Welding fixture for stator assembly

Abstract

The utility model discloses a welding fixture for a stator assembly. The welding fixture comprises a mounting seat, a pressing part, a driving part and a supporting disc, wherein the end portion of the stator assembly is provided with at least one circle of thread residues to be welded, the multiple pressing components are sequentially arranged in the circumferential direction of the mounting base, and the pressing components are slidably connected to the mounting base in the radial direction of the mounting base; the pressing part is provided with an abutting part which protrudes downwards and is used for extending downwards to the outer side of the corresponding thread end, each circle of thread end corresponds to at least one supporting disc, each supporting disc is provided with a protruding ring part which protrudes downwards, and the protruding ring part on each supporting disc is used for extending downwards to the inner side of the corresponding circle of thread end. The multiple driving parts are connected to the mounting base, and the driving parts are connected with the corresponding pressing parts and used for driving the corresponding pressing parts to move in the radial direction of the mounting base. According to the utility model, the wire end of the X-pin structure can be clamped.

Description

Technical Field

[0001] The utility model relates to a welding fixture for a stator assembly. Background Art

[0002] At present, in the manufacturing process of a flat wire motor, after the stator winding is installed on the iron core, the wire ends at the end of the stator winding need to be welded together, and a fixture is required to clamp the wire ends during welding. Some existing fixtures can only be used to clamp wire ends with straight segments. For example, a tooling fixture for welding the connecting wires at the end of a 6-layer flat copper wire motor stator disclosed in a Chinese patent with the publication number CN211516521U needs to extend the straight segment of the wire end into the upper locking hole and the lower locking hole, and then displace the upper locking hole and the lower locking hole to clamp the wire end. However, at present, more and more flat wire motors in the industry adopt wire ends with an X-pin structure, and the wire ends with an X-pin structure have no straight segments, so the existing fixtures cannot clamp the wire ends with an X-pin structure. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a welding fixture for a stator assembly, which can clamp the wire ends with an X-pin structure.

[0004] To solve the above technical problem, the technical solution of the utility model is: a welding fixture for a stator assembly, comprising a mounting base, a pressing component, a driving component and a support disc;

[0005] The end of the stator assembly has at least one turn of wire ends to be welded,

[0006] A plurality of the pressing components are provided and arranged in sequence along the circumferential direction of the mounting base. The pressing components are slidably connected to the mounting base along the radial direction of the mounting base. The pressing components are provided with abutting portions that protrude downward and are used to extend downward to the outside of the corresponding wire ends;

[0007] Each turn of the wire ends respectively corresponds to at least one of the support discs. The support discs are provided with protruding ring portions that protrude downward. The protruding ring portions on the support discs are used to extend downward to the inside of the corresponding turn of wire ends and abut against the inner side walls of the corresponding turn of wire ends;

[0008] A plurality of the driving components are provided and connected to the mounting base. The driving components are connected to the corresponding pressing components and are used to drive the corresponding pressing components to move radially along the mounting base. When the abutting portion extends downward to the outside of the corresponding wire end and the convex ring portion on the support disk extends downward to the inside of the corresponding loop of wire ends, the driving components are used to drive the corresponding pressing components to move radially inward so that the abutting portion on the pressing component abuts against the outer side wall of the corresponding wire end, thereby pressing the corresponding wire end against the convex ring portion on the corresponding support disk.

[0009] Furthermore, the stator assembly has an iron core;

[0010] An outer positioning component for assembling and positioning with the iron core is connected to the mounting base;

[0011] A through hole is provided at the center of the mounting base, and the abutting portion is located in the through hole;

[0012] When the outer positioning component is assembled and positioned with the iron core, the wire end extends into the through hole and the abutting portion on the pressing component extends downward to the outside of the corresponding wire end.

[0013] Furthermore, a specific structure of the outer positioning component is provided. The outer positioning component includes a plurality of positioning blocks connected to the mounting base and arranged in sequence along the circumferential direction of the mounting base;

[0014] The positioning block is provided with a radial positioning portion for abutting against the outer side wall of the iron core and an axial positioning portion for abutting against the end wall of the iron core.

[0015] Furthermore, the stator assembly welding jig further includes an inner positioning component;

[0016] The inner positioning component is used for assembling and positioning with the iron core;

[0017] The support disk is used for detachably connecting to the inner positioning component. When the inner positioning component is assembled and positioned with the iron core, the convex ring portion of the support disk connected to the inner positioning component extends downward to the inside of the corresponding loop of wire ends and is used to abut against the inner side wall of the corresponding loop of wire ends.

[0018] Furthermore, a specific structure of the inner positioning component is provided. The inner positioning component is used for assembling and positioning with the inner circumferential portion of the iron core;

[0019] The lower end portion of the inner positioning component is provided with an insertion positioning portion for inserting into the iron core and abutting against the inner side wall of the iron core and a step positioning portion protruding radially outward and for abutting against the end face of the iron core.

[0020] Furthermore, at least one pressing plate corresponds to each turn of the wire ends. A flattening portion protruding downward is provided on the outer peripheral portion of the pressing plate. The flattening portion is used to abut against the top of the corresponding turn of wire ends to align the corresponding turn of wire ends.

[0021] Furthermore, flattening teeth corresponding one by one to the wire ends in the corresponding turn are provided in the flattening portion, and / or a handle is connected to the pressing plate.

[0022] Furthermore, the driving components and the pressing components correspond one by one. The driving component includes a driving screw, the driving screw is threadedly connected to the mounting base, and one end of the driving screw is rotatably connected to the corresponding pressing component.

[0023] Furthermore, a specific structure of the mounting base is provided. The mounting base includes a base body and a sealing plate.

[0024] Chute grooves corresponding one by one to the pressing components are provided on the end surface of the base body, and the pressing components are slidably arranged along the radial direction of the base body in the corresponding chute grooves.

[0025] The sealing plate is connected to the base body and is used to limit the pressing components in the corresponding chute grooves.

[0026] Furthermore, a specific structure of the pressing component is provided. The pressing component includes a pressing seat and a pressing head.

[0027] The pressing seat is slidably connected to the mounting base along the radial direction.

[0028] The pressing head is connected to the pressing seat.

[0029] The abutting portion is provided at one end of the pressing head close to the center of the mounting base.

[0030] After adopting the above technical solution, the wire heads all adopt the X-pin structure, so there is no straight line segment extending upward on the wire heads. Since the abutting portion on the pressing member protrudes downward, when the mounting base and the stator assembly are properly installed and fitted, the abutting portion on the pressing member can extend downward to the outside of the corresponding wire head; and because the convex ring portion on the support disk also protrudes downward, the convex ring portion on the support disk can extend downward to the inside of a corresponding circle of wire heads and abut against the inner side wall of the corresponding circle of wire heads. Then, the driving member is used to drive the pressing member to move radially inward, so that the abutting portion on the pressing member abuts against the outer side wall of the corresponding wire head, and further presses the corresponding wire head against the convex ring portion on the corresponding support disk, thereby being able to clamp the wire head. Therefore, the downward-protruding abutting portion and the downward-protruding convex ring portion can clamp the wire head without a straight line segment, that is, the wire head of the X-pin structure can be clamped. Among them, when the wire head is clamped, welding can be performed on the wire head. After welding is completed, the driving member drives the corresponding pressing member to move radially outward, so that the abutting portion on the pressing member releases the corresponding wire head. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is an exploded assembly view of the welding fixture for the stator assembly of the present utility model;

[0032] Figure 2 is a cross-sectional view of the welding fixture for the stator assembly of the present utility model installed on the stator assembly;

[0033] Figure 3 is Figure 2 a partial detailed view;

[0034] Figure 4 is a perspective view of the welding fixture for the stator assembly of the present utility model installed on the stator assembly;

[0035] Figure 5 is a schematic structural view of the pressing member and the support disk of the present utility model when clamping the wire head;

[0036] Figure 6 is a cross-sectional view of the support disk of the present utility model when abutting against the inner side wall of the wire head;

[0037] Figure 7 is a schematic structural view of the pressing member and the driving member of the present utility model connected to the mounting base;

[0038] Figure 8 is a schematic structural view of the pressure plate of the present utility model abutting against the top of a corresponding circle of wire heads;

[0039] Figure 9 is a cross-sectional view of the pressure plate of the present utility model. Detailed implementation mode

[0040] In order to make the content of the present utility model easier to be clearly understood, the following further detailed description of the present utility model is given according to specific embodiments in conjunction with the accompanying drawings.

[0041] As Figures 1 - 7 shown, a welding fixture for a stator assembly includes a mounting base 2, a pressing member 3, a driving member 4 and a support disc 5;

[0042] The end of the stator assembly 100 has at least one turn of wire ends 1 to be welded;

[0043] A plurality of the pressing members 3 are provided and arranged in sequence along the circumferential direction of the mounting base 2. The pressing members 3 are slidably connected to the mounting base 2 in the radial direction of the mounting base 2. An abutting portion 6 which protrudes downward and is used for extending downward to the outside of the corresponding wire end 1 is provided on the pressing members 3;

[0044] Each turn of the wire ends 1 respectively corresponds to at least one of the support discs 5. A convex ring portion 7 which protrudes downward is provided on the support discs 5. The convex ring portion 7 on the support discs 5 is used for extending downward to the inside of the corresponding turn of wire ends 1 and abutting against the inner side wall of the corresponding turn of wire ends 1;

[0045] A plurality of the driving members 4 are provided and connected to the mounting base 2. The driving members 4 are connected to the corresponding pressing members 3 and are used for driving the corresponding pressing members 3 to move in the radial direction of the mounting base 2. When the abutting portion 6 extends downward to the outside of the corresponding wire end 1 and the convex ring portion 7 on the support disc 5 extends downward to the inside of the corresponding turn of wire ends 1, the driving members 4 are used for driving the corresponding pressing members 3 to move inward in the radial direction so that the abutting portion 6 on the pressing members 3 abuts against the outer side wall of the corresponding wire end 1, thereby pressing the corresponding wire end 1 against the convex ring portion 7 on the corresponding support disc 5.

[0046] In this embodiment, as Figure 5 、 8 shown, the wire ends 1 all adopt an X-pin structure, so there is no straight line segment extending upward on the wire ends 1. As Figure 3 、 5As shown, since the abutting part 6 on the pressing component 3 protrudes downward, when the mounting base 2 and the stator assembly 100 are properly installed and fitted, the abutting part 6 on the pressing component 3 can extend downward to the outside of the corresponding wire head 1; also because the convex ring part 7 on the support disk 5 also protrudes downward, the convex ring part 7 on the support disk 5 can extend downward to the inside of the corresponding circle of wire heads 1 and abut against the inner side wall of the corresponding circle of wire heads 1. Then, the driving component 4 drives the pressing component 3 to move radially inward, so that the abutting part 6 on the pressing component 3 abuts against the outer side wall of the corresponding wire head 1, and further presses the corresponding wire head 1 against the convex ring part 7 on the corresponding support disk 5, thereby clamping the wire head 1. Therefore, the downward protruding abutting part 6 and the downward protruding convex ring part 7 can clamp the wire head 1 without a straight segment, that is, the wire head 1 with an X-pin structure can be clamped.

[0047] Specifically, when the wire head 1 is clamped, welding can be performed on the wire head 1. After welding is completed, the driving component 4 drives the corresponding pressing component 3 to move radially outward, so that the abutting part 6 on the pressing component 3 releases the corresponding wire head 1.

[0048] In this embodiment, the end of the stator assembly 100 has 4 circles of the wire heads 1, which are the first circle of wire heads 1, the second circle of wire heads 1, the third circle of wire heads 1, and the fourth circle of wire heads 1 in sequence from the inside to the outside. Each circle of wire heads 1 corresponds to a support disk 5 respectively. Therefore, a total of 4 support disks 5 are provided. The support disk 5 corresponding to the first circle of wire heads 1 has the smallest diameter, and the support disk 5 corresponding to the fourth circle of wire heads 1 has the largest diameter. Specifically, when it is necessary to clamp the first circle of wire heads 1, first, the driving component 4 drives the pressing component 3 to move radially inward so that the position of the abutting part 6 matches the diameter of the first circle of wire heads 1. Then, the mounting base 2 and the stator assembly 100 are assembled in place. At this time, the abutting part 6 extends downward to the outside of the first circle of wire heads 1. Then, the support disk 5 corresponding to the first circle of wire heads 1 is installed in place so that the convex ring part 7 on the support disk 5 extends downward to the inside of the first circle of wire heads 1 and abuts against the inner side wall of the first circle of wire heads 1. Then, the driving component 4 drives the pressing component 3 to move radially inward, so that the abutting part 6 on the pressing component 3 presses the wire head 1 against the convex ring part 7 on the corresponding support disk 5. At this time, the first circle of wire heads 1 is clamped and welding can be performed on the first circle of wire heads 1. After welding is completed, the driving component 4 drives the corresponding pressing component 3 to move radially outward, so that the abutting part 6 on the pressing component 3 releases the corresponding wire head 1. Then, the mounting base 2 is removed from the stator assembly 100 and the support disk 5 corresponding to the first circle of wire heads 1 is taken away.

[0049] When it is necessary to clamp the second turn of the wire head 1, first, the driving component 4 drives the pressing component 3 to move radially so that the position of the abutting portion 6 matches the diameter of the second turn of the wire head 1. Then, the mounting base 2 is assembled with the stator assembly 100 in place. At this time, the abutting portion 6 extends downward to the outside of the second turn of the wire head 1. Then, the support disk 5 corresponding to the second turn of the wire head 1 is installed in place so that the convex ring portion 7 on the support disk 5 extends downward to the inside of the second turn of the wire head 1 and abuts against the inner wall of the second turn of the wire head 1. Then, the driving component 4 drives the pressing component 3 to move radially inward, and further, the abutting portion 6 on the pressing component 3 presses the wire head 1 against the convex ring portion 7 on the corresponding support disk 5. At this time, the second turn of the wire head 1 is clamped and the second turn of the wire head 1 can be welded. After the welding is completed, the driving component 4 drives the corresponding pressing component 3 to move radially outward, and further, the abutting portion 6 on the pressing component 3 releases the corresponding wire head 1. Then, the mounting base 2 is removed from the stator assembly 100 and the support disk 5 corresponding to the second turn of the wire head 1 is taken away. And so on, referring to the clamping steps of the second turn of the wire head 1, the third turn of the wire head 1 and the fourth turn of the wire head 1 can be clamped respectively.

[0050] In this embodiment, the number of wire heads 1 in each turn corresponds one-to-one to the number of the pressing components 3, and the wire head 1 is composed of the overlapping ends of two flat copper wires.

[0051] As Figures 1 - 7 shown, the stator assembly 100 has an iron core 8, a stator winding 9 is connected to the iron core 8, and the end of the stator winding 9 has the wire head 1 to be welded;

[0052] An outer positioning component for assembling and positioning with the iron core 8 is connected to the mounting base 2;

[0053] A through hole 10 is provided at the center of the mounting base 2, and the abutting portion 6 is located in the through hole 10;

[0054] When the outer positioning component is assembled and positioned with the iron core 8, the wire head 1 extends into the through hole 10 and the abutting portion 6 on the pressing component 3 extends downward to the outside of the corresponding wire head 1.

[0055] As Figures 1 - 4 shown, the outer positioning component may include a plurality of positioning blocks 11 connected to the mounting base 2 and arranged in sequence along the circumferential direction of the mounting base 2;

[0056] The positioning block 11 is provided with a radial positioning portion 12 for abutting against the outer side wall of the iron core 8 and an axial positioning portion 13 for abutting against the end wall of the iron core 8; specifically, in use, the radial positioning portion 12 on the positioning block 11 is abutted against the outer side wall of the iron core 8 and the axial positioning portion 13 is abutted against the end wall of the iron core 8. At this time, the positioning block 11 and the iron core 8 are assembled in place, and then the mounting seat 2 is installed in place. At this time, the wire head 1 extends into the through hole 10, and the abutting portion 6 on the pressing member 3 extends downward to the outside of the corresponding wire head 1.

[0057] As Figures 1 - 6 shown, the welding fixture for the stator assembly may further include an inner positioning member 14;

[0058] The inner positioning member 14 is used for positioning in cooperation with the iron core 8;

[0059] The support disk 5 is used for detachably connecting to the inner positioning member 14. When the inner positioning member 14 is positioned in cooperation with the iron core 8, the convex ring portion 7 of the support disk 5 connected to the inner positioning member 14 extends downward to the inner side of a corresponding circle of wire heads 1 and is used for abutting against the inner side wall of the corresponding circle of wire heads 1.

[0060] As Figures 1 - 6 shown, the inner positioning member 14 is used for positioning in cooperation with the inner peripheral portion of the iron core 8;

[0061] The lower end portion of the inner positioning member 14 is provided with an extending positioning portion 15 for extending into the iron core 8 and abutting against the inner side wall of the iron core 8 and a step positioning portion 16 that protrudes radially outward and is used for abutting against the end face of the iron core 8.

[0062] Specifically, during the process of clamping the first circle of wire heads 1, the support disk 5 corresponding to the first circle of wire heads 1 can be connected to the inner positioning member 14, and then the extending positioning portion 15 of the inner positioning member 14 is abutted against the inner side wall of the iron core 8 and the step positioning portion 16 is abutted against the end face of the iron core 8. At this time, the inner positioning member 14 and the iron core 8 are completed in cooperative positioning. At this time, the convex ring portion 7 of the support disk 5 connected to the inner positioning member 14 extends downward to the inner side of the first circle of wire heads 1 and is used for abutting against the inner side wall of the first circle of wire heads 1.

[0063] More specifically, during the process of clamping the second turn of the wire head 1, first remove the support disk 5 corresponding to the first turn of the wire head 1 from the inner positioning member 14, install and connect the support disk 5 corresponding to the second turn of the wire head 1 to the inner positioning member 14, and then make the extending positioning portion 15 of the inner positioning member 14 abut against the inner side wall of the iron core 8 and make the stepped positioning portion 16 abut against the end face of the iron core 8. At this time, the inner positioning member 14 and the iron core 8 are completed with cooperative positioning. At this time, the convex ring portion 7 of the support disk 5 connected to the inner positioning member 14 extends downward to the inner side of the second turn of the wire head 1 and is used to abut against the inner side wall of the second turn of the wire head 1.

[0064] More specifically, during the process of clamping the third turn of the wire head 1, first remove the support disk 5 corresponding to the second turn of the wire head 1 from the inner positioning member 14, install and connect the support disk 5 corresponding to the third turn of the wire head 1 to the inner positioning member 14, and then make the extending positioning portion 15 of the inner positioning member 14 abut against the inner side wall of the iron core 8 and make the stepped positioning portion 16 abut against the end face of the iron core 8. At this time, the inner positioning member 14 and the iron core 8 are completed with cooperative positioning. At this time, the convex ring portion 7 of the support disk 5 connected to the inner positioning member 14 extends downward to the inner side of the third turn of the wire head 1 and is used to abut against the inner side wall of the third turn of the wire head 1.

[0065] More specifically, during the process of clamping the fourth turn of the wire head 1, first remove the support disk 5 corresponding to the third turn of the wire head 1 from the inner positioning member 14, install and connect the support disk 5 corresponding to the fourth turn of the wire head 1 to the inner positioning member 14, and then make the extending positioning portion 15 of the inner positioning member 14 abut against the inner side wall of the iron core 8 and make the stepped positioning portion 16 abut against the end face of the iron core 8. At this time, the inner positioning member 14 and the iron core 8 are completed with cooperative positioning. At this time, the convex ring portion 7 of the support disk 5 connected to the inner positioning member 14 extends downward to the inner side of the fourth turn of the wire head 1 and is used to abut against the inner side wall of the fourth turn of the wire head 1.

[0066] Wherein, the support disk 5 can be detachably connected to the inner positioning member 14 through fastening bolts.

[0067] As Figures 1 - 4 shown in FIGS. 8 and 9, each turn of the wire head 1 respectively corresponds to at least one pressing disk 17. The outer peripheral portion of the pressing disk 17 is provided with a downward protruding flattening portion 18, and the flattening portion 18 is used to abut against the top of the corresponding turn of the wire head 1 to flatten the corresponding turn of the wire head 1.

[0068] In this embodiment, each turn of the wire head 1 respectively corresponds to one pressing disk 17. Therefore, a total of 4 pressing disks 17 are provided. The pressing disk 17 corresponding to the first turn of the wire head 1 has the smallest diameter, and the pressing disk 17 corresponding to the fourth turn of the wire head 1 has the largest diameter.

[0069] Specifically, the usage method of the pressing plate 17 is as follows. During the process of clamping the first loop of wire 1, when the abutting portion 6 extends downward to the outside of the first loop of wire 1 and the convex ring portion 7 on the supporting plate 5 corresponding to the first loop of wire 1 extends downward to the inside of the first loop of wire 1, the flattening portion 18 on the pressing plate 17 corresponding to the first loop of wire 1 abuts against the top of the first loop of wire 1 and presses down the pressing plate 17 to flatten the first loop of wire 1. Then, the pressing plate 17 corresponding to the first loop of wire 1 is removed. Then, the driving component 4 drives the pressing component 3 to move radially inward so that the abutting portion 6 presses the first loop of wire 1 against the convex ring portion 7 on the corresponding supporting plate 5. Referring to the above steps, during the process of clamping the second loop of wire 1, the pressing plate 17 corresponding to the second loop of wire 1 is used to flatten the second loop of wire 1. During the process of clamping the third loop of wire 1, the pressing plate 17 corresponding to the third loop of wire 1 is used to flatten the third loop of wire 1. During the process of clamping the fourth loop of wire 1, the pressing plate 17 corresponding to the fourth loop of wire 1 is used to flatten the fourth loop of wire 1.

[0070] As Figures 1 - 4 shown in FIGS. 8 and 9, the flattening portion 18 is provided with flattening teeth 19 corresponding one by one to the wires 1 in the corresponding loop, and a handle 20 is connected to the pressing plate 17.

[0071] As Figures 1 - 5 shown in FIGS. 7, the driving components 4 and the pressing components 3 are in one-to-one correspondence. The driving component 4 includes a driving screw, the driving screw is threadedly connected to the mounting base 2, one end of the driving screw is rotatably connected to the corresponding pressing component 3, and a cap portion 21 is provided at the other end of the driving screw so as to drive the corresponding pressing component 3 to move radially along the mounting base 2 when the driving screw is rotated; in this embodiment, a T-shaped groove is provided in the pressing component 3, and a T-shaped head for mating with the T-shaped groove is provided on the driving screw, so that the driving screw is rotatably connected to the pressing component 3.

[0072] As Figures 1 - 4 shown in FIGS. 7, the mounting base 2 may include a base body 22 and a sealing plate 23;

[0073] A sliding groove 24 corresponding to the pressing component 3 is provided on the end surface of the base body 22, and the pressing component 3 is slidably arranged in the corresponding sliding groove 24 along the radial direction of the base body 22;

[0074] The sealing plate 23 is connected to the base body 22 and is used to limit the pressing component 3 in the corresponding sliding groove 24; in this embodiment, the driving screw is threadedly connected to the base body 22.

[0075] As Figure 3 、 5, as shown in FIGS. 7, the pressing member 3 may include a pressing base 25 and a pressing head 26;

[0076] The pressing base 25 is slidably connected to the mounting base 2 in the radial direction;

[0077] The pressing head 26 is connected to the pressing base 25;

[0078] The abutting portion 6 is provided at one end of the pressing head 26 close to the center of the mounting base 2; in this embodiment, the pressing base 25 is slidably disposed in the corresponding sliding groove 24, the sealing plate 23 is used to limit the pressing base 25 in the corresponding sliding groove 24, and the T-shaped groove is provided in the pressing base 25.

[0079] In summary, the wire heads 1 all adopt the X-pin structure, so there is no straight line segment extending upward on the wire heads 1. Since the abutting portion 6 on the pressing member 3 protrudes downward, when the mounting base 2 and the stator assembly 100 are installed and fitted in place, the abutting portion 6 on the pressing member 3 can extend downward to the outside of the corresponding wire head 1; and because the convex ring portion 7 on the support disk 5 also protrudes downward, the convex ring portion 7 on the support disk 5 can extend downward to the inside of the corresponding circle of wire heads 1 and abut against the inner side wall of the corresponding circle of wire heads 1, and then the driving member 4 is used to drive the pressing member 3 to move radially inward, so that the abutting portion 6 on the pressing member 3 abuts against the outer side wall of the corresponding wire head 1, and further presses the corresponding wire head 1 against the convex ring portion 7 on the corresponding support disk 5, thereby being able to clamp the wire head 1. Therefore, the wire head 1 without a straight line segment can be clamped by the downwardly protruding abutting portion 6 and the downwardly protruding convex ring portion 7, that is, the wire head 1 with the X-pin structure can be clamped. Among them, when the wire head 1 is clamped, the wire head 1 can be welded, and after the welding is completed, the driving member 4 drives the corresponding pressing member 3 to move radially outward, so that the abutting portion 6 on the pressing member 3 releases the corresponding wire head 1.

[0080] In the above specific embodiments, the technical problems solved, the technical solutions and the beneficial effects of the present invention are further described in detail. It should be understood that the above are only specific embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A welding fixture for a stator assembly, wherein the end of the stator assembly (100) has at least one turn of wire ends (1) to be welded, characterized in that, It includes a mounting base (2), a pressing member (3), a driving member (4) and a support disk (5); A plurality of the pressing members (3) are provided and arranged in sequence along the circumferential direction of the mounting base (2). The pressing members (3) are slidably connected to the mounting base (2) along the radial direction of the mounting base (2). An abutting portion (6) which protrudes downward and is used for extending downward to the outside of the corresponding wire end (1) is provided on the pressing member (3); At least one support disk (5) corresponds to each circle of the wire ends (1). A convex ring portion (7) which protrudes downward is provided on the support disk (5). The convex ring portion (7) on the support disk (5) is used for extending downward to the inside of the corresponding circle of wire ends (1) and abutting against the inner side wall of the corresponding circle of wire ends (1); A plurality of the driving members (4) are provided and connected to the mounting base (2). The driving members (4) are connected to the corresponding pressing members (3) and are used for driving the corresponding pressing members (3) to move along the radial direction of the mounting base (2). When the abutting portion (6) extends downward to the outside of the corresponding wire end (1) and the convex ring portion (7) on the support disk (5) extends downward to the inside of the corresponding circle of wire ends (1), the driving members (4) are used for driving the corresponding pressing members (3) to move inward along the radial direction so that the abutting portion (6) on the pressing member (3) abuts against the outer side wall of the corresponding wire end (1), thereby pressing the corresponding wire end (1) against the convex ring portion (7) on the corresponding support disk (5).

2. The welding jig for a stator assembly according to claim 1, wherein A iron core (8) is provided in the stator assembly (100); An outer positioning member for assembling and positioning with the iron core (8) is connected to the mounting base (2); A through hole (10) is provided at the center of the mounting base (2). The abutting portion (6) is located in the through hole (10); When the outer positioning member is assembled and positioned with the iron core (8), the wire end (1) extends into the through hole (10) and the abutting portion (6) on the pressing member (3) extends downward to the outside of the corresponding wire end (1).

3. The welding jig for the stator assembly according to claim 2, characterized in that, The outer positioning member includes a plurality of positioning blocks (11) which are connected to the mounting base (2) and are arranged in sequence along the circumferential direction of the mounting base (2); A radial positioning portion (12) for abutting against the outer side wall of the iron core (8) and an axial positioning portion (13) for abutting against the end wall of the iron core (8) are provided on the positioning block (11).

4. The welding jig for the stator assembly according to claim 1, wherein, It further includes an inner positioning member (14); A iron core (8) is provided in the stator assembly (100). The inner positioning member (14) is used for cooperating with the iron core (8) for positioning; The support disk (5) is used for detachably connecting to the inner positioning member (14). When the inner positioning member (14) is assembled and positioned with the iron core (8), the convex ring portion (7) of the support disk (5) connected to the inner positioning member (14) extends downward to the inside of the corresponding circle of wire ends (1) and is used for abutting against the inner side wall of the corresponding circle of wire ends (1).

5. The welding fixture for a stator assembly according to claim 4, wherein the inner positioning member (14) is used for positioning in cooperation with the inner peripheral portion of the iron core (8); at the lower end of the inner positioning member (14), there is provided an insertion positioning portion (15) for inserting into the iron core (8) and abutting against the inner side wall of the iron core (8), and a step positioning portion (16) protruding radially outward and for abutting against the end face of the iron core (8).

6. The welding fixture for the stator assembly according to claim 1, wherein For each turn of the wire heads (1), there is at least one pressing disc (17) respectively. On the outer peripheral portion of the pressing disc (17), there is a downward protruding flattening portion (18), and the flattening portion (18) is used for abutting against the top of the corresponding turn of wire heads (1) to flatten the corresponding turn of wire heads (1).

7. The welding fixture for the stator assembly according to claim 6, wherein, In the flattening portion (18), there are flattening teeth (19) corresponding one by one to the wire heads (1) in the corresponding turn, and / or a handle (20) is connected to the pressing disc (17).

8. The welding jig for the stator assembly according to claim 1, wherein, The driving member (4) corresponds to the pressing member (3) one by one. The driving member (4) includes a driving screw, the driving screw is threadedly connected to the mounting seat (2), and one end of the driving screw is rotatably connected to the corresponding pressing member (3).

9. The welding jig for the stator assembly according to claim 1, wherein, The mounting seat (2) includes a seat body (22) and a sealing plate (23); On the end face of the seat body (22), there are sliding grooves (24) corresponding to the pressing members (3) one by one, and the pressing members (3) are slidably arranged along the radial direction of the seat body (22) in the corresponding sliding grooves (24); The sealing plate (23) is connected to the seat body (22) and is used for restricting the pressing members (3) in the corresponding sliding grooves (24).

10. The welding fixture for a stator assembly according to claim 1, wherein the pressing member (3) includes a pressing seat (25) and a pressing head (26); the pressing seat (25) is slidably connected to the mounting seat (2) along the radial direction; the pressing head (26) is connected to the pressing seat (25); The abutting portion (6) is provided at one end of the pressing head (26) close to the center of the mounting seat (2).

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