Welding clamping device for torsion beam edge rolling

Abstract

The utility model discloses a torsion beam edge rolling welding clamping device, which relates to the technical field of automobile part manufacturing, and comprises a base for placing a torsion beam, a first fixing mechanism and a second fixing mechanism, the lower end of the base is symmetrically provided with supporting pieces, the first fixing mechanism is symmetrically arranged at the two ends of the base, and the second fixing mechanism is symmetrically arranged at the two ends of the base. The first fixing mechanism is arranged on one side of the torsion beam and used for fixing the end of the torsion beam, and the second fixing mechanism is arranged on one side of the first fixing mechanism and used for fixing the middle of the torsion beam. The torsion beam positioning and clamping device can be flexibly arranged on a machine welding line station, material placing and taking operation is convenient, under mutual cooperation of the first fixing mechanism and the second fixing mechanism, the torsion beam positioning and clamping device can accurately position and stably clamp a torsion beam, it is guaranteed that lap joint side lines on the back of the torsion beam are evenly connected during welding, and welding quality is improved. Large gaps cannot be generated due to springback of the steel plate, and welding defects such as pseudo soldering are avoided.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts manufacturing technology, specifically a welding clamping device for rolling a torsion beam. Background Technology

[0002] Torsion beams are commonly used as rear axle crossbeams in passenger cars. They offer advantages such as simple structure, easy adjustment, and low manufacturing cost. Their main structures are open-section torsion beams and closed-section torsion beams. Closed-section torsion beams are manufactured using conventional processes such as hot stamping, cold stamping followed by heat treatment, and hydroforming. Variable-section torsion beams are made by first cold-stamping and drawing sheet metal, then laser-cutting the edges, and finally rolling it into a closed section with a U-shaped or V-shaped cross-section. Current technology uses a segmented welding method for the back edge of the torsion beam. The left and right edges are welded first, and then the remaining gap in the middle is welded. The back of the torsion beam is welded by machine to close the overlapping edges of the sheet metal. However, this welding method involves work interruptions, and welding defects exist at the joints of edges welded at different times, resulting in uneven welds across the entire crossbeam. This reduces the structural strength of the torsion beam and can lead to cracking during vehicle testing.

[0003] Based on this, a welding clamping device for rolling torsion beams is now provided, which can eliminate the drawbacks of existing technical solutions. Utility Model Content

[0004] The purpose of this invention is to provide a welding clamping device for rolling a torsion beam, so as to solve the problem in the prior art that the overlapping edge of the back of the torsion beam cannot be welded evenly during welding.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A welding clamping device for rolling a torsion beam includes a base for placing the torsion beam, with symmetrical support members arranged at the lower end of the base, and also includes a first fixing mechanism and a second fixing mechanism. The first fixing mechanism is symmetrically arranged at both ends of the base for fixing the ends of the torsion beam, and the second fixing mechanism is arranged on one side of the first fixing mechanism for fixing the middle part of the torsion beam.

[0007] The first fixing mechanism includes placement slots symmetrically opened on the upper surface of the base. A first cylinder is fixedly installed inside each placement slot. A first caliper is fixedly installed at the output end of the first cylinder. A first insert that matches the profile of the torsion beam is provided at the end of the first caliper. A limiting component that cooperates with the first caliper is also provided at the upper end of the base.

[0008] Preferably, the limiting component includes slide rails symmetrically mounted on the upper surface of the base. Each slide rail has a sliding seat slidably mounted on its upper surface. A fixing block is fixedly mounted on the upper end of each sliding seat. Each of the two fixing blocks has a cross-sectional groove on one side opposite to the other. The dimensions of the cross-sectional groove are adapted to the dimensions of the torsion beam port cross-section. A guide block is provided below the cross-sectional groove. The guide block is slidably connected to the base and fixedly connected to the fixing block. The other end of the guide block is fixedly connected to the output end of the second cylinder, which is fixedly mounted on the upper surface of the base.

[0009] Preferably, the second fixing mechanism includes symmetrically formed grooves on the upper surface of the base. A mounting block is fixedly disposed at the upper end of the groove. A support frame is slidably disposed on one side of the mounting block. The mounting block and the support frame are connected by bolts. The support frame is slidably connected to the inner wall of the groove. A material support block for placing the torsion beam is disposed at the upper end of the support frame. A pneumatic caliper is disposed above the material support block. The bottom of the pneumatic caliper is fixedly connected to the bottom wall of the groove. A second insert adapted to the profile of the torsion beam is disposed at the end of the pneumatic caliper.

[0010] Preferably, a limit block is provided on the side of the slide rail away from the placement groove.

[0011] Preferably, the first caliper and the first insert are detachably connected, and the pneumatic caliper and the second insert are detachably connected.

[0012] Preferably, the limiting component further includes a third cylinder fixedly installed on the lower surface of the base. The output end of the third cylinder is fixedly connected to a rack, and the lower end of the rack is meshed with a gear. The gear is fixedly installed on the outside of the bidirectional lead screw. Both ends of the bidirectional lead screw are threadedly connected to the slider. The upper end of the slider extends to the top of the base and is fixedly connected to the bottom of the slide block.

[0013] Preferably, the base surface has a groove that mates with the slider, and the slider is slidably connected to the groove.

[0014] Preferably, the bidirectional lead screw is connected to the base via a bracket.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. This utility model can be flexibly arranged at the machine welding line station, which is convenient for material feeding and picking operations. With the cooperation of the first fixing mechanism and the second fixing mechanism, the device can accurately position and firmly clamp the torsion beam, ensuring that the overlapping edge of the back of the torsion beam is evenly connected during welding, and will not produce large gaps due to the rebound of the steel plate, thus avoiding welding defects such as false welding.

[0017] 2. This utility model features a torsion beam rolling stamping process, which is suitable for both manually operated stamping lines and automated production stamping lines. It is easy to adapt to different types of production lines and equipment, reducing investment costs and improving production efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the torsion beam rolling and stamping process of this utility model.

[0019] Figure 2 This is a schematic diagram of the structure of this utility model.

[0020] Figure 3 This is a structural schematic diagram of one side of this utility model.

[0021] Figure 4 This is a schematic diagram of the structure on the other side of this utility model.

[0022] Figure 5 This is a schematic diagram of the structure of the first cylinder of this utility model.

[0023] Figure 6 This is a schematic diagram of the second fixing mechanism of this utility model.

[0024] Figure 7 This is a schematic diagram of the structure of Embodiment 2 of this utility model.

[0025] Figure 8 This is a bottom view of the structure of Embodiment 2 of this utility model.

[0026] Figure 9 This is a cross-sectional view of Embodiment 2 of the present invention.

[0027] Reference numerals in the attached drawings: base 101, support 102, first fixing mechanism 200, placement groove 201, first cylinder 202, first caliper 203, first insert 204, slide rail 205, slide block 206, fixing block 207, cross-sectional groove 208, guide block 209, second cylinder 210, limit block 211, third cylinder 212, rack 213, gear 214, double-acting lead screw 215, slider 216, slide groove 217, second fixing mechanism 300, groove 301, mounting block 302, support frame 303, material support block 304, pneumatic caliper 305, second insert 306. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0029] Example 1

[0030] In this embodiment, as Figures 1-6 As shown, a welding clamping device for rolling a torsion beam is disclosed. This device can accurately position and securely clamp the torsion beam, ensuring uniform connection of the overlapping edges on the back of the torsion beam during machine welding, thereby improving production quality and efficiency. The device includes a base 101 for placing the torsion beam, with symmetrically arranged support members 102 at the lower end of the base 101 for support and ease of movement. It also includes a first fixing mechanism 200 and a second fixing mechanism 300. The first fixing mechanism 200 is symmetrically arranged at both ends of the base 101 to fix the ends of the torsion beam, and the second fixing mechanism 300 is located on one side of the first fixing mechanism 200 to fix the middle part of the torsion beam. Before the torsion beam is rolled for welding clamping, a high-strength steel plate needs to be stamped into a torsion beam using a torsion beam rolling and stamping process. The process includes the following steps: first, the sheet metal is drawn using a corresponding mold; then, the sheet metal is trimmed using laser cutting equipment; next, the sheet metal is flanged using a corresponding mold; then, the sheet metal is side-shaped using a mold; and finally, the sheet metal is rolled into a circle using a corresponding mold to obtain a torsion beam. This process only requires the manufacture of the corresponding mold, and the torsion beam can be produced on existing stamping equipment in the factory. Compared with the existing hot stamping, hydroforming, and cold stamping followed by heat treatment processes, the torsion beam rolling and stamping process does not require the purchase of expensive special molds, special presses, and heat treatment production line equipment, thus reducing production costs. This process is applicable to both manually operated stamping lines and automated machine stamping lines, making it easy to adapt to different types of production lines and equipment.

[0031] The first fixing mechanism 200 includes placement slots 201 symmetrically opened on the upper surface of the base 101. A first cylinder 202 is fixedly installed inside each placement slot 201. A first caliper 203 is fixedly installed at the output end of the first cylinder 202 to facilitate the adjustment of the position of the first caliper 203 so that the first caliper 203 can stably clamp the torsion beam surface. A first insert 204 adapted to the torsion beam surface is provided at the end of the first caliper 203. A limiting component that cooperates with the first caliper 203 is also provided at the upper end of the base 101 for fixing the end of the torsion beam.

[0032] Among them, such as Figures 2-6As shown, the limiting component includes slide rails 205 symmetrically mounted on the upper surface of the base 101. Slide seats 206 are slidably mounted on the upper surface of each slide rail 205. Fixing blocks 207 are fixedly mounted on the upper end of each slide seat 206. Cross-sectional grooves 208 are formed on opposite sides of each fixing block 207. The dimensions of the cross-sectional grooves 208 are adapted to the dimensions of the torsion beam end cross-section. The cross-sections at both ends of the torsion beam are rounded rectangles, facilitating limiting operations at the ends of the torsion beam according to its length. A guide block 209 is provided below the cross-sectional groove 208, and the guide block 209 is slidably connected to the base 101. The surface of the guide block 209 is provided with... Several threaded holes are provided, and the guide block 209 is fixedly connected to the base 101 by several bolts, which facilitates the restriction of the position of the fixed block 207 and increases the overall practicality of the device. The guide block 209 is fixedly connected to the fixed block 207, and the other end of the guide block 209 is fixedly connected to the output end of the second cylinder 210. The second cylinder 210 is fixedly installed on the upper surface of the base 101. Under the push of the first cylinder 202 and the second cylinder 210, it is easy to press the area near the overlapping edge of the back of the torsion beam to limit the springback of the sheet metal and ensure that the overlapping edge area of ​​the back of the torsion beam is continuously constrained so as to maintain the uniform connection of the edge and the dense weld.

[0033] Among them, such as Figures 2-6 As shown, the second fixing mechanism 300 includes grooves 301 symmetrically formed on the upper surface of the base 101. A mounting block 302 is fixedly installed at the upper end of the groove 301. A support frame 303 is slidably installed on one side of the mounting block 302. The mounting block 302 and the support frame 303 are connected by bolts to facilitate the adjustment of the position of the material support block 304, so that the end face of the material support block 304 can smoothly contact the torsion beam profile. The support frame 303 is slidably connected to the inner wall of the groove 301. A material support block 304 for placing the torsion beam is provided at the upper end of the support frame 303. A pneumatic clamp 305 is provided above the material support block 304. The bottom of the pneumatic clamp 305 is fixedly connected to the bottom wall of the groove 301. A second insert 306 adapted to the torsion beam profile is provided at the end of the pneumatic clamp 305 to facilitate pressing the area near the overlapping edge of the back of the torsion beam and improve the stability of the clamping effect.

[0034] Among them, such as Figure 1 As shown, a limit block 211 is provided on the side of the slide rail 205 away from the placement groove 201, and the limit block 211 can limit the movement distance of the slide block 206.

[0035] Among them, such as Figure 1 As shown, the first caliper 203 and the first insert 204 are detachably connected, and the pneumatic caliper 305 and the second insert 306 are detachably connected, which facilitates the replacement and installation of the inserts and adapts to torsion beams of different specifications and sizes.

[0036] Example 2

[0037] The difference from Example 1 is that, as in Example 1, Figures 7-9 As shown, the limiting assembly also includes a third cylinder 212 fixedly installed on the lower surface of the base 101. The output end of the third cylinder 212 is fixedly connected to a rack 213. The rack 213 is slidably connected to the base 101. The lower end of the rack 213 is meshed with a gear 214. The gear 214 is fixedly installed on the outside of the bidirectional lead screw 215. Both ends of the bidirectional lead screw 215 are threadedly connected to the slider 216. The upper end of the slider 216 extends above the base 101 and is fixedly connected to the bottom of the slide block 206. When the third cylinder 212 is activated, the rack 213 is moved, which realizes the rotation operation of the gear 214 and the bidirectional lead screw 215. This allows the two sliders 216 to move closer or further apart along the direction of the slide groove 217, which is convenient for adapting to the end of the torsion beam and so that the torsion beam can be in the central position of the device, which is convenient for subsequent welding processes.

[0038] Among them, such as Figures 7-9 As shown, the base 101 has a groove 217 on its surface that cooperates with the slider 216. The slider 216 is slidably connected to the groove 217, which guides the slider 216.

[0039] Among them, such as Figure 8 and Figure 9 As shown, the bidirectional lead screw 215 is connected to the base 101 via a bracket, which is used to limit the position of the bidirectional lead screw 215 and ensure the normal operation of the device.

[0040] In use, the device can be flexibly arranged at the welding line station. First, the torsion beam is placed on the material support block 304. The pneumatic caliper 305 with a contour support structure is adjusted according to the specifications and dimensions of the torsion beam so that the second insert 306 can be in close contact with the torsion beam profile. The base 101 has contour fixing blocks 207 with the same cross section as the torsion beam port at both ends. With the cooperation of the cylinder and other components, the two ports of the torsion beam can be smoothly inserted to fix its position. The ends of the first caliper 203 and the pneumatic caliper 305 are equipped with inserts that match the torsion beam profile, which can press the area near the overlapping edge of the back of the torsion beam to limit the rebound of the sheet metal, ensure that the overlapping edge area of ​​the back of the torsion beam is continuously constrained, avoid welding defects such as incomplete welding, increase the structural strength of the torsion beam, and improve production efficiency and quality.

[0041] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A welding clamping device for rolling a torsion beam, comprising a base (101) for placing the torsion beam, wherein support members (102) are symmetrically arranged at the lower end of the base (101), characterized in that, It also includes a first fixing mechanism (200), which is symmetrically arranged at both ends of the base (101) for fixing the ends of the torsion beam; The second fixing mechanism (300) is disposed on one side of the first fixing mechanism (200) and is used to fix the middle part of the torsion beam; The first fixing mechanism (200) includes placement slots (201) symmetrically opened on the upper surface of the base (101). A first cylinder (202) is fixedly installed inside each placement slot (201). A first caliper (203) is fixedly installed at the output end of the first cylinder (202). A first insert (204) adapted to the profile of the torsion beam is provided at the end of the first caliper (203). A limiting component that cooperates with the first caliper (203) is also provided at the upper end of the base (101).

2. The welding clamping device for rolling a torsion beam according to claim 1, characterized in that, The limiting component includes slide rails (205) symmetrically mounted on the upper surface of the base (101). Each slide rail (205) has a sliding seat (206) slidably mounted on its upper surface. Each sliding seat (206) has a fixed block (207) fixedly mounted on its upper end. Each of the two fixed blocks (207) has a cross-sectional groove (208) on one side opposite to the other. The dimensions of the cross-sectional groove (208) are adapted to the dimensions of the torsion beam port cross-section. A guide block (209) is provided below the cross-sectional groove (208). The guide block (209) is slidably connected to the base (101) and fixedly connected to the fixed block (207). The other end of the guide block (209) is fixedly connected to the output end of the second cylinder (210). The second cylinder (210) is fixedly mounted on the upper surface of the base (101).

3. The welding clamping device for rolling a torsion beam according to claim 2, characterized in that, The second fixing mechanism (300) includes grooves (301) symmetrically opened on the upper surface of the base (101). An installation block (302) is fixedly provided at the upper end of the groove (301). A support frame (303) is slidably provided on one side of the installation block (302). The installation block (302) and the support frame (303) are connected by bolts. The support frame (303) is slidably connected to the inner wall of the groove (301). A material support block (304) for placing the torsion beam is provided at the upper end of the support frame (303). A pneumatic caliper (305) is provided above the material support block (304). The bottom of the pneumatic caliper (305) is fixedly connected to the bottom wall of the groove (301). A second insert (306) adapted to the profile of the torsion beam is provided at the end of the pneumatic caliper (305).

4. The welding clamping device for rolling a torsion beam according to claim 2, characterized in that, A limit block (211) is provided on the side of the slide rail (205) away from the placement groove (201).

5. The welding clamping device for rolling a torsion beam according to claim 3, characterized in that, The first caliper (203) and the first insert (204) are detachably connected, and the pneumatic caliper (305) and the second insert (306) are detachably connected.

6. The welding clamping device for rolling a torsion beam according to claim 2, characterized in that, The limiting assembly also includes a third cylinder (212) fixedly installed on the lower surface of the base (101). The output end of the third cylinder (212) is fixedly connected to a rack (213). The lower end of the rack (213) is meshed with a gear (214). The gear (214) is fixedly installed on the outside of a bidirectional lead screw (215). Both ends of the bidirectional lead screw (215) are threadedly connected to a slider (216). The upper end of the slider (216) extends above the base (101) and is fixedly connected to the bottom of the slide block (206).

7. The welding clamping device for rolling a torsion beam according to claim 6, characterized in that, The base (101) has a groove (217) on its surface that cooperates with the slider (216), and the slider (216) is slidably connected to the groove (217).

8. The welding clamping device for rolling a torsion beam according to claim 6, characterized in that, The bidirectional lead screw (215) is connected to the base (101) via a bracket.

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