Welding device

Abstract

The utility model discloses a welding device which comprises a welding assembly and a pressing mechanism, and the welding assembly comprises a welding work head used for emitting laser beams. The pressing mechanism comprises a fixing frame, a lifting frame and a pressing head assembly, the lifting frame can be arranged in a vertical lifting mode relative to the fixing frame, the pressing head assembly is detachably arranged on the lifting frame, the pressing head assembly comprises a welding pressing head, and the welding pressing head is provided with a light inlet channel penetrating in the vertical direction. The pressing mechanism has a first state and a second state, when the pressing mechanism is in the first state, the pressing head assembly is located at a first height, and a distance is formed between the pressing head assembly and the workpiece; when the pressing mechanism is in the second state, the pressing head assembly is in the second height lower than the first height, the welding pressing head abuts against the workpiece, the to-be-welded area of the workpiece is located in the projection, on the workpiece, of the light inlet channel, and the pressing head assembly can be rapidly replaced.

Description

Technical Field

[0001] The utility model relates to a welding device. Background Art

[0002] A welding device is usually provided with a pressure head for pressing the workpiece to be welded to ensure the normal progress of the welding operation. There are great differences in the shapes and sizes of different workpieces, and there are also great differences in the position, size, shape, etc. of their welding areas. Therefore, one pressure head cannot be suitable for different workpieces. Therefore, when using the same welding device to perform welding processing on different workpieces, the pressure head often needs to be replaced. However, in the prior art, the operation of replacing the pressure head is often very complicated and takes a lot of time, thus affecting the processing efficiency. Utility Model Content

[0003] The utility model aims to provide a new welding device.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a welding device, comprising:

[0005] A welding assembly, used for welding a workpiece located at a welding station, the welding assembly at least comprising a welding work head for emitting a laser beam;

[0006] The clamping mechanism comprises a fixed frame, a lifting frame and a pressing head assembly, wherein the lifting frame can be lifted up and down relative to the fixed frame, the pressing head assembly is detachably arranged on the lifting frame, the pressing head assembly at least comprises a welding pressing head, and the welding pressing head is provided with a light inlet channel penetrating in the up and down direction,

[0007] The welding work head, the pressure head assembly and the welding station are arranged in sequence from top to bottom, and the clamping mechanism has a first state and a second state.

[0008] When the clamping mechanism is in the first state, the pressure head assembly is at a first height, and there is a distance between the pressure head assembly and the workpiece in the up and down directions; when the clamping mechanism is in the second state, the pressure head assembly is at a second height lower than the first height, the welding pressure head abuts against the workpiece, and the area to be welded of the workpiece is located within the projection of the light input channel on the workpiece.

[0009] In some embodiments, the pressure head assembly further includes a pressure plate, the welding pressure head is disposed on the pressure plate, the pressure plate is detachably connected to the lifting frame, and the pressure plate can be slidably disposed relative to the lifting frame along a first direction.

[0010] Preferably, the lifting frame includes two lifting plates spaced apart along a second direction, the second direction is perpendicular to the first direction, the lifting plates are provided with connecting grooves extending along the first direction, along the second direction, the notches of the two connecting grooves are arranged opposite to each other, and the two side portions of the pressure plate are respectively inserted into the two connecting grooves in a sliding manner.

[0011] Furthermore, a positioning hole is provided on the side of the pressure plate, and a locking piece is movably provided on the lifting plate. The locking piece has a locking portion. When the pressure plate is installed on the lifting frame, the locking portion can penetrate into the connecting groove and be inserted into the positioning hole.

[0012] In some embodiments, the clamping mechanism further includes a driving assembly for driving the lifting frame to move up and down, and the driving assembly includes:

[0013] A driving shaft, the driving shaft extending in a horizontal direction, and the driving shaft being rotatably arranged on the fixing frame around its own axis;

[0014] A driving motor, used for driving the driving shaft to rotate around its own axis, and the driving motor is fixed on the fixing frame;

[0015] A driving gear, wherein the driving gear is fixedly mounted on the driving shaft;

[0016] A rack extends in a vertical direction and is fixed on the lifting frame, and the rack is meshed with the driving gear.

[0017] Preferably, the lifting frame comprises two lifting plates spaced apart from each other, and the pressure head assembly is arranged between the two lifting plates.

[0018] Each lifting plate is fixedly provided with a rack, and the driving shaft is fixedly provided with two driving gears, and the two driving gears are respectively meshed with the two racks.

[0019] Preferably, the lifting frame is provided with a slide groove extending in the up-down direction, and the drive shaft is slidably inserted into the slide groove. When the clamping mechanism is in the first state, the drive shaft is located at the lower part of the slide groove; when the clamping mechanism is in the second state, the drive shaft is located at the upper part of the slide groove.

[0020] In some embodiments, a first air hole and a second air hole connected to the light inlet channel are provided at the lower portion of the welding pressure head, wherein the first air hole is connected to the air blowing pipe, and the second air hole is connected to the air exhaust pipe.

[0021] Preferably, the first pore and the second pore are arranged opposite to each other, and / or the aperture of the first pore is smaller than the aperture of the second pore.

[0022] In some embodiments, the welding ram includes a mounting plate and a ram body, the mounting plate is fixed on the ram, the ram body can be movably arranged relative to the mounting plate in a vertical direction, an elastic member is arranged between the ram body and the mounting plate, and the elastic member is configured to provide resistance to prevent the ram body from moving upward relative to the mounting plate.

[0023] Due to the application of the above technical scheme, the utility model has the following advantages compared with the prior art: the welding device of the utility model, the pressure head assembly is detachably arranged on the lifting frame. When welding different workpieces, the pressure head assembly can be quickly removed from the lifting frame, and the new pressure head assembly can also be quickly assembled on the lifting frame, thereby completing the replacement of the pressure head assembly. The replacement principle is simple and the operation is convenient, which can save replacement time and improve the processing efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Attached Figure 1 It is a three-dimensional schematic diagram of a partial structure of a welding device according to a specific embodiment of the utility model;

[0025] Attached Figure 2 is a schematic diagram of the three-dimensional structure when the pressing mechanism is in the first state;

[0026] Attached Figure 3 is a schematic diagram of the three-dimensional structure when the pressing mechanism is in the second state;

[0027] Attached Figure 4 For attachment Figure 3 Side view of

[0028] Attached Figure 5 For attachment Figure 3 Schematic diagram of the three-dimensional structure from another perspective;

[0029] Attached Figure 6 For attachment Figure 5 Schematic diagram of the three-dimensional structure after removing the pressure head assembly;

[0030] Attached Figure 7 For attachment Figure 6 The enlarged schematic diagram of point A in the middle;

[0031] Attached Figure 8 For attachment Figure 6 Side view of

[0032] Attached Fig. 9 is a three-dimensional schematic diagram of the pressure head assembly of this embodiment;

[0033] Attached Fig.10 For attachment Fig. 9 Schematic diagram of the three-dimensional structure after flipping 180 degrees up and down;

[0034] Attached Fig.11 For attachment Fig. 9 A top view of

[0035] Attached Fig.12 For the attachment Fig.11 Cross-sectional view along the BB direction;

[0036] Wherein: 10, workpiece; 100, welding station; 200, welding assembly; 201, welding work head; 300, clamping mechanism; 1, fixed frame; 11, side bracket; 111, bearing; 112, sliding member; 12, top plate; 2, lifting frame; 21, lifting plate; 211, connecting part; 211a, first connecting part; 211b, second connecting part; 212, connecting groove; 213, slide groove; 22, connecting frame; 23, locking member; 231, locking part; 24, slide rail; 31, driving shaft; 32, driving motor; 33, driving gear; 34, rack; 4, pressing plate; 41, positioning hole; 5, welding pressure head; 51, mounting plate; 52, pressure head body; 521, light inlet channel; 522, first air hole; 523, second air hole; 61, blowing pipe; 62, exhaust pipe. DETAILED DESCRIPTION

[0037] The technical solution of the utility model is described in detail below in conjunction with the accompanying drawings and specific embodiments, so that the advantages and features of the utility model can be more easily understood by those skilled in the art. Obviously, the embodiments described in this application are only part of the embodiments of the application, rather than all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of this application.

[0038] See also Figure 1 A welding device is shown, which is provided with a welding station 100 and a welding assembly 200 located above the welding station 100, wherein the welding assembly 200 is used to perform welding processing on a workpiece 10 located at the welding station 100, wherein the welding assembly at least includes a welding work head 201 for emitting a laser beam, and performs welding operation by means of the laser beam. The welding device is also provided with a clamping mechanism 300, which is used to clamp and fix the workpiece 10 located at the welding station 100 to ensure that the welding operation is performed normally.

[0039] The clamping mechanism 300 includes a fixed frame 1, a lifting frame 2 and a driving assembly. The lifting frame 2 can be raised and lowered relative to the fixed frame 1, and the driving assembly is used to drive the lifting frame 2 to rise and fall. The clamping mechanism 300 also includes a pressure head assembly, which is detachably arranged on the lifting frame 2. The welding work head 201, the pressure head assembly and the welding station 100 are arranged in sequence from top to bottom. The pressure head assembly at least includes a welding pressure head 5, and the welding pressure head is provided with a light inlet channel 521 penetrating in the up-down direction, and the light inlet channel 521 passes the laser beam downward.

[0040] The clamping mechanism 300 has at least a first state and a second state. When the clamping mechanism 300 is in the first state, the pressure head assembly is at a first height, and there is a gap between the pressure head assembly and the workpiece 10 in the up-down direction. At this time, the pressure head assembly can be adjusted or replaced, the workpiece 10 can be transferred and replaced, or the workpiece 10 can be adjusted. When the clamping mechanism 300 is in the second state, the pressure head assembly has a second height lower than the first height, the welding pressure head 5 is against the workpiece 10, and the area to be welded of the workpiece 10 is located within the projection of the light inlet channel 521 on the workpiece 10, and the workpiece 10 can be welded at this time.

[0041] Since the welding area positions, sizes, shapes, etc. of different workpieces are quite different, the corresponding pressure head assemblies are also different. Therefore, when using the same welding device to weld different types of workpieces, the pressure head assembly needs to be replaced. In this embodiment, the pressure head assembly can be disassembled and assembled relative to the lifting frame 2. Specifically, the pressure head assembly can be slidably arranged relative to the lifting frame 2 along a first direction. By driving the pressure head assembly to slide, it can be quickly disassembled and assembled, so that the pressure head assembly can be quickly replaced.

[0042] In this embodiment, the pressure head assembly also includes a pressure plate 4, and a welding pressure head 5 is arranged on the pressure plate 4. The pressure plate 4 is slidably arranged on the lifting frame 2 along a first direction. By driving the pressure plate 4 to slide along the first direction, the pressure head assembly can be detached from the lifting frame 2 or installed on the lifting frame 2. A plurality of welding pressure heads 5 can be arranged on the pressure plate 4. The number and position of the welding pressure heads 5 correspond to the setting of the welding area on the workpiece. By arranging a plurality of welding pressure heads 5, a plurality of welding areas can be clamped at one time, so that there is no need to clamp the welding areas one by one, thereby improving the processing efficiency. And by replacing the pressure head assembly, not only the type of the welding pressure head 5 can be replaced, but also the setting method of the welding pressure head 5 can be replaced. In this embodiment, refer to Fig. 9 , Fig.10 As shown, a total of four welding pressure heads 5 are arranged on the pressure plate 4 .

[0043] In this embodiment, the lifting frame 2 includes two lifting plates 21 spaced apart along the second direction, the second direction is perpendicular to the first direction, and the pressure head assembly is arranged between the two lifting plates 21. Figure 6 , Figure 8 As shown, the lifting frame 2 further includes a connecting frame 22 fixedly arranged between the two lifting plates 21, the connecting frame 22 extends along the second direction, and the connecting frame 22 includes two groups arranged in parallel along the first direction, and the two ends of the connecting frame 22 are respectively fixedly connected to the two lifting plates 21. The arrangement of the connecting frame 22 improves the integrity and stability of the lifting frame 2, so that the lifting plates 21 on both sides can be raised and lowered synchronously.

[0044] In this embodiment, along the second direction, the two side portions located on different sides of the pressing plate 4 are respectively connected to the two lifting plates 21 in a sliding manner. Specifically, the lifting plate 21 is provided with a connecting groove 212 extending along the first direction, and along the second direction, the notches of the two connecting grooves 212 are arranged opposite to each other, and the two side portions of the pressing plate 4 are respectively inserted into the two connecting grooves 212 in a sliding manner. The pressing plate 4 can be separated from the connecting groove 212, thereby realizing the disassembly of the pressing head assembly; the two side portions of the pressing plate 4 are inserted into the connecting groove 212 to realize the installation of the pressing head assembly, which is simple to operate and can realize the rapid replacement of the pressing head assembly.

[0045] In this embodiment, a fixing structure is provided between the pressing plate 4 and the lifting frame 2, and the pressing plate 4 and the lifting frame 2 can be fixed together by the fixing structure to prevent the relative movement of the two, thereby ensuring that the pressure head assembly can maintain stability when pressing and fixing the workpiece 10. Specifically, the fixing structure includes a positioning hole 41 provided on the side of the pressing plate 4, and a locking member 23 movably provided on the lifting plate 21. The locking member 23 has a locking portion 231, and when the pressing plate 4 is installed on the lifting frame 2, the locking portion 231 can penetrate into the connecting groove 212 and be inserted into the positioning hole 41, thereby fixing the pressing plate 4.

[0046] In this embodiment, see Fig. 9 , Fig.10 As shown, along the second direction, both sides of the pressing plate 4 are provided with positioning holes 41, and the positioning holes 41 penetrate the pressing plate 4 along the up-down direction. Figure 6 , Figure 7As shown, a connection portion 211 is provided on the inner side of the lifting plate 21. The connection portion 211 includes a first connection portion 211a extending along a first direction, and a second connection portion 211b fixedly arranged below the first connection portion 211a. The cross section of the second connection portion 211b is L-shaped. The first connection portion 211a and the second connection portion 211b together form a U-shaped groove, which is the above-mentioned connection groove 212. The locking member 23 extends in the up-down direction and is movably arranged on the first connection portion 211a along the axial direction. Specifically, the locking member 23 is a locking pin. The first connection portion 211a has a through hole connected to the connection groove 212. The lower part of the locking pin constitutes the above-mentioned locking portion 231. The locking portion 231 can pass through the through hole and penetrate into the connection groove 212. When the pressing plate 4 is assembled on the lifting frame 2, the locking member 23 is driven to move downward so that the locking portion 231 is inserted into the positioning hole 41, so that the pressing plate 4 can be fixed.

[0047] In this embodiment, the driving assembly includes a driving shaft 31, a driving motor 32, a driving gear 33 and a rack 34. The driving shaft 31 extends in the horizontal direction and is rotatably arranged on the fixed frame 1 around its own axis; the driving motor 32 is used to drive the driving shaft 31 to rotate around its own axis, and the driving motor 32 is fixed on the fixed frame 1; the driving gear 33 is fixed on the driving shaft 31; the rack 34 extends in the vertical direction and is fixed on the lifting frame 2, and the rack 34 and the driving gear 33 are arranged to mesh with each other. Driven by the driving motor 32, the driving shaft 31 drives the driving gear 33 to rotate, and through the cooperation between the driving gear 33 and the rack 34, the rack 34 drives the lifting frame 2 to move up and down.

[0048] In this embodiment, each lifting plate 21 is provided with a rack 34, see Figure 3 , Figure 4 As shown, two racks 34 are respectively fixed on the inner sides of the two lifting plates 21, and two driving gears 33 are fixed on the driving shaft 31, and the two driving gears 33 are respectively meshed with the two racks 34. By providing two sets of driving gears 33 and driving racks 34, the lifting frame 2 can be lifted up and down more stably, and the synchronous lifting of the two lifting plates 21 can be better maintained.

[0049] In this embodiment, the fixed frame 1 includes two side brackets 11 spaced apart along the second direction, the lifting frame 2 is arranged between the two side brackets 11, and the two lifting plates 21 are respectively connected to the two side brackets 11 in a sliding manner in the up-down direction. Specifically, one of the lifting plate 21 and the side bracket 11 is provided with a slide rail 24 extending in the up-down direction, and the other is provided with a sliding member 112, and the sliding member 112 is slidably arranged on the slide rail 24. In this embodiment, the slide rail 24 is fixedly arranged on the outer side of the lifting plate 21, and the sliding member 112 is fixedly arranged on the side bracket 11. Through the cooperation between the sliding member 112 and the slide rail 24, the lifting frame 2 can slide up and down relative to the fixed frame 1. The cooperation mode of the slide rail 24 and the sliding member 112 also provides a motion guide for the up-and-down lifting of the lifting frame 2, thereby improving the processing accuracy.

[0050] In this embodiment, the fixing frame 1 further includes a top plate 12 extending in the horizontal direction, and the two side brackets 11 are fixed to the lower part of the top plate 12. Figure 2 , Figure 3 As shown, a through hole is provided on the top plate 12 which penetrates in the up-down direction. The through hole is rectangular. Two side brackets 11 are provided on opposite sides of the through hole. The lifting frame 2 can move upward and partially pass through the through hole.

[0051] In this embodiment, the drive shaft 31 is rotatably disposed between the two side brackets 11. Figure 5 As shown, the drive motor 32 is fixed on one side bracket 11, and a bearing 111 is provided on the other side bracket 11. One end of the drive shaft 31 is coaxially connected to the output shaft of the drive motor 32, and the other end of the drive shaft 31 is passed through the bearing 111. The drive motor 32 is used for driving, and the drive gear 33 and the rack 34 are used to cooperate, so that the pressure head assembly can be adjusted more precisely, so that the pressing operation can be performed more accurately.

[0052] In this embodiment, the driving shaft 31 passes through the two lifting plates 21 along the axial direction. Figure 2 , Figure 6 As shown, the lifting plate 21 is provided with a slide groove 213 extending in the up-down direction, and the drive shaft 31 is slidably arranged in the slide groove 213. When the clamping mechanism 300 is in the first state, the drive shaft 31 is located at the lower part of the slide groove 213; when the clamping mechanism 300 is in the second state, the drive shaft 31 is located at the upper part of the slide groove 213. The setting of the slide groove 213 not only prevents the drive shaft 31 from affecting the up-down movement of the lifting plate 21, but also provides a guide for the up-down movement of the lifting frame 2, and also limits the displacement of the up-down movement of the lifting frame 2 to prevent the lifting frame 2 from moving beyond the range.

[0053] In this embodiment, the welding ram 5 includes a mounting plate 51 and a ram body 52, wherein the mounting plate 51 is fixed on the pressing plate 4, and when the clamping mechanism 300 is in the second state, the bottom of the ram body 52 abuts against the workpiece. In this embodiment, the ram body 52 can be arranged to move relative to the mounting plate 51 in the vertical direction, and an elastic member (not shown in the figure) is arranged between the ram body 52 and the mounting plate 51, and the elastic member is used to prevent the ram body 52 from moving upward relative to the mounting plate 51. In this way, when the ram assembly moves downward and performs a clamping operation, when the ram body 52 contacts the workpiece 10, the ram body 52 can move upward relative to the mounting plate 51 to avoid damage to the workpiece 10 due to excessive contact, and the elastic member can play a buffering role, and under the action of the elastic member, the ram body 52 can be pressed against the workpiece 10.

[0054] In this embodiment, the mounting plate 51 is fixedly arranged on the upper part of the pressing plate 4, and the elastic member is arranged between the lower part of the mounting plate 51 and the pressing head body 52. ​​Specifically, the elastic member is a compression spring. When the pressing head body 52 approaches the mounting plate 51 upward, the compression spring is compressed and prevents the pressing head body 52 from moving upward. In other embodiments, the mounting plate 51 is arranged on the lower part of the pressing plate 4, and the elastic member is arranged between the upper part of the mounting plate 51 and the pressing head body 52. ​​In this case, the elastic member is a tension spring. In other embodiments, the welding pressing head 5 is not provided with a mounting plate 51, and the pressing head body 52 is movably arranged on the pressing plate 4 in the vertical direction, and the elastic member is arranged between the pressing head body 52 and the pressing plate 4.

[0055] In this embodiment, a guide structure is provided between the mounting plate 51 and the pressure head body 52 to provide guidance for the up and down movement of the pressure head body 52. ​​The guide structure includes a guide column provided on one of the mounting plate 51 and the pressure head body 52, and a guide hole provided on the other, and the guide column is inserted in the guide hole. The guide structure may also adopt other structures in the prior art as long as it can achieve the guiding function.

[0056] In this embodiment, see Fig.11 , Fig.12 As shown, when the clamping mechanism 300 is in the second state, the bottom of the welding head 5 rests on the workpiece, the welding area is located at the bottom of the light inlet channel 521, and the laser passes through the light inlet channel 521 and welds the welding area at the bottom.

[0057] In this embodiment, the lower part of the welding pressure head 5 is provided with a first air hole 522 and a second air hole 523 connected to the light inlet channel 521, wherein the first air hole 522 is connected to the air blowing pipe 61, and the second air hole 523 is connected to the air extraction pipe 62. In the process of welding operation, a large amount of welding slag will be generated in the processing area. If it is not cleaned in time, it will affect the subsequent welding. In this embodiment, air can be blown into the light inlet channel 521 through the first air hole 522, and air can be extracted outward through the second air hole 523, so that impurities such as welding slag can be extracted. At the same time, a protective gas can also be blown in through the first air hole 522 to ensure the normal progress of the welding operation. The first air hole 522 and the second air hole 523 are both arranged at the lower part of the pressure head body 52, so that it is closer to the welding area, so that the welding slag can be effectively removed.

[0058] In this embodiment, the first air hole 522 and the second air hole 523 are arranged opposite to each other, so that the blowing direction is the same as the exhaust direction, which is more efficient. In this embodiment, the aperture of the first air hole 522 is smaller than the aperture of the second air hole 523, so that the wind speed of the blown gas can be increased, the welding slag can be prevented from blocking the first air hole 522, and the discharge of the welding slag can be facilitated.

[0059] In summary, in the welding device of this embodiment, the pressure head assembly slides along the first direction and is detachably arranged on the lifting frame 2. When welding different workpieces, the pressure head assembly can be removed from the lifting frame 2 by driving it to slide along the first direction, and a new pressure head assembly can also be slid and assembled onto the lifting frame 2 along the first direction, thereby completing the replacement of the pressure head assembly. The replacement principle is simple and the operation is convenient, which can save replacement time and improve the processing efficiency of the device.

[0060] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A welding device, characterized in that: include: A welding assembly, used for welding a workpiece located at a welding station, the welding assembly at least comprising a welding work head for emitting a laser beam; The clamping mechanism comprises a fixed frame, a lifting frame and a pressing head assembly, wherein the lifting frame can be lifted up and down relative to the fixed frame, the pressing head assembly is detachably arranged on the lifting frame, the pressing head assembly at least comprises a welding pressing head, and the welding pressing head is provided with a light inlet channel penetrating in the up and down direction, The welding work head, the pressure head assembly and the welding station are arranged in sequence from top to bottom, and the clamping mechanism has a first state and a second state. When the clamping mechanism is in the first state, the pressure head assembly is at a first height, and there is a distance between the pressure head assembly and the workpiece in the up and down directions; when the clamping mechanism is in the second state, the pressure head assembly is at a second height lower than the first height, the welding pressure head abuts against the workpiece, and the area to be welded of the workpiece is located within the projection of the light input channel on the workpiece.

2. The welding device according to claim 1, characterized in that: The pressure head assembly also includes a pressure plate, the welding pressure head is arranged on the pressure plate, the pressure plate is detachably connected to the lifting frame, and the pressure plate can be slidably arranged relative to the lifting frame along a first direction.

3. The welding device according to claim 2, characterized in that: The lifting frame includes two lifting plates spaced apart along a second direction, the second direction being perpendicular to the first direction, the lifting plates being provided with connecting grooves extending along the first direction, the notches of the two connecting grooves being arranged opposite to each other along the second direction, and the two side portions of the pressing plate being respectively inserted into the two connecting grooves in a sliding manner.

4. The welding device according to claim 3, characterized in that: A positioning hole is provided on the side of the pressing plate, and a locking piece is movably provided on the lifting plate. The locking piece has a locking portion. When the pressing plate is installed on the lifting frame, the locking portion can penetrate into the connecting groove and be inserted into the positioning hole.

5. The welding device according to claim 1, characterized in that: The clamping mechanism also includes a driving assembly for driving the lifting frame to move up and down, and the driving assembly includes: A driving shaft, the driving shaft extending in a horizontal direction, and the driving shaft being rotatably arranged on the fixing frame around its own axis; A driving motor, used for driving the driving shaft to rotate around its own axis, and the driving motor is fixed on the fixing frame; A driving gear, wherein the driving gear is fixedly mounted on the driving shaft; A rack extends in a vertical direction and is fixed on the lifting frame, and the rack is meshed with the driving gear.

6. The welding device according to claim 5, characterized in that: The lifting frame includes two lifting plates arranged at intervals, and the pressure head assembly is arranged between the two lifting plates. Each lifting plate is fixedly provided with a rack, and the driving shaft is fixedly provided with two driving gears, and the two driving gears are respectively meshed with the two racks.

7. The welding device according to claim 5, characterized in that: The lifting frame is provided with a slide groove extending in the up-down direction, and the drive shaft is slidably inserted into the slide groove. When the clamping mechanism is in the first state, the drive shaft is located at the lower part of the slide groove; when the clamping mechanism is in the second state, the drive shaft is located at the upper part of the slide groove.

8. The welding device according to claim 1, characterized in that: A first air hole and a second air hole connected to the light inlet channel are provided at the lower part of the welding pressure head, wherein the first air hole is connected to the air blowing pipe, and the second air hole is connected to the air exhaust pipe.

9. The welding device according to claim 8, characterized in that: The first pore is arranged opposite to the second pore, and / or the aperture of the first pore is smaller than the aperture of the second pore.

10. The welding device according to claim 2, characterized in that: The welding ram includes a mounting plate and a ram body, wherein the mounting plate is fixed on the ram body, and the ram body can be movably arranged relative to the mounting plate in a vertical direction. An elastic member is arranged between the ram body and the mounting plate, and the elastic member is configured to provide resistance to prevent the ram body from moving upward relative to the mounting plate.

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