Welding equipment and welding method

Abstract

The present invention relates to the field of welding processing technology, in particular to welding equipment and a welding method thereof. The present invention drives a first frame plate or a first rotating drum to rise or fall synchronously by turning on a first hydraulic rod to extend or contract its output, and drives another two groups of second frame plates and second rotating drums to move synchronously under the cooperation of structures such as a first rack, a first long rotating column, a first transmission gear, and a second long rotating column, so that the first rotating drum and the second rotating drum are synchronously moved close to or away from the middle side, and the positions are adjusted so as to place pipes with different outer diameters. In the process of processing pipes with different outer diameters, it is not necessary to use placement racks of different sizes. At the same time, in the process of welding processing, the first motor is turned on to drive the horizontal transmission column and the rotating column to rotate, and under the action of a sleeve, the first rotating drum can be rotated to rotate the placed pipe, so that the welding device body can perform a circle of welding processing on the part where the pipe is connected.

Description

Technical Field

[0001] The invention relates to the technical field of welding processing, in particular to welding equipment and a welding method thereof. Background Art

[0002] Metal pipes are tubular objects made of metal materials, usually used to transport liquids, gases, solid particles and other substances. There are many materials for metal pipes, the most common of which is stainless steel. For example, the standard DN500 pipe diameter is a stainless steel pipe with an inner diameter of 500mm and an outer diameter of 508mm or 530mm, while DN400 and DN300 are also stainless steel pipes with different inner diameters. In the process of stainless steel pipe processing, sometimes in order to lengthen the pipe, it is necessary to weld the pipe, butt-weld the short pipe with the long pipe, and increase the length of the long pipe.

[0003] In the process of welding metal pipes, a metal rack with an arc design is needed to prevent the pipes from rolling. A handheld welding gun is used to weld the joints in a circle, and then polish and remove scars. However, the outer diameters of metal pipes are different. For example, in the last welding process, the two pipes connected are both about 500mm in outer diameter, so a slightly larger rack is needed. The next welding process requires processing of pipes with an outer diameter of about 300mm, so a slightly smaller rack is needed. Different sizes of pipes require different racks, so that a variety of different sizes can be placed on the processing site. The rack squeezes the working space, and since the pipe itself is difficult to rotate in the rack, it is inconvenient to hold the welding gun in a circle for welding. At the same time, after welding, there will be weld scars on the inside and outside of the pipe welding part. For the sake of beauty and the smoothness of the internal pipe, it is necessary to grind and remove the scars on the inside and outside. The staff holds a small grinder inside the pipe to grind and remove the scars, and the debris generated is easy to fall on the body of the staff. In addition, the inside of the pipe is narrow and it is not convenient to carry out work. After grinding, the debris dropped inside needs to be cleaned, which further increases the workload. Summary of the invention

[0004] The purpose of the present invention is to provide welding equipment and a welding method thereof, which can be adjusted synchronously to adapt to metal pipes of different outer diameters, without the need to use a variety of racks of different sizes, and can use circulating air to cool the pipe after grinding to achieve rapid cooling, and simultaneously perform internal and external grinding, which is more efficient and does not require staff to enter the interior of the pipe for grinding. Finally, the circulating air can also be used to clean up the debris generated by internal grinding.

[0005] To achieve the above object, the present invention provides the following technical solution: a welding device, comprising a base, a support frame and a welding device body, and further comprising:

[0006] A first hydraulic rod bolted to the top of the base, wherein the output shaft of the first hydraulic rod is bolted to a first frame plate, the inner side of the first frame plate is rotatably connected to a first rotating drum, and the top of the base is also bolted to an arc-shaped bracket;

[0007] A fixing rod bolted to both sides of the top of the base, the other end of the fixing rod is bolted to a sliding sleeve, a second frame plate is arranged above the base and on both sides of the first frame plate, a second rotating drum is rotatably connected to the inner side of the second frame plate, two places on one side of the second frame plate are bolted to movable columns, and the movable columns are slidably connected to the inner wall of the sliding sleeve;

[0008] A synchronous adjustment mechanism for moving the first rotating drum and the second rotating drums on both sides, and a driving mechanism is also provided on the top of the base;

[0009] An external grinding mechanism for externally grinding the pipe connection portion;

[0010] The infusion mechanism used in conjunction with the external polishing mechanism, the top of the base and the two sides of the support frame are respectively bolted with a liquid storage tank and a box body;

[0011] A refrigeration and air blowing mechanism that blows out cold air to cool down the pipe being welded;

[0012] An air return mechanism used in conjunction with the refrigeration and air blowing mechanism to recover debris;

[0013] Internal grinding mechanism for grinding the inside of the pipe being welded.

[0014] Preferably, the refrigeration and blowing mechanism includes a powerful fan, a second hose, a track and a refrigeration assembly, the inlet end of the powerful fan is communicated with the box through a pipe, one end of the second hose is communicated with the outlet end of the powerful fan, the number of the tracks is two groups and they are bolted to the top of the base, the refrigeration and blowing mechanism also includes a movable seat, the top of the movable seat is bolted with a ventilation pipe in an L-shaped design, and the other end of the second hose is communicated with the ventilation pipe, the bottom of the movable seat is rotatably connected to a rotating shaft, and both ends of the rotating shaft are bolted with walking wheels, and the walking wheels are rollingly connected to the surface of the track, the bottom of the movable seat is also bolted with a second motor, and the output shaft of the second motor is connected to the rotating shaft through a belt drive.

[0015] Preferably, the refrigeration assembly includes an insulation box bolted to the top of the box body, a frame is bolted inside the insulation box, a semiconductor refrigeration plate is fixed on the surface of the frame, and a first heat-conducting column and a second heat-conducting column are bolted to the upper and lower sides of the frame respectively.

[0016] Preferably, the synchronous adjustment mechanism includes a first rack, a first long rotating column and a second long rotating column, the second long rotating column is in two groups and respectively located on both sides of the first long rotating column, the first long rotating column and the second long rotating column are both rotatably connected to the arc bracket, and the first long rotating column is respectively connected to the second long rotating columns on both sides through a timing belt drive, the first rack and the first frame plate are bolted to each other, a first transmission gear meshing with the first rack is fixed on the surface of the first long rotating column, a second transmission gear is fixed on the surface of the second long rotating column, a second rack is bolted to one side of the second frame plate, and the second rack and the second transmission gear mesh with each other.

[0017] Preferably, the driving mechanism includes a first motor, a vertical plate and a rotating column, the first motor and the vertical plate are bolted to the top of the base, the vertical plates are in two groups and are respectively located on both sides of the first motor, the rotating column is rotatably connected to the surface of the vertical plate, the surface of the vertical plate is also rotatably connected to a horizontal transmission column, the rotating columns are in two groups, the output shaft of the first motor is connected to the horizontal transmission column through a gear transmission, and the two sides of the horizontal transmission column are respectively connected to the rotating column through a bevel gear transmission, the driving mechanism also includes a lifting plate bolted to one side of the first frame plate, both sides of the surface of the lifting plate are rotatably connected to sleeves, and the sleeve is connected to the first rotating drum through a bevel gear transmission, a vertical transmission column is welded to the top of the rotating column, and the vertical transmission column is slidably connected to the inner wall of the sleeve, the cross-section of the vertical transmission column is cross-shaped, and the shape of the inner wall of the sleeve is the same as that of the vertical transmission column.

[0018] Preferably, the external grinding mechanism includes a cover shell, a first transmission shaft shell and a telescopic rotating shaft, the cover shell is bolted to the top of the lifting plate, the first transmission shaft shell is rotatably connected to the bottom of the lifting plate, the first transmission shaft shell is connected to the sleeve through gear transmission, the surface of the telescopic rotating shaft passes through the cover shell and the lifting plate, the telescopic rotating shaft is rotatably connected to the penetration of the cover shell and the lifting plate respectively, the first transmission shaft shell is connected to the telescopic rotating shaft through gear transmission, an electric cylinder is bolted to one side of the inner wall of the cover shell, the output shaft of the electric cylinder is bolted to a connecting plate, and the extended end of the telescopic rotating shaft is rotatably connected to the surface of the connecting plate, and the top of the extended end of the telescopic rotating shaft is bolted to a first grinding piece.

[0019] Preferably, the infusion mechanism includes an infusion pump, a suction tube and a first hose, one end of the suction tube is connected to the liquid storage tank, the other end of the suction tube is connected to the inlet end of the infusion pump, the outlet end of the infusion pump is connected to the first hose, the other end of the first hose is connected to a connecting pipe, the other end of the connecting pipe passes through the interior of the cover shell and is connected to a nozzle.

[0020] Preferably, the return air mechanism includes a fixed bracket, a turntable and a second hydraulic rod, the fixed bracket is bolted to the top of the base, the second hydraulic rod is bolted to the top of the fixed bracket, the return air mechanism also includes an exhaust hood and a long return pipe, cross bars are bolted to both sides of the exhaust hood, and the other end of the cross bar is fixed to the output shaft of the second hydraulic rod, the turntable is rotatably connected to the surface of the exhaust hood, a third hose is connected to one side of the exhaust hood, and the other end of the third hose is connected to the long return pipe, the long return pipe passes through the liquid storage tank and is connected to the box body, a blocking net is provided inside the box body, and a plurality of heat conductive plates are fixed inside the liquid storage tank and on the surface of the long return pipe.

[0021] Preferably, the internal grinding mechanism includes a support plate, a third hydraulic rod and a movable plate, the support plate is bolted to one side of the ventilation pipe, the third hydraulic rod is bolted to the top of the support plate, the movable plate is bolted to the output shaft of the third hydraulic rod, the top of the movable plate is bolted with a vertical plate and a third motor, respectively, the surface of the vertical plate is rotatably connected with a transmission rod, and the output shaft of the third motor is connected to the transmission rod through a belt drive, and a second grinding piece is fixed to one end of the transmission rod.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention drives the first frame plate or the first rotating drum to rise or fall synchronously by turning on the first hydraulic rod to extend or contract its output, and drives the other two sets of second frame plates and the second rotating drum to move synchronously with the cooperation of the first rack, the first long rotating column, the first transmission gear and the second long rotating column, so that the first rotating drum and the second rotating drum can be synchronously moved close to or away from the middle side, and the position can be adjusted to place pipes with different outer diameters. In the process of processing pipes with different outer diameters, there is no need to use placement racks of different sizes. At the same time, in the process of welding, the first motor is turned on to drive the horizontal transmission column and the rotating column to rotate, and the first rotating drum can be rotated under the action of the sleeve to rotate the placed pipe, so that the welding device body can perform a circle of welding processing on the joint part of the pipe, and there is no need to hold the welding equipment in a circle for welding processing.

[0024] 2. After the welding process is completed, the present invention turns on the powerful fan and the semiconductor refrigeration plate. The semiconductor refrigeration plate cools the air flowing in the box through the second heat-conducting column, and the powerful fan discharges the cold air into the processed pipe through the ventilation pipe. The flowing air returns to the box through the exhaust hood, the exhaust pipe, the long return pipe, etc., to achieve circulating air cooling, and quickly cool the pipe after the welding process.

[0025] 3. The present invention drives the extension end of the telescopic rotating shaft to extend by turning on the electric cylinder, allowing the first polishing piece to contact the outside of the welding part. At the same time, the sleeve can drive the telescopic rotating shaft and the first polishing piece to rotate through the first transmission shaft shell during the rotation process, and polish the outside. When the infusion pump is turned on, the passivation liquid inside the liquid storage tank can be sprayed out from the nozzle to reduce dust on the polished position on the outside. The sprayed passivation liquid can protect the outside. When the circulating air passes through the long return pipe, it can also transfer cold through the heat conducting plate to cool the passivation liquid in the liquid storage tank. The polished outside can also be cooled by the sprayed low-temperature passivation liquid.

[0026] 4. The present invention drives the second grinding piece to fit the inner wall of the pipe welding processing part by opening the third hydraulic rod to extend its output shaft, and drives the second grinding piece to rotate by opening the third motor, so as to grind the inner side of the welding part synchronously. The internal and external grinding are performed synchronously, which is more efficient and does not require staff to grind inside the pipe. Moreover, the circulating air can also carry the debris generated by the inner grinding into the box, which not only achieves the cooling of the inner grinding, but also can use the blocking net to block the debris and collect the debris into the box, so as to avoid the debris generated by the inner grinding causing inconvenience to the cleaning work. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention viewed from the right side;

[0028] Figure 2 It is a schematic diagram of the structure of the present invention when it is working;

[0029] Figure 3 It is a schematic diagram of the three-dimensional structure of the present invention when viewed from the rear side;

[0030] Figure 4 It is a structural schematic diagram of the synchronous adjustment mechanism in the present invention;

[0031] Figure 5 It is a schematic diagram of the partial structure of the synchronous adjustment mechanism of the present invention from the right side viewing angle;

[0032] Figure 6 It is a structural schematic diagram of the driving mechanism in the present invention;

[0033] Figure 7 is a cross-sectional view of the cover shell of the present invention;

[0034] Figure 8 It is a schematic structural diagram of the vertical transmission column and the rotating column in the present invention;

[0035] Fig. 9 It is a schematic diagram of the three-dimensional structure of the cover shell in the present invention from the right side perspective;

[0036] Fig.10 It is a structural schematic diagram of the air return mechanism in the present invention;

[0037] Fig.11 It is a partial structural schematic diagram of the refrigeration and air blowing mechanism in the present invention;

[0038] Fig.12 It is a bottom view structural schematic diagram of the movable seat in the present invention;

[0039] Fig.13 For the present invention Fig.11 A schematic diagram of the enlarged structure at A in the middle;

[0040] Fig.14 is a cross-sectional view of the liquid storage tank of the present invention;

[0041] Fig.15 It is a cross-sectional view of the box body in the present invention;

[0042] Fig.16 It is a schematic diagram of the local structure of the refrigeration component in the present invention.

[0043] In the figure: 1, base; 2, support frame; 3, welding device body; 4, first hydraulic rod; 5, first frame plate; 6, first rotating drum; 7, fixing rod; 8, second frame plate; 9, second rotating drum; 10, sliding sleeve; 11, synchronous adjustment mechanism; 111, first rack; 112, first long rotating column; 113, first transmission gear; 114, second long rotating column; 115, second transmission gear; 116, second rack; 12, arc bracket; 13, driving mechanism; 131, first Motor; 132, vertical plate; 133, rotating column; 134, horizontal transmission column; 135, vertical transmission column; 136, sleeve; 137, lifting plate; 14, external grinding mechanism; 141, cover; 142, first transmission shaft; 143, telescopic rotating shaft; 144, connecting plate; 145, electric cylinder; 146, first grinding piece; 147, discharge pipe; 15, liquid storage tank; 16, infusion mechanism; 161, infusion pump; 162, suction tube; 163, first hose; 16 4. connecting pipe; 165. nozzle; 17. box; 18. refrigeration and air blowing mechanism; 181. powerful fan; 182. second hose; 183. track; 184. refrigeration assembly; 1841. frame; 1842. semiconductor refrigeration sheet; 1843. first heat-conducting column; 1844. second heat-conducting column; 1845. fan; 1846. heat-insulating box; 185. moving seat; 186. ventilation pipe; 187. rotating shaft; 188. second motor; 189. walking wheel; 1 9. Return air mechanism; 191. Fixed bracket; 192. Turntable; 193. Second hydraulic rod; 194. Cross bar; 195. Exhaust hood; 196. Exhaust pipe; 197. Third hose; 198. Long return pipe; 199. Heat conducting plate; 1910. Blocking net; 20. Internal grinding mechanism; 201. Support plate; 202. Third hydraulic rod; 203. Movable plate; 204. Vertical plate; 205. Third motor; 206. Transmission rod; 207. Second grinding piece; 21. Movable column. DETAILED DESCRIPTION

[0044] 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.

[0045] See also Figure 1-Figure 16, welding equipment, including a base 1, a support frame 2 and a welding device body 3, the support frame 2 is bolted to the rear of the top of the base 1, the welding device body 3 is a prior art, common electric welding equipment, the welding head is facing downward, and its lifting is controlled by a hydraulic rod, the specific structure and working method of the welding device body 3 are not described in detail, the equipment also includes a synchronous adjustment mechanism 11, a driving mechanism 13, an external grinding mechanism 14, an infusion mechanism 16, a cooling and blowing mechanism 18, a return air mechanism 19 and an internal grinding mechanism 20, the top of the base 1 is bolted with a first hydraulic rod 4, the output shaft of the first hydraulic rod 4 is bolted with a first frame plate 5, and the inner side of the first frame plate 5 is rotated A first rotating drum 6 is connected, an arc-shaped bracket 12 is bolted to the top of the base 1, fixing rods 7 are bolted to both sides of the top of the base 1, and a sliding sleeve 10 is bolted to the other end of the fixing rod 7. A second frame plate 8 is provided above the base 1 and on both sides of the first frame plate 5. The inner side of the second frame plate 8 is rotatably connected to the second rotating drum 9, and movable columns 21 are bolted to two places on one side of the second frame plate 8, and the movable column 21 is slidably connected to the inner wall of the sliding sleeve 10. With the cooperation of the movable column 21 and the sliding sleeve 10, the second frame plates 8 on both sides can move along the inclined straight line direction, and a liquid storage tank 15 and a box body 17 are bolted to the top of the base 1 and on both sides of the support frame 2.

[0046] The synchronous adjustment mechanism 11 includes a first rack 111, a first long rotating column 112 and a second long rotating column 114. The number of the second long rotating column 114 is two groups and they are respectively located on both sides of the first long rotating column 112. The first long rotating column 112 and the second long rotating column 114 are both rotatably connected to the arc bracket 12, and the first long rotating column 112 is respectively connected to the second long rotating columns 114 on both sides through a timing belt transmission. The first rack 111 and the first frame plate 5 are bolted to each other. The surface of the first long rotating column 112 is fixed with a 1, the first transmission gear 113 meshes with the first rack 111, the second transmission gear 115 is fixed on the surface of the second long rotating column 114, a second rack 116 is bolted to one side of the second frame plate 8, and the second rack 116 meshes with the second transmission gear 115, the first rotating drum 6 and the second rotating drums 9 on both sides form a semi-arc, the first hydraulic rod 4 is turned on to extend its output shaft, which drives the first frame plate 5 and the first rotating drum 6 to rise, thereby driving the first rack 111 to move upward. The first transmission gear 113 and the first long rotating column 112 rotate counterclockwise, and the first long rotating column 112 drives the second long rotating columns 114 on both sides to rotate counterclockwise through the timing belt, and drives the second transmission gears 115 on both sides to rotate counterclockwise, so that the second racks 116 on both sides drive the second frame plate 8 and the second rotating drum 9 to move closer to the middle side. Under the action of the sliding sleeve 10 and the movable column 21, the second frame plate 8 and the second rotating drum 9 can move linearly along the inclined direction, and the first rotating drum 6 below and the second rotating drums on both sides are 9 simultaneously approaches the middle side and re-forms a semi-arc, reducing the size of the semi-arc to adapt to metal pipes with a slightly smaller outer diameter. Conversely, opening the first hydraulic rod 4 to shrink its output shaft can drive the first frame plate 5 and the first rotating drum 6 to descend, allowing the first long rotating column 112 and the second long rotating column 114 to rotate clockwise, which makes the second frame plates 8 and the second rotating drum 9 on both sides move away from the middle side, expanding the size of the semi-arc to adapt to metal pipes with a large outer diameter, thereby facilitating the placement of metal pipes with a DN of 300 to 500 and expanding the adaptability of the equipment itself.

[0047] After the size of the first drum 6 and the second drum 9 is adjusted, the metal pipes to be welded are placed inside the first drum 6 and the second drum 9. Figure 2As shown, the butted part is located below the welding device body 3, and the welding device body 3 is lowered for welding. The driving mechanism 13 includes a first motor 131, a vertical plate 132 and a rotating column 133. The first motor 131 and the vertical plate 132 are bolted to the top of the base 1. The number of the vertical plates 132 is two groups and they are respectively located on both sides of the first motor 131. The rotating column 133 is rotatably connected to the surface of the vertical plate 132. The surface of the vertical plate 132 is also rotatably connected to a horizontal transmission column 134. The number of the rotating columns 133 is two groups. The output shaft of the machine 131 is connected to the horizontal transmission column 134 through gear transmission, and the two sides of the horizontal transmission column 134 are respectively connected to the rotating column 133 through bevel gear transmission. The driving mechanism 13 also includes a lifting plate 137 bolted to one side of the first frame plate 5, and both sides of the surface of the lifting plate 137 are rotatably connected with sleeves 136, and the sleeve 136 is connected to the first rotating drum 6 through bevel gear transmission. A vertical transmission column 135 is welded to the top of the rotating column 133, and the vertical transmission column 135 is slidably connected to the inner wall of the sleeve 136, and the cross section of the vertical transmission column 135 is a cross. The sleeve 136 is designed in a shape, and the shape of the inner wall of the sleeve 136 is the same as that of the vertical transmission column 135. During the process of the first frame plate 5 and the first rotating drum 6 rising or falling for adjustment, it can drive the lifting plate 137 to rise or fall together, so that the sleeve 136 can slide along the surface of the vertical transmission column 135. At the same time, when the first motor 131 is turned on, its output shaft drives the horizontal transmission column 134 to rotate through the gear, and the horizontal transmission column 134 drives the vertical transmission columns 135 on both sides to rotate synchronously through the bevel gear, and the vertical transmission column 135 drives the sleeve 136 on its surface to rotate synchronously. 36 rotates, the sleeve 136 drives the first rotating drum 6 to rotate slowly, and the two groups of first rotating drums 6 rotate in the same direction to drive the two parts of the metal pipe to rotate synchronously. The second rotating drums 9 on both sides can also ensure the smooth rotation of the metal pipe, so that the part to be welded next can be aligned with the welding device body 3. After the welding of the next part is completed, the pipe is rotated slightly again to weld, and so on, so that the pipe is rotated one circle for welding. There is no need to hold the welding gun and weld around the pipe for one circle. By rotating the pipe itself, the welding work around the circle is achieved, which is more convenient.

[0048] The refrigeration and blowing mechanism 18 includes a powerful fan 181, a second hose 182, a track 183 and a refrigeration assembly 184. The inlet end of the powerful fan 181 is connected to the box 17 through a pipeline, and one end of the second hose 182 is connected to the outlet end of the powerful fan 181. The number of the track 183 is two groups and is bolted to the top of the base 1. The refrigeration assembly 184 includes an insulation box 1846 bolted to the top of the box 17. The interior of the insulation box 1846 is bolted with a frame 1841. The surface of the frame 1841 is fixed with a semiconductor refrigeration sheet 1842. The frame 1841 is The first heat-conducting column 1843 and the second heat-conducting column 1844 are bolted to the upper and lower sides respectively. The cooling surface of the semiconductor cooling sheet 1842 faces the second heat-conducting column 1844, and the heating surface of the semiconductor cooling sheet 1842 faces the first heat-conducting column 1843. The bottom end of the second heat-conducting column 1844 penetrates into the interior of the box body 17, and the top end of the first heat-conducting column 1843 penetrates to the outside of the heat-insulating box 1846. A fan 1845 is also bolted to one side of the heat-insulating box 1846. When the semiconductor cooling sheet 1842 is turned on, the cooling surface below it generates cold energy, which is transferred to the box through the second heat-conducting column 1844. The interior of the body 17, and the heating surface of the semiconductor refrigeration sheet 1842 transfers heat to the first heat-conducting column 1843 above. When the fan 1845 is turned on, the heat generated by the first heat-conducting column 1843 can be taken away by air flow. The refrigeration and air blowing mechanism 18 also includes a movable seat 185, and the top of the movable seat 185 is bolted with an L-shaped ventilation pipe 186, and the other end of the second hose 182 is connected to the ventilation pipe 186. The bottom of the movable seat 185 is connected to a rotating shaft 187, and both ends of the rotating shaft 187 are bolted with walking wheels 189, and the walking wheels 189 are connected to the rail. The surface of the track 183 is rollingly connected, and the bottom of the movable seat 185 is also bolted with a second motor 188, and the output shaft of the second motor 188 is connected to the rotating shaft 187 through a belt drive. After the pipeline is placed on the surface of the rotating drum and before welding, the second motor 188 is turned on, and its output shaft drives the rotating shaft 187 and the walking wheel 189 to rotate through the belt. The walking wheel 189 moves along the surface of the track 183 and drives the movable seat 185 above to move. The movable seat 185 drives the ventilation pipe 186 to move together, allowing the ventilation pipe 186 to enter the metal pipe being welded.

[0049] The return air mechanism 19 includes a fixed bracket 191, a rotating disk 192 and a second hydraulic rod 193. The fixed bracket 191 is bolted to the top of the base 1, and the second hydraulic rod 193 is bolted to the top of the fixed bracket 191. The return air mechanism 19 also includes an exhaust hood 195 and a long return pipe 198. Both sides of the exhaust hood 195 are bolted with cross bars 194, and the other end of the cross bar 194 is fixed to the output shaft of the second hydraulic rod 193. The rotating disk 192 is rotatably connected to the surface of the exhaust hood 195. A third hose 197 is connected to one side of the exhaust hood 195, and the other end of the third hose 197 is connected to the long return pipe 198. The long return pipe 198 passes through the liquid storage tank 15 and is connected to the box body 17. A blocking net 1910 is provided inside the box body 17. Before welding and when the pipeline is placed, the second hydraulic rod 193 is opened to extend its output shaft to drive the rotating disk. 192 is fitted on the end of the processed pipe, and the height of the exhaust hood 195 is the same as that of the ventilation pipe 186. After a circle of welding is completed, the powerful fan 181 and the semiconductor refrigeration plate 1842 are turned on. The semiconductor refrigeration plate 1842 cools the air inside the box 17, and then the powerful fan 181 draws air from the box 17, and then inputs it into the processed pipe through the second hose 182 and the ventilation pipe 186, and delivers cold air to the pipe that has just been welded to achieve rapid cooling. At the same time, the air can return to the interior of the box 17 from the exhaust hood 195, the exhaust pipe 196, the third hose 197 and the long return pipe 198 on the other side to achieve air circulation, cooling and temperature reduction, and rapid cooling of the welded pipe. Cooling can reduce the accumulation of heat energy during welding, thereby reducing the heat affected area of ​​the workpiece and reducing the degree of welding deformation.

[0050] The external grinding mechanism 14 includes a cover shell 141, a first transmission shaft shell 142 and a telescopic rotating shaft 143. The cover shell 141 is bolted to the top of the lifting plate 137. The top of the cover shell 141 is designed in an arc shape. The first transmission shaft shell 142 is rotatably connected to the bottom of the lifting plate 137. The first transmission shaft shell 142 is connected to the sleeve 136 through gear transmission. The sleeve 136 drives the first transmission shaft shell 142 to rotate in the form of a large gear driving a small gear, thereby achieving the effect of increasing the speed of the first transmission shaft shell 142. The telescopic rotating shaft 143 is a rotating shaft with an extension or shortening function. The surface of the telescopic rotating shaft 143 passes through the cover shell 141 and the lifting plate 137. The telescopic rotating shaft 143 is rotatably connected to the penetration of the cover shell 141 and the lifting plate 137 respectively. The first transmission shaft shell 142 is connected to the telescopic rotating shaft 143 through gear transmission. The first transmission shaft shell 142 drives the telescopic rotating shaft 143 to rotate in the form of a large gear driving a small gear. An electric Cylinder 145, the output shaft of the electric cylinder 145 is bolted with a connecting plate 144, and the extended end of the telescopic rotating shaft 143 is rotatably connected to the surface of the connecting plate 144, and the top of the extended end of the telescopic rotating shaft 143 is bolted with a first grinding piece 146. After the welding process is completed, the first motor 131 is continuously turned on to drive the first rotating drum 6 to rotate, so that the welded pipe continues to rotate, and at the same time, the sleeve 136 drives the first transmission shaft shell 142 to rotate during the rotation process, and the first transmission shaft shell 142 drives the telescopic rotating shaft 143 to rotate, and the telescopic rotating shaft 143 rotates at a faster speed. At the same time, the connecting plate 144 does not affect the extension end of the telescopic rotating shaft 143 to follow the rotation, and the electric cylinder 145 is turned on, and its output shaft is extended to drive the connecting plate 144 and the extended end of the telescopic rotating shaft 143 to rise, so that the first grinding piece 146 rises synchronously, and the first grinding piece 146 contacts the surface of the welding part for grinding, and most of the debris generated by grinding falls into the cover shell 141.

[0051] The infusion mechanism 16 includes an infusion pump 161, a suction tube 162 and a first hose 163. One end of the suction tube 162 is interconnected with the liquid storage tank 15. The interior of the liquid storage tank 15 is filled with passivation liquid. The other end of the suction tube 162 is interconnected with the inlet end of the infusion pump 161. The outlet end of the infusion pump 161 is connected with the first hose 163. The other end of the first hose 163 is connected with a connecting tube 164. The other end of the connecting tube 164 passes through the interior of the cover 141 and is connected with a nozzle 165. A plurality of heat conducting sheets 199 are fixed inside the liquid storage tank 15 and on the surface of the long return tube 198. After the circulating air circulates for many times, its temperature is greatly increased. The temperature of the passivation liquid in the liquid storage tank 15 is reduced, and part of the cold energy generated can be transferred to the passivation liquid inside the liquid storage tank 15 through the heat conducting sheet 199. When the first grinding piece 146 is grinding the weld scar at the pipe connection outside, the infusion pump 161 is turned on to extract the low-temperature passivation liquid inside the liquid storage tank 15 through the suction tube 162, and then pass through the first hose 163 and the connecting pipe 164 and spray it out from the nozzle 165 to reduce dust on the grinded part on the outside, and at the same time, the heat generated by the grinding can also be cooled. The main function of the passivation liquid in removing the weld scar of stainless steel is to improve the corrosion resistance of stainless steel. The passivation liquid sprayed on the position where the weld scar is ground can also protect the pipeline.

[0052] The inner grinding mechanism 20 includes a support plate 201, a third hydraulic rod 202 and a movable plate 203. The support plate 201 is bolted to one side of the ventilation pipe 186. The third hydraulic rod 202 is bolted to the top of the support plate 201. The movable plate 203 is bolted to the output shaft of the third hydraulic rod 202. The top of the movable plate 203 is bolted to a vertical plate 204 and a third motor 205. The surface of the vertical plate 204 is rotatably connected to a transmission rod 206. The output shaft of the third motor 205 is connected to the transmission rod 206 through a belt drive. One end of the transmission rod 206 is fixed with a second grinding member 20 7. When the ventilation pipe 186 extends into the interior of the processed pipe, it is necessary to adjust the position of the movable seat 185, and at the same time, the internal grinding mechanism 20 can also move with the movable seat 185, so that the second grinding piece 207 is aligned with the inner side of the welding part; after the welding process is completed, the first rotating drum 6 drives the processed pipe to rotate continuously, and at the same time, the circulating air is turned on by the powerful fan 181 for cooling, and the external first grinding piece 146 grinds the outside of the pipe welding, and at this time, the third hydraulic rod 202 can be opened to extend its output shaft, which drives the movable plate 203 and the vertical plate 204. The second grinding piece 207 rises, and the second grinding piece 207 contacts the inner side of the welding part, and the third motor 205 is synchronously turned on to drive the transmission rod 206 and the second grinding piece 207 to rotate, and the welding scar at the pipe connection is ground on the inner side, without the need for workers to enter for grinding, and the circulating air entering the processed pipe is blown out from the outlet of the ventilation pipe 186, and the internal grinding position is cooled, and the debris generated by the grinding can also be blown away, and the suction force generated at the inlet of the powerful fan 181 makes the circulating air and the debris pass through the exhaust hood 195, the exhaust pipe 196, and the third hose 19 7 and the long return pipe 198 return to the interior of the box body 17, and the circulating air brings the debris generated by the internal grinding back to the box body 17 and is intercepted by the blocking net 1910, so that the debris generated by the grinding is not likely to remain in the pipeline. A door can be provided on the surface of the box body 17 during actual use to open and take out the debris collected inside. The bottom of the cover shell 141 is also connected to a drain pipe 147, and a collection container is placed at the other end of the drain pipe 147. The debris generated by the external grinding and the sprayed passivation liquid can be discharged into the collection container through the drain pipe 147 under the cover shell 141 for recycling.

[0053] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding device, comprising a base (1), a support frame (2) and a welding device body (3), characterized in that: A first hydraulic rod (4) bolted to the top of the base (1), the output shaft of the first hydraulic rod (4) being bolted to a first frame plate (5), the inner side of the first frame plate (5) being rotatably connected to a first rotating drum (6), and the top of the base (1) being further bolted to an arc-shaped bracket (12); A fixing rod (7) is bolted to both sides of the top of the base (1), the other end of the fixing rod (7) is bolted to a sliding sleeve (10), a second frame plate (8) is arranged above the base (1) and on both sides of the first frame plate (5), a second rotating drum (9) is rotatably connected to the inner side of the second frame plate (8), two locations on one side of the second frame plate (8) are bolted to movable columns (21), and the movable columns (21) are slidably connected to the inner wall of the sliding sleeve (10); a synchronous adjustment mechanism (11) for moving the first rotating drum (6) and the second rotating drums (9) on both sides; a driving mechanism (13) is also provided on the top of the base (1); An external grinding mechanism (14) for externally grinding the pipe connection portion; An infusion mechanism (16) used in conjunction with the external polishing mechanism (14), wherein a liquid storage tank (15) and a box body (17) are bolted to the top of the base (1) and located on both sides of the support frame (2); A refrigeration and air blowing mechanism (18) for blowing out cold air to cool the pipe being welded; an air return mechanism (19) for use with the refrigeration and air blowing mechanism (18) and for recovering debris; An internal grinding mechanism (20) for grinding the inside of the pipe being welded; The refrigeration and air blowing mechanism (18) comprises a powerful fan (181), a second hose (182), a track (183) and a refrigeration assembly (184); the inlet end of the powerful fan (181) is in communication with the box (17) via a pipeline; one end of the second hose (182) is in communication with the outlet end of the powerful fan (181); the track (183) is provided in two groups and is bolted to the top of the base (1); the refrigeration and air blowing mechanism (18) further comprises a movable seat (185); the top of the movable seat (185) is A ventilation pipe (186) of L-shaped design is bolted to the bottom of the movable seat (185), and the other end of the second hose (182) is in communication with the ventilation pipe (186). The bottom of the movable seat (185) is rotatably connected to a rotating shaft (187), and both ends of the rotating shaft (187) are bolted to running wheels (189), and the running wheels (189) are rollingly connected to the surface of the track (183). The bottom of the movable seat (185) is also bolted to a second motor (188), and the output shaft of the second motor (188) is connected to the rotating shaft (187) via a belt drive. The refrigeration assembly (184) comprises a heat-insulating box (1846) bolted to the top of the box body (17); a frame (1841) is bolted inside the heat-insulating box (1846); a semiconductor refrigeration plate (1842) is fixed on the surface of the frame (1841); and a first heat-conducting column (1843) and a second heat-conducting column (1844) are bolted to the upper and lower sides of the frame (1841), respectively.

2. The welding device according to claim 1, characterized in that: The synchronous adjustment mechanism (11) comprises a first rack (111), a first long rotating column (112) and a second long rotating column (114); the number of the second long rotating column (114) is two groups and they are respectively located on both sides of the first long rotating column (112); the first long rotating column (112) and the second long rotating column (114) are both rotatably connected to the arc-shaped bracket (12); the first long rotating column (112) is respectively connected to the second long rotating columns (114) on both sides through a timing belt transmission; the first rack (111) and the first frame plate (5) are bolted to each other; a first transmission gear (113) meshing with the first rack (111) is fixed on the surface of the first long rotating column (112); a second transmission gear (115) is fixed on the surface of the second long rotating column (114); a second rack (116) is bolted to one side of the second frame plate (8); and the second rack (116) and the second transmission gear (115) are meshing with each other.

3. The welding device according to claim 1, characterized in that: The driving mechanism (13) comprises a first motor (131), a vertical plate (132) and a rotating column (133); the first motor (131) and the vertical plate (132) are both bolted to the top of the base (1); the vertical plates (132) are provided in two groups and are respectively located on both sides of the first motor (131); the rotating column (133) is rotatably connected to the surface of the vertical plate (132); the surface of the vertical plate (132) is also rotatably connected to a horizontal transmission column (134); the rotating column (133) is provided in two groups; the output shaft of the first motor (131) is connected to the horizontal transmission column (134) via gear transmission; the horizontal transmission column (134) is provided with a plurality of rotating columns (133); The two sides of the first frame plate (5) are respectively connected to the rotating column (133) through bevel gear transmission. The driving mechanism (13) further includes a lifting plate (137) bolted to one side of the first frame plate (5). Both sides of the surface of the lifting plate (137) are rotatably connected to sleeves (136), and the sleeve (136) is connected to the first rotating drum (6) through bevel gear transmission. A vertical transmission column (135) is welded to the top of the rotating column (133), and the vertical transmission column (135) is slidably connected to the inner wall of the sleeve (136). The cross-section of the vertical transmission column (135) is cross-shaped, and the shape of the inner wall of the sleeve (136) is the same as that of the vertical transmission column (135).

4. The welding device according to claim 3, characterized in that: The external grinding mechanism (14) comprises a cover shell (141), a first transmission shaft shell (142) and a telescopic rotating shaft (143); the cover shell (141) is bolted to the top of the lifting plate (137); the first transmission shaft shell (142) is rotatably connected to the bottom of the lifting plate (137); the first transmission shaft shell (142) is connected to the sleeve (136) via gear transmission; the surface of the telescopic rotating shaft (143) passes through the cover shell (141) and the lifting plate (137); the telescopic rotating shaft (143) is The first transmission shaft housing (142) is connected to the telescopic rotating shaft (143) through a gear transmission; an electric cylinder (145) is bolted to one side of the inner wall of the cover shell (141); the output shaft of the electric cylinder (145) is bolted to a connecting plate (144); and the extended end of the telescopic rotating shaft (143) is rotatably connected to the surface of the connecting plate (144); and a first polishing member (146) is bolted to the top of the extended end of the telescopic rotating shaft (143).

5. The welding device according to claim 4, characterized in that: The infusion mechanism (16) comprises an infusion pump (161), a suction tube (162) and a first hose (163); one end of the suction tube (162) is in communication with the liquid storage tank (15); the other end of the suction tube (162) is in communication with the inlet end of the infusion pump (161); the outlet end of the infusion pump (161) is in communication with the first hose (163); the other end of the first hose (163) is in communication with a connecting tube (164); the other end of the connecting tube (164) passes through the interior of the housing (141) and is in communication with a nozzle (165).

6. The welding device according to claim 1, characterized in that: The air return mechanism (19) comprises a fixed bracket (191), a rotating disk (192) and a second hydraulic rod (193); the fixed bracket (191) is bolted to the top of the base (1); the second hydraulic rod (193) is bolted to the top of the fixed bracket (191); the air return mechanism (19) further comprises an exhaust hood (195) and a long return pipe (198); both sides of the exhaust hood (195) are bolted to a cross bar (194); and the other end of the cross bar (194) is fixed to the output shaft of the second hydraulic rod (193). The rotating disk (192) is rotatably connected to the surface of the exhaust hood (195); a third hose (197) is provided on one side of the exhaust hood (195); the other end of the third hose (197) is connected to a long return pipe (198); the long return pipe (198) passes through the liquid storage tank (15) and is connected to the box body (17); a blocking net (1910) is provided inside the box body (17); and a plurality of heat conducting sheets (199) are fixed inside the liquid storage tank (15) and on the surface of the long return pipe (198).

7. The welding device according to claim 1, characterized in that: The inner grinding mechanism (20) comprises a support plate (201), a third hydraulic rod (202) and a movable plate (203); the support plate (201) is bolted to one side of the ventilation pipe (186); the third hydraulic rod (202) is bolted to the top of the support plate (201); the movable plate (203) is bolted to the output shaft of the third hydraulic rod (202); the top of the movable plate (203) is bolted to a vertical plate (204) and a third motor (205), respectively; the surface of the vertical plate (204) is rotatably connected to a transmission rod (206); the output shaft of the third motor (205) is connected to the transmission rod (206) via a belt drive; and a second grinding member (207) is fixed to one end of the transmission rod (206).

8. A welding method for a welding device, characterized in that: A welding device according to any one of claims 1 to 7 is used.

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