Tooling for welding busbars and star point copper bars

Abstract

The present invention discloses a tooling for welding a bus bar and a star point copper bar, which includes a base, a supporting plate, a first pressing mechanism, a second pressing mechanism, a driving mechanism, a first wire pressing component and a second wire pressing component; an installation groove for placing the bus bar and the star point copper bar and allowing the bus bar and the star point copper bar to pass through is provided in the base, and the base is used for positioning and assembling on a stator assembly so that a first wire end and a second wire end in the stator assembly extend into the installation groove from bottom to top. The supporting plate is slidably connected to the base, and the supporting plate is used for sliding into the installation groove to support the bus bar placed in the installation groove and for sliding out of the installation groove. The present invention can simultaneously clamp and fix the bus bar and the star point copper bar on the stator assembly, and can complete the welding of the bus bar and the star point copper bar in one clamping, which can not only improve the efficiency of welding processing, but also save the design and manufacturing cost of the tooling fixture.

Description

Technical Field

[0001] The present invention relates to a tooling for welding a bus bar and a star point copper bar. Background Art

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

[0004] To solve the above technical problem, the technical solution of the present invention is: a tooling for welding a bus bar and a star point copper bar, comprising a base, a support plate, a first pressing mechanism, a second pressing mechanism, a driving mechanism, at least one first wire pressing member and at least one second wire pressing member;

[0005] An installation groove for placing the bus bar and the star point copper bar and for the bus bar and the star point copper bar to pass through is provided in the base, and the base is used for positioning and assembling on the stator assembly so that the first lead and the second lead in the stator assembly extend upward into the installation groove from below;

[0006] The support plate is slidably connected to the base, and the support plate is used for sliding into the installation groove to support the bus bar placed in the installation groove and for sliding out of the installation groove to release the support for the bus bar;

[0007] The first wire pressing member and the second wire pressing member are respectively slidably connected to the base in the radial direction, and a support tooth is provided on the second wire pressing member;

[0008] The driving mechanism is connected to the base and is respectively connected to the first wire pressing member and the second wire pressing member. The driving mechanism is used to drive the first wire pressing member and the second wire pressing member to move radially inward to a position where the first wire pressing member abuts against the first wire head extending into the installation groove and presses the first wire head against the bus bar placed in the installation groove, and the second wire pressing member abuts against the second wire head extending into the installation groove and presses the second wire head against the star point copper bar placed in the installation groove, and the supporting teeth support the star point copper bar placed in the installation groove. The driving mechanism is also used to drive the first wire pressing member and the second wire pressing member to move radially outward to a position where the first wire pressing member is disengaged from the first wire head and the second wire pressing member is disengaged from the second wire head, and the supporting teeth withdraw from below the star point copper bar to release the support for the star point copper bar;

[0009] The first pressing mechanism is connected to the base and is used to press and fix the bus bar placed in the installation groove;

[0010] The second pressing mechanism is connected to the base and is used to press and fix the star point copper bar placed in the installation groove.

[0011] Further, the base is provided with a limiting abutting portion for abutting against the inner end portions of the bus bar and the star point copper bar to define the radial positions of the bus bar and the star point copper bar.

[0012] Further, the first pressing mechanism includes a first pressing block and a first pressing component;

[0013] The first pressing block is used for detachably installing on the base, and at least one pressing finger for pressing the bus bar in the installation groove is provided on the first pressing block;

[0014] The base is provided with a first positioning hole, the bus bar is provided with a positioning groove, and the bottom of the first pressing block is provided with a first positioning pin for being inserted into the first positioning hole to define the position of the first pressing block relative to the base and a second positioning pin for being inserted into the positioning groove to define the position of the bus bar relative to the first pressing block;

[0015] The first pressing component is connected to the base and is used to act to press the first pressing block installed on the base, so that the pressing fingers on the first pressing block press the bus bar in the installation groove.

[0016] Further, a positioning stop block for abutting against one end of the star point copper bar in the installation groove to define the circumferential position of the star point copper bar is connected to the base;

[0017] A third positioning pin is connected to the base and is used to be inserted into the opening groove in the star point copper busbar to define the circumferential position of the star point copper busbar.

[0018] Furthermore, the second pressing mechanism includes a second pressing block and a second pressing component;

[0019] The second pressing block is used for detachably mounting on the base and pressing the star point copper busbar in the mounting groove;

[0020] The base is provided with a second positioning hole, and the bottom of the second pressing block is provided with a fourth positioning pin for being inserted into the second positioning hole to define the position of the second pressing block relative to the base;

[0021] The second pressing component is connected to the base and is used for acting to press the second pressing block mounted on the base so that the second pressing block presses the star point copper busbar in the mounting groove.

[0022] Furthermore, the second pressing component includes a fixed seat, a pressing rod and a locking bolt;

[0023] The fixed seat is connected to the base, and a sliding channel is provided in the fixed seat;

[0024] The pressing rod is slidably fitted in the sliding channel, and the pressing rod is used for sliding to press the upper end surface of the second pressing block and for sliding to disengage from the upper end surface of the second pressing block;

[0025] A first waist-shaped hole is provided in the pressing rod, a bolt hole is provided on the fixed seat, and the locking bolt passes through the bolt hole and the first waist-shaped hole and is then threadedly connected to the base to lock and connect the fixed seat to the base.

[0026] Furthermore, the driving mechanism includes a driving ring, a handle and a locking pin;

[0027] The driving ring is rotatably connected in the base, and a plurality of driving grooves are provided on the driving ring;

[0028] Driving pins are respectively connected to the first wire pressing component and the second wire pressing component, and the driving pins are fitted in the corresponding driving grooves;

[0029] The handle is connected to the driving ring and is used for driving the driving ring to rotate, and then driving the first wire pressing component and the second wire pressing component to move radially respectively through the cooperation of the driving grooves and the driving pins;

[0030] The base is provided with a locking hole, the locking pin is connected to the handle, and the locking pin is used for being inserted into the locking hole when the first wire pressing component and the second wire pressing component move radially inward in place to lock the position of the handle.

[0031] Further, the first wire pressing member includes a first sliding seat, a first pressing head, a first elastic member, and a first abutting bolt;

[0032] The first sliding seat is slidably connected to the base along the radial direction of the base, and a transmission pin provided on the first wire pressing member is connected to the first sliding seat so that when the driving ring rotates, the first sliding seat is driven to move radially;

[0033] The first pressing head is slidably connected to the first sliding seat along the radial direction of the base. A second waist-shaped hole is provided in the first pressing head, and the second waist-shaped hole is matched with the transmission pin connected to the first sliding seat;

[0034] The first abutting bolt is connected to the first sliding seat;

[0035] The first elastic member is installed in the first sliding seat and is located between the first pressing head and the first abutting bolt. The first elastic member abuts against the first pressing head and the first abutting bolt respectively. When the first sliding seat is driven to move radially inward to the in-place position, the first elastic member drives the first pressing head to tightly press the first wire head in the installation groove;

[0036] The second wire pressing member includes a second sliding seat, a second pressing head, a second elastic member, and a second abutting bolt;

[0037] The second sliding seat is slidably connected to the base along the radial direction of the base, and a transmission pin provided on the second wire pressing member is connected to the second sliding seat so that when the driving ring rotates, the second sliding seat is driven to move radially;

[0038] 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, and the third waist-shaped hole is matched with the transmission pin connected to the second sliding seat. The supporting tooth is connected to the second pressing head;

[0039] The second abutting bolt is connected to the second sliding seat;

[0040] The second elastic member is installed in the second sliding seat and is located between the second pressing head and the second abutting bolt. The second elastic member abuts against the second pressing head and the second abutting bolt respectively. When the second sliding seat is driven to move radially inward to the in-place position, the second elastic member drives the second pressing head to tightly press the second wire head in the installation groove and the supporting tooth passes through between the adjacent second wire heads so as to support the star point copper bar placed in the installation groove.

[0041] Furthermore, the base includes an upper seat body, a middle seat body, and a lower seat body. The stator assembly includes a stator core and a stator winding. The first lead and the second lead are disposed in the stator winding;

[0042] The upper seat body is connected to the upper end portion of the middle seat body. The installation groove is disposed in the upper seat body. The support plate is slidably connected to the upper seat body. The first pressing mechanism and the second pressing mechanism are both installed and connected to the upper seat body;

[0043] The lower seat body is connected to the lower end portion of the middle seat body. The lower seat body is used for positioning and assembling on the upper end portion of the stator core. Through holes for one end portion of the stator winding to extend into are respectively provided in the lower seat body and the middle seat body;

[0044] The first wire pressing member and the second wire pressing member are respectively slidably connected in the middle seat body in the radial direction. The driving mechanism is connected to the middle seat body.

[0045] Furthermore, a plurality of circumferentially distributed positioning and assembling portions are provided on the lower seat body. The positioning and assembling portions are provided with a side positioning surface for cooperating with and abutting against the outer side wall of the stator core and an end positioning surface for abutting against the upper end surface of the stator core;

[0046] A clamping groove is further provided on the outer side wall of the stator core. A clip for being clamped in the clamping groove for circumferential positioning is connected to the positioning and assembling portion.

[0047] After adopting the above technical solution, first, the base is positioned and assembled onto the stator assembly. After the assembly is in place, the first lead and the second lead in the stator assembly will extend upward into the installation groove. Then, the tray is slid to extend into the installation groove, and the first pressing component and the second pressing component are driven by the driving mechanism to move radially inward to the in-place position. Then, the bus bar and the star point copper bar are placed into the installation groove. At this time, the tray can support the bus bar and the supporting teeth can support the star point copper bar. At the same time, the first pressing component can press the first lead in the installation groove against the bus bar, and the second pressing component can press the second lead in the installation groove against the star point copper bar. Then, the bus bar is firmly fixed by the first pressing mechanism and the star point copper bar is firmly fixed by the second pressing mechanism, thereby realizing the simultaneous clamping and fixing of the bus bar and the star point copper bar on the stator assembly. Then, the bus bar can be welded to the first lead in the stator assembly and the star point copper bar can be welded to the second lead in the stator assembly through a welding device, achieving the welding of the bus bar and the star point copper bar in one clamping, greatly improving the efficiency of the welding process, and only requiring the use of a set of tooling, greatly saving the design and manufacturing cost of the tooling fixture. Further specifically, after welding is completed, the first pressing mechanism releases the bus bar, and the second pressing mechanism releases the star point copper bar. The tray is slid to withdraw from the installation groove to relieve the support for the bus bar. The first pressing component and the second pressing component are driven by the driving mechanism to move radially outward to the in-place position, so that the first pressing component is disengaged from abutting against the first lead, and the second pressing component is disengaged from abutting against the second lead, and the supporting teeth withdraw from below the star point copper bar to relieve the support for the star point copper bar. Then, the base is lifted upward. During the process of lifting the base, the bus bar and the star point copper bar will pass through the installation groove, and thus the base can be removed from the stator assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 Schematic structural diagram of the tooling for welding the bus bar and the star point copper bar of the present invention assembled on the stator assembly;

[0049] Figure 2 Schematic structural diagram of the tooling for welding the bus bar and the star point copper bar of the present invention;

[0050] Figure 3 Schematic structural diagram of the bottom of the tooling for welding the bus bar and the star point copper bar of the present invention;

[0051] Figure 4 Schematic structural diagram of the base, the driving mechanism, the first pressing component and the second pressing component of the present invention;

[0052] Figure 5Schematic diagram of the structure of the second wire pressing component of the present invention;

[0053] Figure 6 Schematic diagram of the structures of the first pressing mechanism and the second pressing mechanism of the present invention;

[0054] Figure 7 Schematic diagram of the structures of the first pressing block, the second pressing block, the busbar and the star point copper bar of the present invention;

[0055] Figure 8 Schematic diagram of the structure of the support plate of the present invention;

[0056] Figure 9 Schematic diagram of the structures of the first wire end and the second wire end extending into the installation groove of the present invention;

[0057] Figure 10 Schematic diagram of the structures of the busbar and the star point copper bar placed in the installation groove of the present invention;

[0058] Figure 11 Schematic diagram of the structure in which the first pressing mechanism presses the busbar and the second pressing mechanism presses the star point copper bar of the present invention;

[0059] Figure 12 Exploded assembly view of the tooling for welding the busbar and the star point copper bar of the present invention;

[0060] In the figure: 1, base; 2, support plate; 3, first pressing mechanism; 4, second pressing mechanism; 5, first wire pressing component; 6, second wire pressing component; 7, busbar; 8, star point copper bar; 9, installation groove; 10, first wire end; 11, second wire end; 12, supporting tooth; 13, limiting abutting part; 14, first pressing block; 15, first pressing component; 16, pressing 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 pressing block; 25, second positioning hole; 26, fourth positioning pin; 27, fixed seat; 28, pressing rod; 29, locking bolt; 30, first waist-shaped hole; 31, bolt hole; 32, supporting arm; 33, pin hole; 34, ball screw; 35, driving ring; 36, handle; 37, locking pin; 38, driving groove; 39, transmission pin; 40, locking hole; 41, first sliding seat; 42, first pressing head; 43, second sliding seat; 44, second pressing head; 45, second elastic member; 46, second abutting bolt; 47, third waist-shaped hole; 48, second pressing groove; 49, second protruding part; 50, upper seat body; 51, middle seat body; 52, lower seat body; 53, through hole; 54, handle; 55, positioning and assembling part; 56, side positioning surface; 57, end positioning surface; 58, clip; 100, stator assembly; 200, stator core; 300, stator winding. Detailed implementation manners

[0061] In order to make the content of the present invention easier to be clearly understood, the following further describes the present invention in detail according to specific embodiments in conjunction with the accompanying drawings.

[0062] As Figures 1 to 12 shown, a tooling for welding a busbar and a star point copper bar includes 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 member 5 and at least one second wire pressing member 6;

[0063] 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;

[0064] The base 1 is provided with a mounting groove 9 for the busbar 7 and the star point copper bar 8 to be placed in and pass through, and the base 1 is used for positioning and assembling on the stator assembly 100 so that the first wire end 10 and the second wire end 11 in the stator assembly 100 extend into the mounting groove 9 from bottom to top;

[0065] The support plate 2 is slidably connected to the base 1, and the support plate 2 is used for sliding into the mounting groove 9 to support the busbar 7 placed in the mounting groove 9 and for sliding out of the mounting groove 9 to release the support for the busbar 7;

[0066] The first wire pressing member 5 and the second wire pressing member 6 are respectively slidably connected to the base 1 in the radial direction, and the second wire pressing member 6 is provided with a supporting tooth 12;

[0067] The driving mechanism is connected to the base 1 and is respectively connected to the first wire pressing member 5 and the second wire pressing member 6. The driving mechanism is used to drive the first wire pressing member 5 and the second wire pressing member 6 to move radially inward to a position where the first wire pressing member 5 abuts against the first wire end 10 extending into the mounting groove 9 and presses the first wire end 10 against the busbar 7 placed in the mounting groove 9, and the second wire pressing member 6 abuts against the second wire end 11 extending into the mounting groove 9 and presses the second wire end 11 against the star point copper bar 8 placed in the mounting groove 9, and the supporting tooth 12 supports the star point copper bar 8 placed in the mounting groove 9. The driving mechanism is further used to drive the first wire pressing member 5 and the second wire pressing member 6 to move radially outward to a position where the first wire pressing member 5 is disengaged from the first wire end 10 and the second wire pressing member 6 is disengaged from the second wire end 11, and the supporting tooth 12 withdraws from below the star point copper bar 8 to release the support for the star point copper bar 8;

[0068] The first pressing mechanism 3 is connected to the base 1 and is used to press and fix the bus bar 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 bar 8 placed in the installation groove 9. Specifically, first, the base 1 is positioned and assembled onto the stator assembly 100. After the assembly is in place, the first lead 10 and the second lead 11 in the stator assembly 100 will extend upward into the installation groove 9. Then, the support plate 2 is slid to extend into the installation groove 9, and the first wire pressing member 5 and the second wire pressing member 6 are driven by the driving mechanism to move radially inward to the in-place position. Then, the bus bar 7 and the star point copper bar 8 are placed in the installation groove 9. At this time, the support plate 2 can support the bus bar 7 and the support teeth 12 can support the star point copper bar 8. At the same time, the first wire pressing member 5 can press the first lead 10 in the installation groove 9 onto the bus bar 7, and the second wire pressing member 6 can press the second lead 11 in the installation groove 9 onto the star point copper bar 8. Then, the bus bar 7 is pressed and fixed by the first pressing mechanism 3 and the star point copper bar 8 is pressed and fixed by the second pressing mechanism 4, thereby realizing clamping and fixing the bus bar 7 and the star point copper bar 8 on the stator assembly 100 at the same time. Then, the bus bar 7 can be welded to the first lead 10 in the stator assembly 100 and the star point copper bar 8 can be welded to the second lead 11 in the stator assembly 100 through a welding device, realizing the welding of the bus bar 7 and the star point copper bar 8 in one clamping, greatly improving the efficiency of welding processing, and only requiring the use of a set of tooling, greatly saving the design and manufacturing cost of the tooling fixture. Further specifically, after welding is completed, the first pressing mechanism 3 is loosened from the bus bar 7, and the second pressing mechanism 4 is loosened from the star point copper bar 8. The support plate 2 is slid to withdraw from the installation groove 9 to release the support for the bus bar 7. The first wire pressing member 5 and the second wire pressing member 6 are driven by the driving mechanism to move radially outward to the in-place position, so that the first wire pressing member 5 is disengaged from abutting against the first lead 10, and the second wire pressing member 6 is disengaged from abutting against the second lead 11, and the support teeth 12 are withdrawn from below the star point copper bar 8 to release the support for the star point copper bar 8. Then, the base 1 is lifted upward. During the process of lifting the base 1, the bus bar 7 and the star point copper bar 8 will pass through the installation groove 9, and thus the base 1 can be removed from the stator assembly 100.

[0069] Specifically, a plurality of the first wire ends 10 and the second wire ends 11 are respectively provided. The bus bar 7 is provided with first pins corresponding to the first wire ends 10 one by one and wire passing holes corresponding to the first wire ends 10 one by one. The first wire ends 10 are used to be inserted into the corresponding wire passing holes and aligned with the corresponding first pins. The first wire pressing component 5 is used to press the first wire ends 10 against the corresponding first pins. Among them, when the first wire ends 10 are inserted into the wire passing holes, they can also play a preliminary positioning role for the bus bar 7. Further specifically, the star point copper bar 8 is provided with second pins corresponding to the second wire ends 11 one by one. The second wire pressing component 6 is used to press the second wire ends 11 against the corresponding second pins. In this embodiment, 3 first wire pressing components 5 and 3 second wire pressing components 6 are respectively provided.

[0070] As Figure 2 , 3 As shown in Figures 7, 8, 9, and 10, the base 1 is provided with a limiting abutting portion 13 for abutting against the inner ends of the bus bar 7 and the star point copper bar 8 to limit the radial positions of the bus bar 7 and the star point copper bar 8; specifically, both the bus bar 7 and the star point copper bar 8 are arc-shaped structures.

[0071] As Figures 1 to 12 shown, the first pressing mechanism 3 may include a first pressing block 14 and a first pressing component 15;

[0072] The first pressing block 14 is used to be detachably mounted on the base 1. The first pressing block 14 is provided with at least one pressing finger 16 for pressing the bus bar 7 in the mounting groove 9;

[0073] The base 1 is provided with a first positioning hole 17, the bus bar 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 being inserted into the first positioning hole 17 to limit the position of the first pressing block 14 relative to the base 1 and a second positioning pin 20 for being inserted into the positioning groove 18 to limit the position of the bus bar 7 relative to the first pressing block 14;

[0074] The first pressing component 15 is connected to the base 1 and is used to act to press the first pressing block 14 mounted on the base 1, so that the pressing fingers 16 on the first pressing block 14 press the bus bar 7 in the mounting groove 9.

[0075] Specifically, after the bus bar 7 is placed in the installation groove 9 and the support plate 2 supports the bus bar 7, the first pressing mechanism 3 is required to press and fix the bus bar 7. The specific operation of the first pressing mechanism 3 pressing the bus bar 7 is as follows: First, install the first pressing block 14 on the base 1 and press the bus bar 7 located in the installation groove 9 through the pressing finger 16. At the same time, insert the first positioning pin 19 into the first positioning hole 17 and insert the second positioning pin 20 into the positioning groove 18. Then, press the first pressing block 14 through the first pressing assembly 15, so that the pressing finger 16 on the first pressing block 14 presses the bus bar 7 in the installation groove 9. Among them, inserting the first positioning pin 19 into the first positioning hole 17 and inserting the second positioning pin 20 into the positioning groove 18 can accurately position the bus bar 7. Further specifically, there are two first positioning pins 19 and two second positioning pins 20 respectively. The first positioning holes 17 correspond to the first positioning pins 19 one by one, and the positioning grooves 18 correspond to the second positioning pins 20 one by one. A first handle is also connected to the upper end of the first pressing block 14. The first pressing assembly 15 can be a quick clamp, and the specific structure of the quick clamp is the prior art well-known to those skilled in the art and will not be specifically described in this embodiment.

[0076] As Figure 1 、 2 、6, 7, 8, 10 show, an opening groove 21 is provided on the star point copper bar 8;

[0077] A positioning block 22 is connected to the base 1 for abutting against one end of the star point copper bar 8 in the installation groove 9 to limit the circumferential position of the star point copper bar 8;

[0078] A third positioning pin 23 is connected to the base 1 for being inserted into the opening groove 21 in the star point copper bar 8 to limit the circumferential position of the star point copper bar 8.

[0079] As Figure 1 、 2 、6, 9, 10, 11, 12 show, the second pressing mechanism 4 may include a second pressing block 24 and a second pressing assembly;

[0080] The second pressing block 24 is used for detachably installing on the base 1 and pressing the star point copper bar 8 in the installation groove 9;

[0081] A second positioning hole 25 is provided on the base 1, and a fourth positioning pin 26 is provided at the bottom of the second pressing block 24 for being inserted into the second positioning hole 25 to limit the position of the second pressing block 24 relative to the base 1;

[0082] The second pressing component is connected to the base 1 and is used to act to press the second pressing block 24 mounted on the base 1, so as to press the star point copper bar 8 in the mounting groove 9 by the second pressing block 24. Specifically, after the star point copper bar 8 is placed in the mounting groove 9 and the supporting 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 to press the star point copper bar 8 is as follows: first, the second pressing block 24 is mounted on the base 1 and presses the star point copper bar 8 located in the mounting groove 9, and at the same time, the fourth positioning pin 26 is inserted into the second positioning hole 25, and then the second pressing component presses the second pressing block 24, so as to press the star point copper bar 8 in the mounting groove 9 by the second pressing block 24. Further specifically, there are two fourth positioning pins 26, the second positioning holes 25 correspond to the fourth positioning pins 26 one by one, and a second handle is further connected to the upper end of the second pressing block 24.

[0083] As Figure 1 , 2 , 6, 9, 10, 11, 12 show, the second pressing component may include a fixed seat 27, a pressing rod 28 and a locking bolt 29;

[0084] The fixed seat 27 is connected to the base 1, and a sliding channel is provided in the fixed seat 27;

[0085] The pressing rod 28 is slidably fitted in the sliding channel. The pressing rod 28 is used to slide to press the upper end surface of the second pressing block 24 and to slide away from the upper end surface of the second pressing block 24;

[0086] A first waist-shaped hole 30 is provided in the pressing rod 28, a bolt hole 31 is provided on the fixed seat 27, and 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, so as to lock and connect the fixed seat 27 to the base 1; specifically, the cooperation between the locking bolt 29 and the first waist-shaped hole 30 can limit the pressing rod 28.

[0087] Specifically, two supporting arms 32 are provided on the supporting plate 2. The supporting plate 2 has a material supporting station and an exiting station during the sliding process. When the supporting plate 2 slides to the material supporting station, the supporting arms 32 on the supporting plate 2 extend into the installation groove 9, and then the bus bar 7 placed in the installation groove 9 is supported by the supporting arms 32. When the supporting plate 2 slides to the exiting station, the supporting arms 32 withdraw from the installation groove 9 to release the support for the bus bar 7. Further specifically, a third handle is connected to the supporting plate 2, a pin hole 33 is provided on the supporting plate 2, and a ball plunger screw 34 is connected to the base 1. When the supporting plate 2 slides to the material supporting station, the ball plunger screw 34 is inserted into the pin hole 33 to limit the supporting plate 2 at the material supporting station.

[0088] As Figure 1 、 2 shown in Figures 4 and 5, the driving mechanism may include a driving ring 35, a handle 36 and a locking pin 37;

[0089] The driving ring 35 is rotatably connected in the base 1, and a plurality of driving grooves 38 are provided on the driving ring 35;

[0090] Driving pins 39 are respectively connected to the first wire pressing member 5 and the second wire pressing member 6, and the driving pins 39 are fitted in the corresponding driving grooves 38;

[0091] 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 member 5 and the second wire pressing member 6 to move radially respectively through the cooperation of the driving groove 38 and the driving pin 39;

[0092] A locking hole 40 is provided on the base 1, 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 member 5 and the second wire pressing member 6 move radially inward in place, so as to lock the position of the handle 36. After the position of the handle 36 is locked, the position of the driving ring 35 can be locked, and then the positions of the first wire pressing member 5 and the second wire pressing member 6 can be locked, so that the first wire pressing member 5 can keep pressing the first wire head 10 on the bus bar 7 and the second wire pressing member 6 can keep pressing the second wire head 11 on the star point copper bar 8. Among them, the locking pin 37 can be a indexing pin.

[0093] As Figure 4 、 5 shown in Figure 6, the first wire pressing member 5 may include a first sliding seat 41, a first pressing head 42, a first elastic member and a first abutting bolt;

[0094] The first sliding seat 41 is slidably connected to the base 1 along the radial direction of the base 1, and a transmission pin 39 provided on the first wire pressing member 5 is connected to the first sliding seat 41 so that when the driving ring 35 rotates, the first sliding seat 41 is driven to move radially;

[0095] 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, and the second waist-shaped hole cooperates with the transmission pin 39 connected to the first sliding seat 41. By the cooperation of the second waist-shaped hole and the corresponding transmission pin 39, the sliding stroke of the first pressing head 42 in the first sliding seat 41 can be limited, thereby preventing the first pressing head 42 from slipping off the first sliding seat 41;

[0096] The first abutting bolt is connected to the first sliding seat 41;

[0097] The first elastic member is installed in the first sliding seat 41 and 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 the in-place position, the first elastic member drives the first pressing head 42 to abut tightly against the first wire head 10 in the installation groove 9, and then presses the first wire head 10 against the bus bar 7 in the installation groove 9;

[0098] The second wire pressing member 6 may include a second sliding seat 43, a second pressing head 44, a second elastic member 45 and a second abutting bolt 46;

[0099] The second sliding seat 43 is slidably connected to the base 1 along the radial direction of the base 1, and a transmission pin 39 provided on the second wire pressing member 6 is connected to the second sliding seat 43 so that when the driving ring 35 rotates, the second sliding seat 43 is driven to move radially;

[0100] 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, and the third waist-shaped hole 47 cooperates with the transmission pin 39 connected to the second sliding seat 43. The supporting tooth 12 is connected to the second pressing head 44. By the cooperation of the third waist-shaped hole 47 and the corresponding transmission pin 39, the sliding stroke of the second pressing head 44 in the second sliding seat 43 can be limited, thereby preventing the second pressing head 44 from slipping off the second sliding seat 43; The second abutting bolt 46 is connected to the second sliding seat 43;

[0101] The second elastic member 45 is installed in the second sliding seat 43 and is located between the second indenter 44 and the second abutting bolt 46. The second elastic member 45 abuts against the second indenter 44 and the second abutting bolt 46 respectively. When the second sliding seat 43 is driven to move radially inward to the in-place position, the second elastic member 45 drives the second indenter 44 to tightly abut against the second wire end 11 in the installation groove 9, and the supporting teeth 12 pass through between the adjacent second wire ends 11 so as to support the star-point copper bar 8 placed in the installation groove 9. Specifically, when the handle 36 drives the driving ring 35 to rotate, the first sliding seat 41 and the second sliding seat 43 can be driven to move radially through the cooperation of the driving groove 38 and the transmission pin 39. When the first sliding seat 41 is driven to move radially inward to the in-place position, the first indenter 42 abuts against the first wire end 10, and the first elastic member can drive the first indenter 42 to tightly abut against the first wire end 10 through elastic force, thereby pressing the first wire end 10 against the bus bar 7. Similarly, when the second sliding seat 43 is driven to move radially inward to the in-place position, the second indenter 44 abuts against the second wire end 11, and the second elastic member 45 can drive the second indenter 44 to tightly abut against the second wire end 11 through elastic force, thereby pressing the second wire end 11 against the star-point copper bar 8. In this embodiment, the base 1 is provided with first sliding holes corresponding to the first sliding seats 41 one by one and second sliding holes corresponding to the second sliding seats 43 one by one. The first sliding seat 41 is slidably arranged in the corresponding first sliding hole in the radial direction, and the second sliding seat 43 is slidably arranged in the corresponding second sliding hole in the radial direction. Specifically, the first indenter 42 is provided with a first pressing groove, and a first protrusion is provided at the bottom of the first pressing groove. When the first indenter 42 tightly abuts against the first wire end 10, the first wire end 10 is clamped into the corresponding first pressing groove, and the first protrusion abuts against the corresponding first wire end 10. Further specifically, the second indenter 44 is provided with a second pressing groove 48, and a second protrusion 49 is provided at the bottom of the second pressing groove 48. When the second indenter 44 tightly abuts against the second wire end 11, the second wire end 11 is clamped into the corresponding second pressing groove 48, and the second protrusion 49 abuts against the corresponding second wire end 11.

[0102] As Figure 3 , 4 , shown in FIGS. 12, the base 1 may include an upper seat body 50, a middle seat body 51 and a lower seat body 52. The stator assembly 100 includes 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;

[0103] 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. The first pressing mechanism 3 and the second pressing mechanism 4 are both mounted and connected to the upper seat body 50.

[0104] The lower seat body 52 is connected to the lower end of the middle seat body 51. The lower seat body 52 is used for positioning and assembling on the upper end of the stator core 200. Through holes 53 for one end of the stator winding 300 to extend into are respectively provided in the lower seat body 52 and the middle seat body 51.

[0105] The first wire pressing member 5 and the second wire pressing member 6 are respectively slidably connected in the middle seat body 51 in the radial direction. The driving mechanism is connected to the middle seat body 51.

[0106] Specifically, after 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 holes 53 in the lower seat body 52 and the middle seat body 51, and the first wire head 10 and the second wire head 11 extend into the mounting groove 9 from bottom to top. Further specifically, two handles 54 are also connected to the middle seat body 51. The first sliding hole and the second sliding hole are both provided on the outer peripheral part of the middle seat body 51. The driving ring 35 in the driving mechanism is rotatably arranged in the middle seat body 51. The upper end of the stator winding 300 is also used to pass through the inside of the driving ring 35. The limiting abutting part 13 is provided in the upper seat body 50. The first pressing block 14 and the second pressing block 24 are both used for detachably mounting on the upper seat body 50. The first positioning hole 17, the second positioning hole 25, the positioning stop block 22, the third positioning pin 23 and the locking hole 40 are all provided on the upper seat body 50. The quick clamp, the fixed seat 27 in the second pressing component and the ball screw 34 are also connected to the upper seat body 50.

[0107] As Figure 3 shown, a plurality of circumferentially distributed positioning and assembling parts 55 are provided on the lower seat body 52. The positioning and assembling parts 55 are provided with a side positioning surface 56 for cooperating and abutting against the outer side wall of the stator core 200 and an end positioning surface 57 for abutting against the upper end surface of the stator core 200.

[0108] There are still card slots on the outer side wall of the stator core 200. A clip 58 for circumferentially positioning by being clamped in the card slots is connected to the positioning and assembling part 55. Specifically, by making the side positioning surface 56 cooperate with and abut against the outer side wall of the stator core 200, making the end positioning surface 57 abut against the upper end surface of the stator core 200, and making the clip 58 snap into the card slot, the lower seat body 52 can be positioned and assembled on the upper end part of the stator core 200.

[0109] In summary, first, position and assemble the base 1 onto the stator assembly 100. After the assembly is in place, the first lead 10 and the second lead 11 in the stator assembly 100 will extend upward into the installation groove 9. Then, slide the tray 2 into the installation groove 9, and drive the first wire pressing member 5 and the second wire pressing member 6 to move radially inward to the in-place position through the driving mechanism. Then, place the bus bar 7 and the star point copper bar 8 into the installation groove 9. At this time, the tray 2 can support the bus bar 7 and the supporting teeth 12 can support the star point copper bar 8. At the same time, the first wire pressing member 5 can press the first lead 10 in the installation groove 9 onto the bus bar 7, and the second wire pressing member 6 can press the second lead 11 in the installation groove 9 onto the star point copper bar 8. Then, press and fix the bus bar 7 through the first pressing mechanism 3 and press and fix the star point copper bar 8 through the second pressing mechanism 4, thereby realizing clamping and fixing the bus bar 7 and the star point copper bar 8 on the stator assembly 100 at the same time. Then, the bus bar 7 can be welded to the first lead 10 in the stator assembly 100 and the star point copper bar 8 can be welded to the second lead 11 in the stator assembly 100 by a welding device, achieving the welding of the bus bar 7 and the star point copper bar 8 in one clamping, greatly improving the efficiency of the welding process, and only requiring the use of a set of tooling, greatly saving the design and manufacturing cost of the tooling fixture. Further specifically, after the welding is completed, loosen the bus bar 7 by the first pressing mechanism 3, loosen the star point copper bar 8 by the second pressing mechanism 4, slide the tray 2 out of the installation groove 9 to release the support for the bus bar 7, and drive the first wire pressing member 5 and the second wire pressing member 6 to move radially outward to the in-place position through the driving mechanism, so that the first wire pressing member 5 is disengaged from abutting against the first lead 10, and the second wire pressing member 6 is disengaged from abutting against the second lead 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. Then, lift the base 1 upward. During the process of lifting the base 1, the bus bar 7 and the star point copper bar 8 will pass through the installation groove 9, and thus the base 1 can be removed from the stator assembly 100.

[0110] The specific embodiments described above further elaborate on the technical problems solved, technical solutions, and beneficial effects of 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 replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A tooling for welding a busbar and a star point copper bar, characterized in that, It includes 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); An installation groove (9) is provided in the base (1) for the bus bar (7) and the star point copper bar (8) to be placed and pass through. The base (1) is used for positioning and assembling on the stator assembly (100) so that the first wire end (10) and the second wire end (11) in the stator assembly (100) extend upward into the installation groove (9); The support plate (2) is slidably connected to the base (1). The support plate (2) is used to slide into the installation groove (9) to support the bus bar (7) placed in the installation groove (9) and to slide out of the installation groove (9) to release the support for the bus bar (7); The first wire pressing component (5) and the second wire pressing component (6) are respectively slidably connected to the base (1) in the radial direction, and a supporting tooth (12) is provided on the second wire pressing component (6); 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). 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 the in-place position so that the first wire pressing component (5) abuts against the first wire end (10) extending into the installation groove (9) and presses the first wire end (10) against the bus bar (7) placed in the installation groove (9), and the second wire pressing component (6) abuts against the second wire end (11) extending into the installation groove (9) and presses the second wire end (11) against the star point copper bar (8) placed in the installation groove (9), and the supporting tooth (12) supports the star point copper bar (8) placed in the installation groove (9). 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 the in-place position so that the first wire pressing component (5) disengages from the first wire end (10), the second wire pressing component (6) disengages from the second wire end (11), and the supporting tooth (12) exits from below the star point copper bar (8) to release the support for the star point copper bar (8); The first pressing mechanism (3) is connected to the base (1) and is used to press and fix the bus bar (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 bar (8) placed in the installation groove (9).

2. The tooling for welding the busbar and the star point copper bar according to claim 1, characterized in that, A limiting abutting portion (13) is provided on the base (1) for abutting against the inner ends of the bus bar (7) and the star point copper bar (8) to define the radial positions of the bus bar (7) and the star point copper bar (8).

3. The tooling for welding the bus bar and the star point copper bar according to claim 1, wherein, The first pressing mechanism (3) includes a first pressing block (14) and a first pressing component (15); The first pressing block (14) is used for detachably mounting on the base (1), and at least one pressing finger (16) for pressing the bus bar (7) in the mounting groove (9) is provided on the first pressing block (14); A first positioning hole (17) is provided on the base (1), a positioning groove (18) is provided on the bus bar (7), and a first positioning pin (19) for being inserted 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 being inserted into the positioning groove (18) to define the position of the bus bar (7) relative to the first pressing block (14) are provided at the bottom of the first pressing block (14); The first pressing component (15) is connected to the base (1) and is used for acting to press the first pressing block (14) mounted on the base (1), so that the pressing finger (16) on the first pressing block (14) presses the bus bar (7) in the mounting groove (9).

4. The tooling for welding the bus bar and the star point copper bar according to claim 1, characterized in that A positioning stop block (22) for abutting against one end of the star point copper bar (8) in the mounting groove (9) to define the circumferential position of the star point copper bar (8) is connected to the base (1); A third positioning pin (23) for being inserted into the opening groove (21) in the star point copper bar (8) to define the circumferential position of the star point copper bar (8) is connected to the base (1).

5. The tooling for welding the bus bar and the star point copper bar according to claim 1, characterized in that The second pressing mechanism (4) includes a second pressing block (24) and a second pressing component; The second pressing block (24) is used for detachably mounting on the base (1) and pressing the star point copper bar (8) in the mounting groove (9); A second positioning hole (25) is provided on the base (1), and 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) is provided at the bottom of the second pressing block (24); The second pressing component is connected to the base (1) and is used for acting to press the second pressing block (24) mounted on the base (1), so that the second pressing block (24) presses the star point copper bar (8) in the mounting groove (9).

6. The tooling for welding the busbar and the star point copper bar according to claim 5, characterized in that, The second pressing component includes a fixed seat (27), a pressing rod (28) and a locking bolt (29); The fixed seat (27) is connected to the base (1), and a sliding channel is provided in the fixed seat (27); The pressing rod (28) is slidably matched in the sliding channel, and the pressing rod (28) is used for sliding to press the upper end surface of the second pressing block (24) and for sliding to disengage from the upper end surface of the second pressing block (24); A first kidney-shaped hole (30) is provided in the pressure bar (28), a bolt hole (31) is provided on the fixed seat (27), and the locking bolt (29) passes through the bolt hole (31) and the first kidney-shaped hole (30) and is then threadedly connected to the base (1) to lock the fixed 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 includes a driving ring (35), a handle (36) and a locking pin (37); The driving ring (35) is rotatably connected in the base (1), and a plurality of driving grooves (38) are provided on the driving ring (35); Driving pins (39) are respectively connected to the first wire pressing member (5) and the second wire pressing member (6), and the driving pins (39) are fitted in the corresponding driving grooves (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 member (5) and the second wire pressing member (6) to move radially along by the cooperation of the driving groove (38) and the driving pin (39); A locking hole (40) is provided on the base (1), 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 member (5) and the second wire pressing member (6) move radially inward in place to lock the position of the handle (36).

8. The tooling for welding the bus bar and the star point copper bar according to claim 7, wherein The first wire pressing member (5) includes a first sliding seat (41), a first pressing head (42), a first elastic member and a first abutting bolt; The first sliding seat (41) is slidably connected to the base (1) along the radial direction of the base (1), and the driving pin (39) provided on the first wire pressing member (5) is connected to the first sliding seat (41) so that when the driving ring (35) rotates, the first sliding seat (41) is driven to move radially; The first pressing head (42) is slidably connected to the first sliding seat (41) along the radial direction of the base (1), a second kidney-shaped hole is provided in the first pressing head (42), and the second kidney-shaped hole is fitted with the driving pin (39) connected to the first sliding seat (41); The first abutting 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 in place, the first elastic member drives the first pressing head (42) to tightly press the first wire end (10) in the installation groove (9); The second wire pressing member (6) includes a second sliding seat (43), a second pressing head (44), a second elastic member (45) and a second abutting bolt (46); The second sliding seat (43) is slidably connected to the base (1) along the radial direction of the base (1). A transmission pin (39) provided on the second wire pressing member (6) is connected to the second sliding seat (43) so that when the driving ring (35) rotates, the second sliding seat (43) is driven to move radially. 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 holding teeth (12) are connected to the second pressing head (44). The second abutting bolt (46) is connected to the second sliding seat (43). The second elastic member (45) is installed in the second sliding seat (43) and is located between the second pressing head (44) and the second abutting bolt (46). The second elastic member (45) abuts against the second pressing head (44) and the second abutting bolt (46) respectively. When the second sliding seat (43) is driven to move radially inward to the in-place position, the second elastic member (45) drives the second pressing head (44) to tightly abut against the second wire end (11) in the installation groove (9), and the holding teeth (12) pass through between the adjacent second wire ends (11) so as to support the star point copper bar (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) includes an upper seat body (50), a middle seat body (51) and a lower seat body (52). The stator assembly (100) includes a stator core (200) and a stator winding (300). The first wire end (10) and the second wire end (11) are provided in the stator winding (300). The upper seat body (50) is connected to the upper end of the middle seat body (51). The installation groove (9) is provided in the upper seat body (50). The support plate (2) is slidably connected to the upper seat body (50). The first pressing mechanism (3) and the second pressing mechanism (4) are both installed 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 for positioning and assembling on the upper end of the stator core (200). Through holes (53) for one end of the stator winding (300) to extend into are respectively provided in the lower seat body (52) and the middle seat body (51). The first wire pressing member (5) and the second wire pressing member (6) are respectively slidably connected to the middle seat body (51) along the radial direction. The driving mechanism is connected to the middle seat body (51).

10. The tooling for welding a bus bar and a star point copper bar according to claim 9, wherein The lower seat body (52) is provided with a plurality of circumferentially distributed positioning and assembling parts (55) in sequence. The positioning and assembling parts (55) are provided with a side positioning surface (56) for cooperating and abutting against the outer side wall of the stator core (200) and an end positioning surface (57) for abutting against the upper end surface of the stator core (200). There are still clamping grooves on the outer side wall of the stator core (200), and a clip (58) for clamping and fitting in the clamping grooves for circumferential positioning is connected to the positioning and assembling part (55).

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