An automobile sheet metal part welding support device

Abstract

The application relates to the technical field of automobile manufacturing, and discloses a welding support device for automobile sheet metal parts, which comprises a layout base, a main hole position positioning support is arranged on the top of the layout base, a main clamping positioning support is arranged on the left side of the main hole position positioning support, and a clamping welding assembly is arranged on the left side of the main clamping positioning support. The bottom welding electrode is moved upward through the operation of the bottom telescopic rod, the bottom welding electrode is in contact with the main sheet metal, the top welding electrode is moved downward through the operation of the top telescopic rod, the top welding electrode is in contact with the auxiliary sheet metal, the top welding electrode and the bottom welding electrode are electrified, heat generated by the current at the contact point melts the main sheet metal and the auxiliary sheet metal, and the main sheet metal and the auxiliary sheet metal are solidified under the pressure of the top telescopic rod and the bottom telescopic rod to form welding points, at this time, the main sheet metal and the auxiliary sheet metal are preliminarily welded, and the problems that the existing support device cannot clamp the main sheet metal and the auxiliary sheet metal for welding immediately, and the mechanical hand carrying the spot welding device needs to consume time during movement and leads to low efficiency are solved.

Description

Technical Field

[0001] This invention relates to the field of automobile manufacturing technology, specifically to a welding support device for automobile sheet metal parts. Background Technology

[0002] In automobile body manufacturing, welding is extensively used to connect multiple stamped sheet metal parts to form complex body structures such as doors, side panels, and floor panels. These sheet metal parts typically have complex curved surfaces and thin-walled structures, making them prone to deformation, misalignment, or vibration during welding, especially in robotic automated welding processes, due to their own weight, welding thermal stress, or the clamping force of the fixtures. This leads to decreased welding precision, affecting the stability of the vehicle body dimensions and welding quality, and in severe cases, even causing product scrap. Welding support devices, as crucial auxiliary equipment in the sheet metal welding process, play a decisive role in the convenience of welding operations, positioning accuracy, and final weld quality.

[0003] Existing support devices cannot immediately clamp and weld the main sheet metal and the secondary sheet metal. After the main sheet metal and the secondary sheet metal are in contact, they are clamped by a fixture, and then a robotic arm carrying a spot welding device is used to weld the main sheet metal and the secondary sheet metal. The robotic arm takes time to move, and when space is limited, manual welding is required, resulting in low welding efficiency. Summary of the Invention

[0004] This invention provides a welding support device for automotive sheet metal parts, which solves the problems mentioned in the background art.

[0005] The present invention provides the following technical solution: a welding support device for automotive sheet metal parts, including a layout base, a main hole positioning bracket installed on the top of the layout base, a main clamping positioning bracket provided on the left side of the main hole positioning bracket, a clamping welding component provided on the left side of the main clamping positioning bracket, an arc-shaped support component provided at the front end of the main clamping positioning bracket, a secondary hole positioning bracket installed on the left side of the main clamping positioning bracket, and a secondary clamping positioning bracket installed on the left side of the secondary hole positioning bracket.

[0006] The clamping welding assembly includes a mounting base, a clamping cylinder fixedly mounted on the outer edge of the mounting base, a movable claw mounted on the power output shaft of the clamping cylinder, a top clamping claw mounted on the bottom of the movable claw, a bottom clamping claw mounted on the top of the mounting base, a top telescopic rod mounted on the top of the top clamping claw, a top welding electrode mounted on the power output shaft of the top telescopic rod, the top welding electrode being located in the inner cavity of the top clamping claw, and a bottom telescopic rod mounted on the bottom of the bottom clamping claw, the bottom welding electrode being located in the inner cavity of the bottom clamping claw.

[0007] The bottom of the top clamping claw is provided with a top air chamber, and the inner wall of the top air chamber is provided with a number of top air inlet oblique holes, which are evenly distributed on the top clamping claw. A top sealing contact ring is installed on the inner wall of the top air chamber, and a top air inlet pipe passes through the inner cavity of the top air chamber.

[0008] The top clamping claw corresponds to the bottom clamping claw, and the bottom clamping claw is located below the top clamping claw. The top of the bottom clamping claw is provided with a bottom air chamber, the inner wall of the bottom air chamber is provided with a bottom air inlet oblique hole, the inner wall of the bottom air chamber is equipped with a bottom sealing contact ring, and the inner cavity of the bottom air chamber is penetrated by a bottom air inlet pipe.

[0009] The arc-shaped support assembly includes a support base, a movable seat is installed in the inner cavity of the support base, a movable screw is provided in the inner cavity of the movable seat, a connecting block is movably sleeved on the outer edge of the movable screw, a deformable stainless steel plate is fixedly assembled on the outer wall of the connecting block, movable rods are installed at both ends of the deformable stainless steel plate, a fixed cylinder is slidably connected to the outer edge of the movable rod, a connecting bracket is movably connected to the inner wall of the fixed cylinder, and the connecting bracket is fixedly assembled on the movable seat.

[0010] As a preferred embodiment of the present invention, the outer wall of the top clamping claw is provided with a top air outlet oblique hole, which penetrates the top clamping claw.

[0011] As a preferred embodiment of the present invention, the outer wall of the bottom clamping claw is provided with a bottom air outlet oblique hole, which penetrates the bottom clamping claw.

[0012] As a preferred embodiment of the present invention, both the top sealing contact ring and the bottom sealing contact ring are made of high-temperature resistant rubber. The bottom of the top sealing contact ring and the bottom of the top clamping claw are not on the same plane, and the bottom of the top sealing contact ring protrudes beyond the bottom of the top clamping claw. The top of the bottom air chamber and the top of the bottom clamping claw are not on the same plane, and the top of the bottom sealing contact ring protrudes beyond the top of the bottom clamping claw.

[0013] As a preferred embodiment of the present invention, a support spring is movably sleeved on the outer edge of the movable rod, and the end of the movable rod away from the deformable stainless steel plate contacts the inner wall of the fixed cylinder near the connecting bracket.

[0014] As a preferred embodiment of the present invention, the outer edge of the movable screw is threadedly connected to an internally threaded cylinder, the outer wall of the internally threaded cylinder is fixedly fitted with a rotating disk, the outer wall of the rotating disk is movably sleeved with a positioning hoop, and the positioning hoop is fixedly fitted on a movable seat.

[0015] As a preferred embodiment of the present invention, a fixing nut is installed on the outer wall of the support base, and a fixing bolt passes through the inner cavity of the support base and the movable seat, and the fixing bolt is threadedly connected to the fixing nut.

[0016] The present invention has the following beneficial effects:

[0017] 1. This automotive sheet metal welding support device moves the bottom welding electrode upwards via the movement of the bottom telescopic rod, bringing it into contact with the main sheet metal. Simultaneously, the top telescopic rod moves the top welding electrode downwards, bringing it into contact with the secondary sheet metal. When the top and bottom welding electrodes are energized, the heat generated at the contact point melts the main and secondary sheet metal, which then solidifies under the pressure of the top and bottom telescopic rods, forming a weld point. At this point, the main and secondary sheet metal are initially welded. This solves the problem of existing support devices being unable to immediately clamp and weld the main and secondary sheet metal, and the low efficiency caused by the time consumed during the movement of the robotic arm carrying the spot welding device.

[0018] 2. This automotive sheet metal welding support device, through the setting of a top air chamber and a bottom air chamber, allows gas to enter the top air chamber through the top air intake pipe, and then the gas in the top air chamber is discharged through the top air intake oblique hole. Similarly, gas enters the bottom air chamber through the bottom air intake pipe, and then the gas in the bottom air chamber is discharged through the bottom air intake oblique hole. This allows both the bottom of the main sheet metal and the top of the secondary sheet metal to be cooled, thereby improving the tensile strength and shear strength of the weld joint.

[0019] 3. This automotive sheet metal welding support device, through the setting of deformable stainless steel plate, allows the deformable stainless steel plate to deform when the moving screw moves towards the movable seat, gradually increasing the curvature of the deformable stainless steel plate. The deformable stainless steel plate can fit and support the sheet metal with outward protrusion. When the moving screw moves in the opposite direction to the movable seat, the curvature of the deformable stainless steel plate changes, causing the deformable stainless steel plate to protrude outward. The outward protrusion of the deformable stainless steel plate can support the sheet metal with inward concave curvature. The support mechanism of this device can flexibly support sheet metal with both protruding and concave curvatures. Attached Figure Description

[0020] Figure 1 This is a frontal perspective view of the present invention;

[0021] Figure 2 This is a three-dimensional structural diagram of the back of the present invention;

[0022] Figure 3 This is a schematic diagram of the clamping and welding assembly structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the top clamping claw and bottom clamping claw structure of the present invention;

[0024] Figure 5 This is a schematic diagram of the cross-sectional structure of the top clamping claw and the bottom clamping claw of the present invention;

[0025] Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A in the diagram;

[0026] Figure 7 This is a schematic diagram of the unfolded structure of the top clamping claw and the bottom clamping claw of the present invention;

[0027] Figure 8 This is a schematic diagram of the front structure of the arc-shaped support component of the present invention;

[0028] Figure 9 This is a schematic diagram of the back structure of the arc-shaped support component of the present invention;

[0029] Figure 10 This is a schematic cross-sectional view of the arc-shaped support component of the present invention.

[0030] In the diagram: 1. Layout base; 2. Main hole positioning bracket; 3. Main clamping positioning bracket; 4. Clamping and welding assembly; 5. Arc-shaped support assembly; 6. Secondary hole positioning bracket; 7. Secondary clamping positioning bracket;

[0031] 401. Mounting base; 402. Clamping cylinder; 403. Movable claw; 404. Top clamping claw; 405. Bottom clamping claw; 406. Top telescopic rod; 407. Top welding pole; 408. Bottom telescopic rod; 409. Bottom welding pole; 410. Top air chamber; 411. Top sealing contact ring; 412. Top air inlet oblique hole; 413. Top air outlet oblique hole; 414. Top air inlet pipe; 415. Bottom air chamber; 416. Bottom sealing contact ring; 417. Bottom air inlet oblique hole; 418. Bottom air outlet oblique hole; 419. Bottom air inlet pipe;

[0032] 501. Support base; 502. Movable seat; 503. Moving screw; 504. Connecting block; 505. Deformed stainless steel plate; 506. Movable rod; 507. Fixed cylinder; 508. Support spring; 509. Connecting bracket; 510. Internal threaded cylinder; 511. Rotary disk; 512. Positioning clamp; 513. Fixed nut; 514. Fixed bolt. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Please see Figures 1-10 A welding support device for automotive sheet metal parts includes a layout base 1, a main hole positioning bracket 2 installed on the top of the layout base 1, a main clamping positioning bracket 3 provided on the left side of the main hole positioning bracket 2, a clamping welding component 4 provided on the left side of the main clamping positioning bracket 3, an arc-shaped support component 5 provided at the front end of the main clamping positioning bracket 3, a secondary hole positioning bracket 6 installed on the left side of the main clamping positioning bracket 3, and a secondary clamping positioning bracket 7 installed on the left side of the secondary hole positioning bracket 6.

[0035] In the above structure, the main hole positioning bracket 2 can be used to position the main sheet metal through holes. The holes on the main sheet metal can be placed on the main hole positioning bracket 2. The main clamping positioning bracket 3 can reposition and clamp the main sheet metal. The arc-shaped support component 5 can position the curved side of the sheet metal. The secondary hole positioning bracket 6 can be used to position the secondary sheet metal through holes. The holes on the secondary sheet metal can be placed on the secondary hole positioning bracket 6. Then, the secondary clamping positioning bracket 7 can reposition and clamp the secondary sheet metal. The overlapping area of ​​the main sheet metal and the secondary sheet metal is clamped by the clamping welding component 4 before initial welding.

[0036] The clamping welding assembly 4 includes a mounting base 401. A clamping cylinder 402 is fixedly mounted on the outer edge of the mounting base 401. A movable claw 403 is mounted on the power output shaft of the clamping cylinder 402. A top clamping claw 404 is mounted on the bottom of the movable claw 403. A bottom clamping claw 405 is mounted on the top of the mounting base 401. A top telescopic rod 406 is mounted on the top of the top clamping claw 404. A top welding pole 407 is mounted on the power output shaft of the top telescopic rod 406. The top welding pole 407 is located in the inner cavity of the top clamping claw 404. A bottom telescopic rod 408 is mounted on the bottom of the bottom clamping claw 405. A bottom welding pole 409 is mounted on the power output shaft of the bottom telescopic rod 408. The bottom welding pole 409 is located in the inner cavity of the bottom clamping claw 405.

[0037] In the above structure, the clamping cylinder 402 drives the movable claw 403 to rotate, causing the top clamping claw 404 to contact the secondary sheet metal and the main sheet metal to contact the bottom clamping claw 405. The top clamping claw 404 and the bottom clamping claw 405 clamp the main sheet metal and the secondary sheet metal. Then, the bottom telescopic rod 408 moves the bottom welding electrode 409 upward, causing the bottom welding electrode 409 to contact the main sheet metal. The top telescopic rod 406 moves the top welding electrode 407 downward, causing the top welding electrode 407 to contact the secondary sheet metal. The top welding electrode 407 and the bottom welding electrode 409 are energized, and the heat generated at the contact point melts the main sheet metal and the secondary sheet metal. Under the pressure of the top telescopic rod 406 and the bottom telescopic rod 408, the melted material solidifies to form a weld point, thus completing the initial welding of the main sheet metal and the secondary sheet metal. The initial welding can improve the stability of the main sheet metal and the secondary sheet metal during subsequent transfer.

[0038] The bottom of the top clamping claw 404 is provided with a top air chamber 410. The inner wall of the top air chamber 410 is provided with a number of top air inlet oblique holes 412, and the number of top air inlet oblique holes 412 are evenly distributed on the top clamping claw 404. The inner wall of the top air chamber 410 is equipped with a top sealing contact ring 411, and the inner cavity of the top air chamber 410 is penetrated by a top air inlet pipe 414.

[0039] In the above structure, gas enters the top air chamber 410 through the top air inlet pipe 414, and then the gas in the top air chamber 410 is discharged through the top air inlet inclined hole 412. Since the top air inlet inclined hole 412 faces the bottom clamping claw 405, the welding point on the bottom clamping claw 405 can be blown with air. The gas can cool the welding point. Rapid cooling can significantly improve the tensile strength and shear strength of the welding point, and it can better withstand external forces such as vibration and impact.

[0040] The top clamping claw 404 corresponds to the bottom clamping claw 405. The bottom clamping claw 405 is located below the top clamping claw 404. The bottom clamping claw 405 has a bottom air chamber 415 at its top. The bottom air chamber 415 has a bottom air inlet oblique hole 417 on its inner wall. The bottom sealing contact ring 416 is installed on the inner wall of the bottom air chamber 415. The bottom air inlet pipe 419 passes through the inner cavity of the bottom air chamber 415.

[0041] In the above structure, gas enters the bottom air chamber 415 through the bottom air inlet pipe 419, and then the gas in the bottom air chamber 415 is discharged through the bottom air inlet oblique hole 417. Since the bottom air inlet oblique hole 417 faces the top clamping claw 404, the welding point on the top clamping claw 404 can be blown with air. The gas can cool the welding point. When welding sheet metal parts, high temperature will cause local thermal expansion. Uneven contraction during natural cooling can easily cause deformation. Timely cooling can control the range of heat-affected zone, reduce the difference in thermal expansion and contraction, reduce the deformation of sheet metal parts, and reduce the workload of subsequent correction processes.

[0042] The arc-shaped support assembly 5 includes a support base 501, a movable seat 502 installed in the inner cavity of the support base 501, a movable screw 503 provided in the inner cavity of the movable seat 502, a connecting block 504 movably sleeved on the outer edge of the movable screw 503, a deformable stainless steel plate 505 fixedly mounted on the outer wall of the connecting block 504, movable rods 506 installed at both ends of the deformable stainless steel plate 505, a fixed cylinder 507 slidably connected to the outer edge of the movable rod 506, a connecting bracket 509 movably connected to the inner wall of the fixed cylinder 507, and the connecting bracket 509 fixedly mounted on the movable seat 502.

[0043] In the above structure, by setting the deformable stainless steel plate 505, when the moving screw 503 moves towards the movable seat 502, the deformable stainless steel plate 505 can be deformed, causing the curvature of the deformable stainless steel plate 505 to gradually increase. This allows the deformable stainless steel plate 505 to fit and support the sheet metal with an outwardly protruding curvature. When the moving screw 503 moves in the opposite direction to the movable seat 502, the curvature of the deformable stainless steel plate 505 changes, causing the deformable stainless steel plate 505 to protrude outward. The outwardly protruding deformable stainless steel plate 505 can support the sheet metal with an inwardly concave curvature. When both ends of the deformable stainless steel plate 505 are... When the middle part is on the same plane, the flat sheet metal can be supported and positioned, which improves the flexibility of the device. When the moving screw 503 moves towards the movable seat 502, the distance between the two ends of the deformed stainless steel plate 505 will gradually decrease. The movable rods 506 and the fixed cylinder 507 at both ends rotate on the connecting bracket 509. Gradually, the movable rod 506 slides in the fixed cylinder 507, and the length of the movable rod 506 and the fixed cylinder 507 increases. When the moving screw 503 moves in the opposite direction to the movable seat 502, the changes in the movable rod 506 and the fixed cylinder 507 are the same as when the moving screw 503 moves towards the movable seat 502.

[0044] In a preferred embodiment: the outer wall of the top clamping claw 404 is provided with a top air outlet oblique hole 413, which penetrates the top clamping claw 404.

[0045] In the above structure, the gas in contact with the sheet metal will bounce upward through the top venting oblique hole 413, and the rebounding gas will be discharged through the top venting oblique hole 413, so that the heat in the top clamping claw 404 can be carried out, which improves the rationality of the device.

[0046] In a preferred embodiment: the outer wall of the bottom clamping claw 405 is provided with a bottom air outlet oblique hole 418, which penetrates the bottom clamping claw 405.

[0047] In the above structure, by setting the bottom vent angled hole 418, the gas in contact with the sheet metal will rebound downwards, and the rebounding gas will be discharged through the bottom vent angled hole 418, so that the heat in the bottom clamping claw 405 can be carried out, improving the rationality of the device.

[0048] In a preferred embodiment: both the top sealing contact ring 411 and the bottom sealing contact ring 416 are made of high-temperature resistant rubber. The bottom of the top sealing contact ring 411 and the bottom of the top clamping claw 404 are not on the same plane. The bottom of the top sealing contact ring 411 protrudes from the bottom of the top clamping claw 404. The top of the bottom air chamber 415 and the top of the bottom clamping claw 405 are not on the same plane. The top of the bottom sealing contact ring 416 protrudes from the top of the bottom clamping claw 405.

[0049] In the above structure, the top sealing contact ring 411 protrudes from the top clamping claw 404 and the bottom sealing contact ring 416 protrudes from the bottom clamping claw 405, allowing the top sealing contact ring 411 and the bottom sealing contact ring 416 to contact the sheet metal. Since the materials of the top sealing contact ring 411 and the bottom sealing contact ring 416 are relatively soft, they can contact the surface of the sheet metal. At the same time, thermal expansion will occur during the welding of the main sheet metal and the sub-sheet metal. At this time, the main sheet metal and the sub-sheet metal have a space for thermal expansion buffer, which improves the rationality of the welding of the main sheet metal and the sub-sheet metal.

[0050] In a preferred embodiment: a support spring 508 is movably sleeved on the outer edge of the movable rod 506, and the end of the movable rod 506 away from the deformable stainless steel plate 505 contacts the inner wall of the fixed cylinder 507 near the connecting bracket 509.

[0051] In the above structure, by setting the support spring 508, when the length of the movable rod 506 and the fixed cylinder 507 increases, the elastic force of the support spring 508 supports the movable rod 506 and the fixed cylinder 507, so that the two ends of the deformable stainless steel plate 505 are in a taut state. Only then can the deformable stainless steel plate 505 stably form an arc shape, thus improving the rationality of the device.

[0052] In a preferred embodiment: the outer edge of the movable screw 503 is threadedly connected to an internal threaded cylinder 510, the outer wall of the internal threaded cylinder 510 is fixedly fitted with a rotating disk 511, the outer wall of the rotating disk 511 is movably sleeved with a positioning hoop 512, and the positioning hoop 512 is fixedly fitted on the movable seat 502.

[0053] In the above structure, the rotating disk 511 drives the internal threaded cylinder 510 to rotate. When the internal threaded cylinder 510 rotates, it can drive the moving screw 503 to move. Only when the moving screw 503 moves can the deformable stainless steel plate 505 be deformed. With the setting of the positioning clamp 512, the positioning clamp 512 can limit the rotating disk 511, so that the rotating disk 511 can only rotate. Only when the rotating disk 511 rotates can the moving screw 503 move, which improves the rationality of the device.

[0054] In a preferred embodiment: a fixing nut 513 is installed on the outer wall of the support base 501, and a fixing bolt 514 passes through the inner cavity of the support base 501 and the movable seat 502, and the fixing bolt 514 is threadedly connected to the fixing nut 513.

[0055] In the above structure, the angle of the deformable stainless steel plate 505 can be adjusted by the movable connection between the support base 501 and the movable seat 502. The deformable stainless steel plate 505 can support the plate on the side slope, which improves the flexibility of the device. After the angle of the movable seat 502 is adjusted, the connection between the movable seat 502 and the support base 501 is fixed by turning the fixing bolt 514.

[0056] Working principle: During use, the main sheet metal is placed on the main hole positioning bracket 2 and the main clamping positioning bracket 3. At this time, the arc-shaped support component 5 is in contact with the main sheet metal. Then, the secondary sheet metal is placed on the secondary hole positioning bracket 6 and the secondary clamping positioning bracket 7. The secondary hole positioning bracket 6 and the secondary clamping positioning bracket 7 position and clamp the secondary sheet metal. The main clamping positioning bracket 3 clamps and positions the main sheet metal. Subsequently, the clamping cylinder 402 runs, driving the movable claw 403 to rotate. At this time, the main sheet metal is located on top of the bottom clamping claw 405. Gradually, the top clamping claw 404 comes into contact with the secondary sheet metal on the main sheet metal. The top clamping claw 404 and the bottom clamping claw 405 clamp the main sheet metal. The main sheet metal is clamped together with the secondary sheet metal. Then, the bottom telescopic rod 408 moves the bottom welding electrode 409 upwards, bringing it into contact with the main sheet metal. The top telescopic rod 406 moves the top welding electrode 407 downwards, bringing it into contact with the secondary sheet metal. When the top welding electrode 407 and the bottom welding electrode 409 are energized, the heat generated at the contact point melts the main and secondary sheet metal, which then solidifies under the pressure of the top and bottom telescopic rods 406 and 408, forming a weld point. At this point, the main and secondary sheet metals have completed the initial welding. After the initial welding is completed, the sheet metal is picked up by a robotic arm and transferred to a fixed welding machine for final multi-point welding. When encountering curved sheet metal... When support and blocking are required, after welding, the gas enters the top air chamber 410 through the top air inlet pipe 414, and then the gas in the top air chamber 410 is discharged through the top air inlet inclined hole 412. The gas enters the bottom air chamber 415 through the bottom air inlet pipe 419, and then the gas in the bottom air chamber 415 is discharged through the bottom air inlet inclined hole 417, so that the bottom of the main sheet metal and the top of the secondary sheet metal can be cooled. By rotating the rotating disk 511, the moving screw 503 is moved. The moving screw 503 moves towards the movable seat 502. The movement of the moving screw 503 can change the curvature of the deformed stainless steel plate 505, so that the deformed stainless steel plate 505... 5. As the inward curvature increases, when the rotating disk 511 is rotated in the opposite direction, the moving screw 503 can move towards the movable seat 502. At this time, the deformed stainless steel plate 505 protrudes outward, which can support and position the plate with the concave curvature. By loosening the fixing bolt 514, the movable seat 502 and the support base 501 can move together, and the angle of the deformed stainless steel plate 505 can be adjusted. After the angle of the deformed stainless steel plate 505 is adjusted to a suitable position, the fixing bolt 514 can be tightened. If the fixing bolt 514 cannot be tightened, it means that the support base 501 and the movable seat 502 are fixed, and the movable seat 502 cannot rotate at this time.

[0057] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0058] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automobile sheet metal part welding support device comprising a layout base (1), characterized in that: The top of the layout base (1) is equipped with a main hole positioning bracket (2), the left side of the main hole positioning bracket (2) is provided with a main clamping positioning bracket (3), the left side of the main clamping positioning bracket (3) is provided with a clamping welding assembly (4), the front end of the main clamping positioning bracket (3) is provided with an arc-shaped support assembly (5), the left side of the main clamping positioning bracket (3) is equipped with a secondary hole positioning bracket (6), and the left side of the secondary hole positioning bracket (6) is equipped with a secondary clamping positioning bracket (7). The clamping welding assembly (4) includes a mounting base (401), a clamping cylinder (402) is fixedly mounted on the outer edge of the mounting base (401), a movable claw (403) is mounted on the power output shaft of the clamping cylinder (402), a top clamping claw (404) is mounted on the bottom of the movable claw (403), a bottom clamping claw (405) is mounted on the top of the mounting base (401), a top telescopic rod (406) is mounted on the top of the top clamping claw (404), a top welding pole (407) is mounted on the power output shaft of the top telescopic rod (406), the top welding pole (407) is located in the inner cavity of the top clamping claw (404), a bottom telescopic rod (408) is mounted on the bottom of the bottom clamping claw (405), a bottom welding pole (409) is mounted on the power output shaft of the bottom telescopic rod (408), and the bottom welding pole (409) is located in the inner cavity of the bottom clamping claw (405). The top clamping claw (404) has a top air chamber (410) at its bottom. The inner wall of the top air chamber (410) has a plurality of top air inlet oblique holes (412), and the plurality of top air inlet oblique holes (412) are evenly distributed on the top clamping claw (404). The inner wall of the top air chamber (410) is equipped with a top sealing contact ring (411), and the inner cavity of the top air chamber (410) is penetrated by a top air inlet pipe (414). The top clamping claw (404) corresponds to the bottom clamping claw (405). The bottom clamping claw (405) is located below the top clamping claw (404). The bottom clamping claw (405) has a bottom air chamber (415) at its top. The bottom air chamber (415) has a bottom air inlet oblique hole (417) on its inner wall. The bottom air chamber (415) has a bottom sealing contact ring (416) installed on its inner wall. The bottom air inlet pipe (419) passes through the inner cavity of the bottom air chamber (415). The arc-shaped support assembly (5) includes a support base (501), a movable seat (502) is installed in the inner cavity of the support base (501), a movable screw (503) is provided in the inner cavity of the movable seat (502), a connecting block (504) is movably sleeved on the outer edge of the movable screw (503), a deformable stainless steel plate (505) is fixedly assembled on the outer wall of the connecting block (504), movable rods (506) are installed at both ends of the deformable stainless steel plate (505), a fixed cylinder (507) is slidably connected to the outer edge of the movable rod (506), a connecting bracket (509) is movably connected to the inner wall of the fixed cylinder (507), and the connecting bracket (509) is fixedly assembled on the movable seat (502).

2. The device according to claim 1, characterized in that: The outer wall of the top clamping claw (404) is provided with a top air outlet oblique hole (413), which penetrates the top clamping claw (404).

3. The device according to claim 1, characterized in that: The bottom clamping claw (405) has a bottom air outlet oblique hole (418) on its outer wall, and the bottom air outlet oblique hole (418) passes through the bottom clamping claw (405).

4. The welding support device for automotive sheet metal parts according to claim 1, characterized in that: The top sealing contact ring (411) and the bottom sealing contact ring (416) are both made of high-temperature resistant rubber. The bottom of the top sealing contact ring (411) and the bottom of the top clamping claw (404) are not on the same plane. The bottom of the top sealing contact ring (411) protrudes from the bottom of the top clamping claw (404). The top of the bottom air chamber (415) and the top of the bottom clamping claw (405) are not on the same plane. The top of the bottom sealing contact ring (416) protrudes from the top of the bottom clamping claw (405).

5. The device according to claim 1, characterized in that: The outer edge of the movable rod (506) is movably sleeved with a support spring (508), and the end of the movable rod (506) away from the deformed stainless steel plate (505) is in contact with the inner wall of the fixed cylinder (507) near the connecting bracket (509).

6. The device according to claim 1, characterized in that: The outer edge of the movable screw (503) is threadedly connected to an internal threaded cylinder (510). A rotating disk (511) is fixedly mounted on the outer wall of the internal threaded cylinder (510). A positioning hoop (512) is movably sleeved on the outer wall of the rotating disk (511). The positioning hoop (512) is fixedly mounted on the movable seat (502).

7. The device according to claim 1, characterized in that: A fixing nut (513) is installed on the outer wall of the support base (501), and a fixing bolt (514) passes through the inner cavity of the support base (501) and the movable seat (502). The fixing bolt (514) is threadedly connected to the fixing nut (513).

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