Laser welding device

Abstract

The embodiment of the invention discloses a laser welding device which comprises a controller, a movable welding structure, a connecting structure and a material supply structure, and the controller is electrically connected with the welding structure and the material supply structure and used for controlling the moving path, the moving speed and the laser output power of the welding structure. Laser emitted by the welding structure is focused on the welding position of a to-be-welded workpiece, the to-be-welded workpiece comprises a micropore metal material, the material supply structure comprises a feeding assembly, and the material supply structure is fixedly connected with the welding structure through a connecting structure; a material output port of the feeding assembly is arranged close to the welding position, and the feeding structure is used for conveying filling materials to the welding position. By the adoption of the method, the problem that weld burnthrough, collapse or cracks are prone to occurring in the welding process of the micropore metal material can be solved, and therefore the connection strength and the welding effect of the welding position are improved.

Description

Technical Field

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

[0002] Microporous metal materials refer to materials with tiny pores, which are usually at the micron or nanometer level. With the continuous advancement of science and technology and the expansion of application fields, the market size of microporous metal materials continues to expand. Since microporous metal materials can be used as filter elements or other functional parts in some filtering devices, in order to ensure the application of microporous metal materials in different scenarios, the demand for welding microporous metal materials is also increasing.

[0003] However, when microporous metal materials are welded to themselves or to other metal parts, due to the porous structural characteristics of such materials, weld burn-through, collapse or crack defects are prone to occur during autogenous welding, thereby affecting the connection strength of the weld.

[0004] Therefore, how to improve the connection strength of the welds of microporous metal materials to improve the welding effect has become a technical problem that needs to be solved urgently. Summary of the invention

[0005] The embodiment of the present application provides a laser welding device to solve the technical problems of low connection strength and poor welding effect at the welding point when performing fusion welding connection on microporous metal materials.

[0006] In one aspect, in order to solve the above technical problems, an embodiment of the present application provides a laser welding device, including: a controller, a movable welding structure, a connecting structure, and a material supply structure;

[0007] The controller is electrically connected to the welding structure and the material supply structure, respectively, and is used to control the moving path, moving speed, laser output power of the welding structure, and the operation switch and feeding amount of the material supply structure;

[0008] The laser output port of the welding structure is aligned with the workpiece to be welded, and the laser emitted by the welding structure is focused on the welding position of the workpiece to be welded, and the workpiece to be welded includes a microporous metal material;

[0009] The material supply structure includes a feeding assembly, which is fixedly connected to the welding structure via the connecting structure. The material output port of the feeding assembly is arranged near the welding point. The feeding structure is used to transport the filling material required for welding the workpiece to be welded to the welding point during the welding process of the workpiece to be welded.

[0010] In an embodiment of the present invention, the welding structure includes a laser, a welding head and a driving structure;

[0011] The laser is electrically connected to the controller, and the laser is used to emit corresponding laser light according to the output power control instruction sent by the controller;

[0012] The welding head is connected to the output port of the laser, and the welding head is used to focus the laser light emitted by the laser to the welding position;

[0013] One end of the driving structure is electrically connected to the controller, and the other end is connected to the welding head. The driving structure is used to drive the welding head to perform corresponding movement operations according to the movement control instructions sent by the controller.

[0014] In an embodiment of the present invention, the material supply structure further comprises an auxiliary adjustment component and a screw rod, and the screw rod and the laser head maintain a relatively parallel relationship;

[0015] The auxiliary adjustment component is sleeved around the outside of the screw rod, and the side surface of the auxiliary adjustment component is fixedly connected to the welding head through the connecting structure. The end of the screw rod close to the plane where the workpiece to be welded is located is connected to the feeding component, and the auxiliary adjustment component is used to adjust the positional relationship between the feeding component and the welding point.

[0016] In an embodiment of the present invention, the auxiliary adjustment component includes a sleeve and a height adjustment component, the sleeve is sleeved around the outside of the screw rod, the side of the sleeve is connected to the welding head through the connecting structure, and the height adjustment component is arranged at the end of the sleeve, and the height adjustment component is used to adjust the height of the screw rod relative to the plane where the workpiece to be welded is located, so as to adjust the height of the feeding assembly relative to the plane where the workpiece to be welded is located.

[0017] In an embodiment of the present invention, the height adjustment assembly includes a flat nut, which matches the thread of the lead screw and is respectively arranged at the upper and lower ends of the sleeve. The flat nut is used to adjust the position of the flat nut on the lead screw so that the lead screw can move up and down in the sleeve, and after the lead screw reaches a predetermined height, the flat nuts located at the upper and lower ends of the sleeve are adjusted to be tightly attached to the end face of the sleeve to fix the lead screw.

[0018] In an embodiment of the present invention, the auxiliary adjustment component includes a horizontal rotation adjustment component, which is arranged at the end of the welding head close to the plane where the workpiece to be welded is located and connected to the welding head. The side of the horizontal rotation adjustment component is fixedly connected to the side of the sleeve through the connecting structure. The horizontal rotation adjustment component is used to rotate around the common axis of the welding head and the horizontal rotation adjustment component at the end of the welding head to adjust the horizontal rotation angle of the material supply structure.

[0019] In an embodiment of the present invention, the auxiliary adjustment component includes a vertical rotation adjustment component, which is arranged at the end of the screw rod close to the plane where the workpiece to be welded is located, and the screw rod is connected to the feeding assembly through the vertical rotation adjustment component. The vertical rotation adjustment component is used to rotate around the connection point between the vertical rotation adjustment component and the screw rod to adjust the vertical rotation angle of the feeding assembly.

[0020] In an embodiment of the present invention, the feeding assembly includes a conveying pipe, the vertical rotation adjustment assembly is fixedly connected to the conveying pipe, and the output port of the conveying pipe is close to the welding point.

[0021] In an embodiment of the present invention, the feeding assembly also includes a feeder, which is connected to the input port of the conveying pipe. The feeder is used to convey the filling material required for welding the workpieces to be welded into the conveying pipe, and the filling material includes welding powder and welding wire with the same metal properties as the workpieces to be welded.

[0022] In an embodiment of the present invention, the laser welding device further includes a water cooling system and a protective gas delivery system;

[0023] The water cooling system is connected to the welding structure and is used to cool the welding structure;

[0024] The protective gas delivery system is connected to the welding structure and the workpiece to be welded respectively, and is used to provide protective gas to the area where the welding is located to isolate the influence of air on the welding process.

[0025] An embodiment of the present application provides a laser welding device, which can effectively avoid the problem of weld burn-through, collapse or cracks in microporous metal materials during welding by fixedly connecting a material supply structure with a movable welding structure, and when the welding structure is welding the workpiece to be welded, the filling material required for welding the workpiece to be welded is transported to the welding point through the material supply structure. This can effectively avoid the problem of weld burn-through, collapse or cracks in microporous metal materials during welding, thereby improving the connection strength of the welding point and the welding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] 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 those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 It is a schematic diagram of weld formation defects of microporous metal materials in self-melting welding in the related art;

[0028] Figure 2 is a structural schematic diagram of a laser welding device provided by an embodiment of the present invention;

[0029] Figure 3 is another structural schematic diagram of the laser welding device provided in an embodiment of the present invention;

[0030] Figure 4 Schematic diagram of a weld obtained by welding with welding powder using a laser welding device provided in an embodiment of the present invention;

[0031] Figure 5 Schematic diagram of a weld obtained by welding using a welding wire using a laser welding device provided in an embodiment of the present invention;

[0032] The marks in the accompanying drawings are as follows:

[0033] 100, laser welding device; 110, controller; 120, welding structure; 130, connecting structure; 140, material supply structure;

[0034] 121. Welding head;

[0035] 141. Feeding assembly; 142. Auxiliary adjustment assembly; 143. Screw rod;

[0036] 1411, delivery pipe;

[0037] 1421. height adjustment component; 1422. horizontal rotation adjustment component; 1423. vertical rotation adjustment component; 1424. sleeve;

[0038] 200. Workpiece to be welded. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions 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 those skilled in the art without creative work are within the scope of protection of this application.

[0040] In the description of the present application, it should be understood that the terms "longitudinal", "lateral", "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply 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. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. In the present application, " / " means "or".

[0041] The present application may repeat reference numerals and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0042] In the embodiments of the present invention, microporous metal materials refer to materials with tiny pores, and the size of these pores is usually in the micrometer or nanometer level. With the continuous advancement of science and technology and the expansion of application fields, the market size of microporous metal materials continues to expand. Since microporous metal materials can be used as filter elements or other functional parts in some filtering devices, in order to ensure the application of microporous metal materials in different scenarios, the demand for welding microporous metal materials is also increasing.

[0043] However, when microporous metal materials are welded to themselves or to other metal parts, due to the porous structural characteristics of such materials, weld burn-through, collapse or crack defects are likely to occur during autogenous welding, thereby affecting the connection strength of the weld. Figure 1 As shown, Figure 1 It is a schematic diagram of weld formation defects in self-melting welding of microporous metal materials in the related art.

[0044] Therefore, how to improve the connection strength of the welds of microporous metal materials to improve the welding effect has become a technical problem that needs to be solved urgently.

[0045] In order to solve the above technical problems, the present application embodiment provides a laser welding device 100. For details, see Figure 2 , Figure 2 is a schematic diagram of a structure of a laser welding device provided by an embodiment of the present invention, such as Figure 2As shown, a laser welding device 100 provided in an embodiment of the present application includes: a controller 110, a movable welding structure 120, a connecting structure 130 and a material supply structure 140;

[0046] Among them, the controller 110 is electrically connected to the welding structure 120 and the material supply structure 140 respectively, and is used to control the moving path, moving speed, laser output power of the welding structure 120, as well as the operation switch and feeding amount of the material supply structure 140; the laser output port of the welding structure 120 is aligned with the workpiece 200 to be welded, and the laser emitted by the welding structure 120 is focused on the welding point of the workpiece 200 to be welded, and the workpiece 200 to be welded includes a microporous metal material; the material supply structure 140 includes a feeding assembly 141, and the material supply structure 140 is fixedly connected to the welding structure 120 through the connecting structure 130, and the material output port of the feeding assembly 141 is arranged near the welding point, and the feeding structure is used to transport the filling material required for welding the workpiece 200 to be welded to the welding point during the welding process of the workpiece 200 to be welded.

[0047] In this embodiment, the connecting structure 130 provided in this embodiment can be a retractable connecting rod structure. By adjusting the telescopic length of the connecting structure 130 and fixing the length of the connecting structure 130 after the material supply structure 140 reaches a predetermined position, the front and rear position relationship between the landing point of the filling material delivered by the material supply structure 140 and the landing point of the laser spot emitted by the welding structure 120 can be adjusted, thereby effectively adapting to different workpiece structures and process requirements of the workpieces 200 to be welded.

[0048] As an alternative embodiment, see Figure 3 , Figure 3 is another structural schematic diagram of the laser welding device provided in an embodiment of the present invention, such as Figure 3 As shown, the laser welding device 100 provided in this embodiment may also include a processing platform and a fixing device, wherein the fixing device is arranged on the processing platform, and the processing platform can be used to place the workpiece 200 to be welded, and the fixing device can be used to fix the workpiece 200 to be welded on the processing platform, and pre-fix the weld assembly gap, misalignment and weld position, so as to effectively suppress the change of the gap and misalignment caused by thermal stress deformation during welding, so as to ensure the stability of welding quality.

[0049] In this embodiment, the controller 110 provided in this embodiment may be a PLC controller, which sends a laser control instruction to the welding structure 120 (the laser control instruction may include laser welding process parameters such as a moving path control instruction, a moving speed control instruction, and a laser output power control instruction) to select different laser welding process parameters, control the welding structure 120 to move at a specified moving speed and along a specified moving path, and emit a laser with a specified output power to weld different workpieces 200 to be welded. Specifically, the welding structure 120 provided in this embodiment may include a 1080nm fiber laser, and the core diameter of the transmission fiber used is 50μm-600μm, or the welding structure 120 may also include a 915nm semiconductor laser, and the core diameter of the transmission fiber used is 400μm-600μm.

[0050] At the same time, the controller 110 provided in this embodiment can also send operation switch instructions and supply quantity control instructions to the material supply structure 140 to control the switch state of the material supply structure 140 and the supply quantity of the filling material in the operation state.

[0051] At the same time, since the material supply structure 140 provided in this embodiment is fixedly connected to the welding structure 120, when the controller 110 controls the welding structure 120 to move, the material supply structure 140 will also move with the welding structure 120, so that the material output port of the feeding component 141 in the material supply structure 140 can always maintain a position close to the welding point, achieving the purpose of continuous feeding, thereby effectively ensuring the welding effect of the entire weld.

[0052] In this way, by fixedly connecting the material supply structure 140 with the movable welding structure 120, and when the welding structure 120 is welding the workpiece 200 to be welded, the filling material required for welding the workpiece 200 to be welded is transported to the welding point through the material supply structure 140, the problem of weld burn-through, collapse or cracking of microporous metal materials during welding can be effectively avoided, thereby improving the connection strength of the welding point and the welding effect.

[0053] In some embodiments, see also Figure 2 and Figure 3The welding structure 120 provided in this embodiment may include a laser (not shown in the figure), a welding head 121 and a driving structure (not shown in the figure); the laser is electrically connected to the controller 110, and the laser is used to emit a corresponding laser according to an output power control instruction sent by the controller 110; the welding head 121 is connected to the output port of the laser, and the welding head 121 is used to focus the laser emitted by the laser to the welding point; one end of the driving structure is electrically connected to the controller 110, and the other end is connected to the welding head 121, and the driving structure is used to drive the welding head 121 to perform a corresponding movement operation according to a movement control instruction sent by the controller 110.

[0054] The welding head 121 provided in this embodiment is mainly used for collimating and focusing the laser emitted by the laser. Specifically, the collimation range of the welding head 121 may be 80mm-120mm, and the focusing range may be 200mm-300mm.

[0055] In this embodiment, the controller 110 provided in this embodiment can generate corresponding movement control instructions (including movement path control instructions and movement speed control instructions corresponding to different material types of different workpieces to be welded) according to the position of the weld on the processing platform and the length of the weld to be welded, and send the movement control instructions to the driving structure so that the driving structure drives the laser to perform corresponding movement operations, thereby completing the welding operation of the weld.

[0056] In other embodiments, in order to improve the welding accuracy and welding efficiency of the laser welding device 100 provided in this embodiment, please continue to refer to Figure 2 The material supply structure 140 provided in this embodiment may also include an auxiliary adjustment component 142 and a screw rod 143, and the screw rod 143 maintains a relatively parallel relationship with the welding head 121; the auxiliary adjustment component 142 is sleeved on the outside of the screw rod 143, and the side of the auxiliary adjustment component 142 is fixedly connected to the welding head 121 through the connecting structure 130, and the end of the screw rod 143 close to the plane where the workpiece 200 to be welded is located is connected to the feeding component 141, and the auxiliary adjustment component 142 is used to adjust the positional relationship between the feeding component 141 and the welding point.

[0057] In this way, the auxiliary adjustment component 142 and the screw rod 143 provided in this embodiment can adjust the positional relationship between the feeding component 141 and the welding point, so as to adapt to different workpiece structures and process requirements of the workpiece 200 to be welded.

[0058] In one embodiment of the present invention, the auxiliary adjustment component 142 provided in this embodiment may include a sleeve 1424 and a height adjustment component 1421, the sleeve 1424 is sleeved around the outside of the screw rod 143, the side of the sleeve 1424 is connected to the welding head 121 through the connecting structure 130, and the height adjustment component 1421 is arranged at the end of the sleeve 1424, and the height adjustment component 1421 is used to adjust the height of the screw rod 143 relative to the plane where the workpiece 200 to be welded is located, so as to adjust the height of the feeding component 141 relative to the plane where the workpiece 200 to be welded is located.

[0059] Specifically, the height adjustment component 1421 provided in this embodiment can be a flat nut, which matches the thread of the screw rod 143 and is respectively arranged at the upper and lower ends of the sleeve 1424. The flat nut is used to adjust the position of the flat nut on the screw rod 143 so that the screw rod 143 can move up and down in the sleeve 1424, and after the screw rod 143 reaches a predetermined height, the flat nuts located at the upper and lower ends of the sleeve 1424 are adjusted to be close to the end face of the sleeve 1424 to fix the screw rod.

[0060] In this way, through the height adjustment component 1421 provided in this embodiment, the feeding component 141 can be adjusted up and down in the height direction to adapt to different welding working distances.

[0061] In another embodiment of the present invention, the auxiliary adjustment component 142 provided in this embodiment may also include a horizontal rotation adjustment component 1422, which is arranged at the end of the welding head 121 close to the plane where the workpiece 200 to be welded is located, and is connected to the welding head 121, and the side of the horizontal rotation adjustment component 1422 is fixedly connected to the side of the sleeve 1424 through the connecting structure 130, and the horizontal rotation adjustment component 1422 is used to rotate around the common axis of the welding head 121 and the horizontal rotation adjustment component 1422 at the end of the welding head 121 to adjust the horizontal rotation angle of the entire material supply structure 140.

[0062] Similarly, the horizontal rotation adjustment component 1422 provided in this embodiment may also be provided with a flat nut, which may be respectively arranged at the upper and lower ends of the horizontal rotation adjustment component 1422, and the working principle of the flat nut is the same as that of the flat nut in the height adjustment component 1421, and both may be used to fix the horizontal rotation adjustment component 1422 by tightening, and to move the horizontal rotation adjustment component 1422 by loosening (rotating around the common axis of the welding head 121 and the horizontal rotation adjustment component 1422 at the end of the welding head 121). In this way, through the horizontal rotation adjustment component 1422 provided in this embodiment, the horizontal rotation angle of the feeding component 141 relative to the weld can be achieved to adapt to different workpiece structures and process requirements of the workpieces 200 to be welded.

[0063] In another embodiment of the present invention, Figure 2 As shown, the auxiliary adjustment component 142 provided in this embodiment may also include a vertical rotation adjustment component 1423, and the vertical rotation adjustment component 1423 is arranged at the end of the screw rod 143 close to the plane where the workpiece 200 to be welded is located, and the screw rod 143 is connected to the feeding component 141 through the vertical rotation adjustment component 1423, and the vertical rotation adjustment component 1423 is used to rotate around the connection point between the vertical rotation adjustment component 1423 and the screw rod 143 to adjust the vertical rotation angle of the feeding component 141.

[0064] Specifically, one end of the vertical rotation adjustment component 1423 provided in this embodiment can be rotatably connected to the screw rod 143 by means of a pin passing through a connection hole (not shown in the figure) on the screw rod 143, and after rotating to a specified angle, the pin can be tightened by a nut to achieve the fixation of the vertical rotation adjustment component 1423; the other end of the vertical rotation adjustment component 1423 is fixedly connected to the feeding component 141, so that the vertical rotation adjustment component 1423 can be rotated around the connection point (i.e., the connection hole) between the vertical rotation adjustment component 1423 and the screw rod 143 to adjust the vertical rotation angle of the feeding component 141. In this way, through the vertical rotation adjustment component 1423 provided in this embodiment, the angle adjustment of the axis of the feeding component 141 relative to the surface of the workpiece 200 to be welded can be achieved to adapt to different workpiece structures and process requirements.

[0065] As an optional embodiment, in order to improve the feeding efficiency of the feeding assembly 141, the feeding assembly 141 provided in this embodiment may include a delivery pipe 1411, the vertical rotation adjustment assembly 1423 is fixedly connected to the delivery pipe 1411, and the output port of the delivery pipe 1411 is close to the welding point. In addition, the feeding assembly 141 provided in this embodiment may also include a feeder (not shown in the figure), the feeder is connected to the input port of the delivery pipe 1411, and the feeder is used to deliver the filler material required for welding the workpiece 200 to be welded into the delivery pipe 1411, and the filler material includes welding powder and welding wire with the same metal properties as the workpiece 200 to be welded.

[0066] The length of the delivery tube 1411 provided in this embodiment can be customized as long as it can complete the delivery of the filling material, and is not specifically limited here.

[0067] Specifically, the welding powder and welding wire provided in this embodiment with the same metal properties as the workpiece 200 to be welded can be used in combination with different welding process parameters to achieve high-quality welding processing. Preferably, in this embodiment, when welding powder is used as a filler material to weld the workpiece 200 to be welded, the laser can use a 400μm-600μm semiconductor laser or fiber laser, the laser power can be 1000W-4000W, the welding speed is 5mm / s-20mm / s, and the powder particle size of the welding powder is 100 mesh-300 mesh, and finally a high-quality welding process is completed, as shown in Figure 4. Figure 4 5 is a schematic diagram of a weld obtained by welding the workpiece 200 to be welded using welding powder by the laser welding device provided in an embodiment of the present invention; when welding the workpiece 200 to be welded using welding wire as a filler material, the laser can be a 50μm-600μm fiber laser, the laser power can be 1000W-4000W, the welding speed is 15mm / s-30mm / s, the diameter of the welding wire is 0.8mm-1.6mm, and finally a high-quality welding process is completed, as shown in FIG. 5. Figure 5 It is a schematic diagram of a weld seam obtained by welding using a welding wire using a laser welding device provided in an embodiment of the present invention.

[0068] In an embodiment of the present invention, the laser welding device 100 provided in this embodiment may also include a water cooling system and a protective gas delivery system; the water cooling system is connected to the welding structure 120 for cooling the welding structure 120; the protective gas delivery system is respectively connected to the welding structure 120 and the workpiece 200 to be welded, for providing protective gas to the area where the welding is located to isolate the influence of air on the welding process.

[0069] In summary, an embodiment of the present invention provides a laser welding device, comprising a controller, a movable welding structure, a connecting structure and a material supply structure; the controller is electrically connected to the welding structure and the material supply structure, respectively, and is used to control the moving path, moving speed, laser output power of the welding structure, and the operation switch and feeding amount of the material supply structure; the laser output port of the welding structure is aligned with the workpiece to be welded, and the laser emitted by the welding structure is focused on the welding point of the workpiece to be welded, and the workpiece to be welded includes a microporous metal material; the material supply structure includes a feeding assembly, the material supply structure is fixedly connected to the welding structure through the connecting structure, the material output port of the feeding assembly is arranged near the welding point, and the feeding structure is used to transport the filling material required for welding the workpiece to be welded to the welding point during the welding process of the workpiece to be welded.

[0070] The laser welding device provided by the embodiment of the present invention can have the following beneficial effects:

[0071] By fixedly connecting the material supply structure with the movable welding structure, and when the welding structure is welding the workpiece to be welded, the filling material required for welding the workpiece to be welded is transported to the welding point through the material supply structure, the problem of weld burn-through, collapse or cracking of microporous metal materials during welding can be effectively avoided, thereby improving the connection strength of the welding point and the welding effect.

[0072] Some embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referenced to each other.

[0073] The above is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but should conform to the widest scope consistent with the principles and novel features applied herein.

Claims

1. A laser welding device, characterized in that: include: A controller, a movable welding structure, a connecting structure, and a material supply structure; The controller is electrically connected to the welding structure and the material supply structure, respectively, and is used to control the moving path, moving speed, laser output power of the welding structure, and the operation switch and feeding amount of the material supply structure; The laser output port of the welding structure is aligned with the workpiece to be welded, and the laser emitted by the welding structure is focused on the welding position of the workpiece to be welded, and the workpiece to be welded includes a microporous metal material; The material supply structure includes a feeding assembly, which is fixedly connected to the welding structure via the connecting structure. The material output port of the feeding assembly is arranged near the welding point. The feeding structure is used to transport the filling material required for welding the workpiece to be welded to the welding point during the welding process of the workpiece to be welded.

2. The laser welding device according to claim 1, characterized in that: The welding structure includes a laser, a welding head and a driving structure; The laser is electrically connected to the controller, and the laser is used to emit corresponding laser light according to the output power control instruction sent by the controller; The welding head is connected to the output port of the laser, and the welding head is used to focus the laser light emitted by the laser to the welding position; One end of the driving structure is electrically connected to the controller, and the other end is connected to the welding head. The driving structure is used to drive the welding head to perform corresponding movement operations according to the movement control instructions sent by the controller.

3. The laser welding device according to claim 2, characterized in that: The material supply structure also includes an auxiliary adjustment assembly and a screw rod, wherein the screw rod and the welding head maintain a relatively parallel relationship; The auxiliary adjustment component is sleeved around the outside of the screw rod, and the side surface of the auxiliary adjustment component is fixedly connected to the welding head through the connecting structure. The end of the screw rod close to the plane where the workpiece to be welded is located is connected to the feeding component, and the auxiliary adjustment component is used to adjust the positional relationship between the feeding component and the welding point.

4. The laser welding device according to claim 3, characterized in that: The auxiliary adjustment component includes a sleeve and a height adjustment component. The sleeve is sleeved around the outside of the screw rod. The side of the sleeve is connected to the welding head through the connecting structure. The height adjustment component is arranged at the end of the sleeve. The height adjustment component is used to adjust the height of the screw rod relative to the plane where the workpiece to be welded is located, so as to adjust the height of the feeding component relative to the plane where the workpiece to be welded is located.

5. The laser welding device according to claim 4, characterized in that: The height adjustment assembly includes a flat nut, which matches the thread of the lead screw and is respectively arranged at the upper and lower ends of the sleeve. The flat nut is used to adjust the position of the flat nut on the lead screw so that the lead screw can move up and down in the sleeve, and after the lead screw reaches a predetermined height, the flat nuts located at the upper and lower ends of the sleeve are adjusted to be tightly attached to the end face of the sleeve to fix the lead screw.

6. The laser welding device according to claim 4, characterized in that: The auxiliary adjustment component includes a horizontal rotation adjustment component, which is arranged at the end of the welding head close to the plane where the workpiece to be welded is located and connected to the welding head. The side of the horizontal rotation adjustment component is fixedly connected to the side of the sleeve through the connecting structure. The horizontal rotation adjustment component is used to rotate around the common axis of the welding head and the horizontal rotation adjustment component at the end of the welding head to adjust the horizontal rotation angle of the material supply structure.

7. The laser welding device according to claim 3, characterized in that: The auxiliary adjustment assembly includes a vertical rotation adjustment assembly, which is arranged at the end of the screw rod close to the plane where the workpiece to be welded is located. The screw rod is connected to the feeding assembly through the vertical rotation adjustment assembly. The vertical rotation adjustment assembly is used to rotate around the connection point between the vertical rotation adjustment assembly and the screw rod to adjust the vertical rotation angle of the feeding assembly.

8. The laser welding device according to claim 7, characterized in that: The feeding assembly comprises a conveying pipe, the vertical rotation adjustment assembly is fixedly connected to the conveying pipe, and the output port of the conveying pipe is close to the welding position.

9. The laser welding device according to claim 8, characterized in that: The feeding assembly also includes a feeder, which is connected to the input port of the conveying pipe. The feeder is used to convey the filling material required for welding the workpieces to be welded into the conveying pipe. The filling material includes welding powder and welding wire with the same metal properties as the workpieces to be welded.

10. The laser welding device according to claim 1, characterized in that: The laser welding device also includes a water cooling system and a protective gas delivery system; The water cooling system is connected to the welding structure and is used to cool the welding structure; The protective gas delivery system is connected to the welding structure and the workpiece to be welded respectively, and is used to provide protective gas to the area where the welding is located to isolate the influence of air on the welding process.

Images