Welding device for local connection of automobile sheet metal parts

Abstract

A welding device for partial connection of automobile sheet metal parts relates to the technical field of automobile parts welding equipment, including a welding workbench, which is a horizontally arranged square table, and is respectively provided with a swing side clamp assembly, a plane welding assembly, a mobile docking assembly and a lateral welding assembly; the upper surface of the welding workbench is provided with two symmetrical movable limit openings in the transverse direction, and the upper surface of the welding workbench is also provided with a longitudinally extending lifting and lowering connecting opening, and a swing avoidance opening is provided on the transverse end surface of one side of the welding workbench. The present invention solves the problems that the welding equipment in the traditional technology is used for the welding processing of an automobile sheet metal part composed of an arc-shaped enclosure, two horizontal plates and a longitudinal plate, such as the inconvenience of clamping and positioning of multiple welding parts, the difficulty of meeting the diverse welding needs by a single welding method, the inconvenience of transferring and docking each welding part, and the difficulty of flipping operation during double-sided welding.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts welding equipment, and in particular to a welding device for local connection of automobile sheet metal parts. Background Art

[0002] Sheet metal is a comprehensive cold processing technology for thin metal plates, including shearing, punching / cutting / combining, folding, welding, riveting, splicing, forming, etc. Products processed by sheet metal technology are called sheet metal parts. The front hood, rear hood, roof, left front fender, right front fender, left rear fender, right rear fender, left front door, left rear door, right front door, right rear door and other panels on the car are all sheet metal parts.

[0003] After cutting sheet metal parts into the required size, the next step is to connect them, which is an important part of the sheet metal manufacturing process. Sheet metal connection enables product engineers to connect separate metal parts to form complex functional structures. The main sheet metal connection technologies include riveting, bonding, screw assembly and sheet metal welding. Among them, sheet metal welding is the most common and effective connection technology.

[0004] Sheet metal welding is a connection technology that uses pressure, heat or both to fuse two or more thin metal sheets together. When welding different automotive sheet metal parts, due to different design structures, the component divisions, joint types, and welding point arrangements are also different. For example, in the process of partial welding of an automotive sheet metal part composed of an arc-shaped enclosure, two horizontal plates, and a longitudinal plate, due to the large number of welded parts and the large differences in the shapes and sizes of multiple welded parts, the following problems are generally encountered when using existing welding equipment to weld the above automotive sheet metal parts:

[0005] 1. It is inconvenient to clamp multiple welding parts, resulting in inaccurate positioning and affecting welding accuracy.

[0006] 2. The welding method is single, and it is impossible to achieve adaptive welding of different welding parts at different welding positions.

[0007] 3. During the welding process, due to the diversity of welding parts, there is a problem of difficulty in transferring and docking the welding parts.

[0008] 4. For parts that require double-sided welding, there is a problem of inconvenient welding flipping operation.

[0009] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the invention

[0010] In view of the defects in the prior art, the present invention provides a welding device for local connection of automobile sheet metal parts, so as to solve the problems that the welding equipment in the traditional technology is used for welding processing of an automobile sheet metal part composed of an arc-shaped enclosure, two horizontal plates and a longitudinal plate, such as the inconvenience of clamping and positioning of multiple welding parts, the difficulty of a single welding method to meet diverse welding needs, the inconvenience of transferring and docking the welding parts, and the difficulty of flipping operation during double-sided welding.

[0011] To achieve the above object, the present invention provides the following technical solutions:

[0012] The invention discloses a welding device for partial connection of automobile sheet metal parts, comprising a welding workbench which is a horizontally arranged square table and is respectively provided with a swing side clamp assembly, a plane welding assembly, a movable docking assembly and a lateral welding assembly.

[0013] As an optimized solution, two symmetrical movable limit openings are opened in the horizontal direction on the upper surface of the welding workbench, and a longitudinally extending lifting connecting opening is also opened in the upper surface of the welding workbench. The two ends of the lifting connecting opening are respectively connected to the two movable limit openings, and a swing avoidance opening is opened on the horizontal end face of one side of the welding workbench.

[0014] As an optimized solution, a plurality of L-shaped support plates are fixedly connected to the lower surface of the welding workbench.

[0015] As an optimized solution, the planar welding assembly includes a bridge-shaped support plate, which is longitudinally extended and has two ends of a lower portion respectively fixed to the longitudinal side end surfaces of the welding workbench.

[0016] As an optimized solution, two symmetrical sliding drive motors are fixedly connected to the upper surface of the bridge-shaped support plate along the longitudinal direction, a longitudinal threaded rod is provided between the two sliding drive motors, and the output shaft ends of the two sliding drive motors are respectively fixedly connected to the side end surfaces of the longitudinal threaded rod.

[0017] As an optimized solution, a longitudinally extending sliding clamping opening is provided on the upper surface of the bridge-shaped support plate, a sliding seat is provided in the sliding clamping opening, and the longitudinal threaded rod passes through and is threadedly connected to the sliding seat.

[0018] As an optimized solution, a vertical telescopic cylinder is fixedly connected to the lower surface of the sliding seat, and a flat welding gun is fixedly connected to the lower telescopic end of the telescopic cylinder.

[0019] As an optimized solution, the mobile docking assembly includes two symmetrically arranged mobile magnetic seats and a lifting magnetic seat, the two mobile magnetic seats are respectively slidably mounted in the two mobile limit openings, and the lifting magnetic seat is lifted and mounted in the lifting connecting port.

[0020] As an optimized solution, two symmetrical displacement drive motors are fixed on the lateral end face on the other side of the welding workbench, and the two displacement drive motors are respectively arranged in one-to-one correspondence with the two movable limit openings, and a transverse threaded rod is rotatably provided in each of the movable limit openings, and the two ends of the transverse threaded rod are respectively rotatably installed on the lateral inner wall of the movable limit opening, and the output shaft end of each displacement drive motor extends into the movable limit opening and is fixedly connected to the lateral side end face of the corresponding transverse threaded rod.

[0021] As an optimized solution, a driving base is provided under each of the mobile magnetic seats, the transverse threaded rod passes through and is threadedly connected to the driving base, and two symmetrical electric-controlled telescopic cylinders are fixedly connected to the upper surface of each driving base, and the upper telescopic end of the electric-controlled telescopic cylinder is fixedly connected to the lower surface of the mobile magnetic seat.

[0022] As an optimized solution, a vertical lifting and telescopic cylinder is fixedly connected to the upper surface of one of the L-shaped support plates, and the upper telescopic end of the lifting and telescopic cylinder extends into the lifting connecting port and is fixedly connected to the lower surface of the lifting magnetic seat.

[0023] As an optimized solution, the swing side clamp assembly includes a swing side plate, the end of the swing side plate is swingably installed in the swing avoidance opening, a motor mounting groove is respectively opened at the side edge of each longitudinal end face of the welding workbench, a swing drive motor is fixedly connected to the longitudinal side end face of each motor mounting groove, and the output shaft ends of the two swing drive motors respectively extend into the swing avoidance opening and are fixedly connected to the side end face of the swing side plate.

[0024] As an optimized solution, a stepper motor is fixedly connected to the outer end surface of the swing side plate, and the output shaft end of the stepper motor passes through the swing side plate and is fixedly connected to a circular lateral turntable.

[0025] As an optimized solution, a horizontal clamping telescopic cylinder is fixedly connected to the lateral outer end face of the lateral turntable, the telescopic end of the clamping telescopic cylinder is fixedly connected to a square clamping intermediate seat, a two-way telescopic cylinder is fixed inside the clamping intermediate seat, and each telescopic end of the two-way telescopic cylinder is respectively fixedly connected to an inner supporting splint.

[0026] As an optimized solution, two symmetrical fixed side panels are respectively provided on both sides of the welding workbench corresponding to the lifting magnetic suction seat, the lower half of the fixed side panels are fixedly connected to the longitudinal side end faces of the welding workbench, and each of the fixed side panels is respectively fixedly connected to a longitudinal positioning telescopic cylinder, and the telescopic end of the positioning telescopic cylinder is fixedly connected to a positioning push plate.

[0027] As an optimized solution, a hinged seat is fixedly connected to each longitudinal side end face of the welding workbench, and the hinged seat is arranged between the bridge-type support plate and the fixed side plate. A flip drive motor is fixedly connected to the side end face of each hinged seat, and the output shaft end of the flip drive motor passes through the hinged seat and is fixedly connected to a flip baffle, which is an L-shaped plate arranged close to the welding workbench.

[0028] As an optimized solution, two longitudinally symmetrical steering mounting grooves are opened on one side of the upper surface of the welding workbench, and the lateral welding assembly includes two symmetrically arranged disc steering seats, which are rotatably installed in the steering mounting grooves and are arranged close to the inner bottom surface of the steering mounting grooves.

[0029] As an optimized solution, two symmetrical steering drive motors are fixedly connected to the two steering mounting grooves corresponding to one side of the lower surface of the welding workbench, and the output shaft ends of the steering drive motors pass upward through the welding workbench and are fixedly connected to the center of the lower surface of the disc steering seat.

[0030] As an optimized solution, a vertical hydraulic telescopic cylinder is fixedly connected to the center of the upper surface of each disc steering seat, and a horizontal lateral welding gun is fixedly connected to the upper telescopic end of the hydraulic telescopic cylinder.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] The swing side clamp assembly provided in the present invention can clamp and position the arc-shaped enclosure during the welding process, and after the single-side welding is completed, the welding component can be driven to rotate to achieve the face change, thereby completing the double-sided welding while the welding mechanism remains unchanged. Specifically, the swing side clamp assembly includes a swing side plate, which can be switched between horizontal and vertical states under the control of a swing drive motor, thereby respectively clamping and loading the arc-shaped enclosure and welding positioning. A clamping telescopic cylinder is fixedly connected to the swing side plate, and a clamping middle seat is fixedly connected to the telescopic end of the clamping telescopic cylinder. The arc-shaped enclosure can be clamped and positioned by telescoping the inner support clamp plate provided on the clamping middle seat, and the clamped arc-shaped enclosure can be driven to move laterally by controlling the telescoping of the clamping telescopic cylinder, thereby adjusting the welding position; further, after completing the single-side end face welding, the side turntable is driven to rotate by a stepping motor, so that the welding component can be rotated and changed to achieve double-sided welding.

[0033] The plane welding assembly provided in the present invention can realize the transverse plane welding between the arc-shaped enclosure and the horizontal plate, and the longitudinal plane welding between the arc-shaped enclosure and the longitudinal plate. Specifically, the plane welding assembly includes a bridge-shaped support plate fixedly connected to the welding workbench, and a sliding seat is slidably provided on the bridge-shaped support plate. The sliding seat can slide longitudinally along the sliding clamping port under the drive of the sliding drive motor and the longitudinal threaded rod, and the longitudinal plane welding is completed by using a plane welding gun; and under the premise that the plane welding gun is fixed, the transverse plane welding can be realized by driving the welding components to move transversely as a whole.

[0034] The mobile docking assembly provided in the present invention can realize the clamping and loading of the horizontal plate and the vertical plate in the automobile sheet metal parts as well as the welding positioning. Specifically, the mobile docking assembly is provided with a mobile magnetic seat for clamping and positioning the horizontal plate, and a lifting magnetic seat for clamping and positioning the vertical plate. By driving the mobile magnetic seat to move horizontally, on the one hand, the flip baffle can be used to realize the blocking positioning of the horizontal plate, and on the other hand, the horizontal plate and the vertical plate can be driven for welding and docking; by driving the mobile magnetic seat and the lifting magnetic seat to rise and fall synchronously, the welding height of the horizontal plate and the vertical plate can be adjusted.

[0035] The lateral welding assembly provided in the present invention can realize the lateral welding connection of the transverse plate and the longitudinal plate. Specifically, the lateral welding assembly includes two lateral welding guns, each of which can be raised and lowered respectively under the drive of the hydraulic telescopic cylinder to realize vertical welding, and the side welding angle can be adjusted by starting the steering drive motor to drive the disc steering seat to rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0037] Figure 1 It is a schematic cross-sectional view of the internal structure of each component in the present invention in the main viewing direction;

[0038] Figure 2 It is a schematic cross-sectional view of the internal structure of each component in the present invention in a top view direction;

[0039] Figure 3 It is a schematic cross-sectional view of the internal structure of the swing side clamp assembly in the present invention in the side view direction;

[0040] Figure 4 It is a schematic cross-sectional view of the internal structure of the planar welding assembly in the present invention in the side view direction;

[0041] Figure 5It is a schematic cross-sectional view of the internal structure of the mobile docking assembly in the present invention in the side view direction;

[0042] Figure 6 It is a schematic cross-sectional view of the internal structure of the lateral welding assembly in the present invention in the side view direction;

[0043] Figure 7 It is a schematic diagram of the external overall structure of the present invention in the main viewing direction;

[0044] Figure 8 It is a schematic diagram of the external overall structure of the present invention in a top view;

[0045] Fig. 9 It is a top view schematic diagram of the finished product of the automobile sheet metal welding in the present invention.

[0046] In the figure: 1- welding workbench, 2- moving limit port, 3- lifting connection port, 4- L-shaped support plate, 5- swing side plate, 6- motor installation slot, 7- swing drive motor, 8- stepper motor, 9- lateral turntable, 10- clamping telescopic cylinder, 11- clamping middle seat, 12- two-way telescopic cylinder, 13- inner support splint, 14- bridge support plate, 15- sliding drive motor, 16- longitudinal threaded rod, 17- sliding clamping port, 18- sliding seat, 19- telescopic cylinder, 20- flat welding gun, 21- mobile magnetic seat, 22-lifting magnetic seat, 23-displacement drive motor, 24-transverse threaded rod, 25-drive base, 26-electrically controlled telescopic cylinder, 27-lifting telescopic cylinder, 28-fixed side plate, 29-positioning telescopic cylinder, 30-positioning push plate, 31-hinge seat, 32-flip drive motor, 33-flip baffle, 34-steering mounting groove, 35-disc steering seat, 36-steering drive motor, 37-hydraulic telescopic cylinder, 38-lateral welding gun, 39-swing avoidance, 40-transverse plate, 41-longitudinal plate, 42-arc enclosure. DETAILED DESCRIPTION

[0047] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0048] like Figures 1 to 9 As shown, a welding device for local connection of automobile sheet metal parts includes a welding workbench 1, which is a horizontally arranged square table. The welding workbench 1 is respectively provided with a swing side clamp assembly, a plane welding assembly, a movable docking assembly and a lateral welding assembly.

[0049] Two symmetrical movable limit openings 2 are opened in the horizontal direction on the upper surface of the welding workbench 1. A longitudinally extending lifting connecting opening 3 is also opened in the upper surface of the welding workbench 1. Both ends of the lifting connecting opening 3 are respectively connected with the two movable limit openings 2. A swing avoidance opening 39 is opened on the horizontal end surface of one side of the welding workbench 1.

[0050] A plurality of L-shaped support plates 4 are fixedly connected to the lower surface of the welding workbench 1 .

[0051] The swing side clamp assembly includes a swing side plate 5, the end of the swing side plate 5 is swingably installed in the swing avoidance opening 39, and a motor mounting groove 6 is respectively opened at the side edge of each longitudinal end face of the welding workbench 1. A swing drive motor 7 is fixedly connected to the longitudinal side end face of each motor mounting groove 6, and the output shaft ends of the two swing drive motors 7 respectively extend into the swing avoidance opening 39 and are fixedly connected to the side end face of the swing side plate 5.

[0052] A stepper motor 8 is fixedly connected to the outer end surface of the swing side plate 5 , and the end of the output shaft of the stepper motor 8 passes through the swing side plate 5 and is fixedly connected to a circular lateral turntable 9 .

[0053] A horizontal clamping telescopic cylinder 10 is fixedly connected to the lateral outer end surface of the lateral turntable 9, and a square clamping intermediate seat 11 is fixedly connected to the telescopic end of the clamping telescopic cylinder 10. A two-way telescopic cylinder 12 is fixed inside the clamping intermediate seat 11, and each telescopic end of the two-way telescopic cylinder 12 is respectively fixedly connected to an inner supporting clamp 13.

[0054] The plane welding assembly comprises a bridge-shaped support plate 14 , which is longitudinally extended and has two ends of a lower portion fixedly connected to the longitudinal side end surfaces of the welding workbench 1 .

[0055] Two symmetrical sliding drive motors 15 are fixedly connected to the upper surface of the bridge-shaped support plate 14 along the longitudinal direction. A longitudinal threaded rod 16 is arranged between the two sliding drive motors 15 . The output shaft ends of the two sliding drive motors 15 are fixedly connected to the side end surfaces of the longitudinal threaded rod 16 .

[0056] A longitudinally extending sliding clamping opening 17 is formed on the upper surface of the bridge-shaped support plate 14 . A sliding seat 18 is disposed in the sliding clamping opening 17 . The longitudinal threaded rod 16 passes through and is threadedly connected to the sliding seat 18 .

[0057] A vertical telescopic cylinder 19 is fixedly connected to the lower surface of the sliding seat 18 , and a flat welding gun 20 is fixedly connected to the lower telescopic end of the telescopic cylinder 19 .

[0058] The mobile docking assembly includes two symmetrically arranged mobile magnetic seats 21 and a lifting magnetic seat 22. The two mobile magnetic seats 21 are respectively slidably mounted in the two mobile limit openings 2, and the lifting magnetic seat 22 is lifted and mounted in the lifting connecting opening 3.

[0059] Two symmetrical displacement drive motors 23 are fixed on the lateral end face on the other side of the welding workbench 1. The two displacement drive motors 23 are respectively arranged in one-to-one correspondence with the two movable limit openings 2. A lateral threaded rod 24 is rotatably provided in each movable limit opening 2. The two ends of the lateral threaded rod 24 are respectively rotatably installed on the lateral inner wall of the movable limit opening 2. The output shaft end of each displacement drive motor 23 extends into the movable limit opening 2 and is fixedly connected to the lateral side end face of the corresponding lateral threaded rod 24.

[0060] A driving base 25 is provided under each mobile magnetic seat 21, and a transverse threaded rod 24 passes through and is threadedly connected to the driving base 25. Two symmetrical electric-controlled telescopic cylinders 26 are fixedly connected to the upper surface of each driving base 25, and the upper telescopic end of the electric-controlled telescopic cylinder 26 is fixedly connected to the lower surface of the mobile magnetic seat 21.

[0061] A vertical lifting and telescopic cylinder 27 is fixedly connected to the upper surface of one of the L-shaped support plates 4 . The upper telescopic end of the lifting and telescopic cylinder 27 extends into the lifting connecting port 3 and is fixedly connected to the lower surface of the lifting magnetic seat 22 .

[0062] Two symmetrical fixed side panels 28 are respectively provided on both sides of the welding workbench 1 corresponding to the lifting magnetic suction seat 22. The lower half of the fixed side panels 28 are fixedly connected to the longitudinal side end surface of the welding workbench 1. A longitudinal positioning telescopic cylinder 29 is respectively fixedly connected to each fixed side panel 28, and a positioning push plate 30 is fixedly connected to the telescopic end of the positioning telescopic cylinder 29.

[0063] A hinged seat 31 is fixedly connected to each longitudinal side end face of the welding workbench 1. The hinged seat 31 is arranged between the bridge-type support plate 14 and the fixed side plate 28. A flip drive motor 32 is fixedly connected to the side end face of each hinged seat 31. The end of the output shaft of the flip drive motor 32 passes through the hinged seat 31 and is fixedly connected to a flip baffle 33. The flip baffle 33 is an L-shaped plate arranged close to the welding workbench 1.

[0064] Two longitudinally symmetrical steering mounting grooves 34 are provided on one side of the upper surface of the welding workbench 1. The lateral welding assembly includes two symmetrically arranged disc steering seats 35. The disc steering seats 35 are rotatably installed in the steering mounting grooves 34 and are arranged close to the inner bottom surfaces of the steering mounting grooves 34. Two symmetrical steering drive motors 36 are respectively fixedly connected to the two steering mounting grooves 34 corresponding to one side of the lower surface of the welding workbench 1. The output shaft ends of the steering drive motors 36 pass upward through the welding workbench 1 and are fixedly connected to the center of the lower surface of the disc steering seat 35.

[0065] A vertical hydraulic telescopic cylinder 37 is fixedly connected to the center of the upper surface of each disc steering seat 35 , and a horizontal lateral welding gun 38 is fixedly connected to the upper telescopic end of the hydraulic telescopic cylinder 37 .

[0066] When the present invention is in use: first, external equipment such as a manipulator is used to clamp and load the automobile sheet metal parts to be welded. Specifically, the two horizontal plates 40 in the sheet metal parts are respectively adsorbed and clamped on the two movable magnetic seats 21, and the longitudinal plate 41 is adsorbed and clamped on the lifting magnetic seat 22. The arc-shaped enclosure 42 is placed on the clamping intermediate seat 11, and the two-way telescopic cylinder 12 is controlled to extend, and the arc-shaped enclosure 42 is clamped and positioned from the inside by using two inner supporting clamps 13; the swing drive motor 7 is started to drive the swing side plate 5 to swing from a horizontal state to a vertical state, and the clamping telescopic cylinder 10 is controlled to extend and retract to adjust the welding position of the arc-shaped enclosure 42; the lifting telescopic cylinder 27 is controlled to extend to drive the lifting magnetic seat 22 to move up, and the two positioning telescopic cylinders are controlled at the same time. 29 extends, and drives the two positioning push plates 30 to move in opposite directions, and pushes the longitudinal plate 41 into position; starts the two displacement drive motors 23 respectively, and the displacement drive motor 23 drives the transverse threaded rod 24 to rotate, thereby controlling the driving base 25 to move laterally along the movable limit opening 2, and starts the flip drive motor 32 at the same time, and the flip drive motor 32 drives the flip baffle 33 to flip to the top of the welding workbench 1, and the flip baffle 33 can block and position the transverse plate 40 during the movement of the driving base 25 and the movable magnetic suction seat 21; controls the displacement drive motor 23 to reverse, controls the driving base 25 to move in the opposite direction, so that the ends of the two transverse plates 40 are respectively connected to the side end surfaces of the longitudinal plate 41, and controls the electric control telescopic cylinder 26 to extend, and drives the transverse plate 40 to move upward 40 and the longitudinal plate 41 are moved to a position flush with the longitudinal plate 41; the steering drive motor 36 is started, and the steering drive motor 36 drives the disc steering seat 35 to rotate, so that the lateral welding gun 38 is directly opposite to the joint part of the transverse plate 40 and the longitudinal plate 41 for lateral welding. During the welding process, the continuity of the weld is maintained by controlling the extension and contraction of the hydraulic telescopic cylinder 37; after the sheet metal welding of the transverse plate 40 and the longitudinal plate 41 is completed, the lifting and telescopic cylinder 27 is controlled to shorten, and the lifting and telescopic cylinder 27 is driven to descend, and the flip drive motor 32 is started again at the same time, and the flip drive motor 32 drives the flip baffle 33 to flip to a vertical position, and the driving base 25 is controlled to move horizontally, and the welded transverse plate 40 and the longitudinal plate 41 are moved to the bottom of the bridge-type support plate 14, and the clamping telescopic cylinder 10 is controlled to extend to make the arc The arc-shaped enclosure plate 42 is also moved to the bottom of the bridge-shaped support plate 14, and it is assembled and docked with the horizontal plate 40 and the vertical plate 41; the telescopic cylinder 19 is controlled to extend, and the plane welding gun 20 is driven to move down to the top of the docking position of the arc-shaped enclosure plate 42 and the vertical plate 41, and the sliding drive motor 15 is started. The sliding drive motor 15 drives the longitudinal threaded rod 16 to rotate, and the position of the plane welding gun 20 is adjusted by driving the sliding seat 18 to slide longitudinally along the sliding clamping port 17 to perform longitudinal plane welding; after the longitudinal plane welding is completed, the plane welding gun 20 is moved to the top of the docking position of the arc-shaped enclosure plate 42 and the horizontal plate 40, and the arc-shaped enclosure plate 42 and the horizontal welding position are adjusted by controlling the clamping telescopic cylinder 10 to telescope, and the horizontal plane welding is performed using the plane welding gun 20;After the single-side welding is completed, the clamping telescopic cylinder 10 is controlled to shorten, the swing side plate 5 is controlled to swing back to the horizontal state again, the stepper motor 8 is started, and the stepper motor 8 drives the lateral rotating plate to rotate 180° to perform welding and changing the surface, and then the swing side plate 5 is swung to the vertical state again, and the plane welding gun 20 is used to perform plane welding on the other side of the horizontal plate 40, the vertical plate 41 and the arc-shaped enclosure plate 42. ;

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A welding device for local connection of automobile sheet metal parts, characterized in that: The welding workbench (1) is a horizontally arranged square table, and a swing side clamp assembly, a plane welding assembly, a movable docking assembly and a lateral welding assembly are respectively arranged on the welding workbench (1); The upper surface of the welding workbench (1) is provided with two symmetrical movable limit openings (2) in the transverse direction, and the upper surface of the welding workbench (1) is also provided with a longitudinally extending lifting connection opening (3), the two ends of the lifting connection opening (3) are respectively connected to the two movable limit openings (2), and a swing avoidance opening (39) is provided on a transverse end surface of one side of the welding workbench (1); A plurality of L-shaped support plates (4) are fixedly connected to the lower surface of the welding workbench (1); The planar welding assembly comprises a bridge-shaped support plate (14), the bridge-shaped support plate (14) is longitudinally extended and has two ends of a lower portion respectively fixed to the longitudinal side end surfaces of the welding workbench (1); Two symmetrical sliding drive motors (15) are fixedly connected to the upper surface of the bridge-shaped support plate (14) along the longitudinal direction, a longitudinal threaded rod (16) is provided between the two sliding drive motors (15), and the output shaft ends of the two sliding drive motors (15) are respectively fixedly connected to the side end surfaces of the longitudinal threaded rod (16); The upper surface of the bridge-shaped support plate (14) is provided with a longitudinally extending sliding clamping opening (17), a sliding seat (18) is provided in the sliding clamping opening (17), and the longitudinal threaded rod (16) passes through and is threadedly connected to the sliding seat (18); A vertical telescopic cylinder (19) is fixedly connected to the lower surface of the sliding seat (18), and a flat welding gun (20) is fixedly connected to the lower telescopic end of the telescopic cylinder (19); The mobile docking assembly comprises two symmetrically arranged mobile magnetic seats (21) and a lifting magnetic seat (22), the two mobile magnetic seats (21) are respectively slidably mounted in the two mobile limit openings (2), and the lifting magnetic seat (22) is lifted and mounted in the lifting connecting opening (3); Two symmetrical displacement drive motors (23) are fixed on the lateral end surface of the other side of the welding workbench (1), and the two displacement drive motors (23) are respectively arranged in one-to-one correspondence with the two movable limit openings (2), and a lateral threaded rod (24) is rotatably arranged in each movable limit opening (2), and the two ends of the lateral threaded rod (24) are respectively rotatably mounted on the lateral inner side wall of the movable limit opening (2), and the output shaft end of each displacement drive motor (23) extends into the movable limit opening (2) and is fixedly connected to the lateral side end surface of the corresponding lateral threaded rod (24); A driving base (25) is provided below each of the movable magnetic seats (21), the transverse threaded rod (24) passes through and is threadedly connected to the driving base (25), and two symmetrical electric-controlled telescopic cylinders (26) are fixedly connected to the upper surface of each of the driving bases (25), and the upper telescopic ends of the electric-controlled telescopic cylinders (26) are fixedly connected to the lower surface of the movable magnetic seat (21); A vertical lifting and telescopic cylinder (27) is fixedly connected to the upper surface of one of the L-shaped support plates (4), and the upper telescopic end of the lifting and telescopic cylinder (27) extends into the lifting connecting port (3) and is fixedly connected to the lower surface of the lifting magnetic seat (22); The swing side clamp assembly comprises a swing side plate (5), the end of the swing side plate (5) is swingably mounted in the swing avoidance opening (39), a motor mounting groove (6) is respectively provided at the side edge of each longitudinal end surface of the welding workbench (1), a swing drive motor (7) is fixedly connected to the longitudinal side end surface of each motor mounting groove (6), and the output shaft ends of the two swing drive motors (7) respectively extend into the swing avoidance opening (39) and are fixedly connected to the side end surface of the swing side plate (5); A stepper motor (8) is fixedly connected to the outer end surface of the swing side plate (5); the output shaft end of the stepper motor (8) passes through the swing side plate (5) and is fixedly connected to a circular lateral rotating disk (9); A horizontal clamping telescopic cylinder (10) is fixedly connected to the transverse outer end surface of the lateral turntable (9); a square clamping intermediate seat (11) is fixedly connected to the telescopic end of the clamping telescopic cylinder (10); a two-way telescopic cylinder (12) is fixed inside the clamping intermediate seat (11); and each telescopic end of the two-way telescopic cylinder (12) is respectively fixedly connected to an inner support clamping plate (13).

2. The welding device for partial connection of automobile sheet metal parts according to claim 1, characterized in that: Two symmetrical fixed side panels (28) are respectively provided on both sides of the welding workbench (1) corresponding to the lifting magnetic seat (22); the lower half of the fixed side panels (28) are fixedly connected to the longitudinal side end surfaces of the welding workbench (1); each of the fixed side panels (28) is respectively fixedly connected to a longitudinal positioning telescopic cylinder (29); and a positioning push plate (30) is fixedly connected to the telescopic end of the positioning telescopic cylinder (29).

3. The welding device for partial connection of automobile sheet metal parts according to claim 2, characterized in that: Each longitudinal side end face of the welding workbench (1) is also fixedly connected to a hinge seat (31), and the hinge seat (31) is arranged between the bridge-shaped support plate (14) and the fixed side plate (28). A flip drive motor (32) is fixedly connected to the side end face of each hinge seat (31), and the output shaft end of the flip drive motor (32) passes through the hinge seat (31) and is fixedly connected to a flip baffle (33), and the flip baffle (33) is an L-shaped plate arranged closely against the welding workbench (1).

4. The welding device for partial connection of automobile sheet metal parts according to claim 3, characterized in that: Two longitudinally symmetrical steering installation grooves (34) are provided on one side of the upper surface of the welding workbench (1); the lateral welding assembly comprises two symmetrically arranged disc steering seats (35); the disc steering seats (35) are rotatably mounted in the steering installation grooves (34) and are arranged closely against the inner bottom surface of the steering installation grooves (34); Two symmetrical steering drive motors (36) are respectively fixedly connected to two steering mounting grooves (34) corresponding to one side of the lower surface of the welding workbench (1), and the output shaft ends of the steering drive motors (36) pass through the welding workbench (1) upwards and are fixedly connected to the center of the lower surface of the disc steering seat (35).

5. The welding device for partial connection of automobile sheet metal parts according to claim 4, characterized in that: A vertical hydraulic telescopic cylinder (37) is fixedly connected to the center of the upper surface of each disc steering seat (35), and a horizontal lateral welding gun (38) is fixedly connected to the upper telescopic end of the hydraulic telescopic cylinder (37).

Images