Welding mechanical arm for automobile production

Abstract

The invention discloses a welding mechanical arm for automobile production, and relates to the technical field of welding mechanical arms, the welding mechanical arm comprises a movable seat, a base is fixedly mounted at the top of the movable seat, a mechanical arm body is arranged at the top of the base, a welding gun is arranged at one end of the mechanical arm body, and the welding mechanical arm further comprises a shielding assembly arranged on one side of the exterior of the welding gun; the shielding assembly comprises a fixed ring and a moving assembly, the moving assembly is arranged at the bottom of the movable seat, the fixed ring is fixedly installed outside the welding gun, and two sets of fixing frames are symmetrically installed below the outer side of the fixed ring; through the arrangement of the annular shielding cloth, when the mechanical arm body controls the welding gun to conduct welding, burst welding slag can be shielded, the situation that a pipeline on the mechanical arm body is burnt due to bursting of the welding slag is avoided, the service life is not affected, and when the welding gun conducts welding in a narrow space, the annular shielding cloth does not affect adjustment of the position of the welding gun; and the welding flexibility is not influenced while the protection performance is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of welding robotic arms, and specifically to a robotic arm for welding in automobile production. Background Art

[0002] During the production and processing of automobiles, it is generally necessary to weld the vehicle body and parts. Automobile manufacturers have higher and higher requirements for welding processes. Mechanical welding arms are flexible in movement and are not affected by human factors, which can ensure that the product quality remains consistent from the beginning of processing to the end of production, and are highly favored by enterprises.

[0003] For example, an automatically temperature-controlled transformer with the publication number CN210649182U, by setting a device seat and an extension mechanism, it is possible to drive the mechanical welding arm on the mounting seat to horizontally move its position through a second electric push rod without moving the automobile sill assembly, which is more conducive to welding operations and can improve welding efficiency. However, during the welding process of the robotic arm, welding slag will splash. The welding slag has a relatively high temperature, and splashing the welding slag onto the circuit air path of the robotic arm is likely to cause burns and affect the service life of the components. Although a protective cover structure can be added to block the welding slag, when the robotic arm is directly provided with a shielding protective cover during welding in automobile production, when the robotic arm is welding in a narrow space such as the vehicle frame or the engine compartment of the automobile, due to space limitations, the protective cover will limit the rotation of the robotic arm, thereby reducing the flexibility of the robotic arm and making it inconvenient for the robotic arm to perform welding work in a narrow space, and there are certain usage defects in reducing the welding efficiency.

[0004] Therefore, we propose a robotic arm for welding in automobile production to solve the problems raised above. Summary of the Invention

[0005] The purpose of the present invention is to provide a robotic arm for welding in automobile production to solve the problem that during the welding process of the robotic arm, welding slag will splash, the welding slag has a relatively high temperature, and splashing the welding slag onto the circuit air path of the robotic arm is likely to cause burns and affect the service life of the components as mentioned in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A robotic arm for welding in automobile production includes a movable seat. A base is fixedly installed on the top of the movable seat, and a robotic arm body is arranged on the top of the base, and a welding torch is arranged at one end of the robotic arm body;

[0007] It further includes:

[0008] A shielding assembly, arranged on the outer side of the welding torch, and the shielding assembly includes a fixed ring;

[0009] A moving assembly, arranged at the bottom of the movable seat;

[0010] A fixing ring is fixedly installed outside the welding torch. Two groups of fixing brackets are symmetrically installed below the outer side of the fixing ring. A rotating rod is rotatably connected between each group of two fixing brackets. A support frame is fixedly installed on the outer part of the rotating rod. At the same time, mounting rods are symmetrically installed on the side of the support frame away from the rotating rod. Moreover, a movable plate is slidably connected to the outer parts of the two groups of mounting rods;

[0011] A telescopic spring is sleeved on one side of the outer part of the mounting rod. One end of the telescopic spring is fixedly connected to the movable plate. And the other end of the telescopic spring is fixedly installed with a mounting block, and the mounting block is fixedly connected to the mounting rod. At the same time, an arc-shaped rod is fixedly installed at the bottom of the movable plate. Moreover, fixing strips are fixedly installed on the outer sides of the two groups of arc-shaped rods. And a circular shielding cloth is sleeved below the two groups of fixing brackets on the outer part of the fixing ring. And the inner ring of the circular shielding cloth is fixedly connected to the fixing ring. At the same time, the outer ring of the circular shielding cloth is fixedly connected to the two fixing strips.

[0012] Preferably, torsion springs are symmetrically sleeved on both sides of the support frame on the outer part of the rotating rod. And the two ends of the torsion spring are respectively fixedly connected to the support frame and the fixing bracket.

[0013] By adopting the above technical solution, the rotating rod can automatically reset after rotation.

[0014] Preferably, a movable ring is slidably connected to the upper part of the outer part of the fixing ring. Two groups of movable rods are symmetrically installed on the top of the movable ring. And on one side of the outer parts of the two groups of movable rods, a limiting block is slidably connected. At the same time, the limiting block is fixedly connected to the fixing ring. Moreover, a return spring is sleeved below the limiting block on the outer part of the movable rod. And the two ends of the return spring are respectively fixedly connected to the limiting block and the movable ring.

[0015] By adopting the above technical solution, the movable ring can automatically reset after moving.

[0016] Preferably, two groups of mounting brackets are symmetrically installed on both sides of the two groups of fixing brackets at the bottom of the movable ring. A toothed plate is fixedly installed on one side of the mounting bracket. And the two ends of the rotating rod respectively pass through the two fixing brackets and are fixedly installed with two rotating gears. At the same time, the rotating gear is meshed with the toothed plate.

[0017] By adopting the above technical solution, the rotation of the rotating rod can drive the movable ring to move.

[0018] Preferably, positioning brackets are symmetrically installed on the sides of the two groups of arc-shaped rods close to the fixing ring. A rotating shaft is rotatably connected between the two positioning brackets. Two groups of mounting rings are symmetrically installed on the outer part of the rotating shaft. At the same time, torsion springs are symmetrically sleeved on both sides of the two groups of mounting rings on the outer part of the rotating shaft. And the two ends of the torsion spring are respectively fixedly connected to the positioning bracket and the mounting ring.

[0019] By adopting the above technical solution, the rotating shaft can automatically reset after rotation.

[0020] Preferably, a positioning block is fixedly installed between the two middle mounting rings, a steel wire rope is fixedly installed on one side of the positioning block, a positioning rod is fixedly installed below between the two mounting brackets, and the end of the steel wire rope away from the positioning block is fixedly connected to the positioning rod.

[0021] By adopting the above technical solution, the movement of the steel wire rope can pull the rotating shaft to rotate.

[0022] Preferably, two groups of rotating frames are symmetrically installed at the center of the outside of the two groups of mounting rings, and a rotating roller is rotatably connected between the two rotating frames.

[0023] By adopting the above technical solution, the annular shielding cloth can be cleaned by the rotating roller.

[0024] Preferably, the moving assembly includes a support seat arranged outside the movable seat, the movable seat is slidably connected to the support seat, limiting frames are symmetrically installed inside the support seat, a screw rod is rotatably connected between the two limiting frames, the movable seat is threadedly connected to the screw rod, a driving motor is fixedly installed on one side of the left limiting frame, and the output end of the driving motor passes through the left limiting frame and is fixedly connected to the screw rod.

[0025] By adopting the above technical solution, the position of the manipulator body can be adjusted.

[0026] Preferably, positioning strips are symmetrically installed on both sides of the movable seat, positioning grooves are symmetrically formed inside the support seat, and the positioning strips are slidably connected to the positioning grooves.

[0027] By adopting the above technical solution, the movement of the movable seat can be supported and limited.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows: for the welding manipulator used in automobile production, when the manipulator body controls the welding torch for welding, it can shield the ejected welding slag, avoid the pipeline on the manipulator body from being burned by the ejected welding slag, avoid affecting the service life, and when the welding torch is welding in a narrow space, the annular shielding cloth will not affect the adjustment of the position of the welding torch, and while ensuring the protection performance, it will not affect the flexibility of welding;

[0029] 1. During the welding process in automobile production, the position of the welding torch can be controlled by the robotic arm body, enabling flexible welding of different positions of the automobile. During the welding process, the annular shielding cloth can shield the welding slag. The annular shielding cloth is specifically a fiberglass cloth, which has good high-temperature resistance and strength. If the welding torch is used in a narrow space, after the welding torch extends into the narrow space, the annular shielding cloth abuts against the automobile. As the welding torch extends, it can drive a certain arc-shaped rod to rotate. After the arc-shaped rod rotates, it can drive the rotating rod to rotate on the fixed bracket. After the rotating rod rotates, it can drive the torsion spring to deform. After the rotating rod rotates, it drives the movable ring to move through the engagement of the rotating gear and the toothed plate. While the movable ring moves, it drives the movable rod to slide on the limit block and stretch the return spring. After the movable ring moves, it can drive other support frames to rotate through the engagement of the toothed plate and the rotating gear, so that after the welding torch extends into the narrow space, the movement of one arc-shaped rod can drive the other arc-shaped rod to move simultaneously. When the space is limited, the annular shielding cloth can be wrapped upward, which can reduce the shielding area. And during the upward wrapping process of the annular shielding cloth, the annular shielding cloth can also prevent the welding slag from splashing onto the pipeline in the narrow space. After the welding torch leaves the narrow space, under the action of the torsion spring and the return spring, the support frame and the arc-shaped rod are reset, and the annular shielding cloth is reset, enabling the robotic arm body to control the welding torch for welding, shielding the splashing welding slag, preventing the pipeline on the robotic arm body from being burned by the splashing welding slag, avoiding affecting the service life, and when the welding torch is welding in a narrow space, the annular shielding cloth does not affect the adjustment of the welding torch position, ensuring the flexibility of welding while guaranteeing the protection performance;

[0030] 2. After the welding torch extends into the narrow space, it can drive the support frame and the rotating rod to rotate. During the upward rotation and wrapping process of the annular shielding cloth, the axis of rotation is on the rotating rod, so that the rotation of the support frame can continuously tighten the annular shielding cloth. As the support frame rotates, the movable plate can slide on the mounting rod and stretch the telescopic spring, so that the annular shielding cloth can be tightened during the upward rotation and wrapping process. After the support frame rotates, it can drive the movable ring to move downward. After the movable ring moves downward, it drives the positioning rod to move downward. After the positioning rod moves downward, it can pull one end of the steel wire rope to move, and then can pull the rotating shaft to rotate between the positioning brackets through the steel wire rope. After the rotating shaft rotates, it can drive the torsion spring to deform and can drive the rotating roller between the two rotating frames to rotate circumferentially. During the upward wrapping process of the annular shielding cloth, it can contact the rotating roller. While the annular shielding cloth is in a tightened state, the rotating roller can push against the annular shielding cloth to generate vibration, so that the annular shielding cloth generates vibration while being wrapped upward, facilitating the shaking off of the welding slag adhering to the surface in the tightened state, ensuring the cleanliness of the annular shielding cloth, enhancing the service life of the annular shielding cloth, and improving the practicability;

[0031] 3. The welding torch can be driven by the robotic arm body to weld different positions of the car. The driving motor can be started to drive the screw to rotate. After the screw rotates, it can drive the movable seat to move through the threaded connection with the movable seat, so that the base can be driven to move. While the movable seat moves, it drives the positioning bar to slide inside the positioning groove for limiting, and the position of the robotic arm body can be adjusted. Furthermore, during the production welding of the car, the position of the robotic arm body can be further adjusted, further expanding the welding range and improving the practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 It is a schematic diagram of the structure of the shielding component of the present invention;

[0034] Figure 3 It is a schematic sectional view of the shielding component of the present invention;

[0035] Figure 4 It is a schematic diagram of the partial structure of the shielding component of the present invention;

[0036] Figure 5 For the present invention Figure 4 The enlarged schematic diagram of area A in;

[0037] Figure 6 For the present invention Figure 3 The enlarged schematic diagram of area B in;

[0038] Figure 7 It is a schematic diagram of the positioning frame structure of the present invention;

[0039] Figure 8 For the present invention Figure 2 The enlarged schematic diagram of area C in;

[0040] Figure 9 It is a schematic diagram of the moving component structure of the present invention;

[0041] Figure 10 For the present invention Figure 9 The enlarged schematic diagram of area D in.

[0042] In the figure: 1. Movable seat; 101. Base; 102. Manipulator body; 103. Welding torch; 2. Shielding component; 201. Fixed ring; 202. Fixed frame; 203. Rotating rod; 204. Support frame; 205. Mounting rod; 206. Movable plate; 207. Telescopic spring; 208. Mounting block; 209. Arc rod; 2091. Fixed strip; 210. Annular shielding cloth; 211. Torsion spring; 212. Movable ring; 213. Limiting block; 214. Movable rod; 215. Return spring; 216. Mounting frame; 217. Rack; 218. Rotating gear; 219. Positioning frame; 220. Rotating shaft; 221. Mounting ring; 222. Positioning block; 223. Steel wire rope; 224. Positioning rod; 225. Torsion spring; 226. Rotating frame; 227. Rotating roller; 3. Moving component; 301. Support seat; 302. Limiting frame; 303. Screw rod; 304. Driving motor; 305. Positioning groove; 306. Positioning strip. Detailed implementation manners

[0043] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0044] Please refer to Figures 1-10 , the present invention provides a technical solution: A welding manipulator for automobile production, including a movable seat 1, a base 101 is fixedly installed on the top of the movable seat 1, and a manipulator body 102 is arranged on the top of the base 101, and a welding torch 103 is arranged at one end of the manipulator body 102;

[0045] It further includes:

[0046] A shielding component 2, arranged on the outer side of the welding torch 103, and the shielding component 2 includes a fixed ring 201;

[0047] The fixed ring 201 is fixedly installed on the outside of the welding torch 103. Two groups of fixed frames 202 are symmetrically installed below the outer side of the fixed ring 201. A rotating rod 203 is rotatably connected between each group of two fixed frames 202. A support frame 204 is fixedly installed on the outside of the rotating rod 203. At the same time, mounting rods 205 are symmetrically installed on the side of the support frame 204 away from the rotating rod 203. Moreover, a movable plate 206 is slidably connected to the outside of the two groups of mounting rods 205;

[0048] The telescopic spring 207 is sleeved on the outer side of the mounting rod 205. One end of the telescopic spring 207 is fixedly connected to the movable plate 206, and an installation block 208 is fixedly installed at the other end of the telescopic spring 207. The installation block 208 is fixedly connected to the mounting rod 205. At the same time, an arc-shaped rod 209 is fixedly installed at the bottom of the movable plate 206. Fixed strips 2091 are fixedly installed on the outer sides of the two arc-shaped rods 209. A circular shielding cloth 210 is sleeved below the two fixing frames 202 on the outside of the fixing ring 201. The inner ring of the circular shielding cloth 210 is fixedly connected to the fixing ring 201. At the same time, the outer ring of the circular shielding cloth 210 is fixedly connected to the two fixed strips 2091;

[0049] Torsion springs 211 are symmetrically sleeved on both sides of the support frame 204 on the outside of the rotating rod 203. The two ends of the torsion spring 211 are respectively fixedly connected to the support frame 204 and the fixing frame 202;

[0050] A movable ring 212 is slidably connected above the outside of the fixing ring 201. Two groups of movable rods 214 are symmetrically installed at the top of the movable ring 212. One side of the outside of the two groups of movable rods 214 is slidably connected with a limit block 213. The limit block 213 is fixedly connected to the fixing ring 201. A return spring 215 is sleeved below the limit block 213 on the outside of the movable rod 214. The two ends of the return spring 215 are respectively fixedly connected to the limit block 213 and the movable ring 212;

[0051] Two groups of mounting frames 216 are symmetrically installed on both sides of the two fixing frames 202 at the bottom of the movable ring 212. A toothed plate 217 is fixedly installed on one side of the mounting frame 216. The two ends of the rotating rod 203 respectively pass through the two fixing frames 202 and two rotating gears 218 are fixedly installed. The rotating gear 218 is meshed with the toothed plate 217.

[0052] Example 1: As Figures 1-6As shown in the figure, during the welding process in automobile production, the position of the welding torch 103 is controlled by the manipulator body 102, and different positions of the automobile can be welded flexibly. During the welding process, the annular shielding cloth 210 can shield the welding slag. The annular shielding cloth 210 is specifically a fiberglass cloth, which has good high-temperature resistance and strength. If the welding torch 103 is used in a narrow space, after the welding torch 103 extends into the narrow space, the annular shielding cloth 210 abuts against the automobile. As the welding torch 103 extends, it can drive a certain arc-shaped rod 209 to rotate. After the arc-shaped rod 209 rotates, it can drive the rotating rod 203 to rotate on the fixed frame 202. After the rotating rod 203 rotates, it can drive the torsion spring 211 to deform. After the rotating rod 203 rotates, it drives the movable ring 212 to move through the meshing of the rotating gear 218 and the toothed plate 217. While the movable ring 212 moves, it drives the movable rod 214 to slide on the limit block 213 and stretch the return spring 215. After the movable ring 212 moves, it can drive other support frames 204 to rotate through the meshing of the toothed plate 217 and the rotating gear 218, so that after the welding torch 103 extends into the narrow space, the movement of one arc-shaped rod 209 can drive the other arc-shaped rod 209 to move simultaneously. When the space is limited, the annular shielding cloth 210 can be wrapped upward, which can reduce the shielding area. And during the process of the annular shielding cloth 210 being wrapped upward, the annular shielding cloth 210 can also prevent the welding slag from splashing onto the pipeline in the narrow space. After the welding torch 103 leaves the narrow space, under the action of the torsion spring 211 and the return spring 215, the support frame 204 and the arc-shaped rod 209 are reset, and the annular shielding cloth 210 is reset, so that when the manipulator body 102 controls the welding torch 103 to weld, it can shield the splashing welding slag, avoid the pipeline on the manipulator body 102 being burned by the splashing welding slag, avoid affecting the service life, and when the welding torch 103 welds in a narrow space, the annular shielding cloth 210 will not affect the adjustment of the position of the welding torch 103, and while ensuring the protection performance, it will not affect the flexibility of welding.

[0053] On one side of the two groups of arc-shaped rods 209 close to the fixed ring 201, positioning frames 219 are symmetrically installed. A rotating shaft 220 is rotatably connected between the two positioning frames 219. Two groups of mounting rings 221 are symmetrically installed outside the rotating shaft 220. At the same time, two groups of torsion springs 225 are symmetrically sleeved on both sides of the two groups of mounting rings 221 outside the rotating shaft 220. And the two ends of the torsion spring 225 are respectively fixedly connected with the positioning frame 219 and the mounting ring 221.

[0054] A positioning block 222 is fixedly installed between the two middle mounting rings 221. A steel wire rope 223 is fixedly installed on one side of the positioning block 222. A positioning rod 224 is fixedly installed below between the two mounting frames 216. At the same time, one end of the steel wire rope 223 far from the positioning block 222 is fixedly connected with the positioning rod 224.

[0055] On the outsides of both sets of mounting rings 221, two sets of rotating frames 226 are symmetrically mounted at the center, and a rotating roller 227 is rotatably connected between the two rotating frames 226.

[0056] Example Two: As Figures 2-4 and Figures 7-8 shown, after the welding torch 103 extends into a narrow space, it can drive the support frame 204 and the rotating rod 203 to rotate. When the annular shielding cloth 210 rotates upward and wraps, the axis of rotation is on the rotating rod 203. The rotation of the support frame 204 can continuously tighten the annular shielding cloth 210. As the support frame 204 rotates, the movable plate 206 can slide on the mounting rod 205 and stretch the telescopic spring 207. Thus, the annular shielding cloth 210 can be tightened during the upward rotation and wrapping process. After the support frame 204 rotates, it can drive the movable ring 212 to move downward. After the movable ring 212 moves downward, it drives the positioning rod 224 to move downward. After the positioning rod 224 moves downward, it can pull one end of the steel wire rope 223 to move. Thus, the rotating shaft 220 can be pulled by the steel wire rope 223 to rotate between the positioning frames 219. After the rotating shaft 220 rotates, it can drive the torsion spring 225 to deform, and can drive the rotating roller 227 between the two rotating frames 226 to rotate circumferentially. During the upward wrapping process of the annular shielding cloth 210, it can contact the rotating roller 227. While the annular shielding cloth 210 is in a tightened state, the rotating roller 227 can push against the annular shielding cloth 210 to generate vibration. Thus, the annular shielding cloth 210 generates vibration while wrapping upward, which is convenient for shaking off the welding slag attached to the surface in the tightened state, ensuring the cleanliness of the annular shielding cloth 210, extending the service life of the annular shielding cloth 210, and improving the practicability.

[0057] The moving assembly 3 is arranged at the bottom of the movable seat 1;

[0058] The moving assembly 3 includes a support seat 301 arranged outside the movable seat 1. The movable seat 1 is slidably connected to the support seat 301. Inside the support seat 301, two limit frames 302 are symmetrically installed. A screw rod 303 is rotatably connected between the two limit frames 302. The movable seat 1 is threadedly connected to the screw rod 303. On one side of the left limit frame 302, a driving motor 304 is fixedly installed. The output end of the driving motor 304 passes through the left limit frame 302 and is fixedly connected to the screw rod 303;

[0059] Positioning strips 306 are symmetrically installed on both sides of the movable seat 1. Positioning grooves 305 are symmetrically formed inside the support seat 301. The positioning strips 306 are slidably connected to the positioning grooves 305.

[0060] Example Three: As Figure 1 and Figures 9-10As shown in the figure, the welding torch 103 can be driven by the robotic arm body 102 to weld different positions of the automobile. The driving motor 304 can be started to drive the screw 303 to rotate. After the screw 303 rotates, the movable seat 1 can be driven to move through the threaded connection with the movable seat 1, so that the base 101 can be driven to move. While the movable seat 1 moves, the positioning strip 306 slides inside the positioning groove 305 for limiting, and the position of the robotic arm body 102 can be adjusted. Furthermore, during the production welding of the automobile, the position of the robotic arm body 102 can be further adjusted, the welding range can be further increased, and the practicability is improved.

[0061] Working principle: When using the robotic arm for automobile production welding, first, according to Figures 1-10 As shown in the figure, during welding in the process of automobile production, the position of the welding torch 103 can be controlled by the robotic arm body 102, and different positions of the automobile can be welded flexibly. During the welding process, the annular shielding cloth 210 can shield the welding slag. The annular shielding cloth 210 is specifically a fiberglass cloth, which has good high-temperature resistance and strength. If the welding torch 103 is used in a narrow space, after the welding torch 103 extends into the narrow space, the annular shielding cloth 210 abuts against the automobile. As the welding torch 103 extends, a certain arc-shaped rod 209 can be driven to rotate. After the arc-shaped rod 209 rotates, the rotating rod 203 can be driven to rotate on the fixed frame 202. After the rotating rod 203 rotates, the torsion spring 211 can be driven to deform. After the rotating rod 203 rotates, the movable ring 212 is driven to move through the meshing of the rotating gear 218 and the toothed plate 217. While the movable ring 212 moves, the movable rod 214 slides on the limiting block 213 and stretches the return spring 215. After the movable ring 212 moves, other support frames 204 can be driven to rotate through the meshing of the toothed plate 217 and the rotating gear 218. After the welding torch 103 extends into the narrow space, the movement of one arc-shaped rod 209 can drive the other arc-shaped rod 209 to move simultaneously. When the space is limited, the annular shielding cloth 210 can be wrapped upward, and the shielding area can be reduced. During the upward wrapping process of the annular shielding cloth 210, the annular shielding cloth 210 can also prevent the welding slag from splashing onto the pipeline in the narrow space. After the welding torch 103 leaves the narrow space, under the action of the torsion spring 211 and the return spring 215, the support frame 204 and the arc-shaped rod 209 are reset, and the annular shielding cloth 210 is reset;

[0062] After the welding torch 103 extends into a narrow space, it can drive the support frame 204 and the rotating rod 203 to rotate. The axis of rotation during the upward rotation and wrapping of the annular shielding cloth 210 is on the rotating rod 203. When the support frame 204 rotates, it can continuously tighten the annular shielding cloth 210. As the support frame 204 rotates, the movable plate 206 can slide on the mounting rod 205 and stretch the telescopic spring 207, so that the annular shielding cloth 210 can be tightened during the upward rotation and wrapping process. After the support frame 204 rotates, it can drive the movable ring 212 to move downward. After the movable ring 212 moves downward, it drives the positioning rod 224 to move downward. After the positioning rod 224 moves downward, it can pull one end of the steel wire rope 223 to move. Then, the rotating shaft 220 can be pulled by the steel wire rope 223 to rotate between the positioning frames 219. After the rotating shaft 220 rotates, it can drive the torsion spring 225 to deform and drive the rotating roller 227 between the two rotating frames 226 to rotate circumferentially. During the upward wrapping process of the annular shielding cloth 210, it can contact the rotating roller 227. While the annular shielding cloth 210 is in a tightened state, the rotating roller 227 can push the annular shielding cloth 210 to generate vibration. Thus, the annular shielding cloth 210 generates vibration while being wrapped upward, which is convenient for shaking off the welding slag attached to the surface in the tightened state. By driving the welding torch 103 by the robotic arm body 102 to weld different positions of the vehicle, the driving motor 304 can be started to drive the screw rod 303 to rotate. After the screw rod 303 rotates, it can drive the movable seat 1 to move through the threaded connection with the movable seat 1, so that the base 101 can be driven to move. While the movable seat 1 moves, it drives the positioning strip 306 to slide inside the positioning groove 305 for limiting, and the position of the robotic arm body 102 can be adjusted. Thus, during the production welding of the vehicle, the position of the robotic arm body 102 can be further adjusted.

[0063] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0064] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A welding robot arm for automobile production, comprising a movable seat (1), a base (101) being fixedly mounted on the top of the movable seat (1), a robot arm body (102) being arranged on the top of the base (101), and a welding gun (103) being arranged at one end of the robot arm body (102); It is characterized in that Also includes: A shielding assembly (2) is arranged on an outer side of the welding gun (103), wherein the shielding assembly (2) comprises a fixing ring (201); A moving assembly (3) is arranged at the bottom of the movable seat (1); A fixing ring (201) is fixedly mounted on the outside of the welding gun (103), two groups of fixing frames (202) are symmetrically mounted on the lower outside of the fixing ring (201), and a rotating rod (203) is rotatably connected between each group of two fixing frames (202), and a supporting frame (204) is fixedly mounted on the outside of the rotating rod (203), and a mounting rod (205) is symmetrically mounted on one side of the supporting frame (204) away from the rotating rod (203), and a movable plate (206) is slidably connected to the outside of the two groups of mounting rods (205); A telescopic spring (207) is sleeved on one side of the outside of the mounting rod (205), one end of the telescopic spring (207) is fixedly connected to the movable plate (206), and a mounting block (208) is fixedly installed on the other end of the telescopic spring (207), and the mounting block (208) is fixedly connected to the mounting rod (205), and an arc rod (209) is fixedly installed on the bottom of the movable plate (206), and fixing strips (2091) are fixedly installed on the outer sides of two groups of the arc rods (209), and an annular shielding cloth (210) is sleeved on the outside of the fixing ring (201) and located below the two groups of fixing frames (202), and the inner ring of the annular shielding cloth (210) is fixedly connected to the fixing ring (201), and the outer ring of the annular shielding cloth (210) is fixedly connected to the two fixing strips (2091).

2. A welding robot arm for automobile production according to claim 1, characterized in that: Torsion springs (211) are symmetrically sleeved on both sides of the support frame (204) outside the rotating rod (203), and two ends of the torsion spring (211) are respectively fixedly connected to the support frame (204) and the fixing frame (202).

3. The welding robot arm for automobile production according to claim 1, characterized in that: A movable ring (212) is slidably connected to the upper part of the exterior of the fixed ring (201), and two groups of movable rods (214) are symmetrically installed on the top of the movable ring (212), and one side of the exterior of the two groups of movable rods (214) is slidably connected to a limiting block (213), and the limiting block (213) is fixedly connected to the fixed ring (201), and a return spring (215) is sleeved on the exterior of the movable rod (214) below the limiting block (213), and the two ends of the return spring (215) are respectively fixedly connected to the limiting block (213) and the movable ring (212).

4. A welding robot arm for automobile production according to claim 3, characterized in that: The bottom of the movable ring (212) is located on both sides of the two sets of fixed frames (202) and is symmetrically mounted with two sets of mounting frames (216), and a toothed plate (217) is fixedly mounted on one side of the mounting frame (216), and two ends of the rotating rod (203) pass through the two fixed frames (202) and are fixedly mounted with two rotating gears (218), and the rotating gears (218) are meshedly connected with the toothed plate (217).

5. A welding robot arm for automobile production according to claim 4, characterized in that: A positioning frame (219) is symmetrically installed on one side of the two groups of arc-shaped rods (209) close to the fixing ring (201), and a rotating shaft (220) is rotatably connected between the two positioning frames (219), and two groups of mounting rings (221) are symmetrically installed outside the rotating shaft (220), and torsion springs (225) are symmetrically sleeved on both sides of the two groups of mounting rings (221) outside the rotating shaft (220), and the two ends of the torsion spring (225) are respectively fixedly connected to the positioning frame (219) and the mounting ring (221).

6. A welding robot arm for automobile production according to claim 5, characterized in that: A positioning block (222) is fixedly installed between the two mounting rings (221) in the middle, and a steel wire rope (223) is fixedly installed on one side of the positioning block (222), and a positioning rod (224) is fixedly installed below between the two mounting frames (216), and one end of the steel wire rope (223) away from the positioning block (222) is fixedly connected to the positioning rod (224).

7. The welding robot arm for automobile production according to claim 5, characterized in that: Two groups of rotating frames (226) are centrally symmetrically mounted on the outside of the two groups of mounting rings (221), and a rotating roller (227) is rotatably connected between the two rotating frames (226).

8. The welding robot arm for automobile production according to claim 1, characterized in that: The moving assembly (3) comprises a support seat (301) arranged outside the movable seat (1), and the movable seat (1) is slidably connected to the support seat (301), and a limiting frame (302) is symmetrically installed inside the support seat (301), and a screw rod (303) is rotatably connected between the two limiting frames (302), and the movable seat (1) is threadedly connected to the screw rod (303), and a driving motor (304) is fixedly installed on one side of the left limiting frame (302), and the output end of the driving motor (304) passes through the left limiting frame (302) and is fixedly connected to the screw rod (303).

9. A welding robot arm for automobile production according to claim 8, characterized in that: Positioning strips (306) are symmetrically installed on both sides of the movable seat (1), and positioning grooves (305) are symmetrically opened on the inner side of the support seat (301), and the positioning strips (306) are slidably connected to the positioning grooves (305).

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