Automatic welding robot

Abstract

The invention belongs to the technical field of welding, and particularly relates to an automatic welding robot which comprises a welding robot body and a material guiding pipe installed on the lower end face of the welding robot body, the material guiding pipe is used for guiding and discharging brazing wire welding flux, and a laser heater is arranged on the portion, located on one side of the material guiding pipe, of the lower end face of the welding robot body. A hinge is fixedly connected to one end of the welding robot body, a sealing cover is fixedly connected to one end of the hinge, fixing blocks are fixedly connected to the two sides of the welding robot body, rotating frames are rotatably connected to the two ends of each fixing block, torsional spring mechanisms are arranged in the fixing blocks, and the rotating frames are rotatably connected to the rotating frames. Two ends of the torsional spring mechanism are fixedly connected with the rotating frame; the problems that if greasy dirt, burrs and dust at the welding positions of workpieces to be welded are not cleaned and polished before welding, molten brazing fluid is difficult to be fused and permeate into the welding seam of the two welded workpieces, the sticky welding effect is formed, and meanwhile the firmness of the welded workpieces is affected are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of welding, in particular to an automatic welding robot. Background Art

[0002] Brazing refers to a welding method in which the solder, which is lower than the melting point of the weldment, and the weldment are heated to the melting temperature of the solder at the same time, and then the gap between the solid workpieces is filled with liquid solder to connect the metals. At present, robots for welding pipes usually install laser heaters or flamethrowers on robotic arms, and then use the robotic arms to accurately control the laser heaters or flamethrowers to heat and melt the brazing wire, and use liquid brazing to fill the gaps in the pipes to form a fixed weld.

[0003] A patent with publication number CN107598433A discloses an automatic welding robot. The invention includes a robot arm, a welding head and a wire feeding mechanism. The robot arm includes a base, an upper arm, a forearm and a finger arm. The upper arm is connected to the base through an upper arm elbow. The upper arm elbow can be horizontally rotatably installed on the base. The upper arm elbow is driven to rotate by a motor. One end of the upper arm is hinged on the upper arm elbow. The upper arm is driven to swing by the motor. The other end of the upper arm is connected to the forearm through the forearm elbow. The upper arm is hinged to the forearm elbow. The forearm elbow is driven to swing by the motor. One end of the forearm can be rotatably installed on the forearm. On the elbow, the forearm is driven to rotate by a motor, and the other end of the forearm is hinged to the finger arm, which is driven to swing by a motor. The welding head is fixed on the finger arm, and a welding wire delivery pipe is arranged in the welding head. The brazing wire solder is delivered by utilizing two wire feeding pulleys of the wire feeding mechanism, and the inner wall of the delivery pipe is threaded, so that the brazing wire solder is forced to rotate during the delivery process. During welding, the welding wire sags due to high temperature and is rotated and deflected, and then recovers after bending upward. During welding, the deviation of the welding point is greatly reduced, the welding accuracy is improved, and the welding quality is improved.

[0004] There are still some problems in the actual application of the above scheme. If the welding joints of the workpieces to be welded are not cleaned and polished to remove oil, burrs and dust before welding, the brazing liquid after the melting of the brazing wire solder will be difficult to penetrate into the welding seam of the two welding workpieces, resulting in a sticky welding effect, which will affect the firmness of the workpieces after welding.

[0005] To this end, the present invention provides an automatic welding robot. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: an automated welding robot described in the present invention comprises a welding robot body and a material guide pipe installed on the lower end surface of the welding robot body, and the material guide pipe is used to guide the discharge of brazing wire solder, and a laser heater is arranged on the lower end surface of the welding robot body on one side of the material guide pipe, which is used to weld the workpiece with the brazing wire solder discharged by the material guide pipe, one end of the welding robot body is fixedly connected to a hinge, and one end of the hinge is fixedly connected to a sealing cover, both sides of the welding robot body are fixedly connected to fixed blocks, and both ends of the fixed block are rotatably connected to a rotating frame, a torsion spring mechanism is arranged inside the fixed block, and both ends of the torsion spring mechanism are fixedly connected to the rotating frame, and one end of the rotating frame is rotatably connected to a clamping adjustment component; The clamping and adjusting assembly includes a connecting column rotatably connected to one end of the rotating frame, the two ends of the connecting column are fixedly connected to the adjusting frame, and the two sides of one end of the adjusting frame are rotatably connected to rubber rollers; The lower end surface of the welding robot body is provided with two T-shaped sliding columns which slide symmetrically, and the lower end of one of the T-shaped sliding columns is externally rotatably connected to a grinding and cleaning plate, and the lower end of the other T-shaped sliding column is externally rotatably connected to a wiping plate.

[0008] Preferably, a rotating groove is provided inside one end of the rotating frame, the connecting column is located outside the inner cavity of the rotating groove and is fixedly connected to a ratchet, a limited storage groove is provided on the inner wall of the rotating groove, a limited slider is slidably connected to the inner cavity of the limited storage groove, one end of the limited slider is fixedly connected to an L-shaped block, and the other end of the limited slider is fixedly connected to a traction rope, the rotating frame is rotatably connected to a winding frame inside, and one end of the traction rope is fixedly connected to the winding frame.

[0009] Preferably, a spring is fixedly connected to the bottom of the inner cavity of the limit storage groove, one end of the spring is fixedly connected to the limit sliding block, and the L-shaped block is used for inserting and engaging the ratchet.

[0010] Preferably, a tension spring is fixedly connected to the bottom of the inner cavity of the welding robot body, and one end of the tension spring is fixedly connected to the T-shaped sliding column. A triangular protrusion is provided on the lower end surface of the grinding and cleaning plate, and grinding stripes are provided on the surface of the triangular protrusion for grinding burrs at the welding point of the workpiece to be welded. A sponge brush is attached to the lower end surface of the grinding and cleaning plate through Velcro for wiping oil stains on the surface of the workpiece to be welded.

[0011] Preferably, a support frame is installed at the bottom of the inner cavity of the welding robot body, a material discharge rack is installed inside the upper end of the support frame, and solder wire is rolled up outside the material discharge rack, and two pressing blocks are symmetrically fixed to the lower end surface of the sealing cover, and the two pressing blocks are abutted against the support frame to limit the material discharge rack.

[0012] Preferably, a fixed frame is installed at the bottom of the inner cavity of the welding robot body, one end of the fixed frame is rotatably connected to two unloading rollers, and a plurality of rubber teeth blocks are arranged on the outside of the two unloading rollers for squeezing and fixing the solder wire for transportation, and one end of one of the unloading rollers is fixedly connected to a driven pulley, and one end of the other unloading roller is fixedly connected to a driving pulley, the outside of the driving pulley is connected to a belt, and one end of the belt is connected to the driven pulley, and the belt is installed in an 80-degree angle for driving the two unloading rollers to rotate in opposite directions, one end of the driving pulley is fixedly connected to a servo motor, and the servo motor is installed at the bottom of the inner cavity of the welding robot body.

[0013] Preferably, a discharge port is provided at the bottom of the inner cavity of the welding robot body, and the discharge port is connected to the inner cavity of the material guide tube. A cooling cavity is provided inside the lower end surface of the welding robot body, and the cooling cavity is used for circulating coolant. The material guide tube is made of semiconductor material and is used for cooling the solder wire.

[0014] Preferably, a coolant circulation component is provided at the bottom of the inner cavity of the welding robot main body, and the cooling circulation component includes a pumping chamber opened in the inner cavity of the welding robot main body, the inner cavity of the pumping chamber is slidably connected with a piston plate, and a plurality of drain ports are provided on the upper end surface of the piston plate, and the inner cavities of the plurality of drain ports are all provided with one-way valves, and the one-way valve can only be flipped open toward the bottom of the inner cavity of the pumping chamber, and the inner cavity of the welding robot main body is provided with two storage chambers located on both sides of the pumping chamber.

[0015] Preferably, a water inlet chamber is provided at the bottom of the inner cavity of the storage chamber, and the water inlet chamber is connected to the cooling chamber, a return water chamber is provided on the inner wall of the cooling chamber, a pumping pipe is fixedly connected to the bottom of the inner cavity of the welding robot body, and the pumping pipe is connected to the return water chamber, a connecting port is provided on the inner wall of the pumping chamber, and one end of the pumping pipe is fixedly connected to the connecting port, a one-way valve is provided in the inner cavity of the connecting port, and the one-way valve can only be flipped open into the pumping chamber, a return water port is provided on the inner wall of the pumping chamber, and the return water port is connected to the storage chamber.

[0016] Preferably, two mounting blocks are symmetrically fixedly connected to both sides of the lower end surface of the welding robot body, and the inner cavities of the two mounting blocks are each provided with a synchronous motor, one end of each mounting block is rotatably connected to a driving wheel, and the driving wheel is fixedly connected to the output shaft end of the synchronous motor, and one of the driving wheels is located in the inner cavity of the mounting block and is fixedly connected to a transmission bevel gear, the transmission bevel gear is fixedly connected to the output shaft end of the synchronous motor, the transmission bevel gear is meshingly connected to a driven bevel gear, a screw is fixedly connected to the inside of the driven bevel gear, the screw is rotatably connected to the water pumping chamber, and the screw is threadedly connected to the piston plate.

[0017] The beneficial effects of the present invention are as follows: 1. The automatic welding robot described in the present invention is characterized in that the welding robot body is installed on the outside of the pipe fitting, and then the pipe fitting is clamped by the clamping adjustment component in cooperation with the rotating frame, and the grinding and cleaning plate and the wiping plate are driven by the T-shaped sliding column to press the pipe fitting, and then the welding robot body is driven to rotate in a ring shape around the pipe fitting, and at the same time, the brazing wire solder is clamped by the rubber tooth block for transportation, so that the brazing wire solder is discharged through the material guide pipe and adheres to the surface of the pipe fitting to be welded, and then the brazing wire solder is heated and melted by the laser heater to form a brazing liquid, and then the pipe fitting is welded and fixed by the brazing liquid, and in When the main body of the welding robot rotates around the pipe fitting, it will drive the grinding and cleaning plate to clean the oil, dust and burrs on the surface of the pipe fitting, and the wiping plate will smooth the welded brazing liquid, which can reduce the unevenness of the weld surface, thereby reducing stress concentration that affects the welding firmness. This solves the problem that if the existing automated welding robot does not clean and grind off the oil, burrs or dust on the welding point of the workpiece to be welded before welding, it will make it difficult for the melted brazing liquid to penetrate into the welding seam of the two welding workpieces, forming a sticky welding effect, and affecting the firmness of the workpiece after welding.

[0018] 2. An automated welding robot described in the present invention drives the driving wheel to rotate by starting a synchronous motor, and then the welding robot body rotates in a circular shape around the pipe fitting, and at the same time, the driving bevel gear also meshes with the driven bevel gear to drive the screw to rotate, and then the threaded transmission piston plate slides back and forth up and down in the pumping chamber, and then the coolant is extracted from the cooling chamber in cooperation with the pumping pipe, and then discharged into the pumping chamber, and then the coolant is discharged into the lower wall of the pumping chamber and flows back to the storage chamber through the return port, and the coolant in the storage chamber will flow into the cooling chamber through the water inlet chamber, cool down the soldering wire in the inner cavity of the discharge port, and avoid the soldering wire from melting in the guide pipe due to overheating, causing the guide pipe to be blocked, and at the same time, too much soldering wire melting will also cause waste of solder, affecting the stress dispersion of the interface welding, resulting in insufficient strength of the welding joint and unstable welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 It is a schematic diagram of the structure of the main view of the present invention as a whole; Figure 2 It is a schematic diagram of the structure of the rear-view stereogram of the present invention; Figure 3 It is a schematic diagram of the internal structure of a partial section of the workbench of the present invention; Figure 4 It is a schematic diagram of the installation structure of the laser cutting assembly of the present invention; Figure 5 It is a schematic diagram of the installation structure of the welding main body of the present invention; Figure 6 It is a schematic diagram of the internal structure of a partial cross section of the pressing plate of the present invention; Figure 7 This is a schematic diagram of the overall structure of the mounting frame of the present invention when viewed from above; Figure 8 It is a schematic diagram of a partial cross-section of the push plate of the present invention; Fig. 9 It is a schematic diagram of the overall structure of the cutting auxiliary component of the present invention; In the figure: 1. Welding robot body; 2. Sealing cover; 3. Fixed block; 4. Rotating frame; 5. Clamping and adjusting assembly; 51. Adjustment frame; 52. Rotation slot; 53. Ratchet; 54. L-shaped block; 55. Traction rope; 56. Winding frame; 57. Limiting slider; 58. Limiting storage slot; 59. Connecting column; 510. Spring; 6. Rubber roller; 7. Driving wheel; 8. Wipe plate; 9. Grinding and cleaning plate; 10. Material guide tube; 11. Laser heater; 12. Press block; 13. T-type slide column; 14. Tension spring; 15. Discharge rack; 16. Support rack; 17. Brazing wire solder; 18. Discharge roller; 19. Servo motor; 20. Driven pulley; 21. Cooling chamber; 22. Water inlet chamber; 23. Water return chamber; 24. Storage chamber; 25. Pumping chamber; 26. Piston plate; 27. Screw rod; 28. Connecting port; 29. ​​Pumping pipe; 30. Discharge port; 31. Transmission bevel gear; 32. Synchronous motor; 33. Driven bevel gear; 34. Fixed frame; 35. Transmission pulley; 36. Mounting block. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods. Example

[0022] like Figures 1 to 9 As shown, an automated welding robot according to an embodiment of the present invention comprises a welding robot body 1 and a material guide pipe 10 installed on the lower end surface of the welding robot body 1, and the material guide pipe 10 is used to guide the discharge of brazing wire solder 17, and a laser heater 11 is provided on the lower end surface of the welding robot body 1 located on one side of the material guide pipe 10, and is used to weld the workpiece with the brazing wire solder 17 discharged by the material guide pipe 10, a hinge is fixedly connected at one end of the welding robot body 1, and a sealing cover 2 is fixedly connected at one end of the hinge, fixed blocks 3 are fixedly connected at both sides of the welding robot body 1, and rotating frames 4 are rotatably connected at both ends of the fixed block 3, a torsion spring mechanism is provided inside the fixed block 3, and both ends of the torsion spring mechanism are fixedly connected to the rotating frame 4, and a clamping adjustment component 5 is rotatably connected at one end of the rotating frame 4; The clamping adjustment assembly 5 includes a connecting column 59 rotatably connected to one end of the rotating frame 4, the two ends of the connecting column 59 are fixedly connected to the adjustment frame 51, and the two sides of one end of the adjustment frame 51 are rotatably connected to the rubber roller 6; Two T-shaped slide columns 13 are symmetrically slidably disposed on the lower end surface of the welding robot body 1 , and a grinding and cleaning plate 9 is externally rotatably connected to the lower end of one T-shaped slide column 13 , and a wiping plate 8 is externally rotatably connected to the lower end of the other T-shaped slide column 13 .

[0023] Specifically, in the prior art, two workpieces to be welded are usually placed on a workbench, butted against each other, and then clamped and fixed. Then, a welding robot is used to control the discharge of brazing wire solder to fit or approach the surface of the workpiece to be welded, and at the same time, a laser heater 11 or a flamethrower is used to heat and melt the brazing wire solder, and then the upper end surface of the workpiece to be welded is welded, and then the clamping angle of the workpiece to be welded is adjusted, and the welded portion to be welded is welded again. This welding method is not only inefficient, but also, if the welded portion of the workpiece to be welded is not cleaned and polished to remove oil, burrs or dust before welding, it will cause the melted brazing liquid to be difficult to penetrate into the weld seam of the two welded workpieces, and form a sticky welding effect, and at the same time affect the firmness of the workpiece after welding; The present invention aligns two pipes to be welded with each other and clamps them on a workbench, while the mutually aligned positions are in a suspended state, and then the adjusting frame 51 is installed on the outside of the two pipes to be welded, and at the same time, the rubber roller 6 is used to clamp the outside of the pipe to increase the friction with the surface of the pipe, and then the torsion spring mechanism is used to drive the rotating frame 4 to rotate close to each other, and then drive the adjusting frame 51 and the two pipes to be welded to form an additive fixation, and when the rotating frame 4 is used to cooperate with the adjusting frame 51 to clamp and fix the pipe, the welding robot body 1 will drive the T-shaped slide column 13 to approach the pipe, and then the T-shaped slide column 13 drives the grinding and cleaning plate 9 and the wiping plate 8 to press and fit with the surface of the pipe, and then the welding robot body 1 is driven to rotate in a circular shape around the pipe, and then the grinding and cleaning plate 9 can be used to grind the cleaning plate 9 to the pipe surface. The joints of the two pipes to be welded are polished to remove the oil on the surface, and the burrs can also be polished to remove the burrs to prevent the oil, burrs and dust from affecting the brazing liquid from being integrated into the welding gap, causing unstable welding. In addition, during the rotation of the welding robot body 1, the laser heater 11 (using the laser heating head in the existing laser brazing machine) is used to heat and melt the brazing wire solder 17 to form brazing liquid, and the brazing liquid is allowed to penetrate into the weld at the joint of the two pipes, thereby completing the welding of the pipes. After the welding of the pipes is completed, the wiper plate 8 will move synchronously with the welding robot body 1, and then smooth the excess brazing liquid at the weld, thereby reducing the unevenness of the weld surface, thereby reducing stress concentration and affecting the welding firmness, thereby solving the above-mentioned problems.

[0024] like Figure 1 , Figure 3 and Figure 6 As shown, a rotating groove 52 is opened inside one end of the rotating frame 4, and a connecting column 59 is located outside the inner cavity of the rotating groove 52 and is fixedly connected to a ratchet 53. A limited storage groove 58 is opened on the inner wall of the rotating groove 52. A limited slider 57 is slidably connected to the inner cavity of the limited storage groove 58. An L-shaped block 54 is fixedly connected to one end of the limited slider 57, and a traction rope 55 is fixedly connected to the other end of the limited slider 57. A winding frame 56 is rotatably connected to the inside of the rotating frame 4, and one end of the traction rope 55 is fixedly connected to the winding frame 56.

[0025] like Figure 1 , Figure 3 and Figure 6 As shown, a spring 510 is fixedly connected to the bottom of the inner cavity of the limiting storage groove 58 , one end of the spring 510 is fixedly connected to the limiting slider 57 , and the L-shaped block 54 is used to insert and engage the ratchet 53 .

[0026] Specifically, before installing the welding robot body 1 on the outside of the pipe fitting, the adjusting frame 51 is rotated in the inner cavity of the rotating groove 52 by toggling, and then the two frames move closer to each other. At the same time, the adjusting frame 51 drives the connecting column 59 to rotate, and at the same time drives the ratchet 53 to rotate, and then the clamping adjustment of the adjusting frame 51 is toggled to achieve clamping and installation of pipe fittings of different diameters. After the adjustment is completed, the limiting slider 57 is popped up by the spring 510 to slide in the inner cavity of the limiting storage groove 58, and at the same time, the L-shaped block 54 is pushed to insert into the inner cavity of the ratchet 53, and then the adjusting frame 51 is clamped and fixed, and then the rotating frame 4 is cooperated to install the welding robot body 1 on the outside of the pipe fitting, and then the welding robot body 1 can be rotated in a circle around the pipe fitting for welding, thereby improving the convenience of using the welding robot.

[0027] like Figure 2 and Figure 5 As shown, a tension spring 14 is fixedly connected to the bottom of the inner cavity of the welding robot body 1, and one end of the tension spring 14 is fixedly connected to the T-shaped sliding column 13. A triangular protrusion is arranged on the lower end face of the grinding and cleaning plate 9, and grinding stripes are arranged on the surface of the triangular protrusion for grinding burrs at the welding part of the workpiece to be welded. A sponge brush is attached to the lower end face of the grinding and cleaning plate 9 through Velcro for wiping oil stains on the surface of the workpiece to be welded.

[0028] like Figure 2 , Figure 5 and Fig. 9 As shown, a support frame 16 is installed at the bottom of the inner cavity of the welding robot body 1, a feed rack 15 is installed inside the upper end of the support frame 16, and solder wire 17 is rolled up outside the feed rack 15, and two pressing blocks 12 are symmetrically fixed to the lower end surface of the sealing cover 2, and the two pressing blocks 12 are abutted against the support frame 16 to limit the feed rack 15.

[0029] like Figure 2 , Figure 5 and Fig. 9 As shown, a fixing frame 34 is installed at the bottom of the inner cavity of the welding robot body 1, and one end of the fixing frame 34 is rotatably connected to two unloading rollers 18, and a plurality of rubber teeth blocks are arranged outside the two unloading rollers 18 for squeezing and fixing the solder wire 17 for transportation, and one end of one unloading roller 18 is fixedly connected to a driven pulley 20, and one end of the other unloading roller 18 is fixedly connected to a driving pulley 35, and the driving pulley 35 is externally connected to a belt, and one end of the belt is transmission-connected to the driven pulley 20, and the belt is installed in an 80-degree angle to drive the two unloading rollers 18 to rotate in opposite directions, and one end of the driving pulley 35 is fixedly connected to a servo motor 19, and the servo motor 19 is installed at the bottom of the inner cavity of the welding robot body 1.

[0030] Specifically, when welding the pipe fitting, the welding robot body 1 is installed on the outside of the pipe fitting, and then the clamping adjustment component 5 is used to cooperate with the rotating frame 4 to clamp the pipe fitting, and the welding robot body 1 is used to drive the T-shaped slide column 13 to move downward, and the T-shaped slide column 13 drives the grinding and cleaning plate 9 and the wiping plate 8 to press the pipe fitting, and at the same time, the welding robot body 1 drives the laser heater 11 and the guide tube 10 to approach the pipe fitting, and then drives the welding robot body 1 to rotate in a ring around the pipe fitting, and at the same time, the servo motor 19 is started to rotate the transmission pulley 35, and the transmission belt of the transmission pulley 35 drives the driven pulley 20 to rotate, and the transmission pulley 35 and the driven pulley 20 are installed with belts in 80% of the interior, and then the transmission pulley 35 and the driven pulley 20 are rotated in opposite directions, so that the transmission pulley 35 and the driven pulley 20 drive the discharge roller 18 to rotate synchronously, and the outside of the discharge roller 18 is evenly provided with rubber teeth, and then the rubber teeth clamp is used The brazing wire solder is transported so that the brazing wire solder is discharged through the guide tube 10 and adheres to the surface of the pipe to be welded, and then the laser heater 11 is used to heat and melt the brazing wire solder to form a brazing liquid, and then the pipe is welded and fixed using the brazing liquid. When the welding robot body 1 rotates around the pipe, it will drive the grinding and cleaning plate 9 to rotate synchronously, and then the oil, dust and burrs on the surface of the pipe are cleaned. Moreover, the lower end surface of the grinding and cleaning plate 9 is provided with a triangular protrusion, and then the triangular protrusion is used to grind the interface of the two pipes to be welded to improve the flatness of the joint, so that the brazing liquid can better connect and fix the two pipes and maintain the strength of the weld. This solves the problem that if the existing automated welding robot does not clean and grind off the oil, burrs or dust on the welding joint of the workpiece to be welded before welding, it will cause the melted brazing liquid to be difficult to penetrate into the welding seam of the two welding workpieces, and form a sticky welding effect, while affecting the firmness of the workpiece after welding. Example

[0031] like Figure 1 , Figure 7 and Figure 8As shown, a discharge port 30 is provided at the bottom of the inner cavity of the welding robot body 1, and the discharge port 30 is connected to the inner cavity of the material guide tube 10. A cooling cavity 21 is provided inside the lower end surface of the welding robot body 1, and the cooling cavity 21 is used for circulating coolant. The material guide tube 10 is made of semiconductor material and is used for cooling the solder wire 17.

[0032] like Figure 1 , Figure 7 and Figure 8 As shown, a coolant circulation component is provided at the bottom of the inner cavity of the welding robot body 1, and the cooling circulation component includes a pumping chamber 25 opened in the inner cavity of the welding robot body 1, and the inner cavity of the pumping chamber 25 is slidably connected with a piston plate 26, and a plurality of drainage ports are provided on the upper end surface of the piston plate 26, and the inner cavities of the plurality of drainage ports are all provided with one-way valves, and the one-way valve can only be flipped open toward the bottom of the inner cavity of the pumping chamber 25, and the inner cavity of the welding robot body 1 is provided with two storage chambers 24 located on both sides of the pumping chamber 25.

[0033] like Figure 7 and Figure 8 As shown, a water inlet chamber 22 is provided at the bottom of the inner cavity of the storage chamber 24, and the water inlet chamber 22 is connected to the cooling chamber 21, a water return chamber 23 is provided on the inner wall of the cooling chamber 21, a water pumping pipe 29 is fixedly connected to the bottom of the inner cavity of the welding robot body 1, and the water pumping pipe 29 is connected to the water return chamber 23, a connecting port 28 is provided on the inner wall of the water pumping chamber 25, and one end of the water pumping pipe 29 is fixedly connected to the connecting port 28, a one-way valve is provided in the inner cavity of the connecting port 28, and the one-way valve can only be flipped open into the water pumping chamber 25, a water return port is provided on the inner wall of the water pumping chamber 25, and the water return port is connected to the storage chamber 24.

[0034] like Figure 7 and Figure 8 As shown, two mounting blocks 36 are symmetrically fixed on both sides of the lower end surface of the welding robot body 1, and the inner cavities of the two mounting blocks 36 are both provided with synchronous motors 32, one end of the mounting blocks 36 is rotatably connected with a driving wheel 7, and the driving wheel 7 is fixedly connected to the output shaft end of the synchronous motor 32, and one driving wheel 7 is located in the inner cavity of the mounting block 36 and is fixedly connected with a transmission bevel gear 31, the transmission bevel gear 31 is fixedly connected to the output shaft end of the synchronous motor 32, the transmission bevel gear 31 is meshingly connected with a driven bevel gear 33, a screw rod 27 is fixedly connected inside the driven bevel gear 33, the screw rod 27 is rotatably connected in the water pumping chamber 25, and the screw rod 27 is threadedly connected to the piston plate 26.

[0035] Specifically, after the welding robot body 1 is installed on the outside of the pipe fitting, the synchronous motor 32 is started to drive the transmission bevel gear 31 to drive the driving wheel 7 to rotate, and then the driving wheel 7 drives the welding robot body 1 to rotate in a circular shape around the pipe fitting. During the rotation process, the transmission bevel gear 31 will also engage the transmission driven bevel gear 33 to rotate, and then drive the screw 27 to rotate, and at the same time, the threaded transmission piston plate 26 slides back and forth up and down in the water pumping chamber 25. When the piston plate 26 moves downward, it will pump the air in the upper wall of the water pumping chamber 25, and form a negative pressure to open the one-way valve in the inner cavity of the connecting port 28, and then the coolant is extracted from the cooling chamber 21 in conjunction with the water pumping pipe 29, and then discharged into the water pumping chamber 25. When the piston plate 26 moves upward, it will squeeze the air in the upper wall of the water pumping chamber 25. The air is drawn in and pressure is formed to open the one-way valve in the piston plate 26, and then the coolant is discharged into the lower wall of the water pumping chamber 25 and flows back to the storage chamber 24 through the water return port. The coolant in the storage chamber 24 flows into the cooling chamber 21 through the water inlet chamber 22 to cool the soldering wire in the inner cavity of the discharge port 30. Moreover, since the guide tube 10 is made of semiconductor material, the guide tube 10 can be used to cool the soldering wire after the coolant flows into the cooling chamber 21 to avoid the soldering wire melting in the guide tube 10 due to overheating, causing the guide tube 10 to be blocked. At the same time, the melting of too much soldering wire will also cause waste of solder, affecting the stress dispersion of the interface welding, resulting in insufficient strength of the welding joint and unstable welding.

[0036] The working principle is to align the two pipes to be welded with each other and clamp them on the workbench, while the aligned positions are in a suspended state, and then the adjusting frame 51 is installed on the outside of the two pipes to be welded, and at the same time, the rubber roller 6 is clamped on the outside of the pipes to increase the friction with the surface of the pipes, and then the torsion spring mechanism is used to drive the rotating frame 4 to rotate close to each other, and then drive the adjusting frame 51 and the two pipes to be welded to form an additive fixation, and when the rotating frame 4 is used to cooperate with the adjusting frame 51 to clamp and fix the pipes, the welding robot body 1 will drive the T-shaped slide column 13 to approach the pipes, so that the T-shaped slide column 13 drives the grinding and cleaning The cleaning plate 9 and the wiping plate 8 are pressed and fitted with the surface of the pipe fitting, and then the welding robot body 1 is driven to rotate in a circular shape around the pipe fitting, and then the grinding and cleaning plate 9 can grind and clean the surface oil stains at the joints of the two pipe fittings to be welded, and at the same time, the burrs can be polished to remove the burrs at the joints of the pipe fittings to prevent the oil stains, burrs and dust from affecting the soldering liquid from being integrated into the welding gap, causing unstable welding. After the pipe fittings are welded, the wiping plate 8 will move synchronously with the welding robot body 1, and then smooth the soldering liquid after the solder wire is melted, and then the unevenness of the weld surface can be reduced, thereby reducing the stress concentration that affects the welding firmness; When welding pipe fittings, the welding robot body 1 is installed on the outside of the pipe fittings, and then the clamping and adjusting assembly 5 is used to cooperate with the rotating frame 4 to clamp the pipe fittings, and the welding robot body 1 is used to drive the T-shaped slide column 13 to move downward, and the T-shaped slide column 13 drives the grinding and cleaning plate 9 and the wiping plate 8 to press the pipe fittings, and at the same time, the welding robot body 1 drives the laser heater 11 and the guide tube 10 to approach the pipe fittings, and then drives the welding robot body 1 to rotate in a ring around the pipe fittings, and at the same time, the servo motor 19 is started to rotate the transmission pulley 35, and the transmission belt of the transmission pulley 35 drives the driven pulley 20 to rotate, and the transmission pulley 35 and the driven pulley 20 are installed with belts in an 80% manner, and then the transmission pulley 35 and the driven pulley 20 are rotated in opposite directions, so that the transmission belt The wheel 35 and the driven pulley 20 drive the discharge roller 18 to rotate synchronously, and the outside of the discharge roller 18 is evenly provided with rubber teeth, and then the rubber teeth are used to clamp the brazing wire solder for transportation, so that the brazing wire solder is discharged through the guide tube 10 and fits the surface of the pipe to be welded, and then the laser heater 11 is used to heat and melt the brazing wire solder to form a brazing liquid, and then the pipe is welded and fixed with the brazing liquid, and when the welding robot body 1 rotates around the pipe, it will drive the grinding and cleaning plate 9 to rotate synchronously, and then the oil, dust and burrs on the surface of the pipe are cleaned, and the lower end surface of the grinding and cleaning plate 9 is provided with a triangular convex block, and then the triangular convex block will be used to grind the interface of the two pipes to be welded, so as to improve the flatness of the joint, so that the brazing liquid can better connect and fix the two pipes and maintain the strength of the weld; After the welding robot body 1 is installed on the outside of the pipe fitting, the synchronous motor 32 is started to drive the transmission bevel gear 31 to drive the driving wheel 7 to rotate, and then the driving wheel 7 drives the welding robot body 1 to rotate in a circular shape around the pipe fitting. During the rotation process, the transmission bevel gear 31 will also engage the transmission driven bevel gear 33 to rotate, and then drive the screw 27 to rotate, and at the same time, the threaded transmission piston plate 26 slides back and forth up and down in the water pumping chamber 25. When the piston plate 26 moves downward, it will pump the air in the upper wall of the water pumping chamber 25, and form a negative pressure to open the one-way valve in the inner cavity of the connecting port 28, and then the coolant is extracted from the cooling chamber 21 in conjunction with the water pumping pipe 29, and then discharged into the water pumping chamber 25. When the piston plate 26 moves upward, it will squeeze the air in the upper wall of the water pumping chamber 25. The gas is pumped and pressure is formed to open the one-way valve in the piston plate 26, and then the coolant is discharged into the lower wall of the water pumping chamber 25 and flows back to the storage chamber 24 through the return port, and the coolant in the storage chamber 24 flows into the cooling chamber 21 through the water inlet chamber 22, so as to cool down the soldering wire in the inner cavity of the discharge port 30. Moreover, since the guide tube 10 is made of semiconductor material, the guide tube 10 can be used to cool down the soldering wire after the coolant flows into the cooling chamber 21, so as to avoid the soldering wire melting in the guide tube 10 due to overheating, causing the guide tube 10 to be blocked. At the same time, the melting of too much soldering wire will also cause the waste of solder, which will affect the stress dispersion of the welding interface, resulting in the problem of insufficient strength of the welding interface and unstable welding.

[0037] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An automated welding robot, comprising a welding robot body (1) and a material guide pipe (10) mounted on the lower end surface of the welding robot body (1), wherein the material guide pipe (10) is used to guide and discharge brazing wire solder (17), and a laser heater (11) is arranged on the lower end surface of the welding robot body (1) on one side of the material guide pipe (10) for welding a workpiece in cooperation with the brazing wire solder (17) discharged from the material guide pipe (10), characterized in that: A hinge is fixedly connected to one end of the welding robot body (1), and a sealing cover (2) is fixedly connected to one end of the hinge; fixed blocks (3) are fixedly connected to both sides of the welding robot body (1); both ends of the fixed block (3) are rotatably connected to a rotating frame (4); a torsion spring mechanism is provided inside the fixed block (3), and both ends of the torsion spring mechanism are fixedly connected to the rotating frame (4); and one end of the rotating frame (4) is rotatably connected to a clamping adjustment component (5); The clamping adjustment component (5) comprises a connecting column (59) rotatably connected to the interior of one end of the rotating frame (4), the two ends of the connecting column (59) are fixedly connected to the adjustment frame (51), and the two sides of one end of the adjustment frame (51) are rotatably connected to rubber rollers (6); The lower end surface of the welding robot body (1) has two T-shaped sliding columns (13) that slide symmetrically, and the lower end of one of the T-shaped sliding columns (13) is externally rotatably connected to a grinding and cleaning plate (9), and the lower end of the other T-shaped sliding column (13) is externally rotatably connected to a wiping plate (8).

2. An automated welding robot according to claim 1, characterized in that: A rotating groove (52) is provided inside one end of the rotating frame (4); the connecting column (59) is located outside the inner cavity of the rotating groove (52) and is fixedly connected to a ratchet (53); a limited storage groove (58) is provided on the inner wall of the rotating groove (52); a limited slider (57) is slidably connected to the inner cavity of the limited storage groove (58); an L-shaped clamping block (54) is fixedly connected to one end of the limited slider (57); and a traction rope (55) is fixedly connected to the other end of the limited slider (57); a winding frame (56) is rotatably connected inside the rotating frame (4); and one end of the traction rope (55) is fixedly connected to the winding frame (56).

3. The automatic welding robot according to claim 2, characterized in that: A spring (510) is fixedly connected to the bottom of the inner cavity of the position-limiting storage groove (58), one end of the spring (510) is fixedly connected to the position-limiting sliding block (57), and the L-shaped clamping block (54) is used for inserting and engaging the ratchet wheel (53).

4. The automatic welding robot according to claim 1, characterized in that: A tension spring (14) is fixedly connected to the bottom of the inner cavity of the welding robot body (1), and one end of the tension spring (14) is fixedly connected to the T-shaped sliding column (13). A triangular protrusion is arranged on the lower end surface of the grinding and cleaning plate (9), and grinding stripes are arranged on the surface of the triangular protrusion for grinding burrs at the welding part of the workpiece to be welded. A sponge brush is attached to the lower end surface of the grinding and cleaning plate (9) by Velcro for wiping oil stains on the surface of the workpiece to be welded.

5. The automatic welding robot according to claim 1, characterized in that: A support frame (16) is installed at the bottom of the inner cavity of the welding robot body (1), a material discharge frame (15) is installed inside the upper end of the support frame (16), and solder wire (17) is rolled up outside the material discharge frame (15), and two pressing blocks (12) are symmetrically fixed to the lower end surface of the sealing cover (2), and the two pressing blocks (12) are in contact with the support frame (16) to limit the position of the material discharge frame (15).

6. The automatic welding robot according to claim 5, characterized in that: A fixing frame (34) is installed at the bottom of the inner cavity of the welding robot body (1), one end of the fixing frame (34) is rotatably connected to two unloading rollers (18), and the two unloading rollers (18) are provided with a plurality of rubber teeth blocks on the outside for squeezing and fixing the solder wire (17) for conveying, and one end of one unloading roller (18) is fixedly connected to a driven pulley (20), and one end of the other unloading roller (18) is fixedly connected to a driving pulley (35), the driving pulley (35) is externally connected to a belt, and one end of the belt is connected to the driven pulley (20), and the belt is installed in an 80-degree angle, and is used to drive the two unloading rollers (18) to rotate in opposite directions, and one end of the driving pulley (35) is fixedly connected to a servo motor (19), and the servo motor (19) is installed at the bottom of the inner cavity of the welding robot body (1).

7. The automatic welding robot according to claim 1, characterized in that: A discharge port (30) is provided at the bottom of the inner cavity of the welding robot body (1), and the discharge port (30) is communicated with the inner cavity of the material guide tube (10). A cooling cavity (21) is provided inside the lower end surface of the welding robot body (1), and the cooling cavity (21) is used for circulating cooling liquid. The material guide tube (10) is made of semiconductor material and is used for cooling the solder wire (17).

8. The automatic welding robot according to claim 7, characterized in that: A coolant circulation component is provided at the bottom of the inner cavity of the welding robot body (1), and the cooling circulation component includes a pumping cavity (25) opened in the inner cavity of the welding robot body (1), the inner cavity of the pumping cavity (25) is slidably connected to a piston plate (26), the upper end surface of the piston plate (26) is provided with a plurality of drainage ports, and the inner cavities of the plurality of drainage ports are all provided with one-way valves, and the one-way valves can only be flipped open toward the bottom of the inner cavity of the pumping cavity (25), and the inner cavity of the welding robot body (1) is provided with two storage cavities (24) located on both sides of the pumping cavity (25).

9. The automatic welding robot according to claim 8, characterized in that: The bottom of the inner cavity of the storage cavity (24) is provided with a water inlet cavity (22), and the water inlet cavity (22) is in communication with the cooling cavity (21); the inner wall of the cooling cavity (21) is provided with a water return cavity (23); the bottom of the inner cavity of the welding robot body (1) is fixedly connected with a water pumping pipe (29), and the water pumping pipe (29) is in communication with the water return cavity (23); the inner wall of the water pumping cavity (25) is provided with a connecting port (28), and one end of the water pumping pipe (29) is fixedly connected with the connecting port (28); the inner cavity of the connecting port (28) is provided with a one-way valve, and the one-way valve can only be turned over and opened into the water pumping cavity (25); the inner wall of the water pumping cavity (25) is provided with a water return port, and the water return port is in communication with the storage cavity (24).

10. The automatic welding robot according to claim 9, characterized in that: Two mounting blocks (36) are symmetrically fixedly connected to the lower end surface of the welding robot body (1), and the inner cavities of the two mounting blocks (36) are both provided with synchronous motors (32). One end of each mounting block (36) is rotatably connected to a driving wheel (7), and the driving wheel (7) is fixedly connected to the output shaft end of the synchronous motor (32). One of the driving wheels (7) is located in the inner cavity of the mounting block (36) and is fixedly connected to a transmission bevel gear (31), and the transmission bevel gear (31) is fixedly connected to the output shaft end of the synchronous motor (32). The transmission bevel gear (31) is meshingly connected to a driven bevel gear (33), and a screw rod (27) is fixedly connected inside the driven bevel gear (33), and the screw rod (27) is rotatably connected to the water pumping chamber (25), and the screw rod (27) is threadedly connected to the piston plate (26).

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