A welding fixture for end plate and lamination of a stator core

Abstract

The utility model provides a kind of welding fixture of stator core's end plate and punching sheet, including fixture body and positioning component being set on fixture body, positioning component is several and is evenly arranged on fixture body in circumferential direction, when the iron core end plate, iron core punching sheet is stacked on fixture body, iron core end plate, iron core punching sheet is positioned by positioning component and is stacked on fixture body and makes iron core end plate stator slot and iron core punching sheet stator slot one-to-one correspondence.The utility model provides a kind of welding fixture of stator core's end plate and punching sheet, guarantees the accurate stacking of iron core end plate and iron core punching sheet, guarantees the normal winding embedding wire of stator core and motor performance.

Description

Technical Field

[0001] This utility model belongs to the technical field of motor stator core production, specifically relating to a welding fixture for the end plate and laminations of a stator core. Background Technology

[0002] The stator core is one of the key components of a permanent magnet synchronous motor. It is made by stacking and welding several stator laminations. To prevent warping inside the stator core and to avoid deformation and springing apart between the stator core laminations, end plates or pressure rings need to be welded to both ends of the stator core. During the manufacturing process of the stator core, the end plates and laminations need to be precisely stacked and welded together. The problem is that in traditional processes, the stacking of the end plates and laminations is done manually. Due to the skill level of the operators, the stator slots of the end plates and laminations are prone to misalignment, which affects the normal winding and coiling of the stator core and the performance of the motor.

[0003] Therefore, further improvements are needed. Utility Model Content

[0004] The purpose of this utility model is to overcome at least one of the shortcomings of the prior art and to provide a welding fixture for the end plate and laminations of the stator core, which ensures the precise stacking of the end plate and laminations of the core, and ensures the normal winding and winding of the stator core and the performance of the motor.

[0005] To achieve the above objectives, the technical solution provided by this utility model embodiment is as follows:

[0006] A welding fixture for stator core end plates and laminations includes a fixture body and positioning components disposed on the fixture body. The positioning components are a plurality of components and are evenly distributed circumferentially on the fixture body. When the core end plates and core laminations are stacked on the fixture body, the core end plates and core laminations are positioned on the fixture body by the positioning components, and the stator slots of the core end plates correspond one-to-one with the stator slots of the core laminations.

[0007] The positioning component includes a first positioning post and a second positioning post, which are arranged sequentially from top to bottom and their central axes coincide. The diameter of the first positioning post matches the radial dimension of the end of the stator slot of the iron core lamination, and the diameter of the second positioning post matches the radial dimension of the end of the stator slot of the iron core end plate. When the iron core end plate and the iron core lamination are stacked on the fixture body, the second positioning post corresponds to the stator slot of the iron core end plate and extends into the stator slot of the iron core end plate, and the first positioning post corresponds to the stator slot of the iron core lamination and extends into the stator slot of the iron core lamination.

[0008] When the radial dimension of the stator slot end of the core end plate is greater than the radial dimension of the stator slot end of the core lamination, the diameter of the first positioning post is smaller than the diameter of the second positioning post, and the core end plate and the core lamination are stacked on the fixture body from top to bottom.

[0009] The positioning component is detachably mounted on the fixture body. A first mounting structure is provided between the positioning component and the fixture body. The first mounting structure includes a first mounting part disposed on the positioning component and a first mounting hole disposed on the fixture body and matching the first mounting part. The first mounting part is located at the bottom end of the second positioning post. The first mounting hole penetrates the end face of the fixture body. When the first mounting part is inserted into the first mounting hole and the two are interference-fitted, the positioning component is mounted on the fixture body.

[0010] The positioning component also includes a limiting part, which is located at the bottom end of the first mounting part. When the positioning component is inserted into the first mounting hole from bottom to top, the limiting part abuts against the lower end surface of the fixture body to limit the positioning component to be mounted on the fixture body.

[0011] The fixture body is provided with a limiting hole that matches the limiting part. The limiting hole is located on the lower end face of the fixture body and its central axis coincides with the central axis of the first mounting hole. When the positioning component is inserted into the first mounting hole from bottom to top, the limiting part is embedded in the limiting hole so that the bottom surface of the positioning component is horizontally aligned with the lower end face of the fixture body.

[0012] The fixture body includes a first support part and a second support part. The first support part is located at the center of the fixture body. The second support part consists of several parts and is evenly arranged circumferentially on the outer edge of the first support part. The number of positioning components corresponds to the number of the second support parts, and the distance between each positioning component and the axis of the fixture body is equal.

[0013] The clamp body also includes support feet to maintain a certain distance between the clamp body and the placement plane. The support feet are disposed on the lower end surface of the second support part and their number corresponds to the number of the second support part.

[0014] The welding fixture also includes a clamping component for pressing the iron core end plate and iron core lamination onto the fixture body, and the clamping component is detachably mounted on the fixture body;

[0015] A second mounting structure is provided between the clamping component and the fixture body. The second mounting structure includes a second mounting post disposed on the clamping component and a second mounting hole disposed on the fixture body and corresponding to the second mounting post. The second mounting post is located on the bottom surface of the clamping component, and the second mounting hole is located in the middle of the fixture body. When the second mounting post is inserted into the second mounting hole, the clamping component is mounted on the fixture body and the iron core end plate and iron core lamination are clamped.

[0016] The clamping component can be locked onto the fixture body. A locking structure is provided between the clamping component and the positioning component. The locking structure includes a locking groove on the clamping component and a locking part on the positioning component that corresponds to the locking groove. The clamping component is installed on the fixture body. When the locking groove is screwed into the locking part, the clamping component is locked onto the fixture body.

[0017] The beneficial effects of this utility model are as follows:

[0018] This utility model employs a welding fixture with the above-mentioned technical solution, which includes a fixture body and a positioning component. When the iron core end plate and iron core laminations are stacked on the fixture body, the positioning component positions the iron core end plate and iron core laminations on the fixture body and ensures that the stator slots of the iron core end plate and the stator slots of the iron core laminations correspond one-to-one. This ensures that the stator slots of the iron core end plate and the stator slots of the iron core laminations are accurately aligned and avoids misalignment. This guarantees the accurate stacking of the iron core end plate and the iron core laminations, ensuring normal winding of the stator core and the performance of the motor. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a welding fixture according to an embodiment of the present invention.

[0020] Figure 2 This is an exploded view of a welding fixture according to an embodiment of the present invention.

[0021] Figure 3 This is an exploded view of a welding fixture according to an embodiment of the present invention.

[0022] Figure 4 This is a schematic diagram of the positioning component according to an embodiment of the present invention.

[0023] Figure 5 This is a schematic diagram of the clamping of a welding fixture according to an embodiment of the present invention.

[0024] Figure 6 This is a schematic diagram of the clamping of a welding fixture according to an embodiment of the present invention.

[0025] Figure 7 This is a schematic diagram of the clamping of a welding fixture according to an embodiment of the present invention.

[0026] Figure 8 This is a schematic diagram of the clamping of a welding fixture according to an embodiment of the present invention. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0028] See Figure 1-4 The welding fixture for the end plate and laminations of the stator core includes a fixture body 1 and a positioning component 2. In this embodiment, the vertical projection of the fixture body 1 is cross-shaped and includes a first support part 13 and a second support part 14. There is one first support part 13 located at the center of the fixture body 1, and four second support parts 14 are evenly distributed circumferentially around the outer edge of the first support part 13, making the structural layout of the welding fixture more uniform and avoiding uneven force during welding. The vertical projection of the positioning component 2 is circular and is set on the second support part 14 of the fixture body 1. The number of positioning components 2 corresponds to the number of second support parts 14, preferably four, and the distance between each positioning component 2 and the axis of the fixture body 1 is equal, so as to ensure that the end plate 3 and the lamination 4 of the core can be positioned at the center of the fixture body 1. The positioning component 2 includes a first positioning post 21 and a second positioning post 22. The first positioning post 21 and the second positioning post 22 are both set on the upper end face of the fixture body 1. Two positioning posts 22 are arranged sequentially from top to bottom, with their central axes coinciding. The diameter of the first positioning post 21 matches the radial dimension of the end of the stator slot of the core lamination 4, and the diameter of the second positioning post 22 matches the radial dimension of the end of the stator slot of the core end plate 3. When the core end plate 3 and the core lamination 4 are stacked on the fixture body 1, the four first positioning posts 21 correspond to the four stator slots of the core lamination 4 and extend into the corresponding stator slots of the core lamination 4, and the four second positioning posts 22... The positioning column 22 corresponds to the four stator slots of the core end plates 3 and extends into the corresponding stator slots of the core end plates 3, so that the core end plates 3 and the core laminations 4 are positioned at the center of the fixture body 1 and the stator slots of the core end plates 3 and the stator slots of the core laminations 4 correspond one-to-one, so that the stator slots of the core end plates 3 and the stator slots of the core laminations 4 can be precisely aligned, avoiding human error that could cause misalignment between the stator slots of the core end plates 3 and the stator slots of the core laminations 4, thus ensuring the normal winding and coiling of the stator core and the performance of the motor.

[0029] Alternatively, as a simple replacement for an equivalent technical solution, the vertical projection of the fixture body 1 can be in the shape of a herringbone, a cross, or the like, which will be understood by those skilled in the art.

[0030] Furthermore, in this embodiment, when the radial dimension of the stator slot end of the core end plate 3 is greater than the radial dimension of the stator slot end of the core lamination 4, the diameter of the first positioning post 21 is smaller than the diameter of the second positioning post 22. The core end plate 3 and the core lamination 4 are stacked sequentially on the fixture body 1 from top to bottom. The core end plate 3 and the core lamination 4 can be fixed by the first positioning post 21 and the second positioning post 22 of different diameters, respectively. Through the above technical solution, the first positioning post 21 and the second positioning post 22 of different diameters can avoid incorrect installation of the core end plate 3 and the core lamination 4 on the welding fixture, which can be understood by those skilled in the art.

[0031] Furthermore, the positioning component 2 is detachably mounted on the fixture body 1. In this embodiment, a first mounting structure is provided between the positioning component 2 and the fixture body 1. Specifically, the first mounting structure includes a first mounting part 23 and a first mounting hole 11. The first mounting part 23 is disposed on the positioning component 2 and located at the bottom end of the second positioning post part 22. The first mounting hole 11 is disposed on the fixture body 1 and penetrates the end face of the fixture body 1. The first mounting hole 11 matches the first mounting part 23, that is, the diameter of the first mounting hole 11 is slightly smaller than the diameter of the first mounting part 23. When the first mounting part 23 is inserted into the first mounting hole 11 and the two are in an interference fit, the positioning component 2 is mounted on the fixture body 1. Through the above technical solution, the positioning component 2 can be detachably mounted on the fixture body 1, so that the fixture body 1 can replace positioning components 2 of different sizes, which can be adapted to the production of multiple stators. The interference fit between the first mounting part 23 and the first mounting hole 11 can prevent the positioning component 2 from moving during welding vibration, which will be understood by those skilled in the art.

[0032] Furthermore, the positioning component 2 also includes a limiting part 24. Specifically, in this embodiment, the limiting part 24 is located at the bottom end of the first mounting part 23. When the positioning component 2 is inserted into the first mounting hole 11 from bottom to top, the limiting part 24 abuts against the lower end face of the clamp body 1, so that the positioning component 2 is limited and installed on the clamp body 1. Through the above technical solution, the limiting part 24 can prevent the positioning component 2 from loosening upward, ensure that the positioning component 2 does not shift when pressed upward against the clamp body 1, and ensure that all positioning components 2 set on the clamp body 1 have the same height, which can be understood by those skilled in the art.

[0033] Furthermore, the fixture body 1 is provided with a limiting hole 12. Specifically, in this embodiment, the limiting hole 12 matches the limiting part 24, that is, the diameter of the limiting hole 12 is slightly larger than the diameter of the limiting part 24. The limiting hole 12 is provided on the lower end face of the fixture body 1 and its central axis coincides with the central axis of the first mounting hole 11. When the positioning component 2 is inserted into the first mounting hole 11 from bottom to top, the limiting part 24 is embedded in the limiting hole 12, so that the bottom surface of the positioning component 2 is horizontally aligned with the lower end face of the fixture body 1, making the welding fixture more aesthetically pleasing. This is understood by those skilled in the art.

[0034] Furthermore, the fixture body 1 also includes support feet 15. Specifically, in this embodiment, the support feet 15 are detachably installed on the lower end face of the second support part 14, which facilitates the replacement of the support feet 15 for the welding fixture and reduces the maintenance cost of the welding fixture. The number of support feet 15 corresponding to the second support part 14 is preferably four. Through the above technical solution, a certain distance is maintained between the fixture body 1 and the placement plane. The operator can move the welding fixture through the space between the fixture body 1 and the placement plane, and can avoid dirt on the placement plane from soiling the iron core end plate 3 and the iron core lamination 4. This is understood by those skilled in the art.

[0035] Furthermore, the welding fixture also includes a clamping component 5, which is detachably mounted on the fixture body 1. Specifically, in this embodiment, a second mounting structure is provided between the clamping component 5 and the fixture body 1. The second mounting structure includes a second mounting post 51 and a second mounting hole 16. The second mounting post 51 is mounted on the clamping component 5 and located on the bottom surface of the clamping component 5. The second mounting hole 16 is a blind hole and is mounted on the fixture body 1 and located in the middle of the fixture body 1. The second mounting hole 16 and the second mounting post 51 are correspondingly arranged. When the second mounting post 51 is inserted into the second mounting hole 16 from top to bottom, the clamping component 5 is mounted on the fixture body 1 and the core end plate 3 and the core lamination 4 are clamped. This is understood by those skilled in the art.

[0036] Furthermore, the clamping component 5 can be locked onto the fixture body 1. Specifically, in this embodiment, a locking structure is provided between the clamping component 5 and the positioning component 2. The locking structure includes a locking groove 52 and a locking part 25. The locking groove 52 is provided on the clamping component 5 and its opening is located on the side of the clamping component 5. The locking part 25 is provided on the positioning component 2 and is located at the top of the first positioning post 21, and its horizontal projection is T-shaped. When the clamping component 5 is installed on the fixture body 1, the locking groove 52 is screwed into the locking part 25 by rotating the clamping component 5, so that the clamping component 5 is locked onto the fixture body 1. Through the above technical solution, the welding fixture can still maintain the clamping force under welding vibration, ensuring the welding reliability of the welding fixture, which will be understood by those skilled in the art.

[0037] See Figure 5-8The working principle of the welding fixture for the stator core end plates and laminations in this technical solution is as follows: First, the core end plates 3 are placed on the fixture body 1, and the second positioning posts 22 of the four positioning components 2 extend into the corresponding stator slots of the four core end plates 3, so that the core end plates 3 are positioned on the welding fixture; Second, the core laminations 4 are placed on the fixture body 1, and the first positioning posts 21 of the four positioning components 2 extend into the corresponding stator slots of the four core laminations 4, so that the core end plates 3 are positioned on the welding fixture; The core lamination 4 is positioned on the welding fixture, and the stator slots of the core lamination 4 correspond one-to-one with the stator slots of the core end plate 3. Third, the clamping component 5 is installed on the fixture body 1, so that the clamping component 5 presses the core lamination 4 and the core end plate 3 onto the fixture body 1. Fourth, the clamping component 5 is rotated so that the locking groove 52 is screwed into the locking part 25, so that the clamping component 5 is locked onto the fixture body 1. The welding fixture, together with the welding device, welds the core end plate 3 and the core lamination 4.

[0038] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A welding fixture for the end plate and laminations of a stator core, characterized in that, The fixture includes a fixture body (1) and a positioning component (2) disposed on the fixture body (1). The positioning component (2) consists of several components and is evenly distributed circumferentially on the end face of the fixture body (1). When the iron core end plate (3) and iron core lamination (4) are stacked on the fixture body (1), the iron core end plate (3) and iron core lamination (4) are positioned on the fixture body (1) by the positioning component (2) and the stator slot of the iron core end plate (3) corresponds one-to-one with the stator slot of the iron core lamination (4).

2. The welding fixture for the end plate and lamination of the stator core according to claim 1, characterized in that, The positioning component (2) includes a first positioning post (21) and a second positioning post (22). The first positioning post (21) and the second positioning post (22) are arranged sequentially from top to bottom and their central axes coincide. The diameter of the first positioning post (21) matches the radial dimension of the end of the stator slot of the iron core lamination (4). The diameter of the second positioning post (22) matches the radial dimension of the end of the stator slot of the iron core end plate (3). When the iron core end plate (3) and the iron core lamination (4) are stacked on the fixture body (1), the second positioning post (22) corresponds to the stator slot of the iron core end plate (3) and extends into the stator slot of the iron core end plate (3), and the first positioning post (21) corresponds to the stator slot of the iron core lamination (4) and extends into the stator slot of the iron core lamination (4).

3. The welding fixture for the end plate and lamination of the stator core according to claim 2, characterized in that, When the radial dimension of the stator slot end of the core end plate (3) is greater than the radial dimension of the stator slot end of the core lamination (4), the diameter of the first positioning post (21) is smaller than the diameter of the second positioning post (22), and the core end plate (3) and the core lamination (4) are stacked on the fixture body (1) from top to bottom.

4. The welding fixture for the end plate and lamination of the stator core according to claim 2, characterized in that, The positioning component (2) is detachably mounted on the fixture body (1). A first mounting structure is provided between the positioning component (2) and the fixture body (1). The first mounting structure includes a first mounting part (23) mounted on the positioning component (2) and a first mounting hole (11) mounted on the fixture body (1) and matching the first mounting part (23). The first mounting part (23) is located at the bottom end of the second positioning post (22). The first mounting hole (11) penetrates the end face of the fixture body (1). When the first mounting part (23) is inserted into the first mounting hole (11) and the two are interference-fitted, the positioning component (2) is mounted on the fixture body (1).

5. The welding fixture for the end plate and lamination of the stator core according to claim 4, characterized in that, The positioning component (2) also includes a limiting part (24), which is located at the bottom end of the first mounting part (23). When the positioning component (2) is inserted into the first mounting hole (11) from bottom to top, the limiting part (24) abuts against the lower end surface of the clamp body (1) so that the positioning component (2) is limited and installed on the clamp body (1).

6. The welding fixture for the end plate and lamination of the stator core according to claim 5, characterized in that, The fixture body (1) is provided with a limiting hole (12) that matches the limiting part (24). The limiting hole (12) is located on the lower end face of the fixture body (1) and its central axis coincides with the central axis of the first mounting hole (11). When the positioning part (2) is inserted into the first mounting hole (11) from bottom to top, the limiting part (24) is embedded in the limiting hole (12) so that the bottom surface of the positioning part (2) is horizontally aligned with the lower end face of the fixture body (1).

7. The welding fixture for the end plate and lamination of the stator core according to claim 1, characterized in that, The clamp body (1) includes a first support part (13) and a second support part (14). The first support part (13) is located at the center of the clamp body (1). The second support part (14) consists of several parts and is evenly arranged circumferentially on the outer edge of the first support part (13). The number of positioning parts (2) corresponds to the number of the second support parts (14) and the distance between each positioning part (2) and the axis of the clamp body (1) is equal.

8. The welding fixture for the end plate and lamination of the stator core according to claim 7, characterized in that, The clamp body (1) also includes support feet (15) to maintain a certain distance between the clamp body (1) and the placement plane. The support feet (15) are disposed on the lower end surface of the second support part (14) and their number corresponds to the second support part (14).

9. The welding fixture for the end plate and lamination of the stator core according to claim 1, characterized in that, The welding fixture also includes a clamping component (5) for pressing the iron core end plate (3) and the iron core punch (4) onto the fixture body (1). The clamping component (5) is detachably mounted on the fixture body (1). A second mounting structure is provided between the clamping component (5) and the fixture body (1). The second mounting structure includes a second mounting post (51) disposed on the clamping component (5) and a second mounting hole (16) disposed on the fixture body (1) and corresponding to the second mounting post (51). The second mounting post (51) is located on the bottom surface of the clamping component (5), and the second mounting hole (16) is located in the middle of the fixture body (1). When the second mounting post (51) is inserted into the second mounting hole (16), the clamping component (5) is mounted on the fixture body (1) and the iron core end plate (3) and the iron core punch (4) are clamped.

10. The welding fixture for the end plate and lamination of the stator core according to claim 9, characterized in that, The clamping component (5) can be locked onto the fixture body (1). A locking structure is provided between the clamping component (5) and the positioning component (2). The locking structure includes a locking groove (52) provided on the clamping component (5) and a locking part (25) provided on the positioning component (2) and corresponding to the locking groove (52). The clamping component (5) is installed on the fixture body (1). When the locking groove (52) is screwed into the locking part (25), the clamping component (5) is locked onto the fixture body (1).

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