Laser welding jig and laser welding equipment

Abstract

The invention provides a laser welding jig and laser welding equipment, and the laser welding jig comprises a lower jig plate used for limiting a shell; the upper jig plate is arranged on the upper side of the lower jig plate and can be close to or away from the lower jig plate in the longitudinal direction, a rotating ring is rotationally installed on the upper jig plate, spokes are arranged on the inner side wall of the rotating ring, a rotating shaft is rotationally installed on the spokes, the rotating shaft and the rotating ring are coaxial, a pressing plate is arranged at the end, facing the lower jig plate, of the rotating shaft, and the shell is located between the lower jig plate and the pressing plate; and the first driving piece is arranged on the upper jig plate and used for driving the rotating ring to rotate, so that the spokes rotate by a certain angle along with the rotating ring. Continuous welding of the welding seam can be achieved by rotating the rotating ring, the shell does not need to be clamped again, the path does not need to be planned again when the galvanometer projecting the laser beam executes two times of welding, the welding duration of the shell is effectively shortened, the welding efficiency is improved, and the labor cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of jigs, and in particular to a laser welding jig and a laser welding device. Background Art

[0002] As Figure 10 shown is a kind of housing, which includes a bottom case and a top cover on the top of the bottom case, and the top cover is used to close the bottom case. In order to improve the sealing performance of the top cover to the bottom case, the top cover and the bottom case are laser welded, and the weld seam is continuous and extends along the edge of the top cover. During welding, it is necessary to fix the top cover and the bottom case by a jig, but the traditional jig inevitably interferes with the continuous path of laser welding. Therefore, when full welding of the edge of the top cover is to be achieved, at least two laser weldings are required for the housing. That is, during the first welding, the area of the top cover that is not blocked or interfered by the jig is welded; during the second welding, the housing is clamped and fixed by another jig, and the area missed in the first welding is repaired. This increases the welding time of the housing, reduces the welding efficiency and increases the labor cost at the same time. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the first object of the present invention is to provide a laser welding jig, which effectively reduces the welding time of the housing, improves the welding efficiency and reduces the labor cost.

[0004] The second object of the present invention is to provide a laser welding device, which has higher welding efficiency.

[0005] The embodiments of the present invention are realized by the following technical solutions:

[0006] A laser welding jig includes: a lower jig plate for limiting the housing; an upper jig plate arranged on the upper side of the lower jig plate and capable of approaching or separating from the lower jig plate longitudinally. A rotating ring is rotatably installed on the upper jig plate, and a spoke is arranged on the inner side wall of the rotating ring. A rotating shaft is rotatably installed on the spoke, and the rotating shaft is coaxial with the rotating ring. One end of the rotating shaft facing the lower jig plate is provided with a pressing plate, and the housing is located between the lower jig plate and the pressing plate; and a first driving member arranged on the upper jig plate for driving the rotating ring to rotate so that the spoke rotates a certain angle following the rotating ring. This laser welding jig can achieve continuous welding of the weld seam by rotating the rotating ring, without re-clamping the housing, and the galvanometer projecting the laser beam does not need to re-plan the path during two weldings, effectively reducing the welding time of the housing, improving the welding efficiency and reducing the labor cost.

[0007] According to a preferred embodiment, one side surface of the pressing plate facing the lower jig plate is provided with a first working plane, and a first negative pressure hole is arranged on the first working plane.

[0008] According to a preferred embodiment, a second working plane is disposed on a side surface of the lower jig plate facing the upper jig plate, and second negative pressure holes are disposed on the second working plane.

[0009] According to a preferred embodiment, a first limiting plate and a second limiting plate are disposed on the lower jig plate. Both the first limiting plate and the second limiting plate are perpendicular to the second working plane; the first limiting plate and the second limiting plate are perpendicular to each other, and the housing is placed on the second working plane and abuts against the first limiting plate and the second limiting plate.

[0010] According to a preferred embodiment, a first reset surface is disposed on a circumferential side surface of the rotating shaft. A reset block is adjustably assembled on the spoke. A second reset surface is disposed on the reset block. The second reset surface can abut against or disengage from the first reset surface; when the rotating ring is in the reset state, the second reset surface abuts against the first reset surface; when the rotating ring is in the non-reset state, the second reset surface disengages from the first reset surface.

[0011] According to a preferred embodiment, the reset block is slidably connected to the spoke.

[0012] According to a preferred embodiment, a fixing block is disposed on the rotating ring. A first reset spring is disposed between the fixing block and the reset block. The first reset spring acts on the reset block so that the reset block has a tendency to move towards the rotating shaft; a track block is assembled on the upper jig plate. A track surface is disposed on the track block. A roller is disposed on the reset block. The roller is in rolling connection with the track surface. When the rotating ring rotates relative to the upper jig plate, the roller moves along the track surface so that the reset block slides relative to the spoke.

[0013] According to a preferred embodiment, the first reset surface is a plane and is perpendicular to the horizontal plane; the second reset surface includes two cylindrical surfaces and protrudes towards the first reset surface. The generatrix of the cylindrical surface is perpendicular to the horizontal plane; when the rotating ring is in the reset state, both cylindrical surfaces abut against the first reset surface.

[0014] According to a preferred embodiment, the second reset surface includes two cylindrical surfaces and protrudes towards the first reset surface; the first reset surface is a cylindrical surface recessed radially inwards towards the rotating shaft, and the first reset surface is adapted to the second reset surface; when the rotating ring is in the reset state, at least a part of the reset block is clamped to the rotating shaft.

[0015] A laser welding device includes a machine table, a galvanometer, and the aforementioned laser welding jig. Both the galvanometer and the laser welding jig are assembled on the machine table. This laser welding device has higher welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0017] Figure 1 Schematic three-dimensional structure diagram of the laser welding jig provided by the embodiment of the present invention;

[0018] Figure 2 Schematic top view structure diagram of the laser welding jig provided by the embodiment of the present invention;

[0019] Figure 3 Schematic first three-dimensional structure diagram of the upper jig plate and the rotating ring after assembly provided by the embodiment of the present invention;

[0020] Figure 4 Schematic second three-dimensional structure diagram of the upper jig plate and the rotating ring after assembly provided by the embodiment of the present invention;

[0021] Figure 5 Exploded schematic diagram of the assembly structure of the rotating ring, the reset block, the rotating shaft and the pressing plate provided by the embodiment of the present invention;

[0022] Figure 6 Schematic three-dimensional structure diagram of the lower guiding part provided by the embodiment of the present invention;

[0023] Figure 7 Schematic top view structure diagram of the rotating ring in the reset state provided by the embodiment of the present invention;

[0024] Figure 8 Schematic top view structure diagram of the rotating ring in the non-reset state provided by the embodiment of the present invention;

[0025] Figure 9 Schematic assembly structure diagram of the lower jig plate and the housing provided by the embodiment of the present invention;

[0026] Figure 10 Schematic three-dimensional structure diagram of a certain model housing in the embodiment of the present invention;

[0027] Figure 11 Schematic working diagram of the laser beam cooperating with the laser welding jig provided by this embodiment.

[0028] Icons: 1. Lower jig plate; 11. Second working plane; 12. First limiting plate; 13. Second limiting plate; 2. Upper jig plate; 21. Cylinder bracket; 22. Driving cylinder; 23. Driving plate; 231. Driving chute; 24. Trajectory block; 241. Trajectory surface; 25. Second return spring; 3. Swivel ring; 31. Spoke; 311. Avoidance groove; 32. Return block; 321. Upper guiding part; 3211. Roller; 322. Connecting part; 323. Lower guiding part; 3231. Second return surface; 33. Fixed block; 34. First return spring; 35. Follow-up wheel; 41. Base plate; 42. Vertical plate; 421. Rodless cylinder; 5. Rotating shaft; 50. First return surface; 501. Return step; 51. Pressing plate; 511. First working plane; 5111. First negative pressure hole; a. Housing; a1. Top cover; a11. Weld seam; a2. Bottom shell; A. Laser beam. Detailed implementation mode

[0029] For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0030] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0032] Please refer to Figures 1 to 11 , a laser welding jig, including an upper jig plate 2, a lower jig plate 1 and a first driving member, wherein: the lower jig plate 1 is used for limiting the housing a; the upper jig plate 2 is arranged on the upper side of the lower jig plate 1 and can move closer to or away from the lower jig plate 1 longitudinally. A swivel ring 3 is rotatably installed on the upper jig plate 2. A spoke 31 is arranged on the inner side wall of the swivel ring 3. A rotating shaft 5 is rotatably installed on the spoke 31. The rotating shaft 5 is coaxial with the swivel ring 3. One end of the rotating shaft 5 facing the lower jig plate 1 is provided with a pressing plate 51. The housing a is located between the lower jig plate 1 and the pressing plate 51; the first driving member is arranged on the upper jig plate 2 and is used for driving the swivel ring 3 to rotate so that the spoke 31 rotates a certain angle following the swivel ring 3.

[0033] As Figure 1As shown, the laser welding fixture further includes a bottom plate 41 and a longitudinal plate 42. The bottom plate 41 is horizontally arranged, and the longitudinal plate 42 is assembled on the bottom plate 41 and is perpendicular to the bottom plate 41. The lower fixture plate 1 is assembled on the bottom plate 41, and the upper fixture plate 2 is slidably assembled on the longitudinal plate 42 through a slide rail and slider assembly, so that the upper fixture plate 2 can move longitudinally relative to the lower fixture plate 1. In this embodiment, an assembly hole is penetrated through the upper fixture plate 2, and the swivel ring 3 is rotatably installed in the assembly hole through a bearing.

[0034] As Figure 5 , Figure 6 and Figure 7 shown, the swivel ring 3 is a circular ring. Optionally, there is one spoke 31, which is arranged on the inner wall of the swivel ring 3, and this spoke 31 coincides with a diameter of the swivel ring 3. The rotating shaft 5 is rotatably installed at the central position of the spoke 31 through a bearing. The pressing plate 51 cooperates with the lower fixture plate 1 to position the housing a, and the weld seam a11 of the housing a is exposed longitudinally upward through the internal space of the swivel ring 3, that is, the laser beam A passes through the internal space of the swivel ring 3 to reach the weld seam a11 for welding. It can be understood that the pressing plate 51 is inside the weld seam a11, and the spoke 31 area causes interference to the continuity of the weld seam a11. During use, the housing a is positioned by the pressing plate and the lower fixture plate 1. At this time, the swivel ring 3 is in the reset state. Define the area where the weld seam a11 is not interfered by the spoke 31 as the first welding section, and the area where the weld seam a11 is interfered by the spoke 31 as the second welding section.

[0035] As Figure 7 shown, when the swivel ring 3 is in the reset state, the welding of the first welding section is realized; as Figure 8 shown, when the swivel ring 3 is in the non-reset state, the welding of the second welding section is realized. Specifically, when the welding of the first welding section is completed, the first driving member drives the swivel ring 3 to rotate, and the spoke 31 rotates synchronously with the swivel ring 3 to expose the second welding section. During this process, the swivel ring 3 rotates relative to the upper fixture plate 2, and the pressing plate 51, that is, the rotating shaft 5, remains stationary relative to the upper fixture plate 2 under the frictional force of the housing a. Therefore, the second welding section can be fully exposed during the rotation of the swivel ring 3 while maintaining good positioning of the housing a. This laser welding fixture can realize the continuous welding of the weld seam a11 (here, the continuous welding refers to the connection of the trajectories of the first welding section and the second welding section to form a continuous closed-loop weld seam a11) by rotating the swivel ring 3, without re-clamping the housing a, and the galvanometer (not shown in the figure) that projects the laser beam A does not need to re-plan the path when performing two weldings. According to the preset weld seam a11 path, the welding of the first welding section and the second welding section can be completed respectively, effectively reducing the welding time of the housing a, improving the welding efficiency, and reducing the labor cost. It should be noted that the swivel ring 3 rotates for the purpose of exposing the second welding section. Therefore, the rotation direction and rotation angle of the swivel ring 3 are based on achieving this purpose, that is, the swivel ring 3 can be rotated to fully expose the second welding section.

[0036] AsFigure 1 and Figure 2 As shown in Figure 2 , an adjustment groove (not shown in the figure) is provided through the vertical plate 42. A rodless cylinder 421 is provided on the side of the vertical plate 42 away from the upper fixture plate 2. At least a part of the upper fixture plate 2 passes through the adjustment groove and is connected to the rodless cylinder 421, and is driven by the rodless cylinder 421 to move longitudinally.

[0037] As Figure 3 shown in Figure 3 , the first driving member includes a cylinder bracket 21, a driving plate 23 and a driving cylinder 22. The cylinder bracket 21 is fixedly installed on the upper fixture plate 2. The driving plate 23 is slidably installed on the upper fixture plate 2 through a slide rail-slider assembly. The driving cylinder 22 is installed on the cylinder bracket 21 and is used to drive the driving plate 23 to move. The moving direction of the driving plate 23 is parallel to the tangential direction of the rotating ring 3. A follower wheel 35 is arranged on the rotating ring 3, and a driving chute 231 is formed on the driving plate 23. The follower wheel 35 is assembled in the driving chute 231. With such an arrangement, the linear motion of the driving plate 23 can be converted into the circular motion of the rotating ring 3 to realize the rotation of the ring.

[0038] As Figure 4 shown in Figure 4 , preferably, a first working plane 511 is arranged on the side of the pressing plate 51 facing the lower fixture plate 1, and a first negative pressure hole 5111 is arranged on the first working plane 511. During use, the top cover a1 fits onto the first working plane 511, and the first negative pressure hole 5111 generates negative pressure to adsorb and fix the top cover a1.

[0039] In this embodiment, the rotating shaft 5 is hollow and is provided with an air passage. The upper end of the rotating shaft 5 is connected to a negative pressure source, and the lower end is connected to the pressing plate 51. In this embodiment, the negative pressure plate is hollow and is provided with a first negative pressure chamber. The first negative pressure hole 5111 is connected to the first negative pressure chamber, and the lower end of the rotating shaft 5 is connected to the first negative pressure chamber.

[0040] As Figure 1 and Figure 9 shown in Figure 1 and Figure 9 , a second working plane 11 is arranged on the side of the lower fixture plate 1 facing the upper fixture plate 2, and a second negative pressure hole (not shown in the figure) is arranged on the second working plane 11. In this embodiment, the lower fixture plate 1 is hollow and is provided with a second negative pressure chamber. The second negative pressure hole is connected to the second negative pressure chamber, and the second negative pressure chamber is connected to a negative pressure source. Negative pressure is generated at the second negative pressure hole to adsorb and fix the bottom shell a2.

[0041] Further, a first limiting plate 12 and a second limiting plate 13 are arranged on the lower fixture plate 1. Both the first limiting plate 12 and the second limiting plate 13 are perpendicular to the second working plane 11. The first limiting plate 12 and the second limiting plate 13 are perpendicular to each other. The housing a is placed on the second working plane 11 and abuts against the first limiting plate 12 and the second limiting plate 13. In this embodiment, the first limiting plate 12 and the second limiting plate 13 are used to cooperate with the second working plane 11 to position the bottom shell a2, so as to ensure the clamping accuracy of the bottom shell a2, that is, the housing a.

[0042] During use, first, the bottom shell a2 is positioned on the lower fixture plate 1 through the first limiting plate 12, the second limiting plate 13 and the second working plane 11. Then, the top cover a1 is conveyed to the pressing plate 51 by a manipulator and is fixedly attached to the first working plane 511. Subsequently, the upper fixture plate 2 moves downward longitudinally so that the top cover a1 is assembled to the bottom shell a2, and the clamping of the housing a on the fixture is completed. Then, the housing a is welded by a laser, that is, the welding steps of the first weld segment and the second weld segment described above are implemented to complete the welding of the housing a. Finally, the swivel 3 is reset to the reset state, the upper fixture plate 2 moves away from the lower fixture plate 1 longitudinally, and after the housing a is unloaded, the welding of the next housing a is carried out, and so on in a cycle.

[0043] A first reset surface 50 is arranged on the circumferential side surface of the rotating shaft 5. A reset block 32 is adjustably assembled on the spoke 31. A second reset surface 3231 is arranged on the reset block 32. The second reset surface 3231 can abut against or disengage from the first reset surface 50. When the swivel 3 is in the reset state, the second reset surface 3231 abuts against the first reset surface 50. When the swivel 3 is in the non-reset state, the second reset surface 3231 disengages from the first reset surface 50. As Figure 5 shown, in this embodiment, the rotating shaft 5 is a stepped shaft, and its lower end, that is, the end close to the pressing plate 51, has a reset step 501. The first reset surface 50 is arranged on the side surface of the reset step 501. Optionally, the first reset surface 50 is a plane and is perpendicular to the horizontal plane. The second reset surface 3231 includes two cylindrical surfaces and protrudes towards the first reset surface 50. The generatrix of the cylindrical surface is perpendicular to the horizontal plane. When the swivel 3 is in the reset state, the second reset surface 3231 abuts against the first reset surface 50. At this time, both cylindrical surfaces are in line contact with the first reset surface 50, and the contact line is parallel to the generatrix of the cylindrical surface. In this way, when the swivel 3 is in the reset state, the rotating shaft 5, that is, the pressing plate 51, can be in a stable posture in the circumferential direction by the way that the second reset surface 3231 abuts against the first reset surface 50, so as to ensure the accuracy of fixing the top cover a1 in the next welding cycle, thereby ensuring the assembly accuracy of the top cover a1 and the bottom shell a2, and further ensuring the welding accuracy of the housing a.

[0044] In some embodiments, the first reset surface 50 may be a cylindrical surface adapted to the second reset surface 3231, that is, the first reset surface 50 is a cylindrical surface recessed radially inwardly towards the rotating shaft 5. With such a setting, when the second reset surface 3231 abuts against the first reset surface 50, that is, when the swivel ring 3 is in the reset state, the reset block 32 is at least partially clamped to the rotating shaft 5, which can limit the circumferential position of the rotating shaft 5 and also ensure the perpendicularity of the rotating shaft 5 to a certain extent, thereby ensuring that the pressing plate 51 does not tilt to a certain extent, and further ensuring the assembly accuracy of the top cover a1.

[0045] In other embodiments, both the first reset surface 50 and the second reset surface 3231 may be spherical surfaces. Correspondingly to the cylindrical surface, the second reset surface 3231 protrudes towards the first reset surface 50, and the first reset surface 50 is recessed radially inwardly along the rotating shaft 5.

[0046] In some embodiments, the reset block 32 is slidably connected to the spoke 31. In some embodiments, the reset block 32 is slidably connected to the spoke 31 through a slide rail and slider assembly, and the reset block 32 can be driven by a driving member such as a cylinder or an electric push rod to move, so as to realize the abutment or separation of the second reset surface 3231 from the first reset surface 50.

[0047] In this embodiment, optionally, the reset block 32 includes an upper guiding portion 321, a connecting portion 322, and a lower guiding portion 323. The upper guiding portion 321 and the lower guiding portion 323 are connected by the connecting portion 322. An avoidance groove 311 is formed through the spoke 31. The upper guiding portion 321 is slidably mounted on the spoke 31 through a slide rail and slider assembly. The connecting portion 322 passes through the avoidance groove 311. The lower guiding portion 323 is located below the spoke 31, and the second reset surface 3231 is disposed on the lower guiding portion 323. With such a setting, the reset block 32 and the spoke 31 can be highly integrated to reduce the projected area of the combined structure of the reset block 32 and the spoke 31 on the top cover a1, thereby being able to shorten the size of the second welding section, and further being able to reduce the effective rotation angle of the swivel ring 3 (the minimum angle of rotation for completely exposing the second welding section), which is beneficial to improving work efficiency.

[0048] Such as Figure 5 、 Figure 7 and Figure 8As shown, in this embodiment, a fixing block 33 is arranged on the swivel ring 3, and a first return spring 34 is arranged between the fixing block 33 and the reset block 32. The first return spring 34 acts on the reset block 32 so that the reset block 32 has a tendency to move towards the rotating shaft 5. A track block 24 is assembled on the upper jig plate 2, a track surface 241 is arranged on the track block 24, a roller 3211 is arranged on the reset block 32, and the roller 3211 is in rolling connection with the track surface 241. When the swivel ring 3 rotates relative to the upper jig plate 2, the roller 3211 moves along the track surface 241 so that the reset block 32 slides relative to the spoke 31. In this embodiment, the roller 3211 is rotatably installed on the upper guiding portion 321, and the track surface 241 is a cam surface adapted to the roller 3211, which is used to cooperate with the roller 3211 to drive the reset block 32 to slide relative to the spoke 31, so that the second reset surface 3231 can disengage from the first reset surface 50 during the process of the swivel ring 3 rotating from the reset state to the non-reset state. Thus, the rotation of the swivel ring 3 and the sliding of the reset block 32 can be synchronized, which is beneficial to improving the action accuracy. Moreover, the rotation of the swivel ring 3 and the sliding of the reset block 32 are driven by the same power source, saving costs and reducing the volume of the jig at the same time.

[0049] Optionally, both the foregoing follower wheel 35 and roller 3211 can be cam followers.

[0050] As Figure 7 and Figure 8 shown, the first return spring 34 is always in a compressed state. When the swivel ring 3 is in the non-reset state, the first return spring 34 is further compressed, which is beneficial to the quick reset of the reset block 32 when the swivel ring 3 rotates to the reset state so that the second reset surface 3231 can act on the first reset surface 50 in time.

[0051] As Figures 1 to 4 shown, a second return spring 25 is arranged between the swivel ring 3 and the upper jig plate 2. The second return spring 25 acts on the swivel ring 3 so that it has a tendency to maintain the reset state. The second return spring 25 here is beneficial to the process of the swivel ring 3 changing from the non-reset state to the reset state.

[0052] As Figure 11 shown, it is a working schematic diagram of the laser beam A cooperating with the laser welding jig of this embodiment.

[0053] In some embodiments, the housing a can be used for a battery.

[0054] This embodiment also provides a laser welding device, which includes a machine table (not shown in the figure), a galvanometer (not shown in the figure) and the foregoing laser welding jig. The galvanometer and the laser welding jig are both assembled on the machine table. Based on the laser welding jig, the laser welding device has higher welding efficiency.

[0055] The technical means disclosed in the solution of the present invention are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements are also regarded as the protection scope of the present invention.

Claims

1. A laser welding jig, characterized in that, Comprising: A lower jig plate for limiting the housing; An upper jig plate disposed on the upper side of the lower jig plate and capable of approaching or separating from the lower jig plate longitudinally. A rotating ring is rotatably installed on the upper jig plate. A spoke is disposed on the inner side wall of the rotating ring. A rotating shaft is rotatably installed on the spoke. The rotating shaft is coaxial with the rotating ring. A pressing plate is disposed at one end of the rotating shaft facing the lower jig plate. The housing is located between the lower jig plate and the pressing plate; and A first driving member disposed on the upper jig plate for driving the rotating ring to rotate so that the spoke rotates by a certain angle following the rotating ring.

2. The laser welding jig according to claim 1, wherein One side surface of the pressing plate facing the lower jig plate is provided with a first working plane, and a first negative pressure hole is disposed on the first working plane.

3. The laser welding jig according to claim 1, wherein, One side surface of the lower jig plate facing the upper jig plate is provided with a second working plane, and a second negative pressure hole is disposed on the second working plane.

4. The laser welding jig according to claim 3, wherein, The lower jig plate is provided with a first limiting plate and a second limiting plate, and both the first limiting plate and the second limiting plate are perpendicular to the second working plane; The first limiting plate and the second limiting plate are perpendicular. The housing is placed on the second working plane and abuts against the first limiting plate and the second limiting plate.

5. The laser welding jig according to claim 1, wherein A first reset surface is disposed on the circumferential side surface of the rotating shaft. A reset block is adjustably assembled on the spoke. A second reset surface is disposed on the reset block, and the second reset surface can abut against or disengage from the first reset surface; When the rotating ring is in the reset state, the second reset surface abuts against the first reset surface; When the rotating ring is in the non-reset state, the second reset surface disengages from the first reset surface.

6. The laser welding jig according to claim 5, wherein The reset block is slidably connected to the spoke.

7. The laser welding jig according to claim 6, wherein A fixing block is disposed on the rotating ring. A first reset spring is disposed between the fixing block and the reset block. The first reset spring acts on the reset block so that the reset block has a tendency to move towards the rotating shaft; A track block is assembled on the upper jig plate. A track surface is disposed on the track block. A roller is disposed on the reset block. The roller is in rolling connection with the track surface. When the rotating ring rotates relative to the upper jig plate, the roller moves along the track surface so that the reset block slides relative to the spoke.

8. The laser welding jig according to claim 5, wherein, The first reset surface is a plane and is perpendicular to the horizontal plane; The second reset surface includes two cylindrical surfaces and is convexly disposed towards the first reset surface. The generatrix of the cylindrical surface is perpendicular to the horizontal plane; When the rotating ring is in the reset state, both cylindrical surfaces abut against the first reset surface.

9. The laser welding jig according to claim 5, wherein The second reset surface includes two cylindrical surfaces and is convexly disposed towards the first reset surface; The first reset surface is a cylindrical surface recessed radially inwards towards the rotating shaft, and the first reset surface is adapted to the second reset surface; When the rotating ring is in the reset state, at least part of the reset block is clamped to the rotating shaft.

10. A laser welding device, characterized in that, Including a machine table, a galvanometer, and the laser welding jig according to any one of claims 1-9, wherein the galvanometer and the laser welding jig are both assembled on the machine table.

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