Tool for welding busbar and star point copper bar

Abstract

The invention discloses a tool for welding a busbar and a star point copper bar. The tool comprises a base, a supporting plate, a first pressing mechanism, a second pressing mechanism, a driving mechanism, a first wire pressing part and a second wire pressing part. The base is internally provided with a mounting groove which is used for allowing a busbar and a star point copper bar to enter and allowing the busbar and the star point copper bar to penetrate through, the base is used for being assembled on a stator assembly in a positioning mode so that a first wire end and a second wire end in the stator assembly can stretch into the mounting groove from bottom to top, and the supporting plate is connected to the base in a sliding mode. And the supporting plate is used for sliding to extend into the mounting groove so as to support the busbar placed in the mounting groove and sliding to retreat from the mounting groove. According to the tool clamp, the busbar and the star point copper bar can be clamped and fixed to the stator assembly at the same time, welding of the busbar and the star point copper bar can be completed through one-time clamping, the welding machining efficiency can be improved, and the design and manufacturing cost of the tool clamp can be saved.

Description

Technical Field

[0001] The invention relates to a tool for welding a busbar and a star-point copper bar. Background Art

[0002] At present, with the continuous development of motor technology, in the production process of some new motors, it is necessary to weld busbars and star-point copper bars on the stator assembly. Before welding, it is necessary to first use a fixture to clamp and fix the busbars and star-point copper bars on the stator assembly. However, the existing fixtures cannot clamp and fix the busbars and star-point copper bars on the stator assembly at the same time. For example, a busbar welding auxiliary device disclosed in the Chinese patent with announcement number CN119457310A can only clamp the busbar on the stator assembly but cannot clamp the star-point copper bar on the stator assembly. This results in the busbars and star-point copper bars needing to be clamped and welded twice, which not only affects the efficiency of the welding process, but also requires the design of two sets of fixtures, thereby increasing the design and manufacturing costs of the fixtures. 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 tool for welding a busbar and a star-point copper bar, which can simultaneously clamp and fix the busbar and the star-point copper bar on a stator assembly, and can complete the welding of the busbar and the star-point copper bar in one clamping, which can not only improve the efficiency of the welding process, but also save the design and manufacturing costs of the tooling fixture.

[0004] In order to solve the above technical problems, the technical solution of the present invention is: a tool for welding a busbar and a star point copper bar, comprising a base, a support plate, a first clamping mechanism, a second clamping mechanism, a driving mechanism, at least one first wire pressing component and at least one second wire pressing component; The base is provided with a mounting groove for the busbar and the star point copper bar to be inserted into and passed through, and the base is used to be positioned and assembled on the stator assembly so that the first wire end and the second wire end in the stator assembly extend from bottom to top into the mounting groove; The support plate is slidably connected to the base, and is used to slide into the installation slot to support the bus bar placed in the installation slot, and to slide out of the installation slot to release the support for the bus bar; The first wire pressing component and the second wire pressing component are respectively connected to the base in a radially sliding manner, and the second wire pressing component is provided with supporting teeth; The driving mechanism is connected to the base and is respectively connected to the first wire pressing component and the second wire pressing component, the driving mechanism is used to drive the first wire pressing component and the second wire pressing component to move radially inward to a position so that the first wire pressing component abuts against the first wire head extending into the installation groove and presses the first wire head onto the bus bar placed in the installation groove, and the second wire pressing component abuts against the second wire head extending into the installation groove and presses the second wire head onto the star-point copper bus placed in the installation groove, and the supporting teeth support the star-point copper bus placed in the installation groove, and the driving mechanism is also used to drive the first wire pressing component and the second wire pressing component to move radially outward to a position so that the first wire pressing component is disengaged from the first wire head and the second wire pressing component is disengaged from the second wire head, and the supporting teeth are withdrawn from under the star-point copper bus to release the support for the star-point copper bus; The first clamping mechanism is connected to the base and is used to clamp and fix the busbar placed in the installation groove; The second pressing mechanism is connected to the base and is used to press and fix the star-point copper busbar placed in the installation groove.

[0005] Furthermore, the base is provided with a limiting abutting portion for abutting against the inner end of the busbar and the inner end of the star-point copper bar so as to limit the radial position of the busbar and the star-point copper bar.

[0006] Further, the first pressing mechanism includes a first pressing block and a first pressing assembly; The first pressing block is used for being detachably mounted on the base, and the first pressing block is provided with at least one pressing finger for pressing the busbar in the mounting groove; The base is provided with a first positioning hole, the busbar is provided with a positioning groove, and the bottom of the first pressing block is provided with a first positioning pin for inserting in the first positioning hole to define the position of the first pressing block relative to the base, and a second positioning pin for inserting in the positioning groove to define the position of the busbar relative to the first pressing block; The first pressure-applying assembly is connected to the base and is used to press a first pressure block installed on the base so that the pressure fingers on the first pressure block press the busbar in the installation slot.

[0007] Furthermore, a positioning block is connected to the base and is used to abut against one end of the star-point copper bar in the installation slot to limit the circumferential position of the star-point copper bar; The base is connected with a third positioning pin for being inserted into an open slot in the star-point copper bar to define the circumferential position of the star-point copper bar.

[0008] Further, the second pressing mechanism includes a second pressing block and a second pressing assembly; The second pressing block is used to be detachably mounted on the base and press the star point copper busbar in the mounting groove; A second positioning hole is provided on the base, and a fourth positioning pin is provided at the bottom of the second pressing block for being inserted into the second positioning hole to limit the position of the second pressing block relative to the base; The second pressure-applying assembly is connected to the base and is used to press the second pressure block installed on the base so that the second pressure block presses the star-point copper busbar in the installation groove.

[0009] Further, the second pressure-applying assembly includes a fixing seat, a pressure rod and a locking bolt; The fixing seat is connected to the base, and a sliding channel is provided in the fixing seat; The pressing rod is slidably fitted in the sliding fitting channel, and the pressing rod is used to slide to press the upper end surface of the second pressing block and to slide to be separated from the upper end surface of the second pressing block; The pressure rod is provided with a first waist-shaped hole, the fixing seat is provided with a bolt hole, the locking bolt passes through the bolt hole and the first waist-shaped hole and is threadedly connected to the base, thereby locking the fixing seat to the base.

[0010] Further, the driving mechanism includes a driving ring, a handle and a locking pin; The driving ring is rotatably connected to the base, and a plurality of driving grooves are provided on the driving ring; The first wire pressing component and the second wire pressing component are respectively connected with a transmission pin, and the transmission pin is matched in the corresponding driving groove; The handle is connected to the driving ring and is used to drive the driving ring to rotate, and then drive the first wire pressing component and the second wire pressing component to move radially respectively through the cooperation between the driving groove and the transmission pin; The base is provided with a locking hole, and the locking pin is connected to the handle. The locking pin is used to be inserted into the locking hole when the first wire pressing component and the second wire pressing component move radially inward to a position, thereby locking the position of the handle.

[0011] Further, the first wire pressing component includes a first sliding seat, a first pressing head, a first elastic member and a first abutting bolt; The first slide is connected to the base in a radially sliding manner, and a transmission pin provided on the first wire pressing component is connected to the first slide so that the first slide is driven to move radially when the driving ring rotates; The first pressing head is slidably connected to the first sliding seat along the radial direction of the base, and a second waist-shaped hole is provided in the first pressing head, and the second waist-shaped hole cooperates with a transmission pin connected to the first sliding seat; The first abutment bolt is connected to the first sliding seat; The first elastic member is installed in the first slide seat and is located between the first pressure head and the first abutment bolt. The first elastic member abuts against the first pressure head and the first abutment bolt respectively. When the first slide seat is driven to move radially inwardly into position, the first elastic member drives the first pressure head to abut against the first thread head in the installation groove. The second wire pressing component includes a second slide seat, a second pressing head, a second elastic member and a second abutting bolt; The second slide is connected to the base in a radially sliding manner, and a transmission pin provided on the second wire pressing component is connected to the second slide so that the second slide is driven to move radially when the driving ring rotates; The second pressing head is slidably connected to the second sliding seat along the radial direction of the base, a third waist-shaped hole is provided in the second pressing head, the third waist-shaped hole cooperates with a transmission pin connected to the second sliding seat, and the support tooth is connected to the second pressing head; The second abutment bolt is connected to the second sliding seat; The second elastic member is installed in the second slide seat and is located between the second pressure head and the second abutment bolt. The second elastic member abuts against the second pressure head and the second abutment bolt respectively. When the second slide seat is driven to move radially inward into position, the second elastic member drives the second pressure head to abut against the second wire head in the mounting groove and the supporting teeth pass between adjacent second wire heads so as to support the star-point copper busbar placed in the mounting groove.

[0012] Further, the base includes an upper base body, a middle base body and a lower base body, the stator assembly includes a stator core and a stator winding, and the first wire end and the second wire end are arranged in the stator winding; The upper seat body is connected to the upper end of the middle seat body, the mounting groove is provided in the upper seat body, the support plate is slidably connected to the upper seat body, and the first clamping mechanism and the second clamping mechanism are both mounted and connected to the upper seat body; The lower seat body is connected to the lower end of the middle seat body, and the lower seat body is used to be positioned and assembled on the upper end of the stator core. The lower seat body and the middle seat body are respectively provided with a through hole for one end of the stator winding to extend into; The first wire pressing component and the second wire pressing component are respectively connected to the middle seat body in a radially sliding manner, and the driving mechanism is connected to the middle seat body.

[0013] Furthermore, the lower seat body is provided with a plurality of positioning and assembly parts sequentially distributed along the circumferential direction, and the positioning and assembly parts are provided with side positioning surfaces for cooperating and abutting with the outer side wall of the stator core and end positioning surfaces for abutting with the upper end surface of the stator core; The outer side wall of the stator core is also provided with a slot, and the positioning assembly portion is connected with a clip for being engaged in the slot for circumferential positioning.

[0014] After adopting the above technical solution, firstly, the base is positioned and assembled on the stator assembly. After being assembled in place, the first and second wire ends in the stator assembly will extend from bottom to top into the installation slot, and then the support plate is slid to extend into the installation slot, and the first and second wire pressing components are driven by the driving mechanism to move radially inward to position. Then, the busbar and the star point copper bar are inserted into the installation slot, at which time the support plate can support the busbar and the support teeth can support the star point copper bar, and at the same time, the first wire pressing component can press the first wire end in the installation slot onto the busbar, and the second wire pressing component can press the second wire end in the installation slot onto the star point copper bar. Then, the busbar is clamped and fixed by the first clamping mechanism and the star-point copper bar is clamped and fixed by the second clamping mechanism, thereby achieving the simultaneous clamping and fixing of the busbar and the star-point copper bar on the stator assembly. Then, the busbar can be welded to the first wire end in the stator assembly and the star-point copper bar can be welded to the second wire end in the stator assembly by welding equipment, thereby achieving the welding of the busbar and the star-point copper bar in one clamping, greatly improving the efficiency of the welding process, and only needing to use one set of tooling, which greatly saves the design and manufacturing cost of the tooling fixture. More specifically, after welding is completed, the first clamping mechanism releases the busbar, the second clamping mechanism releases the star-point copper bar, the support plate is slid to exit the mounting slot to release the support for the busbar, and the first and second wire-pressing components are driven by the driving mechanism to move radially outward to positions, so that the first wire-pressing component is disengaged from the first wire head, and the second wire-pressing component is disengaged from the second wire head, and the support teeth are withdrawn from under the star-point copper bar to release the support for the star-point copper bar. Then the base is lifted upward, and in the process of lifting the base, the busbar and the star-point copper bar will pass through the mounting slot, so that the base can be removed from the stator assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the tooling for welding busbars and star-point copper bars of the present invention assembled on a stator assembly; Figure 2 It is a structural schematic diagram of a tooling for welding a busbar and a star-point copper bar of the present invention; Figure 3 It is a schematic structural diagram of the bottom of the tooling for welding busbars and star-point copper bars of the present invention; Figure 4 It is a structural schematic diagram of the base, the driving mechanism, the first wire pressing component and the second wire pressing component of the present invention; Figure 5 It is a structural schematic diagram of the second wire pressing component of the present invention; Figure 6 It is a schematic diagram of the structure of the first pressing mechanism and the second pressing mechanism of the present invention; Figure 7 It is a schematic structural diagram of the first pressing block, the second pressing block, the bus bar and the star point copper bus bar of the present invention; Figure 8 It is a structural schematic diagram of the support plate of the present invention; Fig. 9 It is a structural schematic diagram of the first thread end and the second thread end of the present invention extending into the installation groove; Fig.10 It is a structural schematic diagram of the busbar and the star point copper bar of the present invention being inserted into the installation groove; Fig.11 It is a structural schematic diagram of the first pressing mechanism of the present invention pressing the busbar and the second pressing mechanism pressing the star point copper busbar; Fig.12 It is an exploded view of the assembly of the tooling for welding the busbar and the star-point copper bar of the present invention; In the figure: 1, base; 2, support plate; 3, first clamping mechanism; 4, second clamping mechanism; 5, first wire pressing component; 6, second wire pressing component; 7, busbar; 8, star point copper busbar; 9, mounting groove; 10, first wire end; 11, second wire end; 12, support tooth; 13, limit abutment portion; 14, first pressure block; 15, first pressure component; 16, pressure finger; 17, first positioning hole; 18, positioning groove; 19, first positioning pin; 20, second positioning pin; 21, opening groove; 22, positioning block; 23, third positioning pin; 24, second pressure block; 25, second positioning hole; 26, fourth positioning pin; 27, fixing seat; 28, pressure rod; 29, locking bolt; 30, first waist-shaped hole; 31. Bolt hole; 32. Support arm; 33. Pin hole; 34. Ball screw; 35. Drive ring; 36. Handle; 37. Locking pin; 38. Drive groove; 39. Transmission pin; 40. Locking hole; 41. First slide seat; 42. First pressure head; 43. Second slide seat; 44. Second pressure head; 45. Second elastic member; 46. Second abutment bolt; 47. Third waist-shaped hole; 48. Second clamping groove; 49. Second protrusion; 50. Upper seat body; 51. Middle seat body; 52. Lower seat body; 53. Through hole; 54. Handle; 55. Positioning assembly part; 56. Side positioning surface; 57. End positioning surface; 58. Clip; 100. Stator assembly; 200. Stator core; 300. Stator winding. DETAILED DESCRIPTION

[0016] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments in conjunction with the accompanying drawings.

[0017] like Figures 1 to 12 As shown, a tool for welding busbars and star-point copper bars comprises a base 1, a support plate 2, a first clamping mechanism 3, a second clamping mechanism 4, a driving mechanism, at least one first wire pressing component 5 and at least one second wire pressing component 6; The stator assembly 100 has a first wire end 10 for welding with the busbar 7 and a second wire end 11 for welding with the star point copper bar 8; The base 1 is provided with a mounting groove 9 for placing and passing the busbar 7 and the star point copper bar 8. The base 1 is used to be positioned and assembled on the stator assembly 100 so that the first wire head 10 and the second wire head 11 in the stator assembly 100 extend from bottom to top into the mounting groove 9; The support plate 2 is slidably connected to the base 1, and the support plate 2 is used to slide into the installation groove 9 to support the bus 7 placed in the installation groove 9, and to slide out of the installation groove 9 to release the support for the bus 7; The first wire pressing component 5 and the second wire pressing component 6 are respectively connected to the base 1 in a radially sliding manner, and the second wire pressing component 6 is provided with a supporting tooth 12; The driving mechanism is connected to the base 1 and is respectively connected to the first wire pressing component 5 and the second wire pressing component 6, and the driving mechanism is used to drive the first wire pressing component 5 and the second wire pressing component 6 to move radially inward to a position so that the first wire pressing component 5 abuts against the first wire head 10 extending into the installation groove 9 and presses the first wire head 10 on the bus 7 placed in the installation groove 9, and the second wire pressing component 6 abuts against the second wire head 11 extending into the installation groove 9 and presses the second wire head 11 on the star point copper bus 8 placed in the installation groove 9, and the support teeth 12 support the star point copper bus 8 placed in the installation groove 9, and the driving mechanism is also used to drive the first wire pressing component 5 and the second wire pressing component 6 to move radially outward to a position so that the first wire pressing component 5 is disengaged from the first wire head 10 and the second wire pressing component 6 is disengaged from the second wire head 11, and the support teeth 12 withdraw from under the star point copper bus 8 to release the support for the star point copper bus 8; The first clamping mechanism 3 is connected to the base 1 and is used to clamp and fix the busbar 7 placed in the installation groove 9, and the second clamping mechanism 4 is connected to the base 1 and is used to clamp and fix the star point copper busbar 8 placed in the installation groove 9. Specifically, the base 1 is first positioned and assembled on the stator assembly 100. After the assembly is in place, the first wire head 10 and the second wire head 11 in the stator assembly 100 will extend from bottom to top into the installation groove 9, and then the support plate 2 is slid to extend into the installation groove 9, and the first wire pressing component 5 and the second wire pressing component 6 are driven by the driving mechanism to move radially inward to a position. Then the busbar 7 and the star-point copper busbar 8 are placed into the mounting groove 9. At this time, the support plate 2 can support the busbar 7 and the support teeth 12 can support the star-point copper busbar 8. At the same time, the first wire pressing component 5 can press the first wire end 10 in the mounting groove 9 onto the busbar 7, and the second wire pressing component 6 can press the second wire end 11 in the mounting groove 9 onto the star-point copper busbar 8. Then, the busbar 7 is clamped and fixed by the first clamping mechanism 3 and the star-point copper bar 8 is clamped and fixed by the second clamping mechanism 4, thereby achieving the simultaneous clamping and fixing of the busbar 7 and the star-point copper bar 8 on the stator assembly 100. Then, the busbar 7 can be welded to the first wire end 10 in the stator assembly 100 and the star-point copper bar 8 can be welded to the second wire end 11 in the stator assembly 100 by welding equipment, thereby achieving the welding of the busbar 7 and the star-point copper bar 8 by one clamping, which greatly improves the efficiency of the welding process and only needs to use one set of tooling, which greatly saves the design and manufacturing cost of the tooling fixture. More specifically, after welding is completed, the first clamping mechanism 3 releases the busbar 7, the second clamping mechanism 4 releases the star-point copper bar 8, the support plate 2 is slid to exit the mounting groove 9 to release the support for the busbar 7, and the first wire pressing component 5 and the second wire pressing component 6 are driven by the driving mechanism to move radially outward to position, so that the first wire pressing component 5 is disengaged from the first wire head 10, and the second wire pressing component 6 is disengaged from the second wire head 11, and the supporting teeth 12 are withdrawn from under the star-point copper bar 8 to release the support for the star-point copper bar 8. Then the base 1 is lifted upward, and in the process of lifting the base 1, the busbar 7 and the star-point copper bar 8 will pass through the mounting groove 9, so that the base 1 can be removed from the stator assembly 100.

[0018] Specifically, the first wire end 10 and the second wire end 11 are provided with a plurality of them respectively, and the bus 7 is provided with a first pin corresponding to the first wire end 10 and a threading hole corresponding to the first wire end 10 one by one, and the first wire end 10 is used to be inserted into the corresponding threading hole and aligned with the corresponding first pin, and the first wire pressing component 5 is used to press the first wire end 10 onto the corresponding first pin. Among them, the insertion of the first wire end 10 into the threading hole can also play a preliminary positioning role for the bus 7. More specifically, the star point copper bus 8 is provided with a second pin corresponding to the second wire end 11 one by one, and the second wire pressing component 6 is used to press the second wire end 11 onto the corresponding second pin. In this embodiment, the first wire pressing component 5 and the second wire pressing component 6 are provided with 3 each.

[0019] like Figure 2 , 3 As shown in Figures 8, 9 and 10, the base 1 is provided with a limiting abutment portion 13 for abutting against the inner end of the bus bar 7 and the inner end of the star-point copper bus 8 so as to limit the radial position of the bus bar 7 and the star-point copper bus 8; specifically, the bus bar 7 and the star-point copper bus 8 are both arc-shaped structures.

[0020] like Figures 1 to 12 As shown, the first pressing mechanism 3 may include a first pressing block 14 and a first pressing assembly 15; The first pressing block 14 is used for being detachably mounted on the base 1 , and the first pressing block 14 is provided with at least one pressing finger 16 for pressing the bus 7 in the mounting groove 9 ; The base 1 is provided with a first positioning hole 17, the busbar 7 is provided with a positioning groove 18, the bottom of the first pressing block 14 is provided with a first positioning pin 19 for inserting into the first positioning hole 17 to define the position of the first pressing block 14 relative to the base 1, and a second positioning pin 20 for inserting into the positioning groove 18 to define the position of the busbar 7 relative to the first pressing block 14; The first pressure assembly 15 is connected to the base 1 and is used to press the first pressure block 14 installed on the base 1 so that the pressure fingers 16 on the first pressure block 14 press the bus 7 in the installation groove 9 .

[0021] Specifically, when the bus 7 is placed in the installation groove 9 and the support plate 2 supports the bus 7, the bus 7 needs to be clamped and fixed by the first clamping mechanism 3. The specific operation of the first clamping mechanism 3 to clamp the bus 7 is to first install the first clamping block 14 on the base 1 and clamp the bus 7 in the installation groove 9 by the clamping finger 16, and at the same time, the first positioning pin 19 is inserted into the first positioning hole 17 and the second positioning pin 20 is inserted into the positioning groove 18, and then the first pressure assembly 15 is used to press the first clamping block 14 so that the clamping finger 16 on the first clamping block 14 clamps the bus 7 in the installation groove 9. The first positioning pin 19 is inserted into the first positioning hole 17 and the second positioning pin 20 is inserted into the positioning groove 18 to precisely position the bus 7. To be more specific, two of the first locating pins 19 and the second locating pins 20 are respectively provided, the first locating holes 17 correspond one-to-one to the first locating pins 19, the locating grooves 18 correspond one-to-one to the second locating pins 20, the upper end of the first pressure block 14 is also connected to a first handle, the first pressure assembly 15 can be a quick clamp, the specific structure of the quick clamp is an existing technology well known to those skilled in the art, and is not described in detail in this embodiment.

[0022] like Figure 1 , 2 As shown in , 6, 7, 8, and 10, the star point copper busbar 8 is provided with an open slot 21; The base 1 is connected with a positioning stopper 22 for abutting against one end of the star point copper bar 8 in the mounting groove 9 to limit the circumferential position of the star point copper bar 8; The base 1 is connected with a third positioning pin 23 for being inserted into an open slot 21 in the star-point copper bar 8 to define the circumferential position of the star-point copper bar 8 .

[0023] like Figure 1 , 2 As shown in , 6, 9, 10, 11, and 12, the second pressing mechanism 4 may include a second pressing block 24 and a second pressing assembly; The second pressing block 24 is used to be detachably mounted on the base 1 and press the star point copper bus 8 in the mounting groove 9; The base 1 is provided with a second positioning hole 25, and the bottom of the second pressing block 24 is provided with a fourth positioning pin 26 for being inserted into the second positioning hole 25 to define the position of the second pressing block 24 relative to the base 1; The second pressure assembly is connected to the base 1 and is used to press the second pressure block 24 installed on the base 1 so that the second pressure block 24 presses the star point copper bar 8 in the installation slot 9. Specifically, when the star point copper bar 8 is placed in the installation slot 9 and the support teeth 12 support the star point copper bar 8, the star point copper bar 8 needs to be pressed and fixed by the second pressing mechanism 4. The specific operation of the second pressing mechanism 4 pressing the star point copper bar 8 is to first install the second pressure block 24 on the base 1 and press the star point copper bar 8 in the installation slot 9, and at the same time make the fourth positioning pin 26 inserted in the second positioning hole 25, and then press the second pressure block 24 by the second pressure assembly so that the second pressure block 24 presses the star point copper bar 8 in the installation slot 9. More specifically, there are two fourth positioning pins 26, and the second positioning holes 25 correspond to the fourth positioning pins 26 one by one. The upper end of the second pressure block 24 is also connected to a second handle.

[0024] like Figure 1 , 2 , 6, 9, 10, 11, 12, the second pressure assembly may include a fixing seat 27, a pressure rod 28 and a locking bolt 29; The fixing seat 27 is connected to the base 1, and a sliding channel is provided in the fixing seat 27; The pressing rod 28 is slidably fitted in the sliding fitting channel, and the pressing rod 28 is used to slide to press the upper end surface of the second pressing block 24 and to slide to be separated from the upper end surface of the second pressing block 24; A first waist-shaped hole 30 is provided in the pressure rod 28, and a bolt hole 31 is provided on the fixing seat 27. The locking bolt 29 passes through the bolt hole 31 and the first waist-shaped hole 30 and is threadedly connected to the base 1 to lock the fixing seat 27 to the base 1; specifically, the pressure rod 28 can be limited by the cooperation between the locking bolt 29 and the first waist-shaped hole 30.

[0025] Specifically, two supporting arms 32 are provided on the pallet 2. The pallet 2 has a supporting position and an exiting position during the sliding process. When the pallet 2 slides to the supporting position, the supporting arms 32 on the pallet 2 extend into the mounting groove 9 and then support the bus 7 placed in the mounting groove 9 through the supporting arms 32. When the pallet 2 slides to the exiting position, the supporting arms 32 exit the mounting groove 9 to release the support for the bus 7. More specifically, a third handle is connected to the pallet 2, a pin hole 33 is provided on the pallet 2, and a ball screw 34 is connected to the base 1. When the pallet 2 slides to the supporting position, the ball screw 34 is inserted into the pin hole 33 to confine the pallet 2 in the supporting position.

[0026] like Figure 1 , 2 As shown in , 4 and 5, the driving mechanism may include a driving ring 35, a handle 36 and a locking pin 37; The driving ring 35 is rotatably connected to the base 1, and a plurality of driving grooves 38 are provided on the driving ring 35; The first wire pressing component 5 and the second wire pressing component 6 are respectively connected with a transmission pin 39, and the transmission pin 39 is matched in the corresponding driving groove 38; The handle 36 is connected to the driving ring 35 and is used to drive the driving ring 35 to rotate, and then drive the first wire pressing component 5 and the second wire pressing component 6 to move radially through the cooperation between the driving groove 38 and the transmission pin 39; The base 1 is provided with a locking hole 40, and the locking pin 37 is connected to the handle 36. The locking pin 37 is used to be inserted into the locking hole 40 when the first wire pressing component 5 and the second wire pressing component 6 move radially inward into position, thereby locking the position of the handle 36. After the position of the handle 36 is locked, the position of the drive ring 35 can be locked, and then the position of the first wire pressing component 5 and the second wire pressing component 6 can be locked, so that the first wire pressing component 5 can keep pressing the first wire end 10 on the bus 7 and the second wire pressing component 6 can keep pressing the second wire end 11 on the star point copper bus 8, wherein the locking pin 37 can be a dividing pin.

[0027] like Figure 4 , 5 As shown, the first wire pressing component 5 may include a first slide seat 41, a first pressing head 42, a first elastic member and a first abutting bolt; The first slide 41 is connected to the base 1 in a radially sliding manner, and the transmission pin 39 provided on the first wire pressing component 5 is connected to the first slide 41 so that the first slide 41 is driven to move radially when the driving ring 35 rotates. The first pressing head 42 is slidably connected to the first sliding seat 41 along the radial direction of the base 1. A second waist-shaped hole is provided in the first pressing head 42. The second waist-shaped hole cooperates with the transmission pin 39 connected to the first sliding seat 41. The cooperation between the second waist-shaped hole and the corresponding transmission pin 39 can limit the sliding stroke of the first pressing head 42 in the first sliding seat 41, thereby preventing the first pressing head 42 from slipping off the first sliding seat 41. The first abutment bolt is connected to the first sliding seat 41; The first elastic member is installed in the first slide seat 41 and is located between the first pressure head 42 and the first abutment bolt. The first elastic member abuts against the first pressure head 42 and the first abutment bolt respectively. When the first slide seat 41 is driven to move radially inward to a position, the first elastic member drives the first pressure head 42 to abut against the first wire head 10 in the installation groove 9, thereby pressing the first wire head 10 against the bus 7 in the installation groove 9. The second wire pressing component 6 may include a second slide seat 43, a second pressing head 44, a second elastic member 45 and a second abutting bolt 46; The second slide 43 is connected to the base 1 in a radially sliding manner, and the transmission pin 39 provided on the second wire pressing component 6 is connected to the second slide 43 so that the second slide 43 can be driven to move radially when the driving ring 35 rotates; The second pressing head 44 is slidably connected to the second sliding seat 43 along the radial direction of the base 1. A third waist-shaped hole 47 is provided in the second pressing head 44. The third waist-shaped hole 47 cooperates with the transmission pin 39 connected to the second sliding seat 43. The tooth 12 is connected to the second pressing head 44. The third waist-shaped hole 47 cooperates with the corresponding transmission pin 39 to limit the sliding stroke of the second pressing head 44 in the second sliding seat 43, thereby preventing the second pressing head 44 from slipping off the second sliding seat 43. The second abutment bolt 46 is connected to the second sliding seat 43. The second elastic member 45 is installed in the second slide 43 and is located between the second pressure head 44 and the second abutment bolt 46. The second elastic member 45 abuts against the second pressure head 44 and the second abutment bolt 46 respectively. When the second slide 43 is driven to move radially inwardly into position, the second elastic member 45 drives the second pressure head 44 to abut against the second wire head 11 in the installation groove 9 and the support teeth 12 pass between adjacent second wire heads 11 so as to support the star point copper bus 8 placed in the installation groove 9. Specifically, when the handle 36 drives the drive ring 35 to rotate, the first slide 41 and the second slide 43 can be driven to move radially through the cooperation of the drive groove 38 and the transmission pin 39. When the first slide 41 is driven to move radially inwardly into position, the first pressure head 42 abuts against the first wire head 10 and the first elastic member can drive the first pressure head 42 to abut against the first wire head 10 through elastic force, thereby pressing the first wire head 10 onto the bus 7. Similarly, when the second slide 43 is driven to move radially inward into position, the second pressure head 44 abuts against the second wire head 11 and the second elastic member 45 can drive the second pressure head 44 to press against the second wire head 11 through elastic force, thereby pressing the second wire head 11 against the star point copper bus 8. In this embodiment, the base 1 is provided with a first sliding hole corresponding to the first slide 41 and a second sliding hole corresponding to the second slide 43. The first slide 41 is radially slidably arranged in the corresponding first sliding hole, and the second slide 43 is radially slidably arranged in the corresponding second sliding hole. Specifically, the first pressure head 42 is provided with a first clamping groove, and the bottom of the first clamping groove is provided with a first protrusion. When the first pressure head 42 abuts against the first wire head 10, the first wire head 10 is inserted into the corresponding first clamping groove and the first protrusion abuts against the corresponding first wire head 10. More specifically, a second pressing groove 48 is provided on the second pressing head 44, and a second protrusion 49 is provided at the bottom of the second pressing groove 48. When the second pressing head 44 presses against the second thread head 11, the second thread head 11 is inserted into the corresponding second pressing groove 48 and the second protrusion 49 presses against the corresponding second thread head 11.

[0028] like Figure 3 , 4 As shown in FIGS. 12 , the base 1 may include an upper base body 50, a middle base body 51 and a lower base body 52, the stator assembly 100 includes a stator core 200 and a stator winding 300, and the first wire end 10 and the second wire end 11 are arranged in the stator winding 300; The upper seat body 50 is connected to the upper end of the middle seat body 51, the mounting groove 9 is provided in the upper seat body 50, the support plate 2 is slidably connected to the upper seat body 50, and the first clamping mechanism 3 and the second clamping mechanism 4 are both mounted and connected to the upper seat body 50; The lower seat body 52 is connected to the lower end of the middle seat body 51. The lower seat body 52 is used to be positioned and assembled on the upper end of the stator core 200. The lower seat body 52 and the middle seat body 51 are respectively provided with a through hole 53 for one end of the stator winding 300 to extend into. The first wire pressing component 5 and the second wire pressing component 6 are respectively connected to the middle seat body 51 in a radially sliding manner, and the driving mechanism is connected to the middle seat body 51 .

[0029] Specifically, when the lower seat body 52 is positioned and assembled on the upper end of the stator core 200, the upper end of the stator winding 300 extends into the through hole 53 in the lower seat body 52 and the middle seat body 51, and the first wire end 10 and the second wire end 11 extend from bottom to top into the installation groove 9. More specifically, two handles 54 are connected to the middle seat body 51, the first sliding hole and the second sliding hole are both provided on the outer periphery of the middle seat body 51, the driving ring 35 in the driving mechanism is rotatably provided in the middle seat body 51, and the upper end of the stator winding 300 is also used to pass through the inner side of the driving ring 35. The limiting abutment portion 13 is arranged in the upper seat body 50, the first pressure block 14 and the second pressure block 24 are both used for detachable installation on the upper seat body 50, the first positioning hole 17, the second positioning hole 25, the positioning block 22, the third positioning pin 23 and the locking hole 40 are all arranged on the upper seat body 50, and the quick clamp, the fixing seat 27 in the second pressure assembly and the ball screw 34 are also connected to the upper seat body 50.

[0030] like Figure 3 As shown, the lower seat body 52 is provided with a plurality of positioning and assembly parts 55 distributed in sequence along the circumferential direction, and the positioning and assembly parts 55 are provided with side positioning surfaces 56 for cooperating and abutting with the outer side wall of the stator core 200 and end positioning surfaces 57 for abutting with the upper end surface of the stator core; There is still a slot on the outer wall of the stator core 200, and the positioning and assembly part 55 is connected with a clip 58 for being engaged in the slot for circumferential positioning; specifically, the side positioning surface 56 is matched and abutted against the outer wall of the stator core 200, the end positioning surface 57 is abutted against the upper end surface of the stator core, and the clip 58 is inserted into the slot, so that the lower seat body 52 can be positioned and assembled on the upper end of the stator core 200.

[0031] In summary, firstly, the base 1 is positioned and assembled on the stator assembly 100. After being assembled in place, the first wire end 10 and the second wire end 11 in the stator assembly 100 will extend from bottom to top into the installation slot 9. Then, the support plate 2 is slid to extend into the installation slot 9, and the first wire pressing component 5 and the second wire pressing component 6 are driven by the driving mechanism to move radially inward to their positions. Then, the bus 7 and the star point copper bus 8 are placed in the installation slot 9. At this time, the support plate 2 can support the bus 7 and the support teeth 12 can support the star point copper bus 8. At the same time, the first wire pressing component 5 can press the first wire end 10 in the installation slot 9 onto the bus 7, and the second wire pressing component 6 can press the second wire end 11 in the installation slot 9 onto the star point copper bus 8. Then, the busbar 7 is clamped and fixed by the first clamping mechanism 3 and the star-point copper bar 8 is clamped and fixed by the second clamping mechanism 4, thereby achieving the simultaneous clamping and fixing of the busbar 7 and the star-point copper bar 8 on the stator assembly 100. Then, the busbar 7 can be welded to the first wire end 10 in the stator assembly 100 and the star-point copper bar 8 can be welded to the second wire end 11 in the stator assembly 100 by welding equipment, thereby achieving the welding of the busbar 7 and the star-point copper bar 8 by one clamping, which greatly improves the efficiency of the welding process and only needs to use one set of tooling, which greatly saves the design and manufacturing cost of the tooling fixture. More specifically, after welding is completed, the first clamping mechanism 3 releases the busbar 7, the second clamping mechanism 4 releases the star-point copper bar 8, the support plate 2 is slid to exit the mounting groove 9 to release the support for the busbar 7, and the first wire pressing component 5 and the second wire pressing component 6 are driven by the driving mechanism to move radially outward to position, so that the first wire pressing component 5 is disengaged from the first wire head 10, and the second wire pressing component 6 is disengaged from the second wire head 11, and the supporting teeth 12 are withdrawn from under the star-point copper bar 8 to release the support for the star-point copper bar 8. Then the base 1 is lifted upward, and in the process of lifting the base 1, the busbar 7 and the star-point copper bar 8 will pass through the mounting groove 9, so that the base 1 can be removed from the stator assembly 100.

[0032] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A tool for welding busbars and star point copper bars, characterized in that: It comprises a base (1), a support plate (2), a first pressing mechanism (3), a second pressing mechanism (4), a driving mechanism, at least one first wire pressing component (5) and at least one second wire pressing component (6); The base (1) is provided with a mounting groove (9) for receiving the busbar (7) and the star point copper bar (8) and for passing the busbar (7) and the star point copper bar (8), and the base (1) is used to be positioned and assembled on the stator assembly (100) so that the first wire end (10) and the second wire end (11) in the stator assembly (100) extend from bottom to top into the mounting groove (9); The support plate (2) is slidably connected to the base (1), and the support plate (2) is used to slide into the installation groove (9) to support the bus (7) placed in the installation groove (9), and to slide out of the installation groove (9) to release the support for the bus (7); The first wire pressing component (5) and the second wire pressing component (6) are respectively connected to the base (1) in a radially sliding manner, and the second wire pressing component (6) is provided with a supporting tooth (12); The driving mechanism is connected to the base (1) and is respectively connected to the first wire pressing component (5) and the second wire pressing component (6), and is used to drive the first wire pressing component (5) and the second wire pressing component (6) to move radially inward to a position so that the first wire pressing component (5) abuts against a first wire end (10) extending into the installation groove (9) and presses the first wire end (10) onto the bus (7) inserted into the installation groove (9), and the second wire pressing component (6) abuts against a second wire end (11) extending into the installation groove (9) and presses the second wire end (11) onto the bus (7) inserted into the installation groove (9). The wire head (11) is pressed against the star point copper bar (8) placed in the installation groove (9) and the supporting teeth (12) support the star point copper bar (8) placed in the installation groove (9), and the driving mechanism is also used to drive the first wire pressing component (5) and the second wire pressing component (6) to move radially outward to a position so that the first wire pressing component (5) is separated from the first wire head (10) and the second wire pressing component (6) is separated from the second wire head (11) and the supporting teeth (12) are withdrawn from below the star point copper bar (8) to release the support for the star point copper bar (8); The first clamping mechanism (3) is connected to the base (1) and is used to clamp and fix the busbar (7) placed in the installation groove (9); The second pressing mechanism (4) is connected to the base (1) and is used to press and fix the star point copper busbar (8) placed in the installation groove (9).

2. The tooling for welding busbars and star-point copper bars according to claim 1 is characterized in that: The base (1) is provided with a limiting abutment portion (13) for abutting against the inner end of the busbar (7) and the inner end of the star-point copper bar (8) so as to limit the radial position of the busbar (7) and the star-point copper bar (8).

3. The tooling for welding busbars and star-point copper bars according to claim 1, characterized in that: The first pressing mechanism (3) comprises a first pressing block (14) and a first pressing assembly (15); The first pressing block (14) is used for being detachably mounted on the base (1), and the first pressing block (14) is provided with at least one pressing finger (16) for pressing the busbar (7) in the mounting groove (9); The base (1) is provided with a first positioning hole (17), the busbar (7) is provided with a positioning groove (18), and the bottom of the first pressing block (14) is provided with a first positioning pin (19) for inserting into the first positioning hole (17) to define the position of the first pressing block (14) relative to the base (1), and a second positioning pin (20) for inserting into the positioning groove (18) to define the position of the busbar (7) relative to the first pressing block (14); The first pressure-applying assembly (15) is connected to the base (1) and is used to press a first pressure block (14) mounted on the base (1), thereby causing the pressure fingers (16) on the first pressure block (14) to press the bus (7) in the mounting groove (9).

4. The tooling for welding busbars and star-point copper bars according to claim 1, characterized in that: The base (1) is connected with a positioning stopper (22) for abutting against one end of the star point copper bar (8) in the mounting groove (9) to limit the circumferential position of the star point copper bar (8); The base (1) is connected with a third positioning pin (23) for being inserted into an open slot (21) in the star-point copper busbar (8) to define the circumferential position of the star-point copper busbar (8).

5. The tooling for welding busbars and star-point copper bars according to claim 1, characterized in that: The second pressing mechanism (4) comprises a second pressing block (24) and a second pressing assembly; The second pressing block (24) is used to be detachably mounted on the base (1) and to press the star point copper busbar (8) in the mounting groove (9); The base (1) is provided with a second positioning hole (25), and the bottom of the second pressing block (24) is provided with a fourth positioning pin (26) for being inserted into the second positioning hole (25) to define the position of the second pressing block (24) relative to the base (1); The second pressure-applying assembly is connected to the base (1) and is used to press a second pressure block (24) mounted on the base (1), thereby causing the second pressure block (24) to press the star-point copper busbar (8) in the mounting groove (9).

6. The tooling for welding busbars and star-point copper bars according to claim 5, characterized in that: The second pressure-applying assembly comprises a fixing seat (27), a pressure rod (28) and a locking bolt (29); The fixing seat (27) is connected to the base (1), and a sliding channel is provided in the fixing seat (27); The pressing rod (28) is slidably fitted in the sliding fitting channel, and the pressing rod (28) is used to slide to press the upper end surface of the second pressing block (24) and to slide to disengage from the upper end surface of the second pressing block (24); The pressure rod (28) is provided with a first waist-shaped hole (30), the fixing seat (27) is provided with a bolt hole (31), and the locking bolt (29) passes through the bolt hole (31) and the first waist-shaped hole (30) and is then threadedly connected to the base (1), thereby locking the fixing seat (27) to the base (1).

7. The tooling for welding busbars and star-point copper bars according to claim 1, characterized in that: The driving mechanism comprises a driving ring (35), a handle (36) and a locking pin (37); The driving ring (35) is rotatably connected to the base (1), and a plurality of driving grooves (38) are provided on the driving ring (35); The first wire pressing component (5) and the second wire pressing component (6) are respectively connected to a transmission pin (39), and the transmission pin (39) is fitted in the corresponding driving groove (38); The handle (36) is connected to the drive ring (35) and is used to drive the drive ring (35) to rotate, thereby driving the first wire pressing component (5) and the second wire pressing component (6) to move radially respectively through the cooperation between the drive groove (38) and the transmission pin (39); The base (1) is provided with a locking hole (40), the locking pin (37) is connected to the handle (36), and the locking pin (37) is used to be inserted into the locking hole (40) when the first wire pressing component (5) and the second wire pressing component (6) are moved radially inward to a position, thereby locking the position of the handle (36).

8. The tooling for welding busbars and star-point copper bars according to claim 7, characterized in that: The first wire pressing component (5) comprises a first sliding seat (41), a first pressing head (42), a first elastic member and a first abutting bolt; The first slide seat (41) is slidably connected to the base (1) in a radial direction of the base (1), and a transmission pin (39) provided on the first wire pressing component (5) is connected to the first slide seat (41) so that the first slide seat (41) is driven to move in a radial direction when the driving ring (35) rotates; The first pressing head (42) is slidably connected to the first sliding seat (41) along the radial direction of the base (1); a second waist-shaped hole is provided in the first pressing head (42); the second waist-shaped hole cooperates with a driving pin (39) connected to the first sliding seat (41); The first abutment bolt is connected to the first sliding seat (41); The first elastic member is installed in the first sliding seat (41) and is located between the first pressing head (42) and the first abutting bolt. The first elastic member abuts against the first pressing head (42) and the first abutting bolt respectively. When the first sliding seat (41) is driven to move radially inward to a position, the first elastic member drives the first pressing head (42) to abut against the first thread head (10) in the installation groove (9); The second wire pressing component (6) comprises a second sliding seat (43), a second pressing head (44), a second elastic member (45) and a second abutting bolt (46); The second slide seat (43) is slidably connected to the base (1) in a radial direction of the base (1), and a transmission pin (39) provided on the second wire pressing component (6) is connected to the second slide seat (43) so that the second slide seat (43) is driven to move in a radial direction when the driving ring (35) rotates; The second pressing head (44) is slidably connected to the second sliding seat (43) along the radial direction of the base (1); a third waist-shaped hole (47) is provided in the second pressing head (44); the third waist-shaped hole (47) cooperates with a transmission pin (39) connected to the second sliding seat (43); and the support tooth (12) is connected to the second pressing head (44); The second abutment bolt (46) is connected to the second sliding seat (43); The second elastic member (45) is installed in the second slide seat (43) and is located between the second pressure head (44) and the second abutment bolt (46). The second elastic member (45) abuts against the second pressure head (44) and the second abutment bolt (46) respectively. When the second slide seat (43) is driven to move radially inward to a position, the second elastic member (45) drives the second pressure head (44) to abut against the second wire head (11) in the installation groove (9), and the supporting teeth (12) pass between adjacent second wire heads (11) so as to support the star point copper busbar (8) placed in the installation groove (9).

9. The tooling for welding busbars and star-point copper bars according to claim 1, characterized in that: The base (1) comprises an upper base body (50), a middle base body (51) and a lower base body (52); the stator assembly (100) comprises a stator core (200) and a stator winding (300); the first wire end (10) and the second wire end (11) are arranged in the stator winding (300); The upper seat body (50) is connected to the upper end of the middle seat body (51), the mounting groove (9) is provided in the upper seat body (50), the support plate (2) is slidably connected to the upper seat body (50), and the first clamping mechanism (3) and the second clamping mechanism (4) are both mounted and connected to the upper seat body (50); The lower seat body (52) is connected to the lower end of the middle seat body (51), and the lower seat body (52) is used to be positioned and assembled on the upper end of the stator core (200). The lower seat body (52) and the middle seat body (51) are respectively provided with a through hole (53) for one end of the stator winding (300) to extend into. The first wire pressing component (5) and the second wire pressing component (6) are respectively connected to the middle seat body (51) in a radially sliding manner, and the driving mechanism is connected to the middle seat body (51).

10. The tooling for welding busbars and star-point copper bars according to claim 9, characterized in that: The lower seat body (52) is provided with a plurality of positioning and assembly parts (55) distributed in sequence along the circumferential direction, and the positioning and assembly parts (55) are provided with side positioning surfaces (56) for cooperating and abutting against the outer side wall of the stator core (200) and end positioning surfaces (57) for abutting against the upper end surface of the stator core; The outer side wall of the stator core (200) is also provided with a slot, and the positioning assembly portion (55) is connected with a clip (58) for being fitted in the slot for circumferential positioning.

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