Automatic circular seam welding device for air cylinder for automobile

Abstract

The invention relates to the technical field of air cylinder welding, in particular to an automobile air cylinder automatic circular seam welding device which comprises a tunnel shell, clamping mechanisms are slidably connected to the inner wall of the tunnel shell, a traction mechanism is fixedly connected to the bottom of each clamping mechanism, and a welding head is fixedly connected to the inner wall of the tunnel shell. The outer wall of the welding head is in sliding connection with the inner wall of the clamping mechanism. In the production process of the automobile air cylinder, it is very important to position the crack position to prevent air leakage, and in the prior art, positioning equipment is lacked, or the positioning equipment needs to be additionally provided with a motor, so that the energy consumption is increased, and the production cost is reduced. And if a crack is not accurately positioned during welding, the air cylinder cannot be completely sealed due to inclined welding, so that the quality detection cannot be passed, the temperature in the equipment is continuously increased during the operation of the equipment or during welding, and if a cooling device is not arranged, internal elements are possibly damaged, so that the welding quality and efficiency are influenced.

Description

Technical Field

[0001] The invention relates to the technical field of gas cylinder welding, in particular to an automatic circumferential seam welding device for a gas cylinder used in a vehicle. Background Art

[0002] The air cylinder is a gas storage device in the automobile braking system. It is often used to store the gas compressed by the air compressor (air pump) and is used in automobile braking, whistle and other systems. In the production process of automobile air cylinders, the research and implementation of welding technology is a very critical link. After welding, it needs to be immersed in water to observe whether there is any leakage.

[0003] Considering that it is very important to prevent air leakage during the production process of automobile gas cylinders, the existing technology lacks positioning equipment, or the positioning equipment requires an additional motor, which will lead to increased energy consumption. If the seam is not accurately positioned during welding, the weld may be crooked, resulting in the gas cylinder being unable to be completely sealed and thus failing to pass the quality inspection. During equipment operation or welding, the temperature inside the equipment will continue to rise. If there is no cooling device, internal components may be damaged, thereby affecting the welding quality and efficiency. Summary of the invention

[0004] The object of the present invention is to provide an automatic circumferential seam welding device for automobile gas cylinders to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention is an automatic circumferential seam welding device for automobile gas storage cylinders, comprising a tunnel shell, the inner wall of which is slidably connected to a clamping mechanism, the bottom of each group of the clamping mechanisms is fixedly connected to a traction mechanism, the inner wall of the tunnel shell is fixedly connected to a welding head, and the outer wall of the welding head is slidably connected to the inner wall of the clamping mechanism; The clamping mechanism comprises a heat dissipation water tank, the outer wall of the heat dissipation water tank is slidably connected to the inner wall of the tunnel shell, the inner wall of the heat dissipation water tank is slidably connected to a clamping block, the top of the heat dissipation water tank is fixedly connected to a water injection check valve, the inner wall of the water injection check valve is slidably connected to a water injection block, the outer wall of the water injection block is fixedly connected to the inner wall of the tunnel shell, one end of the heat dissipation water tank is fixedly connected to a drainage check valve, the top of the water injection block is fixedly connected to a cooling water tank, the bottom of the cooling water tank is fixedly connected to a drainage block, and the outer wall of the drainage block is slidably connected to the inner wall of the drainage check valve; The traction mechanism includes a connecting block, and there are two groups of connecting blocks. The top of each group of connecting blocks is fixedly connected to the bottom of the heat dissipation water tank, and the adjacent end of each group of connecting blocks is fixedly connected to a traction block. The inner wall of the traction block is rotatably connected to a traction gear, and one end of the traction gear is fixedly connected to a reciprocating screw rod. The inner wall of the traction block is rotatably connected to a screw rod traction piece, and one end of the screw rod traction piece is slidably connected to the outer wall of the reciprocating screw rod. One end of the traction gear is meshed with a driving gear, and a driving motor is provided on one side of the driving gear, and the output end of the driving motor is fixedly connected to the inner wall of the driving gear.

[0006] By adopting the above technical scheme, water is injected into the radiator water tank, and the driving motor is started to rotate the driving gear, and the traction gear is rotated through meshing. When the traction gear rotates, it will drive the reciprocating screw to rotate coaxially. When the reciprocating screw rotates, the travel force will be transmitted to the traction block through the screw traction piece. When the reciprocating screw rotates and the screw traction piece moves to the bottom, it will move in the opposite direction. At the same time, the movement of the traction block will drive the connecting block to move. At this time, the effect of reciprocating motion is completed. When the connecting block moves, it will drive the radiator water tank to move. When the radiator water tank moves and the water injection check valve contacts the water injection block, the water inside the cooling water tank will flow into the water injection check valve through the water delivery pipe inside the water injection block and enter the inside of the radiator water tank. At this time, the increase of water inside the radiator water tank will increase its internal water pressure, and the pressure on the clamping block at the bottom of the radiator water tank will also increase. When the heat dissipation tank moves and the drainage check valve contacts the drainage block, the water inside the heat dissipation tank is squeezed into the drainage block due to the high water pressure inside the heat dissipation tank, and enters the cooling water tank through the drainage pipe inside the drainage block. After cooling in the cooling water tank, the water is recycled, and the density of water is reduced due to thermal expansion, and it floats above the cold water. At this time, only hot water will be extracted when the water is pumped out. When the equipment is running and the welding head is welding, the heat dissipation tank can absorb heat, evaporate the internal water, increase the internal air pressure, and make the internal water push the clamping block to move outward to achieve the effect of auxiliary fixation, cool the welding head, and prevent the welding head from being damaged due to heat accumulation due to long-term work, so that it can work longer.

[0007] Furthermore, the driving gear is meshed with a positioning gear, the outer wall of the positioning gear is transmission connected to a power transmission belt, the inner wall of the power transmission belt is transmission connected to a positioning shaft, and there are two groups of positioning shafts, one group of the outer walls of the positioning shafts is transmission connected to a transmission belt, and the other group of the outer walls of the positioning shafts are transmission connected to the inner wall of the transmission belt, the inner wall of the tunnel shell is provided with a rotating groove, and the inner wall of the rotating groove is rotationally connected to the outer wall of the positioning shaft.

[0008] By adopting the above technical solution, when the driving gear rotates, it will drive the drainage block to rotate, and the power transmission belt will transmit power to the positioning shaft. When the positioning shaft rotates, it will drive the transmission belt at the other end, and the transmission belt will transmit power to another set of positioning shafts. The rotation directions of the two sets of positioning shafts are the same. In this way, the air cylinder can be rotated after being placed in to achieve automatic positioning.

[0009] Furthermore, a positioning block is fixedly connected to the inner wall of the tunnel shell, a positioning plate is fixedly connected to one side of the positioning block, and a top of the positioning plate is fixedly connected to the inner wall of the tunnel shell.

[0010] By adopting the above technical solution, when the air cylinder enters the interior of the tunnel shell, it is necessary to first make the gap of the air cylinder contact with the positioning block and move the air cylinder inward. When the air cylinder is clamped by the clamping block, the gap will further shrink and contact with the surface of the positioning plate. If necessary, sandpaper can be set on the surface of the positioning plate to avoid loose welding caused by uneven gap of the air cylinder. When the air cylinder is separated from the positioning plate, the clamping pressure will cause the gap to be completely closed, and the welding head will weld the gap of the air cylinder.

[0011] Furthermore, the inner wall of the tunnel shell is fixedly connected with support blocks, and there are multiple groups of support blocks.

[0012] By adopting the above technical solution, when the gas cylinder enters the tunnel shell or is clamped by the clamping block, the support block will support the gas cylinder. The support block at the tail can be removed and replaced with a downward slanted slide. After welding is completed, the clamping block will release the clamp and fall due to the imbalance of the center of gravity. At this time, the material can be discharged after welding.

[0013] Furthermore, a central control panel is fixedly connected to the outer wall of the tunnel shell, an emergency stop button is fixedly connected to the outer wall of the tunnel shell, and a start button is fixedly connected to the outer wall of the tunnel shell.

[0014] By adopting the above technical solution, the interactivity can be improved through the setting of the central control screen, and the speed, welding temperature and other settings can be changed at any time. By setting the emergency stop button and the start button, the emergency stop button can be pressed to immediately cut off the power of the machine and close the welding head when the equipment fails or an accident occurs. After waiting for the problem to be resolved, the start button can be pressed to continue running.

[0015] Furthermore, the outer wall of the clamping block is designed to be beveled.

[0016] By adopting the above technical solution, when the air cylinder contacts the bevel of the clamping block, the clamping block will be squeezed into the interior of the heat sink, and then the outer wall of the air cylinder will be clamped to adapt to air cylinders of different sizes.

[0017] Furthermore, the inner wall of the water injection one-way valve is slidably connected to a water inlet baffle, the inner wall of the water inlet baffle is slidably connected to the inner wall of the water injection one-way valve, and the inner wall of the water injection one-way valve is provided with a water inlet hole, and the inner wall of the drainage one-way valve is slidably connected to a water outlet baffle, the inner wall of the water outlet baffle is slidably connected to the inner wall of the drainage one-way valve, and the inner wall of the drainage one-way valve is provided with a water outlet hole.

[0018] By adopting the above technical scheme, when the heat dissipation water tank moves, the water injection block will enter the interior of the water injection one-way valve, and the water injection block will squeeze the water inlet baffle inward, and the hole of the water inlet baffle will align with the water inlet hole, at this time, water can be injected into the heat dissipation water tank and the internal water pressure will be increased; when the heat dissipation water tank moves, the drainage block will enter the interior of the drainage one-way valve, and the drainage block will squeeze the water outlet baffle, at this time, the hole of the water outlet baffle and the water outlet are aligned, and the hot water and hot air can be discharged through the internal water pressure and air pressure.

[0019] Furthermore, the outer wall of each group of the positioning shafts is provided with threads, and the directions of the threads in each group are the same.

[0020] By adopting the above technical solution, when the positioning shaft rotates, the air cylinder will be driven to rotate. Through the setting of the threaded strip, the air cylinder can move forward while the air cylinder rotates. When the gap of the air cylinder rotates to the positioning block, it provides thrust to enable the air cylinder to enter the interior of the tunnel shell and perform welding.

[0021] The present invention has the following beneficial effects: The present invention increases the internal water pressure by injecting water into the heat dissipation water tank, so that the clamping block is pushed out to clamp the air storage cylinder, and the water is recycled after being discharged and cooled through the cooling water tank. Since the water expands due to heat, its density will be reduced, and it will float above the cold water. At this time, only hot water will be extracted by extracting the water. When the equipment is running and the welding head is welding, the heat dissipation water tank can absorb heat, evaporate the internal water, increase the internal air pressure, and make the internal water push the clamping block to move outward to achieve the effect of auxiliary fixation, cool the welding head, and prevent the welding head from being damaged due to heat accumulation due to long-term work, so that it can work for a longer time.

[0022] .In the present invention, when the driving gear rotates, it will drive the drainage block to rotate, and the power transmission belt will transmit power to the positioning shaft. When the positioning shaft rotates, it will drive the transmission belt at the other end, and the transmission belt will transmit power to another set of positioning shafts, and the rotation directions of the two sets of positioning shafts are the same. When the positioning shaft rotates, it will drive the air cylinder to rotate. Through the setting of the threaded strip, the air cylinder can move forward while the air cylinder rotates, so as to achieve automatic positioning. When the gap of the air cylinder rotates to the positioning block, it provides thrust to enable the air cylinder to enter the interior of the tunnel shell and weld.

[0023] . According to the present invention, when the gas cylinder enters the interior of the tunnel shell, it is necessary to first make the gap of the gas cylinder contact with the positioning block and move the gas cylinder inward. When the gas cylinder is clamped by the clamping block, the gap will further shrink and contact with the surface of the positioning plate. If necessary, sandpaper can be set on the surface of the positioning plate to avoid loose welding caused by the uneven gap of the gas cylinder. When the gas cylinder is separated from the positioning plate, the clamping pressure will cause the gap to be completely closed, and the welding head will weld the gap of the gas cylinder at the same time; when the gas cylinder enters the interior of the tunnel shell or is clamped by the clamping block, the support block will support the gas cylinder, and the support block at the tail can be removed and replaced with a slide with an inclined downward mouth. After welding is completed, the clamping block will release the clamping and will fall due to the imbalance of the center of gravity. At this time, the discharge after welding can be completed.

[0024] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall back structure of the present invention; Figure 3 It is a schematic cross-sectional view of the whole of the present invention; Figure 4 It is a structural schematic diagram of the clamping mechanism and the traction mechanism of the present invention; Figure 5 It is a cross-sectional schematic diagram of the clamping mechanism and the traction mechanism of the present invention; Figure 6 For the present invention Figure 3 A partial enlarged schematic diagram in the middle; Figure 7 For the present invention Figure 3 A partial enlarged schematic diagram of point B in the middle; Figure 8 For the present invention Figure 3 A partial enlarged schematic diagram of point C.

[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows: In the figure: 1. Tunnel shell; 11. Welding head; 12. Positioning plate; 13. Support block; 14. Central control panel; 15. Emergency stop button; 16. Start button; 2. Clamping mechanism; 21. Radiator tank; 22. Clamping block; 23. Water injection check valve; 24. Water injection block; 25. Drainage check valve; 26. Cooling water tank; 27. Drainage block; 3. Traction mechanism; 31. Connecting block; 32. Traction block; 33. Traction gear; 34. Reciprocating screw; 35. Screw traction piece; 36. Driving motor; 37. Positioning gear; 38. Positioning shaft. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-Figure 8 As shown, the present invention is an automatic girth welding device for automobile gas storage cylinders, comprising a tunnel shell 1, the inner wall of the tunnel shell 1 is slidably connected with a clamping mechanism 2, the bottom of each group of clamping mechanisms 2 is fixedly connected with a traction mechanism 3, the inner wall of the tunnel shell 1 is fixedly connected with a welding head 11, and the outer wall of the welding head 11 is slidably connected with the inner wall of the clamping mechanism 2; The clamping mechanism 2 includes a heat dissipation water tank 21, the outer wall of the heat dissipation water tank 21 is slidably connected to the inner wall of the tunnel shell 1, the inner wall of the heat dissipation water tank 21 is slidably connected to a clamping block 22, the top of the heat dissipation water tank 21 is fixedly connected to a water injection check valve 23, the inner wall of the water injection check valve 23 is slidably connected to a water injection block 24, the outer wall of the water injection block 24 is fixedly connected to the inner wall of the tunnel shell 1, one end of the heat dissipation water tank 21 is fixedly connected to a drainage check valve 25, the top of the water injection block 24 is fixedly connected to a cooling water tank 26, the bottom of the cooling water tank 26 is fixedly connected to a drainage block 27, and the outer wall of the drainage block 27 is slidably connected to the inner wall of the drainage check valve 25; The traction mechanism 3 includes a connecting block 31, and there are two groups of connecting blocks 31. The top of each group of connecting blocks 31 is fixedly connected to the bottom of the heat dissipation water tank 21, and the adjacent end of each group of connecting blocks 31 is fixedly connected to a traction block 32. The inner wall of the traction block 32 is rotatably connected to a traction gear 33, and one end of the traction gear 33 is fixedly connected to a reciprocating screw 34. The inner wall of the traction block 32 is rotatably connected to a screw traction piece 35, and one end of the screw traction piece 35 is slidably connected to the outer wall of the reciprocating screw 34. One end of the traction gear 33 is meshed with a driving gear, and a driving motor 36 is provided on one side of the driving gear, and the output end of the driving motor 36 is fixedly connected to the inner wall of the driving gear.

[0030] When the traction gear 33 is engaged, the reciprocating screw 34 is driven to rotate coaxially. When the reciprocating screw 34 rotates, the travel force is transmitted to the traction block 32 through the screw traction piece 35. When the reciprocating screw 34 rotates and the screw traction piece 35 moves to the bottom, the screw traction piece 35 moves in the opposite direction. At the same time, the movement of the traction block 32 drives the connecting block 31 to move. At this time, the reciprocating motion effect is completed. When the connecting block 31 moves, the radiating water tank 21 is driven to move. When the radiating water tank 21 moves and the water injection check valve 23 contacts the water injection block 24, the water inside the cooling water tank 26 flows into the water injection check valve 23 through the water delivery pipe inside the water injection block 24 and enters the radiating water tank 21. At this time, the water inside the radiating water tank 21 increases, which increases the internal water pressure of the radiating water tank 21, and the clamping block 22 at the bottom of the radiating water tank 21 is pressed. 2 will also be subjected to increased pressure, at which time the clamping block 22 will be forced to move outward and clamp the air cylinder; when the heat dissipation water tank 21 moves to make the drainage check valve 25 contact the drainage block 27, due to the high water pressure inside the heat dissipation water tank 21, the water inside the heat dissipation water tank 21 will be squeezed into the drainage block 27, and enter the cooling water tank 26 through the drainage pipe inside the drainage block 27. After cooling in the cooling water tank 26, the water will be recycled, and the water will be reduced in density due to thermal expansion, and will float above the cold water. At this time, only hot water will be extracted when the water is extracted; when the equipment is running and the welding head 11 is welding, the heat dissipation water tank 21 can absorb heat, evaporate the internal water, increase the internal air pressure, and make the internal water push the clamping block 22 to move outward to achieve the effect of auxiliary fixation, cool the welding head 11, and prevent the welding head 11 from being damaged due to heat accumulation due to long-term work, so that it can work for a longer time.

[0031] Specifically, the driving gear is meshed with a positioning gear 37, the outer wall of the positioning gear 37 is transmission-connected with a power transmission belt, the inner wall of the power transmission belt is transmission-connected with a positioning shaft 38, and there are two groups of positioning shafts 38, one group of positioning shafts 38 has an outer wall transmission-connected with a transmission belt, and the other group of positioning shafts 38 has an outer wall transmission-connected with the inner wall of the transmission belt, a rotating through groove is provided on the inner wall of the tunnel shell 1, and the inner wall of the rotating through groove is rotationally connected with the outer wall of the positioning shaft 38.

[0032] In this embodiment, when the driving gear rotates, it will drive the drainage block 27 to rotate, and the power transmission belt will transmit power to the positioning shaft 38. When the positioning shaft 38 rotates, it will drive the transmission belt at the other end, and the transmission belt will transmit power to another set of positioning shafts 38, and the rotation directions of the two sets of positioning shafts 38 are the same. In this way, the air cylinder can be rotated after being placed in order to achieve automatic positioning.

[0033] Specifically, a positioning block is fixedly connected to the inner wall of the tunnel shell 1 , a positioning plate 12 is fixedly connected to one side of the positioning block, and a top of the positioning plate 12 is fixedly connected to the inner wall of the tunnel shell 1 .

[0034] In this embodiment, when the gas cylinder enters the interior of the tunnel shell 1, it is necessary to first make the gap of the gas cylinder contact with the positioning block and move the gas cylinder inward. When the gas cylinder is clamped by the clamping block 22, the gap will further shrink and contact with the surface of the positioning plate 12. If necessary, sandpaper can be set on the surface of the positioning plate 12 to avoid loose welding caused by uneven gap of the gas cylinder. When the gas cylinder is separated from the positioning plate 12, the clamping pressure will cause the gap to be completely closed, and at the same time, the welding head 11 will weld the gap of the gas cylinder.

[0035] Specifically, the inner wall of the tunnel shell 1 is fixedly connected with support blocks 13, and there are multiple groups of support blocks 13.

[0036] In this embodiment, when the gas cylinder enters the tunnel shell 1 or is clamped by the clamping block 22, the support block 13 will support the gas cylinder. The support block 13 at the tail can be removed and replaced with a downward slanted slide. After welding is completed, the clamping block 22 will release the clamping and will fall due to the imbalance of the center of gravity. At this time, the material can be discharged after welding.

[0037] Specifically, a central control panel 14 is fixedly connected to the outer wall of the tunnel shell 1 , an emergency stop button 15 is fixedly connected to the outer wall of the tunnel shell 1 , and a start button 16 is fixedly connected to the outer wall of the tunnel shell 1 .

[0038] In this embodiment, the interactivity can be improved by setting the central control screen 14, and the speed, welding temperature and other settings can be changed at any time. By setting the emergency stop button 15 and the start button 16, when a device failure or accident occurs, the emergency stop button 15 can be pressed to immediately cut off the power of the machine and close the welding head 11. After waiting for the problem to be resolved, the start button 16 can be pressed to continue operation.

[0039] Specifically, the outer wall of the clamping block 22 is designed to be beveled.

[0040] In this embodiment, when the gas cylinder contacts the bevel of the clamping block 22, the clamping block 22 will be squeezed into the interior of the heat dissipation water tank 21, and then the outer wall of the gas cylinder will be clamped to adapt to gas cylinders of different sizes.

[0041] Specifically, the inner wall of the water injection one-way valve 23 is slidably connected with a water inlet baffle, the inner wall of the water inlet baffle is slidably connected to the inner wall of the water injection one-way valve 23, and the inner wall of the water injection one-way valve 23 is provided with a water inlet hole, the inner wall of the drainage one-way valve 25 is slidably connected with a water outlet baffle, the inner wall of the water outlet baffle is slidably connected to the inner wall of the drainage one-way valve 25, and the inner wall of the drainage one-way valve 25 is provided with a water outlet hole.

[0042] In this embodiment, when the heat dissipation water tank 21 moves, the water injection block 24 will enter the interior of the water injection check valve 23, and the water injection block 24 will squeeze the water inlet baffle inward, and the hole of the water inlet baffle will align with the water inlet hole. At this time, water can be injected into the heat dissipation water tank 21 and the internal water pressure can be increased; when the heat dissipation water tank 21 moves, the drainage block 27 will enter the interior of the drainage check valve 25, and the drainage block 27 will squeeze the water outlet baffle. At this time, the hole of the water outlet baffle and the water outlet are aligned, and the hot water and hot air can be discharged through the internal water pressure and air pressure.

[0043] Specifically, the outer wall of each group of positioning shafts 38 is provided with threads, and the direction of each group of threads is the same.

[0044] In this embodiment, when the positioning shaft 38 rotates, it will drive the gas cylinder to rotate. Through the setting of the threaded strip, the gas cylinder can move forward while the gas cylinder rotates. When the gap of the gas cylinder rotates to the positioning block, it provides thrust to enable the gas cylinder to enter the interior of the tunnel shell 1 and perform welding.

[0045] When in use, first, when the gas cylinder enters the interior of the tunnel shell 1, it is necessary to first contact the gap of the gas cylinder with the positioning block and move the gas cylinder inward. When the gas cylinder is clamped by the clamping block 22, the gap will be further contracted and contact the surface of the positioning plate 12. If necessary, sandpaper can be set on the surface of the positioning plate 12 to avoid the uneven gap of the gas cylinder causing the welding to be weak. When the driving gear rotates, it will drive the drainage block 27 to rotate, and the power transmission belt will transmit power to the positioning shaft 38, and the positioning shaft 38 will rotate. When it rotates, it will drive the transmission belt at the other end, and the transmission belt will transmit power to another set of positioning shafts 38, and the rotation directions of the two sets of positioning shafts 38 are the same, so that the air cylinder is placed in and rotated. When the positioning shaft 38 rotates, it will drive the air cylinder to rotate. Through the setting of the threaded strip, the air cylinder can move forward while the air cylinder rotates, so as to achieve automatic positioning. When the air cylinder is separated from the positioning plate 12, the clamping pressure will cause the gap to be completely closed, and at the same time, the welding head 11 will weld the gap of the air cylinder.

[0046] Secondly, water is poured into the heat dissipation water tank 21, and the driving motor 36 is started to rotate the driving gear, and the traction gear 33 is rotated by meshing. When the traction gear 33 rotates, the reciprocating screw 34 is driven to rotate coaxially. When the reciprocating screw 34 rotates, the travel force is transmitted to the traction block 32 through the screw traction piece 35. When the reciprocating screw 34 rotates to make the screw traction piece 35 move to the bottom, the screw traction piece 35 moves in the opposite direction. At the same time, the movement of the traction block 32 drives the connecting block 31 to move, and the reciprocating motion is completed. When the connecting block 31 moves, the cooling water tank 21 is driven to move. When the cooling water tank 21 moves and the water injection check valve 23 contacts the water injection block 24, the water inside the cooling water tank 26 flows into the water injection check valve 23 through the water delivery pipe inside the water injection block 24 and enters the cooling water tank 21. At this time, the water inside the cooling water tank 21 increases, which increases the internal water pressure and increases the pressure on the clamping block 22 at the bottom of the cooling water tank 21. At this time, the clamping block 22 is forced to move outward and press the air reservoir. When the air cylinder contacts the bevel of the clamping block 22, the clamping block 22 will be squeezed into the interior of the heat sink 21, and the outer wall of the air cylinder will be clamped later to adapt to air cylinders of different sizes; when the heat sink 21 moves to make the drainage check valve 25 contact the drainage block 27, due to the high water pressure inside the heat sink 21, the water inside the heat sink 21 will be squeezed into the interior of the drainage block 27, and enter the interior of the cooling water tank 26 through the drainage pipe inside the drainage block 27, and then after cooling in the cooling water tank 26, the water inside the cooling water tank 21 will be squeezed out. Water is recycled, and as water expands due to heat, its density decreases, and it floats above the cold water. At this time, pumping out the water will only pump out hot water. When the equipment is running and the welding head 11 is welding, the heat dissipation water tank 21 can absorb heat, evaporate the internal water, increase the internal air pressure, and make the internal water push the clamping block 22 to move outward to achieve the effect of auxiliary fixation, cool down the welding head 11, and prevent the welding head 11 from being damaged due to heat accumulation due to long-term work, so that it can work for a longer time.

[0047] Finally, when the gas cylinder enters the tunnel shell 1 or is clamped by the clamping block 22, the support block 13 will support the gas cylinder. The support block 13 at the tail can be removed and replaced with a downward slanted slide. After welding is completed, the clamping block 22 will release the clamping and will fall due to the imbalance of the center of gravity. At this time, the material can be discharged after welding.

[0048] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An automatic girth welding device for an automobile gas cylinder, comprising a tunnel shell (1), characterized in that: The inner wall of the tunnel shell (1) is slidably connected to a clamping mechanism (2), the bottom of each group of the clamping mechanisms (2) is fixedly connected to a traction mechanism (3), the inner wall of the tunnel shell (1) is fixedly connected to a welding head (11), and the outer wall of the welding head (11) is slidably connected to the inner wall of the clamping mechanism (2); The clamping mechanism (2) comprises a heat dissipation water tank (21), the outer wall of the heat dissipation water tank (21) is slidably connected to the inner wall of the tunnel shell (1), the inner wall of the heat dissipation water tank (21) is slidably connected to a clamping block (22), the top of the heat dissipation water tank (21) is fixedly connected to a water injection check valve (23), the inner wall of the water injection check valve (23) is slidably connected to a water injection block (24), the outer wall of the water injection block (24) is fixedly connected to the inner wall of the tunnel shell (1), one end of the heat dissipation water tank (21) is fixedly connected to a drainage check valve (25), the top of the water injection block (24) is fixedly connected to a cooling water tank (26), the bottom of the cooling water tank (26) is fixedly connected to a drainage block (27), the outer wall of the drainage block (27) is slidably connected to the inner wall of the drainage check valve (25); The traction mechanism (3) comprises a connecting block (31), and the connecting blocks (31) have two groups. The top of each group of the connecting blocks (31) is fixedly connected to the bottom of the heat dissipation water tank (21), and the adjacent end of each group of the connecting blocks (31) is fixedly connected to a traction block (32). The inner wall of the traction block (32) is rotatably connected to a traction gear (33), one end of the traction gear (33) is fixedly connected to a reciprocating screw (34), the inner wall of the traction block (32) is rotatably connected to a screw traction piece (35), one end of the screw traction piece (35) is slidably connected to the outer wall of the reciprocating screw (34), one end of the traction gear (33) is meshed with a driving gear, and a driving motor (36) is provided on one side of the driving gear, and the output end of the driving motor (36) is fixedly connected to the inner wall of the driving gear.

2. The automatic girth welding device for automobile gas cylinder according to claim 1, characterized in that: The driving gear is meshed with a positioning gear (37), the outer wall of the positioning gear (37) is transmission-connected with a power transmission belt, the inner wall of the power transmission belt is transmission-connected with a positioning shaft (38), and there are two groups of positioning shafts (38), one group of which has an outer wall of the positioning shafts (38) transmission-connected with a transmission belt, and the other group of which has an outer wall of the positioning shafts (38) transmission-connected with an inner wall of the transmission belt, and an inner wall of the tunnel shell (1) is provided with a rotating through groove, and the inner wall of the rotating through groove is rotationally connected with the outer wall of the positioning shaft (38).

3. The automatic girth welding device for automobile gas cylinder according to claim 1, characterized in that: A positioning block is fixedly connected to the inner wall of the tunnel shell (1), a positioning plate (12) is fixedly connected to one side of the positioning block, and the top of the positioning plate (12) is fixedly connected to the inner wall of the tunnel shell (1).

4. The automatic girth welding device for automobile gas cylinder according to claim 1, characterized in that: The inner wall of the tunnel shell (1) is fixedly connected with a support block (13), and there are multiple groups of support blocks (13).

5. The automatic girth welding device for automobile gas cylinder according to claim 1, characterized in that: The outer wall of the tunnel shell (1) is fixedly connected to a central control panel (14), the outer wall of the tunnel shell (1) is fixedly connected to an emergency stop button (15), and the outer wall of the tunnel shell (1) is fixedly connected to a start button (16).

6. The automatic girth welding device for automobile gas cylinder according to claim 1, characterized in that: The outer wall of the clamping block (22) is designed with an oblique angle.

7. The automatic girth welding device for automobile gas cylinder according to claim 1, characterized in that: The inner wall of the water injection check valve (23) is slidably connected to a water inlet baffle, the inner wall of the water inlet baffle is slidably connected to the inner wall of the water injection check valve (23), and the inner wall of the water injection check valve (23) is provided with a water inlet hole, the inner wall of the water discharge check valve (25) is slidably connected to a water outlet baffle, the inner wall of the water outlet baffle is slidably connected to the inner wall of the water discharge check valve (25), and the inner wall of the water discharge check valve (25) is provided with a water outlet hole.

8. The automatic girth welding device for automobile gas cylinder according to claim 2, characterized in that: The outer wall of each group of the positioning shafts (38) is provided with threads, and the directions of the threads in each group are the same.

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