Supporting clamp for welding automobile workpieces

Abstract

The utility model relates to the technical field of automobile workpiece welding, and discloses a support fixture for welding automobile workpieces, which comprises a fixed table top, clamping components and a multi-point positioning component, and a support fixture main body consists of the fixed table top and the clamping components arranged on two sides above the fixed table top. By arranging the multi-point positioning assembly, when a workpiece is clamped through the movement of the clamping blocks, the positioning blocks can be driven to be attached to the periphery of the outer wall of the workpiece in a motor driving mode at the moment, and when the workpiece is in an irregular shape, the workpiece can be clamped through the multi-point positioning assembly. When the workpiece is clamped, the positioning block can still be quickly attached to the periphery of the outer wall of the workpiece, and at the moment, the workpiece can be synchronously positioned in the peripheral direction in the clamped state, so that the situation that too large pressure does not need to be applied in the clamping process under the condition that the size of the workpiece is large or irregular can be avoided; and therefore, the attractiveness of the surface of the clamped workpiece is improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive workpiece welding technology, specifically a support fixture for welding automotive workpieces. Background Technology

[0002] With the rapid development of the automotive industry, welding technology for automotive parts has become particularly important. Welding, as an important means of joining metal components, has wide applications in the automotive manufacturing process.

[0003] When welding metal workpieces, it is necessary to fit two sets of metal workpieces tightly together to ensure stability during welding. By using a clamping method, the two sets of workpieces are placed between clamping blocks, and the clamping blocks are moved by a cylinder. During the movement, the two sets of workpieces are clamped, ensuring that the two sets of workpieces are stably supported and fixed by the fixture during the subsequent welding process, avoiding shaking that would reduce welding efficiency.

[0004] Because the clamping is achieved by using two sets of clamping blocks pushed by cylinders, when dealing with large workpieces, it is necessary to increase the pressure between the clamping blocks and the workpiece during the clamping process to achieve stable clamping. When the pressure on the contact part between the clamping blocks and the workpiece increases, the part of the workpiece subjected to pressure is prone to deformation, which affects the appearance of the workpiece. Utility Model Content

[0005] The purpose of this utility model is to provide a support fixture for welding automotive workpieces, in order to solve the problem mentioned in the background art. Because the clamping is achieved by using two sets of clamping blocks pushed by cylinders, when the workpiece size is large, it is necessary to increase the pressure between the clamping blocks and the workpiece during the clamping process to achieve stable clamping. When the pressure at the contact part between the clamping blocks and the workpiece increases, the part of the workpiece subjected to pressure is prone to deformation, thus affecting the appearance of the workpiece.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a support fixture for welding automotive workpieces, comprising: a fixed platform, clamping components, and a multi-point positioning component. The main body of the support fixture consists of a fixed platform and clamping components disposed on both sides above the fixed platform. The number of clamping components is two sets. Each clamping component includes hydraulic cylinders disposed at both ends above the fixed platform, a fixed frame disposed on one side of the output end of the hydraulic cylinders, and a clamping block disposed on the other side of the fixed frame. The inner wall of the fixed frame is provided with through holes and threaded holes around its perimeter. The multi-point positioning component is disposed inside the fixed frame. The multi-point positioning component includes a guide rod slidably connected in the through holes around the fixed frame, a slide rail welded to the bottom end of the guide rod, a slider slidably connected to the slide rail on one side, a toothed block welded to the other side of the slider, a positioning block welded to one end of the slider, a drive motor disposed inside the fixed frame, and a gear disposed on the output end of the drive motor. The gear meshes with the toothed block.

[0007] By adopting the above technical solution, the positioning block can be quickly and evenly positioned around workpieces of different sizes and shapes by means of rotation.

[0008] Preferably, the multi-point positioning component further includes a spring sleeved on the guide rod, with both ends of the spring respectively attached to the outer walls of the fixed frame and the slide rail.

[0009] By adopting the above technical solution, the fitting structure can be moved stably by the compression of the spring.

[0010] Preferably, the multi-point positioning assembly further includes a threaded rod that is rotatably connected to a threaded hole around the fixed frame and a handle fixed to the end of the threaded rod near the outside of the fixed frame.

[0011] By adopting the above technical solution, it is possible to provide a handheld device that can quickly drive the threaded screw to generate rotational displacement.

[0012] Preferably, the threaded screw is located inside the fixed frame, with one end attached to the outer wall of the slide rail.

[0013] By adopting the above technical solution, the rotation of the screw rod can compress the slide rail during the displacement process, ensuring that the slide rail will not be displaced.

[0014] Preferably, the number of gears located at the output end of the drive motor is two sets, one set of gears meshing with two sets of tooth blocks distributed along the "Z" axis, and the other set of gears meshing with two sets of tooth blocks distributed along the "Y" axis.

[0015] By adopting the above technical solution, the rotation of the two sets of gears will not affect the simultaneous movement and displacement of the tooth blocks distributed along the "Z" axis and the tooth blocks distributed along the "Y" axis.

[0016] Preferably, anti-slip pads are adhered to the outer walls of the clamping block and positioning block that contact the workpiece.

[0017] By adopting the above technical solution, an effective anti-slip effect can be achieved during the contact process with the workpiece.

[0018] In summary, this utility model has the following beneficial effects:

[0019] This invention features a multi-point positioning component. When clamping a workpiece by moving the clamping block, the positioning block can be driven by a motor to fit against the outer wall of the workpiece. Even with an irregular workpiece shape, the positioning block can still be quickly fitted against the outer wall. Because the workpiece is simultaneously positioned in all four directions while being clamped, excessive pressure is avoided during clamping when the workpiece is large or irregular in size, thus improving the aesthetic appearance of the workpiece surface after clamping. Attached Figure Description

[0020] Figure 1 This is a three-dimensional top view of the structure of this utility model;

[0021] Figure 2 This is a three-dimensional structural diagram of the clamping component and the multi-point positioning component of this utility model;

[0022] Figure 3 This is a frontal cross-sectional three-dimensional structural diagram of the multi-point positioning component of this utility model;

[0023] Figure 4 This is a side view cross-sectional three-dimensional structural diagram of the multi-point positioning component of this utility model.

[0024] In the picture:

[0025] 1. Fixed work surface;

[0026] 2. Clamping assembly; 201. Hydraulic cylinder; 202. Fixing frame; 203. Clamping block;

[0027] 3. Multi-point positioning components; 301. Guide rod; 302. Slide rail; 303. Slider; 304. Tooth block; 305. Positioning block; 306. Drive motor; 307. Gear; 308. Spring; 309. Threaded screw; 310. Handle. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] The following is in conjunction with the appendix Figure 1-4 The embodiments of this utility model will be described in further detail.

[0030] Example 1:

[0031] Please see Figures 1-4 This embodiment provides a technical solution: a support fixture for welding automotive workpieces, comprising: a fixed table 1, a clamping assembly 2, and a multi-point positioning assembly 3;

[0032] The main body of the support fixture consists of a fixed platform 1 and clamping components 2 arranged on both sides above the fixed platform 1. There are two sets of clamping components 2. Each clamping component 2 includes a hydraulic cylinder 201 arranged at both ends above the fixed platform 1, a fixed frame 202 arranged on one side of the output end of the hydraulic cylinder 201, and a clamping block 203 arranged on the other side of the fixed frame 202. The above is the prior art and will not be described in detail below. The inner wall of the fixed frame 202 is provided with through holes and threaded holes on all four sides.

[0033] Two sets of workpieces are placed between two sets of clamping components 2 on the fixed platform 1. The clamping components 2 are used to clamp and fix them slightly. By activating the hydraulic cylinder 201, the hydraulic cylinder 201 drives the fixed frame 202 on the output end to move during operation. When the fixed frame 202 moves, it will simultaneously drive the clamping block 203 on the other end to move. At this time, when the clamping blocks 203 on both sides of the workpiece move synchronously, they will clamp the workpiece on the inner side.

[0034] The multi-point positioning component 3 is disposed inside the fixed frame 202. The multi-point positioning component 3 includes a guide rod 301 slidably connected in the through holes around the fixed frame 202, a slide rail 302 welded to the bottom end of the guide rod 301, a slider 303 slidably connected to the slide rail 302 on one side, a toothed block 304 welded to the other side of the slider 303, a positioning block 305 welded to one end of the slider 303, a drive motor 306 disposed inside the fixed frame 202, and a gear 307 disposed on the output end of the drive motor 306. Gear 307 meshes with tooth block 304. Spring 308 is sleeved on guide rod 301. The two ends of spring 308 are respectively attached to the outer wall of fixed frame 202 and slide rail 302. There are two sets of gear 307 located at the output end of drive motor 306. One set of gear 307 meshes with two sets of tooth blocks 304 distributed along the "Z" axis, and the other set of gear 307 meshes with two sets of tooth blocks 304 distributed along the "Y" axis. Anti-slip pads are adhered to the outer wall of clamping block 203 and positioning block 305 that contact the workpiece.

[0035] When it is necessary to position the workpiece around its perimeter to prevent excessive pressure from the clamping block 203 on the workpiece, which could damage the workpiece surface, the drive motor 306 is activated. During operation, the drive motor 306 drives the gear 307 on its output end to rotate. As the gear 307 rotates, the slider 303 meshes with the gear 307 via the toothed block 304. Furthermore, the slider 303 can slide outside the slide rail 302 on the guide rod 301, and the slide rail 302, through a spring 308, stably meshes the slider 303 with the toothed block 304. At this time, the toothed block 304, influenced by the rotation of the gear 307, moves... The movable slider 303 moves stably on the slide rail 302. When the surface of the workpiece is irregular, after one set of positioning blocks 305 is attached to one side of the workpiece surface by the displacement of the slider 303, the other set of positioning blocks 305 needs to continue to be attached to the surface of the workpiece by the movement of the slider 303. At this time, the positioning blocks 305 that are already attached to the outer wall of the workpiece can be connected to the slider 303. After the toothed block 304 below the slider 303 cannot move when the gear 307 rotates, it will be pushed by the pressure to move the toothed block 304 in the direction of the pressure push of the spring 308, so that the positioning blocks 305 located around the workpiece can be attached to the outer wall of the workpiece.

[0036] Example 2:

[0037] Please see Figures 1-4 This embodiment provides a technical solution: a support fixture for welding automotive workpieces, comprising: a threaded screw 309 and a handle 310;

[0038] The threaded rod 309 is rotatably connected to the threaded holes around the fixed frame 202 and the handle 310 is fixed on the end of the threaded rod 309 near the outside of the fixed frame 202. The end of the threaded rod 309 located inside the fixed frame 202 is attached to the outer wall of the slide rail 302.

[0039] After the four sets of positioning blocks 305 move and fit against the outer wall of the workpiece, the threaded rod 309 can be rotated by holding the handle 310. At this time, the threaded rod 309 rotates in the threaded hole of the fixed frame 202, thereby generating displacement. The other end of the threaded rod 309 fits against the surface of the slide rail 302, thereby cooperating with the gear 307 that no longer rotates, to achieve stable positioning of the slider 303.

[0040] The implementation principle of this utility model for a support fixture used for welding automotive workpieces is as follows:

[0041] First, two sets of workpieces are placed between two sets of clamping components 2 on the fixed platform 1. The clamping components 2 are used to clamp and fix them slightly. By activating the hydraulic cylinder 201, the hydraulic cylinder 201 moves the fixed frame 202 on the output end during operation. When the fixed frame 202 moves, it will simultaneously drive the clamping block 203 on the other end to move. At this time, when the clamping blocks 203 on both sides of the workpiece move synchronously, they will clamp the workpiece on the inner side.

[0042] Secondly, when it is necessary to position the workpiece around its perimeter to prevent the clamping block 203 from excessively squeezing the workpiece and causing damage to its surface, the drive motor 306 is activated. During operation, the drive motor 306 drives the gear 307 on its output end to rotate. As the gear 307 rotates, the slider 303 meshes with the gear 307 through the toothed block 304. Furthermore, the slider 303 can slide outside the slide rail 302 on the guide rod 301, and the slide rail 302, through the spring 308, stably meshes the slider 303 with the toothed block 304. At this time, the toothed block 304 is affected by the rotation of the gear 307, thus… The slider 303 moves stably on the slide rail 302. When the surface of the workpiece is irregular, after one set of positioning blocks 305 is attached to one side of the workpiece surface by the displacement of the slider 303, the other set of positioning blocks 305 needs to continue to be attached to the surface of the workpiece by the movement of the slider 303. At this time, the positioning blocks 305 that are already attached to the outer wall of the workpiece can be connected to the slider 303. After the toothed block 304 below the slider 303 cannot move when the gear 307 rotates, it will push the toothed block 304 to move in the direction of the spring 308 to achieve displacement, so that the positioning blocks 305 located around the workpiece can be attached to the outer wall of the workpiece.

[0043] Finally, after the four sets of positioning blocks 305 move and fit against the outer wall of the workpiece, the threaded rod 309 is rotated by holding the handle 310. At this time, the threaded rod 309 rotates in the threaded hole of the fixed frame 202, thereby generating displacement. The other end of the threaded rod 309 fits against the surface of the slide rail 302, thereby cooperating with the gear 307 that no longer rotates, and achieving stable positioning of the slider 303.

[0044] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A support fixture for welding an automotive workpiece, characterized by, The utility model relates to a kind of multi-point positioning clamp, including: Supporting clamp body is composed of fixed mesa (1) and clamping assembly (2) being arranged on the two sides above fixed mesa (1), the number of clamping assembly (2) is two groups, clamping assembly (2) includes hydraulic cylinder (201) being arranged on the two ends above fixed mesa (1), fixed frame (202) being arranged on the output end of hydraulic cylinder (201) on one side and clamping block (203) being arranged on the other side of fixed frame (202) are composed, threaded hole and through-hole are all set on the inner wall of fixed frame (202) four around; Multi-point positioning assembly (3) is arranged in the inside of fixed frame (202), and multi-point positioning assembly (3) includes guide rod (301) being slidably connected in the through-hole of fixed frame (202) four around, slide rail (302) being welded on the bottom end of guide rod (301), slider (303) being slidably connected on one side of slide rail (302), tooth block (304) being welded on the other side of slider (303), positioning block (305) being welded on one end of slider (303), drive motor (306) being arranged in the inside of fixed frame (202) and gear (307) being arranged on the output end of drive motor (306), and gear (307) is engaged with tooth block (304).

2. A support fixture for welding automotive workpieces as defined in claim 1 wherein: Multi-point positioning assembly (3) further includes spring (308) being sleeved on guide rod (301), and the outer wall of fixed frame (202) and slide rail (302) is respectively adhered on both ends of spring (308).

3. A support fixture for welding automotive workpieces as defined in claim 2 wherein: Multi-point positioning assembly (3) further includes threaded screw rod (309) being threadedly rotatably connected in the threaded hole of fixed frame (202) four around and handle (310) being fixed on the end of threaded screw rod (309) on the outside of fixed frame (202).

4. The support fixture for welding automotive workpieces of claim 3, wherein: The outer wall of slide rail (302) is adhered on the end of threaded screw rod (309) in the inside of fixed frame (202).

5. A support fixture for welding automotive workpieces as defined in claim 4 wherein: The number of gear (307) being arranged on the output end of drive motor (306) is two groups, one group of gear (307) is engaged with two groups of "Z"-axis distributed tooth block (304), and another group of gear (307) is engaged with two groups of "Y"-axis distributed tooth block (304).

6. The support fixture for welding automotive workpieces of claim 1 wherein: Anti-skid pad is bonded on the outer wall of clamping block (203) and positioning block (305) and workpiece contact.

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