movable block 61. The upper end of each testing block 62 is connected to a performance detector (not shown in the figure), and the lower end of each testing block 62 can be vertically aligned with each stator pin on any stage on the rotating disk 11. The hollow space enclosed by 62 is a convex arc structure that matches the hollow space enclosed by each stator pin. The moving block 61 is mounted on the frame in a manner that allows it to move up and down and electrically connect each detection block to the upper end of the stator pin. Each detection block 62 is the detection end of the performance testing machine 6. The up-and-down movement of the moving block 61 is similar to the up-and-down sliding movement of the sliding block, and will not be described in detail here. The method of electrically connecting each stator pin to the performance detector and performing performance testing is a technique known to those skilled in the art, such as the motor stator performance testing device in application number 2021233511408. The testing mechanism of that testing device is similar to the working principle of the detection block 62, and will not be described in detail here. In application, the moving block 61 moves down, causing each detection block to contact and electrically connect with each stator pin, activating the performance detector to perform performance testing on the stator.

[0035] Between the laser peeling machine 3 and the laser welding machine 4, there is a peeling visual acquisition device 7 located outside the rotating disk 11. The peeling visual acquisition device 7 is mounted on the frame 1 by moving up and down, and the visual acquisition end of the peeling visual acquisition device 7 can be vertically aligned with any platform on the rotating disk 11. Specifically, the peeling visual acquisition device 7 has a vertically mounted peeling visual camera. The working method and working principle of the peeling visual camera are similar to those of a visual camera, and are well-known technologies, so they will not be described in detail here. The peeling visual camera is for peeling visual acquisition. The visual acquisition end of device 7 features a peeling visual camera mounted on frame 1, which can move vertically. The camera can be vertically aligned with any stage on the rotating disk 11. The vertical movement of the camera is similar to that of a sliding block, and will not be elaborated further. A lower supplementary light 16 is mounted on frame 1, directly below the camera. The lower supplementary light 16 has an open-bottom housing and a bulb on the bottom surface. A light-passing hole runs vertically through the top of the housing and is vertically aligned with the camera. In application, the lower supplementary light 16 is turned on, activating the camera. The lower supplementary light 16 makes image acquisition clearer. Furthermore, the peeling detection can determine the peeling length, peeling area, and whether the stator pins are tilted.

[0036] Defective product clamping devices 8 are provided between the peeling visual acquisition device 7 and the laser welding machine 4, between the weld point visual inspection machine 5 and the performance testing machine 6, and between the performance testing machine 6 and the terminal clamping machine 2. Each defective product clamping device 8 has a placement platform 81 located outside the rotating disk 11 for placing defective products, and a stator clamp 82 capable of clamping the stator on the platform and lifting and rotating it onto the placement platform 81. Specifically, the placement platform 81 has a strip-shaped structure and lies horizontally suspended on the frame 1. Here, it is taken as an example that the placement platform lies horizontally along the front-to-back direction; the specific horizontal direction of the placement platform 81 is adjusted according to the actual application. The top surface of the placement platform 81 is recessed with a horizontally arranged mounting groove along the front-to-back direction. A strip-shaped placement plate 811 extending front-to-back is installed in the mounting groove. The front end face of the placement plate and the bottom of the mounting groove are both recessed with vertically penetrating sliding holes in a strip-shaped structure. The bottom surface of the first end of the placement platform 81 is provided with a driving block 812 that extends out of the top surface of the placement plate through the sliding hole. The driving block is installed on the frame 1 in such a way that it can move up and down to extend into the stator and move horizontally along the extension direction of the sliding hole to place the stator on the placement plate 811. That is, the left and right ends of the driving block 812 are provided with guides located below the placement platform. Block 8121, a driving cylinder is connected to the rear end of the bottom surface of the placement platform 81. The driving cylinder extends in the front-rear direction, and its output end is positioned forward and exposed within the sliding hole range. The output end of the driving cylinder is connected to the lower end of the driving block 812. A moving cylinder connected to the top surface of the frame is connected to the bottom surface of the driving cylinder. The output end of the moving cylinder is positioned upward and connected to the bottom surface of the driving cylinder. A lifting cylinder 17 is installed on the frame 1 between the front end of the placement platform 81 and the rotating disk 11. The output end of the lifting cylinder 17 is positioned upward, and its output end is connected to a rotating cylinder 171. The output end of the rotary cylinder is set upward, and the output end of the rotary cylinder is connected to a rotating plate 1711 that extends out of the rotary cylinder and is located above the platform. The end of the rotating plate 1711 facing away from the rotary cylinder 171 is connected to a finger cylinder that is erected above the platform. The output end of the finger cylinder is provided with four pneumatic grippers that are evenly spaced along the circumferential direction of the finger cylinder. The four pneumatic grippers are installed on the lower end of the finger cylinder in a manner that allows them to move relative to each other or in opposite directions. The specific working method of the four pneumatic grippers lifting the stator is known to those skilled in the art and will not be described in detail here. The four pneumatic grippers constitute the stator gripper 82 mentioned above.In application, when a stator machining defect is detected, the rotating disk 11 rotates the defective stator to below the corresponding four pneumatic grippers. The four pneumatic grippers move in opposite directions and rotate to directly above the defective stator. The lifting cylinder is activated, causing the four pneumatic grippers to descend to the defective stator and move towards each other to clamp it. The lifting cylinder is activated again, causing the four pneumatic grippers to rise and remove the defective stator from the platform. The rotating cylinder is activated, rotating the defective stator via the rotating plate 1711 to the front end above the placement plate 811. The four pneumatic grippers then release... If the defective stator is placed on the front end of the placement plate 811, the drive block 812 located at the front end of the placement plate 811 extends into the defective stator. The drive cylinder is activated, and the defective stator moves from the front end of the sliding hole to the rear end of the sliding hole and is stacked on the placement plate 811. The moving cylinder is activated, and the drive block 812 moves down and moves out of the defective stator. The drive cylinder is activated again, and the drive block 812 moves back to the first end of the placement plate 811, waiting for the next defective stator to fall onto the drive block 812.

[0037] In this novel disc-type laser welding machine, the winding connecting wire is manually wound around the outside of the tripwire post and sequentially passed through the through-passing channels of each stator pin. After the wire is passed through, the stator is placed on the loading platform at the manual loading and unloading position. The rotating disc 11 rotates one station to transport the stator to a position opposite to the terminal clamping machine 1. The pre-pressing block 21 moves downward and towards the stator after the wire is passed through. The two clamping plates on the stator fall between the upper clamping plate 211 and the lower clamping plate 212. The clamping cylinder is activated, and the two clamping plates on the stator are clamped between the upper clamping plate 211 and the lower clamping plate 212. The winding connection wires are clamped between the two pressure plates. The rotating disk 11 continues to rotate one station, causing the clamped stator to rotate to a position opposite to the laser stripping machine, so that the area requiring soldering falls below the first laser head 31. The first laser head starts to strip the solder from the area requiring soldering, removing the oxide layer or other impurities from the area of ​​the clamped stator to be soldered. The rotating disk 11 continues to rotate to the next station, causing the stator after solder stripping to be positioned opposite the vision acquisition device 7. The stripping vision camera acquires images of the stripped area to detect whether the solder stripping is qualified. The rotary table 11 continues to rotate to the next station, bringing the stator that has been desoldered and inspected to the position of the defective product clamping device between the desoldering vision acquisition device 7 and the laser welding machine 4. If the solder is unqualified, the defective product clamping device between the desoldering vision acquisition device 7 and the laser welding machine 4 will remove the unqualified stator and place it on the corresponding placement table 81. If the solder desoldering is qualified, the rotary table 11 continues to rotate to the next station, bringing the stator that has been desoldered to the position below the baffle 13. The position of the stator that needs soldering falls into the welding port 300 range, the solder nozzle 42 dispenses solder, and the second laser head 41... The laser is emitted onto the tin, which melts and falls to the stator where soldering is required, thus soldering the stator pins and winding connections first. After soldering, the rotating disk 11 continues to rotate to the next station, moving the soldered stator to the position opposite to the solder joint visual inspection machine 5. The soldering position of the stator after soldering is inspected to see if it is qualified. After inspection, if the soldering is unqualified, the rotating disk rotates to move the soldered stator to the position of the defective product clamping device located between the solder joint visual inspection machine 5 and the performance inspection machine 6. The defective product clamping device removes the unqualified stator and places it on the corresponding placement table 81.If the stator is qualified after soldering, the rotating disk 11 moves the qualified stator to the bottom of each test block. Each test block moves down and is electrically connected to the stator pins. The performance detector is activated to perform performance testing on the stator to check whether the motor performance meets the standard. After the test, if the stator fails the test, the rotating disk 11 moves the substandard stator to the defective product clamping device located between the performance testing machine 6 and the terminal clamping machine 2. The defective product clamping device takes away the substandard stator and places it on the corresponding placement table 81. If it meets the standard, the rotating disk continues to rotate one station. The processed and qualified stator returns to the loading table on the manual loading and unloading position. The operator takes the stator off the loading table on the manual loading and unloading position and collects it. Compared with existing technologies, the operation of each step in stator processing can automatically proceed to the next step and begin operation. Only one worker is needed for loading and unloading, eliminating the need for a worker to operate each step. This results in a high degree of automation, higher work efficiency, labor savings, and reduced production costs. Furthermore, for defective stators, the defective product clamping device will remove them, leading to a low rework rate after final processing.

[0038] The product form of this utility model is not limited to the illustrations and embodiments in this case. Any appropriate changes or modifications made to it based on similar ideas should be considered as not departing from the patent scope of this utility model.

Claims

1. A disc-type laser welding machine, comprising a terminal crimping machine, a laser peeling machine, a laser welding machine, a weld joint visual inspection machine, and a performance testing machine, characterized in that: It also includes a frame and a rotating disk rotatably mounted on the frame. The top surface of the rotating disk has several spaced, circumferentially arranged platforms for the stator to be fitted onto. A terminal clamping machine is located outside the rotating disk and is mounted on the frame in a manner that allows it to move horizontally towards the rotating disk and rise and fall to the platforms. A laser peeling machine is mounted on the frame in a manner that allows it to move horizontally towards the rotating disk and rise and fall, with the laser emission direction of the laser peeling machine aligned vertically with the platforms on the rotating disk. The laser welding machine is located outside the rotating disk, and the laser welding... The laser welding machine is mounted on the frame in a manner that allows it to move horizontally toward the rotating disk and to be adjusted vertically so that the welding end of the laser welding machine is aligned with the worktable. The weld point visual inspection machine and the performance inspection machine are also mounted on the frame in a manner that allows them to be adjusted vertically. The visual acquisition end of the weld point visual inspection machine and the detection end of the performance inspection machine can be aligned vertically with any worktable on the rotating disk. The terminal clamping machine, laser peeling machine, laser welding machine, weld point visual inspection machine and performance inspection machine are arranged sequentially along the circumference of the rotating disk. Between the laser peeling machine and the laser welding machine, there is a peeling visual acquisition device located outside the rotating disk. The peeling visual acquisition device is installed on the frame by moving up and down, and the visual acquisition end of the peeling visual acquisition device can be vertically aligned with any of the platforms on the rotating disk. The peeling visual acquisition device and the laser welding machine, the weld point visual inspection machine and the performance testing machine, and the performance testing machine and the terminal crimping machine are all equipped with defective product clamping devices. The defective product clamping device has a placement platform outside the rotating disk for placing defective products and a stator clamp that can clamp the stator on the platform and lift and rotate it to the placement platform.

2. The disc-type laser welding machine according to claim 1, characterized in that... The aforementioned rotating disk is provided with a platform corresponding to the terminal crimping machine, laser peeling machine, laser welding machine, weld point visual inspection machine, performance testing machine, peeling visual acquisition device, and three defective product clamping device. Furthermore, the aforementioned rotating disk is located between the terminal crimping machine and the defective product clamping device between the performance testing machine and the terminal crimping machine, and another platform is provided between the aforementioned rotating disk and the defective product clamping device.

3. A disc-type laser welding machine according to claim 2, characterized in that... The stage has a rotating block and a fitting block. The rotating block has an inner clamping post and an inner connecting post. The inner connecting post is mounted on the rotating disk in a manner that allows it to rotate circumferentially. The inner clamping post is erected above the inner connecting post. The fitting block has an outer clamping post and an outer locking post below the outer clamping post. The outer clamping post has a hollow structure with an open bottom and is fitted around the inner clamping post. The outer locking post is stacked on top of the inner connecting post and locked together with it.

4. A disc-type laser welding machine according to claim 2, characterized in that... The terminal crimping machine has a pre-pressing block and a pre-pressing frame. The pre-pressing frame is vertically installed outside the rotating disk. A sliding block that can slide up and down is provided on the side of the pre-pressing frame facing the rotating disk. A clamping cylinder is vertically installed on the side of the sliding block facing the rotating disk, with the output end of the clamping cylinder facing downward. The pre-pressing block has an upper clamping plate and a lower clamping plate that are arranged opposite each other. A clamping space is formed between the upper clamping plate and the lower clamping plate, which can clamp the crimping piece. The bottom surface of the clamping cylinder is connected to the upper clamping plate, and the output end of the clamping cylinder extends downward beyond the bottom surface of the upper clamping plate and is connected to the lower clamping plate. The upper clamping plate and the lower clamping plate are recessed on the outer side wall of the rotating disk, which can match the outer side wall of the stator. The arc-shaped groove can be positioned relative to any platform on the rotating disk. The pre-pressing frame is slidably installed on the frame in a way that allows it to move horizontally toward the rotating disk to drop the crimping piece on the stator into the clamping space.

5. A disc-type laser welding machine according to claim 2, characterized in that... The laser peeling machine has a first laser head capable of emitting laser light. The first laser head is suspended above the corresponding platform. The first laser head can be vertically aligned with any platform on the rotating disk. The first laser head is mounted on the frame in a manner that allows it to move horizontally toward the rotating disk and to move up and down. The frame is equipped with an air-blowing cooling pipe that faces the platform and can blow air to cool the stator on the platform. The air-blowing cooling pipe is located below the first laser head.

6. A disc-type laser welding machine according to claim 2, characterized in that... The frame is equipped with a baffle suspended above the platform, and the baffle can be vertically aligned with any platform on the rotating disk. The outer wall of the baffle is recessed with a welding port at the position directly above the pressure plate. The laser welding machine has a second laser head and two solder nozzles. The two solder nozzles form a horn-shaped space that gradually narrows from top to bottom. The horn-shaped space falls within the welding port area. The second laser head is vertically positioned within the area directly above the welding port, and the second laser head is mounted on the frame in a manner that allows it to move horizontally towards the rotating disk and to move up and down.

7. A disc-type laser welding machine according to claim 2, characterized in that... The weld joint visual inspection machine has a visual camera that is vertically suspended above the corresponding stage of the weld joint visual inspection machine. The visual camera is the visual acquisition end of the visual inspection machine. The visual camera is mounted on the frame in a way that can be adjusted up and down. A light and a light shield are provided on the frame below the visual camera. The light and the light shield are arranged opposite each other. The visual camera is located in the space above the light and the light shield. The hollow space formed by the visual camera, the light and the light shield can be vertically aligned with any stage on the rotating disk.

8. A disc-type laser welding machine according to claim 1, characterized in that... The performance testing machine has a movable block and several testing blocks mounted on the movable block. Each testing block is vertically mounted on the movable block, and both ends of the testing block extend beyond the bottom and top surfaces of the movable block. The upper end of each testing block is connected to a performance detector, and the lower end of each testing block can be vertically aligned with each stator pin on any platform on the rotating disk. Each testing block is the testing end of the performance testing machine. The movable block is mounted on the frame in a manner that allows it to move up and down and electrically connect each testing block to the upper end of the stator pin.

9. A disc-type laser welding machine according to claim 1, characterized in that... The placement platform is a strip-shaped structure suspended on the frame. The top surface of the placement platform is recessed with a horizontally arranged mounting groove. A strip-shaped placement plate is installed in the mounting groove. The first end face of the placement plate and the bottom of the mounting groove are both recessed with vertically penetrating sliding holes in a strip-shaped structure. The bottom surface of the first end of the placement platform is provided with a driving block that extends out of the top surface of the placement plate through the sliding hole. The driving block is installed on the frame in such a way that it can move up and down to extend into the stator and move horizontally along the extension direction of the sliding hole to place the stator on the placement plate.

10. A disc-type laser welding machine according to claim 1, characterized in that... A lifting cylinder is installed on the frame between the placement platform and the rotating disk. The output end of the lifting cylinder faces upward and is connected to a rotating cylinder. The output end of the rotating cylinder also faces upward and is connected to a rotating plate extending out of the rotating cylinder and positioned above the platform. The end of the rotating plate facing away from the rotating cylinder is connected to a finger cylinder that is vertically positioned above the platform. The output end of the finger cylinder has four pneumatic grippers spaced apart along the circumferential direction of the finger cylinder. The four pneumatic grippers can be vertically aligned with any platform on the rotating disk. The four pneumatic grippers are installed on the lower end of the finger cylinder in a manner that allows them to move relative to each other or in opposite directions. The four pneumatic grippers constitute the aforementioned stator gripper.

Images