Welding robot

Abstract

The invention relates to the technical field of welding equipment, and discloses a welding robot which comprises a mechanical arm, a welding mechanism and a workbench, the welding mechanism is connected with the workbench through the mechanical arm, the welding mechanism comprises a gas supply assembly, a sleeve and a welding gun, the sleeve is arranged on the outer side of a welding nozzle of the welding gun in a sleeving mode, and the gas supply assembly is connected with the gas supply assembly. A first air channel is arranged between the sleeve and the welding nozzle, a flow guide piece is arranged in the first air channel, the welding nozzle is sleeved with the flow guide piece, the flow guide piece is fixedly connected with the sleeve, a plurality of flow guide grooves are formed in the flow guide piece, the flow guide grooves are spirally formed with the axis of the sleeve as the axis, and a gap exists between the flow guide piece and the welding nozzle. The gas supply assembly comprises a gas storage tank and a gas pump, the gas storage tank is used for storing protective gas, the gas inlet end of the gas pump is communicated with the gas storage tank, and the gas outlet end of the gas pump is communicated with the first gas channel. The method has the effect of relieving the influence of the welding slag on the welding quality.

Description

Technical Field

[0001] The present application relates to the field of welding equipment, and in particular to a welding robot. Background Art

[0002] Welding, also known as fusion, is a manufacturing process and technology that uses heating, high temperature or high pressure to join metals or other thermoplastic materials such as plastics. Welding technology is widely used, from giant ships weighing hundreds of thousands of tons to microelectronic components weighing less than 1 gram, all rely on welding technology to varying degrees in production. Welding has penetrated into all areas of manufacturing, directly affecting product quality, reliability and life, as well as production costs, efficiency and market response speed.

[0003] However, harmful substances such as smoke and exhaust gas generated during the welding process, as well as dangerous factors such as high temperature and spark spattering in welding operations, pose a threat to the health and safety of workers. Therefore, welding robots are gradually being used to replace manual labor, transferring dangerous factors to robots and reducing the risk of worker injury.

[0004] At present, during the welding process of workpieces by existing welding robots, molten metal welding slag often splashes at the welding point. Although there is protective gas blown out of the gas guide sleeve, due to the fast splashing speed and scattered splashing of the welding slag, some welding slag will still enter the gap formed by the inner wall of the gas guide sleeve and the outer wall of the welding nozzle. After entering, the welding slag cools down quickly and solidifies on the inner wall of the gas guide sleeve and the outer wall of the welding nozzle. As the welding slag accumulates, the airflow channel becomes narrower, affecting the smoothness of the airflow, and further affecting the welding effect of the welding robot. Summary of the invention

[0005] In order to alleviate the influence of welding slag accumulation on the inner wall of the gas guide sleeve and the outer wall of the welding nozzle on the welding effect of the welding robot, the present application provides a welding robot.

[0006] The present application provides a welding robot, which adopts the following technical solution: A welding robot comprises a mechanical arm, a welding mechanism and a workbench, wherein the welding mechanism is connected to the workbench through the mechanical arm, the welding mechanism comprises an air supply assembly, a sleeve and a welding gun, the sleeve is sleeved on the outside of a welding nozzle of the welding gun, a first air duct is arranged between the sleeve and the welding nozzle, a flow guide is arranged in the first air duct, the flow guide is sleeved on the outside of the welding nozzle, the flow guide is fixedly connected to the sleeve, a plurality of flow guide grooves are provided on the flow guide, the flow guide grooves are spirally opened with the axis of the sleeve as the axis, a gap is provided between the flow guide and the welding nozzle, the air supply assembly comprises an air storage tank and an air pump, the air storage tank is used to store protective gas, the air inlet end of the air pump is connected to the air storage tank, and the air outlet end of the air pump is connected to the first air duct.

[0007] By adopting the above technical scheme, a guide piece is arranged in the first air channel, and after the air pump pours the shielding gas in the gas tank into the first air channel, a part of the shielding gas flows into the guide groove of the guide piece, and the shielding gas spirally flows out of the first air channel after being guided by the guide piece, forming a vortex around the welding nozzle, and the welding slag mostly flies obliquely toward the first air channel, and the shielding gas spirally flowing out of the first air channel is used to blow away the welding slag splashing into the first air channel, thereby reducing the possibility of the welding slag entering the gap formed between the inner wall of the sleeve and the outer wall of the welding nozzle, depositing and solidifying, causing the air flow channel to become narrower, affecting the smoothness of the air flow, and further affecting the welding effect of the welding robot; in addition, there is a gap between the guide piece and the welding nozzle, and part of the shielding gas flows out of the first air channel through the gap between the guide piece and the welding nozzle, and discharges the air in the welding area, effectively preventing the air from polluting the molten pool during welding, reducing oxidation and impurity generation, and ensuring the welding effect.

[0008] Optionally, an electromagnetic guide assembly is provided on the sleeve, and the electromagnetic guide assembly includes an annular excitation coil wound along the circumference of the sleeve, and the annular excitation coil is electrically connected to the power supply of the welding gun.

[0009] By adopting the above technical scheme, an annular excitation coil is wound on the outside of the sleeve along the circumference of the sleeve. After the annular excitation coil is energized, a magnetic field is generated at the end of the sleeve close to the welding nozzle. Since welding slag is also a magnetic material, after the welding slag enters the magnetic field generated by the annular excitation coil being energized, it is deflected away from the welding nozzle under the synergistic action of the Lorentz force and the magnetic force, so that the spirally flowing protective airflow can blow away the welding slag splashing into the first airway, further reducing the possibility of welding slag entering the first airway.

[0010] Optionally, the sleeve includes an inner tube and an outer tube, the outer tube is coaxially sleeved on the outside of the inner tube, the outer tube is fixedly connected to the inner tube, the first airway is located between the inner tube and the welding nozzle, the guide is fixedly connected to the inner tube, the annular excitation coil is sleeved on the outside of the outer tube, and the annular excitation coil is fixedly connected to the outer tube.

[0011] By adopting the above technical solution, the sleeve includes an inner tube and an outer tube coaxially sleeved together, the outer tube is fixedly connected to the inner tube, and the annular excitation coil is sleeved on the outside of the outer tube. The double-layer sleeve structure can reduce the impact of the high temperature generated during welding on the annular excitation coil to a certain extent, thereby improving the service life of the annular excitation coil.

[0012] Optionally, a second air channel is provided between the outer tube and the inner tube, and the air outlet end of the air pump is connected to the second air channel.

[0013] By adopting the above technical solution, a second air channel is set between the outer tube and the inner tube, and the air pump pumps the shielding gas into the second air channel. The shielding gas in the second air channel flows out from one end of the outer tube close to the welding nozzle, thereby further improving the air exhaust efficiency of the welding area. In addition, during the flow of the shielding gas in the second air channel, the heat transfer between the outer tube and the inner tube is further reduced, thereby reducing the possibility of affecting the working effect of the annular excitation coil due to the high temperature generated during the welding process.

[0014] Optionally, a protective member is provided on the outer tube, and the protective member is located on a side of the annular excitation coil close to the welding nozzle, and the protective member is used to block splashing welding slag.

[0015] By adopting the above technical solution, a protective member is arranged on the side of the annular excitation coil close to the welding nozzle. Since the magnetic force generated after the annular excitation coil is energized will attract the welding slag, the protective member is used to block the welding slag splashing toward the annular excitation coil, so that the welding slag is solidified on the side wall of the protective member. While reducing the possibility of the welding slag splashing onto the annular excitation coil, the splashed welding slag is collected, reducing the possibility of the welding slag falling back onto the weldment, thereby improving the service life of the annular excitation coil and the processing quality of the weldment.

[0016] Optionally, the protective member includes a first baffle, which is sleeved on the outer tube and perpendicular to the axis of the outer tube, and a second baffle is fixedly connected to the extension of the first baffle, and the second baffle is inclined toward a direction close to the annular excitation coil.

[0017] By adopting the above technical solution, the first baffle is perpendicular to the axis of the outer tube, the extension of the first baffle is fixedly connected to the second baffle, and the second baffle is inclined in the direction close to the annular excitation coil. After the annular excitation coil is energized, part of the welding slag enters the magnetic field and moves in the direction close to the annular excitation coil under the synergistic action of the Lorentz force and the magnetic force. The welding slag approaching the annular excitation coil is blocked by the inclined second baffle, so that the welding slag is deposited and solidified on the second baffle, thereby reducing the possibility of the welding slag falling on the workpiece and improving the welding quality.

[0018] Optionally, the protective member is detachably fixedly connected to the outer tube, the first baffle is slidably connected to the outer tube, a limit block is provided on the outer tube, the limit block is located on the side of the annular excitation coil close to the welding nozzle, a thread is provided on the side wall of the outer tube, a nut is threadedly connected to the outer tube, and the first baffle is clamped between the nut and the limit block.

[0019] By adopting the above technical solution, the protective part and the outer tube are detachably fixedly connected. After the welding robot has been used for a period of time, the protective part can be separated from the outer tube and cleaned to remove the welding slag attached to the surface, and the protective part is easy to clean. The protective part is locked by using a nut and a limit block, and the protective part is easy to disassemble and assemble, further improving the convenience of cleaning the protective part.

[0020] Optionally, a weldment fixing seat is provided on the workbench, and the weldment fixing seat is used to fix the weldment. A plurality of protective plates are provided on the outer side of the weldment fixing seat, and the protective plates include a main protective plate and two side protective plates. The main protective plate is located on the side of the weldment fixing seat away from the robotic arm, and the two side protective plates are connected to the side of the main protective plate close to the weldment fixing seat. The side protective plates are arranged perpendicular to the main protective plate, and the side protective plates are slidably connected to the main protective plate. The main protective plate and the side protective plates are both perpendicular to the workbench, and an adjustment mechanism is provided on the main protective plate, and the adjustment mechanism is used to adjust the distance between the two side protective plates.

[0021] By adopting the above technical scheme, a main protective plate and a side protective plate are arranged on the surrounding side of the workpiece. During welding, the protective gas swirling out of the first airway blows part of the welding slag to the surroundings, and the welding slag is blocked by the protective plate, so that the welding slag is solidified on the protective plate, thereby reducing the possibility of the welding slag falling on the workbench and the workpiece surface after losing power, thereby improving the welding quality of the workpiece and reducing the difficulty of cleaning the workbench surface. The distance between the two side protective plates can be adjusted according to the welding position, thereby improving the blocking effect of the side protective plates on the welding slag.

[0022] Optionally, the main protective plate is connected to the workbench through an electric push cylinder, and the adjusting mechanism includes a motor, a bidirectional lead screw and two nuts. The bidirectional lead screw is arranged at the end of the main protective plate away from the workbench, the bidirectional lead screw is rotatably connected to the main protective plate, the motor is fixedly connected to the main protective plate, the output shaft of the motor is coaxially and fixedly connected to the bidirectional lead screw, the two nuts are rotatably connected to the bidirectional lead screw, and the bidirectional lead screw drives the two nuts to move in a direction approaching or moving away from each other, the two nuts are respectively fixedly connected to the two side protective plates, the main protective plate and the side protective plates are both magnetic plates, and the main protective plate and the side protective plate are removably and fixedly connected with a baffle on one side close to the weldment fixing seat.

[0023] By adopting the above technical scheme, the main protective plate is connected to the workbench through an electric push rod, and the distance between the main protective plate and the workbench is adjustable. The two side protective plates are connected to the main protective plate, and the motor is used to drive the bidirectional lead screw to rotate. During the rotation of the bidirectional lead screw, the two nuts are driven to move towards or away from each other, thereby adjusting the distance between the two side protective plates and improving the flexibility of using the protective plates; the main protective plate and the side protective plate are both magnetic plates, and while the protective gas swirling out of the first airway is used to blow part of the welding slag to the surroundings, the main protective plate and the side protective plate are used to adsorb the welding slag, further reducing the possibility of the welding slag falling on the workbench and the surface of the workpiece after losing power, and a detachable fixed baffle is provided on the side of the main protective plate and the side protective plate close to the weldment fixing seat to solidify the welding slag on the baffle. When too much welding slag accumulates on the baffle, the baffle can be removed for cleaning or replacement.

[0024] Optionally, a guide is provided on each side of the two side guard plates that are close to each other, and the two guides are respectively located on both sides of the welding point, and the guide is used to guide the protective gas blown out of the first air duct and the second air duct to the main guard plate and the two side guard plates, and the guide is connected to the side guard plate through a connecting rod, and the end of the side guard plate close to the workbench is fixedly connected to a mounting plate, and a transmission gear is provided on the side of the mounting plate away from the guide, and the transmission gear is rotatably connected to the mounting plate, one end of the connecting rod is fixedly connected to the connecting member, and the connecting rod is keyed to the transmission gear, and the connecting rod is connected to the The transmission gears rotate synchronously, and the transmission gears are meshed with a transmission rack. A first electric push rod is fixedly connected to a side of the side guard plate away from the guide member, and the extension and retraction direction of the piston rod of the first electric push rod is parallel to the side guard plate. The piston rod of the first electric push rod is fixedly connected to the transmission rack. A second electric push rod is fixedly connected to a side of the side guard plate away from the guide member, and the piston rod of the second electric push rod is connected to the connecting rod through a transmission rod, and the extension and retraction direction of the piston rod of the second electric push rod is perpendicular to the side guard plate. The first electric push rod and the second electric push rod are both electrically connected to the robotic arm.

[0025] By adopting the above technical scheme, guide members are arranged on both sides of the welding point, and the guide members are used to guide the shielding gas blown out from the first air duct and the second air duct. After the shielding gas discharges the air in the welding area, the guide members are used to guide the shielding gas to the main shield plate and the two side shield plates, so that part of the fallen welding slag is blown toward the main shield plate and the side shield plates, further reducing the possibility of the welding slag falling on the workbench and the surface of the workpiece after losing power. Through the guidance of the guide members, the shielding gas blown out from the first air duct and the second air duct can cover the welding area more evenly, effectively reducing oxidation and pollution during the welding process and improving the welding quality. The guide members are connected to the side shield plates through connecting rods, and the robot arm is electrically connected to the first electric push rod. During the welding process In the process, as the position of the welding spot changes, the robotic arm will adjust the welding angle of the welding gun, and the robotic arm will transmit a signal to the first electric push rod, which will drive the connecting rod to rotate through the cooperation of the transmission rack and the transmission gear, thereby driving the guide member to rotate, so that the orientation of the guide member changes with the change of the welding angle of the welding gun, thereby reducing the influence of the change of the welding angle on the guide effect of the guide member; the introduction of the first electric push rod and the second electric push rod allows the guide member to be adjusted horizontally and vertically according to welding requirements, further improving the welding quality and efficiency. The first electric push rod and the second electric push rod are both electrically connected to the robotic arm, realizing the synchronous control of the welding process and the adjustment of the protective plate, simplifying the operation process, and improving the level of automation.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: By arranging a guide member in the first air channel, after the air pump pours the shielding gas in the gas tank into the first air channel, a part of the shielding gas flows into the guide groove of the guide member, and after being guided by the guide member, the shielding gas spirally flows out of the first air channel to form a vortex around the welding nozzle, and the welding slag mostly flies obliquely toward the first air channel. The shielding gas spirally flowing out of the first air channel is used to blow away the welding slag splashing into the first air channel, thereby reducing the possibility of the welding slag entering the gap formed between the inner wall of the sleeve and the outer wall of the welding nozzle, depositing and solidifying, causing the air flow channel to become narrower, affecting the smoothness of the air flow, and further affecting the welding effect of the welding robot; in addition, there is a gap between the guide member and the welding nozzle, and part of the shielding gas flows out of the first air channel through the gap between the guide member and the welding nozzle, and discharges the air in the welding area, effectively preventing the air from polluting the molten pool during welding, reducing oxidation and impurity generation, and ensuring the welding effect; By winding an annular excitation coil on the outer side of the sleeve along the circumference of the sleeve, a magnetic field is generated at the end of the sleeve close to the welding nozzle after the annular excitation coil is energized. Since welding slag is also a magnetic material, after the welding slag enters the magnetic field generated by the annular excitation coil being energized, it is deflected in a direction away from the welding nozzle under the synergistic effect of the Lorentz force and the magnetic force, so that the shielding airflow flowing out in a spiral can blow away the welding slag splashing into the first air channel, further reducing the possibility of welding slag entering the first air channel; Guide members are provided on both sides of the welding point, and the guide members are used to guide the shielding gas blown out of the first air channel and the second air channel. After the shielding gas discharges the air in the welding area, the guide members are used to guide the shielding gas to the main shield plate and the two side shield plates, so that part of the falling welding slag is blown toward the main shield plate and the side shield plates, further reducing the possibility that the welding slag will fall on the workbench and the surface of the workpiece after losing power. Through the guidance of the guide members, the shielding gas blown out of the first air channel and the second air channel can cover the welding area more evenly, effectively reducing oxidation and pollution during welding and improving welding quality. The guide members are connected to the side shield plates by connecting rods, and the robot arm is electrically connected to the first electric push rod. During the welding process, as the welding As the position of the welding point changes, the robotic arm will adjust the welding angle of the welding gun, and the robotic arm will transmit a signal to the first electric push rod, which will drive the connecting rod to rotate through the cooperation of the transmission rack and the transmission gear, thereby driving the guide member to rotate, so that the orientation of the guide member changes with the change of the welding angle of the welding gun, thereby reducing the influence of the change of the welding angle on the guide effect of the guide member; the introduction of the first electric push rod and the second electric push rod allows the guide member to be adjusted horizontally and vertically according to welding requirements, further improving the welding quality and efficiency. The first electric push rod and the second electric push rod are both electrically connected to the robotic arm, realizing the synchronous control of the welding process and the adjustment of the protective plate, simplifying the operation process, and improving the level of automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 It is a structural schematic diagram of the sleeve part in the embodiment of the present application; Figure 3 It is a structural schematic diagram of the welding structure part in the embodiment of the present application; Figure 4 It is a structural schematic diagram of the protective element part in the embodiment of the present application; Figure 5 Schematic diagram of gas flow direction of the first airway and the second airway in the embodiment of the present application; Figure 6 It is a structural schematic diagram of the adjustment mechanism part in the embodiment of the present application; Figure 7 yes Figure 1 Enlarged view of part A.

[0028] Reference numerals: 100, robot arm; 200, welding mechanism; 210, sleeve; 211, outer tube; 212, inner tube; 213, first airway; 214, second airway; 220, welding gun; 221, welding nozzle; 230, flow guide; 231, flow guide groove; 240, annular excitation coil; 250, protective member; 251, first baffle; 252, second baffle; 260, limit block; 270, screw Bolt; 300, workbench; 310, weldment fixing seat; 400, main protective plate; 500, side protective plate; 600, adjustment mechanism; 610, motor; 620, bidirectional lead screw; 630, nut; 700, baffle; 800, guide member; 810, connecting rod; 820, transmission gear; 830, transmission rack; 840, first electric push rod; 850, second electric push rod; 860, transmission rod. DETAILED DESCRIPTION

[0029] In order to more clearly explain the overall concept of this application, the following Figure 1-Figure 7 This application is described in further detail.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features in each embodiment may be combined with each other without conflict.

[0031] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] The present application embodiment discloses a welding robot. Figure 1 A welding robot includes a robot arm 100, a welding mechanism 200 and a workbench 300. The welding mechanism 200 is connected to the workbench 300 through the robot arm 100, and the robot arm 100 is used to drive the welding mechanism 200 to move in multiple directions.

[0033] Reference Figure 1 , Figure 2 and Figure 3The welding mechanism 200 includes a gas supply assembly, a sleeve 210, a welding gun 220 and an electromagnetic guide assembly. The sleeve 210 is sleeved on the outside of the welding nozzle 221 of the welding gun 220, and a first gas channel 213 is provided between the sleeve 210 and the welding nozzle 221. A flow guide 230 is provided in the first gas channel 213, and the flow guide 230 is sleeved on the outside of the welding nozzle 221, and the flow guide 230 is fixedly connected to the sleeve 210. A plurality of flow guide grooves 231 are provided on the flow guide 230, and the flow guide grooves 231 are spirally provided with the axis of the sleeve 210 as the axis, and there is a gap between the flow guide 230 and the welding nozzle 221. The gas supply assembly includes a gas storage tank and an air pump, and the gas storage tank is used to store protective gas, the air inlet end of the air pump is connected to the gas storage tank, and the air outlet end of the air pump is connected to the first gas channel 213. The electromagnetic guide assembly includes an annular excitation coil 240 wound along the circumference of the sleeve 210 , and the annular excitation coil 240 is electrically connected to the power supply of the welding gun 220 .

[0034] When welding the workpiece, after the air pump pours the shielding gas in the gas tank into the first air channel 213, a part of the shielding gas flows into the guide groove 231 of the guide member 230. After being guided by the guide member 230, the shielding gas spirally flows out of the first air channel 213, forming a vortex around the welding nozzle 221. The welding slag mostly flies obliquely toward the first air channel 213. The shielding gas spirally flowing out of the first air channel 213 is used to blow away the welding slag splashing toward the first air channel 213, thereby reducing the possibility of the welding slag entering the gap formed by the inner wall of the sleeve 210 and the outer wall of the welding nozzle 221, causing deposition and solidification, resulting in the narrowing of the airflow channel, affecting the smoothness of the airflow, and further affecting the welding effect of the welding robot. When the annular excitation coil 240 is energized, a magnetic field is generated at one end of the sleeve 210 near the welding nozzle 221. Since welding slag is also a magnetic material, after the welding slag enters the magnetic field generated by the annular excitation coil 240 being energized, it is deflected in a direction away from the welding nozzle 221 under the synergistic action of the Lorentz force and the magnetic force, so that the spirally flowing protective airflow can blow away the welding slag splashing into the first air duct 213, further reducing the possibility of welding slag entering the first air duct 213.

[0035] In addition, there is a gap between the guide member 230 and the welding nozzle 221. Part of the protective gas flows out of the first air duct 213 through the gap between the guide member 230 and the welding nozzle 221 and discharges the air in the welding area, effectively preventing the air from contaminating the molten pool during the welding process, reducing oxidation and impurity generation, and ensuring the welding effect.

[0036] Reference Figure 2 , Figure 3 and Figure 5The sleeve 210 includes an inner tube 212 and an outer tube 211. The outer tube 211 is coaxially sleeved on the outer side of the inner tube 212, and the outer tube 211 is fixedly connected to the inner tube 212. The first airway 213 is located between the inner tube 212 and the welding nozzle 221, and the flow guide 230 is fixedly connected to the inner tube 212. The annular excitation coil 240 is sleeved on the outer side of the outer tube 211, and the annular excitation coil 240 is fixedly connected to the outer tube 211.

[0037] By sleeve-arranging the annular excitation coil 240 on the outside of the outer tube 211 , the double-layer sleeve 210 structure can reduce the influence of the high temperature generated during welding on the annular excitation coil 240 to a certain extent, thereby increasing the service life of the annular excitation coil 240 .

[0038] A second air passage 214 is provided between the outer tube 211 and the inner tube 212, and the air outlet of the air pump is connected to the second air passage 214. By providing the second air passage 214 between the outer tube 211 and the inner tube 212, the air pump pumps the shielding gas into the second air passage 214, and the shielding gas in the second air passage 214 flows out from one end of the outer tube 211 close to the welding nozzle 221, thereby further improving the air exhaust efficiency of the welding area; in addition, during the shielding gas flowing in the second air passage 214, the heat transfer between the outer tube 211 and the inner tube 212 is further reduced, thereby reducing the possibility that the high temperature generated during the welding process will affect the working effect of the annular excitation coil 240.

[0039] Reference Figure 3 and Figure 4 The outer tube 211 is provided with a protective member 250, which is located on the side of the annular excitation coil 240 close to the welding nozzle 221, and is used to block the splashing welding slag. The protective member 250 includes a first baffle 251, which is sleeved on the outer tube 211 and is perpendicular to the axis of the outer tube 211. The extension of the first baffle 251 is fixedly connected to the second baffle 252, and the second baffle 252 is inclined in the direction close to the annular excitation coil 240.

[0040] By arranging a protective member 250 on the side of the annular excitation coil 240 close to the welding nozzle 221, the magnetic force generated after the annular excitation coil 240 is energized will attract the welding slag. The protective member 250 is used to block the welding slag splashing toward the annular excitation coil 240, so that the welding slag is solidified on the side wall of the protective member 250. While reducing the possibility of the welding slag splashing onto the annular excitation coil 240, the splashed welding slag is collected, reducing the possibility of the welding slag falling back onto the weldment, thereby improving the service life of the annular excitation coil and the processing quality of the weldment.

[0041] The protective member 250 is detachably fixedly connected to the outer tube 211. The first baffle 251 is slidably connected to the outer tube 211. A limit block 260 is provided on the outer tube 211. The limit block 260 is located on the side of the annular excitation coil 240 close to the welding nozzle 221. The limit block 260 is used to limit the sliding of the first baffle 251 along the outer tube 211. The side wall of the outer tube 211 is provided with a thread, and a nut is threadedly connected to the outer tube 211. The first baffle 251 is clamped between the nut and the limit block 260.

[0042] After the welding robot has been used for a period of time, the protective part 250 can be separated from the outer tube 211 and cleaned to remove the welding slag attached to its surface. The protective part 250 is easy to clean. The protective part 250 is locked by using a nut and a limit block 260. The protective part 250 is easy to disassemble and assemble, further improving the convenience of cleaning the protective part 250.

[0043] Reference Figure 1 , Figure 6 and Figure 7 A weldment fixing seat is fixedly connected to the workbench 300, and the weldment fixing seat is used to fix the weldment. A plurality of protective plates are installed on the outer side of the weldment fixing seat, and the protective plates include a main protective plate 400 and two side protective plates 500. The main protective plate 400 is located on the side of the weldment fixing seat away from the robot arm 100, and the two side protective plates 500 are connected to the side of the main protective plate 400 close to the weldment fixing seat. The side protective plates 500 are arranged perpendicular to the main protective plate 400, and the side protective plates 500 are slidably connected to the main protective plate 400. Both the main protective plate 400 and the side protective plates 500 are perpendicular to the workbench 300, and an adjustment mechanism is installed on the main protective plate 400, and the adjustment mechanism is used to adjust the distance between the two side protective plates 500.

[0044] The main protective plate 400 is connected to the workbench 300 through an electric push cylinder, and the adjustment mechanism includes a motor 610, a bidirectional lead screw 620 and two screw nuts 630. The bidirectional lead screw 620 is arranged at one end of the main protective plate 400 away from the workbench 300, the bidirectional lead screw 620 is rotatably connected to the main protective plate 400, the motor 610 is fixedly connected to the main protective plate 400, the output shaft of the motor 610 is coaxially fixedly connected to the bidirectional lead screw 620, the two screw nuts 630 are both rotatably connected to the bidirectional lead screw 620, the bidirectional lead screw 620 drives the two screw nuts 630 to move in a direction close to or away from each other, and the two screw nuts 630 are respectively fixedly connected to the two side protective plates 500. The main protective plate 400 and the side protective plate 500 are both magnetic plates, and the side of the main protective plate 400 and the side protective plate 500 close to the weldment fixing seat can be detachably fixedly connected with a baffle 700.

[0045] By arranging the main protective plate 400 and the side protective plate 500 on the peripheral side of the workpiece, during the welding process, the protective gas swirling out of the first gas channel 213 blows part of the welding slag to the surroundings, and the welding slag is blocked by the protective plate, so that the welding slag is solidified on the protective plate, thereby reducing the possibility of the welding slag falling on the workbench 300 and the surface of the workpiece after losing power, and reducing the difficulty of cleaning the surface of the workbench 300 while improving the welding quality of the workpiece. The main protective plate 400 is connected to the workbench 300 through an electric push cylinder, and the distance between the main protective plate 400 and the workbench 300 is adjustable. The two side protective plates 500 are both connected to the main protective plate 400, and the motor 610 is used to drive the bidirectional lead screw 620 to rotate. During the rotation of the bidirectional lead screw 620, the two screw nuts 630 are driven to move in a direction close to or away from each other, so as to adjust the distance between the two side protective plates 500, improve the flexibility of the use of the protective plate, and the distance between the two side protective plates 500 can be adjusted according to the welding position, so as to improve the blocking effect of the side protective plates 500 on the welding slag. Both the main protective plate 400 and the side protective plate 500 are magnetic plates. While the protective gas swirling out of the first air duct 213 is used to blow part of the welding slag to the surroundings, the main protective plate 400 and the side protective plate 500 are used to adsorb the welding slag, thereby further reducing the possibility of the welding slag falling on the workbench 300 and the surface of the workpiece after losing power. A baffle 700 is detachably fixed and connected on one side of the main protective plate 400 and the side protective plate 500 close to the weld fixing seat to solidify the welding slag on the baffle 700. When too much welding slag accumulates on the baffle 700, the baffle 700 can be removed for cleaning or replacement.

[0046] Reference Figure 6 and Figure 7, a guide piece 800 is provided on the side where the two side protective plates 500 are close to each other, and the two guide pieces 800 are respectively located on both sides of the welding point. The guide piece 800 is used to guide the protective gas blown out of the first air duct 213 and the second air duct 214 to the main protective plate 400 and the two side protective plates 500. The guide piece 800 is connected to the side protective plate 500 through a connecting rod 810. The end of the side protective plate 500 close to the workbench 300 is fixedly connected with a mounting plate, and a transmission gear 820 is provided on the side of the mounting plate away from the guide piece 800. The transmission gear 820 is rotatably connected to the mounting plate, one end of the connecting rod 810 is fixedly connected to the connecting piece, and the connecting rod 810 is key-connected to the transmission gear 820. The connecting rod 810 is connected to the transmission gear 820. 20 rotate synchronously, the transmission gear 820 is meshedly connected with the transmission rack 830, the side of the side guard plate 500 away from the guide member 800 is fixedly connected with the first electric push rod 840, the extension and retraction direction of the piston rod of the first electric push rod 840 is parallel to the side guard plate 500, the piston rod of the first electric push rod 840 is fixedly connected to the transmission rack 830, the side of the side guard plate 500 away from the guide member 800 is fixedly connected with the second electric push rod 850, the piston rod of the second electric push rod 850 is connected to the connecting rod 810 through the transmission rod 860, the extension and retraction direction of the piston rod of the second electric push rod 850 is perpendicular to the side guard plate 500, the first electric push rod 840 and the second electric push rod 850 are both electrically connected to the robot arm 100.

[0047] By arranging guide members 800 on both sides of the welding point, the guide members 800 are used to guide the shielding gas blown out of the first air duct 213 and the second air duct 214. After the shielding gas discharges the air in the welding area, the guide members 800 are used to guide the shielding gas to the main shielding plate 400 and the two side shielding plates 500, thereby blowing part of the fallen welding slag to the main shielding plate 400 and the side shielding plates 500, further reducing the possibility of the welding slag losing power and falling on the workbench 300 and the surface of the workpiece. Through the guidance of the guide members 800, the shielding gas blown out of the first air duct 213 and the second air duct 214 can cover the welding area more evenly, effectively reducing oxidation and pollution during welding, and improving welding quality.

[0048] The guide member 800 is connected to the side protective plate 500 through the connecting rod 810, and the robot arm 100 is electrically connected to the first electric push rod 840. During the welding process, as the position of the welding point changes, the robot arm 100 will adjust the welding angle of the welding gun 220. The robot arm 100 transmits a signal to the first electric push rod 840, and the first electric push rod 840 drives the connecting rod 810 to rotate through the cooperation of the transmission rack 830 and the transmission gear 820, thereby driving the guide member 800 to rotate, so that the orientation of the guide member 800 changes with the change of the welding angle of the welding gun 220, thereby reducing the influence of the change of the welding angle on the guide effect of the guide member 800; the introduction of the first electric push rod 840 and the second electric push rod 850 enables the guide member 800 to be adjusted horizontally and vertically according to welding requirements, further improving the welding quality and efficiency. The first electric push rod 840 and the second electric push rod 850 are both electrically connected to the robot arm 100, realizing the synchronous control of the welding process and the adjustment of the protective plate, simplifying the operation process, and improving the level of automation.

[0049] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0050] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0051] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A welding robot, comprising a mechanical arm (100), a welding mechanism (200) and a workbench (300), wherein the welding mechanism (200) is connected to the workbench (300) via the mechanical arm (100), characterized in that: The welding mechanism (200) comprises an air supply assembly, a sleeve (210) and a welding gun (220); the sleeve (210) is sleeved on the outside of a welding nozzle (221) of the welding gun (220); a first air passage (213) is provided between the sleeve (210) and the welding nozzle (221); a flow guide (230) is provided in the first air passage (213); the flow guide (230) is sleeved on the outside of the welding nozzle (221); the flow guide (230) and the welding nozzle (221) are connected to each other. The sleeve (210) is fixedly connected, a plurality of guide grooves (231) are formed on the guide member (230), the guide grooves (231) are spirally formed with the axis of the sleeve (210) as the axis, a gap exists between the guide member (230) and the welding nozzle (221), the gas supply assembly comprises a gas storage tank and an air pump, the gas storage tank is used to store protective gas, the air inlet end of the air pump is connected to the gas storage tank, and the air outlet end of the air pump is connected to the first air channel (213).

2. A welding robot according to claim 1, characterized in that: An electromagnetic guide assembly is provided on the sleeve (210), the electromagnetic guide assembly comprising an annular excitation coil (240) wound along the circumference of the sleeve (210), and the annular excitation coil (240) is electrically connected to a power source of a welding gun (220).

3. A welding robot according to claim 2, characterized in that: The sleeve (210) comprises an inner tube (212) and an outer tube (211); the outer tube (211) is coaxially sleeved on the outside of the inner tube (212); the outer tube (211) and the inner tube (212) are fixedly connected; the first air channel (213) is located between the inner tube (212) and the welding nozzle (221); the flow guide (230) and the inner tube (212) are fixedly connected; the annular excitation coil (240) is sleeved on the outside of the outer tube (211); and the annular excitation coil (240) and the outer tube (211) are fixedly connected.

4. A welding robot according to claim 3, characterized in that: A second air channel (214) is provided between the outer tube (211) and the inner tube (212), and an air outlet end of the air pump is in communication with the second air channel (214).

5. A welding robot according to claim 3, characterized in that: A protective piece (250) is provided on the outer tube (211); the protective piece (250) is located on a side of the annular excitation coil (240) close to the welding nozzle (221); the protective piece (250) is used to block splashing welding slag.

6. A welding robot according to claim 5, characterized in that: The protective member (250) comprises a first baffle (251), the first baffle (251) being sleeved on the outer tube (211) and the first baffle (251) being perpendicular to the axis of the outer tube (211), the second baffle (252) being fixedly connected to the outer extension of the first baffle (251), and the second baffle (252) being inclined in a direction close to the annular excitation coil (240).

7. A welding robot according to claim 6, characterized in that: The protective member (250) is detachably fixedly connected to the outer tube (211); the first baffle (251) is slidably connected to the outer tube (211); a limit block (260) is provided on the outer tube (211); the limit block (260) is located on a side of the annular excitation coil (240) close to the welding nozzle (221); a thread is provided on the side wall of the outer tube (211); a nut is threadedly connected to the outer tube (211); and the first baffle (251) is clamped between the nut and the limit block (260).

8. A welding robot according to claim 4, characterized in that: A weldment fixing seat (310) is arranged on the workbench (300), and the weldment fixing seat (310) is used to fix the weldment. A plurality of protective plates are arranged on the outer side of the weldment fixing seat (310), and the protective plates include a main protective plate (400) and two side protective plates (500). The main protective plate (400) is located on a side of the weldment fixing seat (310) away from the robot arm (100), and the two side protective plates (500) are connected to a side of the main protective plate (400) close to the weldment fixing seat (310). The side protective plates (500) are arranged perpendicular to the main protective plate (400), and the side protective plates (500) are slidably connected to the main protective plate (400). The main protective plate (400) and the side protective plates (500) are both perpendicular to the workbench (300), and an adjustment mechanism is arranged on the main protective plate (400), and the adjustment mechanism is used to adjust the distance between the two side protective plates (500).

9. A welding robot according to claim 8, characterized in that: The main protective plate (400) is connected to the workbench (300) via an electric push cylinder. The adjustment mechanism (600) comprises a motor (610), a bidirectional lead screw (620) and two screw nuts (630). The bidirectional lead screw (620) is arranged at one end of the main protective plate (400) away from the workbench (300). The bidirectional lead screw (620) is rotatably connected to the main protective plate (400). The motor (610) is fixedly connected to the main protective plate (400). The output shaft of the motor (610) is synchronous with the bidirectional lead screw (620). The two nuts (630) are rotatably connected to the bidirectional lead screw (620), and the bidirectional lead screw (620) drives the two nuts (630) to move in a direction close to or away from each other. The two nuts (630) are respectively fixedly connected to two side protection plates (500), and the main protection plate (400) and the side protection plate (500) are both magnetic plates. The main protection plate (400) and the side protection plate (500) are both detachably fixedly connected to a baffle (700) on one side close to the weldment fixing seat (310).

10. A welding robot according to claim 9, characterized in that: A guide member (800) is provided on each side of the two side protective plates (500) close to each other. The two guide members (800) are respectively located on both sides of the welding point. The guide member (800) is used to guide the protective gas blown out of the first air duct (213) and the second air duct (214) to the main protective plate (400) and the two side protective plates (500). The guide member (800) is connected to the side protective plates (500) via a connecting rod (810). An end of the side protective plate (500) close to the workbench (300) is fixedly connected to a mounting plate. A transmission gear (820) is provided on a side of the mounting plate away from the guide member (800). The transmission gear (820) is rotatably connected to the mounting plate. One end of the connecting rod (810) is fixedly connected to the connecting member. The connecting rod (810) is key-connected to the transmission gear (820). (820) rotate synchronously, the transmission gear (820) is meshedly connected with a transmission rack (830), the side of the side guard plate (500) away from the guide member (800) is fixedly connected with a first electric push rod (840), the extension direction of the piston rod of the first electric push rod (840) is parallel to the side guard plate (500), the piston rod of the first electric push rod (840) is fixedly connected to the transmission rack (830), the side of the side guard plate (500) away from the guide member (800) is fixedly connected with a second electric push rod (850), the piston rod of the second electric push rod (850) is connected to the connecting rod (810) through a transmission rod (860), the extension direction of the piston rod of the second electric push rod (850) is perpendicular to the side guard plate (500), and the first electric push rod (840) and the second electric push rod (850) are both electrically connected to the robot arm (100).

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