Clamping device for stator laser welding

Abstract

The invention relates to the technical field of driving motor production, in particular to a clamping device for stator laser welding. The first driving gear is provided with a first vortex line groove, the first vortex line groove extends from the outer ring of the first driving gear to the inner ring of the first driving gear, one ends of the multiple first clamping jaws are arranged in the first vortex line groove at intervals, the first clamping jaws can move along the first vortex line groove, and the first clamping jaws are arranged on the support in a sliding mode in the radial direction. The other end of the first clamping jaw can abut against one end of the copper wire head set, the second driving gear is provided with a second vortex line groove, the second vortex line groove extends from the outer ring of the second driving gear to the inner ring of the second driving gear, one ends of the second clamping jaws are arranged in the second vortex line groove at intervals, and the second clamping jaws can move along the second vortex line groove. The second clamping jaw is slidably arranged on the support in the radial direction, and the other end of the second clamping jaw can abut against the other end of the copper wire head set so that the copper wire head set can be clamped in the radial direction, radial light leakage can be prevented, material use can be reduced, and cost can be reduced.

Description

Technical Field

[0001] This invention relates to the field of drive motor manufacturing technology, and in particular to a clamping device for stator laser welding. Background Technology

[0002] like Figure 1 As shown, the existing stator welding fixture includes an upper clamping plate and a lower clamping plate. The upper and lower clamping plates rotate in opposite directions to clamp the copper wire of the stator before welding. Because the copper wire is subjected to circumferential clamping force, there is a radial gap after the copper wire is clamped. Laser welding is prone to light leakage, resulting in a small weld area and low pull-out force, leading to unqualified welding. The double-layer clamping plate results in a longer copper wire length, which wastes materials and increases costs.

[0003] Therefore, there is an urgent need for a clamping device for stator laser welding to solve the above-mentioned technical problems. Summary of the Invention

[0004] The purpose of this invention is to provide a clamping device for stator laser welding that can prevent radial light leakage, reduce material usage, and lower costs.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] The utility model provides a kind of clamping device for stator laser welding, and stator includes fixedly connected core and several copper wire structures, several The copper wire structure is concentrically arranged, and the radius of the copper wire structure gradually increases along the inner ring of the core to the outer ring of the core, and the copper wire structure includes several copper wire head groups, the clamping device for stator laser welding includes clamping mechanism and jacking mechanism, and the jacking mechanism is used to lift the stator, and the clamping mechanism includes support, several first clamping jaw, several second clamping jaw, first driving part, first driving gear, second driving part and second driving gear, several The first clamping jaw is arranged one by one with several The second clamping jaw is arranged one by one with several The copper wire head group, the first driving gear is rotatably connected to the support, the first driving part is drivingly connected with the first driving gear, the first driving part can drive the first driving gear to rotate, the first driving gear is provided with first vortex slot, and the first vortex slot extends from the outer ring of the first driving gear to the inner ring of the first driving gear, and the one end of several The first clamping jaw is arranged in the first vortex slot with interval, and the first clamping jaw can move along the first vortex slot, the first clamping jaw is arranged in the support along radial sliding, and the other end of the first clamping jaw can be abutted with the one end of the copper wire head group, the second driving gear is rotatably connected to the support, the second driving part is drivingly connected with the second driving gear, the second driving part can drive the second driving gear to rotate, the second driving gear is provided with second vortex slot, and the second vortex slot extends from the outer ring of the second driving gear to the inner ring of the second driving gear, and the one end of several The second clamping jaw is arranged in the second vortex slot with interval, and the second clamping jaw can move along the second vortex slot, the second clamping jaw is arranged in the support along radial sliding, and the other end of the second clamping jaw can be abutted with the other end of the copper wire head group, to clamp the copper wire head group radially.

[0007] As a preferred technical solution of the above-mentioned clamping device for stator laser welding, the first clamping jaw includes a first chuck, a first connecting rod and a first cam roller, both ends of the first connecting rod are connected to the first chuck and the first cam roller respectively, the first cam roller is arranged in the first vortex slot, and the first cam roller can move along the first vortex slot.

[0008] As a preferred technical solution of the above-mentioned clamping device for stator laser welding, the first clamping jaw further includes a resilient member, which is configured to always have a tendency to drive the first connecting rod to move away from the first cam roller.

[0009] As a preferred technical solution of the above-mentioned clamping device for stator laser welding, the second gripper includes a second chuck, a second connecting rod, and a second cam roller. The two ends of the second connecting rod are respectively connected to the second chuck and the second cam roller. The second cam roller is disposed in the second spiral groove and can move along the second spiral groove.

[0010] As a preferred embodiment of the clamping device for stator laser welding, the clamping mechanism further includes a drive disk, a third drive member, and several protective teeth. The drive disk is rotatably connected to the bracket, and the third drive member is rotatably connected to the drive disk. The third drive member can drive the drive disk to rotate. The drive disk is provided with several drive grooves along its circumference, and the drive grooves are arranged one-to-one with the protective teeth. The drive grooves are arc-shaped and extend from the edge of the drive disk to the center of the drive disk. The protective teeth are slidably connected to the bracket, and one end of the protective teeth is slidably disposed in the drive groove. The copper wire head assembly includes a first welding end and a second welding end. A gap is provided between the bottom of the first welding end and the bottom of the second welding end. The protective teeth are arranged one-to-one with the gaps, and the other end of the protective teeth can be inserted into the gaps to support the first welding end and the second welding end.

[0011] As a preferred embodiment of the aforementioned clamping device for stator laser welding, the protective teeth are Z-shaped.

[0012] As a preferred embodiment of the clamping device for stator laser welding, the clamping mechanism further includes a first bearing assembly disposed between the first drive gear and the bracket.

[0013] As a preferred embodiment of the clamping device for stator laser welding, the clamping mechanism further includes a second bearing assembly disposed between the second drive gear and the bracket.

[0014] As a preferred technical solution of the above-mentioned clamping device for stator laser welding, the clamping device for stator laser welding further includes a lifting mechanism. The lifting mechanism includes a fourth driving member and a crown support. The fourth driving member is convexly connected to the crown support. The fourth driving member can drive the crown support to rise and fall. The crown support is located below the clamping mechanism and is used to support the stator.

[0015] As a preferred embodiment of the above-mentioned clamping device for stator laser welding, the clamping device for stator laser welding further includes a dust collection mechanism, which is provided with a dust collection port located above the bracket, and the dust collection port is used to remove impurities.

[0016] Beneficial effects of this invention:

[0017] This invention provides a clamping device for stator laser welding. The stator includes a fixedly connected iron core and several copper wire structures. The copper wire structures are concentrically arranged, and the radius of the copper wire structures gradually increases from the inner circle to the outer circle of the iron core. Each copper wire structure includes several copper wire head groups. The clamping device for stator laser welding includes a clamping mechanism and a lifting mechanism. The lifting mechanism is used to lift and lower the stator. The clamping mechanism includes a bracket, several first jaws, several second jaws, a first driving member, a first driving gear, a second driving member, and a second driving gear. The several first jaws and several second jaws are arranged in a one-to-one correspondence, and the several copper wire head groups are arranged in a one-to-one correspondence with the several first jaws. The first driving gear is rotatably connected to the bracket, and the first driving member is driveably connected to the first driving gear. The first driving member can drive the first driving gear to rotate. The first driving gear is provided with a first spiral groove, and the first spiral groove is driven by the first driving member. The outer ring of the gear extends towards the inner ring of the first drive gear. One end of several first grippers is spaced apart within a first spiral groove, and the first grippers are movable along the first spiral groove. The first grippers are radially slidably mounted on a support, and the other end of each first gripper abuts against one end of the copper wire end assembly. A second drive gear is rotatably connected to the support. A second drive member is drively connected to the second drive gear, and the second drive member can drive the second drive gear to rotate. The second drive gear is provided with a second spiral groove, extending from the outer ring of the second drive gear towards its inner ring. One end of several second grippers is spaced apart within the second spiral groove, and the second grippers are movable along the second spiral groove. The second grippers are radially slidably mounted on the support, and the other end of each second gripper abuts against the other end of the copper wire end assembly, thereby radially clamping the copper wire end assembly. Compared to existing technologies, this device, by having the first and second grippers abut against the radial ends of the copper wire end assembly respectively, can radially clamp the copper wire end assembly, preventing radial light leakage. The single-layer gripper design reduces material usage and lowers costs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.

[0019] Figure 1This is a structural schematic diagram of the clamping device in operation according to an existing technology embodiment;

[0020] Figure 2 This is a schematic diagram of the stator structure provided in an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the clamping device for stator laser welding provided in an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the lifting mechanism provided in an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the dust collection mechanism provided in an embodiment of the present invention;

[0024] Figure 6 This is a top view of the structure of the clamping device for stator laser welding provided in an embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of the first structure of the clamping mechanism provided in an embodiment of the present invention;

[0026] Figure 8 This is a schematic diagram of the second structure of the clamping mechanism provided in an embodiment of the present invention;

[0027] Figure 9 This is a schematic diagram of the first structure of the first gripper and the second gripper provided in an embodiment of the present invention;

[0028] Figure 10 This is a schematic diagram of the second structure of the first gripper and the second gripper provided in an embodiment of the present invention;

[0029] Figure 11 This is a schematic diagram of the structure of the first drive gear provided in an embodiment of the present invention;

[0030] Figure 12 This is a schematic diagram of the drive disk provided in an embodiment of the present invention;

[0031] Figure 13 This is a schematic diagram of the third structure of the clamping mechanism provided in an embodiment of the present invention.

[0032] In the picture:

[0033] 1. Stator; 11. Iron core; 12. Copper wire structure; 121. Copper wire end group; 1211. First welding end; 1212. Second welding end;

[0034] 2. Clamping mechanism; 21. Bracket; 22. First gripper; 221. First chuck; 222. First connecting rod; 223. First cam roller; 224. Elastic element; 225. Housing; 23. Second gripper; 231. Second chuck; 232. Second connecting rod; 233. Second cam roller; 24. First driving element; 25. First driving gear; 251. First spiral groove; 26. Second driving element; 27. Second driving gear; 28. Driving disc; 281. Driving groove; 29. ​​Protective tooth; 30. Third cam roller; 31. First thin-walled bearing; 32. First needle roller bearing; 33. Second thin-walled bearing; 34. Second needle roller bearing; 35. First drive gear; 36. Second drive gear;

[0035] 3. Lifting mechanism; 301. Fourth drive component; 302. Corolla support;

[0036] 4. Gaps;

[0037] 5. Dust collection mechanism; 51. Dust collection port. Detailed Implementation

[0038] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0039] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0040] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0042] like Figures 2 to 13 As shown, the present invention provides a clamping device for stator laser welding. The stator 1 includes a fixedly connected iron core 11 and a plurality of copper wire structures 12. The plurality of copper wire structures 12 are concentrically arranged, and the radius of the copper wire structures 12 gradually increases from the inner circle of the iron core 11 to the outer circle of the iron core 11. The copper wire structure 12 includes a plurality of copper wire head groups 121. The clamping device for stator laser welding includes a clamping mechanism 2 and a lifting mechanism 3. The lifting mechanism 3 is used to lift and lower the stator 1. The clamping mechanism 2 includes a bracket 21, a plurality of first jaws 22, a plurality of second jaws 23, a first driving member 24, a first driving gear 25, a second driving member 26, and a second driving gear 27.

[0043] Specifically, a plurality of first grippers 22 are correspondingly arranged with a plurality of second grippers 23, and a plurality of copper wire end assemblies 121 are correspondingly arranged with a plurality of first grippers 22. A first drive gear 25 is rotatably connected to a bracket 21, and a first drive member 24 is drively connected to the first drive gear 25. The first drive member 24 can drive the first drive gear 25 to rotate. The first drive gear 25 is provided with a first spiral groove 251, and the first spiral groove 251 extends from the outer ring of the first drive gear 25 to the inner ring of the first drive gear 25. One end of a plurality of first grippers 22 is spaced apart in the first spiral groove 251, and the first grippers 22 can move along the first spiral groove 251. The first grippers 22 are radially slidably arranged on the bracket 21, and the first... One end of a clamp 22 can abut against one end of the copper wire end assembly 121. A second drive gear 27 is rotatably connected to a bracket 21. A second drive member 26 is drively connected to the second drive gear 27, and the second drive member 26 can drive the second drive gear 27 to rotate. The second drive gear 27 is provided with a second spiral groove, which extends from the outer ring of the second drive gear 27 to the inner ring. One end of several second clamps 23 is spaced apart in the second spiral groove, and the second clamps 23 can move along the second spiral groove. The second clamps 23 are radially slidably disposed on the bracket 21, and the other end of the second clamps 23 can abut against the other end of the copper wire end assembly 121 to radially clamp the copper wire end assembly 121. Compared with the prior art, this device, by having the first clamp 22 and the second clamp 23 abut against the two ends of the copper wire end assembly 121 radially, can radially clamp the copper wire end assembly 121, prevent radial light leakage, reduce material usage in a single layer, and lower costs.

[0044] It should be noted that the bare copper section of the copper wire actually in contact with the single-layer clamp is only 1.5mm, and the distance from the enamel coating is 1.5mm. The bare copper wire protrudes 1mm from the clamp, so the enamel coating is not burned after welding, and the solder joint does not stick to the clamp. The vortex groove provides a large clamping force, which is easy to control.

[0045] Optionally, the stator 1 includes a fixedly connected iron core 11 and three copper wire structures 12. The three copper wire structures 12 are all circular, and their radii gradually increase from the inside to the outside. Each copper wire structure 12 contains the same number of copper wire head groups 121. The first clamp 22 and the second clamp 23 of the same group clamp the copper wire head groups 121 one turn at a time from the inside to the outside in the radial direction.

[0046] Optionally, the first gripper 22 includes a first chuck 221, a first connecting rod 222, and a first cam roller 223. The two ends of the first connecting rod 222 are respectively connected to the first chuck 221 and the first cam roller 223. The first cam roller 223 is disposed within a first spiral groove 251 and is movable along the first spiral groove 251. Specifically, the first chuck 221 is Z-shaped, and the first gripper 22 is disposed above the second gripper 23, enabling the first chuck 221 and the second gripper 23 to be on the same horizontal plane. The first cam roller 223 can reduce friction and improve the service life of the first gripper 22.

[0047] Optionally, the first gripper 22 further includes an elastic element 224, which is configured to always have a tendency to drive the first connecting rod 222 to move away from the first cam roller 223. Specifically, the first gripper 22 also includes a housing 225, one end of the first connecting rod 222 is slidably disposed within the housing 225, the first cam roller 223 protrudes from the housing 225, and the other end of the first connecting rod 222 is connected to the first chuck 221. The elastic element 224 is disposed between the first connecting rod 222 and the housing 225, and can provide thrust to the first connecting rod 222 to eliminate the tolerance of copper wire thickness and ensure that the copper wire assembly is effectively clamped. Further, the elastic element 224 is a rectangular compression spring.

[0048] Optionally, the second gripper 23 includes a second chuck 231, a second connecting rod 232, and a second cam roller 233. The two ends of the second connecting rod 232 are respectively connected to the second chuck 231 and the second cam roller 233. The second cam roller 233 is disposed within a second spiral groove and is movable along the second spiral groove. This configuration reduces friction and improves the service life of the second gripper 23. Furthermore, both the first connecting rod 222 and the second connecting rod 232 are telescopic rods.

[0049] Optionally, the clamping mechanism 2 further includes a drive disk 28, a third drive member, and several guard teeth 29. The drive disk 28 is rotatably connected to the bracket 21, and the third drive member is rotatably connected to the drive disk 28. The third drive member can drive the drive disk 28 to rotate. The drive disk 28 is provided with several drive grooves 281 along the circumference. The several drive grooves 281 are arranged one-to-one with several guard teeth 29. The drive grooves 281 are arc-shaped and extend from the edge of the drive disk 28 to the center of the drive disk 28. The guard teeth 29 are slidably connected to the bracket 21. One end of the guard teeth 29 is slidably disposed in the drive groove 281. The copper wire head assembly 121 includes a first welding end 1211 and a second welding end 1212. A gap 4 is provided between the bottom of the first welding end 1211 and the bottom of the second welding end 1212. The several guard teeth 29 are arranged one-to-one with several gaps 4. The other end of the guard teeth 29 can be inserted into the gap 4 to support the first welding end 1211 and the second welding end 1212. Specifically, the tooth 29 is Z-shaped and can prevent the first welding end 1211 and the second welding end 1212 from moving when inserted into the gap 4. The clamping mechanism 2 also includes a number of third cam rollers 30, which are arranged one-to-one with the tooth 29. The third cam rollers 30 protrude from one end of the tooth 29 and slide in the drive groove 281, which can reduce friction and improve the service life of the tooth 29.

[0050] Optionally, the clamping mechanism 2 further includes a first bearing assembly, which is disposed between the first drive gear 25 and the bracket 21. Specifically, the first bearing assembly includes a first thin-walled bearing 31 and a first needle roller bearing 32. The first thin-walled bearing 31 is disposed between the inner ring of the first drive gear 25 and the bracket 21, and the first needle roller bearing 32 is disposed between the outer ring of the first drive gear 25 and the bracket 21, which can reduce the friction of the first drive gear 25.

[0051] Optionally, the clamping mechanism 2 further includes a second bearing assembly, which is disposed between the second drive gear 27 and the bracket 21. Specifically, the second bearing assembly includes a second thin-walled bearing 33 and a second needle roller bearing 34. The second thin-walled bearing 33 is disposed between the inner ring of the second drive gear 27 and the bracket 21, and the second needle roller bearing 34 is disposed between the outer ring of the second drive gear 27 and the bracket 21, which can reduce the friction of the second drive gear 27.

[0052] Optionally, the clamping mechanism 2 further includes a first drive gear 35 and a second drive gear 36. The first drive gear 35 is connected to the first drive member 24 and the first drive member 24 can drive the first drive gear 35 to rotate. The first drive gear 35 meshes with the first drive gear 25. The second drive gear 36 is connected to the second drive member 26 and the second drive member 26 can drive the second drive gear 36 to rotate. The second drive gear 36 meshes with the second drive gear 27.

[0053] Optionally, the lifting mechanism 3 includes a fourth driving member 301 and a crown support 302. The fourth driving member 301 is connected to the crown support 302 in a transmission manner. The fourth driving member 301 can drive the crown support 302 to rise and fall. The crown support 302 is located below the clamping mechanism 2 and is used to support the stator 1. Further, the fourth driving member 301 is a servo electric cylinder, and the first driving member 24, the second driving member 26, and the third driving member are all motors.

[0054] Optionally, the clamping device for stator laser welding also includes a dust collection mechanism 5, which is provided with a dust collection port 51 located above the bracket 21. The dust collection port 51 is used to remove impurities to avoid impurities from adversely affecting the welding.

[0055] Furthermore, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A clamping device for stator laser welding, wherein the stator (1) comprises a fixedly connected iron core (11) and a plurality of copper wire structures (12), the plurality of copper wire structures (12) being concentrically arranged, and the radius of the copper wire structures (12) gradually increasing from the inner circle of the iron core (11) to the outer circle of the iron core (11), wherein the copper wire structure (12) comprises a plurality of copper wire head groups (121), characterized in that, The stator laser welding clamping device includes a clamping mechanism (2) and a lifting mechanism (3). The lifting mechanism (3) is used to lift the stator (1). The clamping mechanism (2) includes a bracket (21), a plurality of first jaws (22), a plurality of second jaws (23), a first drive member (24), a first drive gear (25), a second drive member (26), and a second drive gear (27). The plurality of first jaws (22) and the plurality of second jaws (23) are arranged in a one-to-one correspondence. The plurality of copper wire end groups (121) and the plurality of first jaws (22) are arranged in a one-to-one correspondence. The first drive gear (25) is rotatably connected to the bracket (21), and the first drive member (24) is connected to the first drive gear (25) in a transmission manner. The first drive member (24) can drive the first drive gear (25) to rotate. The first drive gear (25) is provided with a first spiral groove (251), and the first spiral groove (251) extends from the outer ring of the first drive gear (25) to the inner ring of the first drive gear (25). One end of a plurality of first grippers (22) is spaced apart from the first spiral groove. The first gripper (22) is located within the wire groove (251) and can move along the first vortex groove (251). The first gripper (22) is radially slidably disposed on the bracket (21), and the other end of the first gripper (22) can abut against one end of the copper wire head assembly (121). The second drive gear (27) is rotatably connected to the bracket (21), and the second drive member (26) is drively connected to the second drive gear (27). The second drive member (26) can drive the second drive gear (27) to rotate. The gear (27) is provided with a second spiral groove, and the second spiral groove extends from the outer ring of the second drive gear (27) to the inner ring of the second drive gear (27). One end of a plurality of second jaws (23) is spaced apart in the second spiral groove, and the second jaws (23) can move along the second spiral groove. The second jaws (23) are radially slidably disposed on the bracket (21), and the other end of the second jaws (23) can abut against the other end of the copper wire head assembly (121) to radially clamp the copper wire head assembly (121).

2. The clamping device for stator laser welding according to claim 1, characterized in that, The first gripper (22) includes a first chuck (221), a first connecting rod (222) and a first cam roller (223). The two ends of the first connecting rod (222) are respectively connected to the first chuck (221) and the first cam roller (223). The first cam roller (223) is disposed in the first spiral groove (251) and the first cam roller (223) can move along the first spiral groove (251).

3. The clamping device for stator laser welding according to claim 2, characterized in that, The first gripper (22) further includes an elastic element (224) configured to always have a tendency to drive the first connecting rod (222) to move away from the first cam roller (223).

4. The clamping device for stator laser welding according to claim 1, characterized in that, The second gripper (23) includes a second chuck (231), a second connecting rod (232), and a second cam roller (233). The two ends of the second connecting rod (232) are respectively connected to the second chuck (231) and the second cam roller (233). The second cam roller (233) is disposed in the second spiral groove and can move along the second spiral groove.

5. The clamping device for stator laser welding according to claim 1, characterized in that, The clamping mechanism (2) further includes a drive disk (28), a third drive member, and several guard teeth (29). The drive disk (28) is rotatably connected to the bracket (21), and the third drive member is rotatably connected to the drive disk (28). The third drive member can drive the drive disk (28) to rotate. The drive disk (28) is provided with several drive grooves (281) along its circumference. The several drive grooves (281) are arranged in a one-to-one correspondence with several guard teeth (29). The drive grooves (281) are arc-shaped and extend from the edge of the drive disk (28) towards the center of the drive disk (28). The protective tooth (29) is slidably connected to the bracket (21). One end of the protective tooth (29) is slidably disposed in the drive groove (281). The copper wire head assembly (121) includes a first welding end (1211) and a second welding end (1212). A gap (4) is provided between the bottom of the first welding end (1211) and the bottom of the second welding end (1212). A plurality of protective teeth (29) are provided in correspondence with a plurality of gaps (4). The other end of the protective tooth (29) can be inserted into the gap (4) to support the first welding end (1211) and the second welding end (1212).

6. The clamping device for stator laser welding according to claim 5, characterized in that, The tooth protector (29) is Z-shaped.

7. The clamping device for stator laser welding according to claim 1, characterized in that, The clamping mechanism (2) further includes a first bearing assembly, which is disposed between the first drive gear (25) and the bracket (21).

8. The clamping device for stator laser welding according to claim 1, characterized in that, The clamping mechanism (2) further includes a second bearing assembly, which is disposed between the second drive gear (27) and the bracket (21).

9. The clamping device for stator laser welding according to claim 1, characterized in that, The lifting mechanism (3) includes a fourth driving member (301) and a crown support (302). The fourth driving member (301) is connected to the crown support (302) in a transmission manner. The fourth driving member (301) can drive the crown support (302) to rise and fall. The crown support (302) is located below the clamping mechanism (2) and is used to support the stator (1).

10. A clamping device for stator laser welding according to claim 1, characterized in that, The clamping device for stator laser welding also includes a dust collection mechanism (5), which is provided with a dust collection port (51). The dust collection port (51) is located above the bracket (21) and is used to remove impurities.

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