Automatic welding device for automobile parts

Abstract

The invention relates to the field of welding processing technology, and in particular to an automatic welding device for automobile parts; comprising an equipment frame; a bottom plate is installed on the equipment frame, two groups of docking mechanisms are symmetrically arranged on the bottom plate, and a driving mechanism for driving the two groups of docking mechanisms is arranged in the middle of the upper end surface of the bottom plate; the invention clamps and fixes the muffler by two front and rear opposite No. 1 arc plates of the same group, clamps and fixes the exhaust pipe by two front and rear opposite No. 2 arc plates of the same group, and then moves the left and right exhaust pipes to achieve simultaneous docking with the corresponding mufflers, and then simultaneously welds the two docked exhaust pipes by a welding mechanism, thereby ensuring that the docking accuracy, docking tightness and welding accuracy between the two exhaust pipes and the corresponding mufflers are consistent, thereby ensuring the sealing and silencing effect of the exhaust pipe and the muffler after welding.

Description

Technical Field

[0001] The present invention relates to the technical field of welding processing, and particularly relates to an automatic welding device for automobile parts. Background Art

[0002] The automobile exhaust pipe is one of the common parts in an automobile. The exhaust pipe is a pipe system used to guide and discharge the exhaust gas discharged from the engine; a muffler is connected to the automobile exhaust pipes by welding to reduce the noise generated by the engine exhaust and improve driving comfort. In the existing welding process of the exhaust pipe and the muffler, usually, one exhaust pipe and the muffler are butted in sequence first, then the exhaust pipe and the muffler are fixed, and then the butted part is welded. After one exhaust pipe is welded, the above operations are repeated to butt and weld the exhaust pipe on the other side of the muffler.

[0003] However, the following problems exist in the existing welding process of the exhaust pipe and the muffler: The two exhaust pipes on the muffler are butted and fixed, and welded in sequence. It is easy to have deviations in the welding precision between the two exhaust pipes and the muffler, resulting in misalignment or unevenness in welding, which in turn affects the sealing performance and muffling effect of the welded exhaust pipe and muffler; Secondly, during the welding process, the exhaust pipe and the muffler need to be flipped to weld the covered part to ensure that the weld seam is completely welded. However, during the flipping process, the welding is interrupted first, and then continued after flipping. In this way, the overall welding time is increased, and the temperature of the welding joint will decrease during the interruption of welding. When restarting welding, the welding joint needs to be heated again, which increases the risk of uneven heating of the welding joint and resulting in welding defects. Summary of the Invention

[0004] In view of the above problems, the embodiments of the present invention provide an automatic welding device for automobile parts to solve the above-mentioned technical problems.

[0005] To achieve the above object, the embodiments of the present invention provide the following technical solutions: The embodiments of the present invention provide an automatic welding device for automobile parts, including an equipment frame; a bottom plate is installed on the equipment frame, and two groups of butting mechanisms are symmetrically arranged front and back on the bottom plate. A driving mechanism for driving the two groups of butting mechanisms is arranged in the middle of the upper end surface of the bottom plate. Two U-shaped plates are symmetrically installed on the left and right of the upper end surface of the bottom plate, and a supporting plate is jointly installed on the upper end surfaces of the U-shaped plates. A welding mechanism for simultaneously welding multiple seams is arranged on the supporting plate.

[0006] As a preferred embodiment, the docking mechanism includes two bases and two rectangular plates. The two bases are symmetrically slidably installed on the lower end surface of the base plate front and back, and the base is an inverted T-shaped structure. Two No. 1 support plates are symmetrically installed on the base for rotation left and right. The two rectangular plates are symmetrically installed on the base for rotation left and right, and the two bases are located between the two rectangular plates. Two sliders are symmetrically installed on the upper end surface of the rectangular plate for rotation left and right. Two No. 2 support plates are symmetrically installed on the sliders for rotation left and right. Arc grooves are provided on the No. 1 support plate and the No. 2 support plate. A No. 1 semi-arc plate for extruding and fixing the muffler is slidably installed in the arc groove of the No. 1 support plate, and a No. 2 semi-arc plate for extruding and fixing the exhaust pipe is slidably installed in the arc groove of the No. 2 support plate.

[0007] As a preferred solution, the base plate is provided with a rotating part for driving the clamped exhaust pipe and muffler to rotate synchronously; a No. 1 linkage part is provided between the two bases, a No. 2 linkage part is provided on the rectangular plate for driving the corresponding two sliders to move toward each other, and a push-pull part is provided on the base plate for driving the two rectangular plates opposite to each other to move toward each other.

[0008] As a preferred solution, the two No. 1 support plates in the same group and away from the driving mechanism are rotatably connected with the vertical sections of the corresponding base through the No. 1 spline sleeve, the No. 1 semi-arc plate and the No. 2 semi-arc plate have the same outer diameter but different inner diameters, and the two No. 2 support plates on the same rectangular plate and away from the driving mechanism are rotatably connected with the corresponding sliders through the No. 2 spline sleeve, the No. 1 spline sleeve and the corresponding No. 1 support plate, as well as the No. 2 spline sleeve and the corresponding No. 2 support plate are unidirectionally rotatably matched through a ratchet and pawl mechanism, and a deflection member for driving the No. 1 support plate and the No. 2 support plate to rotate is provided on the bottom plate.

[0009] As a preferred embodiment, the driving mechanism includes a limit plate, and two limit plates are symmetrically and slidably installed on the upper end surface of the base, and a No. 1 pushing block is installed on the front and rear end surfaces of the limit plates, and support plates are installed on the opposite surfaces of the two limit plates in a staggered manner, and a No. 2 pushing block is installed on the opposite back surfaces of the two support plates, and the No. 1 pushing block and the No. 2 pushing block are both isosceles trapezoidal structures, and the opposite surfaces of the two sliding blocks close to the corresponding No. 1 pushing block are installed with a No. 1 abutment plate that contacts the corresponding No. 1 pushing block, and the opposite surfaces of the two bases close to the corresponding No. 2 pushing block are installed with a No. 2 abutment plate that contacts the corresponding No. 2 pushing block, and a driving member for driving the two support plates to move toward each other is provided on the support plate.

[0010] As a preferred solution, the No. 1 linkage part includes a No. 1 guide column, and two No. 1 guide columns are symmetrically installed on the lower end surface of the base. No. 1 waist grooves are provided at positions corresponding to the No. 1 guide columns on the bottom plate. After the two No. 1 guide columns on the same base slide through the corresponding No. 1 waist grooves, a No. 1 connecting plate is jointly installed. A compression spring is installed between the two No. 1 connecting plates in the same group. A driving plate located between the two No. 1 connecting plates in the same group is rotatably installed on the bottom plate. Waist grooves are provided at both ends of the driving plate, and a roller that slides through the corresponding waist groove is installed on the lower end surface of the No. 1 connecting plate.

[0011] As a preferred solution, the No. 1 linkage part includes a No. 1 spur gear, and the middle part of the rectangular plate is rotatably installed with the No. 1 spur gear through a torsion spring rod. The left and right sides of the No. 1 spur gear are meshed with No. 1 racks, and the two No. 1 racks on the same rectangular plate are respectively fixedly connected to the corresponding two sliders.

[0012] As a preferred solution, the push-pull part includes a No. 2 guide column, and two No. 2 guide columns are symmetrically installed on the front and rear of the lower end face of the rectangular plate. No. 2 waist grooves are opened at positions corresponding to the No. 2 guide columns on the bottom plate. After the two No. 2 guide columns on the same rectangular plate slide through the corresponding No. 2 waist grooves, a No. 2 connecting plate is installed together. A bidirectional screw is rotatably installed on the lower end face of the bottom plate through a bearing plate. The two threaded sections of the bidirectional screw are threadedly connected with a screw block that slides with the bottom plate, and the screw block is fixedly connected to the corresponding two No. 2 connecting plates opposite to each other in the front and rear.

[0013] As a preferred embodiment, the rotating part includes a spline shaft, and a spline shaft is slidably installed in the No. 1 spline sleeve and the No. 2 spline sleeve of the same group and away from the driving mechanism. Bearing seats are rotatably installed at both ends of the spline shaft, and the bearing seats are slidably connected to the base plate front and back. Stepper motors are installed on the opposite back sides of the two bases away from the corresponding support plates through motor seats. The stepper motors are transmission-connected to the corresponding spline shafts through a pulley mechanism. The outer walls of the No. 1 semi-arc plate and the No. 2 semi-arc plate are both provided with teeth, and gear rings meshing with the corresponding teeth are installed on the No. 1 spline sleeve and the No. 2 spline sleeve.

[0014] As a preferred embodiment, the driving member includes a servo motor, and the servo motor is installed on the upper end surface of the support plate. The output shaft of the servo motor rotates through the support plate and is then installed with a No. 2 spur gear. The No. 2 spur gear is meshed with No. 2 racks on both the front and rear sides, and the two No. 2 racks are respectively fixedly connected to the corresponding support plates.

[0015] As a preferred embodiment, the deflection member includes a No. 1 pillar, and the left and right end faces of the rectangular plate are both equipped with No. 1 pillars. A through groove is provided between the two No. 2 waist grooves in the same group, and the lower end of the No. 1 pillar slides through the through groove. The left and right sides of one of the bases in the same group are symmetrically provided with No. 2 pillars connected to the bottom plate for upward and downward sliding. Push-pull plates are installed on the upper end faces of the No. 1 pillar and the No. 2 pillars, and No. 3 waist grooves are provided at the front and rear ends of the push-pull plates. The No. 1 support plate and the No. 2 support plate are both equipped with columns that slide through the corresponding No. 3 waist grooves. A telescopic cylinder is installed on the lower end face of the bottom plate, and an I-shaped plate is installed on the telescopic end of the telescopic cylinder. The lower end of the No. 1 pillar is slidably connected to the I-shaped plate, and the lower end of the No. 2 pillar is fixedly connected to the I-shaped plate.

[0016] As a preferred embodiment, the welding mechanism includes an electric telescopic rod, which is installed on the supporting plate. The telescopic part of the electric telescopic rod is installed with a fixed plate, and the fixed plate is an H-shaped structure. The four ends of the fixed plate are installed with welding components.

[0017] The above one or more technical schemes in the embodiments of the present invention have at least one of the following technical effects: 1. The present invention clamps and fixes the muffler by two No. 1 arc plates opposite to each other in the same group, and clamps and fixes the exhaust pipe by two No. 2 arc plates opposite to each other in the same group, and then moves the left and right exhaust pipes to simultaneously dock with the corresponding mufflers, and then simultaneously welds the two docked exhaust pipes through a welding mechanism, thereby ensuring the docking accuracy, docking tightness and welding accuracy between the two exhaust pipes and the corresponding mufflers, thereby ensuring the sealing and silencing effect of the exhaust pipe and muffler after welding.

[0018] 2. The spline shaft provided in the present invention drives the gear ring to rotate, and the gear ring drives the No. 1 arc plate and the No. 2 arc plate to drive the muffler and the exhaust pipe after docking to rotate synchronously. During the rotation process, the welding mechanism welds the connection between the exhaust pipe and the muffler to avoid welding interruption, thereby improving the welding efficiency and welding uniformity, and further improving the quality of the welding between the exhaust pipe and the muffler.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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.

[0021] Figure 1 This is a schematic structural diagram when the welding muffler and the exhaust pipe of the present invention are welded.

[0022] Figure 2 It is Figure 1 a schematic structural diagram of the second perspective.

[0023] Figure 3 It is Figure 2 an enlarged structural diagram of part A in

[0024] Figure 4 This is a schematic partial structural diagram of the deflecting member of the present invention.

[0025] Figure 5 It is Figure 1 a schematic structural diagram after hiding the equipment rack.

[0026] Figure 6 It is Figure 5 a schematic structural diagram of the second perspective after intercepting part of the I-shaped plate.

[0027] Figure 7 This is a schematic structural diagram between the first support plate and the first spline sleeve of the present invention.

[0028] Figure 8 This is a schematic structural diagram between the first semi-circular arc plate and the tooth ring of the present invention.

[0029] Fig. 9 This is a schematic structural diagram between the second semi-circular arc plate and the tooth ring of the present invention.

[0030] Reference numerals: 10, equipment rack; 11, base plate; 12, U-shaped plate; 13, supporting plate; 2, docking mechanism; 20, base; 21, first support plate; 210, first spline sleeve; 22, rectangular plate; 23, slider; 24, second support plate; 240, second spline sleeve; 25, first semi-circular arc plate; 26, second semi-circular arc plate; 27, deflecting member; 270, first support column; 271, second support column; 272, push-pull plate; 273, column body; 274, telescopic cylinder; 275, I-shaped plate; 4, first linkage part; 40, first waist slot; 41, first connecting plate; 42, compression spring; 43, driving plate; 5, second linkage part; 50, first spur gear; 51, first rack; 6, push-pull part; 60, second waist slot; 61, second connecting plate; 62, bidirectional screw; 63, screw block; 7, rotating part; 70, spline shaft; 71, bearing seat; 72, teeth; 73, tooth ring; 3, driving mechanism; 30, limiting plate; 31, first pushing block; 32, supporting plate; 33, second pushing block; 34, first abutting plate; 35, second abutting plate; 36, driving member; 360, servo motor; 361, second spur gear; 362, second rack; 8, welding mechanism; 80, electric telescopic rod; 81, fixing plate; 82, welding assembly. Detailed Embodiments

[0031] To make the above objects, features, and advantages of the present invention more apparent and understandable, the following detailed description of the specific embodiments of the present invention will be given in conjunction with the accompanying drawings. Many specific details are set forth in the following description 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 departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0032] As shown in FIG. 1, an automatic welding device for automotive parts includes an equipment frame 10; a bottom plate 11 is installed on the equipment frame 10, and two sets of docking mechanisms 2 are symmetrically arranged front and rear on the bottom plate 11. A driving mechanism 3 for driving the two sets of docking mechanisms 2 is arranged in the middle of the upper end surface of the bottom plate 11. Two U-shaped plates 12 are symmetrically installed on the left and right of the upper end surface of the bottom plate 11, and a supporting plate 13 is jointly installed on the upper end surfaces of the U-shaped plates 12. A welding mechanism 8 for simultaneously welding multiple seams is arranged on the supporting plate 13.

[0033] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 8 shown, the docking mechanism 2 includes two bases 20 and two rectangular plates 22. The two bases 20 are symmetrically installed front and rear on the lower end surface of the bottom plate 11, and the base 20 has an inverted T-shaped structure. Two first support plates 21 are symmetrically rotatably installed on the left and right of the base 20. The two rectangular plates 22 are symmetrically installed on the bottom plate 11, and the two bases 20 are located between the two rectangular plates 22. Two sliders 23 are symmetrically installed front and rear on the upper end surface of the rectangular plate 22. Two second support plates 24 are symmetrically rotatably installed on the left and right of the slider 23. Arc-shaped grooves are provided on both the first support plate 21 and the second support plate 24. A first semi-arc plate 25 for squeezing and fixing the muffler is slidably installed in the arc-shaped groove of the first support plate 21, and a second semi-arc plate 26 for squeezing and fixing the exhaust pipe is slidably installed in the arc-shaped groove of the second support plate 24.

[0034] As Figure 2 、 Figure 4 and Figure 5 shown, a rotating part 7 for driving the clamped exhaust pipe and muffler to rotate synchronously is arranged on the bottom plate 11; a first linkage part 4 is arranged between the two bases 20, a second linkage part 5 for driving the corresponding two sliders 23 to move towards each other is arranged on the rectangular plate 22, and a pushing and pulling part 6 for driving the two rectangular plates 22 opposite to each other to move towards each other is arranged on the bottom plate 11.

[0035] As Figure 4 、 Figure 7 、 Figure 8 and Fig. 9 As shown, two No. 1 support plates 21 of the same group and away from the driving mechanism 3 are rotatably connected to the vertical section of the corresponding base 20 through a No. 1 spline sleeve 210, the No. 1 semi-arc plate 25 and the No. 2 semi-arc plate 26 have the same outer diameter but different inner diameters, and two No. 2 support plates 24 on the same rectangular plate 22 and away from the driving mechanism 3 are rotatably connected to the corresponding slider 23 through a No. 2 spline sleeve 240, and the No. 1 spline sleeve 210 and the corresponding No. 1 support plate 21 as well as the No. 2 spline sleeve 240 and the corresponding No. 2 support plate 24 are unidirectionally rotatably matched through a ratchet and pawl mechanism to prevent the No. 1 support plate 21 and the No. 2 support plate 24 from driving the corresponding No. 1 semi-arc plate 25 and the No. 2 semi-arc plate 26 to rotate in the corresponding No. 1 support plate 21 and the No. 2 support plate 24 when they rotate, thereby affecting the ejection of the muffler and the exhaust pipe, and a deflection member 27 for driving the No. 1 support plate 21 and the No. 2 support plate 24 to rotate is provided on the bottom plate 11.

[0036] During the specific operation, the muffler is manually placed between the front and rear opposite first semi-arc plates 25 of the same group, and then the exhaust pipe is placed between the front and rear opposite second semi-arc plates 26 on the same rectangular plate 22, and then the driving mechanism 3 pushes the first support plate 21 and the second support plate 24 to move toward the corresponding muffler and exhaust pipe, so as to be squeezed and fixed by the corresponding first semi-arc plate 25 and the second semi-arc plate 26, and then the push-pull part 6 drives the fixed exhaust pipe to move toward the corresponding muffler, so that the two exhaust pipes are connected to the corresponding muffler at the same time, and then the rotating part 7 drives the first semi-arc plate 25 and the second semi-arc plate 26 to rotate to drive the corresponding The corresponding muffler and exhaust pipe rotate synchronously, and the welding mechanism 8 will weld the connection between the exhaust pipe and the muffler. After the welding is completed, the driving mechanism 3 releases the pushing of the No. 1 support plate 21 and the No. 2 support plate 24, and the No. 1 semi-arc plate 25 and the No. 2 semi-arc plate 26 release the squeezing and fixing of the muffler and the exhaust pipe. Then the deflection member 27 pushes the No. 1 support plate 21 and the No. 2 support plate 24 to rotate, so that the two No. 1 support plates 21 facing each other front and back and the two No. 2 support plates 24 facing each other front and back in the same group are rotated into a V-shaped state to push out the welded muffler and exhaust pipe for replacement of the muffler and exhaust pipe.

[0037] like Figure 1 and Figure 2As shown, the driving mechanism 3 includes a limit plate 30, and two limit plates 30 are symmetrically and slidably installed on the upper end surface of the base 20, and a No. 1 pushing block 31 is installed on the front and rear end surfaces of the limit plates 30, and a support plate 32 is installed on the opposite surfaces of the two limit plates 30 in a staggered manner, and a No. 2 pushing block 33 is installed on the opposite back surfaces of the two support plates 32, and the No. 1 pushing block 31 and the No. 2 pushing block 33 are both isosceles trapezoidal structures, and the opposite surfaces of the two sliders 23 close to the corresponding No. 1 pushing block 31 are installed with a No. 1 abutment plate 34 that contacts the corresponding No. 1 pushing block 31, and the opposite surfaces of the two bases 20 close to the corresponding No. 2 pushing block 33 are installed with a No. 2 abutment plate 35 that contacts the corresponding No. 2 pushing block 33, and a driving member 36 for driving the two support plates 32 to move toward each other is provided on the supporting plate 13.

[0038] like Figure 1 and Figure 2 As shown, the driving member 36 includes a servo motor 360, and the servo motor 360 is installed on the upper end surface of the supporting plate 13. The output shaft of the servo motor 360 rotates through the supporting plate 13 and is then installed with a No. 2 spur gear 361. The No. 2 spur gear 361 is meshed with a No. 2 rack 362 on both the front and rear sides, and the two No. 2 racks 362 are respectively fixedly connected to the corresponding support plates 32.

[0039] like Figure 5 , Figure 6 and Figure 8 As shown, the No. 1 linkage part 4 includes a No. 1 guide column, and two No. 1 guide columns are symmetrically installed on the lower end surface of the base 20. A No. 1 waist groove 40 is provided at the position corresponding to the No. 1 guide column on the bottom plate 11. After the two No. 1 guide columns on the same base 20 slide through the corresponding No. 1 waist groove 40, a No. 1 connecting plate 41 is jointly installed, and a compression spring 42 is installed between the two No. 1 connecting plates 41 of the same group. A driving plate 43 located between the two No. 1 connecting plates 41 of the same group is rotatably installed on the bottom plate 11, and waist grooves are provided at the front and rear ends of the driving plate 43. A roller that slides through the corresponding waist groove is installed on the lower end surface of the No. 1 connecting plate 41.

[0040] like Figure 2 and Figure 3 As shown, the No. 1 linkage part 5 includes a No. 1 spur gear 50, and the middle part of the rectangular plate 22 is rotatably installed with the No. 1 spur gear 50 through a torsion spring rod. The left and right sides of the No. 1 spur gear 50 are meshed with a No. 1 rack 51, and the two No. 1 racks 51 on the same rectangular plate 22 are fixedly connected to the corresponding two sliders 23 respectively.

[0041] During specific operation, after the muffler and the exhaust pipe are placed in the corresponding positions, the servo motor 360 drives the second spur gear 361 to rotate, and the second spur gear 361 drives the two second racks 362 to move toward each other, and the second racks 362 push the corresponding two support plates 32 and the limit plate 30 to move toward each other, and during the movement of the limit plate 30, the inclined surface of the first pushing block 31 will contact the first abutment plate 34, and as the limit plate 30 moves, the first pushing block 31 will push the first abutment plate 34 to move toward the corresponding exhaust pipe, and the first abutment plate 34 will drive the corresponding The No. 2 support plate 24 moves toward the exhaust pipe, and the moved No. 2 support plate 24 drives the corresponding No. 1 spur gear 50 to rotate through the corresponding No. 1 rack 51, and twists the torsion spring rod at the same time. The rotation of the No. 1 spur gear 50 drives the corresponding No. 1 rack 51 to move toward the exhaust pipe, and then the corresponding two No. 2 support plates 24 move toward the corresponding exhaust pipe synchronously, so as to be squeezed and fixed by the No. 2 semi-arc plates 26, and the two No. 2 semi-arc plates 26 facing each other in the same group are connected to form a full circle structure. At this time, the horizontal surface of the No. 1 support plate 34 conflicts with the horizontal surface of the corresponding No. 1 pushing block 31.

[0042] During the movement of the support plate 32, the No. 2 push block 33 also squeezes the No. 2 push plate 35, and the No. 2 push plate 35 pushes the corresponding No. 1 support plate 21 to move toward the muffler. The moving No. 1 support plate 21 drives the driving plate 43 to rotate through the No. 1 connecting plate 41, and the driving plate 43 drives the corresponding No. 1 connecting plate 41 to move synchronously toward the muffler, so that the muffler is squeezed and fixed by the No. 1 semi-arc plate 25, and the two No. 1 semi-arc plates 25 facing each other in the same group are connected to form a full circle structure. At this time, the horizontal surface of the No. 2 push plate 35 conflicts with the horizontal surface of the corresponding No. 2 pushing block 33.

[0043] like Figure 5 and Figure 6 As shown, the push-pull portion 6 includes a No. 2 guide column, and two No. 2 guide columns are symmetrically installed on the front and rear of the lower end surface of the rectangular plate 22. No. 2 waist grooves 60 are opened at positions corresponding to the No. 2 guide columns on the bottom plate 11. After the two No. 2 guide columns on the same rectangular plate 22 slide through the corresponding No. 2 waist grooves 60, a No. 2 connecting plate 61 is installed together. A bidirectional screw 62 is rotatably installed on the lower end surface of the bottom plate 11 through a bearing plate. The two threaded sections of the bidirectional screw 62 are threadedly connected with a screw block 63 that slides with the bottom plate 11, and the screw block 63 is fixedly connected to the corresponding two No. 2 connecting plates 61 opposite to each other front and back.

[0044] During specific operation, the external motor installed on the lower end surface of the base plate 11 drives the bidirectional screw 62 to rotate, and the bidirectional screw 62 drives the screw block 63 to approach each other, and the screw block 63 drives two groups of two left and right opposite No. 2 connecting plates 61 to move toward the muffler, and the No. 2 connecting plate 61 drives the rectangular plate 22 and the exhaust pipe fixed on the rectangular plate 22 to move toward the muffler through the No. 2 guide column, so that the exhaust pipe and the muffler are connected.

[0045] like Figure 1 , Figure 2 , Figure 4 , Figure 8 and Fig. 9 As shown, the rotating part 7 includes a spline shaft 70, a spline shaft 70 is slidably installed in the first spline sleeve 210 and the second spline sleeve 240 of the same group and far away from the driving mechanism 3, and the two ends of the spline shaft 70 are rotatably installed with bearing seats 71, and the bearing seats 71 are connected to the bottom plate 11 for front and rear sliding. The opposite back surfaces of the two bases 20 away from the corresponding support plate 32 are installed with stepper motors through motor seats, and the stepper motors are connected to the corresponding spline shaft 70 through a pulley mechanism. The outer wall of the first semi-arc plate 25 and the outer wall of the second semi-arc plate 26 are both provided with teeth 72, and the first spline sleeve 210 and the second spline sleeve 240 are both installed with gear rings 73 meshing with the corresponding teeth 72. The axis of the spline shaft 70 is collinear with the rotation center of the first support plate 21 and the second support plate 24.

[0046] like Figure 1 As shown, the welding mechanism 8 includes an electric telescopic rod 80, and the electric telescopic rod 80 is installed on the supporting plate 13. The telescopic part of the electric telescopic rod 80 is installed with a fixing plate 81, and the fixing plate 81 is an H-shaped structure, and the four ends of the fixing plate 81 are installed with welding components 82.

[0047] During specific operation, after the exhaust pipe and the muffler are fixed and the docking is completed, the electric telescopic rod 80 drives the fixing plate 81 to move downward, and the fixing plate 81 drives the welding assembly 82 to move toward the connection between the muffler and the exhaust pipe to reach the effective welding distance, and then the stepping motor drives the corresponding spline shaft 70 to rotate through the pulley mechanism, and the spline shaft 70 drives the corresponding No. 1 spline sleeve 210 and No. 2 spline sleeve 240 to rotate, and the No. 1 spline sleeve 210 and No. 2 spline sleeve 240 drive the corresponding gear ring 73 to rotate, and the gear ring 73 rotates and engages with the corresponding teeth 72, thereby driving the corresponding No. 1 semi-arc plate 25 and No. 2 semi-arc plate 26 to rotate synchronously, so that the fixed muffler and the exhaust pipe rotate synchronously, and the welding assembly 82 will weld the connection between the corresponding muffler and the exhaust pipe during the rotation process, and after the welding is completed, the electric telescopic rod 80 drives the welding assembly 82 to move upward away from the muffler and the exhaust pipe through the fixing plate 81, and the spline shaft 70 stops the rotation of the corresponding muffler and the exhaust pipe.

[0048] like Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the deflection member 27 includes a No. 1 pillar 270, and the left and right end faces of the rectangular plate 22 are both installed with a No. 1 pillar 270, a through slot is provided between the two No. 2 waist grooves 60 of the same group, and the lower end of the No. 1 pillar 270 slides through the through slot, and the left and right sides of one of the bases 20 of the same group are symmetrically provided with a No. 2 pillar 271 connected to the bottom plate 11 for sliding up and down, and the upper end faces of the No. 1 pillar 270 and the No. 2 pillar 271 are both installed with a push-pull plate 272, and the front and rear ends of the push-pull plate 272 are both opened with a No. 3 waist groove, and the No. 1 support plate 21 and the No. 2 support plate 24 are both installed with a column 273 that slides through the corresponding No. 3 waist groove, and the lower end face of the bottom plate 11 is installed with a telescopic cylinder 274, and the telescopic end of the telescopic cylinder 274 is installed with an I-shaped plate 275, the lower end of the No. 1 pillar 270 is slidably connected to the I-shaped plate 275, and the lower end of the No. 2 pillar 271 is fixedly connected to the I-shaped plate 275.

[0049] During the specific work, after the welding is completed, the telescopic cylinder 274 drives the I-shaped plate 275 to move upward, and the I-shaped plate 275 pushes the push-pull plate 272 to move upward through the No. 1 pillar 270 and the No. 2 pillar 271, and the push-pull plate 272 will push the corresponding two No. 1 support plates 21 and No. 2 support plates 24 to rotate, so that the two No. 1 support plates 21 and No. 2 support plates 24 facing each other in the same group are rotated into a V-shaped state, and then the welded muffler and exhaust pipe are pushed upward to facilitate the placement of the muffler and the exhaust pipe, and the two No. 1 support plates 21 and No. 2 support plates 24 facing each other in the same group are rotated into a V-shape to support the placed muffler and exhaust pipe so that they can be clamped and fixed, thereby ensuring the smoothness of the welding process of the exhaust pipe and the muffler.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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 based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic welding device for automobile parts, comprising a device frame (10); characterized in that: The equipment frame (10) is provided with a bottom plate (11), two groups of docking mechanisms (2) are symmetrically arranged on the bottom plate (11), a driving mechanism (3) for driving the two groups of docking mechanisms (2) is arranged in the middle of the upper end surface of the bottom plate (11), two U-shaped plates (12) are symmetrically arranged on the upper end surface of the bottom plate (11), a supporting plate (13) is commonly installed on the upper end surface of the U-shaped plates (12), and a welding mechanism (8) for welding multiple seams at the same time is arranged on the supporting plate (13); wherein: The docking mechanism (2) comprises two bases (20) and two rectangular plates (22). The two bases (20) are symmetrically slidably mounted on the lower end surface of the base plate (11) in the front and rear directions, and the base (20) is in an inverted T-shaped structure. Two No. 1 support plates (21) are symmetrically rotatably mounted on the base (20). The two rectangular plates (22) are symmetrically slidably mounted on the base plate (11) in the front and rear directions, and the two bases (20) are located between the two rectangular plates (22). Two sliders (23) are symmetrically slidably mounted on the upper end surfaces of the rectangular plates (22). Two No. 2 support plates (24) are symmetrically rotatably mounted on the sliders (23). Both the No. 1 support plate (21) and the No. 2 support plate (24) are provided with arc grooves. A No. 1 semi-arc plate (25) for pressing and fixing the muffler is slidably mounted in the arc groove of the No. 1 support plate (21), and a No. 2 semi-arc plate (26) for pressing and fixing the exhaust pipe is slidably mounted in the arc groove of the No. 2 support plate (24). The bottom plate (11) is provided with a rotating part (7) for driving the clamped exhaust pipe and the muffler to rotate synchronously; a first linkage part (4) is provided between the two bases (20); a second linkage part (5) is provided on the rectangular plate (22) for driving the corresponding two sliders (23) to move toward each other; and a push-pull part (6) is provided on the bottom plate (11) for driving the two rectangular plates (22) opposite to each other to move toward each other; Two No. 1 support plates (21) in the same group and away from the driving mechanism (3) are rotatably connected to the vertical section of the corresponding base (20) through a No. 1 spline sleeve (210); the No. 1 semi-arc plate (25) and the No. 2 semi-arc plate (26) have the same outer diameter but different inner diameters; two No. 2 support plates (24) on the same rectangular plate (22) and away from the driving mechanism (3) are rotatably connected to the corresponding slider (23) through a No. 2 spline sleeve (240); the No. 1 spline sleeve (210) and the corresponding No. 1 support plate (21) and the No. 2 spline sleeve (240) and the corresponding No. 2 support plate (24) are unidirectionally rotatably matched through a ratchet pawl mechanism; and a deflection member (27) for driving the No. 1 support plate (21) and the No. 2 support plate (24) to rotate is provided on the bottom plate (11); The driving mechanism (3) comprises a limit plate (30), the upper end surface of the base (20) is symmetrically and slidably mounted with two limit plates (30), the front and rear end surfaces of the limit plates (30) are both mounted with a first pushing block (31), the opposite surfaces of the two limit plates (30) are staggeredly mounted with a support plate (32), the opposite back surfaces of the two support plates (32) are both mounted with a second pushing block (33), and the first pushing block (31) and the second pushing block (33) are both isosceles ladders. The structure is shaped, the opposing surfaces of the two sliders (23) close to the corresponding No. 1 pushing block (31) are both installed with a No. 1 push plate (34) that contacts the corresponding No. 1 pushing block (31), the opposing surfaces of the two bases (20) close to the corresponding No. 2 pushing block (33) are both installed with a No. 2 push plate (35) that contacts the corresponding No. 2 pushing block (33), and the supporting plate (13) is provided with a driving member (36) for driving the two supporting plates (32) to move toward each other; The No. 1 linkage part (4) comprises a No. 1 guide column, two No. 1 guide columns are symmetrically installed on the lower end surface of the base (20), and No. 1 waist grooves (40) are provided at positions corresponding to the No. 1 guide columns on the bottom plate (11). After the two No. 1 guide columns on the same base (20) slide through the corresponding No. 1 waist grooves (40), a No. 1 connecting plate (41) is installed together, and a compression spring (42) is installed between the two No. 1 connecting plates (41) of the same group. A driving plate (43) located between the two No. 1 connecting plates (41) of the same group is rotatably installed on the bottom plate (11), and waist grooves are provided at both front and rear ends of the driving plate (43). A roller that slides through the corresponding waist groove is installed on the lower end surface of the No. 1 connecting plate (41); The second linkage part (5) comprises a first spur gear (50), the middle part of the rectangular plate (22) is rotatably mounted with the first spur gear (50) through a torsion spring rod, the left and right sides of the first spur gear (50) are meshed with first racks (51), and the two first racks (51) on the same rectangular plate (22) are respectively fixedly connected to the corresponding two sliders (23); The push-pull part (6) comprises a No. 2 guide column, two No. 2 guide columns are symmetrically installed on the lower end face of the rectangular plate (22) in the front and rear directions, and No. 2 waist grooves (60) are provided on the bottom plate (11) at positions corresponding to the No. 2 guide columns one by one, and after the two No. 2 guide columns on the same rectangular plate (22) slide through the corresponding No. 2 waist grooves (60), a No. 2 connecting plate (61) is installed together, and a bidirectional screw rod (62) is rotatably installed on the lower end face of the bottom plate (11) through a bearing plate, and the two threaded sections of the bidirectional screw rod (62) are both threadedly connected with a screw block (63) that is slidably matched with the bottom plate (11), and the screw block (63) is fixedly connected to the corresponding two No. 2 connecting plates (61) opposite to each other in the front and rear directions; The deflection member (27) comprises a No. 1 pillar (270), the left and right end surfaces of the rectangular plate (22) are both mounted with the No. 1 pillar (270), a through groove is provided between the two No. 2 waist grooves (60) of the same group, and a No. 2 pillar (271) connected to the bottom plate (11) for sliding up and down is symmetrically provided on the left and right sides of one of the bases (20) of the same group, and a push-pull plate (272) is mounted on the upper end surface of the No. 1 pillar (270) and the upper end surface of the No. 2 pillar (271), and the push-pull plate (272) is mounted on the upper end surface of the No. 1 pillar (270). The front and rear ends of the pull plate (272) are both provided with No. 3 waist grooves, the No. 1 support plate (21) and the No. 2 support plate (24) are both provided with columns (273) which slide through the corresponding No. 3 waist grooves, the lower end surface of the bottom plate (11) is provided with a telescopic cylinder (274), the telescopic end of the telescopic cylinder (274) is provided with an I-shaped plate (275), the lower end of the No. 1 support column (270) is slidably connected to the I-shaped plate (275), and the lower end of the No. 2 support column (271) is fixedly connected to the I-shaped plate (275).

2. The automatic welding device for automobile parts according to claim 1, characterized in that: The rotating part (7) comprises a spline shaft (70), a spline shaft (70) is slidably mounted in a first spline sleeve (210) and a second spline sleeve (240) of the same group and far away from the driving mechanism (3), bearing seats (71) are rotatably mounted at both ends of the spline shaft (70), and the bearing seats (71) are slidably connected to the bottom plate (11) in a front-rear manner, stepper motors are mounted on opposite back surfaces of two bases (20) far away from the corresponding support plate (32) through motor seats, and the stepper motors are transmission-connected to the corresponding spline shaft (70) through a pulley mechanism, teeth (72) are arranged on the outer wall of the first semi-arc plate (25) and the outer wall of the second semi-arc plate (26), and gear rings (73) meshing with the corresponding teeth (72) are mounted on the first spline sleeve (210) and the second spline sleeve (240).

3. The automatic welding device for automobile parts according to claim 1, characterized in that: The driving member (36) comprises a servo motor (360), and the servo motor (360) is installed on the upper end surface of the supporting plate (13). The output shaft of the servo motor (360) rotates through the supporting plate (13) and is then installed with a second spur gear (361). The front and rear sides of the second spur gear (361) are meshed with second racks (362), and the two second racks (362) are respectively fixedly connected to the corresponding support plates (32).

4. The automatic welding device for automobile parts according to claim 1, characterized in that: The welding mechanism (8) comprises an electric telescopic rod (80), the electric telescopic rod (80) is installed on the supporting plate (13), the telescopic portion of the electric telescopic rod (80) is installed with a fixing plate (81), and the fixing plate (81) is in an H-shaped structure, and the four ends of the fixing plate (81) are all installed with welding components (82).

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