Laser welding device

Abstract

The present application relates to the field of welding technology, and aims to solve the technical problem that the welding quality of the first workpiece on the product is not high, and provides a laser welding device, which includes a carrier, a positioning mechanism, a clamping mechanism and a welding mechanism. The carrier is provided with a carrying position for carrying the product. The positioning mechanism defines a positioning space, and the positioning space is used to accommodate the first workpiece so that the first workpiece and the welding position are arranged relative to each other along a first direction. The clamping mechanism is located on the side of the positioning mechanism away from the carrier along the first direction. The clamping mechanism is used to clamp the first workpiece through the positioning space so that the first workpiece remains in contact with the product. The clamping mechanism is provided with a avoidance port, which is arranged relative to the welding position in the first direction, and forms a laser channel relative to the positioning space along the first direction. The welding mechanism is used to emit a welding laser through the laser channel to weld the first workpiece to the welding position of the product. The beneficial effect of the present application is to improve the welding quality of the first workpiece on the product.

Description

Technical Field

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

[0002] Laser welding is a welding method that uses a laser beam. Laser welding has high requirements for the positioning of the workpiece. The positioning components of larger workpieces can easily avoid the laser beam, but it is more difficult for small workpieces to avoid the laser beam. It mainly relies on manual assembly and then completes the welding. The positioning effect is poor, and the workpieces are prone to collision, scratching, and crushing, resulting in low welding quality. Summary of the invention

[0003] The present application provides a laser welding device to solve the technical problem of low welding quality of workpieces on products.

[0004] The embodiment of the present application is implemented as follows:

[0005] The present application provides a laser welding device for laser welding a first workpiece to a welding position of a product, comprising a carrier, a positioning mechanism, a clamping mechanism and a welding mechanism. The carrier is provided with a carrying position for carrying the product. The positioning mechanism defines a positioning space, and the positioning space is used to accommodate the first workpiece so that the first workpiece and the welding position are arranged relative to each other along a first direction. The clamping mechanism is located on the side of the positioning mechanism away from the carrier along the first direction, and the clamping mechanism is used to clamp the first workpiece through the positioning space so that the first workpiece remains in contact with the product. The clamping mechanism is provided with a avoidance port, and the avoidance port is arranged relative to the welding position in the first direction, and forms a laser channel relative to the positioning space along the first direction. The welding mechanism is used to emit a welding laser through the laser channel to weld the first workpiece to the welding position of the product.

[0006] In the laser welding device of the present application, the positioning mechanism can move to the product carried by the carrier, and then place the first workpiece in the positioning space, so that the first workpiece can be arranged relative to the welding position in the first direction Z, and the deviation between the position of the first workpiece on the product and the welding position can be effectively controlled. The clamping mechanism can extend into the other side of the positioning mechanism through the positioning space and clamp the first workpiece, and keep the first workpiece against the product. Through the limiting and clamping action of the positioning space and the clamping mechanism, the first workpiece is kept against the welding position of the product during the welding process, reducing the possibility of relative displacement between the first workpiece and the product, reducing the problem of cold welding caused by inaccurate positioning or gap between the first workpiece and the product, and better ensuring the welding quality of the first workpiece on the product. At the same time, the avoidance port on the clamping mechanism is arranged relative to the welding position, and also forms a laser channel relative to the positioning space along the first direction, so that the welding laser emitted by the welding mechanism along the first direction can reach the first workpiece without interference, so that there is no need to adjust the path of the welding laser to avoid the positioning mechanism, reducing the path complexity of the welding laser and reducing the control difficulty of laser welding.

[0007] In one possible implementation:

[0008] The positioning space is a tapered hole that penetrates the positioning mechanism along a first direction, and a cross-sectional area of ​​the tapered hole increases in a direction away from the carrier in the first direction.

[0009] In one possible implementation:

[0010] The first workpiece includes a first welding portion, the outer peripheral surface of the first welding portion includes a straight surface and a curved surface connected in sequence, the hole surface of the conical hole includes a flat cone surface and a curved cone surface connected in sequence, and the flat cone surface is used to guide the straight surface so that after the first workpiece is placed in the welding position, the straight surface extends along the second direction.

[0011] In one possible implementation:

[0012] The laser welding device further comprises a transfer assembly, and the transfer assembly is used to grab the first workpiece and place the first workpiece in the positioning space.

[0013] In one possible implementation:

[0014] The product includes a plate body and a raised edge, wherein the raised edge is raised along one side of the plate body, and the positioning mechanism includes a positioning portion, wherein the positioning portion includes a first end and a second end, wherein the first end is located on the outside of the bearing position, and the second end is located on the inside of the bearing position and defines the conical hole, and the positioning portion is arranged to extend obliquely in a direction close to the bearing position so as to define an avoidance space between the positioning portion and the carrier for avoiding the raised edge.

[0015] In one possible implementation:

[0016] The positioning mechanism includes a positioning drive and a positioning plate. The positioning drive is provided on the carrier. The first end is provided on the positioning plate, the positioning plate is transmission-connected to the positioning drive, and can move along a first direction under the drive of the positioning drive, and make the raised edge enter the avoidance space, and make the second end close to the plate body, so that the tapered hole can position the first workpiece.

[0017] In one possible implementation:

[0018] The conical hole is also provided with a straight hole extending along the first direction at one end close to the carrier, the cross section of the straight hole is adapted to the cross section of the first welding part, and the length of the straight hole in the first direction is not less than the thickness of the first welding part in the first direction.

[0019] In one possible implementation:

[0020] The clamping mechanism comprises a base member, a clamping member and an elastic member. The clamping member is movably arranged on the base member along a first direction. The elastic member supports a first workpiece between the base member and the clamping member along the first direction.

[0021] In one possible implementation:

[0022] The first workpiece includes a first pressing part and a first welding part, the first pressing part is arranged on the first welding part and is located on the inner side of the first welding part, the clamping mechanism includes a clamping member, and the clamping member includes a main body and a pressing part. The main body is provided with a through hole penetrating along a first direction. The pressing part is arranged in the through hole and connected to the main body, the outer wall of the pressing part is spaced apart from the inner surface of the through hole, and defines the avoidance, the pressing part can cooperate with the first pressing part, and the outer peripheral surface of the first pressing part and the outer peripheral surface of the first welding part are arranged relative to the avoidance along the first direction.

[0023] The embodiment of the present application also provides another laser welding device, which is used to weld a first workpiece and a second workpiece to a first welding position and a second welding position of a product, respectively. The laser welding device includes a carrier, a positioning mechanism, a clamping mechanism and a welding mechanism. A bearing position for carrying the product is provided, and a welding positioning column capable of passing through the second welding position of the product is provided, and the second workpiece can be sleeved on the welding positioning column. The positioning mechanism defines a positioning space, and the positioning space is used to accommodate the first workpiece so that the first workpiece and the first welding position are arranged relative to each other along a first direction. The clamping mechanism is located on the side of the positioning mechanism away from the carrier, and the clamping mechanism is used to clamp the first workpiece through the positioning space, and at the same time, the second workpiece sleeved on the welding positioning column is pressed, so that the first workpiece and the second workpiece are kept against the product, and the clamping mechanism is also provided with a plurality of avoidances, and the plurality of avoidances are respectively arranged relative to the first welding position and the second welding position in the first direction, and can form a laser channel relative to the positioning space along the first direction. The welding mechanism is used to emit a welding laser passing through the avoidance to weld the first workpiece and the second workpiece at the first welding position and the second welding position, respectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 This is one of the structural schematic diagrams of a laser welding device according to an embodiment of the present application;

[0026] Figure 2 This is a schematic diagram of the structure of a carrier, a positioning mechanism and a pressing mechanism according to an embodiment of the present application;

[0027] Figure 3 A schematic diagram of the partial structure of a carrier, a product, a first workpiece, and a second workpiece according to an embodiment of the present application;

[0028] Figure 4 This is a schematic structural diagram of a positioning portion according to an embodiment of the present application;

[0029] Figure 5 This is a schematic diagram of the exploded structure of a clamping mechanism according to an embodiment of the present application;

[0030] Figure 6 A first cross-sectional view of a laser welding device according to an embodiment of the present application;

[0031] Figure 7 This is a schematic structural diagram of a transfer assembly, a first workpiece, and a second workpiece according to an embodiment of the present application;

[0032] Figure 8 This is a second structural schematic diagram of a laser welding device according to an embodiment of the present application;

[0033] Fig. 9 A side view of a laser welding device according to an embodiment of the present application;

[0034] Fig.10 A second cross-sectional view of the laser welding device according to an embodiment of the present application;

[0035] Fig.11 A third cross-sectional view of the laser welding device according to an embodiment of the present application;

[0036] Fig.12 This is the third structural schematic diagram of the laser welding device according to an embodiment of the present application.

[0037] Description of main component symbols:

[0038] Laser welding device 100

[0039] Vehicle 10

[0040] Loading plate 11

[0041] Loading position 111

[0042] Mounting plate 12

[0043] Welding positioning column 13

[0044] First positioning column 14

[0045] Second positioning column 15

[0046] The third positioning column 16

[0047] Guide rod 17

[0048] Positioning mechanism 20

[0049] Positioning portion 21

[0050] The first end portion 211

[0051] The second end portion 212

[0052] Bending part 213

[0053] Positioning space 22

[0054] Conical hole 23

[0055] Flat cone 231

[0056] Arc cone 232

[0057] Straight hole 24

[0058] Positioning drive 25

[0059] Positioning plate 26

[0060] Positioning guide sleeve 27

[0061] Clamping mechanism 30

[0062] Avoidance 31

[0063] Basic parts 32

[0064] Press plate 321

[0065] Basic Block 322

[0066] Travel hole 323

[0067] Limiting part 324

[0068] Pressing piece 33

[0069] Main body 331

[0070] Through hole 332

[0071] Pressing part 333

[0072] Elastic member 34

[0073] Press drive 35

[0074] Press guide sleeve 36

[0075] Welding mechanism 40

[0076] Welding Laser 41

[0077] Transfer component 50

[0078] The first adsorption part 51

[0079] Second adsorption part 52

[0080] Robot 53

[0081] Movement mechanism 60

[0082] Machine 71

[0083] Linear module 72

[0084] Guide mechanism 73

[0085] Slide 731

[0086] Guide block 732

[0087] The first feeding mechanism 74

[0088] Second feeding mechanism 75

[0089] Image acquisition component 76

[0090] Gantry 77

[0091] Feeding mechanism 78

[0092] Unloading robot arm 781

[0093] Grab piece 782

[0094] First workpiece 200

[0095] First welding part 201

[0096] First pressing part 202

[0097] Product 300

[0098] First welding position 301

[0099] Second welding position 302

[0100] Plate 303

[0101] Edge 304

[0102] Second workpiece 400

[0103] Second welding part 401

[0104] Second pressing part 402

[0105] Avoidance space 500

[0106] First direction Z

[0107] Second direction Y

[0108] The third direction X DETAILED DESCRIPTION

[0109] The technical solutions 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, rather than all of the embodiments.

[0110] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be a centered element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may also be a centered element. When an element is considered to be "set on" another element, it may be directly set on the other element or there may also be a centered element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0111] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present application. The terms used herein in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "or / and" used herein includes any and all combinations of one or more related listed items.

[0112] Some embodiments of the present application are described in detail. In the absence of conflict, the following embodiments and features of the embodiments can be combined with each other.

[0113] Example

[0114] Laser welding is a welding method that uses a laser beam. Laser welding has high requirements for the positioning of the workpiece. When the known positioning components are used to position a small workpiece on the product, it is easy for the path of the laser beam to conflict and interfere. When the workpiece is placed on the product manually, it is easy for the position of the workpiece to deviate. The above problems are likely to lead to the problem of low welding quality of the workpiece.

[0115] Therefore, the applicant proposes a laser welding device in the embodiment of the present application. The embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.

[0116] See also Figure 1 and Figure 2The present embodiment provides a laser welding device 100, which is used for laser welding a first workpiece 200 to a welding position of a product 300, and includes a carrier 10, a positioning mechanism 20, a clamping mechanism 30 and a welding mechanism 40. The carrier 10 is provided with a carrying position 111 for carrying the product 300. The positioning mechanism 20 defines a positioning space 22, and the positioning space 22 is used to accommodate the first workpiece 200, so that the first workpiece 200 is arranged opposite to the welding position along the first direction Z. The clamping mechanism 30 is located on the side of the positioning mechanism 20 away from the carrier 10 along the first direction Z. The clamping mechanism 30 is used to clamp the first workpiece 200 through the positioning space 22, so that the first workpiece 200 remains against the product 300. The clamping mechanism 30 is provided with an avoidance opening 31, and the avoidance opening 31 is arranged opposite to the welding position in the first direction Z, and forms a laser channel opposite to the positioning space 22 along the first direction Z. The welding mechanism 40 is used to emit a welding laser through the laser channel to weld the first workpiece 200 to the welding position of the product 300.

[0117] In this embodiment, the positioning mechanism 20 can move to the product 300 carried by the carrier 10, and then place the first workpiece 200 in the positioning space 22, so that the first workpiece 200 can be arranged relative to the welding position in the first direction Z, effectively controlling the position of the first workpiece 200 on the product 300 to not deviate from the welding position. The clamping mechanism 30 can extend into the other side of the positioning mechanism 20 through the positioning space 22 and clamp the first workpiece 200, and keep the first workpiece 200 in the welding position against the product 300. In this embodiment, as an example, the welding position is Figure 2 The first welding position 301 is shown. Through the cooperation between the positioning space 22 and the clamping mechanism 30, the first workpiece 200 is kept against the product 300 during the welding process, reducing the possibility of relative displacement between the first workpiece 200 and the product 300, avoiding the problem of cold welding caused by inaccurate positioning or gap between the first workpiece 200 and the product 300, and better ensuring the welding quality of the first workpiece 200 on the product 300. At the same time, the avoidance opening 31 on the clamping mechanism 30 is arranged relative to the welding position, and also forms a laser channel relative to the positioning space 22 along the first direction Z, so that the welding laser 41 emitted by the welding mechanism 40 along the first direction Z can reach the first workpiece 200 without interference, so that there is no need to adjust the path of the welding laser 41 to avoid the positioning mechanism 20, reducing the path complexity of the welding laser 41 and reducing the control difficulty of laser welding.

[0118] In some embodiments, see Figure 3 and Figure 4, the positioning space 22 passes through the tapered hole 23 of the positioning mechanism 20 along the first direction Z, and the cross-sectional area of ​​the tapered hole 23 increases in the first direction Z in the direction away from the carrier 10. Placing the first workpiece 200 in the direction where the product 300 is away from the carrier 10 is in line with operating habits. Since the first workpiece 200 is small in size, placing the first workpiece 200 directly at the welding position of the product 300 will easily cause problems such as misalignment or tilting of the first workpiece 200. When the first workpiece 200 is placed in the positioning space 22, the tapered hole 23 passing through along the first direction Z can guide the first workpiece 200, so that the first workpiece 200 can be accurately placed at the welding position, and it is not easy to cause misalignment or tilting under the restriction of the tapered hole 23. In addition, by guiding the placement of the first workpiece 200 through the tapered hole 23, the first workpiece 200 can complete the final positioning under the action of its own gravity without applying additional force to the first workpiece 200, thereby avoiding collisions between the first workpiece 200 and the tapered hole 23, and between the first workpiece 200 and the product 300, thereby avoiding collisions, scratches, and crushing between the first workpiece 200 and the product 300, thereby improving the appearance protection effect of the first workpiece 200 and the product 300.

[0119] As an example, see Figure 4 and Figure 6 In this embodiment, the first workpiece 200 includes a first welding portion 201, and a straight hole 24 extending along the first direction Z is further provided at one end of the tapered hole 23 close to the carrier 10. The outer surface of the first welding portion 201 can be attached to the surface of the straight hole 24, and the length of the straight hole 24 in the first direction Z is not less than the thickness of the first welding portion 201 in the first direction Z. If the end of the tapered hole 23 abuts against the product 300, after the first workpiece 200 is placed in the welding position, there is a gap between the outer peripheral surface of the first welding portion 201 and the surface of the tapered hole 23. In the process of moving the product 300, the first workpiece 200 may still shake and tilt. In this embodiment, the straight hole 24 limits the first welding portion 201. Even if the product 300 shakes slightly, the first workpiece 200 is difficult to shake under the restriction of the straight hole 24, so that it remains stably placed in the welding position, ensuring the welding quality of the first workpiece 200 on the product 300.

[0120] In some embodiments, see Figure 3 and Figure 6 The product 300 includes a plate body 303 and a warped edge 304, the warped edge 304 is warped along one side of the plate body 303, the plate body 303 and the warped edge 304 intersect at a straight line parallel to the second direction Y, and the second direction Y is oblique to or perpendicular to the first direction Z.

[0121] As an example, in this embodiment, the first workpiece 200 includes a first welding portion 201, the outer peripheral surface of the first welding portion 201 includes a straight surface and a curved surface connected in sequence, the hole surface of the conical hole 23 includes a flat cone surface 231 and a curved cone surface 232 connected in sequence, and the flat cone surface 231 is used to guide the straight surface so that after the first workpiece 200 is placed in the welding position, the straight surface extends along the second direction Y.

[0122] It can be understood that, in this embodiment, the flat cone surface 231 refers to a plane in an inclined state, and the arc cone surface 232 refers to a cone surface with an arc-shaped cross section, and the two ends of the arc are respectively connected to the two sides of the plane.

[0123] When the first workpiece 200 is placed manually or by mechanical equipment, due to the size of the first workpiece 200 itself, after the first workpiece 200 is placed on the product 300, the straight surface of the first welding portion 201 cannot be accurately parallel to the second direction Y, and it is also easy to shake during the movement of the product 300, causing the straight surface to be offset. In this embodiment, when the first workpiece 200 approaches the product 300 along the tapered hole 23, the flat tapered surface 231 can guide the straight surface to move along the first direction Z, and the arc tapered surface 232 can guide the arc tapered surface to move along the first direction Z, and when the straight surface is not flush with the flat tapered surface 231, the surface of the tapered hole 23 collides with the first welding portion 201, and the first workpiece 200 touches the surface of the tapered hole 23 under the action of its own gravity, so that the tapered hole 23 can guide and correct the position of the first workpiece 200, and finally make the straight surface of the first workpiece 200 flush with the flat tapered surface 231 of the tapered hole 23, and parallel to the second direction Y, to ensure that the first workpiece 200 is located at the welding position of the product 300.

[0124] In some embodiments, see Fig.12 The laser welding device 100 further includes a transfer assembly 50 , which is used to grab the first workpiece 200 and place the first workpiece 200 in the positioning space 22 .

[0125] The transfer assembly 50 can realize automatic loading of the first workpiece 200, and can realize the accurate entry of the first workpiece 200 into the positioning space 22. Through the cooperation between the transfer assembly 50 and the positioning space 22, the placement accuracy of the first workpiece 200 can be improved while ensuring the loading efficiency. The final placement of the first workpiece 200 at the welding position does not need to be completed by the transfer assembly 50. In addition, the transfer assembly 50 can also pre-adjust the position of the first workpiece 200 so that the angle between the straight surface and the flat conical surface 231 of the first welding part 201 is smaller, thereby ensuring the guiding effect of the conical hole 23 on the first welding part 201. At the same time, the conical hole 23 can also reduce the accuracy of the transfer assembly 50 in grasping the first workpiece 200. The combination of the two can simultaneously improve the placement efficiency of the first workpiece 200 and the welding quality of the first workpiece 200 in the product 300.

[0126] As an example, in this embodiment, see Figure 7 and Fig.12 The transfer assembly 50 includes a robot arm 53 and a first adsorption portion 51, and the first adsorption portion 51 is used to adsorb the first workpiece 200. The first adsorption portion 51 can be set to a known vacuum suction head structure.

[0127] In some embodiments, see Figure 1 The laser welding device 100 also includes an image acquisition component 76, which is used to obtain image information of the first workpiece 200 on the first adsorption portion 51. The manipulator 53 can control the first adsorption portion 51 to drive the first workpiece 200 to move according to the image information acquired by the image acquisition component 76, and make the straight surface of the first welding portion 201 roughly parallel to the second direction Y, thereby improving the placement accuracy of the first workpiece 200 at the welding position.

[0128] As an example, in this embodiment, the image acquisition component 76 includes a camera, a lens, and a light source. The camera, the lens, and the light source are sequentially arranged at intervals along the first direction Z. The camera can adopt the following parameters: 500W pixels, 2448*2048 resolution, 3.45um / Pixel pixel accuracy, and 0.02mm shooting error. The lens is a telecentric lens and has a field of view of 13.2mm*17.6mm. In this embodiment, the specific structure and related parameters of the image acquisition component 76 can be adjusted and replaced according to actual needs.

[0129] In some embodiments, see Figure 4 and Figure 6The positioning mechanism 20 includes a positioning portion 21, and the positioning portion 21 includes a first end 211 and a second end 212. The first end 211 is located outside the bearing position 111, and the second end 212 is located inside the bearing position 111 and defines a tapered hole 23. The positioning portion 21 is inclined and extended in a direction close to the bearing position 111 to define an avoidance space 500 for avoiding the warped edge 304 between the carrier 10. By extending the positioning portion 21 into the bearing position 111 and defining the tapered hole 23, only a small part of the positioning mechanism 20 is located on the product 300, thereby greatly reducing the problem of collision between the positioning mechanism 20 and the product 300 and causing appearance damage.

[0130] In addition, in the present embodiment, when the positioning mechanism 20 positions the first workpiece 200, the inclined structure of the positioning portion 21 is also conducive to achieving the spacing of the second end 212 and the product 300, so as to avoid the second end 212 pressing on the product 300 and causing appearance damage to the product 300. Compared with the known positioning components that need to rest against the product 300, the positioning mechanism 20 of the present embodiment can not only achieve the positioning effect of the first workpiece 200, but also play a better role in protecting the appearance.

[0131] As an example, in this embodiment, the positioning portion 21 further includes a bending portion 213 , and two ends of the bending portion 213 are respectively connected to the first end portion 211 and the second end portion 212 .

[0132] In some embodiments, see Fig. 9 The positioning mechanism 20 includes a positioning drive 25 and a positioning plate 26. The positioning drive 25 is disposed on the carrier 10. The first end 211 is disposed on the positioning plate 26, and the positioning plate 26 is transmission-connected to the positioning drive 25 and can move along the first direction Z under the drive of the positioning drive 25, and make the raised edge 304 enter the avoidance space 500, and make the second end 212 close to the plate body 303, so that the tapered hole 23 can position the first workpiece 200.

[0133] In some embodiments, see Figure 5 and Figure 6The clamping mechanism 30 includes a base member 32, a clamping member 33 and an elastic member 34. The clamping member 33 is movably disposed on the base member 32 along the first direction Z. The elastic member 34 supports the first workpiece 200 between the base member 32 and the clamping member 33 along the first direction Z. After the base member 32 approaches the carrier 10 along the first direction Z and the clamping member 33 abuts against the first workpiece 200, the base member 32 continues to move a distance closer to the carrier 10 along the first direction Z, and the elastic member 34 is elastically deformed. After the elastic member 34 applies elastic force to the clamping member 33, the elastic force is transmitted to the first workpiece 200 through the clamping member 33, and the first workpiece 200 abuts against the product 300 under the action of the elastic force. In this way, the first workpiece 200 can be ensured to be against the product 300 to avoid the problem of cold welding, and the force of the first workpiece 200 on the product 300 can be reduced to avoid compression between the first workpiece 200 and the product 300, ensuring the surface appearance of the product 300 is intact.

[0134] In some embodiments, see Figure 6 The first workpiece 200 also includes a first pressing portion 202, which is arranged on the first welding portion 201 and located on the inner side of the first welding portion 201. The clamping member 33 includes a main body 331 and a pressing portion 333. The main body 331 is provided with a through hole 332 that penetrates along the first direction Z. The pressing portion 333 is arranged in the through hole 332 and connected to the main body 331. The outer wall of the pressing portion 333 is spaced apart from the inner surface of the through hole 332, and defines an avoidance opening 31. The pressing portion 333 can cooperate with the first pressing portion 202, and the outer peripheral surface of the first pressing portion 202 and the outer peripheral surface of the first welding portion 201 are arranged relative to the avoidance opening 31 along the first direction Z.

[0135] As an example, in this embodiment, see Figure 6 The base member 32 includes a clamping plate 321 and a base block 322. The clamping plate 321 is provided with a travel hole 323, and the base block 322 is fixedly arranged in the travel hole 323. The clamping member 33 is slidably fitted in the travel hole 323 along the first direction Z, and the elastic member 34 is elastically supported between the base block 322 and the clamping member 33. The clamping plate 321 is also provided with a limiting portion 324, which is convexly arranged in the travel hole 323 and is used to limit the clamping member 33 from escaping from the travel hole 323, thereby ensuring that the clamping member 33 is hung on the clamping plate 321, and the normal operation of the clamping mechanism 30 is better guaranteed.

[0136] In some embodiments, see Fig. 9 The clamping mechanism 30 further includes a clamping driving member 35 , which is connected to the base member 32 and can drive the base member 32 to move along the first direction Z. The clamping member 33 can clamp the first workpiece 200 to the welding position of the product 300 under the elastic force of the elastic member 34 .

[0137] In some embodiments, see Figure 2 The carrier 10 includes a mounting plate 12 and a bearing plate 11, the bearing plate 11 is arranged on one side of the mounting plate 12, and the bearing position 111 is arranged on the bearing plate 11. The clamping drive member 35 and the positioning drive member 25 are fixedly arranged on the other side of the mounting plate 12, and respectively pass through the mounting plate 12 to be transmission-connected with the base member 32 and the positioning plate 26. As an example, in this embodiment, the clamping drive member 35 and the positioning drive member 25 are cylinders respectively, and in other embodiments, they can also be respectively set as linear modules 72 or electric push rods, etc.

[0138] In some embodiments, see Figure 2 and Fig. 9 The carrier 10 further includes a first positioning column 14, a second positioning column 15 and a third positioning column 16, and the first positioning column 14, the second positioning column 15 and the third positioning column 16 are respectively arranged on the mounting plate 12. The first positioning column 14 is used to position the carrier plate 11. The second positioning column 15 is used to pass through the mounting plate 12 and the base member 32 at the same time to simultaneously position the clamping mechanism 30 and the positioning mechanism 20. The third positioning column 16 is used to pass through the mounting plate 12 to position the positioning mechanism 20 so that the positioning space 22 corresponds to the welding position in the first direction Z. Through the cooperation of the second positioning column 15 and the third positioning column 16, it can be ensured to a high degree that the clamping member 33, the positioning space 22 and the welding position are relatively arranged in the first direction Z, thereby ensuring the welding quality and improving the welding yield.

[0139] In some embodiments, see Figure 8 and Fig. 9 The carrier 10 further includes a plurality of guide rods 17, which are spaced apart on the mounting plate 12 and extend along the first direction Z. The positioning mechanism 20 further includes a positioning guide sleeve 27, which is disposed on the positioning plate 26. The clamping mechanism 30 further includes a clamping guide sleeve 36, which is disposed on the clamping driving member 35. A guide rod 17 is inserted into the positioning guide sleeve 27, and another guide rod 17 is inserted into the clamping guide sleeve 36. Through the cooperation of the guide rod 17, the positioning guide sleeve 27 and the clamping guide sleeve 36, the positioning plate 26 and the base member 32 can be guided to move respectively along the first direction Z. In other implementations of the present embodiment, the guide rod 17, the positioning guide sleeve 27 and the clamping guide sleeve 36 can also be replaced by other guide structures such as guide rail sliders.

[0140] In some embodiments, see Figure 8 and Fig. 9, the laser welding device 100 also includes a machine table 71, a linear module 72 and a guide mechanism 73. The linear module 72 and the guide mechanism 73 are both arranged on the machine table 71. The mounting plate 12 of the carrier 10 is transmission-connected to the linear module 72, and is also connected to the machine table 71 through the guide mechanism 73. The linear module 72 is used to drive the carrier 10 to move along the second direction Y, and the guide mechanism 73 is used to guide the carrier 10 to move along the second direction Y. The product 300 is provided with a plurality of welding positions, and is arranged along the second direction Y. By driving the carrier 10 to move along the second direction Y through the linear module 72, the welding mechanism 40 can sequentially weld the first workpiece 200 to the product 300, thereby improving the welding efficiency of the plurality of first workpieces 200 on the product 300. In other implementations of this embodiment, the linear module 72 can also be set as a conveyor belt structure.

[0141] As an example, in this embodiment, see Fig. 9 The guide mechanism 73 includes a slide rail 731 and a guide block 732. The slide rail 731 is extended along the second direction Y, and the guide block 732 is slidably disposed on the slide rail 731, and the guide block 732 is connected to the mounting plate 12. The guide block 732 cooperates with the slide rail 731 to guide the carrier 10, thereby preventing the welding laser 41 from accurately reaching the welding position on the product 300 along the first direction Z during the welding process of the welding mechanism 40, thereby ensuring the welding quality and improving the welding yield.

[0142] In some embodiments, see Figure 1 The laser welding device 100 also includes a gantry 77, which is mounted on the machine platform 71 along the third direction X. The gantry 77 is provided with a moving mechanism 60, which is connected to the welding mechanism 40 and can drive the welding mechanism 40 to move along the third direction X.

[0143] In some embodiments, see Figure 1 Two carriers 10 are provided and are arranged on the machine platform 71 along the third direction X to achieve simultaneous processing and welding of multiple products 300.

[0144] In some embodiments, see Figure 1 The laser welding device 100 further includes a first feeding mechanism 74 for conveying the first workpiece 200 to the transfer assembly 50. As an example, in this embodiment, the first feeding mechanism 74 is a vibration plate, and in other implementations of this embodiment, the first feeding mechanism 74 can also be set as a feeding plate.

[0145] See also Figure 1 , Figure 2 and Fig.11The embodiment of the present application also provides another laser welding device 100, which is used to weld the first workpiece 200 and the second workpiece 400 to the first welding position 301 and the second welding position 302 of the product 300 respectively. The laser welding device 100 includes a carrier 10, a positioning mechanism 20, a clamping mechanism 30 and a welding mechanism 40. A carrying position 111 for carrying the product 300 is provided, and a welding positioning column 13 capable of passing through the second welding position 302 of the product 300 is provided, and the second workpiece 400 can be sleeved on the welding positioning column 13. The positioning mechanism 20 defines a positioning space 22, and the positioning space 22 is used to accommodate the first workpiece 200, so that the first workpiece 200 and the first welding position 301 are arranged relative to each other along the first direction Z. The clamping mechanism 30 is located on the side of the positioning mechanism 20 away from the carrier 10. The clamping mechanism 30 is used to clamp the first workpiece 200 through the positioning space 22, and at the same time, to clamp the second workpiece 400 sleeved on the welding positioning column 13, so that the first workpiece 200 and the second workpiece 400 are kept against the product 300. The clamping mechanism 30 is also provided with a plurality of avoidance openings 31, which are respectively arranged opposite to the first welding position 301 and the second welding position 302 in the first direction Z, and can form a laser channel opposite to the positioning space 22 along the first direction Z. The welding mechanism 40 is used to emit a welding laser 41 passing through the avoidance openings 31, so as to weld the first workpiece 200 and the second workpiece 400 at the first welding position 301 and the second welding position 302, respectively.

[0146] By arranging a welding positioning column 13 on the carrier 10 for limiting the second workpiece 400, and defining a positioning space 22 through a positioning mechanism 20 for limiting the first workpiece 200, the carrier 10 and the positioning mechanism 20 can simultaneously position the first workpiece 200 and the second workpiece 400 during operation of the laser welding device 100, and the clamping mechanism 30 can simultaneously clamp the first workpiece 200 and the second workpiece 400, and the avoidance opening 31 on the clamping mechanism 30 can also allow the laser to pass through the laser channel, so that the carrier 10 can realize welding of the first workpiece 200 and the second workpiece 400 while driving the product 300 to move, thereby improving the welding efficiency of the first workpiece 200 and the second workpiece 400 on the product 300.

[0147] See also Fig.10 The second workpiece 400 includes a second welding portion 401 and a second pressing portion 402, and the second pressing portion 402 is disposed on the second welding portion 401. The welding positioning column 13 can simultaneously pass through the second welding portion 401 and the second pressing portion 402. The second pressing portion 402 is provided with a pressing protrusion, corresponding to the pressing member 33 of the second workpiece 400, and the pressing portion 333 is also sleeved on the pressing protrusion to play a further limiting role.

[0148] In some embodiments, see Figure 1The laser welding device 100 further includes a second loading mechanism 75 for conveying the second workpiece 400 to the transfer assembly 50. As an example, in this embodiment, the second loading mechanism 75 is a vibration plate. In other implementations of this embodiment, the second loading mechanism 75 can also be set as a loading plate. Figure 7 The transfer assembly 50 further includes a second adsorption portion 52 , and the second adsorption portion 52 is used to grab the second workpiece 400 .

[0149] In some embodiments, see Fig.12 The laser welding device 100 further includes a material unloading mechanism 78, which includes a material unloading mechanical arm 781 and a gripper 782. Suction cups are respectively provided on both sides of the gripper 782 to simultaneously adsorb the products 300 on the two carriers 10, thereby improving the material unloading efficiency. In other implementations of this embodiment, the material unloading mechanism 78 can also be set as an assembly line and docked with the aforementioned conveyor belt structure.

[0150] In summary of the above description, the positioning mechanism 20 of the laser welding device 100 of the present application can move to the product 300 carried by the carrier 10, and then place the first workpiece 200 in the positioning space 22, so that the first workpiece 200 can be arranged relative to the welding position in the first direction Z, and the position of the first workpiece 200 on the product 300 is effectively controlled not to deviate from the welding position. The clamping mechanism 30 can extend into the other side of the positioning mechanism 20 through the positioning space 22 and clamp the first workpiece 200, and keep the first workpiece 200 in the welding position against the product 300. Through the cooperation of the positioning space 22 and the clamping mechanism 30, the first workpiece 200 is kept against the product 300 during the welding process, reducing the possibility of relative displacement between the first workpiece 200 and the product 300, avoiding the problem of cold welding caused by inaccurate positioning or gap between the first workpiece 200 and the product 300, and better ensuring the welding quality of the first workpiece 200 on the product 300. At the same time, the avoidance opening 31 on the clamping mechanism 30 is arranged relative to the welding position, and also forms a laser channel relative to the positioning space 22 along the first direction Z, so that the welding laser 41 emitted by the welding mechanism 40 along the first direction Z can reach the first workpiece 200 without interference, so that there is no need to adjust the path of the welding laser 41 to avoid the positioning mechanism 20, thereby reducing the path complexity of the welding laser 41 and reducing the control difficulty of laser welding.

[0151] The above implementation modes are only used to illustrate the technical solutions of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the above preferred implementation modes, a person skilled in the art should understand that the technical solutions of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A laser welding device for laser welding a first workpiece to a welding position of a product, characterized in that: include: A carrier, provided with a carrying position for carrying the product; A positioning mechanism, wherein the positioning mechanism defines a positioning space, the positioning space is used to accommodate the first workpiece so that the first workpiece and the welding position are arranged opposite to each other along a first direction, the positioning space is a tapered hole that passes through the positioning mechanism along the first direction, and the cross-sectional area of ​​the tapered hole increases in the first direction away from the carrier; a clamping mechanism, the clamping mechanism being located at a side of the positioning mechanism away from the carrier along the first direction, the clamping mechanism being used to clamp the first workpiece through the positioning space so that the first workpiece remains in contact with the product, the clamping mechanism being provided with an avoidance opening, the avoidance opening being arranged opposite to the welding position in the first direction, and forming a laser channel opposite to the positioning space along the first direction; a welding mechanism, for emitting a welding laser through the laser channel to weld the first workpiece to a welding position of the product; The product includes a plate body and a raised edge, wherein the raised edge is raised along one side of the plate body, and the positioning mechanism includes a positioning portion, wherein the positioning portion includes a first end and a second end, wherein the first end is located on the outside of the bearing position, and the second end is located on the inside of the bearing position and defines the conical hole, and the positioning portion is arranged to extend obliquely in a direction close to the bearing position so as to define an avoidance space between the positioning portion and the carrier for avoiding the raised edge.

2. The laser welding device according to claim 1, characterized in that: The first workpiece includes a first welding portion, the outer peripheral surface of the first welding portion includes a straight surface and a curved surface connected in sequence, the hole surface of the conical hole includes a flat cone surface and a curved cone surface connected in sequence, and the flat cone surface is used to guide the straight surface so that after the first workpiece is placed in the welding position, the straight surface extends along the second direction.

3. The laser welding device according to claim 2, characterized in that: The laser welding device further comprises a transfer assembly, and the transfer assembly is used to grab the first workpiece and place the first workpiece in the positioning space.

4. The laser welding device according to claim 1, characterized in that: The positioning mechanism comprises: A positioning drive member, the positioning drive member is arranged on the carrier; A positioning plate, wherein the first end is arranged on the positioning plate, the positioning plate is transmission-connected to the positioning drive member, and can move along a first direction driven by the positioning drive member, and make the raised edge enter the avoidance space, and make the second end close to the plate body, so that the tapered hole can position the first workpiece.

5. The laser welding device according to claim 1, characterized in that: The first workpiece includes a first welding portion, and the conical hole is also provided with a straight hole extending along the first direction at one end close to the carrier. The outer surface of the first welding portion can be attached to the surface of the straight hole, and the length of the straight hole in the first direction is not less than the thickness of the first welding portion in the first direction.

6. The laser welding device according to claim 1, characterized in that: The clamping mechanism comprises: Basic parts; A pressing member, the pressing member is movably disposed on the base member along a first direction; An elastic member is supported between the base member and the pressing member along a first direction.

7. The laser welding device according to claim 1, characterized in that: The first workpiece includes a first pressing portion and a first welding portion, the first pressing portion is provided on the first welding portion and is located inside the first welding portion, the pressing mechanism includes a pressing member, and the pressing member includes: A main body, wherein the main body is provided with a through hole penetrating along a first direction; A clamping portion, wherein the clamping portion is disposed in the through hole and connected to the main body, wherein the outer wall of the clamping portion is spaced apart from the inner surface of the through hole and defines the avoidance opening, wherein the clamping portion can cooperate with the first pressing portion, and wherein the outer peripheral surface of the first pressing portion and the outer peripheral surface of the first welding portion are disposed relative to the avoidance opening along a first direction.

8. A laser welding device, characterized in that: The laser welding device is used to weld the first workpiece and the second workpiece to the first welding position and the second welding position of the product respectively, and the laser welding device comprises: A carrier, provided with a carrying position for carrying the product, and provided with a welding positioning column capable of passing through a second welding position of the product, and the second workpiece can be sleeved on the welding positioning column; A positioning mechanism, wherein the positioning mechanism defines a positioning space, wherein the positioning space is used to accommodate the first workpiece so that the first workpiece and the first welding position are arranged opposite to each other along a first direction, wherein the positioning space is a tapered hole that passes through the positioning mechanism along the first direction, and the cross-sectional area of ​​the tapered hole increases in the first direction away from the carrier, wherein the product comprises a plate body and a warped edge, wherein the warped edge is warped along one side of the plate body, wherein the positioning mechanism comprises a positioning portion, wherein the positioning portion comprises a first end portion and a second end portion, wherein the first end portion is located outside the bearing position, and the second end portion is located inside the bearing position and defines the tapered hole, wherein the positioning portion is arranged to extend obliquely in a direction close to the bearing position so as to define an avoidance space between the positioning portion and the carrier for avoiding the warped edge; A clamping mechanism, the clamping mechanism is located on a side of the positioning mechanism away from the carrier, the clamping mechanism is used to clamp the first workpiece through the positioning space, and simultaneously clamp the second workpiece sleeved on the welding positioning column, so that the first workpiece and the second workpiece are kept in contact with the product, the clamping mechanism is also provided with a plurality of avoidance openings, the plurality of avoidance openings are respectively arranged opposite to the first welding position and the second welding position in a first direction, and can form a laser channel opposite to the positioning space along the first direction; The welding mechanism is used to emit a welding laser through the avoidance opening to weld the first workpiece and the second workpiece at the first welding position and the second welding position respectively.

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