Metal plate butt welding device

Abstract

The present invention discloses a metal plate butt welding device, belonging to the field of welding technology, comprising a body, a first mounting frame, a second mounting frame, and a welding gun. The device uses positioning rollers and abutting rollers to position and clamp the metal plates. The second mounting frame can rotate about a positioning line to accommodate the butting of the metal plates at different angles. The welding gun and the second mounting frame move synchronously via a linkage mechanism, ensuring that the welding gun is always positioned on the angle bisector of the two metal plates, preventing weld deviation. The device offers advantages such as easy operation and high welding quality, making it suitable for metal plate butt welding.

Description

Technical Field

[0001] The invention relates to the technical field of welding, and in particular to a metal plate butt welding device. Background Art

[0002] In the metalworking industry, butt welding of metal plates is a common joining process, widely used in automotive, construction, and machinery manufacturing. Conventional butt welding devices often suffer from issues such as inaccurate positioning, uneven clamping force, and weld seam offset, severely impacting welding quality and production efficiency. To address these issues, there is an urgent need for a welding device that can accurately position and stably clamp metal plates while preventing weld seam offset during welding.

[0003] The metal plate butt welding device provided in this embodiment is designed precisely to meet the above-mentioned technical requirements. Through the ingenious design of positioning rollers and abutting rollers, the device achieves precise positioning and stable clamping of the metal plates. At the same time, the second mounting bracket can rotate around the positioning line to accommodate the needs of butting metal plates at different angles. Furthermore, the linkage mechanism between the welding gun and the second mounting bracket further ensures the accurate positioning of the welding gun during the welding process, avoiding the problem of weld offset. These innovative designs not only improve welding quality and production efficiency, but also reduce operational difficulty and labor costs, and have significant market application value. Summary of the Invention

[0004] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide a metal plate butt welding device that can butt two metal plates together and perform welding operations on them.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solution: The present invention provides a metal plate butt welding device, comprising a body, on which is mounted:

[0006] a first mounting frame and a second mounting frame for mounting two metal plates, wherein the first mounting frame and the second mounting frame are each provided with a plurality of positioning rollers and a plurality of abutting rollers, wherein the positioning rollers and the abutting rollers are capable of clamping the corresponding metal plates; an opening for removing the metal plates is provided on one side of the first mounting frame and the second mounting frame; a positioning line is provided between the first mounting frame and the second mounting frame; when the two metal plates are butt-jointed, the connection position of the upper surfaces of the two metal plates coincides with the positioning line;

[0007] A welding gun is mounted on the machine body, with its end facing the positioning line and capable of moving along the length of the positioning line to perform welding work on the two metal plates;

[0008] The second mounting frame can rotate around the positioning line so that the plate installed inside the first mounting frame is arranged horizontally, and the metal plate installed inside the second mounting frame is tilted upward from the positioning line at a preset angle.

[0009] Preferably, when the two metal plates are in the same plane, the welding gun will be perpendicular to the two metal plates and move along the plane containing the positioning line. If the two metal plates are arranged at an angle, the welding gun will move along the angle bisector formed by the two metal plates, while ensuring that the end of the welding gun always points to the positioning line.

[0010] Preferably, a drive box is fixed to the rear side of the body, a first drive arm is fixed to the bottom of the second mounting frame, the first drive arm is an arc plate with the positioning line as the axis, the first drive arm is provided with teeth, and a first gear is rotatably installed inside the drive box to engage with the teeth on the second drive arm.

[0011] Preferably, the welding gun is fixed on a connecting arm, a second driving arm is fixed to the lower end of the connecting arm, the second driving arm is an arc plate with the positioning line as the axis, the second driving arm is provided with teeth, and a third gear is rotatably installed inside the driving box and meshes with the teeth on the second driving arm.

[0012] Preferably, a second gear is rotatably installed inside the drive box, the second gear is engaged with the teeth on the first drive arm, and the second gear is also engaged with the third gear, and the gear ratio between the second gear and the third gear is 1 to 2.

[0013] Preferably, the first mounting frame and the second mounting frame both include a side plate installed on one side, and the plurality of positioning rollers are rotatably installed on the side plate along a straight line direction. A pressing box is slidably installed inside the first mounting frame and the second mounting frame, and the plurality of pressing rollers are rotatably installed inside the pressing box along a straight line direction, and some of the pressing rollers extend to the outside of the pressing box.

[0014] Preferably, a pressure plate is slidably installed inside the first mounting bracket and the second mounting bracket, an elastic body is connected between the pressure plate and the tight box, a first oil cylinder is fixed to the bottom of the first mounting bracket and the second mounting bracket, and the output end of the first oil cylinder is connected to the pressure plate.

[0015] Preferably, a plurality of guide bars are fixed to the bottom of the second mounting frame, wherein the guide bars are arc bars with the positioning line as the axis, and the interior of the machine body is provided with guide grooves adapted to the guide bars.

[0016] Preferably, a support plate is fixed on the connecting arm, a slide is slidably mounted on the inner side of the support plate, a second oil cylinder for driving the slide to slide is fixed on the support plate, and the welding gun is fixed on the slide.

[0017] The beneficial effects of the present invention are:

[0018] The combination of positioning and holding rollers not only ensures stable clamping of the metal sheets during welding but also enables precise positioning of the upper surface of the metal sheets. The second mounting bracket can rotate about the positioning line, allowing the metal sheets mounted within the first and second mounting brackets to be butted and welded at various angles. This flexibility expands the application range of the welding device.

[0019] The welding gun automatically adjusts its position based on the layout of the metal sheets (flat or angled), ensuring it remains centered between the two sheets. This design effectively prevents weld seam deviation and improves weld quality. Precisely controlling the welding gun's position and movement path prevents it from contacting other parts of the welding apparatus during welding, thereby protecting the integrity and safety of the welding apparatus. A gear system within the drive box enables coordinated control of the welding gun and the secondary mounting bracket.

[0020] An opening is provided on one side of the first mounting frame and the second mounting frame so that the metal plate after welding can be conveniently taken out from the opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of the welding device.

[0022] Figure 2 for Figure 1 A in the enlarged view.

[0023] Figure 3 This is an internal cross-sectional view of the drive box.

[0024] Figure 4 Schematic diagram of the structure of the second mounting frame.

[0025] Figure 5 1 is an internal cross-sectional view of the second mounting bracket.

[0026] Figure 6 A side view of the welding device.

[0027] Figure 7 This is a connection diagram of two metal plates on the same plane.

[0028] Figure 8 This is a diagram of the connection between two metal plates arranged at an angle.

[0029] In the figure: 1. body, 2. first mounting frame, 3. second mounting frame, 4. welding gun, 5. connecting arm, 6. first driving arm, 7. driving box, 8. first gear, 9. arc slide, 10. second gear, 11. third gear, 12. second driving arm, 13. first oil cylinder, 14. guide bar, 15. support plate, 16. second oil cylinder, 17. positioning roller, 18. side plate, 19. slide plate, 20. tightening box, 21. elastic body, 22. pressure plate, 23. tightening roller. DETAILED DESCRIPTION

[0030] The present invention is described below with specific examples, but is not intended to be limiting of the invention.

[0031] Example 1

[0032] like Figures 1-8 As shown, in this embodiment, a metal plate butt welding device is provided, which includes a body 1 on which a first mounting frame 2 and a second mounting frame 3 for mounting two metal plates and a welding gun 4 are installed.

[0033] The first mounting frame 2 and the second mounting frame 3 are both provided with a plurality of positioning rollers 17 and a plurality of pressing rollers 23. The positioning rollers 17 and the pressing rollers 23 can clamp the corresponding metal plates. The positioning rollers 17 are arranged on the upper part of the first mounting frame 2 and the second mounting frame 3, while the pressing rollers 23 are installed on the lower part. They apply pressure to the metal plates from the bottom up, so that they are tightly attached to the positioning rollers 17. The positioning rollers 17 play a key positioning role here and can effectively and accurately position the upper surface of the metal plates. At the same time, this design not only realizes the clamping function, but also ensures the accurate positioning of the metal plates. An opening for removing the metal plates is provided on one side of the first mounting frame 2 and the second mounting frame 3. The opening is designed to facilitate the removal of the metal plates after welding is completed. When two metal plates are welded together, they may be fixed at a certain angle, making it impossible to remove them directly along the conveying direction of the positioning rollers 17 and the pressing rollers 23. To solve this problem, an opening is deliberately set on one side so that the welded metal plate can be easily taken out from the opening. A positioning line is set between the first mounting frame 2 and the second mounting frame 3. When the two metal plates are docked, the connection position of the upper surfaces of the two metal plates coincides with the positioning line.

[0034] Installed on the machine body 1, the end of the welding gun 4 is facing the positioning line, and the welding gun 4 can move along the length direction of the positioning line to perform welding work on the two metal plates. After moving along the positioning line, the welding gun 4 can weld the two metal plates together.

[0035] The second mounting bracket 3 is capable of rotating about the alignment line, allowing the panels mounted within the first mounting bracket 2 to be arranged horizontally. The metal plates mounted within the second mounting bracket 3 are tilted upward from the alignment line at a preset angle. During the rotation of the second mounting bracket 3, the ends of the plates facing away from the alignment line will tilt upward. Simultaneously, the staff has already prepared incisions in the two metal plates to be welded, these incisions being pre-set based on the anticipated tilt angles of the two plates. Therefore, when the two plates are aligned during welding, their joining surfaces will form a single straight surface, facilitating precise butt-jointing and welding through the incisions.

[0036] Example 2

[0037] like Figures 1-6 As shown, based on the first embodiment, this embodiment provides a linkage mechanism between the welding gun 4 and the second mounting bracket 3, which is specifically as follows:

[0038] When the two metal plates are on the same plane, the welding gun 4 will be perpendicular to the two metal plates and move along the plane containing the positioning line. If the two metal plates are arranged at an angle, the welding gun 4 will move along the angle bisector formed by the two metal plates, while ensuring that the end of the welding gun 4 always points to the positioning line and that the welding gun 4 is always located in the middle of the two metal plates. This middle position can ensure that the welding gun 4 will not deviate to one side during welding. In particular, when the two metal plates are arranged at an angle, locating the welding gun 4 at the angle bisector position can avoid weld deviation and also prevent the welding gun 4 from touching other positions of the welding device.

[0039] A drive box 7 is fixed to the rear side of the body 1, and a first drive arm 6 is fixed to the bottom of the second mounting frame 3. The first drive arm 6 is an arc plate with the positioning line as the axis. The first drive arm 6 is provided with teeth. A first gear 8 that meshes with the teeth on the first drive arm 6 is rotatably installed inside the drive box 7. The first gear 8 in the drive box 7 drives the first drive arm 6 (and the second mounting frame 3) to rotate along the axis of the positioning line by meshing with the teeth on the first drive arm 6.

[0040] The welding gun 4 is fixed on the connecting arm 5, and a second driving arm 12 is fixed to the lower end of the connecting arm 5. The second driving arm 12 is an arc plate with the positioning line as the axis. The interior of the driving box 7 is provided with an arc slide 9 adapted to the second driving arm 12. The second driving arm 12 moves along the arc slide 9. The second driving arm 12 is provided with teeth. A third gear 11 meshing with the teeth on the second driving arm 12 is rotatably installed inside the driving box 7. The third gear 11 in the driving box 7 drives the second driving arm 12 (and the connecting arm 5 and the welding gun 4) to rotate along the positioning line axis by engaging with the teeth on the second driving arm 12, thereby realizing position adjustment of the welding gun 4.

[0041] A second gear 10 is rotatably mounted within the drive box 7. This second gear 10 meshes with the teeth on the first drive arm 6. It also meshes with a third gear 11. The gear ratio between the second and third gears 10 and 11 is 1:2. Acting as an intermediary, the 1:2 gear ratio enables different speeds or displacements between the first drive arm 6 and the second drive arm 12 (i.e., the welding gun 4). This means that when the first drive arm 6 rotates a certain angle, the second drive arm 12 (the welding gun 4) rotates at half the speed or displacement, ensuring that the welding gun 4 remains positioned on the angle bisector of the two metal plates.

[0042] Example 3

[0043] like Figures 1-6 As shown, based on the first and second embodiments, this embodiment provides an internal diagram of the first mounting bracket 2 and the second mounting bracket 3, which are as follows:

[0044] The first mounting frame 2 and the second mounting frame 3 each include a side plate 18 mounted on one side, and a plurality of positioning rollers 17 are mounted on the side plate 18 in a linear direction. A clamping box 20 is slidably mounted inside the first mounting frame 2 and the second mounting frame 3. A plurality of clamping rollers 23 are mounted in a linear direction in the interior of the clamping box 20, and some of the clamping rollers 23 extend to the outside of the clamping box 20. These clamping rollers 23 further clamp the metal plate to prevent it from moving or deforming during the welding process. The metal plate is placed on the positioning rollers 17 and is supported and guided by the positioning rollers 17. The clamping box 20 is mounted inside the first mounting frame 2 and the second mounting frame 3 by sliding, and the clamping rollers 23 inside it clamp the metal plate to ensure the accuracy of the welding position.

[0045] A pressure plate 22 is slidably mounted within the first and second mounting frames 2 and 3. An elastic member 21 is connected between the pressure plate 22 and the abutment box 20. A first oil cylinder 13 is fixed to the bottom of the first and second mounting frames 2 and 3. The output end of the first oil cylinder 13 is connected to the pressure plate 22. When the metal sheet is placed between the positioning roller 17 and the abutment roller 23, the first oil cylinder 13 is activated, pushing the pressure plate 22 to move. The pressure plate 22 is connected to the abutment box 20 via the elastic member 21, and the clamping force is adjusted according to the thickness of the metal sheet. When the appropriate clamping force is reached, the welding process begins.

[0046] A plurality of guide bars 14 are fixed to the bottom of the second mounting frame 3. The guide bars 14 are arc bars with the positioning line as the axis. The interior of the body 1 is provided with guide grooves adapted to the guide bars 14. The guide bars 14 can support the second mounting frame 3 so that the second mounting frame 3 can rotate smoothly along the positioning line.

[0047] A support plate 15 is fixed to the connecting arm 5. A slide plate 19 is slidably mounted on the inner side of the support plate 15. A second oil cylinder 16 is fixed to the support plate 15 to drive the slide plate 19. The welding gun 4 is fixed to the slide plate 19. During the welding process, the second oil cylinder 16 is activated according to the actual position and shape of the metal plate, pushing the slide plate 19 to slide. The welding gun 4 on the slide plate 19 moves accordingly, ensuring the accuracy of the welding position.

[0048] Working principle:

[0049] The metal sheet to be welded is placed between the positioning roller 17 and the abutting roller 23 of the first and second mounting frames 2 and 3, supported and guided by the positioning roller 17. The first oil cylinder 13 is then activated to move the pressure plate 22, which is connected to the abutting box 20 via an elastic member 21. The clamping force is adjusted according to the thickness of the metal sheet. The abutting roller 23 inside the abutting box 20 compresses the metal sheet, ensuring the accuracy of the welding position.

[0050] Depending on the arrangement of the metal plates (plane or angle), when the two metal plates are on the same plane, the welding gun 4 is perpendicular to the metal plates and moves along the plane containing the positioning line; when the two metal plates are arranged at an angle, the welding gun 4 moves along the angle bisector formed by the two metal plates, and ensures that the end of the welding gun 4 always points to the positioning line.

[0051] After the position adjustment of the welding gun 4 is completed, the welding equipment is started to weld the two metal plates. The welding gun 4 moves along the length direction of the positioning line to perform welding work on the two metal plates.

[0052] After welding is completed, the welded metal plate is taken out from the first mounting frame 2 and the second mounting frame 3 through the opening. This design makes the process of taking out the metal plate more convenient.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or replaced by equivalents. Any modification or partial replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A metal plate butt welding device, comprising a body (1), characterized in that: The machine body (1) is equipped with: A first mounting frame (2) and a second mounting frame (3) for mounting two metal plates, wherein a plurality of positioning rollers (17) and a plurality of abutting rollers (23) are provided inside the first mounting frame (2) and the second mounting frame (3), wherein the positioning rollers (17) and the abutting rollers (23) are capable of clamping the corresponding metal plates, an opening for removing the metal plates is provided on one side of the first mounting frame (2) and the second mounting frame (3), and a positioning line is provided between the first mounting frame (2) and the second mounting frame (3), and when the two metal plates are butted, the connection position of the upper surfaces of the two metal plates coincides with the positioning line; A welding gun (4) is mounted on the machine body (1), with the end of the welding gun (4) facing the positioning line, and the welding gun (4) is movable along the length direction of the positioning line to perform welding work on two metal plates; The second mounting frame (3) is capable of rotating around a positioning line, so that the plate installed inside the first mounting frame (2) is arranged horizontally, and the metal plate installed inside the second mounting frame (3) is tilted upward from the positioning line at a preset angle; When the two metal plates are in the same plane, the welding gun (4) will be perpendicular to the two metal plates and move along the plane containing the positioning line, and if the two metal plates are arranged at an angle, the welding gun (4) will move along the angle bisector formed by the two metal plates, while ensuring that the end of the welding gun (4) always points to the positioning line; A drive box (7) is fixed to the rear side of the machine body (1), a first drive arm (6) is fixed to the bottom of the second mounting frame (3), the first drive arm (6) is an arc plate with a positioning line as an axis, the first drive arm (6) is provided with teeth, and a first gear (8) meshing with the teeth on the first drive arm (6) is rotatably installed inside the drive box (7); The welding gun (4) is fixed on the connecting arm (5), and a second driving arm (12) is fixed to the lower end of the connecting arm (5), the second driving arm (12) is an arc plate with a positioning line as an axis, and the second driving arm (12) is provided with teeth, and a third gear (11) meshing with the teeth on the second driving arm (12) is rotatably installed inside the driving box (7); A second gear (10) is rotatably mounted inside the drive box (7), and the second gear (10) is engaged with the teeth on the first drive arm (6). The second gear (10) is also engaged with the third gear (11), and the gear ratio between the second gear (10) and the third gear (11) is 1 to 2.

2. A metal plate butt welding device according to claim 1, characterized in that: The first mounting frame (2) and the second mounting frame (3) both include a side plate (18) mounted on one side, a plurality of positioning rollers (17) are mounted on the side plate (18) in a rotatable manner along a straight line, a pressing box (20) is slidably mounted inside the first mounting frame (2) and the second mounting frame (3), a plurality of pressing rollers (23) are mounted in a rotatable manner inside the pressing box (20) along a straight line, and some of the pressing rollers (23) extend to the outside of the pressing box (20).

3. The metal plate butt welding device according to claim 2, characterized in that: A pressure plate (22) is slidably mounted inside the first mounting frame (2) and the second mounting frame (3), an elastic body (21) is connected between the pressure plate (22) and the abutting box (20), a first oil cylinder (13) is fixed to the bottom of the first mounting frame (2) and the second mounting frame (3), and an output end of the first oil cylinder (13) is connected to the pressure plate (22).

4. The metal plate butt welding device according to claim 1, characterized in that: A plurality of guide bars (14) are fixed to the bottom of the second mounting frame (3), wherein the guide bars (14) are arc bars with the positioning line as the axis, and a guide slot adapted to the guide bars (14) is provided inside the machine body (1).

5. The metal plate butt welding device according to claim 1, characterized in that: A support plate (15) is fixed on the connecting arm (5), a slide plate (19) is slidably mounted on the inner side of the support plate (15), a second oil cylinder (16) for driving the slide plate (19) to slide is fixed on the support plate (15), and the welding gun (4) is fixed on the slide plate (19).

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