A welding device for producing a rotary joint

Abstract

The application discloses a welding device for producing a rotary joint and relates to the technical field of rotary joint production. The welding device comprises a workbench, a rotating seat rotatably connected to the top of the workbench, a speed reducer fixedly installed at the bottom of the workbench, and an output end of the speed reducer fixedly connected to the rotating seat through the workbench. The welding device further comprises a fixing frame symmetrically installed at the top of the rotating seat, and rotating shafts rotatably connected to the top of each of the two fixing frames. The welding device can be used for fixing flanges and pipes when welding the flanges or the pipes at the inlet and outlet ends of the rotary joint, avoids replacing different fixing structures when facing different welding objects, improves the application range of welding, can weld bent pipes with different bending degrees when welding the pipes, can ensure that one end of the bent pipe is tightly attached to the inlet and outlet ends of the rotary joint, avoids deviation of pipe butt joint, and improves the welding quality.

Description

Technical Field

[0001] This invention relates to the field of rotary joint manufacturing technology, specifically to a welding apparatus for manufacturing rotary joints. Background Technology

[0002] A rotary joint is a precision mechanical device used to transfer fluids, gases, or energy while allowing two components to rotate relative to each other.

[0003] For example, a welding fixture for producing rotary joints, as described in announcement number CN219542150U, uses a clamping assembly with a clamping block, retaining ring, clamping spring, and arc-shaped clamping block to clamp the rotary joint. This facilitates accurate calibration of the flange position, improves work efficiency, and increases welding precision. However, in actual use, when welding rotary joints, the inlet and outlet ends are generally welded to externally fixed conveying pipelines or connecting flanges. When welding the joint to the connecting pipeline, the rotary joint's function is to achieve fluid transmission under dynamic sealing. Its two ends can be connected to straight or bent pipes to adapt to complex... Due to the complex piping layout, rotary joints of different specifications may be fitted with connecting bends of different sizes and curvatures. When welding rotary joints, flanges and pipes cannot be fixed simultaneously. In particular, when fixing pipes, straight pipes and bends of different curvatures cannot be fixed. When welding rotary joints, different fixing structures are required for different welding objects, which is inconvenient. Welding is required at both the inlet and outlet ends of the rotary joint. After welding one end of the rotary joint, it is not easy to flip and adjust the welding position. The welding efficiency is low, and there are certain defects in its use.

[0004] Therefore, we propose a welding apparatus for producing rotary joints in order to solve the problems mentioned above. Summary of the Invention

[0005] The purpose of this invention is to provide a welding apparatus for producing rotary joints, in order to solve the problems mentioned in the background art, such as the need to use different fixing structures for different welding objects, the inconvenience of fixing the welding objects, the need for welding at both the inlet and outlet ends of the rotary joint, the difficulty of flipping and adjusting the welding position after welding at one end of the rotary joint, and the low welding efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a welding device for producing rotary joints, comprising a worktable, a rotating seat rotatably connected to the top of the worktable, and a geared motor fixedly installed at the bottom of the worktable, wherein the output end of the geared motor passes through the worktable and is fixedly connected to the rotating seat.

[0007] Also includes:

[0008] The fixed frames are symmetrically installed on the top of the rotating seat. The upper interior of each fixed frame is rotatably connected to a rotating shaft, and a cylinder is fixedly installed between the two rotating shafts.

[0009] A positioning component is disposed above two fixed frames, and the positioning component includes two support frames;

[0010] The fixing component is located on the outside of the cylinder;

[0011] Two support frames are fixedly installed on the top of two fixed frames respectively. A U-shaped frame is fixedly installed at the end of the two support frames that are close to each other. A positioning block is fixedly installed on the top of one fixed frame, and a positioning rod is slidably connected inside the positioning block. One end of the positioning rod is fixedly connected to one support frame.

[0012] The support block is fixedly installed on the top of the other side of the fixed frame. The internal thread of the support block is connected to a stud, and one end of the stud is rotatably connected to the other side of the support frame.

[0013] Preferably, the inner side of the U-shaped frame is symmetrically provided with movable plates, and mounting frames are symmetrically installed on the side of the two movable plates that are close to each other. A positioning roller is rotatably connected between the two mounting frames on each side. At the same time, an arc top plate is fixedly installed on the two movable plates below the positioning roller. A limit frame is fixedly installed on the side of the two movable plates that are far apart from each other, and the limit frame is slidably connected to the U-shaped frame.

[0014] By adopting the above technical solution, the positioning roller facilitates the clamping and fixing of the pipeline.

[0015] Preferably, a fixing block is symmetrically installed on one side of the U-shaped frame, and a bidirectional screw is rotatably connected between the two fixing blocks. One end of the bidirectional screw passes through one fixing block and is fixedly installed with a knob. Simultaneously, a movable plate is symmetrically threaded to the outside of the bidirectional screw. A sliding groove is symmetrically opened through the U-shaped frame on one side of the bidirectional screw, and the movable plate is slidably connected to the sliding groove. A fixing rod is fixedly installed on the side of the two movable plates that are far apart. A connecting frame is slidably connected to the outside of the fixing rod, and the connecting frame is fixedly connected to the movable plate. A telescopic spring is sleeved on the outside of the fixing rod on one side of the connecting frame, and both ends of the telescopic spring are fixedly connected to the movable plate and the connecting frame.

[0016] By adopting the above technical solution, the moving cover plate can continue to move after the positioning roller comes into contact with the pipe.

[0017] Preferably, an L-shaped frame is fixedly installed on the top side of the U-shaped frame, and movable rods are symmetrically slidably connected to the upper part of the L-shaped frame. A movable frame is fixedly installed at the bottom end of the two movable rods. A rubber roller is rotatably connected to the inner side of the movable frame. A return spring is sleeved on the outside of the two movable rods above the movable frame, and the two ends of the return spring are fixedly connected to the movable frame and the L-shaped frame, respectively.

[0018] By adopting the above technical solution, it is possible to position the upper outer part of the bend.

[0019] Preferably, a mounting plate is fixedly installed on the outside of the two movable rods above the L-shaped frame, and a sliding plate is slidably connected to the outside of the two movable rods above the mounting plate. A support spring is sleeved between the sliding plate and the mounting plate on the outside of the two movable rods, and the two ends of the support spring are fixedly connected to the sliding plate and the mounting plate respectively.

[0020] By adopting the above technical solution, the mounting plate can be automatically reset after being moved.

[0021] Preferably, L-shaped plates are symmetrically installed on the top of one side of the movable plate, and guide wheels are rotatably connected between the two L-shaped plates. A steel wire rope is fixedly installed on one side of the bottom of the sliding plate. At the same time, a through hole is opened at the top of the L-shaped frame below the steel wire rope. The end of the steel wire rope away from the sliding plate passes through the through hole and is fixedly installed with a connecting column. The connecting column is fixedly connected to the L-shaped frame, and the steel wire rope is rotatably connected to the guide wheel. Meanwhile, a guide column is rotatably connected to the inner side of the L-shaped frame above the guide wheel.

[0022] By adopting the above technical solution, the bending of the wire rope can drive the sliding plate to move.

[0023] Preferably, a vertical plate is fixedly installed at the bottom of the sliding plate on one side of the wire rope, and the vertical plate is slidably connected to the L-shaped frame. A rack is fixedly installed on the lower side of one side of the vertical plate. Meanwhile, one end of the rubber roller passes through the movable frame via a rotating shaft and is fixedly installed with a rotating gear. The rack is meshed with the rotating gear.

[0024] By adopting the above technical solution, the rubber roller can be driven to rotate when the upright plate moving frame is fixed.

[0025] Preferably, the fixing assembly includes a rotating ring rotatably connected to the upper part of the cylinder, and four sets of positioning plates are equidistantly slidably connected to the upper and lower sides of the rotating ring inside the cylinder. A column is fixedly installed between each pair of positioning plates. Four movable slots are symmetrically opened through the top axis of the rotating ring, and the column is slidably connected to the movable slots. A positioning frame is symmetrically installed on the lower side of the rotating ring outside the cylinder, and an electric push rod is hinged between two positioning frames. A connecting rod is hinged to the movable end of the electric push rod, and the top of the connecting rod is rotatably connected to the rotating ring.

[0026] By adopting the above technical solution, it is easy to fix the rotary joint.

[0027] Preferably, the two ends of the rotating shaft pass through two fixed brackets and are fixedly installed with turntables. The fixed brackets are located on one side of the turntable and fixedly installed with limit blocks. Knurled screws are installed inside the limit blocks. At the same time, threaded holes are symmetrically opened on both sides of the turntable, and the knurled screws are threadedly connected to the threaded holes.

[0028] By adopting the above technical solution, it is easy to flip the rotary joint.

[0029] Compared with the prior art, the beneficial effects of the present invention are: the welding device for producing rotary joints makes it applicable to fixing flanges and pipes when welding flanges or pipes at the inlet and outlet ends of rotary joints, avoiding the need to change different fixing structures when facing different welding objects, thus improving the applicability of welding. At the same time, when welding pipes, it can weld bends with different degrees of curvature, and can ensure that one end of the bend is in close contact with the inlet and outlet ends of the rotary joint, avoiding deviations in pipe connection and improving the quality of welding.

[0030] 1. When welding flanges at the inlet and outlet ends of the rotary joint, the stud can be rotated to move it, which in turn moves the two support frames, causing the positioning rod to slide on the positioning block. This allows the end cap on the positioning rod to engage with the positioning block, ensuring the center of the two support frames is on the same vertical line as the center of the cylinder. The flange can then be placed on the rotary joint, and the knob can be turned to rotate the bidirectional screw (or a drive device can be used to rotate the bidirectional screw). This will move the two moving plates simultaneously, causing the arc-shaped plates on the moving plates to clamp the flange, thus fixing it in place. When welding straight pipes, the two positioning rollers clamp the straight pipe, fixing it in place. When welding bent pipes, the bent pipe is placed on the rotary joint, and the stud is rotated to move the two support frames. The axis of the two positioning rollers is adjusted, and then the bidirectional screw is rotated to make the two positioning rollers simultaneously contact the bent pipe. Continuing to rotate the bidirectional screw moves the two moving plates. Because the positioning rollers contact the bent pipe, the movement of the moving plates can move the fixed... The rod slides on the connecting frame and stretches the telescopic spring. The reaction force after the telescopic spring is stretched can stably clamp and fix the bend. The center of the positioning roller is arc-shaped, which can make the outer side of the connecting pipe fit with the center of the positioning roller, avoiding deviation between the pipe and the rotary joint. During welding, the reduction motor can be started to drive the rotating seat to rotate, which facilitates full-circumference welding. After welding one end of the rotary joint, the knurled screw can be rotated to disengage the knurled screw from the threaded hole on one side of the turntable. The cylinder can be rotated clockwise half a circle to align the knurled screw with the threaded hole on the other side. Then, the knurled screw can be screwed into the threaded hole on the other side to position the cylinder. This makes it easy to flip the rotary joint after welding one end, avoiding the need to re-fix the rotary joint. This allows for the fixing of flanges or pipes when welding flanges or pipes at the inlet and outlet ends of the rotary joint, avoiding the need to change different fixing structures when facing different welding objects, thus improving the applicability of welding. At the same time, when welding pipes, it can weld bends with different degrees of curvature.

[0031] 2. When fixing the bend, the positioning roller continues to move after contacting the bend, which can drive the L-shaped plate to move. After the L-shaped plate moves, it can push the wire rope to bend through the guide wheel. If the wire rope bends after one end is fixed to the connecting column, it can pull the sliding plate to move downward. The elastic coefficient of the support spring is much greater than that of the return spring. After the sliding plate moves downward, it can push the mounting plate downward through the support of the support spring, so that the two movable rods move downward. After the movable rods move downward, the rubber roller on the moving frame abuts against the outside of the bend, so that the bend can be further positioned. This is applicable to bends with different degrees of curvature. During the fixing process, the fixing effect can be guaranteed. After the rubber roller abuts against the bent tube, the bidirectional screw continues to rotate, causing the moving plate to move a small displacement. At this time, the rubber roller and the bent tube abut against the moving frame and the movable rod no longer move. The moving plate continues to move, which can pull the sliding plate to slide on the movable rod to compress the support spring, so that the upright plate can be moved down. During the downward movement of the upright plate, the moving frame no longer moves. The rubber roller can be driven to rotate counterclockwise through the meshing of the rack and the rotating gear, which can drive the bent tube to move downward. This ensures that one end of the bent tube and one end of the rotary joint fit tightly, avoids gaps, and improves the welding quality.

[0032] 3. When fixing the rotary joint, place it into the cylinder. The cylinder has a large inner diameter, and the rotary joint can be directly removed after welding the bent pipes at both ends. During the placement of the rotary joint, a laser pointer can be used to position the end face of the rotary joint so that the rotary joint is located in the middle of the cylinder. Then, the electric push rod can be activated to extend, so that the rotating ring can be pushed to rotate through the connecting rod. After the rotating ring rotates, it can be connected to the column rod through the movable groove, so that the four sets of positioning plates can be brought close at the same time. The four sets of positioning plates can clamp the rotary joint, which makes it easier to fix the rotary joint and facilitate subsequent welding. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0034] Figure 2 This is a partial structural diagram of the present invention;

[0035] Figure 3 This is a schematic diagram of the positioning component structure of the present invention;

[0036] Figure 4 This is a schematic diagram of the U-shaped frame structure of the present invention;

[0037] Figure 5 For the present invention Figure 4 Enlarged structural diagram of region A in the middle;

[0038] Figure 6 This is a schematic diagram of the L-shaped frame structure of the present invention;

[0039] Figure 7 For the present invention Figure 6 Enlarged structural diagram of region B in the middle;

[0040] Figure 8 This is a schematic diagram of the fixed component structure of the present invention;

[0041] Figure 9 For the present invention Figure 2 A magnified structural diagram of region C in the middle.

[0042] In the diagram: 1. Workbench; 101. Rotating seat; 102. Fixed frame; 103. Rotating shaft; 104. Cylinder; 105. Gear motor; 106. Turntable; 107. Limit block; 108. Knurled screw; 109. Threaded hole; 2. Positioning assembly; 201. Support frame; 202. U-shaped frame; 203. Positioning rod; 204. Positioning block; 205. Support block; 206. Stud; 207. Movable plate; 2071. Arc plate; 208. Mounting frame; 209. Positioning roller; 210. Limit frame; 211. Fixed block; 212. Bidirectional screw; 213. Moving plate; 214. Sliding groove; 215. 216. Connecting frame; 217. Fixed rod; 218. Telescopic spring; 219. L-shaped frame; 220. Movable rod; 221. Moving frame; 222. Rubber roller; 223. Return spring; 224. Mounting plate; 225. Support spring; 226. Sliding plate; 227. Steel wire rope; 228. Guide column; 229. Connecting column; 230. L-shaped plate; 231. Guide wheel; 232. Vertical plate; 233. Rack; 234. Rotating gear; 3. Fixed assembly; 301. Rotating ring; 302. Positioning plate; 303. Column; 304. Movable groove; 305. Positioning frame; 306. Electric push rod; 307. Connecting rod. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] Please see Figures 1-9 The present invention provides a technical solution: a welding device for producing rotary joints, including a workbench 1, a rotating seat 101 rotatably connected to the top of the workbench 1, and a reduction motor 105 fixedly installed at the bottom of the workbench 1, and the output end of the reduction motor 105 passes through the workbench 1 and is fixedly connected to the rotating seat 101.

[0045] Also includes:

[0046] The fixed frame 102 is symmetrically installed on the top of the rotating seat 101. The upper part of the two fixed frames 102 is rotatably connected to the rotating shaft 103, and the cylinder 104 is fixedly installed between the two rotating shafts 103.

[0047] Positioning component 2 is disposed above two fixing frames 102, and positioning component 2 includes two support frames 201;

[0048] Two support frames 201 are fixedly installed on the top of two fixed frames 102 respectively. A U-shaped frame 202 is fixedly installed at one end of the two support frames 201 that is close to each other. A positioning block 204 is fixedly installed on the top of one fixed frame 102. A positioning rod 203 is slidably connected inside the positioning block 204. One end of the positioning rod 203 is fixedly connected to one support frame 201.

[0049] The support block 205 is fixedly installed on the top of the other side fixing frame 102. The internal thread of the support block 205 is connected to the stud 206, and one end of the stud 206 is rotatably connected to the other side support frame 201.

[0050] The inner side of the U-shaped frame 202 is symmetrically provided with movable plates 207, and mounting brackets 208 are symmetrically installed on the side of the two movable plates 207 that are close to each other. A positioning roller 209 is rotatably connected between the two mounting brackets 208 on each side. At the same time, an arc top plate 2071 is fixedly installed on the two movable plates 207 below the positioning roller 209. A limit frame 210 is fixedly installed on the side of the two movable plates 207 that are far apart from each other. The limit frame 210 is slidably connected to the U-shaped frame 202.

[0051] A fixing block 211 is symmetrically installed on one side of the U-shaped frame 202, and a bidirectional screw 212 is rotatably connected between the two fixing blocks 211. One end of the bidirectional screw 212 passes through the fixing block 211 on one side and is fixedly installed with a knob. Simultaneously, a movable plate 213 is symmetrically threaded to the outside of the bidirectional screw 212. A sliding groove 214 is symmetrically opened through the U-shaped frame 202 on one side of the bidirectional screw 212, and the movable plate 213 is slidably connected to the sliding groove 214. A fixing rod 216 is fixedly installed on the side of the two movable plates 213 that are far apart. Simultaneously, a connecting frame 215 is slidably connected to the outside of the fixing rod 216, and the connecting frame 215 is fixedly connected to the movable plate 207. A telescopic spring 217 is sleeved on the outside of the fixing rod 216 on one side of the connecting frame 215, and the two ends of the telescopic spring 217 are fixedly connected to the movable plate 213 and the connecting frame 215.

[0052] The two ends of the rotating shaft 103 pass through two fixed brackets 102 and are fixedly installed with turntables 106. The fixed brackets 102 are located on one side of the turntables 106 and fixedly installed with limit blocks 107. Knurled screws 108 are inserted inside the limit blocks 107. At the same time, threaded holes 109 are symmetrically opened on both sides of the turntables 106, and the knurled screws 108 are threadedly connected to the threaded holes 109.

[0053] Example 1: As Figures 1-5 and Figure 9As shown, when welding flanges at the inlet and outlet ends of the rotary joint, the stud 206 can be rotated to move it, thereby moving the two support frames 201. This causes the positioning rod 203 to slide on the positioning block 204, so that the end cap on the positioning rod 203 is in contact with the positioning block 204. At this time, the center between the two support frames 201 is on the same vertical line as the center of the cylinder 104. Then, the flange can be placed on the rotary joint, and the knob can be rotated to rotate the bidirectional screw 212. Alternatively, a drive device can be used to rotate the bidirectional screw 212, which in turn can drive the two moving plates 213 to move simultaneously. The arc-shaped plate 2071 on the movable plate 207 clamps the flange, which can fix the flange. When welding a straight pipe, the two positioning rollers 209 clamp the straight pipe to fix it. When welding a bent pipe, the bent pipe is placed on the rotary joint, and the stud 206 is rotated to move the two support frames 201. The axis of the two positioning rollers 209 is adjusted, and then the bidirectional screw 212 is rotated to make the two positioning rollers 209 simultaneously abut against the bent pipe. Then, the bidirectional screw 212 is rotated to make the two moving plates 213 continue to move. Because the positioning rollers 209 abut against the bent pipe, the moving plates 213... The movement of rod 13 can cause the fixed rod 216 to slide on the connecting frame 215 and stretch the telescopic spring 217. The reaction force of the stretched telescopic spring 217 can stably clamp and fix the bent pipe. The positioning roller 209 has an arc shape in the middle, which can make the outer side of the connecting pipe fit with the middle of the positioning roller 209, avoiding deviation between the pipe and the rotary joint. During welding, the reduction motor 105 can be started to drive the rotating seat 101 to rotate, which facilitates full-circumference welding. After welding one end of the rotary joint, the knurled screw 108 can be rotated to disengage the knurled screw 108 from the threaded hole 109 on one side of the turntable 106. Rotate the cylinder 104 clockwise half a turn to align the knurled screw 108 with the threaded hole 109 on the other side. Then screw the knurled screw 108 into the threaded hole 109 on the other side to position the cylinder 104. This makes it easy to flip the rotary joint after welding one end, avoiding the need to re-fix the rotary joint. This allows for the fixing of flanges or pipes when welding flanges or pipes at the inlet and outlet ends of the rotary joint, avoiding the need to change different fixing structures when facing different welding objects, thus expanding the applicability of welding. At the same time, when welding pipes, it is possible to weld bends with different degrees of curvature.

[0054] An L-shaped frame 218 is fixedly installed on one side of the top of the U-shaped frame 202. Movable rods 219 are symmetrically slidably connected to the upper part of the inside of the L-shaped frame 218. A movable frame 220 is fixedly installed at the bottom end of the two movable rods 219. A rubber roller 221 is rotatably connected to the inner side of the movable frame 220. A return spring 222 is sleeved on the outside of the two movable rods 219 above the movable frame 220. The two ends of the return spring 222 are fixedly connected to the movable frame 220 and the L-shaped frame 218 respectively.

[0055] Two movable rods 219 are fixedly mounted on an upper part of the L-shaped frame 218 with a mounting plate 223. A sliding plate 225 is slidably connected to the two movable rods 219 above the mounting plate 223. A support spring 224 is sleeved between the sliding plate 225 and the mounting plate 223 on the two movable rods 219. The two ends of the support spring 224 are fixedly connected to the sliding plate 225 and the mounting plate 223 respectively.

[0056] L-shaped plates 229 are symmetrically installed on the top of the movable plate 213 on one side, and guide wheels 230 are rotatably connected between the two L-shaped plates 229. A steel wire rope 226 is fixedly installed on one side of the bottom of the sliding plate 225. At the same time, a through hole is opened on the top of the L-shaped frame 218 below the steel wire rope 226. The end of the steel wire rope 226 away from the sliding plate 225 passes through the through hole and is fixedly installed with a connecting column 228. The connecting column 228 is fixedly connected to the L-shaped frame 218, and the steel wire rope 226 is rotatably connected to the guide wheel 230. At the same time, a guide column 227 is rotatably connected to the inner side of the L-shaped frame 218 above the guide wheel 230.

[0057] A vertical plate 231 is fixedly installed at the bottom of the sliding plate 225 on one side of the wire rope 226, and the vertical plate 231 is slidably connected to the L-shaped frame 218. A rack 232 is fixedly installed on the lower side of one side of the vertical plate 231. Meanwhile, one end of the rubber roller 221 passes through the movable frame 220 through a rotating shaft and is fixedly installed with a rotating gear 233. The rack 232 is meshed with the rotating gear 233.

[0058] Example 2: Figure 3 and Figures 6-7As shown, when fixing the bent pipe, the positioning roller 209, after contacting the bent pipe, continues to move, which can drive the L-shaped plate 229 to move. After the L-shaped plate 229 moves, it can push the wire rope 226 to bend through the guide wheel 230. If the wire rope 226 bends after one end is fixed to the connecting column 228, it can pull the sliding plate 225 to move downward. The elastic coefficient of the support spring 224 is much greater than the elastic coefficient of the return spring 222. After the sliding plate 225 moves downward, it can push the mounting plate 223 to move downward through the support of the support spring 224, so that the two movable rods 219 move downward. After the movable rods 219 move downward, the rubber roller 221 on the moving frame 220 abuts against the outside of the bent pipe, so that the bent pipe can be further positioned. For different degrees of bending... When the bent pipe is fixed, the fixing effect can be guaranteed. After the rubber roller 221 abuts against the bent pipe, it continues to drive the bidirectional screw 212 to rotate, so that the moving plate 213 moves a small displacement. At this time, the rubber roller 221 abuts against the bent pipe, the moving frame 220 and the movable rod 219 no longer move. The moving plate 213 continues to move, so that the sliding plate 225 can slide on the movable rod 219 to compress the support spring 224, so that the upright plate 231 can be driven to move down. During the downward movement of the upright plate 231, the moving frame 220 no longer moves. The rubber roller 221 can be driven to rotate counterclockwise through the meshing of the rack 232 and the rotating gear 233, which can drive the bent pipe to move downward. This ensures that one end of the bent pipe fits tightly with one end of the rotary joint, avoids gaps, and improves the welding quality.

[0059] Fixing component 3 is located on the outside of cylinder 104;

[0060] The fixing assembly 3 includes a rotating ring 301 rotatably connected to the upper part of the cylinder 104. Four sets of positioning plates 302 are equidistantly slidably connected to the upper and lower sides of the rotating ring 301 inside the cylinder 104. A column rod 303 is fixedly installed between each pair of positioning plates 302. Four movable slots 304 are symmetrically opened through the top axis of the rotating ring 301. The column rod 303 is slidably connected to the movable slots 304. Positioning frames 305 are symmetrically installed on the lower side of the rotating ring 301 outside the cylinder 104. An electric push rod 306 is hinged between two positioning frames 305. A connecting rod 307 is hinged to the movable end of the electric push rod 306. The top of the connecting rod 307 is rotatably connected to the rotating ring 301.

[0061] Example 3: Figures 1-2 and Figure 9As shown, when fixing the rotary joint, the rotary joint is placed in the cylinder 104. The inner diameter of the cylinder 104 is relatively large, and the rotary joint can still be directly removed after the welded bends at both ends are welded. During the placement of the rotary joint, the end face of the rotary joint can be positioned with the help of a laser pointer, so that the rotary joint is located in the middle of the cylinder 104. Then, the electric push rod 306 can be activated to extend, so that the rotating ring 301 can be rotated through the connecting rod 307. After the rotating ring 301 rotates, it is connected to the column rod 303 through the movable groove 304, so that the four sets of positioning plates 302 can approach at the same time. The four sets of positioning plates 302 can clamp the rotary joint, which facilitates the fixing of the rotary joint and facilitates subsequent welding.

[0062] Working principle: When using this loss-reducing, explosion-proof, and pressure-relief transformer, firstly, according to... Figures 1-9As shown, when welding flanges at the inlet and outlet ends of the rotary joint, the stud 206 can be rotated to move it, thereby moving the two support frames 201. This causes the positioning rod 203 to slide on the positioning block 204, so that the end cap on the positioning rod 203 is in contact with the positioning block 204. At this time, the center between the two support frames 201 is on the same vertical line as the center of the cylinder 104. Then, the flange can be placed on the rotary joint, and the knob can be rotated to rotate the bidirectional screw 212. Alternatively, a drive device can be used to rotate the bidirectional screw 212. Rotating the 12th screw causes the two movable plates 213 to move simultaneously, allowing the arc-shaped plate 2071 on the movable plate 207 to clamp the flange, thus fixing the flange. When welding a straight pipe, the two positioning rollers 209 clamp the straight pipe, thus fixing it. When welding a bent pipe, the bent pipe is placed on the rotary joint, and rotating the stud 206 moves the two support frames 201, adjusting the axis of the two positioning rollers 209. Then, the bidirectional screw 212 rotates, causing the two positioning rollers 209 to simultaneously abut against the bent pipe. Next, continue rotating the bidirectional screw 212, causing the two moving plates 213 to continue moving. Since the positioning roller 209 abuts against the bent pipe, the movement of the moving plates 213 can drive the fixed rod 216 to slide on the connecting frame 215 and stretch the telescopic spring 217. The reaction force of the stretched telescopic spring 217 can stably clamp and fix the bent pipe. Furthermore, the central part of the positioning roller 209 is arc-shaped, allowing the outer side of the connecting pipe to fit against the central part of the positioning roller 209, preventing deviation between the pipe and the rotary joint. During welding, a deceleration mechanism can be activated. The motor 105 drives the rotating seat 101 to rotate, which facilitates full-circumference welding. After welding one end of the rotary joint, the knurled screw 108 can be rotated to disengage the knurled screw 108 from the threaded hole 109 on one side of the turntable 106. The cylinder 104 can be rotated clockwise half a circle to align the knurled screw 108 with the threaded hole 109 on the other side. Then, the knurled screw 108 is screwed into the threaded hole 109 on the other side to position the cylinder 104. This makes it easy to flip the rotary joint after welding one end, avoiding the need to re-fix the rotary joint.

[0063] When fixing the bend, the positioning roller 209, after contacting the bend, continues to move, which can drive the L-shaped plate 229 to move. After the L-shaped plate 229 moves, it can push the wire rope 226 to bend through the guide wheel 230. If the wire rope 226 bends after one end is fixed to the connecting column 228, it can pull the sliding plate 225 to move downward. The elastic coefficient of the support spring 224 is much greater than the elastic coefficient of the return spring 222. After the sliding plate 225 moves downward, it can push the mounting plate 223 to move downward through the support of the support spring 224, so that the two movable rods 219 As the movable rod 219 moves downward, the rubber roller 221 on the movable frame 220 abuts against the outside and top of the bent pipe, allowing for further positioning of the bent pipe. This ensures a secure fixation effect when fixing bent pipes with different degrees of curvature. After the rubber roller 221 abuts against the bent pipe, it continues to drive the bidirectional screw 212 to rotate, causing the movable plate 213 to move a small displacement. At this point, the rubber roller 221 abuts against the bent pipe, the movable frame 220 and the movable rod 219 no longer move, and the movable plate 213 continues to move, pulling the sliding plate 225 on the movable rod 219. The sliding compression support spring 224 on the 19th slides down, allowing the upright plate 231 to move downwards. During the downward movement of the upright plate 231, the moving frame 220 stops moving. The engagement of the rack 232 and the rotating gear 233 drives the rubber roller 221 to rotate counterclockwise, which in turn drives the bent tube to move downwards. This ensures that one end of the bent tube fits tightly with one end of the rotary joint, preventing gaps and improving welding quality. When fixing the rotary joint, it is placed inside the cylinder 104. The inner diameter of the cylinder 104 is relatively large, allowing the bent tubes to remain welded to both ends of the rotary joint. The rotary joint can be directly removed. During the placement process, a laser pointer can be used to position the end face of the rotary joint, so that the rotary joint is located in the middle of the cylinder 104. Then, the electric push rod 306 can be activated to extend, so that the rotating ring 301 can be rotated through the connecting rod 307. After the rotating ring 301 rotates, it is connected to the column rod 303 through the movable groove 304, so that the four sets of positioning plates 302 can be brought close at the same time. The four sets of positioning plates 302 can clamp the rotary joint, which facilitates the fixing of the rotary joint and facilitates subsequent welding.

[0064] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0065] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A welding device for producing rotary joints, comprising a workbench (1), a rotating seat (101) rotatably connected to the top of the workbench (1), and a geared motor (105) fixedly installed at the bottom of the workbench (1), and the output end of the geared motor (105) passing through the workbench (1) and fixedly connected to the rotating seat (101). Its features are, Also includes: The fixed frame (102) is symmetrically installed on the top of the rotating seat (101). The upper interior of each of the two fixed frames (102) is rotatably connected to a rotating shaft (103), and a cylinder (104) is fixedly installed between the two rotating shafts (103). The positioning component (2) is disposed above two fixed frames (102), and the positioning component (2) includes two support frames (201). The fixing component (3) is disposed on the outside of the cylinder (104); Two support frames (201) are fixedly installed on the top of two fixed frames (102), and a U-shaped frame (202) is fixedly installed at one end of the two support frames (201) that are close to each other. A positioning block (204) is fixedly installed on the top of one fixed frame (102), and a positioning rod (203) is slidably connected inside the positioning block (204). One end of the positioning rod (203) is fixedly connected to one support frame (201). A support block (205) is fixedly installed on the top of the other side fixing frame (102). The support block (205) is internally threaded with a stud (206), and one end of the stud (206) is rotatably connected to the other side support frame (201). The U-shaped frame (202) has symmetrical movable plates (207) arranged on its inner side, and mounting brackets (208) are symmetrically installed on the side of the two movable plates (207) that are close to each other. A positioning roller (209) is rotatably connected between the two mounting brackets (208) on each side. At the same time, an arc top plate (2071) is fixedly installed below the positioning roller (209) of the two movable plates (207). A limit frame (210) is fixedly installed on the side of the two movable plates (207) that are far apart from each other. The limit frame (210) is slidably connected to the U-shaped frame (202). A fixing block (211) is symmetrically installed on one side of the U-shaped frame (202), and a double-ended screw (212) is rotatably connected between the two fixing blocks (211). One end of the double-ended screw (212) passes through one fixing block (211) and is fixedly installed with a knob. At the same time, a movable plate (213) is symmetrically threaded to the outside of the double-ended screw (212). The U-shaped frame (202) is symmetrically provided with a sliding groove (214) on one side of the double-ended screw (212), and the movable plate (213) is connected to... The sliding groove (214) is slidably connected, and a fixed rod (216) is fixedly installed on the side of the two moving plates (213) that are far apart. At the same time, a connecting frame (215) is slidably connected to the outside of the fixed rod (216), and the connecting frame (215) is fixedly connected to the moving plate (207). A telescopic spring (217) is sleeved on the outside of the fixed rod (216) on one side of the connecting frame (215), and the two ends of the telescopic spring (217) are fixedly connected to the moving plate (213) and the connecting frame (215). An L-shaped frame (218) is fixedly installed on one side of the top of the U-shaped frame (202), and movable rods (219) are symmetrically slidably connected to the upper part of the L-shaped frame (218). A movable frame (220) is fixedly installed at the bottom end of the two movable rods (219). Meanwhile, a rubber roller (221) is rotatably connected to the inner side of the movable frame (220). A return spring (222) is sleeved on the outside of the two movable rods (219) above the movable frame (220), and the two ends of the return spring (222) are fixedly connected to the movable frame (220) and the L-shaped frame (218) respectively. The fixing component (3) includes a rotating ring (301) rotatably connected to the upper part of the cylinder (104), and four sets of positioning plates (302) are equidistantly connected to the upper and lower sides of the rotating ring (301) inside the cylinder (104). A column rod (303) is fixedly installed between each pair of positioning plates (302). At the same time, four movable slots (304) are symmetrically opened through the top axis of the rotating ring (301). The column rod (303) is slidably connected to the movable slot (304). A positioning frame (305) is symmetrically installed on the lower side of the rotating ring (301) outside the cylinder (104). An electric push rod (306) is hinged between two positioning frames (305). A connecting rod (307) is hinged to the movable end of the electric push rod (306). The top of the connecting rod (307) is rotatably connected to the rotating ring (301).

2. The welding apparatus for producing rotary joints according to claim 1, characterized in that: The two movable rods (219) are fixedly mounted on the outside of the L-shaped frame (218) with mounting plates (223), and the two movable rods (219) are slidably connected to the outside of the mounting plates (223) with sliding plates (225). Supporting springs (224) are sleeved between the sliding plates (225) and the mounting plates (223) of the two movable rods (219), and the two ends of the supporting springs (224) are fixedly connected to the sliding plates (225) and the mounting plates (223) respectively.

3. The welding apparatus for producing rotary joints according to claim 2, characterized in that: On one side of the movable plate (213), L-shaped plates (229) are symmetrically installed on the top, and guide wheels (230) are rotatably connected between the two L-shaped plates (229). A steel wire rope (226) is fixedly installed on one side of the bottom of the sliding plate (225). At the same time, a through hole is opened on the top of the L-shaped frame (218) below the steel wire rope (226). The end of the steel wire rope (226) away from the sliding plate (225) passes through the through hole and is fixedly installed with a connecting column (228). The connecting column (228) is fixedly connected to the L-shaped frame (218), and the steel wire rope (226) is rotatably connected to the guide wheel (230). At the same time, a guide column (227) is rotatably connected to the inner side of the L-shaped frame (218) above the guide wheel (230).

4. The welding apparatus for producing rotary joints according to claim 3, characterized in that: The bottom of the sliding plate (225) is fixedly installed with a vertical plate (231) on one side of the wire rope (226), and the vertical plate (231) is slidably connected to the L-shaped frame (218). A rack (232) is fixedly installed on the lower side of one side of the vertical plate (231). Meanwhile, one end of the rubber roller (221) passes through the movable frame (220) through a rotating shaft and is fixedly installed with a rotating gear (233). The rack (232) is meshed with the rotating gear (233).

5. The welding apparatus for producing rotary joints according to claim 1, characterized in that: The two ends of the rotating shaft (103) pass through two fixed frames (102) and are fixedly installed with turntables (106). The fixed frames (102) are fixedly installed with limit blocks (107) on one side of the turntables (106). Knurled screws (108) are inserted inside the limit blocks (107). At the same time, threaded holes (109) are symmetrically opened on both sides of the turntables (106), and the knurled screws (108) are threadedly connected to the threaded holes (109).

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