Combined tool for stator assembly welding

Abstract

The invention discloses a combined tool for stator assembly welding. The combined tool comprises a base, a fixing mechanism, a wire mounting mechanism, a garland clamping mechanism, a terminal mounting mechanism and a clamping mechanism. Wherein the fixing mechanism is connected to the base, the fixing mechanism is used for positioning and installing a stator assembly, and the wire installation mechanism is connected to the base. The wire mounting mechanism is used for positioning and placing a star point wire and enabling a wire pin in the star point wire to be aligned and contacted with a corresponding wire head in the stator assembly to form a to-be-welded part; the garland clamping mechanism is used for clamping and fixing a garland copper wire and assembling the garland copper wire on the stator assembly, so that a wire leg in the garland copper wire is aligned and contacted with a corresponding wire end in the stator assembly to form a to-be-welded part, and the terminal mounting mechanism is connected to the garland clamping mechanism; and the terminal mounting mechanism is used for mounting a three-phase terminal. According to the invention, a star point line, a garland copper wire and a three-phase terminal can be fixedly clamped on the stator assembly.

Description

Technical Field

[0001] The present invention relates to a combined tooling for welding a stator assembly. Background Art

[0002] At present, with the continuous development of motor technology, in some new motors, it is necessary to weld a star point wire, a wreath copper wire and three-phase terminals on a stator assembly, and the wreath copper wire is spliced and combined by a plurality of jumper wires. When welding, a tooling is required to fix and clamp the star point wire, the wreath copper wire and the three-phase terminals on the stator assembly, and then the star point wire, the wreath copper wire and the three-phase terminals are all welded on the stator assembly through a welding device. However, after retrieval, it is found that there is no tooling in the prior art that can fix and clamp the star point wire, the wreath copper wire and the three-phase terminals on the stator assembly. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a combined tooling for welding a stator assembly, which can fix and clamp a star point wire, a wreath copper wire and three-phase terminals on the stator assembly.

[0004] To solve the above technical problem, the technical solution of the present invention is: a combined tooling for welding a stator assembly, comprising a base, a fixing mechanism, a wire mounting mechanism, a wreath clamping mechanism, a terminal mounting mechanism and a clamping mechanism; The fixing mechanism is connected to the base, and the fixing mechanism is used for positioning and mounting the stator assembly; The wire mounting mechanism is connected to the base, and the wire mounting mechanism is used for positioning and placing the star point wire and aligning the wire feet in the star point wire with the corresponding wire heads in the stator assembly to form a welding part to be welded; The wreath clamping mechanism is used for clamping and fixing the wreath copper wire and assembling it on the stator assembly so that the wire feet in the wreath copper wire are aligned with the corresponding wire heads in the stator assembly to form a welding part to be welded; The terminal mounting mechanism is connected to the wreath clamping mechanism, and the terminal mounting mechanism is used for mounting three-phase terminals and aligning the wire feet on the three-phase terminals with the corresponding wire heads in the stator assembly to form a welding part to be welded; The clamping mechanism is used for positioning and mounting on the stator assembly and for clamping the wire heads and wire feet in the welding part to be welded together.

[0005] Furthermore, a specific structure of the fixing mechanism is provided. The fixing mechanism includes a first positioning clip and a plurality of fixing blocks connected to the base and arranged in sequence along the circumferential direction; The fixing block has a supporting surface for supporting the lower end surface of the stator core in the stator assembly; The fixed block further has a positioning side surface for fitting and abutting against the inner side wall of the stator core; The first positioning clip is connected to the fixed block and is used for being clamped in a first clamping groove on the inner side wall of the stator core to define the circumferential position of the stator core.

[0006] Furthermore, a specific structure of the wire mounting mechanism is provided. The wire mounting mechanism includes a mounting base, at least one supporting block, and at least one limiting block; The mounting base is connected to the base; The supporting block has a material supporting portion. The supporting block is slidably connected to the mounting base and is used for sliding to make the material supporting portion extend above the stator assembly on the fixing mechanism, and the supporting block is further used for sliding to make the material supporting portion withdraw from above the stator assembly; A positioning placement groove for positioning and placing the star point wire is provided on the material supporting portion; The limiting block has a limiting portion. The limiting block is slidably connected to the mounting base and is used for sliding to make the limiting portion extend above the star point wire in the positioning placement groove to limit the star point wire in the positioning placement groove, and the limiting block is further used for sliding to make the limiting portion withdraw from above the star point wire;

[0007] Furthermore, a specific structure of the wreath clamping mechanism is provided. The wreath clamping mechanism includes a clamping base, a first driving mechanism, and a plurality of cover plates; A plurality of supporting piece portions arranged at intervals in sequence along the circumferential direction are provided on the outer peripheral portion of the clamping base. The supporting piece portions protrude radially outward and are used for abutting against one end of the wreath copper wire; The cover plates are arranged in sequence along the circumferential direction of the clamping base and are slidably connected to the clamping base along the radial direction of the clamping base; The first driving mechanism is connected to the clamping base and is connected to the cover plates. The first driving mechanism is used for driving the cover plates to move radially outward so that the cover plates extend outward to abut against the other end of the wreath copper wire, thereby clamping and limiting the wreath copper wire between the supporting piece portions and the cover plates. The first driving mechanism is further used for driving the cover plates to move radially inward so that the cover plates retract inward to release the abutting against the wreath copper wire, thereby releasing the clamping and limiting of the wreath copper wire; The clamping base is used for positioning and assembling on the upper end portion of the stator core in the stator assembly so that the wire feet in the wreath copper wire clamped and limited between the supporting piece portions and the cover plates are aligned and contacted with the corresponding wire heads in the stator assembly to form the portion to be welded.

[0008] Further, a positioning structure for positioning and assembling with the inner peripheral portion of the upper end of the stator core is provided on the clamping seat, and the positioning structure includes a second positioning clip and a plurality of first positioning portions; The first positioning portions are provided on the clamping seat and are arranged at intervals in the circumferential direction in sequence; On the first positioning portion, a first end face abutting portion for abutting against the upper end face of the inner peripheral portion of the stator core and a first side face abutting portion for cooperating with and abutting against the inner side wall of the stator core are provided; The second positioning clip is connected to the first positioning portion and is used for being clamped in a second card slot on the inner side wall of the stator core to limit the circumferential position of the clamping seat; The first driving mechanism includes a first driving ring and a handle; The first driving ring is rotatably connected in the clamping seat, and a plurality of first driving grooves are provided on the first driving ring; A first transmission pin is connected to the cover plate, and the first transmission pin is fitted in the corresponding first driving groove; The handle is connected to the first driving ring and is used for driving the first driving ring to rotate, and then driving the cover plate to move radially;

[0009] Further, a specific structure of the terminal mounting mechanism is provided. The terminal mounting mechanism includes a base and a mounting component corresponding to the three-phase terminals; The mounting component includes a slider, a pressing seat, a pressing rod, a spring and a locking component; An opening groove for mounting the three-phase terminals is provided in the slider. A ring groove is provided on the side wall of the three-phase terminals, and a boss portion for being inserted into the ring groove to support the three-phase terminals is provided on the side wall of the opening groove; The pressing seat is connected to the slider; The pressing rod is slidably connected in the pressing seat in the up-and-down direction and is used for abutting against the three-phase terminals mounted in the opening groove; The spring abuts against the pressing seat and the pressing rod respectively and is used for driving the pressing rod to abut tightly against the three-phase terminals in the opening groove to press and fix the three-phase terminals in the opening groove; The base is connected to the clamping seat; The slider is slidably connected to the base in the radial direction of the clamping seat. The slider is used for sliding radially outward to the in-place position, and then driving the three-phase terminals in the opening groove to be assembled in place so that the leads of the three-phase terminals are aligned and contacted with the corresponding lead ends in the stator assembly to form the portion to be welded. The slider is further used for sliding radially inward to the in-place position so that the three-phase terminals welded on the stator assembly are withdrawn from the opening groove; The locking component is used to lock and fix the slider on the base when the slider slides radially outwards to the in-place position.

[0010] A specific structure of the clamping mechanism is further provided. The clamping mechanism includes a clamping seat, a second driving mechanism, a plurality of outer clamping heads, and a plurality of inner clamping heads; The outer clamping heads are arranged in sequence along the circumferential direction of the clamping seat and are slidably connected to the clamping seat along the radial direction of the clamping seat. A first sliding groove is provided in the outer clamping heads; The inner clamping heads correspond to the outer clamping heads one by one and are slidably arranged in the first sliding grooves in the corresponding outer clamping heads along the radial direction of the clamping seat. A clamping hole for the part to be welded to extend into is provided between the inner clamping heads and the outer clamping heads; The clamping seat is used to be positioned and installed on the upper end of the stator core in the stator assembly so that the part to be welded extends into the corresponding clamping hole; The second driving mechanism is connected to the clamping seat. The second driving mechanism is respectively connected to the inner clamping heads and the outer clamping heads and is used to drive the inner clamping heads and the outer clamping heads to move in the radial direction in the opposite direction to clamp and release the wire heads and wire feet in the part to be welded.

[0011] A specific structure of the second driving mechanism is further provided. The second driving mechanism includes a second driving ring and an actuating mechanism; The second driving ring is rotatably connected in the clamping seat. A plurality of second driving grooves arranged in sequence along the circumferential direction and a plurality of third driving grooves arranged in sequence along the circumferential direction are provided on the second driving ring; A second transmission pin is connected to the outer clamping head, and the second transmission pin is fitted in the corresponding second driving groove. A third transmission pin is connected to the inner clamping head, and the third transmission pin is fitted in the corresponding third driving groove; The actuating mechanism is connected to the clamping seat. The actuating mechanism is connected to the second driving ring and is used to drive the second driving ring to rotate, and then drive the second transmission pin and the third transmission pin to move in the radial direction in the opposite direction through the second driving groove and the third driving groove, and further drive the inner clamping head and the outer clamping head to move in the radial direction in the opposite direction.

[0012] A specific structure of the actuating mechanism is further provided. The actuating mechanism includes a driving block, a fourth transmission pin, and a driving screw; The driving block is slidably connected to the clamping seat; The fourth transmission pin is connected to the driving block, and a fourth driving groove for mating with the fourth transmission pin is provided on the second driving ring; One end of the driving screw is rotatably connected to the driving block, and the driving screw is threadedly connected to the clamping seat so that when the driving screw rotates, the driving block is driven to move, and then the second driving ring is driven to rotate through the cooperation of the fourth transmission pin and the fourth driving groove.

[0013] Further, a first through hole is provided inside the clamping seat; The clamping seat is provided with a second positioning portion for positioning and assembling with the outer peripheral portion of the upper end of the stator core; The second positioning portion is provided with a second end face abutting portion for abutting against the upper end face of the outer peripheral portion of the stator core and a second side face abutting portion for cooperating with and abutting against the outer side wall of the stator core; A third positioning clip is connected to the second positioning portion, and the third positioning clip is used for being clamped in a third clamping groove on the outer side wall of the stator core to limit the circumferential position of the clamping seat.

[0014] After adopting the above technical solution, the star point wire, the flower ring copper wire and the three-phase terminals all have wire feet, and the stator assembly has a plurality of wire heads. Some of the wire heads are used for welding with the wire feet in the star point wire, some of the wire heads are used for welding with the wire feet in the flower ring copper wire, and some of the wire heads are used for welding with the wire feet in the three-phase terminals. Among them, the wire feet in the star point wire, the wire feet in the flower ring copper wire and the wire feet in the three-phase terminals are respectively used for forming a portion to be welded after being aligned and contacting the corresponding wire heads. First, the stator assembly is positioned and installed on the fixing mechanism, and then the star point wire is positioned and placed on the wire installation mechanism. At this time, the wire feet in the star point wire will be aligned and contact the corresponding wire heads in the stator assembly to form a portion to be welded. Then, the flower ring clamping mechanism is used to clamp and fix the flower ring copper wire and the flower ring clamping mechanism is assembled to the stator assembly so that the wire feet in the flower ring copper wire are aligned and contact the corresponding wire heads in the stator assembly to form a portion to be welded. Then, the three-phase terminals are installed in the terminal installation mechanism and the wire feet on the three-phase terminals are aligned and contact the corresponding wire heads in the stator assembly to form a portion to be welded. Then, the clamping mechanism is positioned and installed on the stator assembly and the wire heads and wire feet in each portion to be welded are respectively clamped together through the clamping mechanism, thereby realizing the fixation and clamping of the star point wire, the flower ring copper wire and the three-phase terminals on the stator assembly. Then, the stator assembly clamped with the star point wire, the flower ring copper wire and the three-phase terminals is sent into a welding device to weld each portion to be welded, and then the star point wire, the flower ring copper wire and the three-phase terminals are all welded on the stator assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of the combined tooling for welding the stator assembly of the present invention; Figure 2Exploded assembly view of the combined tooling for welding the stator assembly of the present invention; Figure 3 Schematic structural diagram of the fixing mechanism and the wire installation mechanism of the present invention; Figure 4 Schematic structural diagram of the stator assembly of the present invention installed on the fixing mechanism and the star point wire installed on the wire installation mechanism; Figure 5 Schematic structural diagram of the wreath clamping mechanism of the present invention; Figure 6 Exploded assembly view of the wreath clamping mechanism of the present invention; Figure 7 Schematic structural diagram of the wreath clamping mechanism positioned and installed on the stator assembly of the present invention; Figure 8 Schematic structural diagram of the terminal installation mechanism of the present invention; Figure 9 Cross-sectional view of the terminal installation mechanism of the present invention; Figure 10 Schematic structural diagram of the clamping mechanism of the present invention Figure 1 ; Figure 11 Schematic structural diagram of the clamping mechanism of the present invention Figure 2 ; Figure 12 In the present invention Figure 11 Partial detail drawing at location A; Figure 13 Schematic structural diagram of the clamping mechanism of the present invention clamping the part to be welded; In the figure: 1. Base; 2. Fixing mechanism; 3. Wire installation mechanism; 4. Wreath clamping mechanism; 5. Terminal installation mechanism; 6. Clamping mechanism; 7. Stator assembly; 8. Star point wire; 9. Wire foot; 10. Wire head; 11. Welding part to be welded; 12. Wreath copper wire; 13. Three-phase terminal; 14. Stator core; 15. Stator winding; 16. First card slot; 17. Second card slot; 18. First positioning clip; 19. Fixing block; 20. Supporting surface; 21. Positioning side surface; 22. Mounting seat; 23. Supporting block; 24. Limiting block; 25. Material supporting part; 26. Positioning placement groove; 27. Limiting part; 28. Clamping seat; 29. Cover plate; 30. Supporting piece part; 31. Second positioning clip; 32. First positioning part; 33. First end face abutting part; 34. First side surface abutting part; 35. First driving ring; 36. Handle; 37. First driving groove; 38. First transmission pin; 39. Carrying handle; 40. First avoiding groove; 41. Second avoiding groove; 42. Base; 43. Slide block; 44. Pressing seat; 45. Pressing rod; 46. Spring; 47. Locking component; 48. Opening groove; 49. Ring groove; 50. Convex platform part; 51. Clamping seat; 52. Outer chuck; 53. Inner chuck; 54. First sliding fit groove; 55. Clamping hole; 56. Second driving ring; 57. Second driving groove; 58. Third driving groove; 59. Second transmission pin; 60. Third transmission pin; 61. Second sliding fit groove; 62. Limiting plate; 63. Driving block; 64. Fourth transmission pin; 65. Driving screw; 66. Fourth driving groove; 67. First through hole; 68. Second positioning part; 69. Second end face abutting part; 70. Second side surface abutting part; 71. Third positioning clip. Detailed implementation manners

[0016] In order to make the content of the present invention easier to be clearly understood, the present invention will be further described in detail below according to specific embodiments in combination with the drawings.

[0017] As Figures 1 - 13 shown, a combined tooling for welding a stator assembly includes a base 1, a fixing mechanism 2, a wire installation mechanism 3, a wreath clamping mechanism 4, a terminal installation mechanism 5 and a clamping mechanism 6; The fixing mechanism 2 is connected to the base 1, and the fixing mechanism 2 is used for positioning and installing the stator assembly 7; The wire installation mechanism 3 is connected to the base 1, and the wire installation mechanism 3 is used for positioning and placing the star point wire 8 and aligning and contacting the wire foot 9 in the star point wire 8 with the corresponding wire head 10 in the stator assembly 7 to form a welding part to be welded 11; The wreath clamping mechanism 4 is used for clamping and fixing the wreath copper wire 12 and assembling it on the stator assembly 7 so that the wire foot 9 in the wreath copper wire 12 is aligned and contacted with the corresponding wire head 10 in the stator assembly 7 to form a welding part to be welded 11; The terminal mounting mechanism 5 is connected to the wreath clamping mechanism 4. In the terminal mounting mechanism 5, three-phase terminals 13 are mounted, and the pins 9 on the three-phase terminals 13 are aligned and contacted with the corresponding wire ends 10 in the stator assembly 7 to form a welding portion 11 to be welded. The clamping mechanism 6 is used to be positioned and mounted on the stator assembly 7 and to clamp the wire ends 10 and the pins 9 in the welding portion 11 to be welded together.

[0018] Specifically, pins 9 are provided in the star point wire 8, the wreath copper wire 12, and the three-phase terminals 13. Multiple wire ends 10 are provided in the stator assembly 7. Some of the wire ends 10 are used to be welded to the pins 9 in the star point wire 8, some of the wire ends 10 are used to be welded to the pins 9 in the wreath copper wire 12, and some of the wire ends 10 are used to be welded to the pins 9 in the three-phase terminals 13. Among them, the pins 9 in the star point wire 8, the pins 9 in the wreath copper wire 12, and the pins 9 in the three-phase terminals 13 are respectively used to be aligned and contacted with the corresponding wire ends 10 to form a welding portion 11 to be welded.

[0019] First, the stator assembly 7 is positioned and mounted on the fixing mechanism 2. Then, the star point wire 8 is positioned and placed on the wire mounting mechanism 3. At this time, the pins 9 in the star point wire 8 are aligned and contacted with the corresponding wire ends 10 in the stator assembly 7 to form a welding portion 11 to be welded. Then, the wreath clamping mechanism 4 is used to clamp and fix the wreath copper wire 12 and the wreath clamping mechanism 4 is assembled to the stator assembly 7 so that the pins 9 in the wreath copper wire 12 are aligned and contacted with the corresponding wire ends 10 in the stator assembly 7 to form a welding portion 11 to be welded. Then, the three-phase terminals 13 are mounted in the terminal mounting mechanism 5 and the pins 9 on the three-phase terminals 13 are aligned and contacted with the corresponding wire ends 10 in the stator assembly 7 to form a welding portion 11 to be welded. Then, the clamping mechanism 6 is positioned and mounted on the stator assembly 7 and the wire ends 10 and the pins 9 in each welding portion 11 to be welded are respectively clamped together through the clamping mechanism 6. Thus, the star point wire 8, the wreath copper wire 12, and the three-phase terminals 13 are all fixedly clamped on the stator assembly 7. Then, the stator assembly 7 with the star point wire 8, the wreath copper wire 12, and the three-phase terminals 13 clamped thereon is sent into a welding device to weld each welding portion 11 to be welded, and thus the star point wire 8, the wreath copper wire 12, and the three-phase terminals 13 are all welded on the stator assembly 7. Specifically, three three-phase terminals 13 are provided. The wreath copper wire 12 is formed by splicing and combining a plurality of jumper wires. The specific structures of the star point wire 8, the wreath copper wire 12, and the three-phase terminals 13 are all prior arts well-known to those skilled in the art.

[0020] Specifically, the stator assembly 7 includes a stator core 14 and a stator winding 15 connected to the stator core 14. The lead end 10 is provided on the stator winding 15. A first card slot 16 and a second card slot 17 are provided on the inner side wall of the stator core 14.

[0021] As Figures 2 - 4 shown, the fixing mechanism 2 may include a first positioning clip 18 and a plurality of fixing blocks 19 connected to the base 1 and arranged in sequence along the circumference; The fixing block 19 has a supporting surface 20 for supporting the lower end surface of the stator core 14 in the stator assembly 7; The fixing block 19 further has a positioning side surface 21 for cooperating with and abutting against the inner side wall of the stator core 14; The first positioning clip 18 is connected to the fixing block 19 and is used for being clamped in the first card slot 16 on the inner side wall of the stator core 14 to define the circumferential position of the stator core 14. Specifically, when positioning and installing the stator assembly 7 on the fixing mechanism 2, first install the stator assembly 7 on the fixing block 19, so that the supporting surface 20 supports the lower end surface of the inner circumferential portion of the stator core 14, the positioning side surface 21 cooperates with and abuts against the inner side wall of the stator core 14, and the first positioning clip 18 is inserted into the first card slot 16, thereby being able to completely position the stator core 14 and position and install the stator core 14 and even the entire stator assembly 7 on the fixing block 19; in this embodiment, 3 fixing blocks 19 are evenly distributed along the circumference.

[0022] As Figures 2 - 4 shown, the wire installation mechanism 3 may include a mounting base 22, at least one supporting block 23, and at least one limiting block 24; The mounting base 22 is connected to the base 1; The supporting block 23 has a material supporting portion 25. The supporting block 23 is slidably connected to the mounting base 22 and is used for sliding to make the material supporting portion 25 extend above the stator assembly 7 on the fixing mechanism 2, and the supporting block 23 is further used for sliding to make the material supporting portion 25 withdraw from above the stator assembly 7; A positioning placement groove 26 for positioning and placing the star point wire 8 is provided on the material supporting portion 25; The limiting block 24 is provided with a limiting portion 27. The limiting block 24 is slidably connected to the mounting seat 22 and is used to slide to make the limiting portion 27 extend above the star point line 8 in the positioning placement groove 26 to limit the star point line 8 in the positioning placement groove 26. The limiting block 24 is also used to slide to make the limiting portion 27 withdraw from above the star point line 8. Specifically, after the stator assembly 7 is positioned and installed on the fixing block 19 in the fixing mechanism 2, slide the supporting block 23 to make the material supporting portion 25 extend above the stator assembly 7, and then place the star point line 8 in the positioning placement groove 26. At this time, the material supporting portion 25 can support the star point line 8 and the positioning placement groove 26 can position the star point line 8 so that the pins 9 in the star point line 8 are aligned and contacted with the corresponding wire heads 10 in the stator assembly 7 to form a welding portion to be welded 11. Then slide the limiting block 24 to make the limiting portion 27 extend above the star point line 8 and further limit the star point line 8 in the positioning placement groove 26, as Figure 4 shown. In this embodiment, there are two supporting blocks 23. The limiting block 24 is located between the two supporting blocks 23. The supporting block 23 and the limiting block 24 are respectively slidably connected to the mounting seat 22 along the radial direction of the stator assembly 7. When the supporting block 23 slides radially outward to the in-place position, the material supporting portion 25 extends above the stator assembly 7. When the supporting block 23 slides radially inward to the in-place position, the material supporting portion 25 withdraws from above the stator assembly 7. When the limiting block 24 slides radially outward to the in-place position, the limiting portion 27 extends above the star point line 8 in the positioning placement groove 26. When the limiting block 24 slides radially inward to the in-place position, the limiting portion 27 withdraws from above the star point line 8. Further, limiting pins are respectively connected to the supporting block 23 and the limiting block 24, and limiting grooves corresponding to the limiting pins are provided on the mounting seat 22. The limiting pins are fitted in the corresponding limiting grooves to limit the sliding strokes of the supporting block 23 and the limiting block 24.

[0023] As Figure 1 , 2 , 5, 6, 7 show that the flower ring clamping mechanism 4 may include a clamping seat 28, a first driving mechanism and a plurality of cover plates 29; A plurality of support piece portions 30 arranged at intervals in the circumferential direction are provided on the outer peripheral portion of the clamping seat 28. The support piece portions 30 protrude radially outward and are used to abut against one end of the flower ring copper wire 12; The cover plates 29 are arranged in sequence along the circumferential direction of the clamping seat 28 and are slidably connected to the clamping seat 28 along the radial direction of the clamping seat 28; The first driving mechanism is connected to the clamping seat 28 and is connected to the cover plate 29. The first driving mechanism is used to drive the cover plate 29 to move radially outward so that the cover plate 29 extends outward to abut against the other end of the annular copper wire 12, thereby clamping and limiting the annular copper wire 12 between the supporting piece portion 30 and the cover plate 29. The first driving mechanism is further used to drive the cover plate 29 to move radially inward so that the cover plate 29 retracts inward to release the abutment against the annular copper wire 12, thereby releasing the clamping and limiting of the annular copper wire 12; The clamping seat 28 is used for positioning and assembling on the upper end portion of the stator core 14 in the stator assembly 7 so that the wire legs 9 in the annular copper wire 12 clamped and limited between the supporting piece portion 30 and the cover plate 29 are aligned and contacted with the corresponding wire heads 10 in the stator assembly 7 to form the portion to be welded 11.

[0024] As Figure 5 、 6 As shown in FIGS. 8, a positioning structure for positioning and assembling with the inner peripheral portion of the upper end portion of the stator core 14 is provided on the clamping seat 28. The positioning structure includes a second positioning clip 31 and a plurality of first positioning portions 32; The first positioning portions 32 are provided on the clamping seat 28 and are arranged at intervals in the circumferential direction in sequence; The first positioning portion 32 is provided with a first end face abutting portion 33 for abutting against the upper end face of the inner peripheral portion of the stator core 14 and a first side face abutting portion 34 for cooperating with and abutting against the inner side wall of the stator core 14; The second positioning clip 31 is connected to the first positioning portion 32 and is used for being clamped in the second card slot 17 on the inner side wall of the stator core 14 to limit the circumferential position of the clamping seat 28; specifically, by making the first end face abutting portion 33 abut against the upper end face of the inner peripheral portion of the stator core 14 and making the first side face abutting portion 34 cooperate with and abut against the inner side wall of the stator core 14, the clamping seat 28 can be positioned and assembled on the upper end portion of the stator core 14, and then by making the second positioning clip 31 be clamped into the second card slot 17, the circumferential position of the clamping seat 28 relative to the stator core 14 can be limited.

[0025] As Figure 5 、 6 As shown in FIGS. 9, the first driving mechanism may include a first driving ring 35 and a handle 36; The first driving ring 35 is rotatably connected in the clamping seat 28, and a plurality of first driving grooves 37 are provided on the first driving ring 35; A first transmission pin 38 is connected to the cover plate 29, and the first transmission pin 38 is fitted in the corresponding first driving groove 37; The handle 36 is connected to the first driving ring 35 and is used to drive the first driving ring 35 to rotate, thereby driving the cover plate 29 to move radially; specifically, when the first driving ring 35 rotates, it can drive the cover plate 29 to move radially through the cooperation of the first driving groove 37 and the first transmission pin 38. In this embodiment, a carrying handle 39 is further connected to the clamping seat 28, a first avoidance groove 40 for avoiding the wire installation mechanism 3 is provided on the clamping seat 28, a second avoidance groove 41 for avoiding the wire installation mechanism 3 is provided on the first driving ring 35, and the first driving grooves 37 and the first transmission pins 38 are in one-to-one correspondence.

[0026] Specifically, the flower-ring copper wire 12 is formed by splicing and combining a plurality of jumper wires. After the star point wire 8 is placed in the positioning placement groove 26 and the limiting portion 27 confines the star point wire 8 in the positioning placement groove 26. Place the bottom surface of the clamping seat 28 facing upwards, as Figure 5 shown. At this time, the supporting piece portion 30 is located below. Place the jumper wires on the supporting piece portion 30 in sequence so that a plurality of jumper wires are spliced and combined into the flower-ring copper wire 12 on the supporting piece portion 30. Then, drive the cover plate 29 to move radially outwards through the first driving mechanism to extend above the flower-ring copper wire 12. At this time, the supporting piece portion 30 is located below the flower-ring copper wire 12 and the cover plate 29 is located above the flower-ring copper wire 12. That is to say, the supporting piece portion 30 abuts against one end of the flower-ring copper wire 12 and the cover plate 29 abuts against the other end of the flower-ring copper wire 12, thereby clamping and confining the flower-ring copper wire 12 between the supporting piece portion 30 and the cover plate 29. Then turn the clamping seat 28 over so that the bottom surface of the clamping seat 28 faces downwards and position and assemble the clamping seat 28 on the upper end portion of the stator core 14, as Figure 7 shown. At this time, the first end face abutting portion 33 abuts against the upper end face of the inner peripheral portion of the stator core 14, the first side face abutting portion 34 cooperates with and abuts against the inner side wall of the stator core 14, and the second positioning clip 31 is clamped into the second card slot 17, thereby completely positioning and assembling the clamping seat 28 on the upper end portion of the stator core 14. At this time, the wire leads 9 in the flower-ring copper wire 12 will be aligned and in contact with the corresponding wire heads 10 in the stator assembly 7 to form the portion to be welded 11.

[0027] As Figures 5 - 9 shown, the terminal installation mechanism 5 may include a base 42 and an installation component corresponding to the three-phase terminals 13; The installation component may include a slider 43, a pressing seat 44, a pressing rod 45, a spring 46 and a locking component 47; The slider 43 is provided with an opening groove 48 for installing the three-phase terminal 13. A ring groove 49 is provided on the side wall of the three-phase terminal 13, and a boss portion 50 for being snapped into the ring groove 49 to support the three-phase terminal 13 is provided on the side wall of the opening groove 48; The pressing seat 44 is connected to the slider 43; The pressing rod 45 is slidably connected in the pressing seat 44 in the up and down direction and is used to abut against the three-phase terminal 13 installed in the opening groove 48; The spring 46 abuts against the pressing seat 44 and the pressing rod 45 respectively and is used to drive the pressing rod 45 to tightly press the three-phase terminal 13 in the opening groove 48 so as to tightly fix the three-phase terminal 13 in the opening groove 48; The base 42 is connected to the clamping seat 28; The slider 43 is slidably connected to the base 42 along the radial direction of the clamping seat 28. The slider 43 is used to slide radially outward in place and then drive the three-phase terminal 13 in the opening groove 48 to be assembled in place so that the wire pins 9 in the three-phase terminal 13 are aligned and in contact with the corresponding wire heads 10 in the stator assembly 7 to form the part to be welded 11. The slider 43 is also used to slide radially inward in place so that the three-phase terminal 13 welded on the stator assembly 7 exits from the opening groove 48; The locking member 47 is used to lock and fix the slider 43 on the base 42 when the slider 43 slides radially outward in place. In this embodiment, there are three three-phase terminals 13, and there are also three mounting assemblies, which correspond to the three-phase terminals 13 one by one. Specifically, after the clamping seat 28 is positioned and assembled on the upper end of the stator core 14, the pressing rod 45 is pulled up, the three-phase terminal 13 is installed in the opening groove 48, and the slider 43 is slid radially outward in place, and then the pressing rod 45 is released. At this time, the boss portion 50 in the opening groove 48 is snapped into the ring groove 49 in the three-phase terminal 13 to support the three-phase terminal 13. The spring 46 drives the pressing rod 45 to tightly press the three-phase terminal 13 in the opening groove 48 and tightly fixes the three-phase terminal 13 in the opening groove 48. The wire pins 9 in the three-phase terminal 13 will be aligned and in contact with the corresponding wire heads 10 in the stator assembly 7 to form the part to be welded 11, and then the slider 43 is locked and fixed on the base 42 at the current position through the locking member 47. Among them, the locking member 47 can be a locking bolt. When the slider 43 slides radially outward in place, the locking bolt passes through the slider 43 and is threadedly connected to the base 42 to lock and fix the slider 43 on the base 42.

[0028] As Figure 1 、 2, as shown in FIGS. 10 to 13, the clamping mechanism 6 may include a clamping seat 51, a second driving mechanism, a plurality of outer chucks 52 and a plurality of inner chucks 53; The outer chucks 52 are arranged in sequence along the circumferential direction of the clamping seat 51 and are slidably connected to the clamping seat 51 along the radial direction of the clamping seat 51. A first sliding groove 54 is provided in the outer chuck 52; The inner chucks 53 correspond to the outer chucks 52 one by one and are slidably arranged in the first sliding groove 54 in the corresponding outer chuck 52 along the radial direction of the clamping seat 51. A clamping hole 55 for the part to be welded 11 to extend into is provided between the inner chuck 53 and the outer chuck 52; The clamping seat 51 is used for positioning and installing on the upper end of the stator core 14 in the stator assembly 7 so that the part to be welded 11 extends into the corresponding clamping hole 55; The second driving mechanism is connected to the clamping seat 51. The second driving mechanism is respectively connected to the inner chuck 53 and the outer chuck 52 and is used for driving the inner chuck 53 and the outer chuck 52 to move in the radial direction in opposite directions to clamp and release the wire ends 10 and wire pins 9 in the part to be welded 11; in this embodiment, the clamping holes 55 correspond to the parts to be welded 11 one by one.

[0029] As Figures 10 - 13 shown, the second driving mechanism may include a second driving ring 56 and an actuating mechanism; The second driving ring 56 is rotatably connected in the clamping seat 51. A plurality of second driving grooves 57 arranged in sequence along the circumferential direction and a plurality of third driving grooves 58 arranged in sequence along the circumferential direction are provided on the second driving ring 56; A second transmission pin 59 is connected to the outer chuck 52, and the second transmission pin 59 is fitted in the corresponding second driving groove 57. A third transmission pin 60 is connected to the inner chuck 53, and the third transmission pin 60 is fitted in the corresponding third driving groove 58; The action mechanism is connected to the clamping seat 51. The action mechanism is connected to the second driving ring 56 and is used to drive the second driving ring 56 to rotate, and then drive the second transmission pin 59 and the third transmission pin 60 to move radially in opposite directions through the second driving groove 57 and the third driving groove 58, so as to drive the inner chuck 53 and the outer chuck 52 to move radially in opposite directions, so as to clamp or loosen the wire head 10 and the pin 9 in the welding part 11 to be welded. Wherein, the inclination directions of the second driving groove 57 and the third driving groove 58 are opposite, the second driving groove 57 corresponds to the second transmission pin 59 one by one, and the third driving groove 58 corresponds to the third transmission pin 60 one by one. In this embodiment, a second sliding groove 61 corresponding to the outer chuck 52 is provided on the clamping seat 51, the outer chuck 52 is slidably matched in the corresponding second sliding groove 61 in the radial direction, the second driving ring 56 is rotatably arranged above the outer chuck 52 and the inner chuck 53 and restricts the outer chuck 52 and the inner chuck 53 in the corresponding second sliding groove 61, and a plurality of limiting plates 62 are connected to the clamping seat 51, and the limiting plates 62 abut against the upper surface of the second driving ring 56 to limit the second driving ring 56 in the clamping seat 51.

[0030] As Figures 10 - 13 shown, the action mechanism may include a driving block 63, a fourth transmission pin 64 and a driving screw 65; The driving block 63 is slidably connected to the clamping seat 51; The fourth transmission pin 64 is connected to the driving block 63, and a fourth driving groove 66 is provided on the second driving ring 56 for cooperating with the fourth transmission pin 64; One end of the driving screw 65 is rotatably connected to the driving block 63, and the driving screw 65 is threadedly connected to the clamping seat 51 so that when the driving screw 65 is rotated, the driving block 63 is driven to move, and then the second driving ring 56 is driven to rotate through the cooperation of the fourth transmission pin 64 and the fourth driving groove 66; In this embodiment, the driving block 63 is slidably connected to the clamping seat 51 in the radial direction of the clamping seat 51; Specifically, a hexagonal part is provided on the driving screw 65 so as to rotate the hexagonal part by a wrench and then rotate the driving screw 65.

[0031] A third clamping groove is provided on the outer side wall of the stator core 14.

[0032] As Figure 10 、 11 shown, a first through hole 67 is provided inside the clamping seat 51, and a second through hole is provided inside the second driving ring 56; The clamping seat 51 is provided with a second positioning portion 68 for positioning and assembling with the outer peripheral portion of the upper end portion of the stator core 14, and the second positioning portion 68 is of an annular structure; The second positioning portion 68 is provided with a second end face abutting portion 69 for abutting against the upper end face of the outer peripheral portion of the stator core 14 and a second side face abutting portion 70 for cooperating with and abutting against the outer side wall of the stator core 14, and both the second end face abutting portion 69 and the second side face abutting portion 70 are of an annular structure; A third positioning clip 71 is connected to the second positioning portion 68, and the third positioning clip 71 is used for being clamped in a third card slot on the outer side wall of the stator core 14 to define the circumferential position of the clamping seat 51. Specifically, after the three-phase terminals 13 are installed in place, the slider 43 needs to be locked and fixed on the base 42 by a locking member 47, and then the clamping seat 51 is positioned and installed on the upper end portion of the stator core 14 so that each of the parts to be welded 11 extends into the corresponding clamping hole 55 respectively. When the clamping seat 51 is positioned and installed on the upper end portion of the stator core 14, the second end face abutting portion 69 will abut against the upper end face of the inner peripheral portion of the stator core 14, the second side face abutting portion 70 will cooperate with and abut against the outer side wall of the stator core 14, and the third positioning clip 71 will be clamped into the third card slot on the outer side wall of the stator core 14, thereby positioning and assembling the clamping seat 51 on the upper end portion of the stator core 14. Then, the inner chuck 53 and the outer chuck 52 are driven by the second driving mechanism to move in the radial direction in opposite directions to clamp the wire heads 10 and the wire feet 9 in the parts to be welded 11 in the clamping holes 55, and then a welding device can be used to perform welding processing on all the parts to be welded 11.

[0033] More specifically, after welding, the star point line 8, the wreath copper wire 12, and the three-phase terminal 13 are all welded to the stator assembly 7. At this time, the combined tooling needs to be disassembled. The specific disassembly steps are as follows: First, drive the inner chuck 53 and the outer chuck 52 to move radially in opposite directions through the second driving mechanism to loosen the part to be welded 11, and then lift the clamping seat 51 upward to remove the entire clamping mechanism 6. Then loosen the locking member 47 and pull up the pressure rod 45, and then slide the slider 43 radially inward to the in-place position so that the three-phase terminal 13 welded to the stator assembly 7 exits from the opening groove 48. After the three-phase terminal 13 exits from the opening groove 48, the boss portion 50 also exits from the annular groove 49 on the three-phase terminal 13, thereby releasing the support for the three-phase terminal 13. And drive the cover plate 29 to move radially inward through the first driving mechanism so that the cover plate 29 retracts inward and releases the abutment with the wreath copper wire 12, thereby releasing the clamping limitation on the wreath copper wire 12. Then lift the clamping seat 28 upward to disassemble and remove the entire wreath clamping mechanism 4 and the terminal mounting mechanism 5. Then slide the limit block 24 radially inward so that the limiting portion 27 exits from above the star point line 8, slide the support block 23 radially inward so that the material supporting portion 25 exits from above the stator assembly 7, and then the stator assembly 7 can be lifted upward to remove the stator assembly 7 from the fixing mechanism 2.

[0034] In summary, the pin 9 is provided in each of the star point line 8, the flower ring copper wire 12, and the three-phase terminal 13. Multiple wire ends 10 are provided in the stator assembly 7. Some of the wire ends 10 are used for welding with the pin 9 in the star point line 8, some of the wire ends 10 are used for welding with the pin 9 in the flower ring copper wire 12, and some of the wire ends 10 are used for welding with the pin 9 in the three-phase terminal 13. Among them, the pin 9 in the star point line 8, the pin 9 in the flower ring copper wire 12, and the pin 9 in the three-phase terminal 13 are respectively used to form a to-be-welded part 11 after being aligned and contacting with the corresponding wire ends 10. First, the stator assembly 7 is positioned and installed on the fixing mechanism 2, and then the star point line 8 is positioned and placed on the wire installation mechanism 3. At this time, the pin 9 in the star point line 8 will be aligned and contact with the corresponding wire end 10 in the stator assembly 7 to form a to-be-welded part 11. Then, the flower ring clamping mechanism 4 is used to clamp and fix the flower ring copper wire 12 and the flower ring clamping mechanism 4 is assembled onto the stator assembly 7 so that the pin 9 in the flower ring copper wire 12 is aligned and contacts with the corresponding wire end 10 in the stator assembly 7 to form a to-be-welded part 11. Then, the three-phase terminal 13 is installed in the terminal installation mechanism 5 and the pin 9 on the three-phase terminal 13 is aligned and contacts with the corresponding wire end 10 in the stator assembly 7 to form a to-be-welded part 11. Then, the clamping mechanism 6 is positioned and installed on the stator assembly 7 and the wire end 10 and the pin 9 in each to-be-welded part 11 are respectively clamped together through the clamping mechanism 6, thereby realizing the fixation and clamping of the star point line 8, the flower ring copper wire 12, and the three-phase terminal 13 on the stator assembly 7. Then, the stator assembly 7 clamped with the star point line 8, the flower ring copper wire 12, and the three-phase terminal 13 is sent into a welding device to weld each to-be-welded part 11, and further weld the star point line 8, the flower ring copper wire 12, and the three-phase terminal 13 on the stator assembly 7.

[0035] In the specific embodiments described above, the technical problems solved, the technical solutions, and the beneficial effects of the present invention are further described in detail. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A combined tool for welding a stator assembly, characterized in that: It comprises a base (1), a fixing mechanism (2), a wire mounting mechanism (3), a wreath clamping mechanism (4), a terminal mounting mechanism (5) and a clamping mechanism (6); The fixing mechanism (2) is connected to the base (1), and the fixing mechanism (2) is used to position and install the stator assembly (7); The wire installation mechanism (3) is connected to the base (1), and the wire installation mechanism (3) is used to position and place the star point line (8) and align the wire feet (9) in the star point line (8) with the corresponding wire heads (10) in the stator assembly (7) to form a portion to be welded (11); The rosette clamping mechanism (4) is used to clamp and fix the rosette copper wire (12) and to assemble it on the stator assembly (7) so that the wire feet (9) in the rosette copper wire (12) and the corresponding wire heads (10) in the stator assembly (7) are aligned and contacted to form a portion to be welded (11); The terminal installation mechanism (5) is connected to the rosette clamping mechanism (4), and is used to install a three-phase terminal (13) in the terminal installation mechanism (5) and align and contact the wire pins (9) on the three-phase terminal (13) with the corresponding wire heads (10) in the stator assembly (7) to form a portion to be welded (11); The clamping mechanism (6) is used for positioning and mounting on the stator assembly (7) and for clamping the wire head (10) and the wire foot (9) in the portion to be welded (11) together.

2. The combined tooling for stator assembly welding according to claim 1, characterized in that: The fixing mechanism (2) comprises a first positioning clip (18) and a plurality of fixing blocks (19) connected to the base (1) and arranged in sequence along the circumferential direction; The fixing block (19) has a supporting surface (20) for supporting the lower end surface of the stator core (14) in the stator assembly (7); The fixing block (19) also has a positioning side surface (21) for cooperating and abutting against the inner side wall of the stator core (14); The first positioning clip (18) is connected to the fixing block (19) and is used to be clamped in a first clamping groove (16) on the inner side wall of the stator core (14) to define the circumferential position of the stator core (14).

3. The combined tooling for stator assembly welding according to claim 1, characterized in that: The wire installation mechanism (3) comprises a mounting seat (22), at least one supporting block (23) and at least one limiting block (24); The mounting seat (22) is connected to the base (1); The support block (23) has a support portion (25), the support block (23) is slidably connected to the mounting seat (22) and is used to slide until the support portion (25) extends above the stator assembly (7) on the fixing mechanism (2), and the support block (23) is also used to slide until the support portion (25) withdraws from above the stator assembly (7); The support portion (25) is provided with a positioning groove (26) for positioning and placing the star point line (8); The limit block (24) has a limit portion (27). The limit block (24) is slidably connected to the mounting seat (22) and is used to slide until the limit portion (27) extends above the star point line (8) in the positioning placement groove (26) to confine the star point line (8) in the positioning placement groove (26). The limit block (24) is also used to slide until the limit portion (27) withdraws from above the star point line (8).

4. The combined tooling for stator assembly welding according to claim 1, characterized in that: The wreath clamping mechanism (4) comprises a clamping seat (28), a first driving mechanism and a plurality of cover plates (29); A plurality of support pieces (30) are arranged in a circumferential direction and spaced in sequence on the outer periphery of the clamping seat (28); the support pieces (30) protrude radially outward and are used to abut against one end of the rosette copper wire (12); The cover plates (29) are arranged in sequence along the circumferential direction of the clamping seat (28) and are slidably connected to the clamping seat (28) along the radial direction of the clamping seat (28); The first driving mechanism is connected to the clamping seat (28) and is connected to the cover plate (29). The first driving mechanism is used to drive the cover plate (29) to move radially outward so that the cover plate (29) extends outward to abut against the other end of the garland copper wire (12), thereby clamping the garland copper wire (12) between the support plate (30) and the cover plate (29). The first driving mechanism is also used to drive the cover plate (29) to move radially inward so that the cover plate (29) retracts inward to release the abutment with the garland copper wire (12), thereby releasing the clamping of the garland copper wire (12); The clamping seat (28) is used to position and assemble on the upper end of the stator core (14) in the stator assembly (7) so that the wire feet (9) in the garland copper wire (12) clamped and defined between the support plate (30) and the cover plate (29) are aligned and contacted with the corresponding wire heads (10) in the stator assembly (7) to form the portion to be welded (11).

5. The combined tooling for stator assembly welding according to claim 4, characterized in that: The clamping seat (28) is provided with a positioning structure for positioning and assembling with the inner circumference of the upper end of the stator core (14), the positioning structure comprising a second positioning clip (31) and a plurality of first positioning portions (32); The first positioning portions (32) are arranged on the clamping seat (28) and are arranged in sequence and spaced apart in the circumferential direction; The first positioning portion (32) is provided with a first end surface abutting portion (33) for abutting against the upper end surface of the inner circumference of the stator core (14) and a first side surface abutting portion (34) for cooperating with the inner side wall of the stator core (14); The second positioning clip (31) is connected to the first positioning portion (32) and is used to be clamped in a second clamping groove (17) on the inner side wall of the stator core (14) to define the circumferential position of the clamping seat (28); The first driving mechanism comprises a first driving ring (35) and a handle (36); The first drive ring (35) is rotatably connected to the clamping seat (28), and the first drive ring (35) is provided with a plurality of first drive grooves (37); The cover plate (29) is connected to a first transmission pin (38), and the first transmission pin (38) is engaged in the corresponding first driving groove (37); The handle (36) is connected to the first drive ring (35) and is used to drive the first drive ring (35) to rotate and thereby drive the cover plate (29) to move radially.

6. The combined tooling for stator assembly welding according to claim 4, characterized in that: The terminal installation mechanism (5) comprises a base (42) and an installation component corresponding to the three-phase terminal (13); The mounting assembly comprises a slider (43), a pressing seat (44), a pressing rod (45), a spring (46) and a locking component (47); The slider (43) is provided with an opening groove (48) for mounting the three-phase terminal (13), a side wall of the three-phase terminal (13) is provided with an annular groove (49), and a side wall of the opening groove (48) is provided with a boss portion (50) for snapping into the annular groove (49) to support the three-phase terminal (13); The pressing seat (44) is connected to the sliding block (43); The pressing rod (45) is slidably connected in the pressing seat (44) along the up-down direction and is used to resist the three-phase terminal (13) installed in the opening groove (48); The spring (46) is respectively pressed against the pressing seat (44) and the pressing rod (45) and is used to drive the pressing rod (45) to press against the three-phase terminal (13) in the opening slot (48) so as to press and fix the three-phase terminal (13) in the opening slot (48); The base (42) is connected to the clamping seat (28); The slider (43) is connected to the base (42) by sliding along the radial direction of the clamping seat (28); the slider (43) is used to slide radially outward to a position so as to drive the three-phase terminal (13) in the open slot (48) to be assembled into a position so that the wire feet (9) in the three-phase terminal (13) are aligned and contacted with the corresponding wire heads (10) in the stator assembly (7) to form the welded portion (11); the slider (43) is also used to slide radially inward to a position so that the three-phase terminal (13) welded on the stator assembly (7) is withdrawn from the open slot (48); The locking component (47) is used to lock and fix the slider (43) on the base (42) when the slider (43) slides radially outwards into position.

7. The combined tooling for stator assembly welding according to claim 1, characterized in that: The clamping mechanism (6) comprises a clamping seat (51), a second driving mechanism, a plurality of outer clamps (52) and a plurality of inner clamps (53); The outer clamps (52) are arranged in sequence along the circumferential direction of the clamping seat (51) and are slidably connected to the clamping seat (51) along the radial direction of the clamping seat (51), and a first sliding groove (54) is provided in the outer clamps (52); The inner chuck (53) corresponds to the outer chuck (52) one by one and is slidably arranged in a first sliding groove (54) in the corresponding outer chuck (52) along the radial direction of the clamping seat (51); a clamping hole (55) is provided between the inner chuck (53) and the outer chuck (52) for the portion to be welded (11) to extend into; The clamping seat (51) is used to be positioned and mounted on the upper end of the stator core (14) in the stator assembly (7) so that the portion to be welded (11) extends into the corresponding clamping hole (55); The second driving mechanism is connected to the clamping seat (51), and is respectively connected to the inner clamp (53) and the outer clamp (52) and is used to drive the inner clamp (53) and the outer clamp (52) to move in opposite directions in the radial direction so as to clamp and release the wire head (10) and the wire foot (9) in the portion to be welded (11).

8. The combined tooling for stator assembly welding according to claim 7, characterized in that: The second driving mechanism comprises a second driving ring (56) and an action mechanism; The second drive ring (56) is rotatably connected to the clamping seat (51), and the second drive ring (56) is provided with a plurality of second drive grooves (57) arranged in sequence along the circumferential direction and a plurality of third drive grooves (58) arranged in sequence along the circumferential direction; The outer chuck (52) is connected to a second transmission pin (59), the second transmission pin (59) is engaged in the corresponding second driving groove (57), and the inner chuck (53) is connected to a third transmission pin (60), the third transmission pin (60) is engaged in the corresponding third driving groove (58); The actuating mechanism is connected to the clamping seat (51), and is connected to the second driving ring (56) and is used to drive the second driving ring (56) to rotate, thereby driving the second transmission pin (59) and the third transmission pin (60) to move in the radial opposite direction through the second driving groove (57) and the third driving groove (58), thereby driving the inner chuck (53) and the outer chuck (52) to move in the radial opposite direction.

9. The combined tooling for stator assembly welding according to claim 8, characterized in that: The action mechanism comprises a driving block (63), a fourth driving pin (64) and a driving screw rod (65); The driving block (63) is slidably connected to the clamping seat (51); The fourth transmission pin (64) is connected to the driving block (63), and the second driving ring (56) is provided with a fourth driving groove (66) that cooperates with the fourth transmission pin (64); One end of the driving screw (65) is rotatably connected to the driving block (63), and the driving screw (65) is threadedly connected to the clamping seat (51) so that when the driving screw (65) is rotated, the driving block (63) is driven to move, and then the second driving ring (56) is driven to rotate through the cooperation of the fourth transmission pin (64) and the fourth driving groove (66).

10. The combined tooling for stator assembly welding according to claim 7, characterized in that: A first through hole (67) is provided on the inner side of the clamping seat (51); The clamping seat (51) is provided with a second positioning portion (68) for positioning and assembling with the outer periphery of the upper end portion of the stator core (14); The second positioning portion (68) is provided with a second end surface abutting portion (69) for abutting against the upper end surface of the outer peripheral portion of the stator core (14) and a second side surface abutting portion (70) for cooperating with the outer side wall of the stator core (14); A third positioning clip (71) is connected to the second positioning portion (68), and the third positioning clip (71) is used to be clamped in a third clamping groove on the outer side wall of the stator core (14) to define the circumferential position of the clamping seat (51).

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