Welding robot with protection function

Abstract

The invention discloses a welding robot with a protection function, and relates to the technical field of welding robots, the welding robot comprises a rotating base, a mechanical arm is fixedly mounted at the top of the rotating base, a connecting arm is rotatably mounted at the top of the mechanical arm, and a rotating arm is fixedly mounted at the end, away from the mechanical arm, of the connecting arm; a fixing arm is fixedly installed at the end, away from the connecting arm, of the rotating arm, a welding device is arranged at the end, away from the rotating arm, of the fixing arm, a protection device is arranged on the surface of the fixing arm, a smoke exhaust device is arranged in the fixing arm, a filtering device is arranged in the fixing arm, and the filtering device extends outwards through movement of a protection plate. A physical barrier can be provided between the fixed arm and surrounding facilities, the risk of collision is reduced, the situation that surrounding equipment, workpieces or other fixed facilities are collided, and consequently equipment damage or production pause is caused is prevented, and meanwhile collision with other facilities is effectively avoided.

Description

Technical Field

[0001] This invention relates to the field of welding robot technology, specifically to a welding robot with protective functions. Background Technology

[0002] A welding robot with protective features is an automated device designed with multiple safety protection measures in mind when performing welding tasks. It not only improves the accuracy and efficiency of welding operations, but also protects the safety of operators and prevents harmful factors generated during the welding process (such as heat, fumes, ultraviolet rays, etc.) from causing harm to personnel or the environment.

[0003] Patent publication number CN217965451U relates to the field of welding robot technology. This patent discloses a welding robot with a protective function for picking up parts, including a base and a support component fixedly installed on the upper end of the base. The upper end of the support component is provided with a first adjustment component, and the upper end of the first adjustment component is provided with a second adjustment component. After the welding robot finishes welding the object, it can directly pull the protective component. When the protective component is pulled, the displacement block will rotate on one side of the long rod under the drive of the protective component. The sliding plate is fixedly installed with the cylinder. The cylinder drives the sliding plate to slide in the inner cavity of the through groove. The operator can control the position of the sliding plate in the inner cavity of the sliding groove through the threaded long column and the stop block, thereby facilitating the multi-angle adjustment of the protective component.

[0004] In the aforementioned patent, the position of the sliding long plate in the inner cavity of the sliding long groove is controlled by the threaded long column and the stop block, which facilitates the multi-angle adjustment of the protective components. However, it is difficult to prevent the robotic arm from colliding with other devices or facilities when it is working. This causes the robotic arm to move excessively and collide with other devices or facilities during operation, resulting in damage to the robotic arm and other facilities. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a welding robot with protective functions, thus solving the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a welding robot with protective function, comprising: a rotating base, a mechanical arm fixedly mounted on the top of the rotating base, a connecting arm rotatably mounted on the top of the mechanical arm, a rotating arm fixedly mounted on the end of the connecting arm away from the mechanical arm, a fixed arm fixedly mounted on the end of the rotating arm away from the connecting arm, a welding device provided on the end of the fixed arm away from the rotating arm, a protective device provided on the surface of the fixed arm, a fume extraction device provided inside the fixed arm, and a filtering device provided inside the fixed arm; The protective device includes an electric telescopic rod, a guard plate, a first elastic telescopic rod, an inclined rod, an inclined ring, a fixing block, and a fixing rod. The electric telescopic rod is fixedly installed inside the fixed arm. The guard plate is fixedly installed at the output end of the electric telescopic rod. The first elastic telescopic rod is fixedly installed on the side of the fixed arm near the guard plate. The inclined rod is fixedly installed on the side of the guard plate near the first elastic telescopic rod. The inclined ring is fixedly installed on the circumferential surface of the rotating arm. The fixing block is fixedly installed on the circumferential surface of the rotating arm. The fixing rod is fixedly installed on the side of the inclined ring near the fixing block. When the welding robot starts working, the electric telescopic rod starts synchronously, causing the electric telescopic rod to push the guard plate to move, and the guard plate moves outward.

[0007] According to the above technical solution, the guard plate contacts the movable end of the elastic telescopic rod, the inclined rod and the inclined ring are both set as inclined surfaces on their respective sides, the fixed rod passes through the fixed block, a spring is provided between the inclined ring and the fixed block, and a slot is provided on the side of the connecting arm near the rotating arm. The contact ensures that the guard plate can play a buffering role, the inclined surface ensures that the inclined rod can smoothly push the inclined ring when moving, the spring ensures that the inclined ring can achieve self-reset, and the slot ensures that the fixed rod can move smoothly.

[0008] According to the above technical solution, the smoke exhaust device includes a push rod, a second elastic telescopic rod, a grid plate, a first inclined block, and a protective grid. The push rod is fixedly installed at the front of the guard plate, the second elastic telescopic rod is fixedly installed on the side of the welding device near the guard plate, the grid plate is fixedly installed at the movable end of the second elastic telescopic rod, the first inclined block is fixedly installed at the front of the grid plate, and the protective grid is fixedly installed at the front of the fixed arm. When a collision occurs during the outward extension of the guard plate, the guard plate begins to move towards the fixed arm, simultaneously driving the push rod to move. The push rod moves and contacts and pushes the first inclined block, which in turn moves and drives the grid plate to move. The grid plate moves and contacts the protective grid, closing the smoke exhaust port at the front of the fixed arm.

[0009] According to the above technical solution, the smoke exhaust device also includes a fixed plate, a motor, fan blades, an arc-shaped guide plate, a guide tube, a protective box, and a collection tank. The fixed plate is fixedly installed on the inner wall of the fixed arm, the motor is fixedly installed on the back of the fixed plate, the fan blades are fixedly installed on the output end of the motor, the arc-shaped guide plate is fixedly installed on the inner wall of the fixed arm, the protective box is fixedly installed on the top of the fixed arm, and the collection tank is fixedly installed inside the protective box. The arc-shaped guide plate and the collection tank are connected by a guide tube. When the electric telescopic rod pushes the protective plate to start moving, the movement of the protective plate drives the push rod to start moving. The push rod moves and disengages from the inclined block one. Then, the grid plate moves and resets under the action of the movable end of the elastic telescopic rod two. The grid plate moves and resets, disengages from the protective grid, and opens the smoke exhaust port at the front of the fixed arm. At this time, the motor starts and drives the fan blades to start rotating.

[0010] According to the above technical solution, the side of the push rod that is in contact with the inclined block is set as an inclined surface, and the grid plate is in contact with the protective grid. By setting the inclined surface, it is ensured that the push rod can smoothly push the inclined block when it moves, and by contact, it is ensured that the grid plate can control the opening and closing of the smoke exhaust port.

[0011] According to the above technical solution, the filtration device includes a filter plate and a handle. The filter plate is slidably installed inside the fixed arm, and the handle is fixedly installed on the top of the filter plate. When the fan blades rotate to start exhausting smoke, the welding smoke enters the smoke exhaust device through the protective grille, is filtered by the filter plate, and then enters the collection tank to be collected.

[0012] According to the above technical solution, the filtration device further includes a third elastic telescopic rod, a pull plate, a pressure block, a second inclined block, a limiting plate, and a clamping plate. The third elastic telescopic rod is fixedly installed on the top of the filter plate, the pull plate is fixedly installed on the movable end of the third elastic telescopic rod, the pressure block is fixedly installed on the bottom of the pull plate, the second inclined block is slidably installed on the top of the filter plate, the limiting plate is fixedly installed on the top of the fixed arm, and the clamping plate is fixedly installed on the side of the second inclined block near the limiting plate. When the filter plate needs to be replaced after the welding work is completed, a professional worker needs to hold the handle of the filter plate and manually pull the pull plate. The movement of the pull plate causes the pressure block to start moving. The pressure block moves and disengages from the second inclined block. Then, the second inclined block begins to move and reset under the action of the second spring. The movement and reset of the second inclined block causes the clamping plate to start moving. The clamping plate moves and disengages from the limiting plate.

[0013] According to the above technical solution, the surfaces of the pressure block and the inclined block 2 that are in contact with each other are both set as inclined surfaces. A spring 2 is provided between the inclined block 2 and the fixed end of the elastic telescopic rod 3. The clamping plate is in contact with the limiting plate. By setting the inclined surfaces, it is ensured that the pressure block can smoothly push the inclined block 2 when it moves. By setting the spring 2, it is ensured that the inclined block 2 can achieve self-reset. By contact, it is ensured that the limiting plate can restrict the clamping plate.

[0014] This invention provides a welding robot with protective functions. It has the following beneficial effects: (1) The invention provides a physical barrier between the fixed arm and the surrounding facilities by extending the guard plate outward, thereby reducing the risk of collision and preventing it from hitting the surrounding equipment, workpieces or other fixed facilities, causing equipment damage or production stoppage. At the same time, it effectively avoids collisions with other facilities, thereby reducing damage to the robotic arm and other equipment, reducing the frequency of maintenance and replacement of parts, and reducing maintenance costs. By moving the fixed rod to contact and insert into the slot opened on the connecting arm, the rotation of the rotating arm can be restricted, which can effectively reduce the force generated by the collision, prevent other parts of the robot from being subjected to excessive impact, thereby reducing the risk of equipment damage and reducing possible secondary damage. At the same time, it can ensure that the rotating arm stops rotating, avoiding further damage to the surrounding facilities.

[0015] (2) The invention, by rotating the fan blades to blow air towards the arc-shaped partition, ensures that the fumes generated during welding can be attracted and enter the collection tank through the duct. It can effectively remove fumes and harmful gases from the work area, improve the working environment, reduce the risk of workers being exposed to harmful substances, reduce the corrosion of equipment by harmful substances, extend the service life of the equipment, and reduce the cost of maintenance and cleaning.

[0016] (3) The invention can more effectively control the accumulation of gas and dust by moving the grid plate to contact the protective grid and close the smoke exhaust port at the front of the fixed arm, so that the staff can deal with the accident more quickly and keep the workplace relatively clean. At the same time, it prevents small collision fragments from entering the smoke exhaust device when a collision occurs, which would damage the smoke exhaust device.

[0017] (4) The invention can effectively capture particulate matter and some harmful substances in smoke through the filter plate, significantly reduce the concentration of pollutants in the workshop air, improve the air quality of the working environment, block these particles, reduce equipment pollution, extend the service life of welding robots, and reduce maintenance costs. The used filter plate can be pulled out by the staff to clean or replace it with a brand new filter plate, so as to ensure that the filter plate always maintains a good filtration effect when working again. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the connection relationship between the connecting arm and the rotating arm of the present invention; Figure 3 This is a schematic diagram of the protective device structure of the present invention; Figure 4 This is a schematic diagram of the connection relationship between the inclined ring and the fixed rod of the present invention; Figure 5 This is a schematic diagram of the smoke extraction device of the present invention; Figure 6This is a cross-sectional view of the connection structure between the grid plate and the inclined block of the present invention; Figure 7 This is a cross-sectional schematic diagram of the connection structure between the arc-shaped guide plate and the conduit of the present invention; Figure 8 This is a cross-sectional schematic diagram of the filter device structure of the present invention; Figure 9 This is a cross-sectional schematic diagram showing the connection structure between the inclined block 2 and the card plate of the present invention.

[0019] In the diagram: 1. Rotating base; 2. Robotic arm; 3. Connecting arm; 4. Rotating arm; 5. Fixed arm; 6. Welding device; 7. Electric telescopic rod; 8. Guard plate; 9. Elastic telescopic rod one; 10. Inclined rod; 11. Inclined ring; 12. Fixed block; 13. Fixed rod; 141. Push rod; 142. Elastic telescopic rod two; 143. Grid plate; 144. Inclined block one; 145. Protective grid; 146. Fixed plate; 147. Motor; 148. Fan blade; 149. Arc-shaped guide plate; 1410. Conduit; 1411. Protective box; 1412. Collection tank; 151. Filter plate; 152. Handle; 153. Elastic telescopic rod three; 154. Pull plate; 155. Pressure block; 156. Inclined block two; 157. Limiting plate; 158. Clamping plate. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1-9 One embodiment of the present invention is: a welding robot with protective function, comprising: a rotating base 1, a mechanical arm 2 fixedly mounted on the top of the rotating base 1, a connecting arm 3 rotatably mounted on the top of the mechanical arm 2, a rotating arm 4 fixedly mounted on the end of the connecting arm 3 away from the mechanical arm 2, a fixed arm 5 fixedly mounted on the end of the rotating arm 4 away from the connecting arm 3, a welding device 6 provided on the end of the fixed arm 5 away from the rotating arm 4, and a protective device provided on the surface of the fixed arm 5; The protective device includes an electric telescopic rod 7, a guard plate 8, an elastic telescopic rod 9, an inclined rod 10, an inclined ring 11, a fixing block 12, and a fixing rod 13. The electric telescopic rod 7 is fixedly installed inside the fixed arm 5. The guard plate 8 is fixedly installed at the output end of the electric telescopic rod 7. The elastic telescopic rod 9 is fixedly installed on the side of the fixed arm 5 near the guard plate 8. The inclined rod 10 is fixedly installed on the side of the guard plate 8 near the elastic telescopic rod 9. The inclined ring 11 is fixedly installed on the circumferential surface of the rotating arm 4. The fixing block 12 is fixedly installed on the circumferential surface of the rotating arm 4. The fixing rod 13 is fixedly installed on the side of the inclined ring 11 near the fixing block 12. The rod extends outward through the movement of the guard plate 8, providing a physical barrier between the fixed arm 5 and surrounding facilities, reducing the risk of collision, and preventing contact with surrounding equipment, workpieces, or other fixed facilities, which could cause equipment damage or production stoppage. At the same time, it effectively avoids collisions with other facilities, thereby reducing damage to the robotic arm 2 and other equipment, reducing the frequency of maintenance and replacement of parts, and reducing maintenance costs.

[0022] The guard plate 8 contacts the movable end of the elastic telescopic rod 9. The inclined rod 10 and the inclined ring 11 are both set as inclined surfaces on their sides. The fixed rod 13 passes through the fixed block 12. A spring is set between the inclined ring 11 and the fixed block 12. A slot is opened on the side of the connecting arm 3 near the rotating arm 4. The guard plate 8 can play a buffering role through contact. The inclined surface ensures that the inclined rod 10 can push the inclined ring 11 smoothly when moving. The spring ensures that the inclined ring 11 can achieve self-reset. The slot ensures that the fixed rod 13 can move smoothly.

[0023] In this embodiment, the welding robot operates as follows: Before starting work, a professional technician must inspect the entire robot. After the technician confirms everything is in order, the welding robot begins welding. At the start of work, the rotating base 1 rotates the entire welding robot, aligning it with the area to be welded. Subsequently, the robotic arm 2, connecting arm 3, rotating arm 4, fixed arm 5, and welding device 6, under system control, begin to rotate and adjust their angles to ensure effective welding of the area. Simultaneously, the electric telescopic rod 7 activates, pushing the guard plate 8 to move. The guard plate 8 extends outward, providing a physical barrier between the fixed arm 5 and surrounding facilities, reducing the risk of collisions and preventing damage to equipment, workpieces, or other fixed structures, thus avoiding production stoppages. Simultaneously, it effectively avoids collisions with other facilities, thereby reducing damage to the robotic arm 2 and other equipment, lowering the frequency of repair and replacement of parts, and reducing maintenance costs. When a collision occurs during the outward extension of the guard plate 8 for protection, the guard plate 8 begins to move towards the fixed arm 5. The moving guard plate 8 contacts and presses the movable end of the elastic telescopic rod 9. The moving guard plate 8 drives the inclined rod 10 to begin moving. The moving inclined rod 10 contacts and pushes the inclined ring 11 to begin moving towards the connecting arm 3. The moving inclined ring 11 drives the fixed rod 13 to begin moving. The moving fixed rod 13 contacts and extends into the slot opened on the connecting arm 3 to limit the rotation of the rotating arm 4. This can effectively reduce the force generated by the collision, prevent other parts of the robot from being subjected to excessive impact, thereby reducing the risk of equipment damage and reducing possible secondary damage. At the same time, it can ensure that the rotating arm 4 stops rotating, avoiding further damage to the surrounding facilities.

[0024] Please see Figures 1-9 Based on the above embodiments, in another embodiment of the present invention, a smoke exhaust device is provided inside the fixed arm 5, and a filter device is provided inside the fixed arm 5.

[0025] The smoke exhaust device includes a push rod 141, a second elastic telescopic rod 142, a grid plate 143, a first inclined block 144, and a protective grille 145. The push rod 141 is fixedly installed at the front of the guard plate 8. The second elastic telescopic rod 142 is fixedly installed on the side of the welding device 6 near the guard plate 8. The grid plate 143 is fixedly installed at the movable end of the second elastic telescopic rod 142. The first inclined block 144 is fixedly installed at the front of the grid plate 143. The protective grille 145 is fixedly installed at the front of the fixed arm 5. By moving the grid plate 143 to contact the protective grille 145, the smoke exhaust port at the front of the fixed arm 5 is closed. This can more effectively control the accumulation of gas and dust, allowing workers to handle accidents more quickly and keep the workplace relatively clean. At the same time, it prevents small collision fragments from entering the smoke exhaust device during a collision, which could damage the smoke exhaust device.

[0026] The fume extraction device also includes a fixed plate 146, a motor 147, a fan blade 148, an arc-shaped guide plate 149, a duct 1410, a protective box 1411, and a collection tank 1412. The fixed plate 146 is fixedly installed on the inner wall of the fixed arm 5, the motor 147 is fixedly installed on the back of the fixed plate 146, the fan blade 148 is fixedly installed on the output end of the motor 147, the arc-shaped guide plate 149 is fixedly installed on the inner wall of the fixed arm 5, the protective box 1411 is fixedly installed on the top of the fixed arm 5, and the collection tank 1412 is fixedly installed inside the protective box 1411. The arc-shaped guide plate 149 and the collection tank 1412 are connected by the duct 1410. When the fan blade 148 rotates, it blows air towards the arc-shaped guide plate to ensure that the fumes generated during welding are attracted and enter the collection tank 1412 through the duct 1410. This can effectively remove fumes and harmful gases from the working area, improve the working environment, reduce the risk of workers being exposed to harmful substances, reduce the corrosion of equipment by harmful substances, extend the service life of the equipment, and reduce maintenance and cleaning costs.

[0027] The sides of the push rod 141 that are in contact with the inclined block 144 are both set as inclined surfaces. The grid plate 143 is in contact with the protective grid 145. By setting the inclined surfaces, it is ensured that the push rod 141 can smoothly push the inclined block 144 when it moves. By contact, it is ensured that the grid plate 143 can control the opening and closing of the smoke exhaust port.

[0028] The filtration device includes a filter plate 151 and a handle 152. The filter plate 151 is slidably installed inside the fixed arm 5, and the handle 152 is fixedly installed on the top of the filter plate 151. The filter plate 151 can effectively capture particulate matter and some harmful substances in the smoke, significantly reduce the concentration of pollutants in the workshop air, improve the air quality of the working environment, and at the same time block these particles, reduce equipment pollution, extend the service life of the welding robot, and reduce maintenance costs.

[0029] The filtration device also includes a flexible telescopic rod 153, a pull plate 154, a pressure block 155, an inclined block 156, a limiting plate 157, and a clamping plate 158. The flexible telescopic rod 153 is fixedly installed on the top of the filter plate 151, the pull plate 154 is fixedly installed on the movable end of the flexible telescopic rod 153, the pressure block 155 is fixedly installed on the bottom of the pull plate 154, the inclined block 156 is slidably installed on the top of the filter plate 151, the limiting plate 157 is fixedly installed on the top of the fixed arm 5, and the clamping plate 158 is fixedly installed on the side of the inclined block 156 near the limiting plate 157. The used filter plate 151 can be pulled out by the operator by pulling the handle 152 for cleaning or replacement with a brand new filter plate 151 to ensure that the filter plate 151 always maintains a good filtration effect in the next operation.

[0030] The surfaces of the pressure block 155 and the inclined block 156 that are in contact with each other are both set as inclined surfaces. A spring is provided between the inclined block 156 and the fixed end of the elastic telescopic rod 153. The clamping plate 158 is in contact with the limiting plate 157. By setting the inclined surfaces, it is ensured that the pressure block 155 can smoothly push the inclined block 156 when it moves. By setting the spring, it is ensured that the inclined block 156 can achieve self-reset. By contact, it is ensured that the limiting plate 157 can limit the clamping plate 158.

[0031] In this embodiment, during operation: Simultaneously with the electric telescopic rod 7 pushing the guard plate 8 to move, the movement of the guard plate 8 causes the push rod 141 to move. The push rod 141 disengages from the inclined block 144. Subsequently, the grid plate 143, driven by the movable end of the elastic telescopic rod 142, begins to move and reset. The grid plate 143 disengages from the protective grille 145, opening the exhaust port at the front of the fixed arm 5. At this time, the motor 147 starts, driving the fan blades 148 to rotate. The rotating fan blades 148 begin to blow air towards the arc-shaped partition, ensuring that the fumes generated during welding are attracted and enter the collection tank 1412 through the conduit 1410. This effectively removes fumes and harmful gases from the working area, improving the working environment and reducing worker exposure to harmful substances. This reduces the risk of material damage and can also reduce the corrosion of equipment by harmful substances, extend the service life of the equipment, and reduce maintenance and cleaning costs. When a collision occurs during the outward extension of the guard plate 8, the guard plate 8 begins to move towards the fixed arm 5, which simultaneously drives the push rod 141 to move. The push rod 141 moves and contacts and pushes the inclined block 144. The inclined block 144 moves and drives the grid plate 143 to move. The grid plate 143 moves and contacts the protective grid 145 to close the smoke exhaust port at the front of the fixed arm 5. This can more effectively control the accumulation of gas and dust, allowing workers to handle accidents more quickly and keep the workplace relatively clean. At the same time, it prevents small collision fragments from entering the smoke exhaust device during a collision, which could damage the smoke exhaust device.

[0032] As the fan blades 148 rotate to begin exhausting smoke, the fumes generated by welding enter the exhaust device through the protective grille 145, are filtered by the filter plate 151, and then enter the collection tank 1412 for collection. The filter plate 151 effectively captures particulate matter and some harmful substances in the smoke, significantly reducing the concentration of pollutants in the workshop air, improving the air quality of the working environment, and blocking these particles to reduce equipment pollution, extend the service life of the welding robot, and reduce maintenance costs. When replacing the used filter plate 151 after welding work is completed, it must be done by professional personnel. The operator holds the handle 152 of the filter plate 151 and manually pulls the pull plate 154. The movement of the pull plate 154 causes the pressure block 155 to move. The pressure block 155 moves and disengages from the inclined block 156. Then, the inclined block 156 moves and resets under the action of the spring. The movement and reset of the inclined block 156 causes the clamping plate 158 to move. The clamping plate 158 moves and disengages from the limiting plate 157. At this time, the operator pulls the handle 152 to pull out the used filter plate 151 for cleaning or to replace it with a brand new filter plate 151, so as to ensure that the filter plate 151 always maintains a good filtration effect in the next operation.

[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding robot with protective functions, characterized in that, include: A rotating base (1) is fixedly mounted on the top of the rotating base (1). A connecting arm (3) is rotatably mounted on the top of the mechanical arm (2). A rotating arm (4) is fixedly mounted on the end of the connecting arm (3) away from the mechanical arm (2). A fixed arm (5) is fixedly mounted on the end of the rotating arm (4) away from the connecting arm (3). A welding device (6) is provided on the end of the fixed arm (5) away from the rotating arm (4). A protective device is provided on the surface of the fixed arm (5). A smoke exhaust device is provided inside the fixed arm (5). A filter device is provided inside the fixed arm (5). The protective device includes an electric telescopic rod (7), a guard plate (8), an elastic telescopic rod (9), an inclined rod (10), an inclined ring (11), a fixing block (12), and a fixing rod (13). The electric telescopic rod (7) is fixedly installed inside the fixing arm (5). The guard plate (8) is fixedly installed at the output end of the electric telescopic rod (7). The elastic telescopic rod (9) is fixedly installed on the side of the fixing arm (5) near the guard plate (8). The inclined rod (10) is fixedly installed on the side of the guard plate (8) near the elastic telescopic rod (9). The inclined ring (11) is fixedly installed on the circumferential surface of the rotating arm (4). The fixing block (12) is fixedly installed on the circumferential surface of the rotating arm (4). The fixing rod (13) is fixedly installed on the side of the inclined ring (11) near the fixing block (12).

2. The welding robot with protective function according to claim 1, characterized in that: The guard plate (8) is in contact with the movable end of the elastic telescopic rod (9). The inclined rod (10) and the inclined ring (11) are both set as inclined surfaces on their respective sides. The fixed rod (13) passes through the fixed block (12). A spring is provided between the inclined ring (11) and the fixed block (12). The connecting arm (3) has a slot on its side near the rotating arm (4).

3. A welding robot with protective function according to claim 1, characterized in that: The smoke exhaust device includes a push rod (141), a second elastic telescopic rod (142), a grid plate (143), a first inclined block (144), and a protective grille (145). The push rod (141) is fixedly installed at the front of the guard plate (8). The second elastic telescopic rod (142) is fixedly installed on the side of the welding device (6) near the guard plate (8). The grid plate (143) is fixedly installed at the movable end of the second elastic telescopic rod (142). The first inclined block (144) is fixedly installed at the front of the grid plate (143). The protective grille (145) is fixedly installed at the front of the fixed arm (5).

4. A welding robot with protective function according to claim 3, characterized in that: The smoke exhaust device also includes a fixed plate (146), a motor (147), a fan blade (148), an arc-shaped guide plate (149), a conduit (1410), a protective box (1411), and a collection tank (1412). The fixed plate (146) is fixedly installed on the inner wall of the fixed arm (5). The motor (147) is fixedly installed on the back of the fixed plate (146). The fan blade (148) is fixedly installed on the output end of the motor (147). The arc-shaped guide plate (149) is fixedly installed on the inner wall of the fixed arm (5). The protective box (1411) is fixedly installed on the top of the fixed arm (5). The collection tank (1412) is fixedly installed inside the protective box (1411). The arc-shaped guide plate (149) and the collection tank (1412) are connected by a conduit (1410).

5. A welding robot with protective function according to claim 4, characterized in that: The push rod (141) and the inclined block (144) are both set as inclined surfaces, and the grid plate (143) is in contact with the protective grid (145).

6. A welding robot with protective function according to claim 1, characterized in that: The filtration device includes a filter plate (151) and a handle (152). The filter plate (151) is slidably mounted inside the fixed arm (5), and the handle (152) is fixedly mounted on the top of the filter plate (151).

7. A welding robot with protective function according to claim 6, characterized in that: The filtration device further includes a third elastic telescopic rod (153), a pull plate (154), a pressure block (155), a second inclined block (156), a limiting plate (157), and a clamping plate (158). The third elastic telescopic rod (153) is fixedly installed on the top of the filter plate (151). The pull plate (154) is fixedly installed on the movable end of the third elastic telescopic rod (153). The pressure block (155) is fixedly installed on the bottom of the pull plate (154). The second inclined block (156) is slidably installed on the top of the filter plate (151). The limiting plate (157) is fixedly installed on the top of the fixed arm (5). The clamping plate (158) is fixedly installed on the side of the second inclined block (156) near the limiting plate (157).

8. A welding robot with protective function according to claim 7, characterized in that: The sides of the pressure block (155) and the inclined block two (156) that are in contact with each other are both set as inclined surfaces. A spring two is provided between the inclined block two (156) and the fixed end of the elastic telescopic rod three (153). The clamping plate (158) is in contact with the limiting plate (157).

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