Segmented welding device suitable for stator core

Abstract

The invention belongs to the technical field of stator welding, and particularly discloses a segmented welding device suitable for a stator iron core, the segmented welding device comprises a segmented clamping switching mechanism, a sequential transmission mechanism and a turnover locking mechanism, and the sequential transmission mechanism and the turnover locking mechanism are symmetrically arranged on the two sides of the segmented clamping switching mechanism. The segmented clamping switching mechanism is creatively provided, and the clamping position of the T-shaped block iron core can be switched through overall overturning of the switching clamping blocks, so that segmented welding is achieved; the sequential transmission mechanism can automatically achieve the technical effects that the clamping position is converted firstly and then the angle of the workpiece is turned over through the design of the rotating resistance when the driving motor is started.

Description

Technical Field

[0001] The invention belongs to the technical field of stator welding, and in particular relates to a segmented welding device suitable for a stator core. Background Art

[0002] Winding coils on T-blocks and welding them together to form an integrated stator core is a common method for producing motor cores. The welding area is generally located at the side seam of the product. However, since the T-blocks are loose before welding, they must be clamped and fixed during the welding process. However, due to the conflict between the clamping position and the welding position, segmented welding is often necessary. The existing welding device has cumbersome steps for clamping, flipping, and adjusting the angle of the workpiece. For the working condition of re-clamping after disassembly, the workpiece needs to be re-positioned after the second clamping, which is not only cumbersome but also affects the accuracy. Summary of the Invention

[0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a segmented welding device suitable for the stator core. In order to simplify the structure and control logic, the present invention creatively proposes a segmented clamping conversion mechanism. By converting the overall flipping of the clamping block, the clamping position of the T-block core can be converted to achieve segmented welding; the sequential transmission mechanism can automatically achieve the technical effect of first converting the clamping position and then flipping the workpiece angle by designing the size of the rotation resistance when starting the drive motor; not only that, through the electromagnetic push plate that is switched on and off at the same time as the welding gun, the axial relative position of the conical wheel and the conical hole wheel can be automatically controlled according to the welding preparation state, thereby achieving the technical effect of automatically locking the conical wheel during welding (to ensure stability) and automatically unlocking the conical wheel during non-welding (allowing flipping and direction change).

[0004] The technical solution adopted by the present invention is as follows: The present invention proposes a segmented welding device suitable for a stator core, comprising a segmented clamping conversion mechanism, a sequential transmission mechanism and a flip locking mechanism, wherein the sequential transmission mechanism and the flip locking mechanism are symmetrically arranged on both sides of the segmented clamping conversion mechanism, the segmented clamping conversion mechanism comprises a conversion bracket, a conversion clamping block, a lifting assembly and a conversion transmission assembly, the conversion transmission assembly is arranged on the sequential transmission mechanism, the conversion bracket is arranged on the conversion transmission assembly, the conversion clamping blocks are evenly distributed in an annular shape, and the number of the conversion clamping blocks and the T-block core is equal; The conversion clamp block is provided with an arc portion, which is in rolling contact with the T-block core, and two ends of the arc portion are symmetrically provided with straight portions, which are in close contact with the T-block core; The conversion bracket is provided with cylindrical parts evenly distributed in an annular pattern, and the conversion clamping block is provided with an annular part, and the annular part is rotatably provided on the cylindrical part.

[0005] Furthermore, by switching the rotation of the clamping block, the clamping position of the T-shaped block core can be switched, thereby achieving the technical purpose of clamping and welding the assembled T-shaped block core in sections.

[0006] Preferably, a fan-shaped gear portion is provided on the outer side of the annular portion, and the lifting assembly includes an annular rack and a rack mounting ring. The annular rack is evenly fixed to the inner wall of the rack mounting ring in an annular shape, and the annular rack and the gear portion are engaged for transmission.

[0007] The lifting and lowering of the rack mounting ring can drive the lifting and lowering of all the annular racks as a whole, thereby driving all the conversion clamps to move synchronously, achieving the technical effect of overall clamping and position conversion of the stator composed of T-block iron cores.

[0008] Furthermore, the conversion transmission assembly includes a central rotating shaft and an ear-type bracket, the ear-type bracket is symmetrically fixed to the outside of the conversion bracket, the central rotating shaft is rotatably arranged in the ear-type bracket, the sequential transmission mechanism includes a conical wheel and a conical hole wheel, the conical wheel is fixed to the ear-type bracket, the outer ring of the conical wheel is evenly distributed with a protrusion 1, the inner ring of the conical hole wheel is evenly distributed with a protrusion 2, and the central rotating shaft, the conical wheel and the conical hole wheel are coaxially arranged.

[0009] When the conical wheel and the tapered hole wheel rotate, the deformation resistance of the protrusion one and the protrusion two is related to the axial relative position of the conical wheel and the tapered hole wheel. Therefore, by adjusting the axial relative position of the two, the conical wheel and the tapered hole wheel can be locked and unlocked; when the conical wheel is locked, the conversion bracket cannot rotate at all, and when the conical wheel is unlocked, it can perform conditional rotation movement.

[0010] Preferably, guide sliding holes are symmetrically provided on the ear-type bracket, and guide posts are symmetrically provided on the rack mounting ring, and the guide posts are engaged and slidably provided in the guide sliding holes.

[0011] Furthermore, the conversion transmission assembly also includes a lifting rack and a lifting gear. The lifting rack is fixed to the rack mounting ring, and the lifting gear is fixed to the central rotating shaft. The lifting rack and the lifting gear are engaged and transmitted. Through the transmission between the lifting rack and the lifting gear, the rack mounting ring can be lifted and lowered relative to the conversion bracket.

[0012] Preferably, it also includes a disc base plate, and the sequential transmission mechanism also includes a flip support assembly, the flip support assembly includes a fixed connecting piece and a flip support frame, the flip support frame is fixed to the disc base plate, the fixed connecting piece is rotatably arranged in the flip support frame, and the two ends of the flip support frame are respectively fixed to the conical wheel and the ear-type bracket.

[0013] Under the support of the flipping support assembly, the flipping of the ear bracket and the conical wheel is relatively independent of the rotation of the central shaft. The two can only rotate together under specific conditions. Through the joint rotation and relative rotation of the ear bracket and the conical wheel, the clamping conversion and flipping direction of the workpiece can be controlled respectively.

[0014] Furthermore, the flip locking mechanism includes an axial locking assembly, which includes a bearing bracket and an electromagnetic push plate. The bearing bracket is fixed to the bottom plate of the disc, and the electromagnetic push plate is arranged between the bearing bracket and the tapered hole wheel. The electromagnetic push plate can extend and increase its own thickness when powered on, thereby pushing the tapered hole wheel to slide toward the conical wheel.

[0015] Through the synchronous switch of the electromagnetic push plate and the welding gun, the axial relative position of the tapered wheel and the tapered hole wheel can be automatically controlled according to the welding preparation state, thereby achieving the technical effect of automatically locking the tapered wheel during welding (to ensure stability) and automatically unlocking the tapered wheel during non-welding (to allow flipping and changing direction).

[0016] Preferably, the flip locking mechanism further includes a spindle bearing and a drive motor, wherein the drive motor is arranged on the bottom plate of the disc, the output shaft of the drive motor is connected to the central rotating shaft, and the spindle bearing is arranged between the bearing bracket and the central rotating shaft.

[0017] As a further preference of the present invention, it also includes a welding gun, which is located on an external clamping device. The electromagnetic push plate and the welding gun are controlled by the same switch, which can achieve the technical effect of automatically completing the flip locking during the welding process.

[0018] The beneficial effects achieved by the present invention using the above structure are as follows: (1) By rotating the conversion clamp, the clamping position of the T-block core can be changed, thereby achieving the technical purpose of segmented clamping and segmented welding of the assembled T-block core.

[0019] (2) By raising and lowering the rack mounting ring, all the ring-mounted racks can be driven to rise and fall as a whole, thereby driving all the conversion clamps to move synchronously, achieving the technical effect of overall clamping and position conversion of the stator composed of T-block iron cores.

[0020] (3) When the conical wheel and the tapered hole wheel rotate, the deformation resistance of the protrusion 1 and the protrusion 2 is related to the axial relative position of the conical wheel and the tapered hole wheel. Therefore, by adjusting the axial relative position of the two, the conical wheel and the tapered hole wheel can be locked and unlocked; when the conical wheel is locked, the conversion bracket cannot rotate at all, and when the conical wheel is unlocked, it can perform conditional rotation.

[0021] (4) Under the support of the flip support assembly, the flipping of the ear bracket and the conical wheel is relatively independent of the rotation of the central shaft. The two can rotate together only under specific conditions. Through the joint rotation and relative rotation of the ear bracket and the conical wheel, the clamping conversion and flipping direction of the workpiece can be controlled respectively.

[0022] (5) Through the synchronous switch of the electromagnetic push plate and the welding gun, the axial relative position of the conical wheel and the tapered hole wheel can be automatically controlled according to the welding preparation state, thereby achieving the technical effect of automatically locking the conical wheel during welding (to ensure stability) and automatically unlocking the conical wheel during non-welding (to allow flipping and changing direction). BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional diagram of a segmented welding device suitable for a stator core proposed by the present invention; Figure 2 This is a front view of a segmented welding device suitable for a stator core proposed by the present invention; Figure 3 A top view of a segmented welding device suitable for a stator core proposed by the present invention; Figure 4 for Figure 2 A cross-sectional view along the cutting line AA; Figure 5 for Figure 2 A cross-sectional view along the cutting line BB; Figure 6 This is a schematic diagram of a half-section structure of a segmented welding device suitable for a stator core proposed by the present invention; Figure 7 for Figure 4 A partial enlarged view of point Ⅰ in the middle; Figure 8 for Figure 4 A partial enlarged view of the middle II; Figure 9 for Figure 6 A partial enlarged view of point III in the middle; Figure 10 for Figure 5 A partial enlarged view of point IV in the middle.

[0024] Among them, 1. Segmented clamping conversion mechanism, 2. Sequential transmission mechanism, 3. Flip locking mechanism, 4. Disc bottom plate, 5. Welding gun, 6. T-block core, 7. Conversion bracket, 8. Conversion clamp, 9. Lifting assembly, 10. Conversion transmission assembly, 11. Cylindrical part, 12. Arc part, 13. Straight part, 14. Annular part, 15. Gear part, 16. Ring rack, 17. Rack mounting ring, 18. Lifting rack, 19. Lifting gear, 20. Center shaft, 21. Ear bracket, 22. Guide column, 23. Guide slide hole, 24. Conical wheel, 25. Conical hole wheel, 26. Flip support assembly, 27. Protrusion one, 28. Protrusion two, 29. Fixed connector, 30. Flip support bracket, 31. Axial locking assembly, 32. Spindle bearing, 33. Drive motor, 34. Bearing bracket, 35. Electromagnetic push plate.

[0025] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0028] like Figures 1 to 10 As shown, the present invention proposes a segmented welding device suitable for a stator core, comprising a segmented clamping conversion mechanism 1, a sequential transmission mechanism 2, and a flip locking mechanism 3. The sequential transmission mechanism 2 and the flip locking mechanism 3 are symmetrically arranged on both sides of the segmented clamping conversion mechanism 1. The segmented clamping conversion mechanism 1 comprises a conversion bracket 7, a conversion clamping block 8, a lifting assembly 9, and a conversion transmission assembly 10. The conversion transmission assembly 10 is arranged on the sequential transmission mechanism 2, the conversion bracket 7 is arranged on the conversion transmission assembly 10, the conversion clamping blocks 8 are evenly distributed in an annular shape, and the number of conversion clamping blocks 8 and the T-block core 6 are equal; The conversion clamp 8 is provided with an arc portion 12, which is in rolling contact with the T-block core 6. The two ends of the arc portion 12 are symmetrically provided with straight portions 13, which are in close contact with the T-block core 6. The conversion bracket 7 is provided with cylindrical portions 11 evenly distributed in an annular shape. The conversion clamping block 8 is provided with an annular portion 14 , which is rotatably provided on the cylindrical portion 11 .

[0029] By rotating the switching clamp 8 , the clamping position of the T-shaped block core 6 can be switched, thereby achieving the technical purpose of clamping and welding the assembled T-shaped block core 6 in sections.

[0030] A fan-shaped gear portion 15 is provided on the outside of the annular portion 14. The lifting assembly 9 includes an annular rack 16 and a rack mounting ring 17. The annular rack 16 is evenly fixed to the inner wall of the rack mounting ring 17 in an annular shape. The annular rack 16 and the gear portion 15 are engaged for transmission.

[0031] The lifting and lowering of the rack mounting ring 17 can drive all the annular racks 16 to lift as a whole, thereby driving all the conversion clamps 8 to move synchronously, achieving the technical effect of overall clamping and position conversion of the stator composed of the T-block iron core 6.

[0032] The conversion transmission assembly 10 includes a central rotating shaft 20 and an ear-type bracket 21. The ear-type bracket 21 is symmetrically fixed to the outside of the conversion bracket 7. The central rotating shaft 20 is rotatably arranged in the ear-type bracket 21. The sequential transmission mechanism 2 includes a conical wheel 24 and a conical hole wheel 25. The conical wheel 24 is fixed to the ear-type bracket 21. The outer ring of the conical wheel 24 is evenly distributed with a protrusion 1 27, and the inner ring of the conical hole wheel 25 is evenly distributed with a protrusion 2 28. The central rotating shaft 20, the conical wheel 24 and the conical hole wheel 25 are coaxially arranged.

[0033] When the conical wheel 24 and the conical hole wheel 25 rotate, the deformation resistance of the protrusion 1 27 and the protrusion 2 28 is related to the axial relative position of the conical wheel 24 and the conical hole wheel 25. Therefore, by adjusting the axial relative position of the two, the conical wheel 24 and the conical hole wheel 25 can be locked and unlocked; when the conical wheel 24 is locked, the conversion bracket 7 cannot rotate at all, and when the conical wheel 24 is unlocked, it can perform conditional rotation.

[0034] The flip locking mechanism 3 includes an axial locking assembly 31, which includes a bearing bracket 34 and an electromagnetic push plate 35. The bearing bracket 34 is fixed to the disc base plate 4, and the electromagnetic push plate 35 is arranged between the bearing bracket 34 and the tapered hole wheel 25. When powered on, the electromagnetic push plate 35 can extend and increase its own thickness, thereby pushing the tapered hole wheel 25 to slide toward the conical wheel 24.

[0035] By synchronously switching the electromagnetic push plate 35 and the welding gun 5, the axial relative positions of the conical wheel 24 and the tapered hole wheel 25 can be automatically controlled according to the welding preparation state, thereby achieving the technical effect of automatically locking the conical wheel 24 during welding (to ensure stability) and automatically unlocking the conical wheel 24 during non-welding (to allow flipping and reversing).

[0036] The ear-type bracket 21 is symmetrically provided with guide sliding holes 23 , and the rack mounting ring 17 is symmetrically provided with guide posts 22 . The guide posts 22 are engaged and slidably provided in the guide sliding holes 23 .

[0037] The conversion transmission assembly 10 also includes a lifting rack 18 and a lifting gear 19. The lifting rack 18 is fixed to the rack mounting ring 17, and the lifting gear 19 is fixed to the central rotating shaft 20. The lifting rack 18 and the lifting gear 19 are engaged in transmission. Through the transmission between the lifting rack 18 and the lifting gear 19, the rack mounting ring 17 can be raised and lowered relative to the conversion bracket 7.

[0038] This solution also includes a disc base plate 4, and the sequential transmission mechanism 2 also includes a flip support assembly 26. The flip support assembly 26 includes a fixed connection member 29 and a flip support frame 30. The flip support frame 30 is fixedly connected to the disc base plate 4, and the fixed connection member 29 is rotatably arranged in the flip support frame 30. The two ends of the flip support frame 30 are respectively fixedly connected to the conical wheel 24 and the ear-type bracket 21.

[0039] Under the support of the flipping support assembly 26, the flipping of the ear-type bracket 21 and the conical wheel 24 is relatively independent of the rotation of the central rotating shaft 20. The two can rotate together only under specific conditions. Through the common rotation and relative rotation of the ear-type bracket 21 and the conical wheel 24, the clamping conversion and flipping direction of the workpiece can be controlled respectively.

[0040] The flip locking mechanism 3 also includes a spindle bearing 32 and a drive motor 33. The drive motor 33 is arranged on the disc base plate 4. The output shaft of the drive motor 33 is connected to the central rotating shaft 20. The spindle bearing 32 is arranged between the bearing bracket 34 and the central rotating shaft 20.

[0041] This solution also includes a welding gun 5, which is located on an external clamping device. The electromagnetic push plate 35 and the welding gun 5 are controlled by the same switch, which can achieve the technical effect of automatically completing the flip locking during the welding process.

[0042] During specific use, the user first needs to place the T-block core 6 spliced ​​in the previous process into the middle of the conversion clamp 8. When placing it in, the conversion clamp 8 contacts the T-block core 6 through the arc portion 12. At this time, it is roughly line contact and the friction resistance is small. Therefore, the resistance that needs to be overcome when placing the T-block core 6 is also small; since there are convex and concave parts on both sides of the T-block core 6 for splicing, the spliced ​​T-block core 6 will not cause positional deviation as long as it is clamped and tightened from the outside.

[0043] Then, the drive motor 33 is started and rotates the central shaft 20. In the initial state, the axial offset between the tapered wheel 24 and the tapered hole wheel 25 is relatively large. However, when the tapered wheel 24 rotates, the protrusion 1 27 and the protrusion 2 28 will still squeeze each other. Therefore, at this time, the tapered wheel 24 has a certain rotational resistance, while the rotation of the central shaft 20 is free. Therefore, the central shaft 20 descends with the lifting rack 18 through the lifting gear 19. At the same time, the rack mounting ring 17 and the annular rack 16 both descend vertically under the guidance of the guide column 22. During this process, the conversion clamp 8 will be twisted at a certain angle through the meshing transmission of the annular rack 16 and the gear part 15. During this process, the T-block core 6 is lifted upward until the straight portion 13 located below the arc-shaped portion 12 is completely in contact with the T-block core 6. At this time, there is surface contact between the straight portion 13 and the T-block core 6, and the firmness of the clamping is guaranteed.

[0044] At this time, the clamping position is located at the lower half of the T-block core 6, the upper half is open, and the upper half of the conversion clamp 8 is also avoided by its own outward expansion, leaving sufficient space for the welding operation of the welding gun 5.

[0045] Then, the switch of the welding gun 5 is turned on, and at the same time, the electromagnetic push plate 35 is energized and pushes the tapered hole wheel 25 to slide toward the tapered wheel 24, so that the protrusion 1 27 and the protrusion 2 28 contact and press. At this time, the relative positions of the tapered wheel 24 and the tapered hole wheel 25 are locked, and since the tapered hole wheel 25 cannot rotate, the tapered wheel 24 and the ear-type bracket 21 cannot rotate either. During the welding process, the central shaft 20 can also be kept stationary by driving the motor 33.

[0046] The welding gun 5 is moved by the external clamping jaws, and when the welding gun 5 contacts the T-block core 6, the joint of the welding gun 5 can be welded. If the welding gun 5 can only move in a vertical plane, the T-block core 6 can be rotated by rotating the disc bottom plate 4, thereby periodically changing the welding angle.

[0047] After the welding of the upper half of the T-block core 6 is completed, the switch of the welding gun 5 needs to be turned off first. At this time, the electromagnetic push plate 35 will reset the tapered hole wheel 25 to unlock the tapered wheel 24. Then the drive motor 33 is started in the reverse direction and rotates the central shaft 20 and the lifting gear 19 in the opposite direction. At this time, since the tapered wheel 24 still has a certain rotation resistance, the lifting rack 18 and the lifting assembly 9 will slide upward as a whole, and at the same time rotate the conversion clamp 8; When the conversion clamp 8 rotates, the T-block core 6 will be moved downward through the rolling contact between the arc-shaped portion 12 and the T-block core 6, until the straight portion 13 located above the arc-shaped portion 12 is completely in contact with the T-block core 6. At this time, there is surface contact between the straight portion 13 and the T-block core 6 again, and the firmness of the clamping is guaranteed.

[0048] Continue to rotate the central shaft 20. Since the rack mounting ring 17 and the ear-type bracket 21 can no longer slide relative to each other, the segmented clamping conversion mechanism 1 will flip as a whole following the rotation of the conical wheel 24. When the conical wheel 24 rotates, the protrusion 1 27 and the protrusion 2 28 will be squeezed and elastically deformed. The driving force of the drive motor 33 is sufficient to overcome the deformation resistance. After the segmented clamping conversion mechanism 1 flips over half a circle as a whole, the T-block core 6 is transformed into a state of clamping at the bottom and opening at the top to be welded. At this time, the welding gun 5 can be turned on again to weld the other half of the T-block core 6.

[0049] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0050] The present invention and its embodiments are described above. This description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by this and, without departing from the purpose of the present invention, designs structures and embodiments similar to this technical solution without inventiveness, they shall fall within the scope of protection of the present invention.

Claims

1. A segmented welding device suitable for stator core, characterized by: The invention comprises a segmented clamping conversion mechanism (1), a sequential transmission mechanism (2) and a flip locking mechanism (3), wherein the sequential transmission mechanism (2) and the flip locking mechanism (3) are symmetrically arranged on both sides of the segmented clamping conversion mechanism (1), and the segmented clamping conversion mechanism (1) comprises a conversion bracket (7), a conversion clamping block (8), a lifting assembly (9) and a conversion transmission assembly (10), wherein the conversion transmission assembly (10) is arranged on the sequential transmission mechanism (2), the conversion bracket (7) is arranged on the conversion transmission assembly (10), the conversion clamping blocks (8) are evenly distributed in an annular shape, and the number of the conversion clamping blocks (8) and the number of the T-block iron cores (6) are equal; The conversion clamp (8) is provided with an arc portion (12), the arc portion (12) and the T-shaped block core (6) are in rolling contact, and straight portions (13) are symmetrically provided at both ends of the arc portion (12), and the straight portions (13) are in close contact with the T-shaped block core (6); The conversion bracket (7) is provided with cylindrical portions (11) evenly distributed in an annular pattern, and the conversion clamping block (8) is provided with an annular portion (14), and the annular portion (14) is rotatably arranged on the cylindrical portion (11).

2. A segmented welding device for a stator core according to claim 1, characterized in that: A fan-shaped gear portion (15) is provided on the outer side of the annular portion (14). The lifting assembly (9) includes an annular rack (16) and a rack mounting ring (17). The annular rack (16) is evenly fixed to the inner wall of the rack mounting ring (17) in an annular shape. The annular rack (16) and the gear portion (15) are meshed and transmitted.

3. The segmented welding device for stator core according to claim 2, characterized in that: The conversion transmission assembly (10) includes a central rotating shaft (20) and an ear-type bracket (21), wherein the ear-type bracket (21) is symmetrically fixed to the outside of the conversion bracket (7), and the central rotating shaft (20) is rotatably arranged in the ear-type bracket (21). The sequential transmission mechanism (2) includes a tapered wheel (24) and a tapered hole wheel (25), wherein the tapered wheel (24) is fixed to the ear-type bracket (21), and the outer ring of the tapered wheel (24) is uniformly provided with a protrusion 1 (27), and the inner ring of the tapered hole wheel (25) is uniformly provided with a protrusion 2 (28), and the central rotating shaft (20), the tapered wheel (24) and the tapered hole wheel (25) are coaxially arranged.

4. The segmented welding device for stator core according to claim 3, characterized in that: The ear-type bracket (21) is symmetrically provided with guide sliding holes (23), and the rack mounting ring (17) is symmetrically provided with guide columns (22), and the guide columns (22) are engaged and slidably provided in the guide sliding holes (23).

5. The segmented welding device for stator core according to claim 4, characterized in that: The conversion transmission assembly (10) further includes a lifting rack (18) and a lifting gear (19), wherein the lifting rack (18) is fixedly connected to the rack mounting ring (17), and the lifting gear (19) is fixedly connected to the central rotating shaft (20). The lifting rack (18) and the lifting gear (19) are meshed and transmitted with each other, and the transmission between the lifting rack (18) and the lifting gear (19) can cause the rack mounting ring (17) to be lifted or lowered relative to the conversion bracket (7).

6. The segmented welding device for stator core according to claim 5, characterized in that: The invention also includes a disc bottom plate (4), and the sequential transmission mechanism (2) further includes a flip support assembly (26), the flip support assembly (26) including a fixed connection member (29) and a flip support frame (30), the flip support frame (30) is fixed to the disc bottom plate (4), the fixed connection member (29) is rotatably arranged in the flip support frame (30), and the two ends of the flip support frame (30) are respectively fixed to the conical wheel (24) and the ear-type bracket (21).

7. The segmented welding device for stator core according to claim 6, characterized in that: The flip locking mechanism (3) includes an axial locking assembly (31), and the axial locking assembly (31) includes a bearing bracket (34) and an electromagnetic push plate (35). The bearing bracket (34) is fixed to the disc bottom plate (4), and the electromagnetic push plate (35) is arranged between the bearing bracket (34) and the tapered hole wheel (25). When the electromagnetic push plate (35) is energized, it can extend and increase its thickness, thereby pushing the tapered hole wheel (25) to slide toward the tapered wheel (24).

8. The segmented welding device for stator core according to claim 7, characterized in that: The flip locking mechanism (3) further includes a main shaft bearing (32) and a drive motor (33), wherein the drive motor (33) is arranged on the disc bottom plate (4), an output shaft of the drive motor (33) is connected to the central rotating shaft (20), and the main shaft bearing (32) is arranged between the bearing bracket (34) and the central rotating shaft (20).

9. The segmented welding device for stator core according to claim 8, characterized in that: The invention also includes a welding gun (5), which is located on an external clamping device. The electromagnetic push plate (35) and the welding gun (5) are controlled by the same switch, and can automatically complete the flip locking during the welding process.

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