A protection device for stamping and welding processing of automobile shock absorber stamping parts

Abstract

The present application belongs to the technical field of automobile parts welding, in particular to a protection device for automobile shock absorber stamping part welding processing, which comprises an electrical cabinet and a chassis fixed on the top of the electrical cabinet, further comprising: a rotating disc coaxially arranged above the chassis, a plurality of annularly distributed circular holes are arranged on the surface of the rotating disc, and a supporting plate is rotatably arranged in the circular hole, the supporting plate is used for supporting the shock absorber barrel, the chassis is provided with a transposition rotating mechanism for driving the rotating disc to rotate, and the chassis is provided with a welding rotating mechanism for driving the supporting plate to rotate. The present application can realize multi-station alternating operation of workpieces, synchronously complete welding, cooling and feeding and discharging processes, improve the overall welding processing efficiency, isolate and cool the workpieces after welding, reduce the risk of scalding for the operator, reduce the interference of temperature fluctuation on the air tightness detection result, stabilize the screening of poorly welded workpieces, and improve the welding quality of finished products.

Description

Technical Field

[0001] This invention belongs to the field of automotive parts welding technology, and in particular relates to a protective device for welding stamped automotive shock absorber parts. Background Technology

[0002] Shock absorbers for new energy vehicles are used to buffer driving bumps, suppress vehicle vibration, and ensure a smooth ride. The oil reservoir is composed of a cylinder body and a stamped bottom cover. The two must be connected in a ring seal. The weld must have reliable sealing and fatigue resistance to avoid oil leakage and failure during use.

[0003] Currently, resistance welding is commonly used when welding the cylinder body and the stamping cover. This process mainly utilizes the Joule heating generated by the current passing through the overlapping area of ​​the workpiece, combined with continuous pressure from a pair of disc-shaped copper electrodes, to complete the annular sealing weld between the cylinder body and the stamping cover. However, during the welding operation, the high current continuously generates heat, and the welding area between the disc-shaped copper electrodes and the workpiece accumulates heat for a long time, causing the welded part of the workpiece to maintain a high temperature. Although there is a short period of static cooling after each welding cycle, the cooling time is limited, and the workpiece is not sufficiently cooled. If the operator's hands or arms accidentally come into contact with the high-temperature area when loading, unloading, or repairing the tooling, there is still a risk of skin burns, posing a continuous operational safety hazard. Summary of the Invention

[0004] The purpose of this invention is to address the above-mentioned problems by providing a protective device for welding stamped parts of automotive shock absorbers that can effectively cool down the welding area of ​​the shock absorber and improve welding efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a protective device for welding stamping parts of automotive shock absorbers, comprising an electrical cabinet and a chassis fixed to the top of the electrical cabinet, and further comprising:

[0006] A rotating disk is coaxially disposed above the chassis. The surface of the rotating disk has multiple annularly distributed circular holes, and a support plate is rotatably disposed inside the circular holes. The support plate is used to support the shock absorber cylinder body. The chassis is equipped with a shifting rotation mechanism to drive the rotating disk to rotate, and a welding rotation mechanism to drive the support plate to rotate.

[0007] An arc-shaped cover is coaxially disposed above the rotating disk and fixed to the upper surface of the chassis. The arc-shaped cover is fitted over the shock absorber stamping cover, and an arc-shaped through hole is provided on the upper surface of the arc-shaped cover.

[0008] A protective cover is fixedly connected to the arc-shaped cover, and the side wall of the protective cover has an opening. The protective cover is fitted onto the outside of the roll welding mechanism.

[0009] An air supply unit is located on the chassis and is connected to the interior of the arc-shaped cover.

[0010] In the aforementioned protective device for welding stamping parts of automotive shock absorbers, the shifting and rotating mechanism includes a support shaft fixed to the bottom of a rotating disk, and the support shaft is rotatably connected to the chassis. A gear ring is fixedly sleeved on the support shaft. A shifting and rotating motor is fixed to the bottom of the chassis, and a transmission gear that meshes with the gear ring is fixed to the output shaft of the shifting and rotating motor.

[0011] In the aforementioned protective device for welding stamping parts of an automotive shock absorber, the welding rotation mechanism includes a first through hole on the surface of the chassis. A movable seat is provided inside the first through hole. A welding rotation motor is fixed to the bottom of the movable seat. The output shaft of the welding rotation motor extends rotatably to the top of the movable seat and is fixedly connected to a circular groove plate. The circular groove plate is located below a support plate on the same side. A first U-shaped plate is fixed to the bottom of the chassis, and a first hydraulic cylinder is fixedly inserted into the first U-shaped plate. A support frame for supporting the movable seat is fixed to the movable end of the first hydraulic cylinder.

[0012] In the aforementioned protective device for welding stamping parts of automotive shock absorbers, the air supply unit includes a second through hole on the surface of the chassis, a mounting base is provided inside the second through hole, an air pump is fixed at the bottom of the mounting base, a distribution pipe is connected to the air supply end of the air pump, an air guide cover is fixedly connected to the top of the arc-shaped cover at the position outside the arc-shaped through hole, the air guide cover and the distribution pipe are fixedly connected to a connecting hose, and an inner support mechanism is connected to the support plate.

[0013] In the aforementioned protective device for welding stamping parts of automotive shock absorbers, the inner support mechanism includes an upper connecting pipe fixed to the bottom of a support plate. A support pipe connected to the upper connecting pipe is fixed to the top of the support plate. A lower hollow circular plate is fixedly connected to the top of the support pipe. A connecting pipe is fixedly inserted into the top of the lower hollow circular plate. The top of the connecting pipe is fixedly connected to the upper hollow circular plate. The upper hollow circular plate is located inside the shock absorber stamping cover. Both the lower and upper hollow circular plates are fitted with uniformly distributed annular arc-shaped... The pressure plate, the lower hollow circular plate and the upper hollow circular plate are both equipped with a top pressure assembly that drives the arc-shaped pressure plate to move horizontally, the air pump is fixedly connected to a three-way valve at the air supply end, the diverter pipe is connected to one of the air outlets of the three-way valve, the chassis is provided with a third through hole below the support plate on the side of the protective cover opening, the third through hole is provided with a docking seat inside, the chassis is provided with a docking air supply assembly connected to the air outlet of the three-way valve below, and the docking air supply assembly supplies air into the upper docking pipe, the upper docking pipe is equipped with a one-way valve inside.

[0014] In the aforementioned protective device for welding stamping parts of automotive shock absorbers, the top pressure assembly includes multiple cylinders, which are evenly distributed in a ring on the inner side of the lower hollow circular plate and the upper hollow circular plate. A piston rod is slidably connected inside the cylinder, and the piston rod extends slidably to the outer side of the lower hollow circular plate and the upper hollow circular plate. The arc-shaped pressure plate is fixed to the end of the piston rod, and a support spring is fixed between the piston rod and the cylinder.

[0015] In the aforementioned protective device for welding stamping parts of automotive shock absorbers, the docking air supply assembly includes a second U-shaped plate fixed to the bottom of the chassis. A second hydraulic cylinder is fixedly inserted into the surface of the second U-shaped plate. A lifting plate is fixed to the movable end of the second hydraulic cylinder. The mounting seat and the docking seat are both fixed to the surface of the lifting plate. A connecting column is fixed to the top of the docking seat. A first lower docking pipe that matches the upper docking pipe is fixed to the top of the connecting column. One of the air outlets of the three-way valve is fixedly connected to the second lower docking pipe. The second lower docking pipe and the first lower docking pipe are jointly fixedly connected to an air supply bend.

[0016] In the aforementioned protective device for welding stamping parts of automotive shock absorbers, a vent pipe is fixedly inserted into the top of the upper hollow circular plate, and a venting solenoid valve is installed inside the vent pipe. A pressure sensor and a temperature sensor are fixedly connected to the bottom of the upper hollow circular plate. A conductive ring assembly is fixed to the bottom of the support plate. Conductive column assemblies are fixed to the top of both the mounting base and the docking base. The venting solenoid valve, the pressure sensor, and the temperature sensor are electrically connected to the electrical cabinet through the conductive ring assembly and the conductive column assembly.

[0017] Compared with existing technologies, the present invention has the following advantages:

[0018] 1. This invention, through the design of a chassis, a rotating disk, a circular hole, a support plate, a shifting rotating mechanism, and a welding rotating mechanism, utilizes multiple rotatable workstations on the rotating disk to automatically switch between shock absorber workpieces to be welded. This allows the freshly welded shock absorber workpieces to rotate and wait for a period of time. In conjunction with the designed arc-shaped cover, arc-shaped through hole, protective cover, opening, and air supply unit, it not only assists in the sufficient cooling of the welded shock absorber, reducing the possibility of burns to workers, but also completes the loading and unloading of shock absorber workpieces during the welding process, which helps to improve the efficiency of welding processing.

[0019] 2. The present invention, through the internal support mechanism, can position the cylinder body and stamping cover of the shock absorber after the shock absorber workpiece is loaded, and apply outward support to the welding position from the inside of the cylinder body, so as to avoid deformation of the cylinder body caused by the pressure applied by the rolling welding mechanism, and also improve the welding stability between the cylinder body and the stamping cover. At the same time, it can make the cylinder body rotate stably and synchronously with the support plate, ensuring the rotational stability of the rolling welding.

[0020] 3. This invention, through the inclusion of a vent pipe, a vent control valve, a pressure sensor, a conductive ring assembly, and a conductive column assembly, enables the injection of high-pressure gas into the cylinder after welding using an internal support mechanism. Based on the pressure changes detected by the pressure sensor, the welding seal between the cylinder and the stamping cover is determined, thereby screening for defective welds to a certain extent. In conjunction with the included temperature sensor, the impact of temperature changes on pressure changes can be compensated, minimizing the impact of temperature variations on the accuracy of the cylinder seal assessment based on pressure. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural schematic diagram of a protective device for welding and processing stamped parts of automotive shock absorbers provided by the present invention;

[0022] Figure 2 This is a bottom view of the chassis structure provided by the present invention;

[0023] Figure 3 This is a schematic diagram of the surface structure of the chassis provided by the present invention;

[0024] Figure 4 This is a schematic diagram of the connection structure between the chassis and the rotating disk provided by the present invention;

[0025] Figure 5 This is a three-dimensional structural schematic diagram of the arc-shaped cover provided by the present invention;

[0026] Figure 6 This is a schematic diagram of the surface structure of the support plate provided by the present invention;

[0027] Figure 7 This is a schematic diagram of the bottom structure of the support plate provided by the present invention;

[0028] Figure 8 This is a cross-sectional structural schematic diagram of the internal support mechanism provided by the present invention;

[0029] Figure 9 This invention provides Figure 8 Enlarged view of the structure of section A;

[0030] Figure 10 This is a three-dimensional structural diagram of the hollow circular plate provided by the present invention.

[0031] In the diagram: 1. Electrical cabinet; 2. Chassis; 3. Rotary disc; 4. Circular hole; 5. Support plate; 6. Shock absorber cylinder; 7. Rotating mechanism; 71. Support shaft; 72. Gear ring; 73. Rotating motor; 74. Transmission gear; 8. Welding rotating mechanism; 81. First through hole; 82. Movable seat; 83. Welding rotating motor; 84. Circular groove plate; 85. First U-shaped plate; 86. First hydraulic cylinder; 87. Support frame; 9. Arc-shaped cover; 10. Shock absorber stamping cover; 11. Arc-shaped through hole; 12. Protective cover; 13. Opening; 14. Roll welding mechanism; 15. Air supply unit; 151. Second through hole; 152. Mounting seat; 153. Air pump; 154. Diverter pipe; 155. Air guide cover; 156. Connecting hose; 16. Inner support Support mechanism; 161. Upper connecting pipe; 162. Support pipe; 163. Lower hollow circular plate; 164. Conductor pipe; 165. Upper hollow circular plate; 166. Arc-shaped pressure plate; 167. Three-way valve; 168. Third through hole; 169. Docking seat; 170. One-way valve; 17. Top pressure assembly; 171. Cylinder; 172. Piston rod; 173. Support spring; 18. Docking air supply assembly; 181. Second U-shaped plate; 182. Second hydraulic cylinder; 183. Lifting plate; 184. Connecting column; 185. First lower connecting pipe; 186. Second lower connecting pipe; 187. Air supply bend; 19. Vent pipe; 20. Vent solenoid valve; 21. Air pressure sensor; 22. Temperature sensor; 23. Conductive ring assembly; 24. Conductive column assembly. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0033] like Figures 1-5As shown, a protective device for welding stamped parts of an automotive shock absorber includes an electrical cabinet 1 and a chassis 2 fixed to the top of the electrical cabinet 1. The device also includes a rotating disk 3, an arc-shaped cover 9, a protective cover 12, and an air supply unit 15. The rotating disk 3 is coaxially positioned above the chassis 2. Multiple annularly distributed circular holes 4 are formed on the surface of the rotating disk 3, and a support plate 5 is rotatably mounted inside each hole 4. The support plate 5 supports the shock absorber cylinder 6. The chassis 2 is equipped with a shifting rotation mechanism 7 that drives the rotating disk 3 to rotate, and a welding rotation mechanism 8 that drives the support plate 5 to rotate. The arc-shaped cover 9 is coaxially positioned above the rotating disk 3 and fixed to the chassis 2. On the surface, an arc-shaped cover 9 is fitted above the shock absorber stamping cover 10, and an arc-shaped through hole 11 is opened on the upper surface of the arc-shaped cover 9; a protective cover 12 is fixedly connected to the arc-shaped cover 9, and an opening 13 is opened on the side wall of the protective cover 12, and the protective cover 12 is fitted on the outside of the rolling welding mechanism 14; an air supply unit 15 is set at the chassis 2 and is connected to the inside of the arc-shaped cover 9; the rolling welding mechanism 14 includes at least two resistance welding copper discs set on both sides of the shock absorber cylinder 6, which are rotatable; an adjusting hydraulic cylinder is inserted into the side wall of the protective cover 12, and the movable end of the adjusting hydraulic cylinder is fixedly connected to the outer shell of the resistance welding copper disc, which is used to drive the resistance welding copper disc to abut against the side wall of the shock absorber cylinder 6.

[0034] In actual welding, this embodiment uses the multi-station rotary table 3 structure to achieve parallel operation of welding, cooling and loading / unloading stations. The protective cover 12 and the arc-shaped cover 9 form a closed protective area, which physically isolates the high-temperature welding area from the manual operation area, effectively reducing the probability of personnel directly touching the high-temperature welding position. At the same time, the air supply unit 15 accelerates the heat dissipation and cooling of the workpiece after welding, which can effectively improve welding safety.

[0035] like Figure 3 and Figure 4 As shown, further, in this embodiment, the shifting and rotating mechanism 7 includes a support shaft 71 fixed to the bottom of the rotating disk 3, and the support shaft 71 is rotatably connected to the chassis 2. A gear ring 72 is fixedly sleeved on the support shaft 71. A shifting and rotating motor 73 is fixed to the bottom of the chassis 2, and a transmission gear 74 that meshes with the gear ring 72 is fixed to the output shaft of the shifting and rotating motor 73. The shifting and rotating motor 73 adopts a stepper servo motor, and the single rotation angle is precisely controlled to 60°. The rotation positioning accuracy is ≤±0.5°. Six sets of workstations are evenly distributed in a ring on the rotating disk 3, and the coaxiality error of the workstations is ≤0.1mm.

[0036] In actual welding, this embodiment uses a rotary motor 73 to drive the workpiece station to switch quickly. This allows the workpiece that has just completed high-temperature welding to be automatically transferred into the arc-shaped cover 9 for static cooling. It also avoids the manual loading and unloading operation areas, minimizing the risk of operators accidentally touching the high-temperature workpiece and getting burned. At the same time, it enables multiple processes such as welding, cooling, and loading and unloading to be carried out in parallel, which helps to improve the overall welding processing efficiency.

[0037] like Figure 3 and Figure 4 As shown, further, in this embodiment, the welding rotation mechanism 8 includes a first through hole 81 opened on the surface of the chassis 2. A movable seat 82 is provided inside the first through hole 81. A welding rotation motor 83 is fixed at the bottom of the movable seat 82. The output shaft of the welding rotation motor 83 extends rotatably to the top of the movable seat 82 and is fixedly connected to a circular groove plate 84. The circular groove plate 84 is located below the support plate 5 on the same side. A first U-shaped plate 85 is fixed at the bottom of the chassis 2, and a first hydraulic cylinder 86 is fixedly inserted into the first U-shaped plate 85. A support frame 87 supporting the movable seat 82 is fixed at the movable end of the first hydraulic cylinder 86. The welding rotation motor 83 is a speed-regulating servo motor with a rated speed of 1500 r / min, a working speed regulation range of 0-800 r / min, and a running speed fluctuation of ≤±5 r / min. A limit switch is installed at the first hydraulic cylinder 86 to control the docking stroke of the first hydraulic cylinder 86.

[0038] In actual welding, this embodiment uses the first hydraulic cylinder 86 to push the support frame 87, the movable seat 82, and the circular groove plate 84 upward as a whole, so that the circular groove plate 84 and the support plate 5 are stably fitted and limited. With the help of the welding rotary motor 83, the support plate 5 and the workpiece are rotated at a uniform speed, which allows the double-sided resistance welding copper disc to make uniform contact welding with the workpiece weld, so that the roll welding nugget overlaps in an orderly manner, maintains the continuity of the weld, and can be adapted to the processing requirements of ring roll welding.

[0039] like Figure 3 , Figure 4 and Figure 6 As shown, further, in this embodiment, the air supply unit 15 includes a second through hole 151 opened on the surface of the chassis 2. A mounting base 152 is provided inside the second through hole 151. An air pump 153 is fixed at the bottom of the mounting base 152. The air supply end of the air pump 153 is connected to a diversion pipe 154. An air guide cover 155 is fixedly connected to the top of the arc-shaped cover 9 at the position outside the arc-shaped through hole 11. The air guide cover 155 and the diversion pipe 154 are fixedly connected to a connecting hose 156. The support plate 5 is connected to an inner support mechanism 16. The rated output air pressure of the air pump 153 is 1.2MPa, and the stable working air pressure range is 0-1.0MPa.

[0040] During actual welding, this embodiment provides a stable air-cooled airflow through an independent air supply unit 15. After being split and guided, the airflow evenly covers the surface of the workpiece inside the arc-shaped cover 9, which can quickly remove the high-temperature heat accumulated in the workpiece after welding, shorten the high-temperature static time of the workpiece, and reduce the risk of burns when manually handling the workpiece.

[0041] like Figure 6 and Figure 8As shown, further, in this embodiment, the inner support mechanism 16 includes an upper connecting pipe 161 fixed to the bottom of the support plate 5, a support pipe 162 connected to the upper connecting pipe 161 fixed to the top of the support plate 5, a lower hollow circular plate 163 fixedly connected to the top of the support pipe 162, a connecting pipe 164 fixedly inserted into the top of the lower hollow circular plate 163, and an upper hollow circular plate 165 fixedly connected to the top of the connecting pipe 164. The upper hollow circular plate 165 is disposed inside the shock absorber stamping cover 10. Both the lower hollow circular plate 163 and the upper hollow circular plate 165 are fitted with annularly distributed arc-shaped pressure plates 166 on their outer sides. Both the lower hollow circular plate 163 and the upper hollow circular plate 165 are equipped with driving arc-shaped pressure plates 166. The top pressure assembly 17 moves horizontally. The air pump 153 is fixedly connected to a three-way valve 167 at its air supply end. The diverter pipe 154 is connected to one of the air outlets of the three-way valve 167. The chassis 2 has a third through hole 168 below the support plate 5 on one side of the opening 13 of the protective cover 12. The third through hole 168 has a docking seat 169 inside. The chassis 2 has a docking air supply assembly 18 connected to the air outlet of the three-way valve 167 below it. The docking air supply assembly 18 supplies air to the upper docking pipe 161. A one-way valve 170 is installed inside the upper docking pipe 161. The top of the upper hollow circular plate 165 is fixed with a positioning column (not shown in the figure) for vertical positioning of the shock absorber stamping cover 10.

[0042] In actual welding, this embodiment uses the lower hollow circular plate 163 and the upper hollow circular plate 165 in conjunction with the corresponding arc-shaped pressure plate 166 to achieve adaptive top support positioning from the inside of the shock absorber cylinder 6 and the shock absorber stamping cover 10. This can buffer the external extrusion pressure generated during the double-sided copper disc roll welding, reduce the deformation of the shock absorber cylinder 6 under pressure and the misalignment of the lap surface, and maintain a uniform lap gap between the shock absorber cylinder 6 and the shock absorber stamping cover 10, which is beneficial to improving the welding stability and sealing of the circumferential weld.

[0043] like Figure 8 and Figure 9 As shown, in this embodiment, the top-pressing assembly 17 includes a plurality of cylinders 171, which are evenly distributed in a ring on the inner side of the lower hollow circular plate 163 and the upper hollow circular plate 165. A piston rod 172 is slidably connected inside the cylinder 171, and the piston rod 172 extends slidably to the outer side of the lower hollow circular plate 163 and the upper hollow circular plate 165. An arc-shaped pressing plate 166 is fixed to the end of the piston rod 172, and a support spring 173 is fixed between the piston rod 172 and the cylinder 171.

[0044] In actual welding, this embodiment uses air to pressurize the lower hollow circular plate 163 and the upper hollow circular plate 165, pushing the piston rod 172 to slide outward inside the cylinder 171, thereby causing the arc-shaped pressure plate 166 to move outward and fit against the inner wall of the workpiece. This achieves the inner support and positioning of the shock absorber cylinder 6 and the shock absorber stamping cover 10, which can reduce the loosening and displacement of the workpiece during welding and help maintain the fit of the overlapping surfaces.

[0045] like Figure 2 and Figure 4 As shown, further in this embodiment, the docking air supply assembly 18 includes a second U-shaped plate 181 fixed to the bottom of the chassis 2. A second hydraulic cylinder 182 is fixedly inserted into the surface of the second U-shaped plate 181. A lifting plate 183 is fixed to the movable end of the second hydraulic cylinder 182. The mounting base 152 and the docking base 169 are both fixed to the surface of the lifting plate 183. A connecting column 184 is fixed to the top of the docking base 169. A first lower docking pipe 185 matching the upper docking pipe 161 is fixed to the top of the connecting column 184. One of the air outlets of the three-way valve 167 is fixedly connected to the second lower docking pipe 186. The second lower docking pipe 186 and the first lower docking pipe 185 are jointly fixedly connected to the air supply bend 187. A sealing gasket (not shown in the figure) is provided at the docking surface of the first lower docking pipe 185 and the second lower docking pipe 186. A limit switch is installed at the second hydraulic cylinder 182 to control the docking stroke of the second hydraulic cylinder 182.

[0046] During actual welding, in this embodiment, the second hydraulic cylinder 182 drives the lifting plate 183 to move vertically, so that the first lower connecting pipe 185 and the second lower connecting pipe 186 above the lifting plate 183 approach and connect with the upper connecting pipe 161 at the bottom of the support plate 5, thus completing the pipe connection and sealing. This can form a sealed ventilation path inside the workpiece, which facilitates the inflation of air into the inner support mechanism 16. This can complete the inner wall support of the shock absorber cylinder 6 and the shock absorber stamping cover 10, as well as the subsequent sealing test.

[0047] like Figures 7-10As shown, further in this embodiment, a vent pipe 19 is fixedly inserted into the top of the upper hollow circular plate 165, and a vent solenoid valve 20 is installed inside the vent pipe 19. A pressure sensor 21 and a temperature sensor 22 are fixedly connected to the bottom of the upper hollow circular plate 165. A conductive ring assembly 23 is fixed to the bottom of the support plate 5. Conductive post assemblies 24 are fixed to the top of both the mounting base 152 and the docking base 169. The vent solenoid valve 20, the pressure sensor 21, and the temperature sensor 22 are electrically connected to the electrical cabinet 1 through the conductive ring assembly 23 and the conductive post assembly 24. The conductive ring assembly 23 includes at least multiple slots. An insulating ring is provided, and a conductive ring is installed in the groove of the insulating ring. The conductive post assembly 24 includes at least a plurality of insulating posts and conductive posts. The conductive posts are fixed on the top of the insulating posts. After the conductive posts are connected with the corresponding conductive rings, the circuit can be completed. The air pressure sensor 21 has a detection range of 0-1.0MPa and a detection accuracy of ±0.01MPa. The temperature sensor 22 has a detection range of 0-200℃ and a detection accuracy of ±1℃. A circular sleeve is fixed on the upper surface of the support plate 5, and a sealing sleeve is fixed on the inner wall of the circular sleeve (neither the circular sleeve nor the sealing sleeve is marked in the figure) to ensure the sealing of the connection between the shock absorber cylinder 6 and the support plate 5.

[0048] During actual welding, this embodiment uses a combination of a pressure sensor 21 and a temperature sensor 22 to detect and collect real-time air pressure and temperature data inside the shock absorber cylinder 6. Since the workpiece continues to dissipate heat and cool down after welding, the internal temperature of the shock absorber cylinder 6 changes accordingly. This temperature change indirectly causes fluctuations in gas pressure, which can easily interfere with the pressure detection results. Therefore, the temperature data collected by the temperature sensor 22 can be used to refer to the pressure fluctuations caused by temperature changes, assisting operators in determining the pressure drop based on the magnitude of the drop. Specifically, for every 10°C decrease in gas temperature, the pressure drops by approximately 0.032 MPa. By detecting the temperature after inflation and then measuring the temperature after cooling, the theoretical pressure drop due to temperature decrease is calculated. By comparing the actual pressure value fed back by the pressure sensor 21 with this theoretical value, the sealing status of the weld between the shock absorber cylinder 6 and the shock absorber stamping cover 10 can be determined. If the actual pressure value is 0.01 MPa lower than the theoretical value, the seal is considered poor.

[0049] The operation process of the present invention is as follows: the welded shock absorber cylinder body 6 is installed on the support plate 5 on the side of the opening 13 of the protective cover 12, and the electrical cabinet 1 controls the operation of the shifting rotary motor 73, which, in conjunction with the transmission gear 74 and the gear ring 72, drives the support shaft 71 to rotate the rotating disk 3 by 60°, so that the welded shock absorber cylinder body 6 enters the inner side of the protective cover 12. Then, another welded shock absorber cylinder body 6 is installed, and the rotating disk 3 is driven to rotate 60° again. Then, the shock absorber cylinder body 6 to be welded can be installed upside down on the top of the support plate 5, and the shock absorber stamping cover 10 is inserted into the bottom end of the shock absorber cylinder body 6.

[0050] Subsequently, electrical cabinet 1 controls the second hydraulic cylinder 182 to operate. The second hydraulic cylinder 182 drives the lifting plate 183 to move the mounting base 152 and docking base 169 upward, so that the first lower connecting pipe 185 and the second lower connecting pipe 186 are connected and abutted against the upper connecting pipe 161. Then, the air outlet end of the three-way valve 167 connected to the second lower connecting pipe 186 is opened, and the air pump 153 is turned on. The gas output by the air pump 153 enters the second lower connecting pipe 186 through the three-way valve 167. Subsequently, a part of the gas enters the support through the upper connecting pipe 161 on this side. Inside pipe 162, another part of the gas enters the corresponding support pipe 162 through gas supply bend 187, first lower connecting pipe 185 and upper connecting pipe 161. Then the gas enters the lower hollow circular plate 163 and upper hollow circular plate 165. As the gas pressure increases, the piston rod 172 is pushed outward, which can push the arc-shaped pressure plate 166 to move outward. The arc-shaped pressure plate 166 at the lower hollow circular plate 163 abuts against the inner wall of the shock absorber cylinder 6, and the arc-shaped pressure plate 166 at the upper hollow circular plate 165 abuts against the inner wall of the shock absorber stamping cover 10.

[0051] Subsequently, the rotary motor 73 drives the rotary disk 3 to rotate again, causing the shock absorber cylinder 6 to be welded and the shock absorber stamping cover 10 to enter the inner side of the protective cover 12. At this time, the electrical cabinet 1 controls the first hydraulic cylinder 86 to work, causing the circular groove plate 84 to abut against the bottom of the support plate 5 on this side. Then, the welding rotary motor 83 drives the circular groove plate 84 to rotate. Since the circular groove plate 84 abuts against the support plate 5, the support plate 5 can rotate synchronously. The support plate 5 is supported by the support tube 162, the lower hollow circular plate 163, and the upper hollow circular plate. 165. The piston rod 172 and the arc-shaped pressure plate 166 cause the shock absorber cylinder 6 and the shock absorber stamping cover 10 to rotate synchronously, and the roller welding mechanism 14 simultaneously performs roller welding on the shock absorber cylinder 6 and the shock absorber stamping cover 10. During welding, new shock absorber cylinder 6 and shock absorber stamping cover 10 to be welded are installed on the support plate 5. After welding, the first hydraulic cylinder 86 drives the circular groove plate 84 to move back to its original position, and the rotating disk 3 is driven to rotate by the shifting rotary motor 73, so that the roller welding work can be continuously carried out.

[0052] Since the welded shock absorber cylinder 6 and shock absorber stamping cover 10 are located inside the protective cover 12 and are driven into the arc-shaped cover 9 by the rotating disk 3, the workers cannot directly contact the welded shock absorber cylinder 6 and shock absorber stamping cover 10, which can improve safety.

[0053] After the air is filled into the upward connecting pipe 161, the electrical cabinet 1 controls the movable end of the second hydraulic cylinder 182 to reset and controls the three-way valve 167 to connect to the air outlet end connected to the diversion pipe 154. Then the airflow output by the air pump 153 enters the air guide cover 155 through the diversion pipe 154 and the connecting hose 156, and finally exits through the arc-shaped through hole 11. The heat of the shock absorber cylinder 6 and the shock absorber stamping cover 10 inside the arc-shaped cover 9 will be carried away by the airflow, thereby assisting the shock absorber cylinder 6 and the shock absorber stamping cover 10 to cool down.

[0054] Simultaneously, after the second lower connecting pipe 186 is connected to the upper connecting pipe 161, the gas output by the air pump 153 enters the lower hollow circular plate 163 and the upper hollow circular plate 165 inside the welded shock absorber cylinder 6. The electrical cabinet 1 then controls the venting valve 20 to open, allowing gas to quickly fill the shock absorber cylinder 6. Once the air pressure sensor 21 detects that the air pressure has reached 0.8 MPa, the movable end of the second hydraulic cylinder 182 resets, causing the upper connecting pipe 161 to connect with the second lower connecting pipe 161. When the connector 186 is disconnected, the gas inside the shock absorber cylinder 6 cannot be discharged due to the action of the one-way valve 170. If there is a deviation in the welding, resulting in poor sealing between the shock absorber cylinder 6 and the shock absorber stamping cover 10, the high-pressure gas inside the shock absorber cylinder 6 will leak out through the seal failure. As the shock absorber cylinder 6 is cooled inside the arc-shaped cover 9, the gas pressure inside the shock absorber cylinder 6 will decrease. When the cooled shock absorber cylinder 6 moves to the loading / unloading position, the first... After the lower connecting pipe 185 is connected to the upper connecting pipe 161, the electrical cabinet 1 receives the air pressure signal fed back by the air pressure sensor 21, which can determine the welding seal between the shock absorber cylinder 6 and the shock absorber stamping cover 10. The electrical cabinet 1 will issue a buzzer warning if the seal is not good. When the cooled shock absorber cylinder 6 moves to the loading and unloading station, the electrical cabinet 1 first controls the second hydraulic cylinder 182 to work, so that the upper connecting pipe 161 is connected to the first lower connecting pipe 185 and the second lower connecting pipe 186. Then, the air pressure sensor 21 and the temperature sensor 22 are used to determine whether the air pressure inside the shock absorber cylinder 6 is qualified. After the determination, the shock absorber cylinder 6 needs to be removed and a new shock absorber cylinder 6 to be welded and the shock absorber stamping cover 10 need to be installed. Then, the control button is pressed, and the electrical cabinet 1 will perform the step of inflating the shock absorber cylinder 6. Alternatively, the total loading and unloading time can be set to 15 seconds. After 15 seconds, the electrical cabinet 1 will automatically perform the step of inflating the shock absorber cylinder 6 without pressing the button.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A protective device for automobile shock absorber stamping and welding processing, comprising an electrical cabinet (1) and a chassis (2) fixed on the top of the electrical cabinet (1), characterized in that, Also includes: A rotating disk (3) is coaxially arranged above the chassis (2). The surface of the rotating disk (3) is provided with a plurality of annularly distributed circular holes (4), and a support plate (5) is rotatably provided inside the circular holes (4). The support plate (5) is used to support the shock absorber cylinder (6). The chassis (2) is equipped with a shifting rotation mechanism (7) that drives the rotating disk (3) to rotate, and a welding rotation mechanism (8) that drives the support plate (5) to rotate. An arc-shaped cover (9) is coaxially disposed above the rotating disk (3) and fixed on the upper surface of the chassis (2). The arc-shaped cover (9) is sleeved above the shock absorber stamping cover (10). An arc-shaped through hole (11) is opened on the upper surface of the arc-shaped cover (9). The protective cover (12) is fixedly connected to the arc-shaped cover (9), and the side wall of the protective cover (12) has an opening (13). The protective cover (12) is sleeved on the outside of the rolling welding mechanism (14). An air supply unit (15) is located on the chassis (2) and is connected to the interior of the arc-shaped cover (9); The air supply unit (15) includes a second through hole (151) on the surface of the chassis (2). A mounting base (152) is provided inside the second through hole (151). An air pump (153) is fixed at the bottom of the mounting base (152). A diverter pipe (154) is connected to the air supply end of the air pump (153). An air guide cover (155) is fixedly connected to the top of the arc-shaped cover (9) at the position outside the arc-shaped through hole (11). The air guide cover (155) and the diverter pipe (154) are fixedly connected to a connecting hose (156). An inner support mechanism (16) is connected to the support plate (5).

2. The protective device for welding stamped parts of automotive shock absorbers according to claim 1, characterized in that, The shifting and rotating mechanism (7) includes a support shaft (71) fixed to the bottom of the rotating disk (3), and the support shaft (71) is rotatably connected to the chassis (2). The support shaft (71) is fixedly sleeved with a gear ring (72). The bottom of the chassis (2) is fixedly equipped with a shifting and rotating motor (73), and the output shaft of the shifting and rotating motor (73) is fixedly equipped with a transmission gear (74) that meshes with the gear ring (72).

3. The protective device for welding stamped parts of automotive shock absorbers according to claim 1, characterized in that, The welding rotation mechanism (8) includes a first through hole (81) on the surface of the chassis (2). A movable seat (82) is provided inside the first through hole (81). A welding rotation motor (83) is fixed at the bottom of the movable seat (82). The output shaft of the welding rotation motor (83) extends to the top of the movable seat (82) and is fixedly connected to a circular groove plate (84). The circular groove plate (84) is located below the support plate (5) on the same side. A first U-shaped plate (85) is fixed at the bottom of the chassis (2), and a first hydraulic cylinder (86) is fixedly inserted into the first U-shaped plate (85). A support frame (87) supporting the movable seat (82) is fixed at the movable end of the first hydraulic cylinder (86).

4. The protective device for welding stamped parts of automotive shock absorbers according to claim 1, characterized in that, The inner support mechanism (16) includes an upper connecting pipe (161) fixed to the bottom of the support plate (5). A support pipe (162) connected to the upper connecting pipe (161) is fixed to the top of the support plate (5). A lower hollow circular plate (163) is fixedly connected to the top of the support pipe (162). A connecting pipe (164) is fixedly inserted into the top of the lower hollow circular plate (163). An upper hollow circular plate (165) is fixedly connected to the top of the connecting pipe (164). The upper hollow circular plate (165) is located inside the shock absorber stamping cover (10). A ring-shaped evenly distributed arc-shaped pressure plate (166) is sleeved on the outer side of both the lower hollow circular plate (163) and the upper hollow circular plate (165). (165) are all equipped with a top pressure assembly (17) that drives the arc-shaped pressure plate (166) to move horizontally. The air pump (153) is fixedly connected to a three-way valve (167). The diversion pipe (154) is connected to one of the air outlets of the three-way valve (167). The chassis (2) has a third through hole (168) below the support plate (5) on the side of the opening (13) of the protective cover (12). The third through hole (168) is provided with a docking seat (169) inside. The chassis (2) is provided with a docking air supply assembly (18) connected to the air outlet of the three-way valve (167) below. The docking air supply assembly (18) supplies air to the upper docking pipe (161). The upper docking pipe (161) is equipped with a one-way valve (170) inside.

5. A protective device for welding stamped parts of automotive shock absorbers according to claim 4, characterized in that, The top-pressing assembly (17) includes a plurality of cylinders (171), which are evenly distributed in a ring on the inner side of the lower hollow circular plate (163) and the upper hollow circular plate (165). A piston rod (172) is slidably connected inside the cylinder (171), and the piston rod (172) extends slidably to the outer side of the lower hollow circular plate (163) and the upper hollow circular plate (165). The arc-shaped pressure plate (166) is fixed to the end of the piston rod (172), and a support spring (173) is fixed between the piston rod (172) and the cylinder (171).

6. A protective device for welding stamped parts of automotive shock absorbers according to claim 4, characterized in that, The docking air supply assembly (18) includes a second U-shaped plate (181) fixed to the bottom of the chassis (2), a second hydraulic cylinder (182) fixedly inserted into the surface of the second U-shaped plate (181), a lifting plate (183) fixed to the movable end of the second hydraulic cylinder (182), the mounting seat (152) and the docking seat (169) are both fixed to the surface of the lifting plate (183), a connecting column (184) is fixed to the top of the docking seat (169), a first lower docking pipe (185) matching the upper docking pipe (161) is fixed to the top of the connecting column (184), one of the air outlets of the three-way valve (167) is fixedly connected to the second lower docking pipe (186), and the second lower docking pipe (186) and the first lower docking pipe (185) are fixedly connected to the air supply bend (187).

7. A protective device for welding stamped parts of automotive shock absorbers according to claim 4, characterized in that, A vent pipe (19) is fixedly inserted into the top of the upper hollow circular plate (165). A vent valve (20) is installed inside the vent pipe (19). A pressure sensor (21) and a temperature sensor (22) are fixedly connected to the bottom of the upper hollow circular plate (165). A conductive ring assembly (23) is fixed to the bottom of the support plate (5). A conductive column assembly (24) is fixed to the top of the mounting base (152) and the docking base (169). The vent valve (20), the pressure sensor (21), and the temperature sensor (22) are electrically connected to the electrical cabinet (1) through the conductive ring assembly (23) and the conductive column assembly (24).

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