Precise laser welding device for automobile sheet metal parts

Abstract

The invention belongs to the technical field of laser welding, and particularly relates to an automobile sheet metal part precise laser welding device which comprises a connecting base, a conveying component, an adjusting component, a welding part and a pressing plate. The left-right positions of the two sheet metal parts are adjusted through the two first adjusting mechanisms, the front-back positions of the two sheet metal parts are adjusted through the two second adjusting mechanisms, the two sheet metal parts are extruded by the two pressing plates correspondingly, the two sheet metal parts are fixed, and the two sheet metal parts are welded through the welding part; the adjusting part automatically adjusts the left-right position and the front-back position of the two sheet metal parts, the two sheet metal parts are fixed through the pressing plate, and line production is carried out; the welding positions of the two sheet metal parts abut against each other through the two second adjusting mechanisms, the gap between the two sheet metal parts is reduced, and the welding quality is improved; and the sheet metal parts are pressed and fixed by the pressing plate, so that the two sheet metal parts are in a horizontal state, and the flatness of the welded sheet metal parts is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of laser welding, in particular to a precision laser welding device for automobile sheet metal parts. Background Art

[0002] Sheet metal is a comprehensive cold processing technology for thin metal plates (usually with a thickness of less than 6 mm). Its most notable feature is that the thickness of the same part is consistent. The products processed by the sheet metal process are called sheet metal parts; automotive sheet metal parts are produced by sheet metal processing for assembly in automobile assembly. In the automobile manufacturing process, the welding of sheet metal parts is an important process. Laser welding is an efficient and precise welding method that uses a high-energy-density laser beam as a heat source. Laser radiation heats the surface of the workpiece, and the surface heat diffuses to the inside through heat conduction. By controlling the width, energy, peak power and repetition frequency of the laser pulse, the workpiece is melted to form a specific molten pool. Due to its unique advantages, it has been successfully used in the precision welding of micro and small parts.

[0003] The existing welding device requires manual work to butt the welding points of the two sheet metal parts to be welded together before welding, which reduces the welding efficiency and cannot accurately control the gap between the two sheet metal parts to be welded, increasing the probability of producing defective products. Summary of the invention

[0004] In order to make up for the shortcomings of the prior art, the present invention proposes a precision laser welding device for automobile sheet metal parts. The present invention is mainly used to solve the problem that the existing welding device requires manual work to butt the welding points of two sheet metal parts to be welded together, which reduces the welding efficiency, and the gap between the two sheet metal parts to be welded cannot be accurately controlled, which increases the probability of producing defective products.

[0005] The technical solution adopted by the present invention to solve the technical problem is as follows: the present invention provides a precision laser welding device for automobile sheet metal parts, including a connecting seat, a conveying component, an adjusting component, a welding part and a pressing plate;

[0006] The connecting seat is connected to the conveying component; the conveying component is provided with two adjusting components; the conveying component is used to drive the adjusting component and the sheet metal part to move;

[0007] The adjustment component includes a mounting seat, a No. 1 adjustment mechanism and a No. 2 adjustment mechanism; the No. 1 adjustment mechanism is symmetrically arranged on the mounting seat; the No. 1 adjustment mechanism is used to adjust the left and right positions of the sheet metal part; the No. 2 adjustment mechanism is symmetrically arranged on the mounting seat; the No. 2 adjustment mechanism is used to adjust the front and rear positions of the sheet metal part;

[0008] The connecting seat is connected with a moving part; the moving part is connected with the welding part and the pressing plate; the moving part is used to drive the welding part and the pressing plate to rise or fall; the moving part is used to drive the welding part to move horizontally; the welding part is used to weld the sheet metal part;

[0009] The connecting seat is connected with a conveying component; the conveying component is used to drive the adjusting component to move.

[0010] Preferably, the conveying component includes a rotating member, a connecting plate, a first guide member, a second guide member and a power mechanism;

[0011] The rotating parts are symmetrically arranged at two ends of the connecting seat; the rotating parts are rotatably connected to the connecting seat;

[0012] A plurality of the connecting plates are adjacent end to end to form a chain structure; the end to end of the chain structure is hinged; two adjacent connecting plates are hinged; the chain structure is sleeved on the outside of the two rotating parts;

[0013] The No. 1 guides are evenly spaced on the connecting seat; the No. 2 guides are symmetrically arranged at both ends of the connecting seat; the No. 2 guide is arranged directly above the No. 1 guide; the No. 1 guide and the No. 2 guide are both rotatably connected to the connecting seat; the distance between the axes of two adjacent No. 1 guides is less than half the length of the connecting plate;

[0014] The connecting plate is symmetrically provided with plug-in structures; the mounting seat is symmetrically provided with a No. 1 slot;

[0015] The connecting seat is connected to the power mechanism; the power mechanism is used to drive the connecting plate to move.

[0016] Preferably, a No. 1 driving seat is symmetrically arranged on the connecting seat; a No. 1 slope structure is symmetrically arranged at both ends of the No. 1 driving seat; and a No. 1 plane structure is arranged between the two No. 1 slope structures;

[0017] The first adjustment mechanism is symmetrically arranged at the front and rear ends of the mounting seat; the first adjustment mechanism comprises a first sliding member, a first driving member, a first roller and a first pushing plate;

[0018] The No. 1 sliding member is symmetrically arranged on both sides of one end of the mounting seat; the No. 1 sliding member is slidably connected to the mounting seat; the No. 1 driving member is arranged on the outer side of the mounting seat; the two ends of the No. 1 driving member are respectively fixedly connected to the two No. 1 sliding members; the No. 1 driving member is rotatably connected to the No. 1 roller;

[0019] The first push plate is provided on the side where the two first sliding members are close to each other; the first push plate is provided with a first sliding groove; the first push plate and the mounting seat are connected through a first swing member and a second swing member; the first swing member and the second swing member are hinged;

[0020] One end of the No. 1 swinging member is hinged to the No. 1 sliding member; the other end of the No. 1 swinging member is hinged to the No. 1 pushing plate; one end of the No. 2 swinging member is hinged to the mounting seat; the other end of the No. 2 swinging member is rotatably connected to the No. 1 hinge shaft; the No. 1 sliding groove is slidably connected to the No. 1 hinge shaft;

[0021] The No. 1 driving member is provided with No. 1 mounting grooves at even intervals; a No. 1 elastic member is provided in the No. 1 mounting groove; and the No. 1 elastic member abuts against the mounting seat.

[0022] Preferably, a No. 2 driving seat is symmetrically arranged on the connecting seat; a No. 2 slope structure and a No. 3 slope structure are respectively arranged at both ends of the No. 2 driving seat; a No. 2 plane structure is arranged between the No. 2 slope structure and the No. 3 slope structure; a No. 3 mounting groove is arranged on the No. 3 slope structure; a No. 3 magnet is fixedly connected in the No. 3 mounting groove;

[0023] The No. 2 adjustment mechanism is symmetrically arranged at the front and rear ends of the mounting seat; the No. 2 adjustment mechanism includes a No. 2 pusher and a No. 2 roller; the No. 2 pusher is slidably connected to the mounting seat; one end of the No. 2 pusher is rotatably connected to the No. 2 roller; and the other end of the No. 2 pusher is provided with a No. 2 push part.

[0024] Preferably, the transport component includes a No. 1 sliding seat, a No. 3 rack, a No. 3 motor, a No. 3 gear, a No. 2 sliding seat, a No. 2 threaded barrel, a No. 4 motor, a No. 2 limiter and a No. 2 elastic member;

[0025] The connecting seat is horizontally slidably connected to the No. 1 sliding seat; the No. 3 rack is fixedly connected to the connecting seat; the No. 1 sliding seat is fixedly connected to the No. 3 motor; the No. 3 gear is fixedly connected to the rotating shaft of the No. 3 motor; the No. 3 gear is meshed with the No. 3 rack;

[0026] The No. 1 sliding seat is vertically slidably connected to the No. 2 sliding seat; the No. 2 sliding seat is provided with a No. 2 shaft-shaped structure; the No. 2 shaft-shaped structure is threadedly connected to the No. 2 threaded barrel; the No. 2 threaded barrel is rotatably connected to the No. 1 sliding seat; the No. 4 motor is fixedly connected to the No. 1 sliding seat; the No. 4 motor is used to drive the No. 2 threaded barrel to rotate;

[0027] Both ends of the second sliding seat are symmetrically provided with second connection structures; symmetrically arranged second connection grooves are provided on the second connection structures; the second limiting members are slidably connected in the second connection grooves; one end of the second limiting member is provided with a second spherical structure; the other end of the second limiting member is provided with the second elastic member; one end of the second elastic member abuts against the second limiting member; the other end of the second elastic member abuts against the bottom surface of the second connection groove; a fourth magnet is fixedly connected to the connection seat.

[0028] Second insertion grooves are symmetrically provided on the mounting seat; second grooves are provided on two opposite side walls of the second insertion groove.

[0029] Preferably, the moving member includes a fifth sliding seat, a fifth threaded cylinder, a fifth motor, a sixth sliding seat, a sixth threaded shaft and a sixth motor;

[0030] The fifth sliding seat is vertically slidably connected to the connection seat; a fifth shaft-shaped structure is provided on the fifth sliding seat; the fifth threaded cylinder is threadedly connected to the fifth shaft-shaped structure; the fifth threaded cylinder is rotatably connected to the connection seat; the fifth motor is fixedly connected to the connection seat; the fifth motor is used to drive the fifth threaded cylinder to rotate;

[0031] Both ends of the lower end of the fifth sliding seat are symmetrically provided with fifth connection structures; the lower ends of the fifth connection structures are connected to the pressing plate; the sixth sliding seat is horizontally slidably connected to the fifth sliding seat; the welding member is fixedly connected to the lower end of the sixth sliding seat.

[0032] The sixth threaded shaft is rotatably connected to the fifth sliding seat; the sixth sliding seat is threadedly connected to the sixth threaded shaft; the sixth motor is fixedly connected to the fifth sliding seat; the sixth motor is used to drive the sixth threaded shaft to rotate.

[0033] Preferably, both the first driving seat and the second driving seat are slidably connected to the connection seat; a first threaded shaft and a second threaded shaft are rotatably connected to the connection seat; the first threaded shaft is threadedly connected to the first driving seat; the second threaded shaft is threadedly connected to the second driving seat; the pressing plate is slidably connected to the fifth connection structure; an eighth threaded shaft is rotatably connected to the fifth connection structure; the pressing plate is threadedly connected to the eighth threaded shaft.

[0034] Preferably, the power mechanism includes a second rack, a second connecting shaft, a second gear, a first gear and a first motor;

[0035] The No. 2 rack is fixedly connected to the connecting plate; the No. 2 connecting shaft is spaced apart at one end of the connecting seat; the No. 2 connecting shaft is rotatably connected to the connecting seat; the No. 2 connecting shaft is fixedly connected to the No. 2 gear; the No. 1 motor is fixedly connected to the connecting seat; the No. 1 gear is fixedly connected to the rotating shaft of the No. 1 motor; the No. 2 gear is meshed with the No. 1 gear.

[0036] Preferably, the conveying component drives the sheet metal to move from left to right; the second connecting shaft is arranged at intervals at the right end of the connecting seat.

[0037] Preferably, a fan is also provided at the right end of the connecting seat; and a fixing tube of the fan is fixedly connected to the connecting seat.

[0038] The beneficial effects of the present invention are as follows:

[0039] 1. In the present invention, when the conveying component brings the sheet metal to the station to be adjusted and stops working, the transport component drives the adjustment component on the release station to move, so that the adjustment component moves to the station to be adjusted, so that the adjustment component and the conveying component are connected together, and the conveying component drives the adjustment component and the sheet metal to move to the welding station. The two No. 1 adjustment mechanisms adjust the left and right positions of the two sheet metals so that the symmetric surfaces of the two sheet metals in the left and right directions are on the same plane. The two No. 2 adjustment mechanisms adjust the front and back positions of the two sheet metals so that the welding parts of the two sheet metals are squeezed together. When the conveying component drives the adjustment component and the sheet metal to the welding station and stops working, the moving component drives the welding part and the pressing plate to move downward , so that the two pressing plates are respectively squeezed on the two sheet metal parts to fix the two sheet metal parts, and then the moving parts drive the welding parts to move horizontally, and the welding parts weld the two sheet metal parts to weld the two sheet metal parts together; the adjusting parts automatically adjust the left and right positions and the front and back positions of the two sheet metal parts, and fix the two sheet metal parts through the pressing plates to carry out assembly line operations, thereby increasing the welding speed of the sheet metal parts and improving the welding efficiency; the two No. 2 adjustment mechanisms make the welding parts of the two sheet metal parts collide with each other, reduce the gap between the two sheet metal parts, and improve the welding quality; the pressing plates press and fix the sheet metal parts, so that the two sheet metal parts are in a horizontal state, thereby improving the flatness of the sheet metal parts after welding and improving the welding quality.

[0040] 2. When the connecting plate in the present invention drives the adjustment component and the sheet metal to move toward the welding station, the No. 1 roller abuts against the No. 1 slope structure on the left side of the No. 1 drive seat, so that the No. 1 drive member moves toward the sheet metal, and the two No. 1 push plates at one end of the mounting seat are close to each other, so that the left and right positions of the sheet metal are adjusted; when the No. 1 roller rolls onto the No. 1 plane structure, the side walls of the two No. 1 push plates at one end of the mounting seat respectively abut against the two side walls of a sheet metal, so that the left and right positions of one sheet metal are adjusted; similarly, the side walls of the two No. 1 push plates at the other end of the mounting seat respectively abut against the two side walls of another sheet metal, so that the left and right positions of the other sheet metal are adjusted, so that the left and right positions of the two sheet metal parts are adjusted.

[0041] 3. In the present invention, when the connecting plate drives the adjustment component and the sheet metal to move toward the welding station, the No. 2 roller at one end of the mounting seat rolls along the No. 2 slope structure, so that the No. 2 roller moves toward the sheet metal, driving the No. 2 pushing member at one end of the mounting seat to move toward the sheet metal, so that the No. 2 pushing portion abuts against the sheet metal, and drives the sheet metal to move toward the middle of the mounting seat. When the No. 2 roller abuts against the No. 2 plane structure, the sheet metal stops moving. Similarly, the No. 2 pushing portion at the other end of the mounting seat abuts against the sheet metal at that end, and drives the sheet metal at that end to move toward the middle of the mounting seat. When the two sheet metal parts stop moving, the welding points of the two sheet metal parts abut together, and the welding points are located on the plane formed by the lateral movement of the welding head of the welding part, thereby completing the adjustment of the front and rear positions of the sheet metal parts.

[0042] 4. In the present invention, the position of the No. 1 plane structure is changed, the position of the No. 1 sliding member is changed when the No. 1 roller abuts on the No. 1 plane structure, and the distance between the two No. 1 push plates at one end of the mounting seat is changed, so as to adjust the left and right positions of sheet metal parts of different lengths; the position of the No. 2 plane structure is changed, the position of the No. 2 push member is changed when the No. 2 roller abuts on the No. 2 plane structure, and the front and rear positions of sheet metal parts of different widths are adjusted, so that the welding point of the two sheet metal parts is located on the plane formed by the lateral movement of the welding head of the welding part; the distance between the bottom surface of the pressure plate and the lower end of the welding head structure of the welding part is changed, and the distance between the lower end of the welding head structure and the sheet metal part is adjusted to meet different welding requirements and improve the application range of the welding parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The present invention will be further described below in conjunction with the accompanying drawings.

[0044] Figure 1 It is a schematic diagram of the overall structure of the welding device in the present invention;

[0045] Figure 2 yes Figure 1 A partial enlarged view of the middle A;

[0046] Figure 3 It is a structural schematic diagram of the No. 1 driving seat in the present invention;

[0047] Figure 4 is Figure 3 The partial enlarged view at position B in

[0048] Figure 5 is Figure 3 The partial enlarged view at position C in

[0049] Figure 6 is Figure 3 The partial enlarged view at position D in

[0050] Figure 7 The structural schematic diagram of the welded part in the present invention;

[0051] Figure 8 is Figure 7 The partial enlarged view at position E in

[0052] Fig. 9 is Figure 7 The partial enlarged view at position F in

[0053] Fig.10 is Figure 7 The partial enlarged view at position G in

[0054] Fig.11 The structural schematic diagram of the rotating part in the present invention;

[0055] Fig.12 is Fig.11 The partial enlarged view at position H in

[0056] Fig.13 is Fig.11 The partial enlarged view at position I in

[0057] Fig.14 The structural schematic diagram of the moving part in the present invention;

[0058] Fig.15 is Fig.14 The partial enlarged view at position J in

[0059] Fig.16 The structural schematic diagram of the adjusting part in the present invention;

[0060] Fig.17 The structural schematic diagram of the first sliding part in the present invention;

[0061] Fig.18 The structural schematic diagram of the fifth sliding seat in the present invention;

[0062] In the figure: connecting seat 1, No. 1 driving seat 11, No. 1 slope structure 111, No. 1 plane structure 112, No. 2 driving seat 12, No. 2 slope structure 121, No. 2 plane structure 122, No. 3 slope structure 123, No. 3 magnet 124, No. 4 magnet 13, conveying component 2, rotating member 21, connecting plate 22, plug-in structure 221, No. 1 guide member 23, No. 2 guide member 24, power mechanism 25, No. 2 rack 251, No. 2 connecting shaft 252, No. 2 gear 253, No. 1 gear 254, No. 1 motor 255, adjustment component 3, mounting seat 31, No. 1 slot 311, No. 2 plug-in slot 312, No. 1 adjustment mechanism 32, No. 1 sliding member 321, No. 1 driving member 322, No. 1 mounting slot 3221, No. 1 roller 323, No. 1 push plate 324, No. 1 sliding slot 3241, No. 1 swing Component 325, No. 2 swing component 326, No. 1 hinge shaft 327, No. 1 elastic component 328, No. 2 adjustment mechanism 33, No. 2 pushing component 331, No. 2 pushing part 3311, No. 2 roller 332, welding component 4, pressing plate 5, moving component 6, No. 5 sliding seat 61, No. 5 shaft-like structure 611, No. 5 connecting structure 612, No. 5 threaded cylinder 62, No. 5 motor 63, No. 6 sliding seat 64, No. 6 threaded shaft 65, No. 6 motor 66, conveying component 7, No. 1 sliding seat 71, No. 3 rack 72, No. 3 motor 73, No. 3 gear 74, No. 2 sliding seat 75, No. 2 shaft-like structure 751, No. 2 connecting structure 752, No. 2 threaded cylinder 76, No. 4 motor 77, No. 2 limiting component 78, No. 2 spherical structure 781, No. 2 elastic component 79, No. 1 threaded shaft 81, No. 2 threaded shaft 82, No. 8 threaded shaft 83. DETAILED DESCRIPTION

[0063] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0064] like Figure 1-Figure 18 As shown, a precision laser welding device for automobile sheet metal parts includes a connecting seat 1, a conveying component 2, an adjusting component 3, a welding part 4 and a pressing plate 5;

[0065] The connecting seat 1 is connected to the conveying component 2; the conveying component 2 is provided with two adjusting components 3; the conveying component 2 is used to drive the adjusting component 3 and the sheet metal part to move;

[0066] The adjustment component 3 includes a mounting seat 31, a first adjustment mechanism 32 and a second adjustment mechanism 33; the first adjustment mechanism 32 is symmetrically arranged on the mounting seat 31; the first adjustment mechanism 32 is used to adjust the left and right positions of the sheet metal part; the second adjustment mechanism 33 is symmetrically arranged on the mounting seat 31; the second adjustment mechanism 33 is used to adjust the front and rear positions of the sheet metal part;

[0067] The connecting seat 1 is connected with a moving part 6; the moving part 6 is connected with a welding part 4 and a pressing plate 5; the moving part 6 is used to drive the welding part 4 and the pressing plate 5 to rise or fall; the moving part 6 is used to drive the welding part 4 to move horizontally; the welding part 4 is used to weld the sheet metal parts;

[0068] A transport component 7 is connected to the connecting seat 1 ; the transport component 7 is used to drive the adjusting component 3 to move.

[0069] During operation, the staff uses the controller to make the conveying component 2 work intermittently. When the conveying component 2 stops working, the staff is at the placing station (such as the attached Figure 1As shown in the figure, the left side of the connecting seat 1 is the placing station, the right side is the taking station, the moving component 6 is the welding station, the left side of the welding station is the station to be adjusted, and the right side of the welding station is the releasing station, which will not be described below) Place the two connected sheet metal parts on the conveying component 2, so that the welding points of the two sheet metal parts are close to each other, and the conveying component 2 drives the sheet metal parts to move when it is working. When the conveying component 2 brings the sheet metal parts to the station to be adjusted and stops working, the controller makes the conveying component 7 work, and the conveying component 7 drives the adjustment component 3 on the releasing station to move, so that the adjustment component 3 moves to the station to be adjusted, and the adjustment component 3 is placed On the conveying component 2 (at this time, the No. 1 adjustment mechanism 32 and the No. 2 adjustment mechanism 33 are both in non-working state, and the No. 1 adjustment mechanism 32 and the No. 2 adjustment mechanism 33 do not come into contact with the sheet metal), the adjustment component 3 and the conveying component 2 are connected together, and then the conveying component 2 works again, and the conveying component 2 drives the adjustment component 3 and the sheet metal to move toward the welding station. During the process of the conveying component 2 driving the adjustment component 3 to move, the two No. 1 adjustment mechanisms 32 work first, and the two No. 1 adjustment mechanisms 32 adjust the left and right positions of the two sheet metals so that the symmetrical surfaces of the two sheet metals in the left and right directions are on the same plane, and then The two No. 2 adjustment mechanisms 33 work, and the two No. 2 adjustment mechanisms 33 adjust the front and rear positions of the two sheet metal parts so that the welding points of the two sheet metal parts are squeezed together, and the welding points are located on the plane formed by the lateral movement of the welding head structure of the welding part 4. When the conveying component 2 drives the adjustment component 3 and the sheet metal parts to the welding station and stops working, the moving component 6 drives the welding part 4 and the pressing plate 5 to move downward, so that the two pressing plates 5 are respectively squeezed on the two sheet metal parts to fix the two sheet metal parts. Then the moving component 6 drives the welding part 4 to move horizontally, and the welding part 4 welds the two sheet metal parts, so that the two sheet metal parts are welded. together; after welding is completed, the moving component 6 drives the welding piece 4 and the pressing plate 5 to move upward to the highest position, and the conveying component 2 drives the adjusting component 3 and the sheet metal to move to the release station. During the movement, the No. 1 adjusting mechanism 32 is restored to a non-working state, and the No. 1 adjusting mechanism 32 is separated from the sheet metal, and the No. 2 adjusting mechanism 33 is restored to a non-working state, and the No. 2 adjusting mechanism 33 is separated from the sheet metal, so that the handling component 7 drives the adjusting component 3 to move to the station to be adjusted, and places the adjusting component 3 on the conveying component 2; when the conveying component 2 drives the sheet metal to move to the pickup station, the staff takes the sheet metal away;

[0070] The staff only needs to place the sheet metal parts on the conveying component 2, and the adjustment component 3 will automatically adjust the left and right positions and the front and back positions of the two sheet metal parts, and fix the two sheet metal parts through the pressing plate 5, so as to carry out assembly line operation, increase the welding speed of the sheet metal parts, and improve the welding efficiency; the two No. 2 adjustment mechanisms 33 make the welding points of the two sheet metal parts collide with each other, reduce the gap between the two sheet metal parts, and improve the welding quality; the pressing plate 5 presses and fixes the sheet metal parts, so that the two sheet metal parts are in a horizontal state, improve the flatness of the sheet metal parts after welding, and improve the welding quality; the welding part 4 is a laser welding mechanism, which is not described in detail in this article.

[0071] The conveying component 2 includes a rotating member 21, a connecting plate 22, a first guide member 23, a second guide member 24 and a power mechanism 25;

[0072] Rotating members 21 are symmetrically arranged at both ends of the connecting seat 1; the rotating members 21 are rotatably connected to the connecting seat 1;

[0073] A plurality of connecting plates 22 are adjacent to each other end to form a chain structure; the chain structure is hinged end to end; two adjacent connecting plates 22 are hinged; the chain structure is sleeved on the outside of the two rotating members 21;

[0074] The connecting seat 1 is evenly spaced and provided with No. 1 guide pieces 23; the two ends of the connecting seat 1 are symmetrically provided with No. 2 guide pieces 24; the No. 2 guide piece 24 is arranged directly above the No. 1 guide piece 23; the No. 1 guide piece 23 and the No. 2 guide piece 24 are both rotatably connected to the connecting seat 1; the distance between the axes of two adjacent No. 1 guide pieces 23 is less than half the length of the connecting plate 22;

[0075] The connecting plate 22 is symmetrically provided with a plug-in structure 221; the mounting seat 31 is symmetrically provided with a first slot 311;

[0076] The connecting seat 1 is connected to a power mechanism 25 ; the power mechanism 25 is used to drive the connecting plate 22 to move.

[0077] The connecting plate 22 on the upper part of the chain structure is in contact with the No. 1 guide 23 and the No. 2 guide 24, and the distance between the axes of the two No. 1 guides 23 is less than half of the length of the connecting plate 22 (the distance in the left and right directions of the connecting plate 22 is the length), so that the connecting plate 22 is at least located on the two No. 1 guides 23, so that this part of the connecting plate 22 is in a horizontal state; the power mechanism 25 is made to work intermittently through the controller, and the power mechanism 25 drives the connecting plate 22 to move when working, and the distance moved by the connecting plate 22 each time the power mechanism 25 works is equal to the length of one connecting plate 22; the connecting plate 22 is suspended from moving When moving, the staff places the two sheet metal parts on the corresponding connecting plates 22 at the placing station, so that the bottom surfaces of the two sheet metal parts are in contact with the connecting plates 22, and the welding parts of the two sheet metal parts are close to each other; when the connecting plate 22 brings the sheet metal parts to the station to be adjusted and stops moving, the transport component 7 drives the adjustment component 3 on the release station to move, so that the adjustment component 3 moves to the station to be adjusted, so that the mounting seat 31 is in contact with the corresponding connecting plate 22, and the No. 1 slot 311 is sleeved on the plug-in structure 221, so that the mounting seat 31 and the connecting plate 22 are connected together, so that the mounting seat 31 and the connecting plate 22 move synchronously.

[0078] A No. 1 driving seat 11 is symmetrically arranged on the connecting seat 1; a No. 1 slope structure 111 is symmetrically arranged at both ends of the No. 1 driving seat 11; a No. 1 plane structure 112 is arranged between the two No. 1 slope structures 111;

[0079] The first adjustment mechanism 32 is symmetrically arranged at the front and rear ends of the mounting seat 31 ; the first adjustment mechanism 32 comprises a first sliding member 321 , a first driving member 322 , a first roller 323 and a first pushing plate 324 ;

[0080] A No. 1 sliding member 321 is symmetrically arranged on both sides of one end of the mounting seat 31; the No. 1 sliding member 321 is slidably connected to the mounting seat 31; a No. 1 driving member 322 is arranged on the outer side of the mounting seat 31; the two ends of the No. 1 driving member 322 are respectively fixedly connected to the two No. 1 sliding members 321; the No. 1 driving member 322 is rotatably connected to the No. 1 roller 323;

[0081] A No. 1 push plate 324 is provided on each side of the two No. 1 sliding members 321 close to each other; a No. 1 sliding groove 3241 is provided on the No. 1 push plate 324; the No. 1 push plate 324 and the mounting seat 31 are connected via a No. 1 swing member 325 and a No. 2 swing member 326; the No. 1 swing member 325 and the No. 2 swing member 326 are hinged;

[0082] One end of the first swing member 325 is hinged to the first sliding member 321; the other end of the first swing member 325 is hinged to the first push plate 324; one end of the second swing member 326 is hinged to the mounting seat 31; the other end of the second swing member 326 is rotatably connected to the first hinge shaft 327; the first sliding groove 3241 is slidably connected to the first hinge shaft 327;

[0083] The first driving member 322 is provided with first installation grooves 3221 at even intervals. The first installation grooves 3221 are provided with first elastic members 328 . The first elastic members 328 abut against the installation seat 31 .

[0084] When the transport component 7 places the mounting seat 31 on the connecting plate 22, the No. 1 adjustment mechanism 32 is in a non-working state. At this time, the two No. 1 push plates 324 at one end of the mounting seat 31 do not contact the sheet metal part at this end, and are located on the left and right sides of the sheet metal part at this end. The two No. 1 push plates 324 at the other end of the mounting seat 31 do not contact the sheet metal part at this end, and are located on the left and right sides of the sheet metal part at this end. When the connecting plate 22 drives the adjustment component 3 and the sheet metal part to move to the welding station, the connecting plate 22 drives the mounting seat The first adjusting mechanism 32 moves, driving the first sliding member 321, the first driving member 322 and the first roller 323 at both ends of the mounting seat 31 to move toward the welding station, so that the first roller 323 abuts against the first slope structure 111 on the left side of the first driving seat 11, so that the first roller 323 rolls along the first slope structure 111, so that the first roller 323 moves toward the sheet metal part, so that the first driving member 322 moves toward the sheet metal part, so that the two first sliding members 321, the first driving member 322 and the first roller 323 at one end of the mounting seat 31 are moved toward the welding station. The first sliding member 321 moves toward the middle of the mounting seat 31 at the same time. When the first sliding member 321 moves, it drives the first swinging member 325 to swing, so that the first swinging member 325 and the second swinging member 326 swing at the same time, driving the first push plate 324 to move toward the sheet metal part, so that the two first push plates 324 at one end of the mounting seat 31 are close to each other, and the left and right positions of the sheet metal part are adjusted. When the first roller 323 rolls onto the first planar structure 112, the first driving member 322 and the first sliding member 324 are moved. 21 no longer moves toward the sheet metal part, and the two No. 1 push plates 324 at one end of the mounting seat 31 no longer approach each other. At this time, the side walls of the two No. 1 push plates 324 at one end of the mounting seat 31 respectively abut against the two side walls of one sheet metal part, and the left-right position adjustment of one sheet metal part is completed. Similarly, the side walls of the two No. 1 push plates 324 at the other end of the mounting seat 31 respectively abut against the two side walls of another sheet metal part, and the left-right position adjustment of the other sheet metal part is completed.

[0085] After welding is completed, the connecting plate 22 drives the adjustment component 3 and the sheet metal to move to the release station. During this process, the connecting plate 22 drives the No. 1 roller 323 at both ends of the mounting seat 31 to move along the corresponding No. 1 planar structure 112. When the No. 1 roller 323 moves and disengages from the No. 1 planar structure 112, the elastic force of the No. 1 elastic member 328 causes the No. 1 driving member 322 to move, causing the No. 1 sliding member 321 to move away from the sheet metal, driving the No. 1 swinging member 325 and the No. 2 swinging member 326 to move, causing the two No. 1 push plates 324 at the same end of the mounting seat 31 to move away from each other until the distance between the two No. 1 push plates 324 is maximized, thereby restoring the No. 1 adjustment mechanism 32 to a non-working state.

[0086] A No. 2 driving seat 12 is symmetrically arranged on the connecting seat 1; a No. 2 slope structure 121 and a No. 3 slope structure 123 are respectively arranged at both ends of the No. 2 driving seat 12; a No. 2 plane structure 122 is arranged between the No. 2 slope structure 121 and the No. 3 slope structure 123; a No. 3 mounting groove is arranged on the No. 3 slope structure 123; a No. 3 magnet 124 is fixedly connected in the No. 3 mounting groove;

[0087] The No. 2 adjustment mechanism 33 is symmetrically arranged at the front and rear ends of the mounting seat 31; the No. 2 adjustment mechanism 33 includes a No. 2 pusher 331 and a No. 2 roller 332; the No. 2 pusher 331 is slidably connected to the mounting seat 31; one end of the No. 2 pusher 331 is rotatably connected to the No. 2 roller 332; the other end of the No. 2 pusher is provided with a No. 2 push portion 3311.

[0088] When the transport component 7 places the mounting seat 31 on the connecting plate 22, the No. 2 adjustment mechanism 33 is in a non-working state. At this time, the distance between the two No. 2 pushers 331 at both ends of the mounting seat 31 is the largest, and the two No. 2 pushers 3311 do not contact the two sheet metal parts and are located at the front and rear sides of the two sheet metal parts. When the connecting plate 22 drives the adjustment component 3 and the sheet metal parts to move toward the welding station, the connecting plate 22 drives the mounting seat 31 to move, drives the two No. 2 adjustment mechanisms 33 to move, and drives the No. 2 rollers 332 at both ends of the mounting seat 31 to move, so that the No. 2 rollers 332 are in contact with the No. 2 slope structure 121 (at this time, the No. 1 roller 323 has already been in contact with the No. 1 plane structure 112, and the No. 1 adjustment mechanism 32 has completed the adjustment of the left and right positions of the sheet metal parts). The second roller 332 at one end of the mounting seat 31 rolls along the second ramp structure 121, so that the second roller 332 moves toward the sheet metal part, driving the second pusher 331 at one end of the mounting seat 31 to move toward the sheet metal part, so that the second pusher 3311 abuts against the sheet metal part, and drives the sheet metal part to move toward the middle of the mounting seat 31. When the second roller 332 abuts against the second plane structure 122, the sheet metal part stops moving. Similarly, the second pusher 3311 at the other end of the mounting seat 31 abuts against the sheet metal part at that end, and drives the sheet metal part at that end to move toward the middle of the mounting seat 31. When the two sheet metal parts stop moving, the welding parts of the two sheet metal parts abut together, and the welding parts are located on the plane formed by the lateral movement of the welding head of the welding part 4, thereby completing the adjustment of the front and rear positions of the sheet metal parts.

[0089] After welding is completed, the connecting plate 22 drives the adjustment component 3 and the sheet metal to move to the release station, and drives the No. 2 roller 332 at both ends of the mounting seat 31 to continue rolling along the No. 2 plane structure 122. When the No. 2 roller 332 rolls to the No. 3 slope structure 123, the No. 3 magnet 124 generates suction on the No. 2 roller 332, causing the No. 2 roller 332 to roll along the No. 3 slope structure 123, causing the No. 2 roller 332 to move toward the side away from the sheet metal, causing the No. 2 pusher 331 to move toward the side away from the sheet metal, causing the No. 2 pusher 331 to detach from the sheet metal, until the distance between the two No. 2 pushers 331 is maximized, causing the No. 2 adjustment mechanism 33 to return to a non-working state.

[0090] The transport component 7 includes a No. 1 sliding seat 71, a No. 3 rack 72, a No. 3 motor 73, a No. 3 gear 74, a No. 2 sliding seat 75, a No. 2 threaded cylinder 76, a No. 4 motor 77, a No. 2 limiter 78 and a No. 2 elastic member 79;

[0091] The connecting seat 1 is horizontally slidably connected to the first sliding seat 71; the connecting seat 1 is fixedly connected to the third rack 72; the first sliding seat 71 is fixedly connected to the third motor 73; the rotating shaft of the third motor 73 is fixedly connected to the third gear 74; the third gear 74 is meshed with the third rack 72;

[0092] The first sliding seat 71 is vertically slidably connected to the second sliding seat 75; the second sliding seat 75 is provided with a second shaft-shaped structure 751; the second shaft-shaped structure 751 is threadedly connected to the second threaded barrel 76; the second threaded barrel 76 is rotatably connected to the first sliding seat 71; the first sliding seat 71 is fixedly connected to the fourth motor 77; the fourth motor 77 is used to drive the second threaded barrel 76 to rotate;

[0093] The two ends of the No. 2 sliding seat 75 are symmetrically provided with No. 2 connecting structures 752; the No. 2 connecting structures 752 are symmetrically provided with No. 2 connecting grooves; the No. 2 limiting member 78 is slidably connected in the No. 2 connecting groove; the No. 2 limiting member 78 is provided with a No. 2 spherical structure 781 at one end; the No. 2 elastic member 79 is provided at the other end of the No. 2 limiting member 78; one end of the No. 2 elastic member 79 abuts against the No. 2 limiting member 78; the other end of the No. 2 elastic member 79 abuts against the bottom surface of the No. 2 connecting groove; the No. 4 magnet 13 is fixedly connected to the connecting seat 1;

[0094] A second plugging slot 312 is symmetrically provided on the mounting seat 31 ; and two opposite side walls of the second plugging slot 312 are provided with a second groove.

[0095] When the connecting plate 22 stops moving, the controller makes the No. 4 motor 77 work, and the No. 4 motor 77 drives the No. 2 threaded cylinder 76 to rotate, drives the No. 2 shaft structure 751 to move downward, drives the No. 2 sliding seat 75 to move downward, drives the No. 2 connecting structure 752 to move downward, so that the No. 2 connecting structure 752 is inserted into the No. 2 plug-in slot 312. When the No. 2 spherical structure 781 abuts against the opening of the No. 2 plug-in slot 312, the No. 2 connecting structure 752 continues to move downward. At this time, the side wall of the opening of the No. 2 plug-in slot 312 generates a force on the No. 2 spherical structure 781, resisting the elastic force of the No. 2 elastic member 79, so that the No. 2 limit member 78 moves toward the No. 2 connecting slot When the second sliding seat 75 moves to the lowest position, the second connecting structure 752 moves to the lowest position, and the second spherical structure 781 is opposite to the second groove. At this time, under the action of the elastic force of the second elastic member 79, the second limiting member 78 moves to one side of the second groove, so that the second spherical structure 781 abuts against the second groove, so that the mounting seat 31 and the second connecting structure 752 form a fixed connection. Then the fourth motor 77 rotates in the opposite direction, driving the second threaded cylinder 76 to rotate in the opposite direction, driving the second sliding seat 75 to move upward, driving the mounting seat 31 to move upward, driving the adjustment component 3 to move upward, and the second sliding seat 75 moves upward. After the movable seat 75 moves to the highest position, the fourth motor 77 stops working, and then the third motor 73 starts working, driving the third gear 74 to rotate, so that the third gear 74 rolls on the third rack 72, driving the first sliding seat 71 to move, driving the first sliding seat 71, the second sliding seat 75, the mounting seat 31 and the adjustment component 3 to move to the top of the position to be adjusted at the same time, when the first sliding seat 71 moves to the top of the position to be adjusted, the third motor 73 stops working, and then the fourth motor 77 starts working again, so that the second sliding seat 75 and the mounting seat 31 move downward, so that the second sliding seat 75 and the mounting seat 31 move to the lowest position, so that the mounting seat 31 abuts against the corresponding On the connecting plate 22, the No. 1 slot 311 is sleeved on the outside of the plug-in structure 221, and then the No. 2 sliding seat 75 is moved upward. At this time, the No. 3 magnet 13 generates suction on the mounting seat 31, hindering the mounting seat 31 from moving upward, resisting the elastic force of the No. 2 elastic member 79, so that the No. 2 spherical structure 781 is disengaged from the No. 2 groove, and the No. 2 connecting structure 752 is disengaged from the No. 2 plug-in slot 312, so that the No. 2 connecting structure 752 moves upward, and at the same time, the mounting seat 31 remains on the connecting plate 22, completing the transportation work of the adjustment component 3; after the No. 2 sliding seat 75 moves to the highest position, the No. 1 sliding seat 71 is moved to the top of the release station for easy use next time.

[0096] The moving part 6 includes a No. 5 sliding seat 61, a No. 5 threaded barrel 62, a No. 5 motor 63, a No. 6 sliding seat 64, a No. 6 threaded shaft 65 and a No. 6 motor 66;

[0097] The connecting seat 1 is vertically slidably connected to the No. 5 sliding seat 61; the No. 5 sliding seat 61 is provided with a No. 5 shaft-shaped structure 611; the No. 5 shaft-shaped structure 611 is threadedly connected to the No. 5 threaded barrel 62; the No. 5 threaded barrel 62 is rotatably connected to the connecting seat 1; the No. 5 motor 63 is fixedly connected to the connecting seat 1; the No. 5 motor 63 is used to drive the No. 5 threaded barrel 62 to rotate;

[0098] A No. 5 connecting structure 612 is symmetrically arranged at the lower end of the No. 5 sliding seat 61; the lower end of the No. 5 connecting structure 612 is connected to the pressing plate 5; the No. 5 sliding seat 61 is horizontally slidably connected to the No. 6 sliding seat 64; the lower end of the No. 6 sliding seat 64 is fixedly connected to the welding piece 4;

[0099] The No. 5 sliding seat 61 is rotatably connected to the No. 6 threaded shaft 65; the No. 6 sliding seat 64 is threadedly connected to the No. 6 threaded shaft 65; the No. 6 motor 66 is fixedly connected to the No. 5 sliding seat 61; the No. 6 motor 66 is used to drive the No. 6 threaded shaft 65 to rotate.

[0100] During welding, the controller makes the No. 5 motor 63 work, the No. 5 motor 63 drives the No. 5 threaded cylinder 62 to rotate, drives the No. 5 sliding seat 61 to move downward, drives the welding part 4 and the pressing plate 5 to move downward, and after the pressing plate 5 is squeezed on the sheet metal, the No. 5 motor 63 stops working, and then the No. 6 motor 66 works, the No. 6 motor 66 drives the No. 6 threaded shaft 65 to rotate, drives the No. 6 sliding seat 64 to move horizontally, drives the welding part 4 to move horizontally, and at the same time the welding part 4 works to weld the welding points of the two sheet metal parts and weld the two sheet metal parts together; after welding is completed, the No. 5 motor 63 rotates in the opposite direction, drives the No. 5 sliding seat 61 to move upward, moves the No. 5 sliding seat 61 to the highest position, and moves the welding part 4 and the pressing plate 5 to the highest position, so as to facilitate the adjustment of the component 3 and the sheet metal part to move to the welding station.

[0101] The No. 1 driving seat 11 and the No. 2 driving seat 12 are both slidably connected to the connecting seat 1; the No. 1 threaded shaft 81 and the No. 2 threaded shaft 82 are rotatably connected to the connecting seat 1; the No. 1 threaded shaft 81 is threadedly connected to the No. 1 driving seat 11; the No. 2 threaded shaft 82 is threadedly connected to the No. 2 driving seat 12; the pressure plate 5 is slidably connected to the No. 5 connecting structure 612; the No. 8 threaded shaft 83 is rotatably connected to the No. 5 connecting structure 612; the pressure plate 5 is threadedly connected to the No. 8 threaded shaft 83.

[0102] By rotating the No. 1 threaded shaft 81 to drive the No. 1 driving seat 11 to move, the position of the No. 1 planar structure 112 is changed, the position of the No. 1 sliding member 321 is changed when the No. 1 roller 323 is against the No. 1 planar structure 112, the swing angles of the No. 1 swing member 325 and the No. 2 swing member 326 are changed, the position of the No. 1 push plate 324 is changed, and the distance between the two No. 1 push plates 324 at one end of the mounting seat 31 is changed, and the left and right positions of sheet metal parts of different lengths (the distance in the left and right direction is the length, and the distance in the front and rear direction is the width) are adjusted (the two No. 1 adjustment mechanisms 32 can also adjust the left and right positions of two sheet metal parts of different lengths at the same time), thereby improving the application range of the No. 1 adjustment mechanism 32;

[0103] By rotating the No. 2 threaded shaft 82 to drive the No. 2 driving seat 12 to move, the position of the No. 2 planar structure 122 is changed, and the position of the No. 2 pusher 331 when the No. 2 roller 332 is against the No. 2 planar structure 122 is changed, and the front and rear positions of sheet metal parts with different widths are adjusted (the two No. 2 adjustment mechanisms 33 can also adjust the front and rear positions of two sheet metal parts with different widths), so that the welding point of the two sheet metal parts is located on the plane formed by the lateral movement of the welding head of the welding part 4, thereby improving the application range of the No. 2 adjustment mechanism 33;

[0104] By rotating the No. 8 threaded shaft 83 to drive the pressing plate 5 to move, the distance between the bottom surface of the pressing plate 5 and the lower end of the welding head structure of the welding part 4 is changed, and the distance between the lower end of the welding head structure and the sheet metal part is adjusted to meet different welding requirements and improve the application range of the welding parts.

[0105] The power mechanism 25 includes a second rack 251, a second connecting shaft 252, a second gear 253, a first gear 254 and a first motor 255;

[0106] A No. 2 rack 251 is fixedly connected to the connecting plate 22; a No. 2 connecting shaft 252 is spaced apart at one end of the connecting seat 1; the No. 2 connecting shaft 252 is rotatably connected to the connecting seat 1; a No. 2 gear 253 is fixedly connected to the No. 2 connecting shaft 252; a No. 1 motor 255 is fixedly connected to the connecting seat 1; a No. 1 gear 254 is fixedly connected to the rotating shaft of the No. 1 motor 255; the No. 2 gear 253 is meshed with the No. 1 gear 254.

[0107] When the conveying component 2 needs to work, the controller is used to operate the No. 1 motor 255, and the No. 1 motor 255 drives the No. 1 gear 254 to rotate, drives the two No. 2 gears 253 to rotate, drives the No. 2 rack 251 above the No. 2 gear 253 to move (the No. 2 rack 251 on the connecting plate 22 above the No. 2 gear 253 is meshed with the No. 2 gear 253), drives the connecting plate 22 above the No. 2 gear 253 to move, and drives all the connecting plates 22 to move; there are two No. 2 gears 253, and the No. 2 rack 251 above the two No. 2 gears 253 can at least mesh with one No. 2 gear 253, thereby improving the reliability of the transmission between the No. 2 gear 253 and the No. 2 rack 251, and improving the reliability of the conveying component 2.

[0108] The conveying component 2 drives the sheet metal part to move from left to right; a second connecting shaft 252 is arranged at intervals at the right end of the connecting seat 1.

[0109] The No. 2 connecting shaft 252 is located at the right end of the connecting seat 1. At this time, the No. 2 rack 251 meshing with the No. 2 gear 253 is located between the No. 1 guide member 23 and the No. 2 guide member 24. The connecting plate 22 corresponding to the No. 2 rack 251 is located between the No. 1 guide member 23 and the No. 2 guide member 24, so that the connecting plate 22 is always in a horizontal state. When the No. 2 gear 253 rotates, the connecting plate 22 is prevented from arching, ensuring the degree of engagement between the No. 2 rack 251 and the No. 2 gear 253, improving the reliability of the transmission of the No. 2 gear 253 and the No. 2 rack 251, and improving the reliability of the conveying component 2; the No. 2 connecting shaft 252 is located at the right end of the connecting seat 1. When the connecting plate 22 above the No. 2 connecting shaft 252 moves, a pulling force is generated on the connecting plate 22 on the left, driving the connecting plate 22 on the left to move, so that the connecting plate 22 above the No. 1 guide member 23 is always in a horizontal state, thereby improving the reliability of the conveying component 2.

[0110] A fan is also provided at the right end of the connecting seat 1 ; a fixing tube of the fan is fixedly connected to the connecting seat 1 .

[0111] The fan (the fan is a conventional axial flow fan, and this article does not make specific requirements) blows air to the sheet metal parts to accelerate the flow of air around the welds of the sheet metal parts and dissipate the heat of the sheet metal parts.

[0112] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation modes, which are merely illustrative rather than restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the present invention and the claims, all of which are within the protection of the present invention.

Claims

1. A precision laser welding device for automobile sheet metal parts, characterized in that: It comprises a connecting seat (1), a conveying component (2), an adjusting component (3), a welding component (4) and a pressing plate (5); The connecting seat (1) is connected to the conveying component (2); the conveying component (2) is provided with two adjusting components (3); the conveying component (2) is used to drive the adjusting component (3) and the sheet metal part to move; The adjustment component (3) comprises a mounting seat (31), a first adjustment mechanism (32) and a second adjustment mechanism (33); the first adjustment mechanism (32) is symmetrically arranged on the mounting seat (31); the first adjustment mechanism (32) is used to adjust the left and right positions of the sheet metal part; the second adjustment mechanism (33) is symmetrically arranged on the mounting seat (31); the second adjustment mechanism (33) is used to adjust the front and rear positions of the sheet metal part; The connecting seat (1) is connected to a moving component (6); the moving component (6) is connected to the welding component (4) and the pressing plate (5); the moving component (6) is used to drive the welding component (4) and the pressing plate (5) to rise or fall; the moving component (6) is used to drive the welding component (4) to move horizontally; the welding component (4) is used to weld the sheet metal component; The connecting seat (1) is connected to a transport component (7); the transport component (7) is used to drive the adjustment component (3) to move.

2. The precision laser welding device for automobile sheet metal parts according to claim 1, characterized in that: The conveying component (2) comprises a rotating member (21), a connecting plate (22), a first guide member (23), a second guide member (24) and a power mechanism (25); The rotating members (21) are symmetrically arranged at both ends of the connecting seat (1); the rotating members (21) are rotatably connected to the connecting seat (1); A plurality of the connecting plates (22) are adjacent end to end to form a chain structure; the chain structure is hinged end to end; two adjacent connecting plates (22) are hinged; the chain structure is sleeved on the outside of the two rotating members (21); The first guide members (23) are evenly spaced on the connecting seat (1); the second guide members (24) are symmetrically arranged at both ends of the connecting seat (1); the second guide member (24) is arranged directly above the first guide member (23); the first guide member (23) and the second guide member (24) are both rotatably connected to the connecting seat (1); and the distance between the axes of two adjacent first guide members (23) is less than half the length of the connecting plate (22); The connecting plate (22) is symmetrically provided with a plug-in structure (221); the mounting seat (31) is symmetrically provided with a No. 1 slot (311); The connecting seat (1) is connected to the power mechanism (25); the power mechanism (25) is used to drive the connecting plate (22) to move.

3. The precision laser welding device for automobile sheet metal parts according to claim 2, characterized in that: A No. 1 driving seat (11) is symmetrically arranged on the connecting seat (1); a No. 1 slope structure (111) is symmetrically arranged at both ends of the No. 1 driving seat (11); and a No. 1 plane structure (112) is arranged between the two No. 1 slope structures (111); The first adjustment mechanism (32) is symmetrically arranged at the front and rear ends of the mounting seat (31); the first adjustment mechanism (32) comprises a first sliding member (321), a first driving member (322), a first roller (323) and a first pushing plate (324); The No. 1 sliding member (321) is symmetrically arranged on both sides of one end of the mounting seat (31); the No. 1 sliding member (321) is slidably connected to the mounting seat (31); the No. 1 driving member (322) is arranged on the outer side of the mounting seat (31); the two ends of the No. 1 driving member (322) are respectively fixedly connected to the two No. 1 sliding members (321); the No. 1 driving member (322) is rotatably connected to the No. 1 roller (323); The first push plate (324) is disposed on the side where the two first sliding members (321) are close to each other; the first push plate (324) is provided with a first sliding groove (3241); the first push plate (324) and the mounting seat (31) are connected via a first swing member (325) and a second swing member (326); the first swing member (325) and the second swing member (326) are hinged; One end of the No. 1 swing member (325) is hinged to the No. 1 sliding member (321); the other end of the No. 1 swing member (325) is hinged to the No. 1 push plate (324); one end of the No. 2 swing member (326) is hinged to the mounting seat (31); the other end of the No. 2 swing member (326) is rotatably connected to the No. 1 hinge shaft (327); the No. 1 sliding groove (3241) is slidably connected to the No. 1 hinge shaft (327); The No. 1 driving member (322) is evenly spaced with No. 1 mounting grooves (3221); a No. 1 elastic member (328) is disposed in the No. 1 mounting groove (3221); and the No. 1 elastic member (328) abuts against the mounting seat (31).

4. The precision laser welding device for automobile sheet metal parts according to claim 3 is characterized in that: A No. 2 driving seat (12) is symmetrically arranged on the connecting seat (1); a No. 2 slope structure (121) and a No. 3 slope structure (123) are respectively arranged at two ends of the No. 2 driving seat (12); a No. 2 plane structure (122) is arranged between the No. 2 slope structure (121) and the No. 3 slope structure (123); a No. 3 mounting groove is arranged on the No. 3 slope structure (123); a No. 3 magnet (124) is fixedly connected in the No. 3 mounting groove; The second adjustment mechanism (33) is symmetrically arranged at the front and rear ends of the mounting seat (31); the second adjustment mechanism (33) comprises a second pushing member (331) and a second roller (332); the mounting seat (31) is slidably connected to the second pushing member (331); one end of the second pushing member (331) is rotatably connected to the second roller (332); and the other end of the second pushing member is provided with a second pushing portion (3311).

5. The precision laser welding device for automobile sheet metal parts according to claim 4, characterized in that: The transport component (7) comprises a No. 1 sliding seat (71), a No. 3 rack (72), a No. 3 motor (73), a No. 3 gear (74), a No. 2 sliding seat (75), a No. 2 threaded cylinder (76), a No. 4 motor (77), a No. 2 limiter (78) and a No. 2 elastic member (79); The connecting seat (1) is horizontally slidably connected to the first sliding seat (71); the connecting seat (1) is fixedly connected to the third rack (72); the first sliding seat (71) is fixedly connected to the third motor (73); the rotating shaft of the third motor (73) is fixedly connected to the third gear (74); the third gear (74) is meshed with the third rack (72); The No. 1 sliding seat (71) is vertically slidably connected to the No. 2 sliding seat (75); the No. 2 sliding seat (75) is provided with a No. 2 shaft-shaped structure (751); the No. 2 shaft-shaped structure (751) is threadedly connected to the No. 2 threaded barrel (76); the No. 2 threaded barrel (76) is rotatably connected to the No. 1 sliding seat (71); the No. 4 motor (77) is fixedly connected to the No. 1 sliding seat (71); the No. 4 motor (77) is used to drive the No. 2 threaded barrel (76) to rotate; A No. 2 connecting structure (752) is symmetrically provided at both ends of the No. 2 sliding seat (75); a No. 2 connecting groove is symmetrically provided on the No. 2 connecting structure (752); the No. 2 limiting member (78) is slidably connected in the No. 2 connecting groove; a No. 2 spherical structure (781) is provided at one end of the No. 2 limiting member (78); the No. 2 elastic member (79) is provided at the other end of the No. 2 limiting member (78); one end of the No. 2 elastic member (79) abuts against the No. 2 limiting member (78); the other end of the No. 2 elastic member (79) abuts against the bottom surface of the No. 2 connecting groove; a No. 4 magnet (13) is fixedly connected to the connecting seat (1); A second plugging slot (312) is symmetrically provided on the mounting seat (31); and a second groove is provided on two opposite side walls of the second plugging slot (312).

6. The precision laser welding device for automobile sheet metal parts according to claim 5, characterized in that: The moving component (6) comprises a No. 5 sliding seat (61), a No. 5 threaded cylinder (62), a No. 5 motor (63), a No. 6 sliding seat (64), a No. 6 threaded shaft (65) and a No. 6 motor (66); The connecting seat (1) is vertically slidably connected to the No. 5 sliding seat (61); the No. 5 sliding seat (61) is provided with a No. 5 shaft-shaped structure (611); the No. 5 shaft-shaped structure (611) is threadedly connected to the No. 5 threaded barrel (62); the No. 5 threaded barrel (62) is rotatably connected to the connecting seat (1); the No. 5 motor (63) is fixedly connected to the connecting seat (1); the No. 5 motor (63) is used to drive the No. 5 threaded barrel (62) to rotate; A No. 5 connecting structure (612) is symmetrically provided at the lower end of the No. 5 sliding seat (61); the lower end of the No. 5 connecting structure (612) is connected to the pressing plate (5); the No. 6 sliding seat (64) is horizontally slidably connected to the No. 5 sliding seat (61); the lower end of the No. 6 sliding seat (64) is fixedly connected to the welding piece (4); The No. 6 threaded shaft (65) is rotatably connected to the No. 5 sliding seat (61); the No. 6 sliding seat (64) is threadedly connected to the No. 6 threaded shaft (65); the No. 6 motor (66) is fixedly connected to the No. 5 sliding seat (61); the No. 6 motor (66) is used to drive the No. 6 threaded shaft (65) to rotate.

7. The precision laser welding device for automobile sheet metal parts according to claim 6, characterized in that: The No. 1 drive seat (11) and the No. 2 drive seat (12) are both slidably connected to the connecting seat (1); a No. 1 threaded shaft (81) and a No. 2 threaded shaft (82) are rotatably connected to the connecting seat (1); the No. 1 threaded shaft (81) is threadedly connected to the No. 1 drive seat (11); the No. 2 threaded shaft (82) is threadedly connected to the No. 2 drive seat (12); the pressing plate (5) is slidably connected to the No. 5 connecting structure (612); a No. 8 threaded shaft (83) is rotatably connected to the No. 5 connecting structure (612); the pressing plate (5) is threadedly connected to the No. 8 threaded shaft (83).

8. The precision laser welding device for automobile sheet metal parts according to claim 7, characterized in that: The power mechanism (25) comprises a second rack (251), a second connecting shaft (252), a second gear (253), a first gear (254) and a first motor (255); The connecting plate (22) is fixedly connected to the second rack (251); the second connecting shaft (252) is spaced apart at one end of the connecting seat (1); the second connecting shaft (252) is rotatably connected to the connecting seat (1); the second connecting shaft (252) is fixedly connected to the second gear (253); the connecting seat (1) is fixedly connected to the first motor (255); the first gear (254) is fixedly connected to the rotating shaft of the first motor (255); the second gear (253) is meshed with the first gear (254).

9. The precision laser welding device for automobile sheet metal parts according to claim 8, characterized in that: The conveying component (2) drives the sheet metal part to move from left to right; the second connecting shaft (252) is arranged at intervals at the right end of the connecting seat (1).

10. The precision laser welding device for automobile sheet metal parts according to claim 9, characterized in that: A fan is also provided at the right end of the connection seat (1); a fixing tube of the fan is fixedly connected to the connection seat (1).

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