Welding device for anti-collision energy-absorbing structure at front end of automobile

Abstract

The invention discloses a welding device for an anti-collision energy-absorbing structure at the front end of an automobile, and relates to the technical field of welding devices for the anti-collision energy-absorbing structure at the front end of the automobile. The welding device comprises a supporting frame, a front frame is placed at the top of the supporting frame, an energy-absorbing beam is placed at the top of the front frame, and a motor is fixedly installed at the bottom of the supporting frame; a lead screw is fixedly installed at the output end of the motor, a fixing rod is rotatably installed on the side, away from the motor, of the supporting frame, a square plate is fixedly installed on the side, close to the fixing rod, of the supporting frame, a sliding groove is formed in the side, close to the fixing rod, of the square plate, the fixing rod makes contact with the inner wall of the sliding groove, and a welding gun is placed in the fixing rod. A fixing device is further arranged at the top of the supporting frame, the front frame and the energy absorption beam are fixed to the correct positions before welding, it is ensured that the relative positions and angles between the front frame and the energy absorption beam meet the design requirements, and accurate positioning is crucial to effective work of the energy absorption structure in the collision process.

Description

Technical Field

[0001] This invention relates to the technical field of welding devices for anti-collision energy-absorbing structures at the front of automobiles, specifically to a welding device for an anti-collision energy-absorbing structure at the front of an automobile. Background Technology

[0002] With the continuous development of modern transportation vehicles, buildings, and industrial equipment, collision avoidance technology is being applied more and more widely in various fields. Especially in the safety design of transportation vehicles, collision avoidance energy absorption structures play a crucial role.

[0003] Patent publication number CN212398653U relates to the technical field of welding devices for anti-collision energy-absorbing structures at the front of automobiles. It includes a protective box, a suction fan, and a processing box. The protective box contains a processing plate and a welding torch mechanism. The output and input ends of the suction fan are fixedly connected to a suction pipe and an exhaust pipe, respectively. This protective welding device prevents sparks and harmful gases generated during welding from harming the health of workers by transferring the welding process inside the protective box. The suction fan absorbs harmful gases generated inside the protective box and discharges them into the processing box for treatment, preventing their spread. When the suction pipe absorbs harmful gases, a through-hole suction baffle moves the connecting pipe to the right, drawing air through suction holes on the outer surface of the connecting pipe. When the suction fan stops running, a backflow prevention structure is formed by the sealing plug, baffle, and connecting pipe, effectively preventing the backflow of harmful gases.

[0004] The aforementioned patent uses air intake holes on the outer surface of the connecting pipe to draw in air. When the fan stops running, the sealing plug, baffle, and connecting pipe form an anti-backflow structure, which effectively prevents harmful gases from flowing back. However, when welding the front frame and the energy-absorbing beam, the energy-absorbing beam may shift from the front frame during the welding process. Once this shift occurs, the positioning of the front frame and the energy-absorbing beam will be inaccurate, which may affect the performance of the energy-absorbing structure and reduce the energy absorption efficiency during a collision. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a welding device for an anti-collision energy-absorbing structure at the front end of an automobile, solving the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a welding device for an anti-collision energy-absorbing structure at the front end of an automobile, comprising a support frame, a front frame placed on top of the support frame, an energy-absorbing beam placed on top of the front frame, a motor fixedly mounted at the bottom of the support frame, a lead screw fixedly mounted at the output end of the motor, a fixing rod rotatably mounted on the support frame away from the motor, a square plate fixedly mounted on the side of the support frame near the fixing rod, a groove formed on the side of the square plate near the fixing rod, the fixing rod contacting the inner wall of the groove, a welding gun placed inside the fixing rod, and a fixing device also provided on the top of the support frame; The fixing device also includes: a rotating plate, a clamping plate, a sliding plate, a clamp, a buffer plate, a sliding block, a rotating rod, a pin, and a fixing component. The sliding plate is slidably mounted on the top of the support frame. The clamp is rotatably mounted on the top of the sliding plate. The rotating plate is rotatably mounted on the top of the support frame. The clamp is slidably mounted on the top of the support frame. The buffer plate is fixedly mounted on the side of the clamp near the front frame. The sliding block is slidably mounted on the top of the clamp. The rotating rod is rotatably mounted on both sides of the sliding block. The pin is rotatably mounted on the top of the sliding block. The fixing component is rotatably mounted on the side of the clamp near the front frame. The movement of the sliding plate will drive the clamp to move, and the movement of the clamp will clamp and fix the front frame. The movement of the sliding plate will contact the rotating plate, and the sliding plate will push the rotating plate to rotate. The rotation of the rotating plate will push the clamp to move towards the front frame. The movement of the clamp will drive the buffer plate to move, and the movement of the buffer plate will fix the energy-absorbing beam. Before welding, the front frame and the energy-absorbing beam are fixed in the correct position to ensure that their relative position and angle meet the design requirements. Precise positioning is crucial to ensuring that the energy-absorbing structure works effectively during a collision.

[0007] According to the above technical solution, a circular hole is provided at the top of the rotating rod, and the pin contacts the inside of the circular hole. The contact between the pin and the inside of the circular hole is to limit the rotation of the rotating rod. A fixing groove is provided on the side of the sliding block near the fixing member, and the fixing member contacts the inside of the fixing groove. The contact between the fixing member and the inside of the fixing groove is to limit the sliding block.

[0008] According to the above technical solution, a first torsion spring is provided between the rotating plate and the support frame. The first torsion spring is provided to drive the rotating plate back to its original position. A second torsion spring is provided between the pin and the sliding block. The second torsion spring is provided to drive the pin to rotate and limit the rotation rod. A third torsion spring is provided between the fixing member and the clamping plate. The third torsion spring is provided to drive the fixing member to rotate and limit the sliding block.

[0009] According to the above technical solution, the top of the support frame is further provided with a cleaning device for scraping the welded part between the front frame and the energy-absorbing beam, and a collection device for collecting welding slag. The cleaning device includes a pressure plate, a first hydraulic rod, a first hydraulic cylinder, a second hydraulic cylinder, a second hydraulic rod, and a rotating pressure plate. The pressure plate is fixedly installed on the side of the clamp away from the clamping plate. The first hydraulic cylinder is fixedly installed on the side of the slide away from the clamp. The first hydraulic rod is slidably installed on the inner wall of the first hydraulic cylinder. The second hydraulic cylinder is fixedly installed on the side of the support frame near the welding gun. The second hydraulic rod is slidably installed on the inner wall of the second hydraulic cylinder. The first hydraulic cylinder and the second hydraulic cylinder are connected by a hose. The pressure plate is rotatably mounted on the side of the slide plate near the first hydraulic cylinder. The top of the first hydraulic rod is rotatably connected to the bottom of the rotating pressure plate. When the liquid inside the second hydraulic cylinder decreases, it will pull the second hydraulic rod to move into the second hydraulic cylinder. When the second hydraulic rod moves into the second hydraulic cylinder, it will lose contact with the fixed rod, and the limit of the fixed rod will be released. Then the fixed rod can rotate to release the fixation of the welding gun, avoiding welding before the front frame and energy-absorbing beam are fixed. This also avoids the welding object from shifting during the welding of the front frame and energy-absorbing beam, which would cause welding deviation. Shifting would cause uneven contact between the welding surfaces, resulting in some parts of the welding being weak or insufficient. Welding deviation would reduce the connection strength between the front frame and the energy-absorbing beam.

[0010] According to the above technical solution, the cleaning device further includes a round rod, a telescopic scraper, and a connecting rod. The round rod is rotatably mounted on the inner wall of the clamping plate, and the telescopic scraper is slidably mounted on the circumferential surface of the round rod. One end of the connecting rod is fixedly mounted on the bottom of the buffer plate, and the other end of the connecting rod is slidably mounted on the inner wall of the clamping plate. When the buffer plate moves away from the clamping plate, the buffer plate will drive the connecting rod to move away from the telescopic scraper. The telescopic scraper will then be driven by the No. 4 torsion spring to rotate back to its original position. The rotation of the telescopic scraper will scrape the welding position between the front frame and the energy-absorbing beam, cleaning the welding slag on the surface of the front frame and the energy-absorbing beam. If the welding slag is not cleaned in time, it will cause uneven weld scars and cracks to form on the surface of the weld joint, thereby reducing the strength of the joint. Cleaning the welding slag helps to ensure the uniformity and quality of the weld joint, reduce stress concentration, and improve the strength, reliability, and long-term durability of the weld joint.

[0011] According to the above technical solution, the connecting rod contacts the telescopic scraper, the first hydraulic rod slides through the square plate and the fixed rod, the fourth torsion spring is provided between the round rod and the clamping plate, the fourth torsion spring is provided to drive the round rod back to its original position, and the fifth torsion spring is provided between the rotating pressure plate and the sliding plate, the fifth torsion spring is provided to drive the rotating pressure plate back to its original position.

[0012] According to the above technical solution, the collecting device includes a telescopic cover, an outer frame, an inner box, a rotating rod, a rotating plate, a telescopic rod, an inclined plate, and a sliding plate. A collecting groove is provided on the top of the support frame. The telescopic cover is rotatably mounted on the inner wall of the collecting groove. The telescopic cover is connected to the round rod via a flexible rope. The outer frame is fixedly mounted on the bottom of the support frame. The inner box is slidably mounted on the inner wall of the outer frame. A square groove is provided on the inner wall of the collecting groove. The rotating plate is rotatably mounted on the inner wall of the square groove. The rotating rod is fixedly mounted on the side of the rotating plate away from the telescopic cover. The sliding plate is slidably mounted on the bottom of the inner wall of the inner box. One end of the inclined plate is slidably mounted on the inner wall of the inner box. The other end of the inclined plate is rotatably mounted on the top of the sliding plate on the inner wall of the box. The telescopic rod is slidably mounted on the inner wall of the sliding plate. The movement of the telescopic rod will drive the sliding plate to move. The movement of the sliding plate will push the first spring to store force. When the telescopic cover loses contact with the telescopic rod, the first spring will push the sliding plate to move. The movement of the sliding plate will push the collected welding slag towards the center of the inner box, avoiding the accumulation of welding slag inside the inner box. Welding slag will harden after cooling, especially when it accumulates for a long time, making it very difficult to clean. When the welding slag accumulates to a certain height, it may affect the removal of the inner box and increase the difficulty of cleaning the welding slag inside the inner box.

[0013] According to the above technical solution, a No. 6 torsion spring is provided between the telescopic cover and the collection trough. The No. 6 torsion spring is provided to drive the telescopic cover back to its original position. A No. 7 torsion spring is provided between the rotating plate and the square trough. The No. 7 torsion spring is provided to drive the rotating plate to rotate and seal the collection trough. A No. 1 spring is provided between the sliding plate and the inner box. The No. 1 spring is provided to push the sliding plate back to its original position. A No. 2 spring is provided between the telescopic rod and the sliding plate. The No. 2 torsion spring is provided to drive the telescopic rod back to its original position. The top of the telescopic rod is provided with an inclined surface.

[0014] This invention provides a welding device for a collision-resistant energy-absorbing structure at the front of an automobile. It offers the following advantages: (1) In this invention, the movement of the skateboard will drive the movement of the clamp, the movement of the clamp will clamp and fix the front frame, the movement of the skateboard will contact the rotating plate, the skateboard will push the rotating plate to rotate, the rotation of the rotating plate will push the clamp to move towards the front frame, the movement of the clamp will drive the movement of the buffer plate, the movement of the buffer plate will fix the energy-absorbing beam. Before welding, the front frame and the energy-absorbing beam are fixed in the correct position to ensure that their relative position and angle meet the design requirements. Precise positioning is crucial to ensure that the energy-absorbing structure works effectively during the collision. When the buffer plate has not yet fixed the energy-absorbing beam, the energy-absorbing beam will be limited by the rotating rod so that the energy-absorbing beam will not move. When the sliding block moves to the appropriate position, the sliding block is limited by the contact between the fixing part and the inner wall of the fixing groove to avoid the sliding block moving when the energy-absorbing beam is limited, causing the energy-absorbing beam to deviate from the welded position. Inaccurate positioning of the front frame and the energy-absorbing beam may affect the performance of the energy-absorbing structure and reduce the energy absorption efficiency during the collision.

[0015] (2) In this invention, when the second hydraulic rod moves into the second hydraulic cylinder, it loses contact with the fixed rod, and the limit of the fixed rod is released. Then the fixed rod can rotate to release the fixing of the welding gun, avoiding welding before the front frame and the energy-absorbing beam are fixed. It also avoids the welding object from shifting during the welding of the front frame and the energy-absorbing beam, which would cause welding deviation. The shift would cause uneven contact between the welding surfaces, resulting in some parts being not firmly welded or not fully welded. Welding deviation would reduce the connection strength between the front frame and the energy-absorbing beam, and the buffer plate would gradually move away from the clamping plate. When the buffer plate moves away from the clamping plate, the buffer plate will drive the connecting rod to move away from the telescopic scraper. The telescopic scraper will then be driven by the No. 4 torsion spring to rotate back to its original position. The rotation of the telescopic scraper will scrape the welded area between the front frame and the energy-absorbing beam, cleaning the weld slag on the surface of the front frame and the energy-absorbing beam. If the weld slag is not cleaned in time, it will cause uneven weld scars and cracks to form on the surface of the welded joint, thereby reducing the strength of the joint. Cleaning the weld slag helps to ensure the uniformity and quality of the welded joint, reduce stress concentration, and improve the strength, reliability and long-term durability of the welded joint.

[0016] (3) In this invention, the movement of the telescopic rod will drive the sliding plate to move, and the movement of the sliding plate will push the No. 1 spring to store force. When the telescopic cover loses contact with the telescopic rod, the No. 1 spring will push the sliding plate to move. The movement of the sliding plate will push the collected welding slag to move towards the center of the inner box to prevent the welding slag from accumulating inside the inner box. The welding slag will harden after cooling, especially when it accumulates for a long time, making it very difficult to clean. When the welding slag accumulates to a certain height, it may affect the removal of the inner box and increase the difficulty of cleaning the welding slag inside the inner box. When the inner box is pulled out, it will lose its obstruction to the rotating rod. When the obstruction of the rotating rod is released, the limit of the rotating plate will be released, and the No. 7 torsion spring will push the rotating plate to rotate and seal the collection groove, so that the welding slag will be temporarily stored on the surface of the rotating plate when the inner box is pulled out, preventing the welding slag from falling to other places. The welding slag is usually composed of metal residue, oxides and other chemical substances. If it falls outside the inner box, it may cause environmental pollution. If the welding slag is not cleaned up in time, it may cause pollution to the ground, surrounding facilities or other equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the position structure of the slide plate and clamp of the present invention; Figure 3 For the present invention Figure 2 Enlarged structural diagram of section A; Figure 4 For the present invention Figure 2 Enlarged structural diagram of section B; Figure 5This is a schematic diagram of the position structure of the sliding block and rotating rod of the present invention; Figure 6 This is a schematic diagram showing the position and structure of the telescopic cover and support frame of the present invention; Figure 7 This is a schematic diagram of the position structure of the connecting rod and the telescopic scraper of the present invention; Figure 8 This is a schematic diagram showing the positional structure of the outer frame and inner box of the present invention; Figure 9 This is a schematic diagram showing the position and structure of the rotating rod and rotating plate of the present invention; Figure 10 This is a schematic diagram of the position and structure of the sliding plate and telescopic rod of the present invention.

[0018] In the diagram: 1. Support frame; 2. Energy-absorbing beam; 3. Front frame; 4. Welding gun; 5. Motor; 6. Lead screw; 7. Rotating plate; 8. Clamping plate; 9. Slide plate; 10. Chuck; 11. Buffer plate; 12. Sliding block; 13. Rotating rod; 14. Pin; 15. Fixing component; 16. Fixing rod; 17. Square plate; 181. Pressing plate; 182. Hydraulic rod No. 1; 183. Hydraulic cylinder No. 1; 184. Hydraulic cylinder No. 2; 185. Hydraulic rod No. 2; 186. Round rod; 187. Telescopic scraper; 188. Connecting rod; 189. Rotating pressure plate; 191. Telescopic cover plate; 192. Outer frame; 193. Inner box; 194. Rotating rod; 195. Rotating plate; 196. Telescopic rod; 197. Inclined plate; 198. Sliding plate. Detailed Implementation

[0019] 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.

[0020] Please see Figures 1-10 One embodiment of the present invention is: a welding device for an anti-collision energy-absorbing structure of a car front end, including a support frame 1, a front frame 3 placed on the top of the support frame 1, an energy-absorbing beam 2 placed on the top of the front frame 3, a motor 5 fixedly installed at the bottom of the support frame 1, a lead screw 6 fixedly installed at the output end of the motor 5, a fixed rod 16 rotatably installed on the support frame 1 away from the motor 5, a square plate 17 fixedly installed on the side of the support frame 1 close to the fixed rod 16, a groove is opened on the side of the square plate 17 close to the fixed rod 16, the fixed rod 16 contacts the inner wall of the groove, a welding gun 4 is placed inside the fixed rod 16, and a fixing device is also provided on the top of the support frame 1; The fixing device also includes: a rotating plate 7, a clamping plate 8, a sliding plate 9, a clamp 10, a buffer plate 11, a sliding block 12, a rotating rod 13, a pin 14, and a fixing member 15. The sliding plate 9 is slidably mounted on the top of the support frame 1, the clamp 10 is rotatably mounted on the top of the sliding plate 9, the rotating plate 7 is rotatably mounted on the top of the support frame 1, the clamping plate 8 is slidably mounted on the top of the support frame 1, the buffer plate 11 is fixedly mounted on the side of the clamping plate 8 near the front frame 3, the sliding block 12 is slidably mounted on the top of the clamping plate 8, the rotating rod 13 is rotatably mounted on both sides of the sliding block 12, the pin 14 is rotatably mounted on the top of the sliding block 12, and the fixing member 15 is rotatably mounted on the clamping plate 9. The side of plate 8 closest to the front frame 3. The movement of the sliding plate 9 will cause the clamp 10 to move, and the movement of the clamp 10 will clamp and fix the front frame 3. The movement of the sliding plate 9 will make contact with the rotating plate 7, and the sliding plate 9 will push the rotating plate 7 to rotate. The rotation of the rotating plate 7 will push the clamp 8 to move towards the front frame 3. The movement of the clamp 8 will cause the buffer plate 11 to move, and the movement of the buffer plate 11 will fix the energy-absorbing beam 2. Before welding, the front frame 3 and the energy-absorbing beam 2 are fixed in the correct position to ensure that their relative position and angle meet the design requirements. Precise positioning is crucial to ensuring that the energy-absorbing structure works effectively during the collision.

[0021] The top of the rotating rod 13 has a round hole, and the pin 14 contacts the inside of the round hole. The contact between the pin 14 and the inside of the round hole is to limit the rotation rod 13. The sliding block 12 has a fixing groove on the side near the fixing member 15. The fixing member 15 contacts the inside of the fixing groove. The contact between the fixing member 15 and the inside of the fixing groove is to limit the sliding block 12.

[0022] A first torsion spring is provided between the rotating plate 7 and the support frame 1. The first torsion spring is provided to drive the rotating plate 7 back to its original position. A second torsion spring is provided between the pin 14 and the sliding block 12. The second torsion spring is provided to drive the pin 14 to rotate and limit the rotation rod 13. A third torsion spring is provided between the fixing member 15 and the clamping plate 8. The third torsion spring is provided to drive the fixing member 15 to rotate and limit the sliding block 12.

[0023] In this embodiment, the front frame 3 to be welded is placed on top of the support frame 1, and then the energy-absorbing beam 2 is placed on top of the front frame 3. The front frame 3 and the support frame 1 are then fixed in place. After fixing, the fixing rod 16 is rotated to release the limiting position of the welding gun 4. The welding gun 4 is then used to weld the front frame 3 and the energy-absorbing beam 2. After the front frame 3 and the energy-absorbing beam 2 are fully placed, the motor 5 rotates, which drives the lead screw 6 to rotate. The rotation of the lead screw 6 drives the slide plate 9 to move towards the front frame 3. The movement of the slide plate 9 drives the chuck 10 to move. The movement of the chuck 10 clamps and fixes the front frame 3. The movement of the slide plate 9 will contact the rotating plate 7, and the slide plate 9 will push the rotating plate 7 to rotate. Rotation 7 will push clamping plate 8 to move towards front frame 3. The movement of clamping plate 8 will drive buffer plate 11 to move. The movement of buffer plate 11 will fix energy-absorbing beam 2. When placing energy-absorbing beam 2 at the top welding position of front frame 3, the position of sliding block 12 needs to be adjusted first. The movement of sliding block 12 will drive rotating rod 13 to move. When buffer plate 11 has not yet fixed energy-absorbing beam 2, rotating rod 13 will limit energy-absorbing beam 2 to prevent it from moving. When sliding block 12 moves to the appropriate position, fixing part 15 contacts the inner wall of fixing groove to limit sliding block 12, preventing sliding block 12 from moving when limiting energy-absorbing beam 2, so as to avoid the energy-absorbing beam 2 from deviating from the welding position.

[0024] Please see Figures 1-10 In another embodiment of the present invention, based on the above embodiments, the top of the support frame 1 is further provided with a cleaning device for scraping the welded part between the front frame 3 and the energy-absorbing beam 2 and a collection device for collecting welding slag. The cleaning device includes a pressing plate 181, a first hydraulic rod 182, a first hydraulic cylinder 183, a second hydraulic cylinder 184, a second hydraulic rod 185, and a rotating pressure plate 189. The pressing plate 181 is fixedly installed on the side of the clamp 10 away from the clamp 8, the first hydraulic cylinder 183 is fixedly installed on the side of the slide plate 9 away from the clamp 10, the first hydraulic rod 182 is slidably installed on the inner wall of the first hydraulic cylinder 183, and the second hydraulic cylinder 184 is fixedly installed on the support frame 1 near the... On one side of the welding gun 4, the second hydraulic rod 185 is slidably installed on the inner wall of the second hydraulic cylinder 184. The first hydraulic cylinder 183 and the second hydraulic cylinder 184 are connected by a hose. The rotating pressure plate 189 is rotatably installed on the side of the slide plate 9 near the first hydraulic cylinder 183. The top of the first hydraulic rod 182 is rotatably connected to the bottom of the rotating pressure plate 189. Welding is not performed before the front frame 3 and the energy-absorbing beam 2 are fixed. Welding is not performed before the objects being welded to the front frame 3 and the energy-absorbing beam 2 are fixed. Welding deviation will cause uneven contact between the welding surfaces, resulting in some parts being not firmly welded or not fully welded. Welding deviation will reduce the connection strength between the front frame 3 and the energy-absorbing beam 2.

[0025] The cleaning device also includes a round rod 186, a telescopic scraper 187, and a connecting rod 188. The round rod 186 is rotatably mounted on the inner wall of the clamping plate 8, and the telescopic scraper 187 is slidably mounted on the circumferential surface of the round rod 186. One end of the connecting rod 188 is fixedly mounted on the bottom of the buffer plate 11, and the other end of the connecting rod 188 is slidably mounted on the inner wall of the clamping plate 8. The welding slag on the surface of the front frame 3 and the energy-absorbing beam 2 is cleaned. If the welding slag is not cleaned in time, it will cause uneven weld scars and cracks to form on the surface of the welded joint, thereby reducing the strength of the joint. Cleaning the welding slag helps to ensure the uniformity and quality of the welded joint, reduce stress concentration, and improve the strength, reliability, and long-term durability of the welded joint.

[0026] The connecting rod 188 contacts the telescopic scraper 187. The first hydraulic rod 182 slides through the square plate 17 and the fixed rod 16. A fourth torsion spring is provided between the round rod 186 and the clamping plate 8. The fourth torsion spring is provided to drive the round rod 186 back to its original position. A fifth torsion spring is provided between the rotating pressure plate 189 and the sliding plate 9. The fifth torsion spring is provided to drive the rotating pressure plate 189 back to its original position.

[0027] The collection device includes a telescopic cover 191, an outer frame 192, an inner box 193, a rotating rod 194, a rotating plate 195, a telescopic rod 196, an inclined plate 197, and a sliding plate 198. A collection trough is provided on the top of the support frame 1. The telescopic cover 191 is rotatably mounted on the inner wall of the collection trough. The telescopic cover 191 is connected to the round rod 186 via a soft rope. The outer frame 192 is fixedly mounted on the bottom of the support frame 1. The inner box 193 is slidably mounted on the inner wall of the outer frame 192. A square groove is provided on the inner wall of the collection trough. The rotating plate 195 is rotatably mounted on the inner wall of the square groove. The rotating rod 194 is fixedly mounted on the rotating plate 198. 5. On the side away from the telescopic cover 191, the sliding plate 198 is slidably installed on the bottom of the inner wall of the inner box 193. One end of the inclined plate 197 is slidably installed on the inner wall of the inner box 193, and the other end of the inclined plate 197 is rotatably installed on the top of the sliding plate 198. The telescopic rod 196 is slidably installed on the inner wall of the sliding plate 198 to prevent welding slag from accumulating inside the inner box 193. Welding slag will harden after cooling, and it is very difficult to clean, especially when it accumulates for a long time. When the welding slag accumulates to a certain height, it may affect the removal of the inner box 193 and increase the difficulty of cleaning the welding slag inside the inner box 193.

[0028] A torsion spring of No. 6 is provided between the telescopic cover 191 and the collection trough. The torsion spring of No. 6 is provided to drive the telescopic cover 191 back to its original position. A torsion spring of No. 7 is provided between the rotating plate 195 and the square groove. The torsion spring of No. 7 is provided to drive the rotating plate 195 to rotate and seal the collection trough. A spring of No. 1 is provided between the sliding plate 198 and the inner box 193. The spring of No. 1 is provided to push the sliding plate 198 back to its original position. A spring of No. 2 is provided between the telescopic rod 196 and the sliding plate 198. The torsion spring of No. 2 is provided to drive the telescopic rod 196 back to its original position. The top of the telescopic rod 196 is provided with a slope.

[0029] In this embodiment, when the chuck 10 is fixed to the front frame 3, the chuck 10 will rotate due to contact with the front frame 3. The rotation of the chuck 10 will cause the pressure plate 181 to move. The movement of the pressure plate 181 will push the rotating pressure plate 189 to rotate. The rotation of the rotating pressure plate 189 will pull the first hydraulic rod 182 to slide away from the first hydraulic cylinder 183. The movement of the first hydraulic rod 182 away from the first hydraulic cylinder 183 will draw the liquid inside the second hydraulic cylinder 184 into the first hydraulic cylinder 183. When the liquid inside cylinder 184 decreases, it pulls hydraulic rod 185 towards the inside of cylinder 184. As hydraulic rod 185 moves towards cylinder 184, it loses contact with fixed rod 16, releasing the limit on fixed rod 16. This allows fixed rod 16 to rotate and release the welding gun 4, preventing welding from occurring before the front frame 3 and energy-absorbing beam 2 are properly fixed. This also prevents misalignment during welding of the front frame 3 and energy-absorbing beam 2, thus avoiding welding deviations. When clamping plate 8 pushes slowly... When the impact plate 11 fixes the energy-absorbing beam 2, the buffer plate 11 will be unable to move further due to contact with the energy-absorbing beam 2. Since the clamping plate 8 will continue to move towards the energy-absorbing beam 2, the distance between the clamping plate 8 and the buffer plate 11 will continuously decrease. This decreasing distance will push the connecting rod 188 towards the telescopic scraper 187. The connecting rod 188 will then push the telescopic scraper 187 to rotate towards the energy-absorbing beam 2. The rotation of the telescopic scraper 187 will drive the round rod 186 to rotate, and the rotation of the round rod 186 will cause the fourth torsion spring to... After the front frame 3 and the energy-absorbing beam 2 are welded together, the fixing of the front frame 3 and the energy-absorbing beam 2 will be released. Then the buffer plate 11 will gradually move away from the clamping plate 8. As the buffer plate 11 moves away from the clamping plate 8, the buffer plate 11 will drive the connecting rod 188 to move away from the telescopic scraper 187. The telescopic scraper 187 will be driven by the fourth torsion spring to rotate back to its original position. The rotation of the telescopic scraper 187 will scrape the welded position of the front frame 3 and the energy-absorbing beam 2 and clean the welding slag on the surface of the front frame 3 and the energy-absorbing beam 2.

[0030] Link 188 pushes the telescopic scraper 187 to rotate toward the energy-absorbing beam 2. The rotation of the telescopic scraper 187 drives the round rod 186 to rotate. The rotation of the round rod 186 pulls the soft rope to wind up. When the soft rope winds up, it pulls the telescopic cover 191 to rotate and seal the collection trough. The rotation of the telescopic cover 191 pushes the sixth torsion spring to store force. After welding is completed, the round rod 186 will rotate back to its original position. When the round rod 186 rotates back to its original position, the wound soft rope will be released. Then the sixth torsion spring will drive the telescopic cover 191 to rotate toward the telescopic rod 196, and the collection trough will be opened. The scraped welding slag will enter the inner box 193 through the collection trough. When the telescopic cover 191 rotates, the plate inside the telescopic cover 191 will move outward. Then the telescopic cover 191 will contact the telescopic rod 196. The telescopic cover 191 will push the telescopic rod 196. 96 moves towards the inclined plate 197. The movement of the telescopic rod 196 will drive the sliding plate 198 to move. The movement of the sliding plate 198 will push the first spring to store force. When the telescopic cover 191 loses contact with the telescopic rod 196, the first spring will push the sliding plate 198 to move. The movement of the sliding plate 198 will push the collected welding slag towards the center of the inner box 193 to prevent the welding slag from accumulating inside the inner box 193. When it is necessary to centrally process the welding slag inside the inner box 193, the inner box 193 will be pulled out. When the inner box 193 is pulled out, it will lose its obstruction to the rotating rod 194. When the obstruction of the rotating rod 194 is released, the limit of the rotating plate 195 will be released. Then the seventh torsion spring will push the rotating plate 195 to rotate and seal the collection groove, so that the welding slag will be temporarily stored on the surface of the rotating plate 195 when the inner box 193 is pulled out.

[0031] 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 variations 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. A welding device for a crash absorbing energy structure of a front end of an automobile, comprising a support frame (1), characterized in that: The support frame (1) top is placed with front frame (3), the front frame (3) top is placed with energy-absorbing beam (2), the support frame (1) bottom fixed mounting has motor (5), the output of motor (5) fixed mounting has lead screw (6), the support frame (1) away from motor (5) one rotation installation has fixed rod (16), the support frame (1) close to fixed rod (16) one side fixed mounting has square board (17), the square board (17) close to fixed rod (16) one side is set with sliding slot, the fixed rod (16) and sliding slot inner wall contact, the fixed rod (16) inside is placed with welding gun (4), the support frame (1) top is also equipped with fixing device; The fixing device further comprises; Turn plate (7), clamping plate (8), sliding plate (9), chuck (10), buffer plate (11), sliding block (12), rotating rod (13), bolt (14) and fixing piece (15), the sliding plate (9) slidingly installed on the top of the support frame (1), the chuck (10) is rotatably installed on the top of the sliding plate (9), the turn plate (7) is rotatably installed on the top of the support frame (1), the clamping plate (8) is slidingly installed on the top of the support frame (1), the buffer plate (11) is fixedly installed on the side of the clamping plate (8) close to the front frame (3), the sliding block (12) is slidingly installed on the top of the clamping plate (8), the rotating rod (13) is rotatably installed on both sides of the sliding block (12), the bolt (14) is rotatably installed on the top of the sliding block (12), and the fixing piece (15) is rotatably installed on the side of the clamping plate (8) close to the front frame (3). Wherein, the top of the support frame (1) is also provided with cleaning device for scraping the welding part of the front frame (3) and energy-absorbing beam (2) and collecting device for collecting welding slag.

2. The welding device for the anti-collision energy-absorbing structure of the front end of an automobile according to claim 1, characterized in that: The top of the rotating rod (13) is provided with a circular hole, the bolt (14) is in contact with the inside of the circular hole, the side of the sliding block (12) close to the fixing piece (15) is provided with a fixing groove, and the fixing piece (15) is in contact with the inside of the fixing groove.

3. The welding device for the anti-collision energy-absorbing structure of the front end of an automobile according to claim 2, characterized in that: A first torsion spring is arranged between the turn plate (7) and the support frame (1), a second torsion spring is arranged between the bolt (14) and the sliding block (12), and a third torsion spring is arranged between the fixing piece (15) and the clamping plate (8).

4. The welding device for the anti-collision energy-absorbing structure of the front end of an automobile according to claim 3, characterized in that: The cleaning device comprises a pressing plate (181), a first hydraulic rod (182), a first hydraulic cylinder (183), a second hydraulic cylinder (184), a second hydraulic rod (185) and a rotating pressing plate (189), the pressing plate (181) is fixedly installed on the side of the chuck (10) away from the clamping plate (8), the first hydraulic cylinder (183) is fixedly installed on the side of the sliding plate (9) away from the chuck (10), the first hydraulic rod (182) is slidably installed on the inner wall of the first hydraulic cylinder (183), the second hydraulic cylinder (184) is fixedly installed on the side of the support frame (1) close to the welding gun (4), the second hydraulic rod (185) is slidably installed on the inner wall of the second hydraulic cylinder (184), the first hydraulic cylinder (183) and the second hydraulic cylinder (184) are communicated through a hose, the rotating pressing plate (189) is rotatably installed on the side of the sliding plate (9) close to the first hydraulic cylinder (183), and the first hydraulic rod (182) is rotatably connected with the bottom of the rotating pressing plate (189).

5. The welding device for the anti-collision energy-absorbing structure of the front end of an automobile according to claim 4, characterized in that: The cleaning device further comprises a round rod (186), an extendable scraper (187) and a connecting rod (188), the round rod (186) is rotatably installed on the inner wall of the clamping plate (8), the extendable scraper (187) is slidably installed on the circumferential surface of the round rod (186), and the connecting rod (188) is fixedly installed at one end of the bottom of the buffer plate (11) and slidably installed at the other end of the inner wall of the clamping plate (8).

6. The welding device for the anti-collision energy-absorbing structure of the front end of an automobile according to claim 5, characterized in that: The connecting rod (188) is in contact with the extendable scraper (187), the first hydraulic rod (182) slidably penetrates the square plate (17) and the fixed rod (16), the round rod (186) and the clamping plate (8) are provided with a fourth torsional spring, and the rotating pressing plate (189) and the sliding plate (9) are provided with a fifth torsional spring.

7. The welding device for the anti-collision energy-absorbing structure of the front end of an automobile according to claim 6, characterized in that: The collecting device comprises an extendable cover plate (191), an outer frame (192), an inner box (193), a rotating rod (194), a rotating plate (195), an extendable rod (196), an inclined plate (197) and a sliding plate (198), the top of the support frame (1) is provided with a collecting groove, the extendable cover plate (191) is rotatably installed on the inner wall of the collecting groove, the extendable cover plate (191) is connected with the round rod (186) through a soft rope, the outer frame (192) is fixedly installed on the bottom of the support frame (1), the inner box (193) is slidably installed on the inner wall of the outer frame (192), the inner wall of the collecting groove is provided with a square groove, the rotating plate (195) is rotatably installed on the inner wall of the square groove, the rotating rod (194) is fixedly installed on the side of the rotating plate (195) away from the extendable cover plate (191), the sliding plate (198) is slidably installed on the inner wall of the bottom of the inner box (193), one end of the inclined plate (197) is slidably installed on the inner wall of the inner box (193), the other end of the inclined plate (197) is rotatably installed on the top of the sliding plate (198), and the extendable rod (196) is slidably installed on the inner wall of the sliding plate (198).

8. The welding device for the anti-collision energy-absorbing structure of the front end of an automobile according to claim 7, characterized in that: The telescopic cover plate (191) is provided with a No. 6 torsion spring between the collecting groove, the rotating plate (195) is provided with a No. 7 torsion spring between the square groove, the sliding plate (198) is provided with a No. 1 spring between the inner box (193), the telescopic rod (196) is provided with a No. 2 spring between the sliding plate (198), and the telescopic rod (196) is provided with an inclined surface at the top.

Images