A special welding machine for ultra-thick aluminum alloy metal arc welding

Abstract

The invention relates to the technical field of welding, and specifically discloses a special welding machine for ultra-thick aluminum alloy metal-electrode gas shielded welding, comprising a base; a movable vehicle body is arranged on the base; a column is installed on the top surface of the vehicle body; a support rod is fixedly connected to the top of the column; a welding wire reel is rotatably connected to the outer wall of one end of the support rod; a support plate is fixedly connected to the end of the support rod away from the welding wire reel; a welding gun body is installed on the bottom surface of the support plate, and a wire feeding mechanism capable of conveying welding wire into the welding gun body is arranged on the side wall of the support plate; a sensor control mechanism capable of detecting and controlling the working state of the welding gun body is arranged on the welding gun body; the wire is automatically fed through the wire feeding mechanism so that the welding gun body can perform welding work, thereby improving work efficiency, and the welding parameters are adjusted in real time through the arranged sensor control mechanism to improve welding quality.

Description

Technical Field

[0001] The invention relates to the technical field of welding, in particular to a special welding machine for ultra-thick aluminum alloy metal-electrode gas shielded welding. Background Art

[0002] Aluminum alloys are widely used in the industrial field due to their excellent physical properties. Currently, the mainstream welding processes for aluminum alloys are argon arc welding and semi-automatic metal arc welding. However, when facing medium-thick and ultra-thick aluminum alloy plates above 8mm, multiple welding processes are usually required to achieve complete fusion, which not only affects production efficiency, but also increases the complexity of quality control.

[0003] In the prior art, argon arc welding requires the welder to feed the wire with one hand and operate the welding gun with the other hand, and the welding speed is slow. Although manual semi-automatic gas shielded welding has achieved automatic wire feeding, it still requires manual operation of the welding gun, which has high requirements on the welder's skills. The welding process is highly dependent on the human skill level, which directly affects the stability and pass rate of welding quality. Summary of the invention

[0004] The present application provides a special welding machine for ultra-thick aluminum alloy metal arc welding, which reduces the degree of dependence on human skill level during the welding process and improves welding quality and welding efficiency.

[0005] The present application provides a special welding machine for ultra-thick aluminum alloy metal arc welding, which adopts the following technical solution:

[0006] A special welding machine for ultra-thick aluminum alloy metal-electrode gas shielded welding, comprising a base; a vehicle body movable along the length direction of the base is arranged on the base; a column is vertically installed on the top surface of the vehicle body; a support rod is horizontally fixedly connected to the top of the column; a welding wire reel is rotatably connected to the outer wall of one end of the support rod; welding wire is wound on the welding wire reel; a support plate is fixedly connected to the end of the support rod away from the welding wire reel; a welding gun body is installed on the bottom surface of the support plate, and a wire feeding mechanism capable of conveying the welding wire into the welding gun body is arranged on the side wall of the support plate; a sensor control mechanism capable of detecting and controlling the working state of the welding gun body is arranged on the welding gun body.

[0007] By adopting the above technical solution, the welding wire wound on the welding wire reel is drawn out and transported into the welding gun body after passing through the wire feeding mechanism. When the mobile vehicle body is used to weld the aluminum alloy plate, the wire feeding mechanism automatically transports the welding wire into the welding gun body, and the plate is welded through the welding gun body. When the welding gun body is welding, the sensor control mechanism detects and controls the working state of the welding gun body, and adjusts the welding parameters in real time to maintain the stability of the welding process and the consistency of the weld quality, thereby reducing the dependence on the human skill level during the welding process and improving the welding quality and welding efficiency.

[0008] Preferably, a wire inlet is provided on the top wall of the support plate, and a wire outlet is provided on the bottom wall of the support plate; the wire feeding mechanism includes a driving wheel and a driven wheel; the driving wheel is rotatably connected to the side wall of the support plate; the driven wheel is rotatably connected to the side wall of the support plate, the driven wheel and the driving wheel are coaxial and located on the same side of the support plate; the outer circumferential surface of the driving wheel cooperates with the outer circumferential surface of the driven wheel to form a wire inlet channel for the welding wire to pass through; the wire inlet, the wire inlet channel and the wire outlet are located on the same axis; a first motor is installed on the side wall of the support plate away from the driving wheel; the output shaft of the first motor is coaxially fixed to the driving wheel.

[0009] By adopting the above technical solution, the output end of the welding wire wound on the welding wire reel is transported into the welding gun body after passing through the wire inlet, the wire inlet channel and the wire outlet in sequence. When the welding gun body welds the aluminum alloy plate, the second motor is started to drive the driving wheel to rotate. During the rotation of the driving wheel, the friction force causes the welding wire to move into the welding gun body, thereby realizing automatic wire feeding during welding.

[0010] Preferably, the sensing control mechanism includes a temperature sensor, a pressure sensor and a control box; the temperature sensor is installed on the welding gun body, and the temperature sensor can detect the temperature change of the welding gun body; the pressure sensor is installed on the welding gun body, and the pressure sensor can detect the pressure change of the molten pool of the welding gun body; the control box is installed on the outer side wall of the support rod, and the control box is provided with a first controller and a second controller; the temperature sensor is electrically connected to the first controller; the first controller is electrically connected to the welding gun body, and the first controller controls the current of the welding gun body; the pressure sensor is electrically connected to the second controller; the second controller is electrically connected to the first motor, and the second controller controls the speed of the first motor.

[0011] By adopting the above technical solution, during the welding process of the welding gun body, the temperature sensor and the pressure sensor can detect the temperature changes of the welding gun body and the changes in the molten pool pressure in real time during the welding process, and feed back the detected data to the first controller and the second controller. The current of the welding gun body is then controlled by the first controller, and the second controller controls the speed of the first motor to adjust the wire feeding speed, thereby realizing real-time adjustment of welding parameters and maintaining the stability of the welding process and the consistency of weld quality.

[0012] Preferably, a plurality of straightening wheels are rotatably connected to the side wall of the support plate away from the first motor; the plurality of straightening wheels are located on the top of the driving wheel and the driven wheel, the plurality of straightening wheels are arranged in an interlaced manner along the vertical direction, and the outer peripheral surfaces of the plurality of straightening wheels cooperate to form a straightening channel for the welding wire to pass through; the straightening channel is coaxial with the wire feeding channel.

[0013] By adopting the above technical solution, before the wire feeding mechanism automatically feeds the welding wire into the welding gun body, the welding wire will pass through a straightening channel formed by a plurality of straightening wheels. The welding wire will be straightened when passing through the straightening channel, prompting the welding wire looped on the wire reel to be adjusted back to a straight state, so that the welding wire can achieve the required straightness when entering the welding gun body, thereby improving the efficiency of the welding operation and the product quality.

[0014] Preferably, a material blocking rod is fixedly connected to the side wall of the column; and a through hole for the welding wire to pass through is opened on the side wall of the material blocking rod close to the top end.

[0015] By adopting the above technical scheme, after the welding wire on the wire reel is drawn out, the welding wire is first passed through the opening on the material blocking rod and then transported to the straightening channel and the wire feeding channel. The material blocking rod supports and guides the transported welding wire, reduces the possibility of deviation of the welding wire during transportation, has a restraining effect on the transportation path of the welding wire, and reduces the difficulty of welding wire transportation.

[0016] Preferably, the bottom surface of the support plate is fixedly connected to an air hood located on one side of the welding gun body through a connecting rod; the opening of the air hood is arranged toward the bottom of the welding gun body; the top surface of the vehicle body is fixedly connected to a box body; the top surface of the box body is provided with a pump body; the input end of the pump body is fixedly connected to an air inlet pipe connected to the opening of the air hood, and the output end of the pump body is fixedly connected to an air outlet pipe connected to the inside of the box body; a processing component capable of purifying welding fumes is provided in the box body.

[0017] By adopting the above technical solution, when the welding gun body is welding the aluminum alloy plate, the pump body is started to generate negative pressure at the open position of the hood. The smoke generated during the welding process is sucked into the hood driven by the airflow, and the smoke is transported to the box through the air inlet and outlet pipes. The smoke is purified by the processing components arranged in the box, thereby reducing the possibility of smoke directly escaping to the external environment and causing pollution, thereby protecting the health of on-site workers.

[0018] Preferably, the processing component includes a filter and an activated carbon plate; the filter is installed on the inner wall of the box; the activated carbon plate is installed on the side wall of the box, and the activated carbon plate is located on the side of the filter away from the air outlet pipe; the box is provided with an air outlet on the side wall of the activated carbon plate away from the filter.

[0019] By adopting the above technical solution, when the pump body transports the fume generated during the welding process into the box, the filter screen filters the fume to remove dust impurities in the fume, and the activated carbon plate adsorbs harmful substances mixed in the fume. The treated fume is then discharged into the external environment through the outlet, thereby reducing the possibility of harm to the health of workers after inhaling the fume.

[0020] Preferably, a pair of racks are fixedly connected to the top surface of the base; the pair of racks are arranged along the length direction of the base, and the two racks are respectively located on the top surface of the base near the two side walls; a pair of rotating shafts arranged along the width direction of the base are rotatably connected to the inner wall of the body; both ends of the pair of rotating shafts are coaxially fixed with a first spur gear located outside the body and meshing with the racks; a second motor is installed on the outer wall of the body; a driving shaft coaxially fixed to the output end of the second motor is coaxially connected to the rotating shaft; a first sprocket is coaxially fixed to the outer wall of the driving shaft; a second sprocket is coaxially fixed to the outer wall of the pair of rotating shafts; the first sprocket and the pair of second sprockets are coaxially fixed to the outer walls; the same chain is sleeved on the outside of the first sprocket and the pair of second sprockets; the chain links the first sprocket and the pair of second sprockets.

[0021] By adopting the above technical solution, when welding the aluminum alloy plate, the second motor is started to drive the drive shaft and the first sprocket to rotate. Under the cooperation of the first sprocket, a pair of second sprockets and the chain, the drive shaft drives the two rotating shafts to rotate. During the rotation of the rotating shaft, the meshing cooperation of the first spur gear and the rack enables the vehicle body to move along the length direction of the rack, so that the welding gun body can weld the aluminum alloy plate along the direction of the weld.

[0022] Preferably, the top surface of the vehicle body is rotatably connected to a support column; an electric push rod is vertically installed on the top surface of the support column; the column is fixedly connected to the output end of the electric push rod; a third motor is installed on the top surface of the base; a second spur gear is coaxially fixedly connected to the output shaft of the third motor; a gear ring meshing with the second spur gear is coaxially fixedly connected to the outer wall of the support column.

[0023] By adopting the above technical solution, when the height of the welding gun body needs to be adjusted when welding aluminum alloy plates of different thicknesses, the height of the welding gun body can be adjusted by starting the electric push rod to drive the column and the support rod to rise and fall. When the welding position needs to be adjusted, the third motor is started to drive the second spur gear to rotate. Under the meshing cooperation of the second spur gear and the ring gear, the third motor drives the support column to rotate, prompting the support rod to drive the welding gun body to rotate to change the position of the welding gun body, so that the welding gun body can perform welding work at different positions.

[0024] Preferably, a limit plate arranged along the length direction of the rack is fixedly connected to the top surface of the base; the vehicle body is provided with limit grooves on both side walls along the length direction of the rack; the limit plate passes through the two limit grooves, and the limit plate slides in cooperation with the inner side wall of the limit groove.

[0025] By adopting the above technical solution, when the vehicle body moves along the length direction of the base, the vehicle body is limited and guided through the cooperation between the limit plate and the inner wall of the limit groove, thereby reducing the possibility of the vehicle body deviating and falling during movement and improving the stability of the vehicle body during movement.

[0026] In summary, this application has the following beneficial effects:

[0027] 1. When welding aluminum alloy plates on a mobile vehicle, the wire feeding mechanism automatically delivers the welding wire to the welding gun body, and welds the plates through the welding gun body. When the welding gun body is welding, the sensor control mechanism detects and controls the working state of the welding gun body, and adjusts the welding parameters in real time to maintain the stability of the welding process and the consistency of the weld quality, thereby reducing the dependence on human skills during the welding process and improving the welding quality and efficiency;

[0028] 2. Before the wire feeding mechanism automatically delivers the welding wire to the welding gun body, the welding wire will pass through a straightening channel formed by a plurality of straightening wheels. The welding wire will be straightened when passing through the straightening channel, so that the looped welding wire can be adjusted back to a straight state, so that the welding wire can achieve the required straightness when entering the welding gun body, thereby improving the efficiency of welding operations and product quality;

[0029] 3. During the welding process, the pump body is started to transport the fume generated during the welding process into the box, and the fume is filtered through the filter net installed in the box to remove dust impurities in the fume. The activated carbon plate adsorbs harmful substances mixed in the fume. The treated fume is then discharged through the outlet, thereby reducing the possibility of the fume escaping directly into the environment and causing pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural diagram of a special welding machine for ultra-thick aluminum alloy metal arc welding;

[0031] Figure 2 is a cross-sectional schematic diagram of the hopper and its internal structure in the present application;

[0032] Figure 3 It is a schematic diagram of the structure of the second rotating shaft, the hopper, the arc plate and the cam in the present application;

[0033] Figure 4 It is a schematic diagram of the cross-sectional structure of the fixing block and the T-shaped plate in the present application;

[0034] Figure 5 It is a schematic diagram of the cross-sectional structure of the mounting block and the magnetic plate in this application.

[0035] Description of the accompanying drawings: 1. base; 11. rack; 12. limit plate; 2. body; 21. rotating shaft; 211. second sprocket; 22. first spur gear; 23. second motor; 24. driving shaft; 241. first sprocket; 25. chain; 26. support column; 261. gear ring; 27. electric push rod; 28. third motor; 281. second spur gear; 29. ​​limit groove; 3. column; 31. support rod; 32. wire reel; 33. material stop rod; 331. through port; 4. support plate; 41 , wire inlet; 42, wire outlet; 43, straightening wheel; 44, air hood; 5, welding gun body; 6, wire feeding mechanism; 61, driving wheel; 62, driven wheel; 63, first motor; 7, sensing control mechanism; 71, temperature sensor; 72, pressure sensor; 73, control box; 74, first controller; 75, second controller; 8, box body; 81, pump body; 811, air inlet pipe; 812, air outlet pipe; 82, processing component; 821, filter screen; 822, activated carbon plate; 83, air outlet. DETAILED DESCRIPTION

[0036] The present invention will be further described in detail below with reference to the accompanying drawings. The same components are denoted by the same reference numerals. It should be noted that the terms "front", "rear", "left", "right", "upper", "lower", "bottom" and "top" used in the following description refer to directions in the accompanying drawings, and the terms "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0037] The present invention discloses a special welding machine for ultra-thick aluminum alloy metal arc welding, such as Figure 1 , Figure 2 and Figure 3 As shown, it includes a base 1, a vehicle body 2, a column 3, a support rod 31, a welding gun body 5 and a wire feeding mechanism 6. The vehicle body 2 is arranged on the top surface of the base 1, and the vehicle body 2 can move along the length direction of the base 1. The column 3 is vertically installed on the top surface of the vehicle body 2. The support rod 31 horizontally penetrates the column 3 and is fixedly connected to the top of the column 3. A welding wire reel 32 is rotatably connected to the outer wall of one end of the support rod 31, and an end of the support rod 31 away from the welding wire reel 32 is fixedly connected to a support plate 4. A wire inlet 41 is vertically opened on the top wall of the support plate 4, and a wire outlet 42 located on the same axis as the wire inlet 41 is vertically opened on the bottom wall of the support plate 4; the welding gun body 5 is installed on the bottom surface of the support plate 4 at a position corresponding to the wire outlet 42, and the wire feeding mechanism 6 is arranged on the support plate 4. The wire feeding mechanism 6 can automatically transport the welding wire wound on the wire reel 32 to the welding gun body 5.

[0038] The welding wire on the welding wire reel 32 is drawn out so that its output end passes through the wire inlet 41, the wire feeding mechanism 6, and the wire outlet 42 in sequence and is then transported to the welding gun body 5. When the mobile body 2 is used to weld the aluminum alloy plate, the wire feeding mechanism 6 automatically transports the welding wire to the welding gun body 5 so that the welding gun body 5 can perform welding work on the plate.

[0039] like Figure 2 and Figure 3 As shown, the wire feeding mechanism 6 includes a driving wheel 61, a driven wheel 62 and a first motor 63. The driving wheel 61 is rotatably connected to the outer side wall of the support plate 4, and the driven wheel 62 is rotatably connected to the outer side wall of the support plate 4 close to the driving wheel 61. The rotation centers of the driving wheel 61 and the driven wheel 62 are located on the same horizontal plane. The outer peripheral surfaces of the driving wheel 61 and the driving wheel are both concave arc surfaces that can cooperate with the outer wall of the welding wire. The outer peripheral surfaces of the driving wheel 61 and the driven wheel 62 cooperate to form a wire feed channel for the welding wire to pass vertically. The wire inlet 41, the wire feed channel and the wire outlet 42 are located on the same axis. The first motor 63 is installed on the outer side wall of the support plate 4 away from the driving wheel 61, and the output shaft of the first motor 63 is coaxially fixed to the driving wheel 61.

[0040] The output end of the welding wire wound on the welding wire reel 32 is transported to the welding gun body 5 after passing through the wire inlet 41, the wire inlet channel and the wire outlet 42 in sequence. When the welding gun body 5 welds the aluminum alloy plate, the second motor 23 is started to drive the driving wheel 61 to rotate. During the rotation of the driving wheel 61, the friction force causes the welding wire to move into the welding gun body 5, thereby realizing automatic wire feeding during welding.

[0041] like Figure 1 , Figure 2 and Figure 3 As shown, three straightening wheels 43 located at the top of the driving wheel 61 and the driven wheel 62 are rotatably connected on the side wall of the support plate 4 away from the first motor 63. The three straightening wheels 43 are arranged alternately at intervals in the vertical direction. The outer peripheral surfaces of the three straightening wheels 43 are concave arc surfaces that can cooperate with the outer wall of the welding wire. The outer peripheral surfaces of the three straightening wheels 43 cooperate to form a straightening channel for the welding wire to pass vertically. The straightening channel is coaxial with the wire feeding channel. A material stopping rod 33 is fixedly connected to the outer wall of the column 3. The side wall of the material stopping rod 33 near the top is provided with a through hole 331 that horizontally passes through the column 3 and allows the welding wire to pass through the material stopping rod 33.

[0042] Before feeding the welding wire into the wire feeding channel, the output end of the welding wire needs to pass through the straightening channel formed by the through hole on the stop rod 33 and the straightening wheel 43. The welding wire will be straightened when passing through the straightening channel, so that the circled welding wire is adjusted back to a straight state. The stop rod 33 supports and guides the transported welding wire and has a restraining effect on the transport path of the welding wire, thereby reducing the possibility of deviation of the welding wire during the transport process, so as to transport the welding wire into the straightening channel.

[0043] like Figure 1 , Figure 2 and Figure 3 As shown, the welding gun body 5 is also provided with a sensor control mechanism 7 that can detect and control the working state of the welding gun body 5. The sensor control mechanism 7 includes a temperature sensor 71, a pressure sensor 72, a control box 73, a first controller 74 and a second controller 75. The temperature sensor 71 is installed on the welding gun body 5 to detect the temperature change of the welding gun body 5, and the pressure sensor 72 is installed on the welding gun body 5 to detect the pressure change of the molten pool of the welding gun body 5. The control box 73 is fixed to the outer wall of the support rod 31, and the first controller 74 is installed on the inner wall of the control box 73; the output end of the temperature sensor 71 is electrically connected to the first controller 74, and the output end of the first controller 74 is electrically connected to the welding gun body 5. The first controller 74 can control the current of the welding gun body 5; the second controller 75 is installed on the inner wall of the control box 73, the output end of the pressure sensor 72 is electrically connected to the second controller 75, and the output end of the second controller 75 is electrically connected to the first motor 63, and the second controller 75 can control the speed of the first motor 63.

[0044] When the welding gun body 5 is welding, the temperature sensor 71 and the pressure sensor 72 detect the temperature change of the welding gun body 5 and the pressure change of the molten pool in real time and feed back the detected data to the first controller 74 and the second controller 75. The first controller 74 controls the current of the welding gun body 5 according to the feedback data, and the second controller 75 controls the rotation speed of the first motor 63 according to the feedback data to adjust the wire feeding speed, thereby realizing real-time adjustment of welding parameters and maintaining the stability of the welding process and the consistency of weld quality.

[0045] like Figure 1 and Figure 4As shown, a pair of racks 11 arranged along the length direction of the base 1 are fixedly connected to the top surface of the base 1, and the two racks 11 are respectively located on the top surface of the base 1 near the two side walls. A pair of rotating shafts 21 arranged along the width direction of the base 1 are rotatably connected on the inner side wall of the vehicle body 2. Both ends of the two rotating shafts 21 extend to the outside of the vehicle body 2. Both ends of the two rotating shafts 21 extending outside the vehicle body 2 are coaxially fixed with a first spur gear 22. The first spur gears 22 located at both ends of the two rotating shafts 21 are respectively meshed with the two racks 11. A second motor 23 is installed on the outer side wall of the vehicle body 2. The output end of the second motor 23 is coaxially fixed and extends into the vehicle body 2 coaxially with the rotating shaft 21 The driving shaft 24 has a first sprocket 241 coaxially fixedly connected to the outer wall of the driving shaft 24, and second sprockets 211 are coaxially fixedly connected to the outer walls of the two rotating shafts 21. The first sprocket 241 and the two second sprockets 211 are sleeved with the same chain 25, and the chain 25 links the first sprocket 241 and the two second sprockets 211. The top surface of the base 1 is fixedly connected to a limit plate 12 arranged along the length direction of the rack 11, and the body 2 has limit grooves 29 on both side walls along the length direction of the rack 11. The limit plate 12 passes through the two limit grooves 29 along the length direction of the rack 11, and the limit plate 12 slides with the inner wall of the limit groove 29.

[0046] During the welding process, the second motor 23 is started to drive the drive shaft 24 and the first sprocket 241 to rotate. Under the cooperation of the first sprocket 241, a pair of second sprockets 211 and the chain 25, the drive shaft 24 drives the two rotating shafts 21 to rotate. During the rotation of the rotating shaft 21, the meshing cooperation of the first spur gear 22 and the rack 11 enables the vehicle body 2 to move along the length direction of the rack 11, so that the welding gun body 5 can weld the aluminum alloy plate along the direction of the weld.

[0047] like Figure 1 and Figure 2 As shown, the top surface of the vehicle body 2 is rotatably connected to a support column 26, the top surface of the support column 26 is vertically mounted with an electric push rod 27, the column 3 is fixedly connected to the output end of the electric push rod 27, a gear ring 261 is coaxially fixedly connected to the outer wall of the support column 26, and a third motor 28 located on one side of the column 3 is vertically mounted on the top surface of the base 1. The third motor 28 is a brake motor, and a second spur gear 281 meshing with the gear ring 261 is coaxially fixedly connected to the output shaft of the third motor 28.

[0048] By starting the electric push rod 27, the column 3 and the support rod 31 are driven to rise and fall so as to adjust the height of the welding gun body 5. When the welding position needs to be adjusted, the third motor 28 is started to drive the second spur gear 281 to rotate. Under the meshing cooperation between the second spur gear 281 and the ring gear 261, the support column 26 rotates, prompting the support rod 31 to drive the welding gun body 5 to rotate to change the position of the welding gun body 5.

[0049] like Figure 1 and Figure 5As shown, the bottom surface of the support plate 4 is fixedly connected to an inclined induced draft hood 44 located on one side of the welding gun body 5 through a connecting rod, and the open end of the induced draft hood 44 is inclined downward toward the bottom of the welding gun body 5. The top surface of the vehicle body 2 is fixedly connected to a box body 8, and a pump body 81 is installed on the top surface of the box body 8. The input end of the pump body 81 is fixedly connected to an air inlet pipe 811, and the end of the air inlet pipe 811 away from the pump body 81 is fixedly connected to the inner side wall of the induced draft hood 44 and communicated with the open end of the induced draft hood 44. The output end of the pump body 81 is fixedly connected to an air outlet pipe 812, and the air outlet pipe 812 is away from the pump body 81. The end is fixedly connected to the side wall of the box 8 and communicated with the interior of the box 8. A processing component 82 capable of purifying welding fume is arranged in the box 8. The processing component 82 includes a filter 821 and an activated carbon plate 822. The filter 821 is vertically installed on the inner wall of the box 8. The activated carbon plate 822 is vertically installed on the inner wall of the box 8. The activated carbon plate 822 is located on the side of the filter 821 away from the outlet pipe 812. An outlet 83 communicating with the external environment is opened on the side wall of the box 8 on the side of the activated carbon plate 822 away from the filter 821.

[0050] During the welding process of aluminum alloy plates, the pump body 81 is started to suck the smoke generated during the welding process into the box body 8. The filter net 821 arranged in the box body 8 filters the smoke to remove dust impurities in the smoke. The activated carbon plate 822 adsorbs harmful substances mixed in the smoke. The treated smoke is then discharged through the outlet 83, reducing the possibility of the welding smoke directly escaping into the external environment.

[0051] Working principle: after the welding wire on the welding wire reel 32 is drawn out, it first passes through the opening 331 on the material blocking rod 33, and then the output end of the welding wire passes through the wire inlet 41, the straightening channel, the wire inlet channel and the wire outlet 42 in sequence and is then transported to the welding gun body 5. When the vehicle body 2 is moved and the aluminum alloy plate is welded through the welding gun body 5, the second motor 23 is started to drive the driving wheel 61 to rotate. During the rotation of the driving wheel 61, the friction force causes the welding wire to be continuously transported to the welding gun body 5, so as to realize automatic wire feeding during welding; when the welding wire is automatically transported, the welding wire will pass through the straightening channel. When the welding wire passes through the straightening channel, the straightening wheel 43 straightens the welding wire, so that the circled welding wire is adjusted back to a straight state, so that the welding wire can reach the required straightness when entering the welding gun body 5, thereby improving the efficiency and quality of the welding operation;

[0052] When the welding gun body 5 is performing welding, the temperature sensor 71 and the pressure sensor 72 provided on the welding gun body 5 detect the temperature change of the welding gun body 5 and the pressure change of the molten pool in real time, and feed back the detected data to the first controller 74 and the second controller 75. The first controller 74 controls the current of the welding gun body 5 according to the received data, and the second controller 75 controls the rotation speed of the first motor 63 according to the received data to adjust the wire feeding speed, thereby achieving real-time adjustment of welding parameters and maintaining the stability of the welding process and the consistency of the weld quality.

[0053] During the welding process of aluminum alloy plates, the pump body 81 is started to generate negative pressure at the open position of the hood 44. The smoke generated during the welding process is sucked into the hood 44 driven by the airflow and transported to the box 8. The filter screen 821 arranged in the box 8 filters the smoke to remove dust impurities in the smoke. The activated carbon plate 822 adsorbs harmful substances mixed in the smoke. The treated smoke is then discharged into the external environment through the outlet 83, thereby reducing the possibility of smoke directly escaping into the external environment and causing pollution, thereby protecting the health of on-site workers.

[0054] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A special welding machine for ultra-thick aluminum alloy metal arc welding, characterized by: The invention comprises a base (1); a vehicle body (2) movable along the length direction of the base (1) is arranged on the base (1); a column (3) is vertically installed on the top surface of the vehicle body (2); a support rod (31) is horizontally fixedly connected to the top of the column (3); a welding wire reel (32) is rotatably connected to the outer wall of one end of the support rod (31); a welding wire is wound on the welding wire reel (32); a support plate (4) is fixedly connected to the end of the support rod (31) away from the welding wire reel (32); a welding gun body (5) is installed on the bottom surface of the support plate (4), and a wire feeding mechanism (6) capable of conveying the welding wire into the welding gun body (5) is arranged on the side wall of the support plate (4); a sensor control mechanism (7) capable of detecting and controlling the working state of the welding gun body (5) is also arranged on the welding gun body (5); The top wall of the support plate (4) is provided with a wire inlet (41), and the bottom wall of the support plate (4) is provided with a wire outlet (42); the wire feeding mechanism (6) comprises a driving wheel (61) and a driven wheel (62); the driving wheel (61) is rotatably connected to the side wall of the support plate (4); the driven wheel (62) is rotatably connected to the side wall of the support plate (4), and the driven wheel (62) is coaxial with the driving wheel (61) and is located on the same side of the support plate (4); the outer circumferential surface of the driving wheel (61) cooperates with the outer circumferential surface of the driven wheel (62) to form a wire inlet channel for the welding wire to pass through; the wire inlet (41), the wire inlet channel and the wire outlet (42) are located on the same axis; a first motor (63) is installed on the side wall of the support plate (4) away from the driving wheel (61); the output shaft of the first motor (63) is coaxially fixed to the driving wheel (61); The sensing control mechanism (7) comprises a temperature sensor (71), a pressure sensor (72) and a control box (73); the temperature sensor (71) is mounted on the welding gun body (5), and the temperature sensor (71) can detect the temperature change of the welding gun body (5); the pressure sensor (72) is mounted on the welding gun body (5), and the pressure sensor (72) can detect the pressure change of the molten pool of the welding gun body (5); the control box (73) is mounted on the outer wall of the support rod (31), and a first controller (74) and a second controller (75) are arranged in the control box (73); the temperature sensor (71) is electrically connected to the first controller (74); the first controller (74) is electrically connected to the welding gun body (5), and the first controller (74) controls the current of the welding gun body (5); the pressure sensor (72) is electrically connected to the second controller (75); the second controller (75) is electrically connected to the first motor (63), and the second controller (75) controls the rotation speed of the first motor (63).

2. The ultra-thick aluminum alloy metal arc welding machine according to claim 1, characterized in that: A plurality of straightening wheels (43) are rotatably connected to the side wall of the support plate (4) away from the first motor (63); the plurality of straightening wheels (43) are located on the top of the driving wheel (61) and the driven wheel (62); the plurality of straightening wheels (43) are arranged in an interlaced manner in the vertical direction; the outer peripheral surfaces of the plurality of straightening wheels (43) cooperate to form a straightening channel for the welding wire to pass through; the straightening channel is coaxial with the wire feeding channel.

3. The ultra-thick aluminum alloy metal arc welding machine according to claim 1, characterized in that: A material blocking rod (33) is fixedly connected to the side wall of the upright column (3); a through hole (331) for the welding wire to pass through is provided on the side wall of the material blocking rod (33) near the top end.

4. The ultra-thick aluminum alloy metal arc welding machine according to claim 1, characterized in that: The bottom surface of the support plate (4) is fixedly connected to an air hood (44) located on one side of the welding gun body (5) via a connecting rod; the air hood (44) is open and arranged toward the bottom of the welding gun body (5); the top surface of the vehicle body (2) is fixedly connected to a box body (8); the top surface of the box body (8) is provided with a pump body (81); the input end of the pump body (81) is fixedly connected to an air inlet pipe (811) connected to the open end of the air hood (44), and the output end of the pump body (81) is fixedly connected to an air outlet pipe (812) connected to the inside of the box body (8); and a processing component (82) capable of purifying welding fumes is arranged in the box body (8).

5. The ultra-thick aluminum alloy metal arc welding machine according to claim 4, characterized in that: The processing assembly (82) comprises a filter screen (821) and an activated carbon plate (822); the filter screen (821) is mounted on the inner side wall of the box body (8); the activated carbon plate (822) is mounted on the side wall of the box body (8), and the activated carbon plate (822) is located on a side of the filter screen (821) away from the air outlet pipe (812); and an air outlet (83) is provided on the side wall of the box body (8) on a side of the activated carbon plate (822) away from the filter screen (821).

6. The ultra-thick aluminum alloy metal arc welding machine according to claim 1, characterized in that: A pair of racks (11) are fixedly connected to the top surface of the base (1); the pair of racks (11) are arranged along the length direction of the base (1), and the two racks (11) are respectively located on the top surface of the base (1) near the two side walls; a pair of rotating shafts (21) arranged along the width direction of the base (1) are rotatably connected to the inner side wall of the vehicle body (2); both ends of the pair of rotating shafts (21) are coaxially fixedly connected to a first spur gear (22) located outside the vehicle body (2) and meshing with the racks (11); a second electric The motor (23) comprises a first motor (23); a driving shaft (24) coaxially fixedly connected to the output end of the second motor (23) and coaxial with the rotating shaft (21); a first sprocket (241) is coaxially fixedly connected to the outer wall of the driving shaft (24); a pair of second sprockets (211) are coaxially fixedly connected to the outer walls of the rotating shaft (21); the first sprocket (241) and the pair of second sprockets (211) are externally sleeved with a same chain (25); the chain (25) enables the first sprocket (241) and the pair of second sprockets (211) to move in a linked manner.

7. The ultra-thick aluminum alloy metal arc welding machine according to claim 1, characterized in that: The top surface of the vehicle body (2) is rotatably connected to a support column (26); an electric push rod (27) is vertically mounted on the top surface of the support column (26); the column (3) is fixedly connected to the output end of the electric push rod (27); a third motor (28) is mounted on the top surface of the base (1); a second spur gear (281) is coaxially fixedly connected to the output shaft of the third motor (28); and a gear ring (261) meshing with the second spur gear (281) is coaxially fixedly connected to the outer wall of the support column (26).

8. The ultra-thick aluminum alloy metal arc welding machine according to claim 1, characterized in that: The top surface of the base (1) is fixedly connected with a limit plate (12) arranged along the length direction of the rack (11); the vehicle body (2) is provided with limit grooves (29) on two side walls along the length direction of the rack (11); the limit plate (12) passes through the two limit grooves (29), and the limit plate (12) is slidably matched with the inner side wall of the limit groove (29).

Images