Welding apparatus and method

Abstract

The application discloses a welding device which comprises a material moving mechanism, a welding jig and a welding mechanism; the welding jig comprises a bearing clamping assembly and a pressing assembly; the bearing clamping assembly and the pressing assembly are oppositely arranged on a material moving path of the material moving mechanism; the welding mechanism faces the welding jig; wherein the material moving mechanism moves a product to be welded to a working position of the welding jig, the pressing assembly presses the bearing clamping assembly to fix the product to be welded, and the welding mechanism welds the product to be welded. The application also provides a welding method. The welding device is simple in structure, the product to be welded is clamped and fixed by the bearing clamping assembly and the pressing assembly, the product to be welded is fully pressed, and there is no gap, so that the welding mechanism can accurately weld the product to be welded, the welding quality is guaranteed, and the problem that welding laser enters the contactor from the gap and causes damage to internal parts and lines is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding, in particular to a welding device and method. BACKGROUND

[0002] During product production, parts need to be assembled. In order to ensure the stability of the connection, the welding method is usually used for the connection between the parts. For example, during the assembly process of the contactor, the upper cover needs to be welded with the lower magnetic shell. However, when the existing welding device is used to press and fix the upper cover and the lower magnetic shell, gaps are easily formed, the welding defective rate is high, and the welding laser is easy to enter the inside of the contactor from the gap, which causes damage to the internal parts and the circuit, so that the contactor cannot work normally. SUMMARY

[0003] In view of the defects of the prior art, the present application discloses a welding device, which comprises a material moving mechanism, a welding jig and a welding mechanism. The welding jig comprises a bearing clamping assembly and a pressing assembly. The bearing clamping assembly and the pressing assembly are arranged opposite to each other on the material moving path of the material moving mechanism. The welding mechanism faces the welding jig. The material moving mechanism moves the product to be welded to the working position of the welding jig. The pressing assembly presses the bearing clamping assembly to fix the product to be welded. The welding mechanism welds the product to be welded.

[0004] According to an embodiment of the present application, the welding jig comprises a bearing clamping assembly and a pressing assembly. The bearing clamping assembly and the pressing assembly are arranged opposite to each other.

[0005] According to an embodiment of the present application, the welding jig further comprises a rotating assembly. The bearing clamping assembly is arranged on the rotating assembly.

[0006] According to an embodiment of the present application, the welding jig further comprises a jacking assembly. The jacking assembly penetrates the bearing clamping assembly.

[0007] According to an embodiment of the present application, the welding jig further comprises a guide assembly. The rotating assembly and the pressing assembly are arranged on the guide assembly.

[0008] According to an embodiment of the present application, the welding mechanism comprises a first position adjusting member and a welding head. The welding head is arranged on the first position adjusting member.

[0009] According to an embodiment of the present application, the welding mechanism further comprises a second position adjusting member. The second position adjusting member is arranged on the first position adjusting member, and the welding head is arranged on the second position adjusting member.

[0010] According to an embodiment of the present application, the welding mechanism further comprises a rotating platform; the rotating platform is arranged on the second position adjusting member, and the welding head is arranged on the rotating platform.

[0011] According to an embodiment of the present application, the material moving mechanism comprises a moving assembly and a clamping assembly; the clamping assembly is arranged on the moving assembly.

[0012] According to an embodiment of the present application, the welding device further comprises a blowing dust removal mechanism; the blowing dust removal mechanism is arranged on the welding jig.

[0013] The present application further provides a welding method, comprising the following steps:

[0014] The material moving mechanism 1 moves the product to be welded to the working position of the welding jig 2;

[0015] The lower pressing assembly 24 of the welding jig 2 presses the clamping assembly 23 to fix the product to be welded;

[0016] The rotating assembly 25 rotates the product to be welded

[0017] The welding mechanism 3 spot-welds the product to be welded;

[0018] The blowing dust removal mechanism 4 blows protective gas and removes dust;

[0019] The material moving mechanism moves the welded product to the discharging end.

[0020] The welding device of the present application has the advantages of simple structure, clamping and fixing of the product to be welded by the clamping assembly and the lower pressing assembly, full pressing of the product to be welded, no gap, accurate welding of the product to be welded by the welding mechanism, guarantee of welding quality, and avoidance of the problem of damage of internal parts and circuit caused by welding laser entering the contactor from the gap. BRIEF DESCRIPTION OF DRAWINGS

[0021] The drawings described herein are used to provide further understanding of the present application, and form a part of the present application. The schematic embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitation on the present application. In the drawings:

[0022] Figure 1 It is a structural schematic view of the welding device in the embodiment of the present application;

[0023] Figure 2 It is a structural schematic view of the product to be welded in the embodiment of the present application;

[0024] Figure 3 It is a structural schematic view of the material moving mechanism in the embodiment of the present application;

[0025] Figure 4 Figure 1 is a schematic view of the structure of the welding jig cooperating with the welding mechanism in an embodiment of the present application;

[0026] Figure 5 Figure 2 is a schematic view of the structure of the welding jig in an embodiment of the present application;

[0027] Figure 6 Figure 3 is a sectional view of the welding jig in an embodiment of the present application;

[0028] Figure 7 Figure 4 is a sectional view of the cooperation of the lifting assembly, the bearing and clamping assembly and the rotating assembly in an embodiment of the present application;

[0029] Figure 8 Figure 5 is a partial enlarged view of Figure 7 Figure 6 is a partial enlarged view of

[0030] Legend of reference signs:

[0031] 01, upper cover; 011, first upper boss; 012, first lower boss; 02, lower magnetic shell; 021, first lower boss; 1, material moving mechanism; 11, moving assembly; 110, material moving support; 111, first moving piece; 112, second moving piece; 12, clamping assembly; 121, clamping driving piece; 122, clamping piece; 2, welding jig; 21, guiding assembly; 211, mounting plate; 212, guiding rod; 213, buffer piece; 22, lifting assembly; 221, lifting driving piece; 222, lifting rod; 23, bearing and clamping assembly; 2300, opening; 231, chuck; 232, clamp; 2321, stepped platform; 2322, arc-shaped positioning strip; 233, pressing block; 2331, protruding part; 234, guiding column; 235, elastic piece; 24, pressing assembly; 241, pressing driving piece; 242, pressing block; 2421, empty slot; 2422, pressing protruding ring; 243, moving plate; 244, rotating piece; 25, rotating assembly; 251, rotating disc; 252, rotating driving piece; 3, welding mechanism; 31, first position adjusting piece; 32, second position adjusting piece; 33, welding head; 4, air blowing and dust removing mechanism; 411, air blowing pipe; 412, dust removing pipe. DETAILED DESCRIPTION

[0032] In the following, a plurality of embodiments of the present application will be disclosed with reference to the drawings. For the purpose of clear illustration, a plurality of practical details will be described in the following description. However, it should be appreciated that these practical details should not be used to limit the present application. That is, in some embodiments of the present application, these practical details are not necessary. In addition, for the purpose of simplifying the drawings, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0033] It should be noted that all the direction indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the direction indications will also change accordingly.

[0034] In addition, the descriptions such as "first", "second" and the like in the present application are only for the purpose of description, and are not intended to particularly indicate the order or sequence, nor to limit the present application, which are merely to distinguish the components or operations described by the same technical terms, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of a person skilled in the art, and when the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0035] In order to further understand the content, characteristics and effects of the present application, the following embodiments are exemplified and described in detail as follows with reference to the accompanying drawings:

[0036] Please refer to Figure 1 , Figure 1 The welding device in the embodiments of the present application is shown in the structure diagram. As shown in the figure, the welding device of the present application includes a material moving mechanism 1, a welding jig 2, a welding mechanism 3 and a blowing dust removal mechanism 4. The welding jig 2 is arranged on the material moving path of the material moving mechanism 1. The welding mechanism 3 is arranged on one side of the welding jig 2, and the welding mechanism 3 faces the welding jig 2. The blowing dust removal mechanism 4 is arranged on the welding jig 2. In specific application, the material moving mechanism 1 clamps the to-be-welded product and moves it to the welding position of the welding jig 2, the welding jig 2 fixes the to-be-welded product, then the welding mechanism 3 welds the to-be-welded product, and the blowing dust removal mechanism 4 blows protective gas and removes dust during the welding process to ensure the quality of the welding. After the welding is completed, the material moving mechanism 1 takes down the welded product.

[0037] In the embodiments, the to-be-welded product is a contactor. Please refer to Figure 2 , the contactor includes an upper cover 01 and a lower magnetic shell 02. The upper cover 01 has a first upper boss 011 and a second upper boss 012, and the lower magnetic shell 02 has a first lower boss 021. In specific welding, the second upper boss 012 and the first lower boss 021 are welded to connect them together.

[0038] Further refer to Figure 3 , Figure 3Figure 1 is a structural schematic diagram of a material moving mechanism 1 according to an embodiment of the present application. As shown in the figure, the material moving mechanism 1 comprises a moving assembly 11 and a clamping assembly 12. The moving assembly 11 comprises a material moving support 110, a first moving part 111 and a second moving part 112. The first moving part 111 is arranged on the material moving support 110. The second moving part 112 is arranged on the first moving part 111. Both the first moving part 111 and the second moving part 112 are single-axis material moving mechanisms 1. The clamping assembly 12 comprises a clamping driving part 121 and a clamping part 122. The clamping driving part 121 is arranged on the second moving part 112, and is a pneumatic cylinder. The clamping part 122 is connected to an output end of the clamping driving part 121, and is a pneumatic clamping jaw. In a specific application, the first moving part 111 and the second moving part 112 cooperate to drive the clamping assembly 12 to move above a product to be welded, the clamping driving part 121 drives the clamping part 122 to move towards the product to be welded, when the clamping part 122 moves to the same height as the product to be welded, the clamping part 122 clamps the product to be welded, then the first moving part 111 and the second moving part 112 cooperate to drive the clamping part 122 clamping the product to be welded to move to a working position of a welding jig 2, the clamping part 122 releases the product to be welded, and the welding jig 2 welds the product to be welded.

[0039] It should be noted that the clamping part 122 has a groove with the same shape as the second upper boss 012 and the first lower boss 021, when the clamping part 122 clamps the product to be welded, the second upper boss 012 and the first lower boss 021 are both located in the groove, so that the clamping is firm, and the relative position between the upper cover 01 and the lower magnetic shell 02 can be ensured, and misalignment can be avoided.

[0040] Please refer to Figure 4 , Figure 5 and Figure 6 , Figure 4 Figure 2 is a structural schematic diagram of a welding jig 2 and a welding mechanism 3 cooperating according to an embodiment of the present application; Figure 5 Figure 3 is a structural schematic diagram of a welding jig 2 according to an embodiment of the present application; Figure 6This is a cross-sectional view of the welding fixture 2 in an embodiment of the present invention. As shown in the figure, the welding fixture 2 of this application includes a guide assembly 21, a lifting assembly 22, a bearing clamping assembly 23, and a pressing assembly 24. The lifting assembly 22 is disposed on the guide assembly 21. The pressing assembly 24 is disposed on the guide assembly 21, and the pressing assembly 24 is disposed opposite to the bearing clamping assembly 23. In practical application, firstly, the bearing clamping component 23 opens, the lifting component 22 is lifted into position, and the material transfer mechanism 1 moves the product to be welded to the position of the bearing clamping component 23. The lifting component 22 supports the product to be welded, and the bearing clamping component 23 closes to fix the product to be welded. The product to be welded is a combination of the upper cover 01 and the lower magnetic shell 02. The lifting component 22 returns to its initial position. Secondly, the pressing component 24 presses down on the bearing clamping component 23, and the pressing component 24 cooperates with the bearing clamping component 23 to fix the product to be welded. Finally, the welding mechanism 3 welds the product to be welded. After welding is completed, the pressing component 24 returns to its initial position, the bearing clamping component 23 opens again, the lifting component 22 is lifted again, the lifting component 22 supports the welded product, and the material transfer mechanism 1 removes the welded product.

[0041] Preferably, the welding fixture 2 further includes a rotating assembly 25, and a bearing clamping assembly 23 is disposed on the rotating assembly 25. After the pressing assembly 24 and the bearing clamping assembly 23 cooperate to fix the product to be welded, the rotating assembly 25 drives the bearing clamping assembly 23, the pressing assembly 24 and the product to be welded to rotate, and the welding mechanism 3 welds the product to be welded.

[0042] Furthermore, the guide assembly 21 includes two mounting plates 211 and a plurality of guide rods 212. The two mounting plates 211 are arranged opposite to each other, and the two ends of the plurality of guide rods 212 are respectively disposed on the two mounting plates 211, the plurality of guide rods 212 are located between the two mounting plates 211, and the plurality of guide rods 212 are parallel to each other. When the pressing assembly 24 presses down, it slides along the plurality of guide rods 212, and the plurality of guide rods 212 guide the pressing assembly 24, thereby ensuring the coaxiality between the pressing assembly 24 and the bearing clamping assembly 23. In this embodiment, the number of guide rods 212 is four. Of course, the number of guide rods 212 can be increased or decreased according to the needs. The above is only one embodiment of the present invention and should not be limited thereto.

[0043] Please refer to the following: Figure 7 and Figure 8 , Figure 7 This is a cross-sectional view of the lifting assembly 22, the bearing clamping assembly 23, and the rotating assembly 25 in an embodiment of the present invention. Figure 8 for Figure 7A local enlarged view of the bearing clamping assembly 23. As shown, the bearing clamping assembly 23 comprises a chuck 231, a clamp 232 and a press block 233. The chuck 231 is arranged on the mounting plate 211. The clamp 232 is arranged on the chuck 231. The press block 233 is connected with a guide column 234 which is inserted into the clamp 232. The press block 233 has a protruding portion 2331 on the end close to the clamp 232. In this embodiment, the chuck 231 is a three-jaw chuck 231, and correspondingly, the number of the clamp 232 and the press block 233 is also three. Three clamps 232 are arranged on the three jaws of the chuck 231 respectively, and three press blocks 233 are arranged on the three clamps 232 respectively. In specific application, first, the chuck 231 drives the clamp 232 and the press block 233 to open, the jacking assembly 22 is jacked into place, the material moving mechanism 1 moves the product to be welded into the accommodating cavity formed between the three clamps 232, and the jacking assembly 22 supports the lower magnetic shell 02 of the product to be welded. Then, the chuck 231 drives the clamp 232 and the press block 233 to close, the first lower boss 021 is clamped on the stepped wall 23231 of the inner wall of the clamp 232. During the closing process of the chuck 231, the clamp 232 and the press block 233, the arc-shaped positioning strips 2322 arranged on the end of the clamp 232 close to the press block 233 position the second upper boss 012 of the upper cover 01 and the first lower boss 021 of the lower magnetic shell 02. The number of the arc-shaped positioning strips 2322 corresponds to the number of the clamps 232, which is also three. The chuck 231 drives the three arc-shaped positioning strips 2322 to form a ring during closing, and the inner wall of the ring abuts against the outer wall of the second upper boss 012 and the first lower boss 021. In this way, the positioning of the upper cover 01 and the lower magnetic shell 02 is realized, so as to ensure the coaxiality of the upper cover 01 and the lower magnetic shell 02.

[0044] Preferably, the bearing clamping assembly 23 further comprises an elastic member 235, which is a spring. The elastic member 235 is sleeved on the guide column 234, one end of the elastic member 235 abuts against the clamp 232, and the other end of the elastic member 235 abuts against the press block 233. When the press block 233 is pressed down by the pressing assembly 24, the elastic member 235 plays a buffering role, preventing the pressure of the pressing assembly 24 from being too large and damaging the second upper boss 012 of the upper cover 01.

[0045] Further, the jacking assembly 22 comprises a jacking drive 221 and a jacking rod 222. The jacking drive 221 is arranged on the mounting plate 211, and is an electric motor. The jacking rod 222 penetrates the jacking drive 221, the rotating disc 251 and the chuck 231 in sequence, and is connected to the output end of the jacking drive 221. In actual application, the jacking drive 221 generates a driving force to drive the jacking rod 222 to jack up or down. When the material moving mechanism 1 moves the product to be welded to the working position of the bearing clamping assembly 23, the jacking drive 221 drives the jacking rod 222 to jack up to the position, so as to support and position the product to be welded, so that the first lower boss 021 of the lower magnetic shell 02 corresponds to the stepped boss 23231 of the inner sidewall of the clamp 232, and the first lower boss 021 is clamped on the stepped boss 23231 after the bearing clamping assembly 23 is folded. After welding is completed, the jacking drive 221 drives the jacking rod 222 to jack up again, so as to jack up the welded product, so that the material moving mechanism 1 can unload the welded product.

[0046] Further, the jacking assembly 22 comprises a jacking drive 221 and a jacking rod 222. The jacking drive 221 is arranged on the mounting plate 211, and is an electric motor. The jacking rod 222 penetrates the jacking drive 221, the rotating disc 251 and the chuck 231 in sequence, and is connected to the output end of the jacking drive 221. In actual application, the jacking drive 221 generates a driving force to drive the jacking rod 222 to jack up or down. When the material moving mechanism 1 moves the product to be welded to the working position of the bearing clamping assembly 23, the jacking drive 221 drives the jacking rod 222 to jack up to the position, so as to support and position the product to be welded, so that the first lower boss 021 of the lower magnetic shell 02 corresponds to the stepped boss 23231 of the inner sidewall of the clamp 232, and the first lower boss 021 is clamped on the stepped boss 23231 after the bearing clamping assembly 23 is folded. After welding is completed, the jacking drive 221 drives the jacking rod 222 to jack up again, so as to jack up the welded product, so that the material moving mechanism 1 can unload the welded product.

[0047] Preferably, the pressing block 242 has an emptying groove 2421, and the parts of the protruding part of the upper cover 01 are located in the emptying groove 2421 when the pressing block 242 presses down the pressing block 233, so as to avoid damage to the parts of the protruding part of the upper cover 01 when the pressing block 242 presses down.

[0048] Preferably, the end of the pressing block 242 away from the moving plate 243 has a pressing convex ring 2422, and correspondingly, the pressing block 233 has a groove, the shape of the groove is matched with the shape of the pressing convex ring 2422, and when the pressing block 242 presses down the pressing block 233, the pressing convex ring 2422 is inserted into the groove, so as to ensure that the pressing block 242 and the pressing block 233 are coaxial and avoid deviation.

[0049] Preferably, the pressing assembly 24 further comprises a rotating member 244. The rotating member 244 is arranged in the pressing block 242, and the output end of the pressing driving member 241 is connected to the rotating member 244. In this embodiment, the rotating member 244 is a roller bearing, which has the advantages of small starting torque, high rotation accuracy and convenient selection, so that when the rotating assembly 25 drives the bearing clamping assembly 23 to rotate, the pressing block 242 and the bearing clamping assembly 23 can rotate synchronously, and the pressing force of the pressing block 242 on the pressing block 233 remains unchanged.

[0050] Preferably, the guide assembly 21 further comprises a buffer 213. The buffer 213 is arranged on the guide rod 212 and the mounting plate 211. When the pressing driving member 241 drives the pressing block 242 to move close to or away from the bearing clamping assembly 23, the buffer 213 buffers the moving plate 243, so as to avoid the driving force of the pressing driving member 241 being too large, and the pressing block 242 colliding with the pressing block 233 or the moving plate 243 colliding with the mounting plate 211.

[0051] Specifically, the rotating assembly 25 comprises a rotating disc 251 and a rotating driving member 252. The rotating disc 251 is arranged on the mounting plate 211. The rotating driving member 252 is arranged on the mounting plate 211, and the output end of the rotating driving member 252 is connected to the rotating disc 251. The rotating driving member 252 is an electric motor. In specific applications, the rotating driving member 252 generates a driving force to drive the rotating disc 251 to rotate, thereby driving the bearing clamping assembly 23 arranged on the rotating disc 251 to rotate, and further driving the bearing clamping assembly 23 and the to-be-welded product fixed by the pressing assembly 24 to rotate. During the rotation, the welding head 33 of the welding mechanism 3 extends from the opening 2300 opposite to the pressing block 233 of the clamp 232 to pre-weld the pre-welding points of the product. In this embodiment, the number of pre-welding points is nine, and correspondingly, the opening 2300 of the clamp 232 and the pressing block 233 also has nine openings. Of course, the number of pre-welding points can be increased or decreased according to actual needs. The above is only one embodiment of the present application, and should not be limited thereto.

[0052] Referring back to Figure 4The welding mechanism 3 comprises a first position adjusting member 31, a second position adjusting member 32, a rotating platform (not shown in the figure) and a welding head 33. The first position adjusting member 31 is arranged on one side of the welding fixture 2. The second position adjusting member 32 is arranged on the first position adjusting member 31. The rotating platform is arranged on the second position adjusting member 32. The welding head 33 is arranged on the rotating platform. The first position adjusting member 31 can drive the welding head 33 to move in the horizontal direction, so as to control the focal length of the welding head 33. The second position adjusting member 32 can drive the welding head 33 to move in the vertical direction, so as to control the welding head 33 to keep consistent with the welding point of the product to be welded. In the embodiment, the first position adjusting member 31 and the second position adjusting member 32 can be selected as a single-axis manipulator, or can be selected as a mode that a hand wheel drives a lead screw to rotate, so as to drive a sliding plate to slide, thereby realizing the adjustment of the position of the welding head 33. The rotating platform can drive the welding head 33 to rotate, so as to control the pitch angle of the welding head 33. After the welding fixture 2 fixes the product to be welded, the welding head 33 emits laser to realize the welding of the product to be welded. Preferably, the welding head 33 is provided with a coaxial CCD monitoring function, so as to ensure the accuracy of the welding position.

[0053] Referring back to Figure 4 The air blowing and dust removing mechanism 4 comprises an air blowing pipe 41 and a dust removing pipe 42. The air blowing pipe 41 and the dust removing pipe 42 are arranged on the guide rod 212. The air outlet of the air blowing pipe 41 faces the welding position. The air inlet of the dust removing pipe 42 faces the welding position. During the welding, an external air supply device connected with the air blowing pipe 41 provides protective gas, and the air blowing pipe 41 blows the protective gas to the welding position, so as to ensure the welding quality. An external air suction device connected with the dust removing pipe 42 sucks air, and sucks away the welding slag generated in the welding process, so as to ensure the cleanliness of the product.

[0054] The application further provides a welding method, which comprises the following steps:

[0055] The material moving mechanism 1 moves the product to be welded to the work position of the welding fixture 2;

[0056] The pressing assembly 24 of the welding fixture 2 presses the bearing and clamping assembly 23 to fix the product to be welded;

[0057] The rotating assembly 25 drives the product to be welded to rotate

[0058] The welding mechanism 3 performs spot welding on the product to be welded;

[0059] The air blowing and dust removing mechanism 4 blows protective gas and removes dust;

[0060] The material moving mechanism moves the welded product to the discharging end.

[0061] In a specific application, the material moving mechanism 1, the welding jig 2, the welding mechanism 3 and the blowing dust removing mechanism 4 are electrically connected to the control system of the welding device. The control system of the welding device controls the material moving mechanism 1, the welding jig 2, the welding mechanism 3 and the blowing dust removing mechanism 4 to achieve the effect of automatic control of the welding device. Of course, the control system of the welding device can be any one of an industrial computer, a PLC or a single-chip microcomputer, which will not be described here.

[0062] In summary, in one or more embodiments of the present application, the welding device has a simple structure. The bearing clamping assembly and the pressing assembly are used to clamp and fix the product to be welded, so that the product to be welded is fully pressed and there is no gap. The welding mechanism can accurately weld the product to be welded, ensuring the welding quality. At the same time, the problem of the welding laser entering the contactor from the gap and damaging the internal parts and lines is avoided.

[0063] The above description is only an embodiment of the present application and is not intended to limit the present application. The present application can be variously changed and modified by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A welding device, characterized by The utility model relates to a welding device and a welding method thereof, and the welding device comprises a material moving mechanism (1), a welding jig (2) and a welding mechanism (3), the welding jig (2) comprises a bearing and clamping assembly (23) and a pressing assembly (24), the bearing and clamping assembly (23) and the pressing assembly (24) are oppositely arranged on a material moving path of the material moving mechanism (1), and the welding mechanism (3) faces the welding jig (2). The material moving mechanism (1) moves a product to be welded to a working position of the welding jig (2), the pressing assembly (24) presses the bearing and clamping assembly (23) to fix the product to be welded, and the welding mechanism (3) welds the product to be welded. The bearing and clamping assembly (23) comprises a chuck (231), a clamp (232) and a pressing block (233), the clamp (232) is arranged on the chuck (231), the pressing block (233) is connected with a guide column (234), and the guide column (234) is inserted into the clamp (232); the inner side wall of the clamp (232) has a stepped platform (2321), and an arc-shaped positioning strip (2322) is arranged on one end of the clamp (232) close to the pressing block (233). The pressing assembly (24) comprises a pressing driving element (241) and a pressing block (242), the output end of the pressing driving element (241) is connected with a moving plate (243), and the pressing block (242) is arranged on the moving plate (243). One end of the pressing block (242) away from the moving plate (243) has a pressing convex ring (2422), the pressing block (233) has a groove, the shape of the groove is matched with the shape of the pressing convex ring (2422), and when the pressing block (242) presses the pressing block (233), the pressing convex ring (2422) is inserted into the groove. The welding jig (2) further comprises a rotating assembly (25), and the bearing and clamping assembly (23) is arranged on the rotating assembly (25). The welding jig (2) further comprises a jacking assembly (22), and the jacking assembly (22) penetrates through the bearing and clamping assembly (23). The welding jig (2) further comprises a guide assembly (21), and the rotating assembly (25) and the pressing assembly (24) are arranged on the guide assembly (21). The welding mechanism (3) comprises a first position adjusting element (31) and a welding head (33), and the welding head (33) is arranged on the first position adjusting element (31). The welding mechanism (3) further comprises a second position adjusting element (32), the second position adjusting element (32) is arranged on the first position adjusting element (31), and the welding head (33) is arranged on the second position adjusting element (32). The welding mechanism (3) further comprises a rotating platform, the rotating platform is arranged on the second position adjusting element (32), and the welding head (33) is arranged on the rotating platform.

2. The welding device of claim 1, wherein, The material moving mechanism (1) comprises a moving assembly (11) and a clamping assembly (12), and the clamping assembly (12) is arranged on the moving assembly (11).

3. The welding device of claim 1, wherein, ​ 4. The welding device of claim 1, wherein, Further comprising a blowing dust removal mechanism (4); the blowing dust removal mechanism (4) is arranged on the welding jig (2).

5. A method of welding, characterized by The welding device comprises the welding device according to any one of claims 1-4, and the welding method of the welding device comprises the following steps: The material moving mechanism (1) moves the product to be welded to the welding jig (2); The lower pressing assembly (24) of the welding jig (2) presses the bearing and clamping assembly (23) to fix the product to be welded; The rotating assembly (25) drives the product to be welded to rotate; The welding mechanism (3) spot-welds the product to be welded; The blowing dust removal mechanism (4) blows protective gas and removes dust; The material moving mechanism (1) moves the welded product to the discharging end.

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