Laser welding device and welding production line

Abstract

The invention relates to a laser welding device and a welding production line, and relates to the technical field of laser welding related equipment. The two grabbing mechanisms are arranged on the workbench in a spaced mode and used for clamping and rotating a to-be-welded part towards the outer side; the two welding mechanisms are correspondingly arranged on the outer sides of the grabbing mechanisms correspondingly and used for welding the to-be-welded parts; and the transferring mechanism is used for conveying the to-be-welded part from the to-be-grabbed position of one grabbing mechanism to the to-be-grabbed position of the other grabbing mechanism. Due to the fact that the two grabbing mechanisms are arranged on the workbench in a spaced mode and the two welding mechanisms are correspondingly arranged on the outer sides of the grabbing mechanisms respectively, two to-be-welded parts can be grabbed and welded at the same time, the rotating directions of the grabbing mechanisms are different, the situation of mutual interference is avoided, the welding machining efficiency is improved, and the welding quality is improved. The problems that in the operation process in the prior art, workers need to continuously take and place materials and need to turn over a circuit board, the labor cost is increased, and the welding efficiency is reduced are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of laser welding related equipment, and in particular to a laser welding device and a welding production line. Background Art

[0002] During the production of automotive pressure and temperature sensor products, it is necessary to weld the thermistor and circuit board to ensure the normal use of the product in vehicle production.

[0003] In the prior art, a constant temperature electric soldering iron welding method is generally adopted, and the manual material collection and discharge are all manually operated. During the operation, the operator first needs to take out a thermistor and a circuit board from the turnover material box, pass the thermistor through the two welding holes of the circuit board, and then manually place the assembly in the welding fixture. The operator holds the environmentally friendly solder wire in one hand, aligns the tin wire with the A side of the welding hole pad, and holds the electric soldering iron in the other hand to melt the tin wire to ensure that the thermistor and the A side of the circuit board are firmly connected together through solder. After the welding is completed, the operator turns over the circuit board, places the assembly after the A side is welded in the fixing fixture, and welds the B side. After the A and B sides are welded, the operator is required to visually inspect the welding appearance, and place them in qualified or unqualified material trays according to the welding appearance results. The welding process of a product is completed.

[0004] However, during the operation, employees need to continuously take and put materials, flip the circuit boards, and complete double-sided welding, which is labor-intensive, increases labor costs, and reduces welding efficiency. Summary of the invention

[0005] The present application provides a laser welding device and a welding production line, which can solve the problems in the prior art that during the operation process, employees need to continuously take and put materials, flip the circuit boards, and complete double-sided welding, which is labor-intensive, increases labor costs, and reduces welding efficiency.

[0006] In a first aspect, an embodiment of the present application provides a laser welding device, comprising:

[0007] Workbench;

[0008] Two grasping mechanisms are arranged on the workbench at intervals and are used to clamp and rotate the workpiece to be welded outwardly;

[0009] Two welding mechanisms, the two welding mechanisms are respectively arranged on the outside of the grasping mechanism and are used for welding the parts to be welded;

[0010] The transfer mechanism is used to transport the workpiece to be welded from a to-be-grasped position of one grasping mechanism to a to-be-grasped position of another grasping mechanism.

[0011] In one embodiment, the workbench is provided with two crawlers arranged at intervals, and the transfer mechanism is used to be connected to the crawlers to move the parts to be welded.

[0012] In one embodiment, a lifting plate corresponding to the grabbing mechanism is provided between the two crawlers, and when the transfer mechanism reaches the waiting position of the grabbing mechanism, the lifting plate starts to lift up the transfer mechanism.

[0013] In one embodiment, the gripping mechanism comprises:

[0014] A grabbing assembly, used for grabbing the workpiece to be welded;

[0015] A displacement and rotation assembly is used to be arranged on the workbench and connected to the grabbing assembly. The displacement and rotation assembly is used to drive the grabbing assembly to move and rotate.

[0016] In one embodiment, the displacement rotation assembly comprises:

[0017] A displacement assembly, comprising a guide frame, a displacement platform and a displacement drive motor, wherein the displacement platform is movably arranged on the guide frame, and the displacement drive motor is used to drive the displacement platform to move on the guide frame;

[0018] The rotating assembly comprises a rotating arm and a rotating motor. The rotating arm is arranged on the displacement platform. The rotating end of the rotating arm is connected to the grabbing assembly. The rotating motor is used to drive the rotating arm to rotate so as to rotate the grabbing assembly.

[0019] In one embodiment, the gripping assembly comprises:

[0020] Two spaced-apart jaws;

[0021] A grabbing drive motor is arranged on the displacement platform and connected to the clamping claws. The grabbing drive motor is used to drive the two clamping claws to move closer to or away from each other so as to clamp or release the workpiece to be welded.

[0022] In one embodiment, the welding mechanism comprises:

[0023] A mechanical arm, which is arranged on the workbench;

[0024] A syringe solder paste, which is arranged on the mechanical arm and is used to apply solder paste to the corresponding position of the solder point;

[0025] The laser emitting structure is arranged on the mechanical arm and is used to emit laser to the position corresponding to the welding point for welding.

[0026] In one embodiment, a photographing mechanism is further included, and the photographing mechanism is arranged on the robotic arm and is used to determine the position of the welding point and detect the welding quality.

[0027] In one embodiment, it also includes a clamping seat, which is placed on the upper side of the transfer mechanism and has a placement slot for clamping the part to be welded.

[0028] In a second aspect, an embodiment of the present application further provides a welding production line, which includes the above-mentioned laser welding device.

[0029] The beneficial effects brought by the technical solution provided in the embodiments of the present application include:

[0030] When installing the laser welding device, two grabbing mechanisms are arranged at intervals on the workbench for clamping and rotating the workpiece to be welded outwardly, and two welding mechanisms are arranged correspondingly on the outside of the grabbing mechanisms for welding the workpiece to be welded, and the transfer mechanism is used to transport the workpiece to be welded from the to-be-grabbed position of one grabbing mechanism to the to-be-grabbed position of another grabbing mechanism. Since the two grabbing mechanisms are arranged at intervals on the workbench and the two welding mechanisms are arranged correspondingly on the outside of the grabbing mechanisms, the two workpieces to be welded can be grabbed and welded at the same time, and the rotation directions of the grabbing mechanisms are different, so there will be no mutual interference, which improves the efficiency of the welding process and solves the problem in the prior art that employees need to continuously pick up and discharge materials, flip the circuit board, and complete double-sided welding during the operation process, which is labor-intensive, increases labor costs, and reduces welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 It is a schematic structural diagram of a grabbing mechanism and a welding mechanism in an embodiment of a laser welding device of the present invention.

[0033] Figure 2 The figure is a schematic diagram of the tilted viewing angle structure of a gripping mechanism and a welding mechanism in an embodiment of a laser welding device of the present invention.

[0034] Figure 3 It is a schematic structural diagram of a clamping seat in an embodiment of a laser welding device of the present invention.

[0035] Figure 4 It is a structural schematic diagram of an embodiment of a laser welding device of the present invention.

[0036] Figure 5 It is a structural schematic diagram of a grabbing assembly in an embodiment of a laser welding device of the present invention.

[0037] In the figure: 1. workbench; 2. grabbing mechanism; 21. grabbing assembly; 211. claw; 22. displacement and rotation assembly; 221. displacement assembly; 2211. guide frame; 2212. displacement platform; 222. rotation assembly; 2221. rotating arm; 23. telescopic assembly; 231. fixed block; 232. moving block; 3. welding mechanism; 31. syringe solder paste; 32. laser emission structure; 33. robotic arm; 4. camera mechanism; 5. connector; 51. slot; 6. transfer mechanism; 7. parts to be welded. DETAILED DESCRIPTION

[0038] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0039] The embodiments of the present application provide a laser welding device and a welding production line, which can solve the problems in the prior art that during the operation process, employees need to continuously take and put materials, flip the circuit boards, and complete double-sided welding, which is labor-intensive, increases labor costs, and reduces welding efficiency.

[0040] like Figure 1 , Figure 2 and Figure 4 As shown, on the one hand, the present application provides a laser welding device, which includes:

[0041] Workbench 1;

[0042] Two gripping mechanisms 2 are arranged on the workbench 1 at intervals, and are used to clamp and rotate the workpiece 7 to be welded outwards;

[0043] Two welding mechanisms 3, which are respectively arranged on the outside of the grasping mechanism 2 and are used for welding the workpieces 7 to be welded;

[0044] The transfer mechanism 6 is used to transport the workpiece 7 to be welded from a position to be grasped by one grasping mechanism 2 to a position to be grasped by another grasping mechanism 2 .

[0045] When installing the laser welding device, two gripping mechanisms 2 are spaced apart on the workbench 1 for clamping and rotating the workpiece 7 to be welded outwardly, two welding mechanisms 3 are correspondingly disposed on the outside of the gripping mechanisms 2 for welding the workpiece 7 to be welded, and the transfer mechanism 6 is used to transport the workpiece 7 to be welded from the to-be-grabbed position of one gripping mechanism 2 to the to-be-grabbed position of another gripping mechanism 2. Since the two gripping mechanisms 2 are spaced apart on the workbench 1 and the two welding mechanisms 3 are correspondingly disposed on the outside of the gripping mechanisms 2, the two workpieces 7 to be welded can be gripped and welded at the same time, and the gripping mechanisms 2 rotate in different directions, so there will be no mutual interference, which improves the efficiency of the welding process and solves the problem in the prior art that during the operation, employees need to continuously pick up and discharge materials, flip the circuit board, and complete double-sided welding, which is labor-intensive, increases labor costs, and reduces welding efficiency.

[0046] In this case, it also includes a human-machine interface, and the parameters of each step can be set and password protection can be entered. It is equipped with necessary automatic operation control systems and safety devices, with fault reminder and recording functions. Fully consider the needs of maintenance, control the stop of partial functions such as full load and waiting for materials, or the automatic shutdown of the whole machine; reliable and durable materials are selected. In terms of equipment operation safety, a safety grating is added. When the window is opened and a person reaches into the equipment, an induction alarm is triggered and the machine is automatically shut down for protection.

[0047] In some optional embodiments, two tracks are disposed at intervals on the workbench 1, and the transfer mechanism 6 is used to be connected to the tracks to move the workpiece 7 to be welded.

[0048] In this embodiment, two spaced tracks are provided on the workbench 1, and the tracks are arranged in the same direction as the grabbing mechanism 2. The transfer mechanism 6 is used to connect with the tracks to move the parts to be welded 7, thereby facilitating the transfer of the parts to be welded 7.

[0049] In some optional embodiments, a lifting plate corresponding to the grabbing mechanism 2 is provided between the two tracks, and when the transfer mechanism 6 reaches the waiting position of the grabbing mechanism 2, the lifting plate starts to lift up the transfer mechanism 6.

[0050] In this embodiment, a lifting plate corresponding to the grabbing mechanism 2 is provided between the two tracks. When the transfer mechanism 6 reaches the position to be grabbed of the grabbing mechanism 2, the lifting plate starts to lift the transfer mechanism 6 to separate the transfer mechanism 6 from the tracks, so that the transfer mechanism 6 stops at the position to be grabbed of the grabbing mechanism 2 to facilitate grabbing.

[0051] like Figure 1 , Figure 2 and Figure 4 As shown, in some optional embodiments, the gripping mechanism 2 includes:

[0052] A grabbing assembly 21, which is used to grab the workpiece 7 to be welded;

[0053] The displacement and rotation assembly 22 is used to be arranged on the workbench 1 and connected to the grabbing assembly 21 . The displacement and rotation assembly 22 is used to drive the grabbing assembly 21 to move and rotate.

[0054] In this embodiment, the structure of the grabbing mechanism 2 is specifically described. The grabbing mechanism 2 includes a grabbing component 21 and a displacement rotation component 22, wherein the grabbing component 21 is used to grab the workpiece 7 to be welded, and the displacement rotation component 22 is used to be set on the workbench 1 and connected to the grabbing component 21. The displacement rotation component 22 is used to drive the grabbing component 21 to move and rotate. The structure is simple and easy to manufacture.

[0055] like Figure 1 and Figure 2 As shown, in some optional embodiments, the displacement rotation assembly 22 includes:

[0056] The displacement assembly 221 includes a guide frame 2211, a displacement platform 2212 and a displacement drive motor. The displacement platform 2212 is movably disposed on the guide frame 2211. The displacement drive motor is used to drive the displacement platform 2212 to move on the guide frame 2211.

[0057] The rotating assembly 222 includes a rotating arm 2221 and a rotating motor. The rotating arm 2221 is disposed on the displacement platform 2212 . The rotating end of the rotating arm 2221 is connected to the grabbing assembly 21 . The rotating motor is used to drive the rotating arm 2221 to rotate so as to rotate the grabbing assembly 21 .

[0058] In this embodiment, the specific structure of the displacement rotation component 22 is described. The displacement rotation component 22 includes a displacement component 221 and a rotation component 222, wherein the displacement component 221 includes a guide frame 2211, a displacement platform 2212 and a displacement drive motor, the displacement platform 2212 is movably arranged on the guide frame 2211, the displacement drive motor is used to drive the displacement platform 2212 to move on the guide frame 2211, and the rotation component 222 includes a rotating arm 2221 and a rotating motor, the rotating arm 2221 is arranged on the displacement platform 2212, the rotating end of the rotating arm 2221 is connected to the grabbing component 21, and the rotating motor is used to drive the rotating arm 2221 to rotate to rotate the grabbing component 21. The structure is simple, easy to manufacture, and convenient for welding operations.

[0059] like Figure 5 As shown, in some optional embodiments, the grabbing component 21 includes:

[0060] Two claws 211 arranged at intervals;

[0061] The grabbing drive motor is arranged on the displacement platform 2212 and connected to the clamping claws 211. The grabbing drive motor is used to drive the two clamping claws 211 to move closer to or away from each other so as to clamp or release the workpiece 7 to be welded.

[0062] In this embodiment, the specific structure of the grasping component 21 is described. The grasping component 21 includes a grasping drive motor and two claws 211, wherein the two claws 211 are arranged at intervals, and the grasping drive motor is arranged on the displacement platform 2212 and connected to the claws 211. The grasping drive motor is used to drive the two claws 211 to move closer to or away from each other to clamp or release the workpiece 7 to be welded, which is convenient for grasping and has a simple structure.

[0063] like Figure 1 , Figure 2 and Figure 4 As shown, in some optional embodiments, the welding mechanism 3 includes:

[0064] A mechanical arm 33, which is arranged on the workbench 1;

[0065] A syringe solder paste 31, which is arranged on a mechanical arm 33 and is used to apply solder paste to positions corresponding to solder points;

[0066] The laser emitting structure 32 is arranged on the robot arm 33 and is used to emit laser to the position corresponding to the welding point for welding.

[0067] In this embodiment, the structure of the welding mechanism 3 is specifically described. The welding mechanism 3 includes a robotic arm 33, a syringe of solder paste 31 and a laser emitting structure 32, wherein the robotic arm 33 is arranged on the workbench 1, the syringe of solder paste 31 is arranged on the robotic arm 33, and is used to apply solder paste to the corresponding position of the solder point, and the laser emitting structure 32 is arranged on the robotic arm 33, and is used to emit laser to the corresponding position of the solder point for welding. The use of the robotic arm 33 structure can increase the flexibility of the welding mechanism 3 and improve the welding effect.

[0068] In this example, a telescopic component 23 is also included, which includes a fixed block 231, a moving block 232 and a driving unit. The fixed block 231 is set on the robot arm 33, and the moving block 232 is slidably set on the fixed block 231. The syringe solder paste 31 and the laser emission structure 32 are both set on the moving block 232, which improves applicability and facilitates position adjustment.

[0069] like Figure 4 As shown, in some optional embodiments, a photographing mechanism 4 is also included. The photographing mechanism 4 is arranged on the robot arm 33 and is used to determine the position of the welding point and detect the welding quality.

[0070] In this embodiment, the laser welding device also includes a camera mechanism 4, which is arranged on the robotic arm 33 and is used to determine the position of the welding point and detect the welding quality, improve the welding accuracy, automatically detect the welding quality, judge whether the product is qualified or defective, and reduce the errors that may occur in manual judgment.

[0071] like Figure 3 As shown, in some optional embodiments, a clamping seat 5 is further included. The clamping seat 5 is placed on the upper side of the transfer mechanism 6, and a placement slot 51 for clamping the part 7 to be welded is provided on the clamping seat 5.

[0072] In this embodiment, the laser welding device also includes a clamping seat 5, which is placed on the upper side of the transfer mechanism 6. The clamping seat 5 is provided with a placement slot 51 for clamping the part to be welded 7, which is convenient for fixing the part to be welded 7 and preventing the part to be welded 7 from separating, and also convenient for the grasping mechanism 2 to grasp.

[0073] like Figure 1 , Figure 2 and Figure 4 As shown, on the other hand, the present application also provides a welding production line, which includes the above-mentioned laser welding device.

[0074] When installing the laser welding device, two gripping mechanisms 2 are spaced apart on the workbench 1 for clamping and rotating the workpiece 7 to be welded outwardly, two welding mechanisms 3 are correspondingly disposed on the outside of the gripping mechanisms 2 for welding the workpiece 7 to be welded, and the transfer mechanism 6 is used to transport the workpiece 7 to be welded from the to-be-grabbed position of one gripping mechanism 2 to the to-be-grabbed position of another gripping mechanism 2. Since the two gripping mechanisms 2 are spaced apart on the workbench 1 and the two welding mechanisms 3 are correspondingly disposed on the outside of the gripping mechanisms 2, the two workpieces 7 to be welded can be gripped and welded at the same time, and the gripping mechanisms 2 rotate in different directions, so there will be no mutual interference, which improves the efficiency of the welding process and solves the problem in the prior art that during the operation, employees need to continuously pick up and discharge materials, flip the circuit board, and complete double-sided welding, which is labor-intensive, increases labor costs, and reduces welding efficiency.

[0075] In this embodiment, two spaced tracks are provided on the workbench 1, and the tracks are arranged in the same direction as the grabbing mechanism 2. The transfer mechanism 6 is used to connect with the tracks to move the parts to be welded 7, thereby facilitating the transfer of the parts to be welded 7.

[0076] In this embodiment, a lifting plate corresponding to the grabbing mechanism 2 is provided between the two tracks. When the transfer mechanism 6 reaches the position to be grabbed of the grabbing mechanism 2, the lifting plate starts to lift the transfer mechanism 6 to separate the transfer mechanism 6 from the tracks, so that the transfer mechanism 6 stops at the position to be grabbed of the grabbing mechanism 2 to facilitate grabbing.

[0077] In this embodiment, the structure of the grabbing mechanism 2 is specifically described. The grabbing mechanism 2 includes a grabbing component 21 and a displacement rotation component 22, wherein the grabbing component 21 is used to grab the workpiece 7 to be welded, and the displacement rotation component 22 is used to be set on the workbench 1 and connected to the grabbing component 21. The displacement rotation component 22 is used to drive the grabbing component 21 to move and rotate. The structure is simple and easy to manufacture.

[0078] In this embodiment, the specific structure of the displacement rotation component 22 is described. The displacement rotation component 22 includes a displacement component 221 and a rotation component 222, wherein the displacement component 221 includes a guide frame 2211, a displacement platform 2212 and a displacement drive motor, the displacement platform 2212 is movably arranged on the guide frame 2211, the displacement drive motor is used to drive the displacement platform 2212 to move on the guide frame 2211, and the rotation component 222 includes a rotating arm 2221 and a rotating motor, the rotating arm 2221 is arranged on the displacement platform 2212, the rotating end of the rotating arm 2221 is connected to the grabbing component 21, and the rotating motor is used to drive the rotating arm 2221 to rotate to rotate the grabbing component 21. The structure is simple, easy to manufacture, and convenient for welding operations.

[0079] In this embodiment, the specific structure of the grasping component 21 is described. The grasping component 21 includes a grasping drive motor and two claws 211, wherein the two claws 211 are arranged at intervals, and the grasping drive motor is arranged on the displacement platform 2212 and connected to the claws 211. The grasping drive motor is used to drive the two claws 211 to move closer to or away from each other to clamp or release the workpiece 7 to be welded, which is convenient for grasping and has a simple structure.

[0080] In this embodiment, the structure of the welding mechanism 3 is specifically described. The welding mechanism 3 includes a robotic arm 33, a syringe of solder paste 31 and a laser emitting structure 32, wherein the robotic arm 33 is arranged on the workbench 1, the syringe of solder paste 31 is arranged on the robotic arm 33, and is used to apply solder paste to the corresponding position of the solder point, and the laser emitting structure 32 is arranged on the robotic arm 33, and is used to emit laser to the corresponding position of the solder point for welding. The use of the robotic arm 33 structure can increase the flexibility of the welding mechanism 3 and improve the welding effect.

[0081] In this embodiment, the laser welding device also includes a camera mechanism 4, which is arranged on the robotic arm 33 and is used to determine the position of the welding point and detect the welding quality, improve the welding accuracy, automatically detect the welding quality, judge whether the product is qualified or defective, and reduce the errors that may occur in manual judgment.

[0082] In this embodiment, the laser welding device also includes a clamping seat 5, which is placed on the upper side of the transfer mechanism 6. The clamping seat 5 is provided with a placement slot 51 for clamping the part to be welded 7, which is convenient for fixing the part to be welded 7 and preventing the part to be welded 7 from separating, and also convenient for the grasping mechanism 2 to grasp.

[0083] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application 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 cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0084] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0085] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A laser welding device, characterized in that: include: Workbench (1); Two grasping mechanisms (2) are arranged at intervals on the workbench (1) and are used to clamp and rotate the workpiece (7) to be welded outward; Two welding mechanisms (3), the two welding mechanisms (3) being respectively arranged on the outside of the grasping mechanism (2) and used for welding the workpiece (7) to be welded; A transfer mechanism (6) is used to transport the workpiece (7) to be welded from a position to be grasped by one grasping mechanism (2) to a position to be grasped by another grasping mechanism (2).

2. A laser welding device as claimed in claim 1, characterized in that: The workbench (1) is provided with two crawlers arranged at intervals, and the transfer mechanism (6) is used to be connected to the crawlers to move the workpiece (7) to be welded.

3. A laser welding device as claimed in claim 2, characterized in that: A lifting plate corresponding to the grabbing mechanism (2) is provided between the two crawlers, and when the transfer mechanism (6) reaches the waiting position of the grabbing mechanism (2), the lifting plate starts to lift up the transfer mechanism (6).

4. A laser welding device as claimed in claim 1, characterized in that: The gripping mechanism (2) comprises: A grabbing assembly (21) for grabbing the workpiece to be welded (7); A displacement rotation component (22) is used to be arranged on the workbench (1) and connected to the grabbing component (21); the displacement rotation component (22) is used to drive the grabbing component (21) to move and rotate.

5. A laser welding device as claimed in claim 4, characterized in that: The displacement rotation assembly (22) comprises: A displacement assembly (221), comprising a guide frame (2211), a displacement platform (2212) and a displacement drive motor, wherein the displacement platform (2212) is movably arranged on the guide frame (2211), and the displacement drive motor is used to drive the displacement platform (2212) to move on the guide frame (2211); A rotating assembly (222) comprises a rotating arm (2221) and a rotating motor. The rotating arm (2221) is arranged on the displacement platform (2212). The rotating end of the rotating arm (2221) is connected to the grabbing assembly (21). The rotating motor is used to drive the rotating arm (2221) to rotate so as to rotate the grabbing assembly (21).

6. A laser welding device as claimed in claim 5, characterized in that: The grabbing assembly (21) comprises: Two claws (211) arranged at intervals; A grabbing drive motor is arranged on the displacement platform (2212) and connected to the clamping claws (211), and the grabbing drive motor is used to drive the two clamping claws (211) to move closer to or farther away from each other, so as to clamp or release the workpiece (7) to be welded.

7. A laser welding device as claimed in claim 1, characterized in that: The welding mechanism (3) comprises: A mechanical arm (33) disposed on the workbench (1); A syringe solder paste (31), which is arranged on the mechanical arm (33) and is used to apply solder paste to positions corresponding to solder points; A laser emitting structure (32) is arranged on the mechanical arm (33) and is used to emit laser light to a position corresponding to a welding point to perform welding.

8. A laser welding device as claimed in claim 7, characterized in that: It also includes a photographing mechanism (4), which is arranged on the mechanical arm (33) and is used to determine the position of the welding point and detect the welding quality.

9. A laser welding device as claimed in claim 1, characterized in that: It also comprises a clamping seat (5), the clamping seat (5) is placed on the upper side of the transfer mechanism (6), and the clamping seat (5) is provided with a placement slot (51) for clamping the part to be welded (7).

10. A welding production line, characterized in that: It comprises a laser welding device as described in any one of claims 1-9.

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