Welding equipment and welding method

Abstract

The invention relates to the technical field of welding machining, and discloses welding equipment and a welding method.The welding equipment comprises a cart, induction heating equipment, a connecting pipe, a welding gun, a winding protection module, a replacement pretreatment module and a path guiding module, and the whole welding position of the welding equipment can be adjusted conveniently; the release length of the connecting pipe is adjusted by the winding protection module corresponding to the position of a welding piece, so that stacking is prevented, the replacement pretreatment module performs anti-oxidation treatment on the connecting interface of the connecting pipe and the induction heating equipment, blockage is reduced, and the path guide module treats obstacle points in the moving path of the connecting pipe, so that friction is reduced; the length of the connecting pipe is dynamically adjusted according to the change of a welding scene and the distance of welding operation, pipe wall fatigue cracks caused by excessive stretching are reduced, early warning is triggered in combination with a preset threshold value, the abraded connecting pipe is replaced in time, jacking adjustment is set corresponding to a hindering contact point of a welding path, and the smoothness of the stretching process of the connecting pipe is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of welding processing, and more specifically, it relates to a welding device and a welding method. Background Art

[0002] In the industrial development environment, the use of handheld electric welding equipment is becoming increasingly widespread. It is generally used for welding various metal materials, such as low-carbon steel, stainless steel, aluminum alloy, etc. It is a very practical welding tool. However, there are still some deficiencies in the existing handheld welding equipment during use, especially in the design of the connecting pipe, which affects the safety and stability of the welder equipment.

[0003] Existing handheld welding equipment generally consists of a welding torch, a connecting pipe, and an induction heating module. When not in use, the connecting pipes are stacked on the ground and not effectively stored. The randomly placed pipes are likely to trip the operator and even cause the pipes to break, resulting in the leakage of the shielding gas in the connecting pipe and triggering safety accidents. Correspondingly, during use, the connecting pipes stacked on the ground are curled and bent, resulting in the obstruction of the internal shielding gas flow, affecting the stability of the shielding gas supply, and further affecting the welding quality. At this time, the operator will straighten the connecting pipe by dragging it multiple times to make the shielding gas flow normally. However, after multiple times, the interfaces of the connecting pipe are likely to become loose, affecting the sealing performance of the connecting pipe.

[0004] Secondly, when replacing the fatigued and worn shielding gas connecting pipe, the oxides accumulated at the interface with the induction heating module block the disassembly of the old pipe. If the residual impurities are not completely removed, they will contaminate the interface of the new connecting pipe and cause air leakage. And after replacing the new connecting pipe, due to the differences in manual operations, it is difficult to fully ensure the sealing performance at the interface between the connecting pipe and the interface. If welding operations are directly carried out without inspection, it is easy to cause certain safety accidents.

[0005] And when the welding object is a complex structure, such as a truss, etc., during the welding process, the moving path of the welding torch is relatively complex, which may cause the pipeline to wind around other parts of the welding object, or there are many bending areas in the pipeline, hindering the movement of the welding torch and resulting in relatively large pipeline wear. Summary of the Invention

[0006] The present invention provides a welding device and a welding method to solve the technical problem in the related art of lacking protection for the welding shielding gas connecting pipe during the moving path and facilitating its convenient disassembly and replacement.

[0007] The present invention provides a welding device and a welding method, including:

[0008] A trolley, an induction heating device, a connecting pipe, and a welding torch, which are convenient for adjusting the welding position of the whole welding device;

[0009] A coiling protection module, a disassembly and replacement pretreatment module, and a path guiding module. The coiling protection module adjusts the release length of the connecting pipe corresponding to the position of the welded part to prevent stacking. The disassembly and replacement pretreatment module performs anti-oxidation treatment on the connection interface between the connecting pipe and the induction heating device to reduce blockage. The path guiding module processes the obstacle points in the moving path of the connecting pipe to reduce friction;

[0010] In the coiling protection module, there is an electric coiling drum rotatably connected to the induction heating device, and a rotary encoder is installed at the end of the rotating shaft of the electric coiling drum to record the number of rotations of the electric coiling drum.

[0011] As a further scheme of the present invention: The coiling protection module includes:

[0012] An acceleration sensor, the acceleration sensor is fixedly installed at the bottom of the cart. The top of the induction heating device is fixedly connected with a protective shell. An observation window is opened in the middle of the rear side of the protective shell. The top of the induction heating device is fixedly connected with a bottom frame inside the protective shell. An electric telescopic rod is fixedly connected inside the bottom frame. The telescopic rod end of the electric telescopic rod is fixedly connected with a special-shaped seat. The special-shaped seat is slidably connected to the inner wall of the bottom frame and several dialing columns are fixedly connected to its top.

[0013] As a further scheme of the present invention: A semi-toothed gear is rotatably connected to the top of the induction heating device. The semi-toothed gear is meshed with each dialing column. Touching parts are fixedly connected to the middle parts on both sides of the semi-toothed gear. A marking plate is fixedly connected to the top of the semi-toothed gear.

[0014] As a further scheme of the present invention: The disassembly and replacement pretreatment module includes:

[0015] A main bevel gear, the main bevel gear is fixedly connected to the bottom of the semi-toothed gear. A secondary bevel gear is rotatably connected to the top of the induction heating device. The secondary bevel gear is meshed with the main bevel gear. A pair of belt pulleys are rotatably connected to the middle of the rear side of the induction heating device. The two belt pulleys are connected by a connecting belt. The upper belt pulley is fixedly connected to the secondary bevel gear.

[0016] As a further scheme of the present invention: An eccentric rod is fixedly connected to the middle of the edge side of the lower belt pulley. A guiding frame is fixedly connected to the rear side surface of the induction heating device. Connecting plates are slidably connected to the middle parts on both sides of the guiding frame. Arc-shaped frames are fixedly connected to the tops of the two connecting plates. The outer wall of the eccentric rod is slidably connected to the inner wall of the arc-shaped frame. Spraying pipes are fixedly connected to the bottoms of the two connecting plates. A plurality of atomizing nozzles are fixedly connected to the inner wall of the spraying pipe in a circle. The spraying direction of the atomizing nozzles is directly opposite to the connection interface between the connecting pipe and the induction heating device.

[0017] As a further solution of the present invention: two liquid tanks fixedly connected to the induction heating device, a three-way hose is fixedly connected to the bottom of both sides of the liquid tanks, one end of the three-way hose far from both sides of the liquid tanks is fixedly penetrated into the interior of the spray pipe, and electromagnetic valves are fixedly connected to the outer walls of both ends of the three-way hose close to both sides of the liquid tanks. A receiving frame is clamped and arranged directly below the spray pipe in the middle of the cart.

[0018] As a further solution of the present invention: the path guiding module includes:

[0019] A pipe climbing robot, the pipe climbing robot is sleeved on the outer wall of the connecting pipe. A plurality of infrared obstacle avoidance probes are arranged around one side of the pipe climbing robot close to the welding torch. A plurality of electric push rods are rotatably connected around the pipe climbing robot. A plurality of cavity plates are rotatably arranged around the end of the pipe climbing robot. The electric push rods are respectively rotatably connected to the cavity plates through two groups of shaft seats. Compensation springs are sleeved on the outer walls of the electric push rods, and both ends of the compensation springs are fixedly connected to the shaft seats on both sides.

[0020] As a further solution of the present invention: a plurality of rubber strips are fixedly connected to the inner side surfaces of the cavity plates. Central pipes are rotatably connected to the middle parts of the sides of the cavity plates far from the pipe climbing robot. Branch pipes are fixedly connected to the middle parts of both sides of the central pipes. A plurality of nozzles are fixedly connected to the middle parts of both sides of the branch pipes. The spraying angles of the nozzles on both sides are symmetrically inclined. Sealing plugs are clamped in the middle parts of the cavity plates.

[0021] As a further solution of the present invention: a control module is fixedly installed on the outer wall of the induction heating device. The control module is electrically connected to the acceleration sensor, the electric take-up reel, the rotary encoder, the electric telescopic rod, the electromagnetic valve, the pipe climbing robot, the infrared obstacle avoidance probe, and the electric push rod.

[0022] As a further solution of the present invention: a welding method is applied to a welding device, including the following steps:

[0023] Step 1: According to the position of the welded part, push the cart to the corresponding area, remove the welding torch from the cart, and adjust the electric take-up reel to rotate and release the corresponding length of the connecting pipe for the welding position of the corresponding welded part to reduce cross-stacking.

[0024] Step 2: When the path moved by the welding torch during welding in Step 1 is relatively complex, make the pipe climbing robot move along the outer wall of the released connecting pipe. When there is an obstacle point between the pipe and the welded part to be welded, use the path guiding module to jack up the pipe at the position of the blocking point away from the welded part to be welded, so that the pipe climbing robot can pass smoothly. And during the passing process, spray lubricant on the outer wall of the welded part to be welded.

[0025] Step 3: After welding is completed, rewind the connecting tube to the middle of the electric reel in step 1, and hang the welding gun to its original position.

[0026] The beneficial effects of the present invention are:

[0027] The present invention sets a strain-type direction-adjustable winding protection module for the welding equipment, adjusts the winding and releasing of the welding shielding gas connecting pipe, dynamically adjusts the length of the connecting pipe according to changes in the welding scene and the distance of the welding operation, avoids excessive stretching or accumulation of the connecting pipe, optimizes the pipe tension in real time, reduces fatigue cracks in the pipe wall caused by excessive stretching, reduces the probability of shielding gas leakage, counts the winding and releasing actions of the corresponding connecting pipe, counts the number of times the connecting pipe is used, triggers an early warning based on a preset threshold, and promptly replaces the connecting pipe that is worn and has fatigue cracks, avoids leakage of welding shielding gas, and eliminates potential leakage hazards.

[0028] The present invention provides prompts by setting an adjustable color marking plate corresponding to the connecting pipe winding count threshold, so that the operator can intuitively understand the service life of the protective gas connecting pipe. The operator can quickly judge the remaining service life of the connecting pipe without consulting the data, thereby shortening the manual inspection time. The linkage design of the color marking and the rotary encoder can prevent manual counting errors, ensure that the decision on pipe replacement is based on real data, and reduce the risk of misoperation.

[0029] The present invention arranges a spraying mechanism beside the interface between the connecting pipe and the induction heating module, and simultaneously sprays the inner wall of the interface with an anti-rust lubricant twice during the releasing and winding process of the connecting pipe, thereby removing the oxide layer generated on the inner wall of the interface due to long-term contact with high temperature or environmental corrosion, reducing the residual impurity rate, avoiding oxide particles from mixing into the welding shielding gas or the induction heating medium, reducing the residual oxide impurities in the inner wall of the interface, and facilitating the subsequent removal, replacement and installation of the connecting pipe.

[0030] The present invention arranges a pipe-climbing robot on the outer wall of the released connecting pipe, and adjusts the connecting pipe in response to the obstacle contact points appearing in the welding path, so that the connecting pipe and the outer wall of the weldment are separated by a certain distance, so that the coil robot can pass smoothly to guide the subsequent path, and sprays lubricant on the outer wall of the weldment at the contact point during the passing process, so that the friction between the connecting pipe and the weldment to be welded is reduced, thereby reducing friction and improving the smoothness of the pipeline stretching process. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall three-dimensional structure of a welding device proposed by the present invention;

[0032] Figure 2 is a side view schematic diagram of a welding device proposed by the present invention;

[0033] Figure 3 is a welding device proposed by the present invention Figure 2 The enlarged schematic view of part A in;

[0034] Figure 4 is the rear view schematic diagram of a welding device proposed by the present invention;

[0035] Figure 5 is the vertical sectional view schematic diagram of the protective shell of a welding device proposed by the present invention;

[0036] Figure 6 is a welding device proposed by the present invention Figure 5 The enlarged schematic view of part B in;

[0037] Figure 7 is the top view schematic diagram of the overall structure of a welding device proposed by the present invention;

[0038] Figure 8 is a welding device proposed by the present invention Figure 7 The enlarged schematic view of part C in;

[0039] Figure 9 is a welding device proposed by the present invention Figure 7 The enlarged schematic view of part D in;

[0040] Figure 10 is the bottom view schematic diagram of the overall structure of a welding device proposed by the present invention;

[0041] Figure 11 is a welding device proposed by the present invention Figure 10 The enlarged schematic view of part E in

[0042] In the figure: 1, trolley; 2, induction heating device; 3, connecting pipe; 4, welding torch;

[0043] The winding protection module 5 includes:

[0044] 501, acceleration sensor; 502, electric winding drum; 503, rotary encoder; 504, protective shell; 505, observation window; 506, bottom frame; 507, electric telescopic rod; 508, special-shaped seat; 509, dial post; 510, semi-toothed gear; 511, touch part; 512, marking plate.

[0045] The disassembly and replacement pretreatment module 6 includes:

[0046] 601, main bevel gear; 602, sub-bevel gear; 603, pulley; 604, connecting belt; 605, eccentric rod; 606, guide frame; 607, connecting plate; 608, arc-shaped frame; 609, spray pipe; 610, atomizing nozzle; 611, liquid tank; 612, three-way hose; 613, solenoid valve; 614, receiving frame.

[0047] The path guiding module 7 includes:

[0048] 701, pipe climbing robot; 702, infrared obstacle avoidance probe; 703, electric push rod; 704, cavity plate; 705, rubber strip; 706, central pipe; 707, branch pipe; 708, nozzle; 709, compensation spring; 710, sealing plug.

[0049] 8, control module. Detailed implementation manners

[0050] Now, the subject matter described herein will be discussed with reference to example embodiments. It should be understood that discussing these embodiments is only to enable those skilled in the art to better understand and thus implement the subject matter described herein. Without departing from the scope of protection of the content of this specification, changes can be made to the functions and arrangements of the elements discussed. Each example can omit, substitute, or add various processes or components as needed. Additionally, the features described in some examples can also be combined in other examples.

[0051] Example 1

[0052] As shown in Figure 1 , Figure 4 and Figure 7 , a welding device and a welding method include:

[0053] A trolley 1, an induction heating device 2, a connecting pipe 3, and a welding torch 4, which facilitate adjusting the welding position of the entire welding device;

[0054] A winding protection module 5, a disassembly and replacement preprocessing module 6, and a path guiding module 7. The winding protection module 5 adjusts the release length of the connecting pipe 3 corresponding to the position of the welded part to prevent stacking. The disassembly and replacement preprocessing module 6 performs anti-oxidation treatment on the connection interface between the connecting pipe 3 and the induction heating device 2 to reduce blockage. The path guiding module 7 processes the obstacle points in the moving path of the connecting pipe 3 to reduce friction;

[0055] In the winding protection module 5, an electric winding drum 502 rotatably connected to the induction heating device 2 is provided, and a rotary encoder 503 is installed at the end of the rotating shaft of the electric winding drum 502 to record the number of rotations of the electric winding drum 502;

[0056] Specifically, the winding protection module 5 adjusts the winding and unwinding of the welding protection gas connecting pipe 3, dynamically adjusts the length of the connecting pipe 3 according to the changes in the welding scenario and the distance of the welding operation, avoids over-stretching or accumulation of the connecting pipe 3, optimizes the pipe tension in real time, reduces the fatigue cracks on the pipe wall caused by over-stretching, reduces the probability of protective gas leakage, and counts the winding and unwinding actions of the connecting pipe 3 through a rotary encoder 503. The number of rotations of the electric winding drum 502 is recorded to count the usage times of the connecting pipe 3, and a warning is triggered in combination with a preset threshold value to timely replace the connecting pipe 3 with wear and fatigue cracks, avoid the leakage of the welding protection gas, and eliminate potential leakage hazards.

[0057] As Figure 1 and Figures 4 - 8 shown, the winding protection module 5 includes:

[0058] An acceleration sensor 501, the acceleration sensor 501 is fixedly installed at the bottom of the trolley 1, a protective shell 504 is fixedly connected to the top of the induction heating device 2, an observation window 505 is opened in the middle of the rear side of the protective shell 504, a bottom frame 506 is fixedly connected to the top of the induction heating device 2 inside the protective shell 504, an electric telescopic rod 507 is fixedly connected inside the bottom frame 506, the telescopic rod end of the electric telescopic rod 507 is fixedly connected with a special-shaped seat 508, the special-shaped seat 508 is slidably connected to the inner wall of the bottom frame 506 and several dial posts 509 are fixedly connected to the top thereof, a semi-toothed gear 510 is rotatably connected to the top of the induction heating device 2, the semi-toothed gear 510 is meshed with each dial post 509, touch parts 511 are fixedly connected to the middle parts on both sides of the semi-toothed gear 510, and a marking plate 512 is fixedly connected to the top of the semi-toothed gear 510;

[0059] Specifically, the acceleration sensor 501 monitors the overall movement state of the welding equipment, and the change in the gravity direction triggers a sensor signal. When the trolley 1 moves backward, the motor driving the electric winding drum 502 operates to release the connecting pipe 3. When the trolley 1 is stationary, the release stops. When the trolley 1 moves forward, the sensor returns to the initial state, and the signal switches to a recovery instruction. The electric winding drum 502 automatically winds up the pipeline, dynamically adjusts the length of the connecting pipe 3 according to the welding operation distance, and avoids over-stretching or accumulation of the connecting pipe 3;

[0060] The number of times the connecting pipe 3 is used can be obtained corresponding to the winding and unwinding actions of the electric winding drum 502. The rotary encoder 503 records and counts in real time and transmits signals to the control module 8. When the winding times reach the set moderate fatigue threshold, the control module 8 regulates the operation of the electric telescopic rod 507 to push the special-shaped seat 508 to slide along the inner wall of the bottom frame 506 close to the side of the welding torch 4. During the movement, the semi-tooth gear 510 is rotated by 90 degrees through each dial post 509, and the star pattern surface of the marking plate 512 is displayed through the observation window 505 in the middle of the protective shell 504. Correspondingly, when the winding times of the connecting pipe 3 reach the severe fatigue threshold, the rotary encoder 503 drives the electric telescopic rod 507 through signal transmission, so that the special-shaped seat 508 moves reversely along the inner wall of the bottom frame 506, driving the marking plate 512 to be adjusted by 180 degrees. The two touch parts 511 are abutted against the side wall of the special-shaped seat 508 to maintain stability, and the side of the grid pattern is displayed. During daily inspections, the staff can promptly discover the welding equipment that needs to replace the connecting pipe 3, ensuring the safety of subsequent welding operations.

[0061] Embodiment 2

[0062] As Figures 2 - 3 、 Figure 8 and Figure 11 shown, on the basis of Embodiment 1, synchronous treatment measures are taken for the convenience of subsequent disassembly and replacement of the connecting pipe 3. The disassembly and replacement pretreatment module 6 includes:

[0063] The main bevel gear 601 is fixedly connected to the bottom of the semi-tooth gear 510. The top of the induction heating device 2 is rotatably connected with a secondary bevel gear 602. The secondary bevel gear 602 is meshed and connected with the main bevel gear 601. The middle part of the rear side of the induction heating device 2 is rotatably connected with a pair of belt pulleys 603. The two belt pulleys 603 are connected by a connecting belt 604. The upper belt pulley 603 is fixedly connected with the secondary bevel gear 602. The middle part of the edge side of the lower belt pulley 603 is fixedly connected with an eccentric rod 605. A guide frame 606 is fixedly connected to the rear side surface of the induction heating device 2. The middle parts of both sides of the guide frame 606 are slidably connected with connecting plates 607. The tops of the two connecting plates 607 are fixedly connected with an arc-shaped frame 608. The outer wall of the eccentric rod 605 is slidably connected to the inner wall of the arc-shaped frame 608. The bottoms of the two connecting plates 607 are fixedly connected with a spray pipe 609. A plurality of atomizing nozzles 610 are fixedly connected to the inner wall of the spray pipe 609 in a circle. The spraying direction of the atomizing nozzles 610 is directly opposite to the connection interface between the connecting pipe 3 and the induction heating device 2. Two liquid tanks 611 fixedly connected to the induction heating device 2. The bottoms of the two liquid tanks 611 are fixedly connected with a three-way hose 612. One end of the three-way hose 612 far away from the two liquid tanks 611 is fixedly penetrated into the interior of the spray pipe 609. Solenoid valves 613 are fixedly connected to the outer walls of both ends of the three-way hose 612 close to the two liquid tanks 611. A receiving frame 614 is clamped and arranged directly below the spray pipe 609 in the middle of the trolley 1;

[0064] Specifically, corresponding to the two counting marks of the winding turns of the connecting pipe 3 in the winding protection module 5, during the rotation of both sides of the marking plate 512, the main bevel gear 601 can be driven to rotate synchronously, and the upper belt pulley 603 is driven to rotate through the meshed secondary bevel gear 602, and the lower belt pulley 603 is driven to rotate under the cooperation of the connecting belt 604. The eccentric rod 605 rotates synchronously with the lower belt pulley 603, and drives the arc-shaped frame 608 sleeved on its outer wall to move back and forth in the vertical direction. The spray pipe 609 is connected and moves synchronously with the arc-shaped frame 608 under the cooperation of the two connecting plates 607, and the moving direction is limited with the assistance of the guide frame 606 to ensure that the spray pipe 609 can be directly opposite to the connection interface between the connecting pipe 3 and the induction heating device 2. Open the solenoid valve 613 on one side of the liquid tank 611 filled with rust inhibitor, so that the rust inhibitor flows along one end of the three-way hose 612 into the interior of the spray pipe 609, and is output through each atomizing nozzle 610 to spray and remove rust at the connection interface between the connecting pipe 3 and the induction heating device 2, and finally the dripping rust inhibitor coating drops into the interior of the receiving frame 614 for collection.

[0065] Embodiment III

[0066] As Figure 7 and Figure 9As shown in the figure, in the above embodiment, the present application sets auxiliary measures for the movement path of the connecting pipe 3 based on the scene change of the welding of the welded parts. The path guiding module 7 includes:

[0067] A pipe climbing robot 701 is sleeved on the outer wall of the connecting pipe 3. A number of infrared obstacle avoidance probes 702 are arranged around one side of the pipe climbing robot 701 close to the welding torch 4. A number of electric push rods 703 are rotatably connected around the pipe climbing robot 701. A number of cavity plates 704 are rotatably arranged around the end of the pipe climbing robot 701. The electric push rods 703 are respectively rotatably connected to the cavity plates 704 through two groups of shaft seats. Compensation springs 709 are sleeved on the outer walls of the electric push rods 703. The two ends of the compensation springs 709 are fixedly connected to the shaft seats on both sides. A number of rubber strips 705 are fixedly connected to the inner sides of the cavity plates 704. A central pipe 706 is rotatably connected to the middle of the side of the cavity plate 704 away from the pipe climbing robot 701. Two middle parts of the central pipe 706 are fixedly connected with branch pipes 707. A number of spray heads 708 are fixedly connected to the middle parts of the two branch pipes 707. The spraying angles of the two spray heads 708 are symmetrically inclined. Sealing plugs 710 are clamped in the middle of the cavity plates 704. A control module 8 is fixedly installed on the outer wall of the induction heating device 2. The control module 8 is electrically connected to the acceleration sensor 501, the electric take-up reel 502, the rotary encoder 503, the electric telescopic rod 507, the solenoid valve 613, the pipe climbing robot 701, the infrared obstacle avoidance probe 702, and the electric push rod 703;

[0068] Specifically, the pipe climbing robot 701 moves on the outer wall of the connecting pipe 3, and four-direction infrared obstacle avoidance probes 702 are arranged on one side of it close to the welding torch 4 to detect obstacle points on the welding movement path of the connecting pipe 3. When contact point obstacles are sensed in a certain direction, after the electric push rod 703 receives the signal transmission from the infrared obstacle avoidance probe 702, it starts to operate, drives the corresponding cavity plate 704 on that side to rotate, and pushes and separates the connecting pipe 3 attached to the outer wall of the welded part. The setting of the rubber strip 705 enables the cavity plate 704 to be in flexible contact with the connecting pipe 3 to avoid scratching. Finally, a certain distance is maintained between the outer wall of the connecting pipe 3 and the welded part. The setting of the compensation spring 709 can improve the stability of the adjustment process, ensure that the pipe climbing robot 701 can smoothly pass through this section of the obstacle area, and trigger the opening of the valve on the outer wall of the delivery pipe connecting the central pipe 706 and the cavity plate 704 during the passing process, and output the lubricant inside the cavity plate 704 from the spray heads 708 on the two branch pipes 707. The two spray heads 708 are symmetrically inclined. Driven by the reverse output forces on both sides when the lubricant is ejected, the central pipe 706 makes a rotational movement, driving the lubricant to rotate and spray on the outer wall of the welded part. The setting of the sealing plug 710 seals the lubricant inside the cavity plate 704 and is convenient for adding lubricant.

[0069] A welding method, applied to a welding device, comprising the following steps:

[0070] Step 1: According to the position of the welded part, push the trolley 1 to the corresponding area, remove the welding torch 4 from the trolley 1, and adjust the electric winding drum 502 to rotate to release the connecting pipe 3 of the corresponding length, reducing cross-stacking;

[0071] Step 2: When the path that the welding torch 4 moves along during welding in Step 1 is relatively complex, make the pipe-climbing robot 701 move along the outer wall of the released connecting pipe 3. When there is an obstacle point between the pipe and the part to be welded, use the path guiding module 7 to lift the pipe at the position of the blocking point away from the part to be welded, so that the pipe-climbing robot 701 can pass smoothly. During the passing process, spray lubricant on the outer wall of the part to be welded;

[0072] Step 3: After welding, wind the connecting pipe 3 back and store it in the middle of the electric winding drum 502 corresponding to Step 1, and hang the welding torch 4 back to its original position;

[0073] Working principle:

[0074] First of all, move the whole welding device to the welding area through the trolley 1, and adjust the length of the connecting pipe 3 used according to the welding position. The acceleration sensor 501 monitors the moving state of the whole welding device. When the gravity direction changes, it triggers a sensor signal. When the trolley 1 moves backward, the motor driving the electric winding drum 502 operates to release the connecting pipe 3. When the trolley 1 stops, the release stops. When the trolley 1 moves forward, the sensor returns to the initial state, and the signal switches to a recovery instruction. The electric winding drum 502 automatically winds up the pipeline, dynamically adjusting the length of the connecting pipe 3 according to the welding operation distance to avoid over-stretching or piling up of the connecting pipe 3;

[0075] The number of times the connecting pipe 3 is used can be obtained corresponding to the winding and unwinding actions of the electric winding drum 502. The rotary encoder 503 records and counts in real time and transmits signals to the control module 8. When the winding times reach the set moderate fatigue threshold, the control module 8 regulates the operation of the electric telescopic rod 507 to push the special-shaped seat 508 to slide along the inner wall of the bottom frame 506 on the side close to the welding torch 4. During the movement, each dial post 509 drives the semi-toothed gear 510 to rotate by 90 degrees, and the star pattern surface of the marking plate 512 is displayed through the observation window 505 in the middle of the protective shell 504. Correspondingly, when the winding times of the connecting pipe 3 reach the severe fatigue threshold, the rotary encoder 503 drives the electric telescopic rod 507 through signal transmission, so that the special-shaped seat 508 moves reversely along the inner wall of the bottom frame 506, driving the marking plate 512 to adjust by 180 degrees and displaying the side of the grid pattern. The two side touch parts 511 are in contact with the side wall of the special-shaped seat 508 to maintain stability. During daily inspections, the staff can promptly discover the welding equipment that needs to replace the connecting pipe 3, ensuring the safety of subsequent welding operations;

[0076] At the same time, during the rotation of both sides of the marking plate 512, the main bevel gear 601 can be driven to rotate synchronously, and the driven bevel gear 602 driven by meshing drives the upper pulley 603 to rotate, and drives the lower pulley 603 to rotate under the cooperation of the connecting belt 604. The eccentric rod 605 rotates synchronously with the lower pulley 603, and drives the arc-shaped frame 608 sleeved on its outer wall to move back and forth in the vertical direction. The spray pipe 609 is connected to the arc-shaped frame 608 through the cooperation of the two side connecting plates 607 and moves synchronously, and the moving direction is limited with the assistance of the guide frame 606 to ensure that the spray pipe 609 can be directly aimed at the connection interface between the connecting pipe 3 and the induction heating device 2;

[0077] Open the solenoid valve 613 on one side of the liquid tank 611 filled with rust inhibitor, so that the rust inhibitor flows along one end of the three-way hose 612 into the interior of the spray pipe 609 and is output through each atomizing nozzle 610 to spray and remove rust at the connection interface between the connecting pipe 3 and the induction heating device 2, and finally the dripping rust inhibitor coating drips into the interior of the receiving frame 614 for collection;

[0078] During the welding operation, the pipe-climbing robot 701 moves on the outer wall of the connecting pipe 3, and four-direction infrared obstacle avoidance probes 702 are arranged on the side close to the welding torch 4 to detect obstacle points on the welding movement path of the connecting pipe 3. When a contact point obstacle is sensed in a certain direction, after receiving the signal transmission from the infrared obstacle avoidance probe 702, the electric push rod 703 starts to operate, drives the cavity plate 704 arranged correspondingly on that side to rotate, and pushes and jacks open the connecting pipe 3 attached to the outer wall of the welded part. The rubber strip 705 enables the cavity plate 704 to be in flexible contact with the connecting pipe 3 to avoid scratching. Finally, a certain distance is maintained between the outer wall of the connecting pipe 3 and the welded part. The setting of the compensation spring 709 can improve the stability of the adjustment process and ensure that the pipe-climbing robot 701 can smoothly pass through this obstacle section;

[0079] And during the passing process, it triggers the opening of the valve on the outer wall of the delivery pipe connecting the central pipe 706 and the cavity plate 704, and outputs the lubricant inside the cavity plate 704 from the nozzles 708 on the two side branches 707. The two nozzles 708 are arranged in an inclined and symmetrical manner. Driven by the reverse output forces on both sides where the lubricant is ejected, the central pipe 706 makes a rotational movement, driving the lubricant to rotate and spray on the outer wall of the welded part, reducing the friction between the connecting pipe 3 and the part to be welded, thereby reducing friction and improving the smoothness of the stretching process of the connecting pipe 3. The setting of the sealing plug 710 can seal the lubricant inside the cavity plate 704 and facilitate the subsequent addition of the lubricant.

[0080] The above describes the embodiments of the present invention, but these embodiments are not limited to the above specific implementation manners. The above specific implementation manners are merely illustrative and not restrictive. Under the inspiration of this embodiment, those of ordinary skill in the art can also make many forms, all of which fall within the protection scope of this embodiment.

Claims

1. A welding device, characterized in that: include: The trolley (1), the induction heating device (2), the connecting pipe (3) and the welding gun (4) are convenient for adjusting the welding position of the entire welding device; A winding protection module (5), a disassembly pretreatment module (6) and a path guide module (7), wherein the winding protection module (5) adjusts the release length of the connecting tube (3) corresponding to the position of the welding part to prevent stacking, the disassembly pretreatment module (6) performs anti-oxidation treatment on the connection interface between the connecting tube (3) and the induction heating device (2) to reduce blockage, and the path guide module (7) processes the obstacle points in the moving path of the connecting tube (3) to reduce friction; The winding protection module (5) is provided with an electric winding drum (502) rotatably connected to the induction heating device (2), and a rotary encoder (503) is installed at the end of the rotating shaft of the electric winding drum (502) to record the number of rotations of the electric winding drum (502).

2. A welding device according to claim 1, characterized in that: The winding protection module (5) comprises: An acceleration sensor (501) is fixedly installed at the bottom of a cart (1); the top of the induction heating device (2) is fixedly connected to a protective shell (504); an observation window (505) is provided in the middle of the rear side of the protective shell (504); the top of the induction heating device (2) is located inside the protective shell (504) and is fixedly connected to a bottom frame (506); the inside of the bottom frame (506) is fixedly connected to an electric telescopic rod (507); the telescopic rod end of the electric telescopic rod (507) is fixedly connected to a special-shaped seat (508); the special-shaped seat (508) is slidably connected to the inner wall of the bottom frame (506) and a plurality of track shifting posts (509) are fixedly connected to the top.

3. A welding device according to claim 2, characterized in that: A half-toothed gear (510) is rotatably connected to the top of the induction heating device (2), the half-toothed gear (510) is meshingly connected to each track shifting column (509), a touch piece (511) is fixedly connected to the middle of both sides of the half-toothed gear (510), and a marking plate (512) is fixedly connected to the top of the half-toothed gear (510).

4. A welding device according to claim 1, characterized in that: The disassembly and replacement pre-processing module (6) comprises: A main bevel gear (601) is fixedly connected to the bottom of the half-tooth gear (510); a secondary bevel gear (602) is rotatably connected to the top of the induction heating device (2); the secondary bevel gear (602) and the main bevel gear (601) are meshed and connected; a pair of pulleys (603) are rotatably connected to the middle of the rear side of the induction heating device (2); the pulleys (603) on both sides are connected by a connecting belt (604); and the upper pulley (603) is fixedly connected to the secondary bevel gear (602).

5. A welding device according to claim 4, characterized in that: An eccentric rod (605) is fixedly connected to the middle of the edge side of the pulley (603) on the lower side, a guide frame (606) is fixedly connected to the rear side of the induction heating device (2), connecting plates (607) are slidably connected to the middle of both sides of the guide frame (606), and the top ends of the connecting plates (607) on both sides are fixedly connected to arc frames (608), the outer wall of the eccentric rod (605) is slidably connected to the inner wall of the arc frame (608), and the bottom ends of the connecting plates (607) on both sides are fixedly connected to spray pipes (609), and a plurality of atomizing nozzles (610) are fixedly connected around the inner wall of the spray pipe (609), and the spraying direction of the atomizing nozzle (610) is directly facing the connection interface between the connecting pipe (3) and the induction heating device (2).

6. A welding device according to claim 5, characterized in that: Two groups of liquid tanks (611) are fixedly connected to the induction heating equipment (2), and the bottoms of the liquid tanks (611) on both sides are fixedly connected with three-way hoses (612). One end of the three-way hose (612) away from the liquid tanks (611) on both sides is fixedly penetrated into the interior of the spray pipe (609). The outer walls of both ends of the three-way hose (612) close to the liquid tanks (611) on both sides are fixedly connected with electromagnetic valves (613). The middle part of the cart (1) is located directly below the spray pipe (609) and is clamped with a receiving frame (614).

7. A welding device according to claim 1, characterized in that: The path guidance module (7) comprises: A pipe-climbing robot (701), wherein the pipe-climbing robot (701) is sleeved on the outer wall of a connecting pipe (3), a plurality of infrared obstacle avoidance probes (702) are arranged around one side of the pipe-climbing robot (701) close to a welding gun (4), a plurality of electric push rods (703) are connected to the pipe-climbing robot (701) in rotation, a plurality of cavity plates (704) are arranged at the end of the pipe-climbing robot (701) in rotation, the electric push rods (703) are rotatably connected to the cavity plates (704) through two groups of shaft seats, and compensation springs (709) are sleeved on the outer wall of the electric push rods (703), and the two ends of the compensation springs (709) are fixedly connected to the shaft seats on both sides.

8. A welding device according to claim 7, characterized in that: The inner side surface of the cavity plate (704) is fixedly connected with a plurality of rubber strips (705); the middle part of the side of the cavity plate (704) away from the pipe-climbing robot (701) is rotatably connected with a central tube (706); the middle parts of both sides of the central tube (706) are fixedly connected with branch tubes (707); the middle parts of the branch tubes (707) on both sides are fixedly connected with a plurality of nozzles (708); the spraying angles of the nozzles (708) on both sides are symmetrically inclined; and the middle part of the cavity plate (704) is clamped with a sealing plug (710).

9. A welding device according to claim 8, characterized in that: A control module (8) is fixedly mounted on the outer wall of the induction heating device (2), and the control module (8) is electrically connected to an acceleration sensor (501), an electric winding drum (502), a rotary encoder (503), an electric telescopic rod (507), a solenoid valve (613), a pipe-climbing robot (701), an infrared obstacle avoidance probe (702), and an electric push rod (703).

10. A welding method, applied to a welding device according to claims 1-9, characterized in that: The following steps are involved: Step 1: According to the location of the weldment, the cart (1) is pushed to the corresponding area, and the welding gun (4) is removed from the cart (1), and the electric reel (502) is adjusted to rotate and release the connecting tube (3) of the corresponding length according to the welding position of the weldment to reduce cross stacking; Step 2: When the path that the welding gun (4) moves during the welding process in step 1 is relatively complex, the pipe-climbing robot (701) moves along the outer wall of the released connecting pipe (3). When an obstacle point appears between the pipe and the workpiece to be welded, the pipe at the blocking point is lifted up in a direction away from the workpiece to be welded by the path guiding module (7), so that the pipe-climbing robot (701) can pass smoothly, and in the process of passing, a lubricant is sprayed on the outer wall of the workpiece to be welded; Step 3: After welding is completed, the connecting tube (3) is rewound and stored in the middle of the electric reel (502) in accordance with step 1, and the welding gun (4) is hung to its original position.

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