A laser welding equipment for automobile coated plates

Abstract

The present invention relates to the technical field of automobile coating plate processing, specifically to an automobile coating plate laser welding device, including a conveying assembly, a welding mechanism, a guiding unit and a clamping unit. In the present invention, through the cooperation between the guiding rod and the corresponding guiding groove, the two suction cups corresponding to the connecting seat and a suction cup on the same side V-shaped seat form a three-point triangular suction clamping. Through the multiple triangular frames formed above, the stability of the coating plate when moving and the stability of the welding surface docking process of the two coating plates are improved. Secondly, the above process cooperates with the subsequent cooperation between the plug-in column and the corresponding plug-in groove to complete the multi-point guiding process, and jointly guide the corresponding two coating plates to approach and fit each other closely, ensuring that the two coating plates are closely aligned and improving the overall welding quality.

Description

Technical Field

[0001] The invention relates to the technical field of automobile coating plate processing, in particular to automobile coating plate laser welding equipment. Background Art

[0002] Automotive coated plates, also known as color-coated plates or pre-coated steel plates, are an indispensable part of modern automobile manufacturing. They not only provide the body with a beautiful appearance, but also largely determine the durability and corrosion resistance of the vehicle. Automotive coated plates are generally produced and formed by laser welding during the manufacturing process, that is, a high-energy-density laser beam is used as a heat source to heat the surfaces of two or more metal plates of different materials, thicknesses or coatings, and finally the coated plates are welded together to form a composite structure that meets specific performance requirements.

[0003] Currently, when performing laser welding of coated plates, the corresponding coated plates are first sucked by multiple suction cups, and the welding end faces of the corresponding two coated plates are aligned and pressed together to form multiple groups of welding work stations. Then the laser welding head moves to the designated welding station to weld the two coated plates at the station. After completion, it moves to the next welding station for welding. The above process is repeated to complete the welding operation of all coated plates in this batch.

[0004] However, the above welding process has the following problems: in the current operation process, the limiting guidance during the movement of the two coated plates is insufficient, which may cause the two coated plates to be not accurately aligned and the adhesion between them to be poor, thereby affecting the overall strength of the subsequent welding connection between the two. Secondly, in the process of sucking the coated plate by the suction cup to drive the coated plate to move, the stability of the docking process of the two coated plates may be affected by the weight of the coated plate or the vibration generated during the operation. Summary of the invention

[0005] Based on this, it is necessary to provide a laser welding device for automotive coated plates, aiming to solve the above-mentioned problems of the prior art.

[0006] The present application provides a laser welding device for automotive coated plates, comprising: two groups of conveying components arranged symmetrically front and back, the conveying components comprising rollers for moving the coated plates and two frames distributed front and back, the two conveying components are jointly provided with a plurality of welding mechanisms arranged equidistantly from left to right, each welding mechanism is a welding station for welding the coated plates opposite to each other front and back, a plurality of base bars arranged from left to right are jointly fixedly provided between the two corresponding frames, the corresponding plurality of base bars jointly constitute a welding platform in the welding station, a transverse seat is jointly fixedly provided between the two conveying components, the lower end surface of the transverse seat is provided with a welding assembly which slides left and right through an electric slider, and the welding assembly comprises an existing laser welding head.

[0007] The welding mechanism includes an L-shaped frame, and the opposite back surfaces of the two conveying components are fixedly provided with an L-shaped frame, a sliding block is provided on the L-shaped frame to slide up and down, a moving rod is installed on the sliding block to slide forward and backward and penetrate, and connecting seats are fixedly provided on the opposite surfaces of the two moving rods opposite to each other, and a V-shaped seat is fixedly provided on the end surface of the connecting seat facing the horizontal seat, and hard pipes are fixedly provided in the top corner area of ​​the lower end surface of the V-shaped seat and in the left and right side areas of the lower end surface of the connecting seat, and a suction cup is fixedly provided at the lower end of the pipe, and a three-point suction clamping of the coated plate is formed by the two suction cups on the connecting seat and one suction cup on the V-shaped seat.

[0008] A guiding unit is provided between the front and rear connecting seats facing each other to guide the coating plate against the guide unit. The guiding unit includes two guiding rods and two guiding blocks. The guiding blocks are provided with guiding grooves that cooperate with the corresponding guiding rods. The guiding rods and the guiding blocks cooperate with each other to make the front and rear connecting seats in the same welding mechanism become one, and cooperate with each other in the downward pressing operation to improve the stability of the coating plate during welding.

[0009] The clamping unit comprises two cavity seats distributed on the left and right sides of the L-shaped frame facing the transverse seat, and the opposite surfaces of the left and right cavity seats are provided with a plurality of matrix-arranged clamping tentacles. The clamping tentacles on the cavity seats are used to clamp the coating plate, which is suitable for the clamping process of coating plates of different shapes.

[0010] According to a favorable embodiment, the axis of the guide rod extends from front to rear, and is fixedly arranged on the upper end surface of the corresponding connecting seat through a mounting block, the guide block is fixedly arranged on the upper end surface of the V-shaped seat, the two guide rods in the same welding mechanism are staggered up and down, the guide rod passes through adjacent guide blocks and cooperates with the guide groove on the other guide block, the upper end surface of the transverse seat is fixedly provided with a fixing plate corresponding to the welding mechanism one by one, and the fixing plate is penetrated by two transition grooves distributed up and down and having a diameter larger than the diameter of the guide rod, and the transition grooves cooperate with the corresponding two guide rods.

[0011] According to an advantageous embodiment, the fixing sleeve on the guide rod is provided with a matching sleeve, and the diameter of the matching sleeve is the same as the diameter of the transition groove.

[0012] According to a favorable embodiment, the clamping unit also includes a horizontal frame, and the left and right end surfaces of the L-shaped frame are fixedly provided with horizontal frames, and a moving block is provided on the horizontal frame to slide left and right, and a connecting rod is installed on the moving block to slide back and forth and penetrate the moving block, and the cavity seat is fixed on the connecting rod, and the tightening tentacle slides left and right and is installed on the cavity seat through the cavity seat, and the end of the tightening tentacle away from the cavity seat is made of rubber.

[0013] According to a favorable embodiment, the clamping unit further comprises an adjusting cylinder, the upper end surface of the cavity seat is fixedly provided with a plurality of adjusting cylinders whose inner cylinder areas are connected with its inner cavity, the adjusting cylinder is provided with an adjusting column which slides up and down, and an adjusting plate is fixedly provided on the upper end surfaces of all the adjusting columns.

[0014] According to a favorable embodiment, the guide unit further comprises a docking strip, the lower end surface of the transverse seat is fixedly provided with a docking strip corresponding to the cavity seat one by one, a docking groove is penetrated through the docking strip, and a docking column corresponding to the docking groove is fixedly provided on the cavity seat.

[0015] According to a favorable embodiment, the guide unit also includes an L-shaped block, and the back surfaces of the two opposite cavity seats on the left and right are fixedly provided with L-shaped blocks, and the horizontal section of the L-shaped block is penetrated by a plug-in groove, and the left and right end surfaces of the connecting seat 202 are fixedly provided with mounting strips, and the lower end surface of the mounting strip is fixedly provided with a plug-in column that cooperates with the corresponding plug-in groove.

[0016] According to a favorable embodiment, the clamping unit also includes a wedge block, and the back surfaces of the two L-shaped blocks opposite to each other on the left and right are fixedly provided with wedge blocks, the two wedge blocks corresponding to the same connecting seat are symmetrical to each other on the left and right, and the inclined surface of the wedge block on the left side of the same clamping unit is inclined upward from left to right, and a sliding rod is penetrated through the mounting bar and slidably installed up and down, and a matching block matching with the inclined surface of the wedge block is fixedly provided on the lower end surface of the sliding rod, and a spring is fixedly provided between the matching block and the mounting bar.

[0017] According to a favorable embodiment, the clamping unit further comprises a snap-in groove, the inclined surface of the wedge block is provided with a snap-in groove extending along the inclined surface direction thereof, a snap-in block is fixedly provided on the lower end surface of the mating block, and the snap-in block is inserted into the snap-in groove so that the cavity seat and the connecting seat move forward and backward synchronously.

[0018] According to an advantageous embodiment, a second spring sleeved on the connecting rod is fixedly arranged between the cavity seat and the moving block, and a third spring used for the moving block resetting process is fixedly arranged between the moving block and the horizontal frame.

[0019] In summary, the present invention includes at least one of the following beneficial effects: First, in the present invention, through the cooperation between the guide rod and the corresponding guide groove, the two suction cups corresponding to the connecting seat and a suction cup on the V-shaped seat on the same side form a three-point triangular suction clamping. Through the multiple triangular frames formed above, the stability of the coating plate when moving and the stability of the welding surface docking process of the two coating plates are improved. Secondly, the above process cooperates with the subsequent cooperation between the plug-in column and the corresponding plug-in groove to complete multiple guiding processes, and jointly guide the corresponding two coating plates to approach and fit closely to each other, ensuring that the two coating plates are closely aligned and the overall welding quality is improved.

[0020] 2. In the present invention, the cooperation between the guide rod and the guide groove, and the cooperation between the matching sleeve and the filter groove, jointly form two plug-in guide cooperations, thereby improving the stability during the docking process of the front and rear connecting seats, and avoiding the problem of affecting the docking accuracy and stability due to the long front and rear moving distance.

[0021] 3. In the present invention, the two corresponding front and rear connecting seats, two V-shaped seats, two guide rods and fixed plates together form a plurality of stable rectangular frames to improve the stability during welding. When the two coated plates are in close contact, the two left and right cavity seats, L-shaped blocks, mounting strips, connecting seats and two suction cups on the connecting seats together form a plurality of stable rectangular frames to ensure the accuracy of the direction of subsequent movement of the coated plates and the stability of the movement process.

[0022] Fourth, in the present invention, all the abutting tentacles on the same cavity seat jointly form a fitting surface with the same shape as the side surface of the corresponding coating plate. The above method is convenient for welding coating plates of different shapes or irregular shapes, thereby improving the applicability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0024] Figure 1 A schematic diagram of the three-dimensional structure of a laser welding device for a coated automobile plate provided according to an embodiment of the present invention is shown.

[0025] Figure 2 A partial structural stereoscopic diagram of an automobile coating plate laser welding device provided according to an embodiment of the present invention is shown.

[0026] Figure 3 A top view of a partial structure of a laser welding device for an automobile coating plate provided according to an embodiment of the present invention is shown.

[0027] Figure 4 A schematic diagram of a partial cross-sectional three-dimensional structure between a cavity seat, an L-shaped frame and a horizontal frame provided according to an embodiment of the present invention is shown.

[0028] Figure 5 A partial exploded schematic diagram of the L-shaped block, the wedge-shaped block and the connecting seat provided according to an embodiment of the present invention is shown.

[0029] Figure 6 The embodiment of the present invention provides Figure 5 Enlarged view of point A in the middle.

[0030] The above drawings include the following reference numerals: 1. conveying assembly; 10. frame; 11. base bar; 2. welding mechanism; 20. L-shaped frame; 200. sliding block; 201. moving rod; 202. connecting seat; 203. V-shaped seat; 204. pipeline; 205. suction cup; 3. transverse seat; 30. laser welding head; 4. guide unit; 40. guide rod; 41. guide block; 410. guide groove; 42. fixing plate; 420. transition groove; 43. matching sleeve; 44. docking strip ; 440, docking groove; 441, docking column; 45, L-shaped block; 450, plug-in groove; 451, mounting strip; 452, plug-in column; 5, clamping unit; 50, cavity seat; 51, pressing tentacle; 52, horizontal frame; 520, moving block; 521, connecting rod; 53, adjusting cylinder; 530, adjusting plate; 54, wedge block; 540, sliding rod; 541, matching block; 542, spring one; 55, snap-in groove; 550, snap-in block; 56, spring two; 57, spring three. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0032] like Figure 1 As shown, a laser welding device for automobile coated plates comprises: two groups of conveying components 1 arranged symmetrically front and back, the conveying components 1 comprise rollers for moving the coated plates and two frames 10 distributed front and back, the two conveying components 1 are commonly provided with a plurality of welding mechanisms 2 arranged equidistantly from left to right, each welding mechanism 2 is a welding station for welding the coated plates opposite to each other front and back, a plurality of base bars 11 arranged from left to right are commonly fixedly provided between the two corresponding frames 10, and the corresponding plurality of base bars 11 jointly constitute a welding platform in the welding station, a transverse seat 3 is commonly fixedly provided between the two conveying components 1, and a welding assembly is provided on the lower end surface of the transverse seat 3 which slides left and right through an electric slider, and the welding assembly comprises an existing laser welding head 30.

[0033] like Figure 1 and Figure 2As shown, the welding mechanism 2 includes an L-shaped frame 20, and the opposite back surfaces of the two conveying assemblies 1 are fixedly provided with the L-shaped frame 20, and a sliding block 200 is provided on the L-shaped frame 20 to slide up and down, and a moving rod 201 is installed on the sliding block 200 to slide forward and backward and penetrate it, and an external hydraulic cylinder 1 drives the sliding block 200 to move up and down, and an external hydraulic cylinder 2 drives the moving rod 201 to move forward and backward, and the opposite surfaces of the two moving rods 201 opposite to each other are fixedly provided with a connecting seat 202, and the end surface of the connecting seat 202 facing the horizontal seat 3 is fixedly provided with a V-shaped seat 203, and the top corner area of ​​the lower end surface of the V-shaped seat 203 and the left and right side areas of the lower end surface of the connecting seat 202 are fixedly provided with a hard pipe 204, and a suction cup 205 is fixedly provided at the lower end of the pipe 204, and a three-point adsorption clamping of the coated plate is formed by two suction cups 205 on the connecting seat 202 and one suction cup 205 on the V-shaped seat 203.

[0034] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, a guide unit 4 for guiding the coating plate to be pressed is commonly provided between the front and rear connecting seats 202 facing each other, and the guide unit 4 includes two guide rods 40 and two guide blocks 41, and the guide blocks 41 are provided with guide grooves 410 cooperating with the corresponding guide rods 40. The guide rods 40 and the guide blocks 41 cooperate with each other so that the front and rear connecting seats 202 in the same welding mechanism 2 become one, and cooperate with each other to perform the downward pressing operation, thereby improving the stability of the coating plate during welding.

[0035] like Figure 2 , Figure 3 and Figure 4 As shown, the end face of the L-shaped frame 20 facing the transverse seat 3 is provided with two cavity seats 50 distributed on the left and right, and the opposite surfaces of the left and right opposite cavity seats 50 are provided with multiple matrix-arranged clamping tentacles 51. The clamping tentacles 51 on the cavity seats 50 are used to clamp the coating plate, which is suitable for the clamping process of coating plates of different shapes.

[0036] During operation, the clamping unit 5 is adjusted to hold the clamping tentacles 51 on the cavity seats 50 in the clamping unit 5, so that the clamping unit 5 is suitable for the clamping requirements of the same batch of coated plates, that is, after the same L-shaped frame 20 completes the clamping of the coated plates, the coated plates are located at the specified position, and then the conveying component 1 works to transfer the coated plates that need to be welded to the corresponding welding stations, and the external hydraulic cylinders 1 and 2 work to make the connecting seat 202 approach the corresponding coated plates first and then move down, during which the clamping unit 5 works, and the left and right cavity seats 50 therein approach each other, and the holding tentacles 51 thereon press against the coated plates to complete the clamping in the left and right directions, and as the suction cups 205 continues to move downward and press the coating plate to complete the adsorption and clamping of the coating plate. Then, as the connecting seat 202 continues to approach the transverse seat 3, the welding surfaces of the two coating plates facing each other are finally close to each other. In this process, the guide rod 40 and the guide groove 410 in the guide unit 4 cooperate with each other to improve the accuracy and stability of the coating plate docking. Finally, the electric slider drives the laser welding head 30 in the welding assembly to move right to complete the laser welding of the coating plates of multiple welding stations. All structures are reset and the conveying assembly 1 resumes operation. The welded coating plates are moved out of the equipment, and another batch of coating plates are moved to each welding station.

[0037] like Figure 2 , Figure 3 and Figure 5 As shown, the axis of the guide rod 40 extends from front to back, and it is fixedly arranged on the upper end surface of the corresponding connecting seat 202 through a mounting block, and the guide block 41 is fixedly arranged on the upper end surface of the V-shaped seat 203. The two guide rods 40 in the same welding mechanism 2 are staggered up and down, and the guide rod 40 passes through the adjacent guide blocks 41 and cooperates with the guide groove 410 on the other guide block 41. The upper end surface of the transverse seat 3 is fixedly provided with a fixing plate 42 corresponding to the welding mechanism 2 one by one, and the fixing plate 42 is penetrated by two transition grooves 420 distributed up and down and having a diameter larger than the diameter of the guide rod 40, and the transition grooves 420 correspond to the two corresponding guide rods 40.

[0038] like Figure 2 , Figure 3 and Figure 5 As shown, the fixing sleeve on the guide rod 40 is provided with a matching sleeve 43 , and the diameter of the matching sleeve 43 is the same as the diameter of the transition groove 420 .

[0039] During operation, after the clamping unit 5 completes the clamping and fixing of the coating plate and the suction cups 205 move down to suck the coating plate, the external hydraulic cylinder 2 continues to work to drive the connecting seat 202 and the coating plate to continue to move forward through the moving rod 201, and the guide rod 40 on the connecting seat 202 first passes through the corresponding transition groove 420, and then as the two connecting seats 202 opposite to each other continue to approach, the two guide rods 40 in the same welding mechanism 2 gradually pass through the corresponding guide groove 410, and through the above method, the two suction cups 205 on the connecting seat 202 and the suction cup 205 on the opposite V-shaped seat 203 form a triangular frame, and secondly, the two corresponding suction cups 205 of the connecting seat 202 and a suction cup 205 on the same side V-shaped seat 203 jointly form a three-point triangular adsorption clamping, in summary, when the same welding mechanism 2 is welding, the multiple triangular frames formed as above are used to improve the stability of the coating plate when moving and the stability of the welding surface connection process of the two coating plates.

[0040] As the two corresponding connecting seats 202 continue to approach each other, the guide rod 40 drives the corresponding matching sleeve 43 to be inserted into the transition groove 420. The two cooperate with each other, that is, through the cooperation between the matching sleeve 43 and the transition groove 420, and the cooperation between the guide rod 40 and the guide groove 410, the stability of the front and rear connecting seats 202 during docking is improved, avoiding the problem of affecting the docking accuracy and stability due to the long front and rear moving distance.

[0041] When the guide rod 40 is inserted into the corresponding guide groove 410, the two corresponding front and rear connecting seats 202, the two V-shaped seats 203, the two guide rods 40 and the fixing plate 42 together form a plurality of stable rectangular frames to improve the stability during welding.

[0042] Finally, as the connecting seat 202 continues to move, the welding surfaces of the two coated plates are closely attached, and then the electric slider drives the laser welding head thereon to move right, and during the right movement, the closely attached areas of the two coated plates are laser welded.

[0043] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the clamping unit 5 also includes a horizontal frame 52, and the horizontal frames 52 are fixedly arranged on both left and right end surfaces of the L-shaped frame 20. A moving block 520 is slidably arranged on the horizontal frame 52, and a connecting rod 521 is installed on the moving block 520 to slide forward and backward and penetrate the moving block 520. The cavity seat 50 is fixedly arranged on the connecting rod 521, and the pressing tentacle 51 slides left and right and is installed on the cavity seat 50 through the end, and the pressing tentacle 51 away from the cavity seat 50 is made of rubber.

[0044] like Figure 1 and Figure 4As shown, the clamping unit 5 also includes an adjusting cylinder 53, and a plurality of adjusting cylinders 53 connected to the inner cavity of the cavity seat 50 are fixedly arranged on the upper end surface thereof, and an adjusting column sliding up and down is arranged on the adjusting cylinder 53, and an adjusting plate 530 is fixedly arranged on the upper end surfaces of all the adjusting columns, and an external hydraulic cylinder three (not shown in the figure) is fixedly arranged between the adjusting plate 530 and the cavity seat 50.

[0045] It should be noted that before welding the coated plates of the same batch, two coated plates to be welded are taken out, and the extension distance of the abutting tentacles 51 is adjusted according to the two coated plates. The specific adjustment process is: first, the two corresponding coated plates to be welded are placed on the corresponding welding stations, and then the two corresponding cavity seats 50 on the left and right are brought close to each other through the operation of the clamping unit 5. When the cavity seats 50 are moved to a point where they cannot move, the two cavity seats 50 on different conveying components 1 that are opposite to each other are aligned front to back. At the same time, in the above process, the three adaptive belts of the external hydraulic cylinder The movable adjustment plate 530 and the adjustment column move upward, and the pressing tentacles 51 shrink adaptively according to the surface shape of the coating plate pressed against. The contraction of the pressing tentacles 51 causes the internal gas of the cavity seat 50 to push upward the corresponding adjustment column. When the pressing tentacles 51 are pressed against the coating plate, the telescopic end of the external hydraulic cylinder 3 is controlled to maintain the telescopic length unchanged, so that the internal pressure of the cavity seat 50 remains unchanged, so that all the pressing tentacles 51 on the cavity seat 50 form a fitting surface with the same shape as the side of the corresponding coating plate. The above method is convenient for welding coating plates of different shapes or irregular shapes. It should be noted that in order to ensure the stability of the position of the pressing tentacles 51 during the clamping process, the outer wall of the pressing tentacles 51 and the outer wall of the adjustment column are both provided with sealing rings. Of course, other existing sealing methods can also be used for sealing.

[0046] like Figure 1 and Figure 4 As shown, the guide unit 4 also includes a docking strip 44, and the lower end surface of the transverse seat 3 is fixedly provided with a docking strip 44 corresponding to the cavity seat 50, and a docking groove 440 is opened through the docking strip 44, and a docking column 441 corresponding to the docking groove 440 is fixedly provided on the cavity seat 50.

[0047] like Figure 1 , Figure 3 , Figure 5 and Figure 6 As shown, the guide unit 4 also includes an L-shaped block 45, and the opposite back surfaces of the two left and right opposite cavity seats 50 are fixedly provided with L-shaped blocks 45, and the horizontal section of the L-shaped block 45 is penetrated by a plug-in groove 450, and the left and right end surfaces of the connecting seat 202 are fixedly provided with mounting strips 451, and the lower end surface of the mounting strip 451 is fixedly provided with a plug-in column 452 that cooperates with the corresponding plug-in groove 450.

[0048] like Figure 1 , Figure 5 and Figure 6 As shown, the clamping unit 5 also includes a wedge block 54. The back surfaces of the two L-shaped blocks 45 opposite to each other are fixedly provided with wedge blocks 54. The two wedge blocks 54 corresponding to the same connecting seat 202 are symmetrical with each other. The inclined surface of the wedge block 54 on the left side of the same clamping unit 5 is inclined upward from left to right. A sliding rod 540 is installed on the mounting bar 451 so as to slide up and down. A matching block 541 matching with the inclined surface of the wedge block 54 is fixedly provided on the lower end surface of the sliding rod 540. A spring 542 is fixedly provided between the matching block 541 and the mounting bar 451.

[0049] like Figure 1 , Figure 5 and Figure 6 As shown, the clamping unit 5 also includes a snap-in groove 55, the inclined surface of the wedge block 54 is provided with a snap-in groove 55 extending along the inclined surface direction thereof, and the lower end surface of the matching block 541 is fixedly provided with a snap-in block 550, and the snap-in block 550 is inserted into the snap-in groove 55 so that the cavity seat 50 and the connecting seat 202 move forward and backward synchronously.

[0050] During operation, first, the external hydraulic cylinder 1 works to move the connection seat 202 downward, so that the connection seat 202 drives the matching block 541 and the clamping block 550 thereon to move downward synchronously through the mounting strip 451, so that the clamping block 550 moves downward and snaps into the corresponding clamping groove 55, so that the subsequent connection seat 202 drives the corresponding two cavity seats 50 to move forward and backward synchronously, and then the external hydraulic cylinder 2 works, so that the connection seat 202 drives the suction cup 205, the mounting strip 451 and the cavity seat 50 thereon to move forward and backward synchronously, so that the suction cup 205 is located above the coating plate and the corresponding The two cavity seats 50 are located on the left and right sides of the coating plate, and then the connecting seat 202 continuously drives the mounting strip 451 to move downward, so that the spring 1 542 is compressed. The elastic force generated by the compression of the spring 1 542 causes the wedge block 54 to drive the corresponding L-shaped block 45 and the cavity seat 50 to move synchronously, that is, the two cavity seats 50 opposite to each other on the left and right are close to each other, and the coating plate is clamped and locked on the left and right. It should be noted that, through the adjustment process before the operation, the welding surfaces of the two coating plates opposite to each other are parallel to each other through the clamping action of the two cavity seats 50.

[0051] Afterwards, as the connecting seat 202 continues to move downward, the suction cup 205 on the connecting seat 202 and the suction cup 205 on the V-shaped seat 203 are both close to the coating plate, and the external air pump works to make the suction cup 205 adsorbed on the coating plate, completing the adsorption and clamping of the coating plate, and at the same time, the mounting strip 451 drives the plug-in column 452 thereon to insert into the corresponding plug-in groove 450, so that the left and right cavity seats 50, the L-shaped block 45, the mounting strip 451, the connecting seat 202 and the two suction cups 205 on the connecting seat 202 together form a plurality of stable rectangular frames to ensure the stability of the subsequent movement process.

[0052] Afterwards, the connecting seat 202 drives the cavity seat 50, the suction cup 205 and the coating plate to move synchronously, so that the corresponding two coating plates are close to each other. During this process, the docking column 441 on the cavity seat 50 is inserted into the corresponding docking groove 440, so that the front and rear connecting seat 202, the cavity seat 50 and the middle transverse seat 3 relative to each other jointly form a plurality of rectangular frames, which guide the movement and close contact process of the two coating plates and improve the stability during the process, thereby ensuring that the welding surfaces of the last two coating plates can be close together. Finally, with the continuous movement of the connecting seat 202, the welding surfaces of the two coating plates are close together.

[0053] like Figure 2 and Figure 4 As shown, a second spring 56 sleeved on a connecting rod 521 is fixedly arranged between the cavity seat 50 and the moving block 520 , and a third spring 57 used for the resetting process of the moving block 520 is fixedly arranged between the moving block 520 and the horizontal frame 52 .

[0054] During the movement of the connecting seat 202, both the spring 2 56 and the spring 3 57 are stretched, and the elastic forces generated by the stretching of the spring 2 56 and the spring 3 57 respectively drive the cavity seat 50 to reset, so as to facilitate subsequent clamping.

[0055] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0056] In addition, the terms "first", "second", "number one", "number two" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "number one", "number two" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0057] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A laser welding device for automotive coated plates, characterized in that: include: Two groups of conveying assemblies arranged symmetrically front and back, the conveying assemblies include rollers for moving the coated plate and two frames arranged front and back, the two conveying assemblies are commonly provided with a plurality of welding mechanisms arranged equidistantly from left to right, a plurality of base bars arranged from left to right are commonly fixedly provided between the two corresponding frames, a welding assembly is commonly fixedly provided between the two conveying assemblies, and the welding assembly includes a laser welding head; The welding mechanism comprises an L-shaped frame, and the opposite back surfaces of the two conveying assemblies are fixedly provided with an L-shaped frame, a sliding block is provided on the L-shaped frame to slide up and down, a moving rod is installed on the sliding block to slide forward and backward and penetrate, and a connecting seat is fixedly provided on the opposite surfaces of the two moving rods facing each other, and a V-shaped seat is fixedly provided on the end surface of the connecting seat facing the transverse seat, and hard pipes are fixedly provided in the top corner area of ​​the lower end surface of the V-shaped seat and the left and right side areas of the lower end surface of the connecting seat, and a suction cup is fixedly provided at the lower end of the pipe; A guide unit is provided between the front and rear connecting seats, and the guide unit is used to press the guide coating plate tightly. The guide unit includes two guide rods and two guide blocks, and the guide blocks are provided with guide grooves that match the corresponding guide rods. The clamping unit, the end surface of the L-shaped frame facing the transverse seat is provided with two cavity seats distributed on the left and right, and the opposite surfaces of the left and right opposite cavity seats are both provided with a plurality of matrix-arranged tightening tentacles; The axis of the guide rod extends from front to back, and is fixedly arranged on the upper end surface of the corresponding connecting seat through a mounting block. The guide block is fixedly arranged on the upper end surface of the V-shaped seat. The two guide rods in the same welding mechanism are staggered up and down. The guide rod passes through adjacent guide blocks and cooperates with the guide groove on the other guide block. The upper end surface of the transverse seat is fixedly provided with a fixing plate corresponding to the welding mechanism one by one. The fixing plate is penetrated by two transition grooves distributed up and down and having a diameter larger than the diameter of the guide rod, and the transition grooves cooperate with the corresponding two guide rods.

2. The automotive coated plate laser welding equipment according to claim 1, characterized in that: The fixing sleeve on the guide rod is provided with a matching sleeve, and the diameter of the matching sleeve is the same as the diameter of the transition groove.

3. The automotive coated plate laser welding equipment according to claim 1, characterized in that: The clamping unit also includes a horizontal frame, and the left and right end surfaces of the L-shaped frame are fixedly provided with horizontal frames, and a moving block is provided on the horizontal frame to slide left and right, and a connecting rod is installed on the moving block to slide back and forth and penetrate the moving block, and the cavity seat is fixed on the connecting rod, and the tightening tentacle slides left and right and is installed on the cavity seat through, and the end of the tightening tentacle away from the cavity seat is made of rubber.

4. The automotive coated plate laser welding equipment according to claim 1, characterized in that: The clamping unit also includes an adjustment cylinder, the upper end surface of the cavity seat is fixedly provided with a plurality of adjustment cylinders whose inner cylinder areas are connected with its inner cavity, the adjustment cylinder is provided with an adjustment column that slides up and down, and the upper end surfaces of all the adjustment columns are fixedly provided with an adjustment plate.

5. The automotive coated plate laser welding equipment according to claim 1, characterized in that: The guide unit also includes a docking strip, the lower end surface of the transverse seat is fixedly provided with a docking strip corresponding to the cavity seat one by one, a docking groove is penetrated through the docking strip, and a docking column corresponding to the docking groove is fixedly provided on the cavity seat.

6. The automotive coated plate laser welding equipment according to claim 1, characterized in that: The guide unit also includes an L-shaped block, and the opposite back surfaces of the two cavity seats on the left and right are fixedly provided with L-shaped blocks, and the horizontal section of the L-shaped block is penetrated by a plug-in groove. The left and right end surfaces of the connecting seat are fixedly provided with mounting strips, and the lower end surface of the mounting strip is fixedly provided with a plug-in column that cooperates with the corresponding plug-in groove.

7. The automotive coated plate laser welding equipment according to claim 6, characterized in that: The clamping unit also includes a wedge block, and the back surfaces of the two L-shaped blocks opposite to each other on the left and right are fixedly provided with wedge blocks, and the two wedge blocks corresponding to the same connecting seat are symmetrical to each other on the left and right. The inclined surface of the wedge block on the left side of the same clamping unit is inclined upward from left to right, and a sliding rod is penetrated through the mounting bar and slidably installed up and down, and a matching block matching with the inclined surface of the wedge block is fixedly provided on the lower end surface of the sliding rod, and a spring 1 is fixedly provided between the matching block and the mounting bar.

8. The automotive coated plate laser welding equipment according to claim 7, characterized in that: The clamping unit also includes a snap-in groove, the inclined surface of the wedge block is provided with a snap-in groove extending along the inclined surface direction, the lower end surface of the matching block is fixedly provided with a snap-in block, and the snap-in block is inserted into the snap-in groove so that the cavity seat and the connecting seat move forward and backward synchronously.

9. The automotive coated plate laser welding equipment according to claim 4, characterized in that: A second spring sleeved on the connecting rod is fixedly arranged between the cavity seat and the moving block, and a third spring used for the moving block resetting process is fixedly arranged between the moving block and the horizontal frame.

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