A support type automobile part automatic welding device

Abstract

This invention provides an automatic welding device for bracket-type automotive parts, belonging to the technical field of automotive parts welding processing equipment. It includes a protective mechanism comprising a robotic arm and a welding torch. A fixed ring is fixedly mounted on the lower part of the welding torch, and several protective covers are rotatably mounted on the lower end of the fixed ring to protect the welding torch. Several power components and lifting / tilting components are mounted on the lower end of the fixed ring to drive the protective covers. A limiting mechanism includes a retractable ring fixedly mounted on the lower end of the fixed ring, with a limiting component inside the retractable ring for limiting the lifting / tilting components. A deceleration mechanism includes several arc-shaped telescopic rods fixedly mounted on the outer ring side of the retractable ring, with a damping part at one end of each arc-shaped telescopic rod for resetting and decelerating the power components. This invention solves the problem that existing automatic welding devices cannot simultaneously prevent welding sparks and prevent burns during maintenance.

Description

Technical Field

[0001] This invention belongs to the technical field of automotive parts welding and processing equipment, specifically relating to an automatic welding device for bracket-type automotive parts. Background Technology

[0002] In recent years, the rapid development of the automotive industry has driven the continuous improvement of the automation level of parts manufacturing. As the core load-bearing components of the body and chassis, the precision and safety of the welding process of bracket-type automotive parts directly determine the performance and safety factor of the whole vehicle. Automatic welding equipment has become the core supporting equipment for the mass production of such parts.

[0003] Currently, most automatic welding equipment for bracket-type automotive parts on the market is equipped with fixed spark barriers or simple manual guards, which can only achieve basic spatter prevention. A few models equipped with automatic opening and closing protective structures still have significant shortcomings in field applications: during the welding operation, high-temperature molten slag and sparks are prone to splashing outwards, which can easily cause workpiece surface burns and burns to on-site operators; after welding, the welding torch body accumulates high temperatures for a long time without a reliable heat insulation protection structure, and during equipment maintenance and consumable replacement, workers are prone to accidentally touching the high-temperature torch body, causing burn accidents. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic welding device for bracket-type automotive parts, which aims to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: An automatic welding device for bracket-type automotive parts includes a protective mechanism, which includes a robotic arm and a welding torch. A fixing ring is fixedly installed at the lower part of the welding torch, and several protective covers are rotatably installed at the lower end of the fixing ring to protect the welding torch. Several power components and lifting and tilting components are installed at the lower end of the fixing ring to drive the several protective covers to protect the welding torch. The limiting mechanism includes a retractable ring fixedly disposed at the lower end of a fixed ring, and a limiting component is disposed inside the retractable ring. The limiting component is used to limit the lifting and tilting component. The deceleration mechanism includes several arc-shaped telescopic rods fixedly installed on the outer ring side of the retraction ring. One end of each arc-shaped telescopic rod is provided with a damping part, which is used to reset and decelerate the power component.

[0006] As a preferred embodiment of the automatic welding device for bracket-type automotive parts of the present invention, the power component includes a movable ring that passes through the connection between the fixed ring and the protective cover. The movable ring is fixedly connected to the fixed ring, and the movable ring is movably connected to the protective cover.

[0007] As a preferred embodiment of the automatic welding device for bracket-type automotive parts of the present invention, a plurality of spiral telescopic elements are sleeved on the movable ring. The spiral telescopic elements are energized to extend and retract, and a horizontal slider is fixedly provided at one end of the spiral telescopic elements.

[0008] As a preferred embodiment of the automatic welding device for bracket-type automotive parts of the present invention, the lifting and flipping assembly includes several arc-shaped back plates fixedly disposed at the lower end of the fixed ring, and the arc-shaped back plates are provided with inclined guide grooves, and guide rods are slidably disposed in the inclined guide grooves.

[0009] As a preferred embodiment of the automatic welding device for bracket-type automotive parts of the present invention, a strip-shaped back plate is slidably disposed on one side of the arc-shaped back plate, the strip-shaped back plate is fixedly connected to the horizontal slider, a vertical guide groove is provided on the strip-shaped back plate, a vertical slider is slidably disposed in the inner cavity of the vertical guide groove, and the vertical slider is fixedly connected to the guide rod.

[0010] As a preferred embodiment of the automatic welding device for bracket-type automotive parts of the present invention, a vertical connecting rod is fixedly provided at the lower end of the vertical slider, an inclined push rod is slidably provided at the lower end of the vertical connecting rod, a fixed rod is rotatably provided at one end of the inclined push rod, and one end of the fixed rod is fixedly connected to the strip-shaped back plate.

[0011] As a preferred embodiment of the automatic welding device for bracket-type automotive parts of the present invention, the limiting component includes a telescopic ring slidably disposed in the inner cavity of the retraction ring, and a plurality of pins are fixedly disposed at the upper end of the telescopic ring, and the plurality of pins respectively abut against a plurality of guide rods.

[0012] As a preferred embodiment of the automatic welding device for bracket-type automotive parts of the present invention, a hook is provided on one side of the pin and fixedly connected to the guide rod for further limiting.

[0013] As a preferred embodiment of the automatic welding device for bracket-type automotive parts of the present invention, the limiting component further includes an expansion bladder disposed in the inner cavity of the retraction ring, the expansion bladder expanding when heated.

[0014] As a preferred embodiment of the automatic welding device for bracket-type automotive parts of the present invention, the damping part includes an outer sleeve fixedly disposed at the tail end of the retracted end of the arc-shaped telescopic rod. The inner cavity of the outer sleeve is connected to the inner cavity of the arc-shaped telescopic rod. The inner cavity of the outer sleeve is provided with a conical inner liner. The conical inner liner has a large opening at one end and a small opening at the other end of the arc-shaped telescopic rod.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. The structure of the protective mechanism, through the internal spiral telescopic element and lifting and flipping component, drives multiple arc-shaped protective covers to synchronously close and splice into a complete circular protective cover. During welding operations, it completely covers the tip of the welding torch, effectively blocking the outward splashing of high-temperature molten slag and sparks, and avoiding workpiece burns and on-site personnel being burned by sparks.

[0016] 2. The structure of the double locking and limiting component, which consists of the heat-expanding bladder inside the retraction ring, the telescopic ring, the pin, and the hook, automatically locks the protective cover in the closed position under high-temperature welding conditions. The protective cover will not open on its own after the power is cut off, continuously isolating the high-temperature outer wall of the welding torch and preventing workers from accidentally touching the high-temperature torch body and causing burns during maintenance.

[0017] 3. Through the structural function of the arc-shaped telescopic rod with a tapered inner lining damping part mounted on the outside of the retraction ring, gas buffer resistance is generated during the reset and opening stage of the protective cover after welding, which reduces the rebound speed of the protective cover and prevents the protective cover from rapidly impacting and wearing down the welding torch and parts. At the same time, it avoids the rapid opening and closing of the protective cover from raising high-temperature debris that could burn maintenance personnel. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of an automatic welding device for bracket-type automotive parts. Figure 2 A magnified schematic diagram of the welding torch position structure in an automatic welding device for bracket-type automotive parts. Figure 3 A schematic diagram showing the position of the lifting and tilting components in an automatic welding device for bracket-type automotive parts. Figure 4 A schematic diagram showing the location of the power component in an automatic welding device for bracket-type automotive parts. Figure 5 This is a schematic diagram showing the position of the limit component in an automatic welding device for bracket-type automotive parts.

[0020] Figure 6 This is a rear view schematic diagram of the lifting and tilting assembly of an automatic welding device for bracket-type automotive parts.

[0021] Figure 7 This is a schematic diagram showing the connection between the lifting and tilting assembly and the power assembly of an automatic welding device for bracket-type automotive parts.

[0022] Figure 8 for Figure 7 Enlarged schematic diagram of part A.

[0023] In the diagram: 10. Robotic arm; 11. Welding torch; 12. Fixed ring; 13. Protective cover; 14. Power assembly; 141. Moving ring; 142. Helical telescopic element; 143. Horizontal slider; 15. Lifting and tilting assembly; 151. Arc-shaped back plate; 152. Angled guide groove; 153. Guide rod; 154. Strip-shaped back plate; 155. Vertical guide groove; 156. Vertical slider; 157. Vertical connecting rod; 158. Angled push rod; 159. Fixed rod; 20. Retraction ring; 21. Limiting assembly; 211. Telescopic ring; 212. Pin; 213. Hook; 214. Expansion bladder; 30. Arc-shaped telescopic rod; 31. Damping part; 311. Outer sleeve; 312. Conical inner liner. Detailed Implementation

[0024] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0025] Reference Figure 1 - Figure 8 This is the first embodiment of the present invention. This embodiment provides an automatic welding device for bracket-type automotive parts, which achieves the effects of preventing sparks during welding and preventing burns during maintenance. It includes a protective mechanism, which includes a robotic arm 10 and a welding torch 11. A fixing ring 12 is fixedly provided at the lower part of the welding torch 11. Several protective covers 13 are rotatably provided at the lower end of the fixing ring 12 to protect the welding torch 11. Several power components 14 and lifting and tilting components 15 are provided at the lower end of the fixing ring 12 to drive the several protective covers 13 to protect the welding torch 11. The limiting mechanism includes a retractable ring 20 fixedly disposed at the lower end of the fixed ring 12, and a limiting component 21 disposed inside the retractable ring 20. The limiting component 21 is used to limit the lifting and tilting component 15. The deceleration mechanism includes several arc-shaped telescopic rods 30 fixedly installed on the outer ring side of the retraction ring 20. One end of each arc-shaped telescopic rod 30 is provided with a damping part 31, which is used to reset and decelerate the power assembly 14.

[0026] Specifically, the power assembly 14 includes a movable ring 141 that passes through the connection between the fixed ring 12 and the protective cover 13. The movable ring 141 is fixedly connected to the fixed ring 12 and movably connected to the protective cover 13. Several spiral telescopic elements 142 are sleeved on the movable ring 141. The spiral telescopic elements 142 are energized to achieve telescopic movement. A horizontal slider 143 is fixedly provided at one end of the spiral telescopic elements 142.

[0027] The lifting and tilting assembly 15 includes several arc-shaped back plates 151 fixedly disposed at the lower end of the fixed ring 12. An inclined guide groove 152 is provided on the arc-shaped back plate 151. A guide rod 153 is slidably disposed in the inclined guide groove 152. A strip-shaped back plate 154 is slidably disposed on one side of the arc-shaped back plate 151. The strip-shaped back plate 154 is fixedly connected to the horizontal slider 143. A vertical guide groove 155 is provided on the strip-shaped back plate 154. A vertical slider 156 is slidably disposed in the inner cavity of the vertical guide groove 155. The vertical slider 156 is fixedly connected to the guide rod 153. A vertical connecting rod 157 is fixedly disposed at the lower end of the vertical slider 156. An inclined push rod 158 is slidably disposed at the lower end of the vertical connecting rod 157. A fixed rod 159 is rotatably disposed at one end of the inclined push rod 158. One end of the fixed rod 159 is fixedly connected to the strip-shaped back plate 154.

[0028] Furthermore, the helical telescopic element 142 uses a mature energized spring as the actuator. This element has the basic characteristics of contraction upon energization and rebound reset upon de-energization: when the helical telescopic element 142 is connected to the working current, it generates a contraction force, which synchronously pulls the rigidly connected horizontal slider 143 to move smoothly along the axial direction of the movable ring 141; after the circuit is disconnected and the power supply is stopped, the energized spring automatically rebounds and resets due to its own metallic elasticity, pulling the horizontal slider 143 in the opposite direction to complete the return movement. Since the energized spring is a standard actuator widely used in the industry, and its internal structure and telescopic control principle are existing publicly available technologies, this specification will not elaborate on its internal structure and electrical drive logic.

[0029] The top of the inclined push rod 158 always remains in close contact with the outer wall of the fixed ring 12. The pushing force generated by the translation and swing of the inclined push rod 158 directly acts on the fixed ring 12, thereby driving the entire protective cover structure to complete the inward retraction and flipping action. At the same time, a return torsion spring is equipped at the rotational connection position between the protective cover 13 and the movable ring 141. When the pushing force of the inclined push rod 158 is removed and no longer provides limiting support for the protective cover 13, the elastic potential energy accumulated by the torsion spring will be released synchronously, providing a stable return driving force for the protective cover 13 to flip outward and open, ensuring that the opening and closing action of the protective cover is smooth and reversible.

[0030] It should be noted that the protective cover 13 surrounding the welding torch 11 is composed of multiple arc-shaped split plates. When the multiple protective covers are fully closed, they form a complete and enclosed circular protective shell. In terms of assembly dimensions, the protective cover 13 extends downwards as a whole, and its lower end is lower than the welding end of the welding torch 11. This structural layout has a dual safety protection function: on the one hand, during the welding operation, the fully enclosed protective shell can block the high-temperature sparks and molten metal slag generated by the welding torch from splashing outwards in all directions, avoiding workpiece surface ablation, damage to surrounding equipment, and burns to on-site operators from sparks; on the other hand, when the welding process is completed, the equipment is shut down for maintenance, or welding consumables are replaced, the closed state of the protective cover can continuously wrap around and insulate the heat-retaining welding torch body, forming a physical heat insulation barrier, effectively preventing burns caused by workers accidentally touching the high-temperature torch body during maintenance operations.

[0031] The limiting component 21 includes a telescopic ring 211 that is slidably disposed in the inner cavity of the retraction ring 20. Several pins 212 are fixedly disposed at the upper end of the telescopic ring 211. The pins 212 abut against several guide rods 153 respectively. A hook 213 fixedly connected to the guide rod 153 is provided on one side of the pin 212 for further limiting. The limiting component 21 also includes an expansion bladder 214 disposed in the inner cavity of the retraction ring 20. The expansion bladder 214 expands when heated.

[0032] Specifically, when the spiral telescopic element 142 is energized and generates a contraction force, it pulls the horizontal slider and the strip back plate to move. The guide rod 153 in the lifting and tilting assembly 15 will slide along the inclined guide groove 152 opened in the arc-shaped back plate 151 to the lowest position of the stroke. This position is the fixed position where the protective cover 13 closes. At this time, multiple arc-shaped protective covers 13 simultaneously flip inward and splice together to form a complete circular protective shell, which completely wraps the welding end of the welding torch 11. It can block the high-temperature molten slag and sparks that erupt during welding operations from all directions, and complete the protection against sparks and splashes during welding.

[0033] The equipment continuously generates heat during prolonged welding, which is transferred to the expansion bladder 214 inside the retraction ring 20. The expansion bladder 214 is filled with a medium that expands rapidly when heated, causing the expansion bladder to expand outward. This, in turn, lifts the telescopic ring 211, which is slidably mounted inside the retraction ring 20, upward. The multiple pins 212 that move upward synchronously with the telescopic ring 211 will tightly abut against the side wall of each guide rod 153, forming a rigid blocking limit on the guide rod 153. Even if the power supply to the spiral telescopic element 142 is cut off at this stage, the energized spring loses its contraction traction force, and the guide rod 153, which is held by the pins, cannot slide in the reverse direction. The entire lifting and tilting assembly 15 cannot return to its original position, and the protective cover 13 will remain closed and will not open outward on its own.

[0034] It should be noted that the filling medium inside the expansion bladder 214 is made of a material that changes significantly in volume when heated. Commonly used filling media include mercury and carbon dioxide. The mechanical locking effect is achieved by the thermal expansion of the medium. This type of thermal expansion self-locking structure and the matching filling medium are mature existing technologies. The performance of the medium and the related principles of expansion drive are well known. Therefore, this embodiment will not elaborate on its internal structure and expansion logic.

[0035] Furthermore, the damping part 31 includes an outer sleeve 311 fixedly disposed at the tail of the retracted end of the arc-shaped telescopic rod 30. The inner cavity of the outer sleeve 311 is connected to the inner cavity of the arc-shaped telescopic rod 30. The inner cavity of the outer sleeve 311 is provided with a conical inner liner 312. The conical inner liner 312 is located at one end of the arc-shaped telescopic rod 30 with a large opening and the other end with a small opening.

[0036] It should be noted that the opening sizes at both ends of the conical inner liner 312 assembled inside the damping part 31 are significantly different. The opening size at the end facing the arc-shaped telescopic rod 30 is larger, while the opening size at the far end away from the arc-shaped telescopic rod 30 is smaller. When the protective cover completes its closing and subsequently enters the reset and opening process, the arc-shaped telescopic rod 30 will rapidly retract inward. The air contained inside the telescopic rod will flow along the pipe to the tail outer sleeve 311. When the airflow passes through the narrow far end opening of the conical inner liner 312, the gas discharge channel is narrow, and the air release speed is greatly reduced. The airflow will form a reverse resistance acting inside the arc-shaped telescopic rod 30, applying a continuous and stable damping resistance to the retraction action of the arc-shaped telescopic rod 30. This slows down the inward retraction speed of the arc-shaped telescopic rod 30, making the entire retraction process smooth and slow, and avoiding the rapid rebound of the rod that would cause impact.

[0037] Here, it is necessary to further explain the assembly and connection relationship between the components: the movable telescopic end of the arc-shaped telescopic rod 30 is firmly fixed to the fixed rod 159 as one unit, and the fixed rod 159 is rigidly connected to the strip back plate 154. There is no relative displacement between the two. When the strip back plate 154 is laterally translated under the drive of the spiral telescopic element 142, the fixed rod 159 will move synchronously with the strip back plate 154. During the movement of the fixed rod 159, it will directly pull or push the telescopic end of the arc-shaped telescopic rod 30, thereby driving the arc-shaped telescopic rod 30 to complete two different stroke actions: extending outward and retracting inward. During all stages of the opening and closing of the cover, the arc-shaped telescopic rod 30 can synchronously complete the corresponding telescopic stroke with the movement of the strip back plate 154.

[0038] When in use, after the welding program is started, the spiral telescopic element 142 is energized and retracts. The spiral telescopic element 142 adopts an energized spring structure. After being energized, it generates a retraction force, which pulls the horizontal slider 143, which is fixedly connected to one end, to slide laterally along the movable ring 141. The movable ring 141 is installed through the connection position between the fixed ring 12 and the protective cover 13. The movable ring 141 and the fixed ring 12 are fixed and move in cooperation with the protective cover 13, providing a stable sliding track for the horizontal slider 143.

[0039] The horizontal slider 143 is rigidly connected to the strip back plate 154 inside the lifting and flipping assembly 15. When the horizontal slider 143 moves horizontally, it synchronously drives the strip back plate 154 to move as a whole. The strip back plate 154 has a vertical guide groove 155. The vertical slider 156 slides vertically inside the vertical guide groove 155. The upper end of the vertical slider 156 is fixed with a guide rod 153 and the lower end is connected with a vertical connecting rod 157. The guide rod 153 is inserted into the inclined guide groove 152 of the arc-shaped back plate 151. The arc-shaped back plate 151 is fixed to the lower end of the fixing ring 12. During the translation of the strip back plate 154, the inclined guide groove 152 forms a guiding constraint on the guide rod 153, which drives the vertical slider 156 to rise and fall synchronously along the vertical guide groove 155.

[0040] The vertical connecting rod 157 is fixed to the vertical slider 156. The bottom end of the vertical connecting rod 157 is slidably fitted with the inclined push rod 158. One end of the inclined push rod 158 is rotatably connected to the fixed rod 159, and the other end of the fixed rod 159 is fixed to the lower end of the strip-shaped back plate 154. When the strip-shaped back plate 154 moves horizontally, it drives the vertical slider 156, the vertical connecting rod 157, and the inclined push rod 158 to move together. The vertical slider 156 is fixedly connected to the guide rod 153. The guide rod 153 moves up and down under the action of the inclined guide groove 152, which drives the vertical slider 156 and the vertical connecting rod 157 to move in the strip-shaped back plate 154. This causes the vertical connecting rod 157 to slide in the inclined push rod 158 while driving the inclined push rod 158 to rotate around the fixed rod 159, thereby causing the inclined push rod 158 to drive the cover 13 to open or retract.

[0041] The torsion spring at the junction of the protective cover 13 and the movable ring 141 drives multiple arc-shaped protective covers 13 to flip inward and close synchronously. The multiple protective covers 13 are spliced ​​together to form a complete circular protective cover, which completely wraps around the outside of the welding torch 11. The lower end of the protective cover 13 is lower than the welding end of the welding torch 11. The high-temperature sparks and slag generated during welding are completely blocked by the protective cover 13, preventing sparks from splashing everywhere and burning the workpiece, equipment and operators.

[0042] At the same time, the fixed rod 159 moves synchronously with the strip back plate 154, pulling the arc-shaped telescopic rod 30 on the outside of the retraction ring 20 to extend outward; the tail of the arc-shaped telescopic rod 30 is equipped with a damping part 31, which consists of an outer sleeve 311 and a conical inner liner 312. The inner cavity of the outer sleeve 311 and the interior of the arc-shaped telescopic rod 30 are interconnected. The conical inner liner 312 has a larger opening at the end near the arc-shaped telescopic rod 30 and a smaller opening at the far end. During this stage, the extension movement of the arc-shaped telescopic rod 30 is not restricted by damping and will not interfere with the rapid closing of the protective cover 13.

[0043] Prolonged welding operations continuously generate high-temperature heat, which is conducted to the expansion bladder 214 inside the retraction ring 20. The expansion bladder 214 is filled with a mercury / carbon dioxide thermal expansion medium. After being heated, its volume expands rapidly, pushing the telescopic ring 211, which is slidably assembled inside the retraction ring 20, upward. Multiple pins 212 are integrally fixed to the upper end of the telescopic ring 211. After the pins 212 move upward, they tightly abut against the side wall of each guide rod 153, completing the initial limiting. Hooks 213 are fixed to the outside of the guide rod 153. The hooks 213 and pins 212 engage with each other to form a double locking structure.

[0044] Once locked, even if the power supply to the spiral telescopic element 142 is cut off, the energized spring loses its contraction tension, and the lifting and flipping assembly 15 as a whole cannot slide in the reverse direction, so the protective cover 13 always remains in a closed protective posture. This self-locking structure can prevent the protective cover 13 from accidentally opening due to power failure or circuit failure during welding, continuously blocking sparks from flying, and at the same time isolating the high-temperature outer wall of the welding torch 11 to prevent personnel from being accidentally burned.

[0045] After the welding process is completed and the equipment is put into maintenance, the device cools down naturally. After the temperature of the expansion bladder 214 drops, its volume shrinks and the telescopic ring 211 falls down. The pin 212 disengages from the guide rod 153 and the hook 213, and the limiting component 21 releases its locking constraint on the lifting and flipping component 15.

[0046] After the spiral telescopic element 142 is de-energized, the energized spring pushes the horizontal slider 143 to move back in the opposite direction, the strip back plate 154 resets synchronously, and the inclined push rod 158 removes the pushing force on the fixed ring 12; the torsion spring at the transition position of the cover 13 releases its elasticity, pulling the multiple covers 13 to flip outward and open, exposing the internal welding gun 11, which is convenient for staff to inspect and replace welding materials.

[0047] During the reset process, the strip-shaped back plate 154 drives the fixed rod 159 to pull back the arc-shaped telescopic rod 30. The arc-shaped telescopic rod 30 quickly retracts inward, and the internal gas flows to the tail outer sleeve 311. When the gas passes through the conical inner liner 312, the gas release speed is limited due to the large exhaust resistance at the small outlet at the far end. This creates continuous buffering damping on the arc-shaped telescopic rod 30, significantly reducing the reset speed of the arc-shaped telescopic rod 30, the strip-shaped back plate 154, and the protective cover 13. Relying on the deceleration effect of the damping part 31, the protective cover 13 opens slowly and smoothly, preventing the protective cover 13 from rapidly rebounding and impacting the welding torch 11 and other parts, thus avoiding impact wear. At the same time, it prevents the rapid opening and closing of the protective cover 13 from bringing up high-temperature debris that could burn maintenance personnel.

[0048] After the maintenance is completed, the spiral telescopic element 142 is powered on again, which will drive the cover 13 to close again, and the next round of automatic welding of automobile bracket parts can be carried out.

[0049] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A kind of automatic welding device of bracket type automobile parts, it is characterized by: include, The protective mechanism includes a robotic arm (10) and a welding torch (11). A fixed ring (12) is fixedly provided at the lower part of the welding torch (11). Several protective covers (13) are rotatably provided at the lower end of the fixed ring (12) to protect the welding torch (11). Several power components (14) and lifting and tilting components (15) are provided at the lower end of the fixed ring (12) to drive the several protective covers (13) to protect the welding torch (11). The limiting mechanism includes a retractable ring (20) fixedly disposed at the lower end of the fixed ring (12), and a limiting component (21) is provided inside the retractable ring (20). The limiting component (21) is used to limit the lifting and flipping component (15). The deceleration mechanism includes several arc-shaped telescopic rods (30) fixedly arranged on the outer ring side of the retraction ring (20). One end of each arc-shaped telescopic rod (30) is provided with a damping part (31), which is used to reset and decelerate the power assembly (14).

2. The automatic welding device for bracket type automobile parts according to claim 1, characterized in that: The power assembly (14) includes a movable ring (141) that passes through the connection between the fixed ring (12) and the protective cover (13). The movable ring (141) is fixedly connected to the fixed ring (12), and the movable ring (141) is movably connected to the protective cover (13).

3. The automatic welding device for bracket type automobile parts according to claim 2, characterized in that: The movable ring (141) is fitted with several spiral telescopic elements (142), which are energized to extend and retract. A horizontal slider (143) is fixedly installed at one end of the spiral telescopic element (142).

4. The automatic welding device for the bracket type automobile part according to claim 1, characterized in that: The lifting and flipping assembly (15) includes several arc-shaped back plates (151) fixedly disposed at the lower end of the fixed ring (12). An inclined guide groove (152) is provided on the arc-shaped back plate (151), and a guide rod (153) is slidably disposed in the inclined guide groove (152).

5. The automatic welding device for bracket type automobile parts according to claim 4, characterized in that: A strip back plate (154) is slidably disposed on one side of the arc-shaped back plate (151). The strip back plate (154) is fixedly connected to the horizontal slider (143). A vertical guide groove (155) is provided on the strip back plate (154). A vertical slider (156) is slidably disposed in the inner cavity of the vertical guide groove (155). The vertical slider (156) is fixedly connected to the guide rod (153).

6. The automatic welding device for bracket type automobile parts according to claim 5, characterized in that: A vertical connecting rod (157) is fixedly installed at the lower end of the vertical slider (156), and a slidable push rod (158) is slidably installed at the lower end of the vertical connecting rod (157). A fixed rod (159) is rotatably installed at one end of the slid push rod (158), and one end of the fixed rod (159) is fixedly connected to the strip back plate (154).

7. The automatic welding device for bracket-type automotive parts according to claim 1, characterized in that: The limiting component (21) includes a telescopic ring (211) that is slidably disposed in the inner cavity of the retraction ring (20). Several pins (212) are fixedly disposed on the upper end of the telescopic ring (211), and the pins (212) abut against several guide rods (153) respectively.

8. The automatic welding device for bracket-type automotive parts according to claim 7, characterized in that: A hook (213) is provided on one side of the pin (212) and is fixedly connected to the guide rod (153) for further limiting.

9. The automatic welding device for bracket-type automotive parts according to claim 8, characterized in that: The limiting component (21) also includes an expansion bladder (214) disposed in the inner cavity of the retraction ring (20), the expansion bladder (214) expanding when heated.

10. The automatic welding device for bracket-type automotive parts according to claim 1, characterized in that: The damping part (31) includes an outer sleeve (311) fixedly installed at the tail of the retracted end of the arc-shaped telescopic rod (30). The inner cavity of the outer sleeve (311) is connected to the inner cavity of the arc-shaped telescopic rod (30). The inner cavity of the outer sleeve (311) is provided with a conical inner liner (312). The conical inner liner (312) has a large opening at one end of the arc-shaped telescopic rod (30) and a small opening at the other end.

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