Core round welding apparatus

Abstract

The application discloses a kind of iron core round welding equipment, it is related to motor manufacturing technical field, including equipment platform, welding part rotary displacement mechanism, iron core round folding clamp, inner core tooling and split stator welding mechanism, welding part rotary displacement mechanism contains bearing round seat, bearing round seat is installed in the round through slot of equipment platform, the inside of bearing round seat is rotatably connected with rotary drum, and the bottom end of rotary drum is connected with rotary displacement power assembly;Iron core round folding clamp is installed on rotary drum, and the bottom of iron core round folding clamp is connected with clamp folding lifting mechanism;The iron core round welding equipment of the application can realize the round operation of motor stator core block with one power component, which is convenient for debugging and adjusting, and is beneficial to improve the concentricity of motor stator core product.The laser welding gun can realize the two actions of moving close to motor stator core and along motor stator core weld seam with one power component, which is beneficial to improve the efficiency of laser welding.

Description

Technical Field

[0001] This invention relates to the field of motor manufacturing technology, specifically to a core round welding device. Background Technology

[0002] The stator core is a crucial component in motor manufacturing, and the split stator core is a common type of stator core in existing technology. This type of split motor stator core is generally divided into twelve pieces. Each stator core piece is wound with windings, then joined together by multiple power components, and finally welded together using a laser welding gun to form a complete motor stator core.

[0003] The stator core assembly welding machine is a specialized device for welding and assembling stator core blocks into round shapes. Existing stator core assembly welding machines require multiple power components for assembling split stator core blocks, making debugging cumbersome. Furthermore, the welding torch also requires multiple power components for movement, resulting in low welding efficiency. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide a core assembly welding device. The device uses a single power component to realize the assembly operation of motor stator core blocks, which is convenient for debugging and adjustment and helps to improve the concentricity of motor stator core products. Furthermore, the laser welding gun uses a single power component to realize two actions: approaching the motor stator core and moving along the weld seam of the motor stator core, which helps to improve the laser welding efficiency and can effectively solve the problems in the background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a core rounding welding device, comprising a device platform, wherein a circular through groove is formed in the middle of the device platform, and further comprising:

[0006] The welding section rotation and displacement mechanism includes a bearing seat. The bearing seat is installed in the circular groove of the equipment platform. A rotating cylinder is rotatably connected to the inner side of the bearing seat. The bottom end of the rotating cylinder is connected to a rotation and displacement power component.

[0007] A core-gathering clamp is mounted on a rotating drum, and the bottom of the core-gathering clamp is connected to a clamp-gathering lifting mechanism.

[0008] The inner core fixture is installed in the middle of the iron core rounding and gathering fixture;

[0009] The separate stator welding mechanism has four parts, which are distributed at equal angles around the bearing seat, and the bottom of each of the four separate stator welding mechanisms is connected to the welding gun displacement power mechanism.

[0010] A robotic arm places twelve motor stator core blocks onto the inner core fixture. A lifting mechanism then drives the core-closing fixture to clamp the twelve motor stator core blocks together. The welding torch shifting power mechanism moves four separate stator welding mechanisms closer to the four motor stator core welds to be welded, then welds the welds from bottom to top. Once the four welds are complete, the rotation shifting power assembly rotates the drum thirty degrees relative to the bearing seat, aligning the four separate stator welding mechanisms with another set of four motor stator core welds. Repeat the above welding process. After completing the welding of four seams, the rotary displacement power component continues to work, driving the rotating drum to rotate 30 degrees relative to the bearing seat. Repeat the above welding process to complete the welding of the last four seams. This completes the welding of twelve seams after the twelve motor stator core blocks are assembled into a circle, ultimately forming a complete motor stator core. Then, the clamp is retracted, and the lifting mechanism drives the core to retract. The clamp is then released, and the robot arm removes the motor stator core.

[0011] Furthermore, the core retracting clamp includes a disc, a fixing ring, a T-shaped slot, a T-shaped block, an inclined guide bar, a retracting clamping inclined plate, a deformation groove, a retracting assembly, and a movable guide assembly. The top of the rotating cylinder is connected to the disc, and a fixing ring is installed in the upper center of the disc. The top outer periphery of the fixing ring has twelve T-shaped slots arranged in a ring array. Each T-shaped slot has a T-shaped block installed in it. The top of each T-shaped block is fixedly connected to a retracting clamping inclined plate. An inclined guide bar is fixedly connected to the side of each retracting clamping inclined plate away from the center of the disc. A deformation groove is opened on the bottom of the retracting clamping inclined plate near the center of the disc. A movable guide assembly is installed on the disc, and the top of the movable guide assembly is connected to the retracting assembly.

[0012] The clamping and retracting lifting mechanism drives the movable guide assembly to move up and down, thereby driving the retracting assembly to move up and down. The T-shaped slot and T-shaped block cooperate to achieve a detachable connection between the fixing ring and the T-shaped block. Before placing the motor stator core assembly on the inner core fixture, the clamping and retracting lifting mechanism drives the retracting assembly to descend through the movable guide assembly. The twelve retracting clamping ramps are in an outward radiating open state, and the retracting clamping ramps will not interfere with the placement of the motor stator core assembly onto the inner core fixture. After the twelve motor stator core blocks are placed in a circular array on the inner core fixture, the clamping lifting mechanism moves the clamping assembly upward through the movable guide component. The clamping assembly uses twelve inclined deformation guide bars to bring the twelve clamping inclined plates closer together. The twelve clamping inclined plates are more easily deformed and brought closer together by the deformation groove. When the twelve clamping inclined plates move towards the center of the inner core fixture, they clamp the twelve motor stator core blocks. The inner side of each clamping inclined plate is aligned with the outer center of a motor stator core block. Since the twelve clamping inclined plates move towards the center of the inner core fixture at the same time, the twelve motor stator core blocks can be accurately rounded.

[0013] Furthermore, the movable guiding component includes pillars, a top seat, and a lifting seat. Four sliding holes are arranged in a circular array along the top edge of the disc. Four pillars are vertically slidably connected to each of the four sliding holes. The top ends of the four pillars are fixedly connected to the four corners of the top seat, and the bottom ends of the four pillars are fixedly connected to the four corners of the lifting seat. The lifting seat is connected to a lifting mechanism for retracting the clamp. All four pillars can move up and down relative to the disc, which can drive the top seat to move stably up and down relative to the disc. The lifting seat fixes the bottom ends of the four pillars together, allowing them to move up and down synchronously.

[0014] Furthermore, the gathering assembly includes a gathering ring and gathering guide grooves. The gathering ring is fixedly connected to the center of the top seat. The inner side of the gathering ring has twelve gathering guide grooves arranged in a circular array, and each inclined guide bar passes through the corresponding gathering guide groove. When the top seat moves upward, it drives the gathering ring upward. Due to the guidance of the inclined guide bar on the gathering ring, the inclined guide bar can help the gathering clamping inclined plate move closer to the center of the inner core fixture. When the top seat moves downward, it drives the gathering ring downward. The pressure of the gathering ring on the inclined guide bar gradually decreases, and each gathering clamping inclined plate gradually spreads outward, gradually losing pressure on the motor stator core assembly, thus loosening the welded motor stator core.

[0015] Furthermore, it also includes welding perforated grooves. The sidewall of the gathering ring has a circular array of twelve welding perforated grooves, which are alternately distributed with the twelve gathering guide grooves. After the gathering ring moves upward, it is brought together by the twelve gathering clamping inclined plates to clamp the twelve motor stator core blocks into a circle. At this time, the twelve welds between the twelve motor stator core blocks correspond to the twelve welding perforated grooves, and the laser welding gun can weld the corresponding welds through the welding perforated grooves.

[0016] Furthermore, the inner core fixture includes a core tray, a core column, a core limiting assembly, and a tray lifting assembly. The tray lifting assembly is installed in the center of the disc, with its top fixedly connected to the bottom of the core tray. The bottom of the core column is fixedly connected to the upper center of the core tray. Core limiting assemblies are installed on the core tray and core column. The core tray supports twelve motor stator core blocks. The core column limits the inner sides of the twelve motor stator core blocks. When the twelve clamping inclined plates converge, they work with the core column to clamp the twelve motor stator core blocks together. The tray lifting assembly moves the core tray up and down to adjust its horizontal height, ensuring that the weld seam between adjacent motor stator core blocks after merging corresponds to the height of the welding slot, facilitating welding through the welding slot using a laser welding gun. The core limiting component limits the bottom of the motor stator core assembly, allowing the motor stator core assembly placed on the core tray to be stably and vertically positioned around the core column.

[0017] Furthermore, the core limiting assembly includes limiting ring grooves, stator winding anti-interference grooves, and magnetic pillars. The limiting ring grooves are formed on the upper side of the core tray, and stator winding anti-interference grooves are formed at the bottom of the limiting ring grooves corresponding to the positions of each convergence guide groove. A magnetic pillar is installed in the middle of the core pillar. The limiting ring grooves limit the bottom of the twelve motor stator core assemblies. Since the motor stator core assemblies generally have windings before welding, the bottom of the motor stator core assemblies is not flush due to the presence of the windings. Therefore, when placed in the limiting ring grooves on the core tray, they are prone to tipping over, causing the motor stator core assemblies to scatter. Therefore, stator winding anti-interference grooves are provided, with the bottom of the windings on the motor stator core assemblies corresponding to the stator winding anti-interference grooves, allowing the bottom of the motor stator core assemblies to be stably placed in the limiting ring grooves. The magnetic force of the magnetic pillar allows the motor stator core assemblies to stably move towards the core pillar. After the robotic arm places the twelve motor stator core blocks onto the core tray, it can maintain a stable vertical position, which facilitates the subsequent gathering component to work with the gathering clamping inclined plate to clamp the twelve motor stator core blocks together.

[0018] Furthermore, the split stator welding mechanism includes radial slide rails, sliding blocks, spring mounting brackets, radial tension springs, vertical rails, right-angled triangular guide plates, guide rollers, vertical rods, and weld assembly. Four radial slide rails are arranged at equal angles around the bearing seat on the upper side of the equipment platform. A sliding block is slidably connected within each radial slide rail. The side of the sliding block away from the retracting ring is connected to one end of the radial tension spring, and the other end of the radial tension spring is connected to the equipment platform via the spring mounting bracket. The top of the sliding block is fixedly connected to the bottom end of the vertical rail. A weld assembly is installed on the vertical rail. One right-angled side of the right-angled triangular guide plate is fixedly connected to the side of the vertical rail away from the retracting ring. The other right-angled side of the right-angled triangular guide plate is flush with the top surface of the vertical rail. A vertical rod is slidably connected vertically on the equipment platform. A guide roller is rotatably connected to the top of the vertical rod. The guide roller is rotatably connected to the hypotenuse of the right-angled triangular guide plate. When the radial tension spring is in its natural state, the sliding block is located at the end of the radial slide rail away from the retracting ring, and the guide roller is located at the bottom of the hypotenuse of the right-angled triangular guide plate.

[0019] Furthermore, the weld assembly includes a sliding rod, a vertical tension spring, a stop bar, a limiting groove, a bending frame, a welding gun holder, and a laser welding gun. The sliding rod is vertically slidably connected in the groove of the vertical rail. The bottom end of the sliding rod is connected to the bottom of the groove of the vertical rail through a vertical tension spring. The top of the sliding rod is fixedly connected to one end of the stop bar, which is located on the upper side of the right-angled triangular guide plate. A limiting groove is formed on the lower side of the end of the stop bar away from the sliding rod. The top of the sliding rod is connected to one end of the bending frame, and a welding gun holder is provided at the other end of the bending frame. A laser welding gun is installed on the welding gun holder.

[0020] The welding torch displacement mechanism drives four vertical rods upwards, which in turn drive guide rollers upwards, causing the guide rollers to roll into contact with the hypotenuse of the right-angled triangular guide plate. Guided by the hypotenuse of the right-angled triangular guide plate, the guide rollers push the vertical rails and sliding blocks along the radial rails towards the assembled motor stator core. This, through the bending frame and welding torch holder, causes the laser welding torch to extend into the bottom of the corresponding welding slot and gradually approach the bottom of the weld between two adjacent motor stator core blocks. During this process, the radial tension spring is gradually stretched. When the guide rollers roll to the top of the hypotenuse of the right-angled triangular guide plate, the distance between the welding end of the laser welding torch and the bottom of the weld is exactly the appropriate working distance. At this point, the laser welding torch is controlled to operate, and the laser welding torch welds the bottom of the weld. The welding torch shifting power mechanism continues to drive the vertical rod upwards, and the guide roller rolls into the limiting groove at the end of the stop rod. The limiting groove cooperates with the guide roller. As the vertical rod continues to move upwards, the vertical rail no longer moves along the radial slide rail via the sliding block. The vertical rod continues to move upwards, and the guide roller supports the stop rod upwards. At this time, the sliding rod moves upwards along the groove of the vertical rail, and the vertical tension spring is stretched. The sliding rod drives the laser welding torch upwards through the bending frame and the welding torch seat. The laser welding torch gradually welds upwards along the weld seam until the weld seam is completed and stops. Then, the welding torch shifting power mechanism drives the four vertical rods downwards. The vertical tension spring shortens, pulling the sliding rod downwards. When the bottom of the stop rod contacts the top of the right-angled triangular guide plate, the sliding rod stops moving downwards. The laser welding torch gradually moves downwards until the welding end of the laser welding torch is at the bottom of the welding slot. Then, the guide roller resumes its rolling connection with the top of the hypotenuse of the right-angled triangular guide plate. As the guide rollers continue to descend, the radial tension springs gradually shorten, pulling the vertical rails away from the motor stator core assembly and causing the welding end of the laser welding guns to extend from the bottom of the welding slot. Once the radial tension springs have shortened to their natural state, the welding end of the laser welding guns is fully extended from the bottom of the welding slot, allowing the four laser welding guns to complete the welding of four seams. Because the welding end of the laser welding guns is now fully extended from the welding slot, when the rotary displacement power assembly drives the rotating drum and the core retracting clamp to rotate 30 degrees, the laser welding guns will not interfere with the rotation of the retracting ring in the core retracting clamp.

[0021] Furthermore, the welding torch shifting power mechanism includes a shifting power hydraulic cylinder, a connecting sleeve, and a synchronization frame. A vertical shifting power hydraulic cylinder is mounted on the equipment platform. The telescopic end of the shifting power hydraulic cylinder is connected to the synchronization frame via the connecting sleeve. The synchronization frame is connected to the bottom ends of four vertical rods. When the shifting power hydraulic cylinder extends or retracts, it drives the synchronization frame to move up and down through the connecting sleeve, thus synchronously driving the four vertical rods to move up and down.

[0022] Compared with existing technologies, the advantages of this iron core rounding welding equipment are:

[0023] 1. The robot arm places twelve motor stator core blocks onto the inner core fixture. The clamping and retracting lifting mechanism drives the core retracting clamp to work, so that the core retracting clamp works with the inner core fixture to clamp the twelve motor stator core blocks together. The retracting operation can be achieved with just the clamping and retracting lifting mechanism, which is convenient and quick to adjust.

[0024] 2. The welding torch shifting power mechanism drives four separate stator welding mechanisms to approach the four motor stator core welds to be welded, and then welds the welds from bottom to top. After the four welds are completed, the rotation shifting power component drives the rotating drum to rotate 30 degrees relative to the bearing seat. The four separate stator welding mechanisms align with the welds of another set of four motor stator cores, and the above welding process is repeated. After the four welds are completed, the rotation shifting power component continues to drive the rotating drum to rotate 30 degrees relative to the bearing seat, and the above welding process is repeated to complete the welding of the last four welds. In this way, the welding of the twelve motor stator core blocks and the twelve welds are completed, finally forming a complete motor stator core. Then, the clamp is retracted and the lifting mechanism drives the core to retract and the clamp is released. The robot arm takes away the motor stator core, which has high welding efficiency.

[0025] 3. The use of a single power unit enables the assembly of motor stator core blocks, facilitating debugging and adjustment, and improving the concentricity of the motor stator core products. Furthermore, the laser welding gun, using a single power unit, can perform two actions: approaching the motor stator core and moving along the weld seam of the motor stator core, which helps improve laser welding efficiency. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the core round welding equipment of the present invention;

[0027] Figure 2 For the present invention Figure 1 A magnified view of the structure at point A in the middle;

[0028] Figure 3 This is a bottom view schematic diagram of the iron core round welding equipment of the present invention;

[0029] Figure 4 For the present invention Figure 3 A magnified schematic diagram of the structure at point B in the middle;

[0030] Figure 5 This is a partial structural diagram of the iron core round welding equipment of the present invention;

[0031] Figure 6 This is a schematic diagram of a portion of the iron core rounding clamp and the inner core tooling in the iron core rounding welding equipment of the present invention;

[0032] Figure 7 This is a partial structural diagram of the iron core rounding clamp in the iron core rounding welding equipment of the present invention;

[0033] Figure 8 This is a schematic diagram of the split stator welding mechanism in the iron core round welding equipment of the present invention;

[0034] Figure 9 This is a partial structural diagram of the split stator welding mechanism in the iron core round welding equipment of the present invention. Figure 1 ;

[0035] Figure 10 This is a partial structural diagram of the split stator welding mechanism in the iron core round welding equipment of the present invention. Figure 2 ;

[0036] In the diagram: 1. Equipment platform; 2. Welding section rotation and shifting mechanism; 21. Bearing seat; 22. Bearing; 23. Rotary drum; 24. Belt pulley one; 25. Belt one; 26. Belt pulley two; 27. Motor arch frame; 28. Rotary shifting motor; 3. Iron core rounding clamp; 31. Disc; 32. Support column; 33. Top seat; 34. Gathering ring; 35. Lifting seat; 36. Fixing ring; 37. T-slot; 38. T-shaped clamping block, 39. Inclined guide bar, 310. Closing clamping inclined plate, 311. Deformation groove, 312. Closing guide groove, 313. Welding hollow groove, 4. Inner core tooling, 41. Iron core tray, 42. Limiting ring groove, 43. Stator winding anti-interference groove, 44. Core column, 45. Magnetic column, 46. Mounting column, 47. Cylinder seat, 48. Lifting hydraulic cylinder, 5. Lifting mechanism for clamp closure, 51. Guide column, 52. Base plate, 53. Power motor, 54. Lead screw nut, 55. Lead screw, 56. Belt pulley three, 57. Belt two, 58. Belt pulley four. 6 Welding torch shifting power mechanism, 61 Shifting power hydraulic cylinder, 62 Connecting sleeve, 63 Synchronization frame, 7 Split stator welding mechanism, 71 Radial slide rail, 72 Sliding block, 73 Spring mounting bracket, 74 Radial tension spring, 75 Vertical rail, 76 Right-angle triangular guide plate, 77 Guide roller, 78 Vertical square rod, 79 Sliding rod, 710 Vertical tension spring, 711 Stop bar, 712 Limiting groove, 713 Bending frame, 714 Welding torch holder, 715 Laser welding torch, 716 Contact switch one, 717 Contact switch two. Detailed Implementation

[0037] 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.

[0038] Example 1, please refer to Figures 1 to 7This embodiment provides a technical solution: a core round welding device, including a device platform 1, a round groove in the middle of the device platform 1, and also a welding part rotation and displacement mechanism 2, a core round gathering fixture 3, an inner core tooling 4, a fixture gathering lifting mechanism 5, a welding torch displacement power mechanism 6, and a split stator welding mechanism 7.

[0039] The welding section rotation and displacement mechanism 2 includes a bearing seat 21, a bearing 22, a rotating cylinder 23, and a rotation and displacement power assembly. The bearing seat 21 is installed in the circular groove of the equipment platform 1 by screws. The rotating cylinder 23 is rotatably connected to the inner side of the bearing seat 21 by the bearing 22. The bottom end of the rotating cylinder 23 is connected to the rotation and displacement power assembly.

[0040] The rotary displacement power assembly includes pulley 24, belt 25, pulley 26, motor arch frame 27, and rotary displacement motor 28. Pulley 24 is mounted on the outer bottom periphery of the rotating drum 23. The rotary displacement motor 28 is mounted on the bottom of the equipment platform 1 via the motor arch frame 27. Pulley 26 is fixedly mounted on the output shaft of the rotary displacement motor 28, and pulley 26 is connected to pulley 24 via belt 25. When the rotary displacement motor 28 operates, it drives the rotating drum 23 to rotate relative to the bearing seat 21 through the transmission of pulley 24, belt 25, and pulley 26. The rotary displacement motor 28 is a servo motor capable of both forward and reverse rotation.

[0041] The iron core rounding clamp 3 is installed on the rotating drum 23, and the bottom of the iron core rounding clamp 3 is connected to the clamping lifting mechanism 5.

[0042] The core-gathering clamp 3 includes a disc 31, a fixing ring 36, a T-shaped slot 37, a T-shaped block 38, an inclined guide bar 39, a gathering clamping inclined plate 310, a deformation groove 311, a gathering assembly, and a movable guide assembly. The top of the rotating cylinder 23 is connected to the disc 31 by screws. The fixing ring 36 is installed on the upper center of the disc 31 by bolts. The top outer periphery of the fixing ring 36 has twelve T-shaped slots 37 arranged in a ring array. Each T-shaped slot 37 is equipped with a T-shaped block 38. The top of each T-shaped block 38 is fixedly connected to the gathering clamping inclined plate 310. The top width of the gathering clamping inclined plate 310 is greater than the bottom width. An inclined guide bar 39 is fixedly connected to the side of each gathering clamping inclined plate 310 away from the center of the disc 31. A deformation groove 311 is opened on the bottom side of the gathering clamping inclined plate 310 near the center of the disc 31. An active guide component is mounted on the disc 31, and a retractable component is connected to the top of the active guide component.

[0043] The clamping and retracting lifting mechanism 5 drives the movable guide component to move up and down, thereby driving the retracting component to move up and down. The T-shaped slot 37 and the T-shaped block 38 cooperate to achieve a detachable connection between the fixing ring 36 and the T-shaped block 38. Before placing the motor stator core assembly on the inner core fixture 4, the clamping and retracting lifting mechanism 5 drives the retracting component to descend through the movable guide component. The twelve retracting clamping inclined plates 310 are in an outwardly radiating open state, and the retracting clamping inclined plates 310 will not interfere with the placement of the motor stator core assembly on the inner core fixture 4. After the twelve motor stator core assemblies are placed in a circular array on the inner core fixture 4, the clamping and retracting lifting mechanism 5 drives the retracting component to move upward through the movable guide component. The retracting component uses the twelve inclined deformation guide bars 39 to bring the twelve retracting clamping inclined plates 310 closer together. The twelve retracting clamping inclined plates 310 are more easily deformed and brought closer together by the deformation grooves 311. When the twelve clamping inclined plates 310 move toward the center of the inner core fixture 4, they clamp the twelve motor stator core blocks together, with the inner side of each clamping inclined plate 310 aligned with the outer center of one motor stator core block. Because the twelve clamping inclined plates 310 move toward the center of the inner core fixture 4 simultaneously, the twelve motor stator core blocks can be accurately aligned into a circle.

[0044] The activity guiding component includes pillars 32, a top seat 33, and a lifting seat 35. Four sliding holes are arranged in a circular array along the top edge of the disc 31. Four pillars 32 are vertically slidably connected to each of the four sliding holes. The top ends of the four pillars 32 are fixedly connected to the four corners of the top seat 33, and the bottom ends of the four pillars 32 are fixedly connected to the four corners of the lifting seat 35. The lifting seat 35 is connected to a lifting mechanism 5 for clamp retraction. All four pillars 32 can move up and down relative to the disc 31, which can drive the top seat 33 to move stably up and down relative to the disc 31. The lifting seat 35 fixes the bottom ends of the four pillars 32 together, allowing them to move up and down synchronously.

[0045] The gathering assembly includes a gathering ring 34 and gathering guide grooves 312. The gathering ring 34 is fixedly connected to the center of the top seat 33. The inner side of the gathering ring 34 has twelve gathering guide grooves 312 arranged in a ring array. Each inclined guide bar 39 passes through the corresponding gathering guide groove 312. When the top seat 33 moves upward, it drives the gathering ring 34 to move upward. Due to the guidance of the gathering guide grooves 312 on the gathering ring 34 to the inclined guide bars 39, the inclined guide bars 39 can help the gathering clamping inclined plates 310 move closer to the center of the inner core fixture 4. When the top seat 33 moves downward, it drives the gathering ring 34 to move downward. The pressure of the gathering ring 34 on the inclined guide bars 39 gradually decreases, and each gathering clamping inclined plate 310 gradually spreads outward, gradually losing pressure on the motor stator core assembly, and the welded motor stator core can be released.

[0046] It also includes welding perforated grooves 313. The side wall of the gathering ring 34 has a ring array of twelve welding perforated grooves 313, and the twelve welding perforated grooves 313 and twelve gathering guide grooves 312 are alternately distributed. After the gathering ring 34 moves upward, it is brought together by the twelve gathering clamping inclined plates 310 to clamp the twelve motor stator iron core blocks into a circle. At this time, the twelve welds between the twelve motor stator iron core blocks correspond to the twelve welding perforated grooves 313. The laser welding gun can weld the corresponding welds through the welding perforated grooves 313.

[0047] The clamp retraction lifting mechanism 5 includes guide posts 51, a base plate 52, a power motor 53, a lead screw nut 54, a lead screw 55, a third pulley 56, a second belt 57, and a fourth pulley 58. The bottom of the disc 31 is fixedly connected to the top of the four guide posts 51, and the bottom of the four guide posts 51 is fixedly connected to the base plate 52. The four guide holes on the lifting seat 35 are vertically slidably connected to the four guide posts 51 respectively. The middle of the lifting seat 35 is equipped with a lead screw nut 54, which is connected to the vertical lead screw 55. The lead screw 55 is rotatably connected to the base plate 52 through a bearing. The bottom of the lead screw 55 is fixedly connected to the third pulley 56. The base plate 52 is also equipped with a power motor 53. The output shaft of the power motor 53 is fixedly connected to the fourth pulley 58, and the fourth pulley 58 is connected to the third pulley 56 through the second belt 57. The power motor 53 operates, driving the lead screw 55 to rotate relative to the base plate 52 via pulleys 3 (56), 2 (57), and 4 (58). The threaded action between the lead screw 55 and the lead screw nut 54 causes the lifting seat 35 to move up and down along the vertical guide post 51. Clockwise rotation of the lead screw 55 causes the lifting seat 35 to move upwards along the vertical guide post 51. Counterclockwise rotation of the lead screw 55 causes the lifting seat 35 to move downwards along the vertical guide post 51. The power motor 53 is a servo motor capable of both forward and reverse rotation.

[0048] The inner core fixture 4 is installed in the middle of the iron core rounding and gathering fixture 3.

[0049] The inner core fixture 4 includes an iron core tray 41, a core column 44, an iron core limiting assembly, and a tray lifting assembly. The tray lifting assembly is installed in the middle of the disc 31. The top of the tray lifting assembly is fixedly connected to the bottom of the iron core tray 41. The bottom of the core column 44 is fixedly connected to the upper center of the iron core tray 41. The iron core limiting assembly is installed on the iron core tray 41 and the core column 44.

[0050] The pallet lifting assembly includes mounting posts 46, cylinder seats 47, and a lifting hydraulic cylinder 48. The cylinder seats 47 are mounted on the bottom of the disc 31 via two mounting posts 46. The fixed end of the lifting hydraulic cylinder 48 is mounted on the cylinder seats 47. The lifting hydraulic cylinder 48 is vertically oriented, and its telescopic end passes through the middle of the disc 31 and is fixedly connected to the bottom center of the iron core pallet 41. The mounting posts 46 and cylinder seats 47 are used to mount the lifting hydraulic cylinder 48. The telescopic movement of the lifting hydraulic cylinder 48 can move the iron core pallet 41 up and down, thereby adjusting the height of the iron core pallet 41.

[0051] The core tray 41 supports twelve motor stator core modules, with the core column 44 providing inner limit for each module. When the twelve clamping ramps 310 converge, they work with the core column 44 to clamp the twelve motor stator core modules together. The tray lifting assembly moves the core tray 41 up and down, adjusting its horizontal height so that the weld seam between adjacent stator core modules aligns with the height of the welding slot 313, facilitating welding through the welding slot 313 using a laser welding gun. The core limiting assembly limits the bottom of the motor stator core modules, ensuring they are stably and vertically positioned around the core column 44 on the core tray 41.

[0052] The split stator welding mechanism 7 has four parts, which are distributed at equal angles around the bearing seat 21, and the bottom of each of the four split stator welding mechanisms 7 is connected to the welding gun displacement power mechanism 6.

[0053] In operation, a robotic arm places twelve motor stator core blocks onto the inner core fixture 4. A lifting mechanism 5 drives the core-closing clamp 3 to work, clamping the twelve motor stator core blocks together with the inner core fixture 4. The welding torch shifting power mechanism 6 drives four separate stator welding mechanisms 7 to approach the four motor stator core welds to be welded, then welds the welds from bottom to top. After the four welds are completed, the rotary shifting power assembly drives the rotating drum 23 to rotate 30 degrees relative to the bearing seat 21, aligning the four separate stator welding mechanisms 7 with another set of four motor stator core welds. This welding process is repeated until the four welds are completed. Then, the rotary shifting power assembly continues to drive the rotating drum 23 to rotate 30 degrees relative to the bearing seat 21, repeating the welding process to complete the final four welds. This completes the welding of twelve stator core blocks into a circle, forming a complete stator core. Then, the lifting mechanism 5 uses the clamping and retraction mechanism 3 to release the stator core, allowing the robotic arm to remove it.

[0054] Example 2, please refer to Figures 1 to 7This embodiment provides a technical solution: a core round welding device. This embodiment is a further explanation of the structure of Embodiment 1.

[0055] The core limiting assembly includes a limiting ring groove 42, a stator winding anti-interference groove 43, and a magnetic column 45. The limiting ring groove 42 is opened on the upper side of the core tray 41. The bottom of the limiting ring groove 42 is provided with stator winding anti-interference grooves 43 corresponding to the positions of each gathering guide groove 312. A magnetic column 45 is installed in the middle of the core column 44. The limiting ring groove 42 limits the bottom of the twelve motor stator core blocks. Since the motor stator core blocks are generally wound with windings before welding, the bottom of the motor stator core blocks is not flat due to the presence of windings. Therefore, when placed in the limiting ring groove 42 on the core tray 41, they are prone to tipping over, causing the motor stator core blocks to scatter. Therefore, a stator winding anti-interference groove 43 is provided, and the bottom of the winding on the motor stator core assembly corresponds to the stator winding anti-interference groove 43, so that the bottom of the motor stator core assembly can be stably placed in the limiting ring groove 42. The magnetic force of the magnetic column 45 can make the motor stator core assembly move stably towards the core column 44. After the robot arm places the twelve motor stator core assemblies on the core tray 41, it can maintain a stable vertical state, which is conducive to the subsequent gathering assembly cooperating with the gathering clamping inclined plate 310 to clamp the twelve motor stator core assemblies together.

[0056] Example 3, please refer to Figures 1 to 10 This embodiment provides a technical solution: a core round welding device. This embodiment is a further explanation of the structure of Embodiment 2.

[0057] The split stator welding mechanism 7 includes radial slide rails 71, sliding blocks 72, spring mounting brackets 73, radial tension springs 74, vertical rails 75, right-angled triangular guide plates 76, guide rollers 77, vertical square rods 78, and weld assembly. Four radial slide rails 71 are arranged at equal angles around the bearing seat 21 on the upper side of the equipment platform 1, and the radial slide rails 71 are distributed radially along the retractable ring 34. Each radial slide rail 71 has a sliding block 72 slidably connected within it. The side of the sliding block 72 away from the retractable ring 34 is connected to one end of the radial tension spring 74, and the other end of the radial tension spring 74 is connected to the equipment platform 1 via the spring mounting bracket 73. The top of the sliding block 72 is fixedly connected to the bottom end of the vertical rail 75, and the weld assembly is mounted on the vertical rail 75. A right-angled triangular guide plate 76 is fixedly connected to the side of the vertical rail 75 away from the retracting ring 34. The other right-angled side of the right-angled triangular guide plate 76 is flush with the top surface of the vertical rail 75. A vertical square rod 78 is vertically slidably connected to the equipment platform 1. A guide roller 77 is rotatably connected to the top of the square rod 78. The guide roller 77 is in rolling connection with the hypotenuse of the right-angled triangular guide plate 76. When the radial tension spring 74 is in its natural state, the sliding block 72 is located at the end of the radial slide rail 71 away from the retracting ring 34, and the guide roller 77 is located at the bottom of the hypotenuse of the right-angled triangular guide plate 76.

[0058] The welding assembly includes a sliding rod 79, a vertical tension spring 710, a stop bar 711, a limiting groove 712, a bending frame 713, a welding gun holder 714, and a laser welding gun 715. The sliding rod 79 is vertically slidably connected in the groove of the vertical rail 75. The bottom end of the sliding rod 79 is connected to the bottom of the groove of the vertical rail 75 through the vertical tension spring 710. The top of the sliding rod 79 is fixedly connected to one end of the stop bar 711. The stop bar 711 is located on the upper side of the right-angled triangular guide plate 76, and a limiting groove 712 is opened on the lower side of the end of the stop bar 711 away from the sliding rod 79. The top of the sliding rod 79 is fixedly connected to one end of the bending frame 713 by screws. The other end of the bending frame 713 is provided with a welding gun holder 714, and a laser welding gun 715 is installed on the welding gun holder 714.

[0059] The welding torch shifting power mechanism 6 includes a shifting power hydraulic cylinder 61, a connecting sleeve 62, and a synchronization frame 63. A vertical shifting power hydraulic cylinder 61 is installed on the equipment platform 1. The telescopic end of the bottom of the shifting power hydraulic cylinder 61 is connected to the synchronization frame 63 via the connecting sleeve 62. The synchronization frame 63 is connected to the bottom ends of four vertical rods 78. When the shifting power hydraulic cylinder 61 extends or retracts, it drives the synchronization frame 63 to move up and down via the connecting sleeve 62. With the help of the synchronization frame 63, the four vertical rods 78 can move up and down synchronously.

[0060] The specific welding process is as follows: The welding torch displacement power mechanism 6 drives the four vertical rods 78 to move upward, and the vertical rods 78 drive the guide rollers 77 to move upward, allowing the guide rollers 77 to roll into contact with the hypotenuse of the right-angled triangular guide plate 76. Guided by the hypotenuse of the right-angled triangular guide plate 76, the guide rollers 77 push the vertical rails 75 and sliding blocks 72 along the radial slide rails 71 towards the assembled motor stator core, thereby driving the laser welding torch 715 to extend into the bottom of the corresponding welding slot 313 and gradually approach the bottom of the weld between the adjacent two motor stator core blocks through the bending frame 713 and the welding torch holder 714. During this process, the radial tension spring 74 is gradually stretched. When the guide rollers 77 roll to the top of the hypotenuse of the right-angled triangular guide plate 76, the distance between the welding end of the laser welding torch 715 and the bottom of the weld is exactly the appropriate working distance. At this time, the laser welding torch 715 is controlled to work, and the laser welding torch 715 welds the bottom of the weld. The welding torch shifting power mechanism 6 continues to drive the vertical rod 78 upward, and the guide roller 77 rolls into the limiting groove 712 at the end of the stop rod 711, where the limiting groove 712 engages with the guide roller 77. As the vertical rod 78 continues to move upward, the vertical rail 75 no longer moves along the radial slide rail 71 via the sliding block 72. The continued upward movement of the vertical rod 78 will support the stop rod 711 upward via the guide roller 77. At this time, the sliding rod 79 moves upward along the groove of the vertical rail 75, and the vertical tension spring 710 is stretched. The sliding rod 79 drives the laser welding torch 715 upward through the bending frame 713 and the welding torch holder 714. The laser welding torch 715 gradually welds upward along the weld seam until the weld seam is completed and then stops. Then, the welding torch displacement power mechanism 6 drives the four vertical rods 78 downwards, the vertical tension spring 710 shortens, pulling the sliding rod 79 downwards. When the bottom of the stop rod 711 contacts the top of the right-angled triangular guide plate 76, the sliding rod 79 stops moving downwards, and the laser welding torch 715 gradually moves downwards until the welding end of the laser welding torch 715 is at the bottom of the welding slot 313. Then, the guide roller 77 resumes its rolling connection with the top of the hypotenuse of the right-angled triangular guide plate 76. As the guide roller 77 continues to descend, the radial tension spring 74 gradually shortens, pulling the vertical rail 75 away from the motor stator core block, causing the welding end of the laser welding torch 715 to extend from the bottom of the welding slot 313. When the radial tension spring 74 shortens to its natural state, the welding end of the laser welding torch 715 is just fully extended from the bottom of the welding slot 313, thus allowing the four laser welding torches 715 to complete the welding of the four weld seams. Since the welding end of the laser welding gun 715 has completely extended out of the welding slot 313, when the rotational displacement power component drives the rotating drum 23 and the iron core rounding clamp 3 to rotate, the laser welding gun 715 will not interfere with the rotation of the rounding ring 34 in the iron core rounding clamp 3.

[0061] After the four welds are completed, the rotary displacement power unit drives the rotating drum 23 to rotate 30 degrees relative to the bearing seat 21, repeating the above welding process to complete the welding of the other set of four motor stator core welds. Then, the rotary displacement power unit drives the rotating drum 23 to rotate 30 degrees relative to the bearing seat 21 again, repeating the above welding process to complete the welding of the last four motor stator core welds, ultimately forming a complete motor stator core. Then, the clamping and lifting mechanism 5 drives the core closing clamp 3 to release the motor stator core, and the robot arm removes the welded motor stator core.

[0062] It also includes contact switch one 716 and contact switch two 717. Contact switch one 716 is installed at the top of each radial slide rail 71 near the retracting ring 34. When the guide roller 77 rolls to the top of the hypotenuse of the right-angled triangular guide plate 76, the distance between the welding end of the laser welding gun 715 and the bottom of the weld is exactly the appropriate working distance. The bottom of the vertical rail 75 triggers contact switch one 716. The output of contact switch one 716 is electrically connected to an external controller, sending an electrical signal to the external controller. At this time, the external controller controls the laser welding gun 715 to start working. Contact switch two 717 is installed at the bottom of the equipment platform 1 corresponding to the position of the synchronization frame 63. As the sliding rod 79 drives the laser welding gun 715 to continuously move upwards to weld the weld. When the laser welding torch 715 finishes welding the top of the weld, the displacement hydraulic cylinder 61 moves the synchronization frame 63 closer to the lower side of the equipment platform 1. At this time, the synchronization frame 63 triggers contact switch 717, which sends an electrical signal to the external controller, causing the external controller to stop the laser welding torch 715 from working. By using contact switches 716 and 717 to control the on / off state of the laser welding torch 715, the laser welding torch 715 can operate along the correct path.

[0063] The external controller is a PLC controller, which is used to control the operation of the rotary displacement motor 28, the power motor 53, the lifting hydraulic cylinder 48, the displacement power hydraulic cylinder 61, and the laser welding gun 715. The control method adopts existing technology.

[0064] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0065] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A core welding device, comprising a platform (1), wherein a circular groove is provided in the middle of the platform (1), characterized in that, Also includes: The welding section rotation and displacement mechanism (2) includes a bearing seat (21). The bearing seat (21) is installed in the circular groove of the equipment platform (1). The inner side of the bearing seat (21) is rotatably connected to a rotating cylinder (23). The bottom end of the rotating cylinder (23) is connected to a rotation and displacement power assembly. The iron core rounding clamp (3) is installed on the rotating drum (23), and the bottom of the iron core rounding clamp (3) is connected to the clamping lifting mechanism (5). The inner core fixture (4) is installed in the middle of the iron core rounding and gathering fixture (3); The split stator welding mechanism (7) has four parts that are distributed at equal angles around the bearing seat (21), and the bottom of each of the four split stator welding mechanisms (7) is connected to the welding gun shifting power mechanism (6). The core retracting clamp (3) includes a disc (31), a fixing ring (36), a T-shaped slot (37), a T-shaped block (38), an inclined guide bar (39), a retracting clamping inclined plate (310), a deformation groove (311), a retracting assembly, and a movable guide assembly. The top of the rotating cylinder (23) is connected to the disc (31). The fixing ring (36) is installed in the middle of the upper side of the disc (31). The top outer periphery of the fixing ring (36) is provided with twelve T-shaped slots (37) arranged in a ring array. Each T-shaped slot... T-shaped blocks (38) are installed in the slot (37). Each T-shaped block (38) is fixedly connected to the top of a folding clamping ramp (310). Each folding clamping ramp (310) is fixedly connected to a slanted guide strip (39) on the side away from the center of the disc (31). A deformation groove (311) is opened on the bottom of the folding clamping ramp (310) near the center of the disc (31). A movable guide component is installed on the disc (31). The top of the movable guide component is connected to the folding component. The active guide assembly includes a support column (32), a top seat (33), and a lifting seat (35). The top edge of the disc (31) is provided with four sliding holes in a circular array. Four support columns (32) are vertically slidably connected in the four sliding holes. The top ends of the four support columns (32) are fixedly connected to the four corners of the top seat (33), and the bottom ends of the four support columns (32) are fixedly connected to the four corners of the lifting seat (35). The lifting seat (35) is connected to the lifting mechanism (5) for clamp retraction. The gathering assembly includes a gathering ring (34) and a gathering guide groove (312). The gathering ring (34) is fixedly connected to the middle of the top seat (33). Twelve gathering guide grooves (312) are arranged in a ring array on the inner side of the gathering ring (34). Each oblique deformable guide bar (39) passes through the corresponding gathering guide groove (312). The split stator welding mechanism (7) includes a radial slide rail (71), a sliding block (72), a spring mounting bracket (73), a radial tension spring (74), a vertical rail (75), a right-angled triangular guide plate (76), a guide roller (77), a vertical square rod (78), and a weld assembly. Four radial slide rails (71) are arranged at equal angles around the bearing seat (21) on the upper side of the equipment platform (1). Each radial slide rail (71) is slidably connected to a sliding block. Block (72), the side of the sliding block (72) away from the gathering ring (34) is connected to one end of the radial tension spring (74), the other end of the radial tension spring (74) is connected to the equipment platform (1) through the spring mounting bracket (73), the top of the sliding block (72) is fixedly connected to the bottom end of the vertical rail (75), the vertical rail (75) is equipped with a weld seam welding assembly, the side of the vertical rail (75) away from the gathering ring (34) is fixedly connected to one right-angled side of the right-angled triangular guide plate (76), the other right-angled side of the right-angled triangular guide plate (76) is flush with the top surface of the vertical rail (75), the equipment platform (1) is vertically slidably connected to a vertical square rod (78), the top of the vertical square rod (78) is rotatably connected to a guide roller (77), the guide roller (77) is slidably connected to the hypotenuse of the right-angled triangular guide plate (76).

2. The iron core rounding welding equipment according to claim 1, characterized in that: It also includes welding perforated grooves (313), and the side wall of the gathering ring (34) is provided with twelve welding perforated grooves (313), and the twelve welding perforated grooves (313) and the twelve gathering guide grooves (312) are alternately distributed.

3. The iron core rounding welding equipment according to claim 1, characterized in that: The inner core tooling (4) includes an iron core tray (41), a core column (44), an iron core limiting component, and a tray lifting component. The tray lifting component is installed in the middle of the disc (31). The top of the tray lifting component is fixedly connected to the bottom end of the iron core tray (41). The bottom end of the core column (44) is fixedly connected to the upper center of the iron core tray (41). The iron core limiting component is installed on the iron core tray (41) and the core column (44).

4. The iron core rounding welding equipment according to claim 3, characterized in that: The core limiting assembly includes a limiting ring groove (42), a stator winding anti-interference groove (43), and a magnetic column (45). The upper side of the core tray (41) has a limiting ring groove (42). The bottom of the limiting ring groove (42) is provided with stator winding anti-interference grooves (43) corresponding to the positions of each gathering guide groove (312). A magnetic column (45) is installed in the middle of the core column (44).

5. The iron core rounding welding equipment according to claim 1, characterized in that: The weld assembly includes a sliding rod (79), a vertical tension spring (710), a stop rod (711), a limiting groove (712), a bending frame (713), a welding gun holder (714), and a laser welding gun (715). The sliding rod (79) is vertically slidably connected in the groove of the vertical rail (75). The bottom end of the sliding rod (79) is connected to the bottom of the groove of the vertical rail (75) through the vertical tension spring (710). The top of the sliding rod (79) is fixedly connected to one end of the stop rod (711). The stop rod (711) is located on the upper side of the right-angled triangular guide plate (76), and a limiting groove (712) is opened on the lower side of the end of the stop rod (711) away from the sliding rod (79). The top of the sliding rod (79) is connected to one end of the bending frame (713). The other end of the bending frame (713) is provided with a welding gun holder (714), and a laser welding gun (715) is installed on the welding gun holder (714).

6. The iron core rounding welding equipment according to claim 1, characterized in that: The welding torch shifting power mechanism (6) includes a shifting power hydraulic cylinder (61), a connecting sleeve (62) and a synchronization frame (63). A vertical shifting power hydraulic cylinder (61) is installed on the equipment platform (1). The telescopic end of the bottom of the shifting power hydraulic cylinder (61) is connected to the synchronization frame (63) through the connecting sleeve (62). The synchronization frame (63) is connected to the bottom ends of four vertical rods (78).

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