Metal elbow welding equipment

Abstract

The invention discloses metal elbow welding equipment, and relates to the technical field of elbow welding, the metal elbow welding equipment comprises a working table, supporting frames are symmetrically mounted at the bottom of the working table, a welding arm is arranged at the top of the working table, the metal elbow welding equipment further comprises a rubber pad, a supporting rod is fixedly mounted on the other side of the top of the working table, and the supporting rod is arranged on one side of the upper portion of the rubber pad; the positioning assembly is arranged on the top and one side of the rubber pad, the positioning assembly comprises a fixing plate and a fixing assembly, the fixing assembly is arranged on the upper portion of one side of the rubber pad, and the fixing plate is fixedly installed on the portion, located on one side of the rubber pad, of the top of the workbench; according to the elbow positioning device, the elbows can be accurately positioned, the centers of the elbows with different sizes and different bending angles can coincide with the rotating axis of a straight pipe, deviation generated when the elbows and the straight pipe are welded can be avoided, the welding quality is improved, operation of workers is facilitated, and convenience and practicability are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of elbow welding, and specifically relates to a metal elbow welding device. Background Art

[0002] An elbow is a commonly used connecting fitting in pipeline installation, used for connecting at the pipeline turning point to change the direction of the pipeline.

[0003] For example, a dust removal pipeline elbow welding device with the publication number of CN119077194A rotates and installs a support plate on the bottom plate, places the dust removal pipeline elbow on the support plate, rotates and installs a first slide bar on the bottom plate, installs a second slide bar at the end of the first slide bar, installs a third slide bar at the end of the second slide bar, installs a fixing ring at the end of the third slide bar, and installs a welding head in the fixing ring. The angle of the dust removal pipeline elbow and the welding head can be adjusted by rotating the support plate, the first slide bar and the third slide bar, so as to ensure that the dust removal pipeline elbow and the welding head can be aligned. The height of the welding head can also be adjusted by the third slide bar to ensure that the dust removal pipeline elbow and the welding head are coaxial. And the welding head can be pushed by the second slide bar to ensure that the dust removal pipeline elbow and the welding head are in contact during welding. The position of the welding head is fixed by the first positioning structure and the second positioning structure, so as to ensure the welding quality and prevent the welding head from moving during welding. The two ends of the dust removal pipeline elbow can also be welded simultaneously to improve work efficiency. However, in actual use, the elbow is pressed and fixed by a pressing plate. The elbow is placed on the support plate, and it cannot be ensured that the elbow is placed exactly at the center of the support plate. And during the fixing process of elbows with different sizes and lengths, it is not convenient to accurately position the elbows. And when fixing elbows with different bending degrees, the axis of the elbow cannot coincide with the axis of the support plate. After subsequent welding docking, it is very difficult for the straight pipe to be aligned with the two ends of the elbow after rotation, and a large amount of working time will be spent on adjusting the position of the straight pipe. The fixing process is not convenient. When positioning elbows with different sizes and different bending degrees, the positioning accuracy cannot be guaranteed, and it is not convenient for subsequent docking of the straight pipe and the elbow, and there are certain use defects.

[0004] Therefore, we propose a metal elbow welding device to solve the problems raised above. Summary of the Invention

[0005] The purpose of the present invention is to provide a metal elbow welding device to solve the problem in the above background art that when fixing elbows with different bending degrees, the axis of the elbow cannot coincide with the axis of the support plate. After subsequent welding docking, it is very difficult for the straight pipe to be aligned with the two ends of the elbow after rotation, and a large amount of working time will be spent on adjusting the position of the straight pipe. The fixing process is not convenient.

[0006] To achieve the above object, the present invention provides the following technical solution: A metal elbow welding device, including a workbench, support frames are symmetrically installed at the bottom of the workbench, and a welding arm is arranged on the top of the workbench; It further includes: A rubber pad, fixedly installed on the other side of the top of the workbench, a support rod is arranged on one side above the rubber pad, and a rotating sleeve is rotatably connected to the lower part of the outside of the support rod; A positioning component, arranged on the top and one side of the rubber pad, the positioning component includes a fixing plate; A fixing component, arranged above one side of the rubber pad; A fixing plate, fixedly installed on the top of the workbench on the side of the rubber pad, sliding rods are symmetrically and slidably connected above the inside of the fixing plate, telescopic springs are sleeved on the outside of both sliding rods, one end of each telescopic spring is fixedly connected to the fixing plate, the other end of each telescopic spring is fixedly installed with a fixing block, and the fixing block is fixedly connected to the sliding rod; Positioning columns, fixedly installed at one end of the two sliding rods, limiting rods are fixedly installed below one side of the two positioning columns, both limiting rods are slidably connected to the fixing plate, an electric push rod is fixedly installed above one side of the fixing plate, the movable end of the electric push rod is fixedly installed with a movable frame, and guide rods are symmetrically installed on the side of the movable frame close to the fixing plate, and both guide rods are slidably connected to the fixing plate.

[0007] Preferably, an installation rod is fixedly installed on the side of the movable frame away from the fixing plate, a connecting piece is fixedly installed at the end of the installation rod away from the movable frame, and a limiting column is fixedly installed at the bottom of the connecting piece.

[0008] By adopting the above technical solution, the elbow can be fixed.

[0009] Preferably, steel wires are fixedly installed above one side of the two positioning columns, the end of each steel wire away from the positioning column is fixedly connected to the connecting piece, columns are symmetrically installed on the top of the rubber pad on the side of the limiting column, guide wheels are rotatably connected to the tops of both columns, and the steel wires are rotatably connected to the guide wheels.

[0010] By adopting the above technical solution, the movement of the connecting piece can pull the positioning column to move.

[0011] Preferably, rotating frames are symmetrically and rotatably connected above the outside of the support rod, rubber ropes are fixedly installed on one side of both rotating frames, and the end of each rubber rope away from the rotating frame is fixedly connected to the connecting piece.

[0012] By adopting the above technical solution, the rubber rope can pull the rotating frame to rotate.

[0013] Preferably, limiting frames are fixedly installed on one side of the two rotating frames away from the support rod, adjusting plates are slidably connected to one side inside the two limiting frames, and limiting plates are fixedly installed on one side of the two adjusting plates.

[0014] By adopting the above technical solution, the rotation of the rotating frame can drive the rotation of the adjusting plate.

[0015] Preferably, a moving frame is fixedly installed below the rotating sleeve on the outside of the support rod, a positioning frame is slidably connected to one side outside the moving frame, the positioning frame is fixedly connected to the rubber pad, and a positioning screw is threadedly connected to the upper part inside the positioning frame.

[0016] By adopting the above technical solution, it is convenient to position the moving frame.

[0017] Preferably, the fixing assembly includes a mounting frame fixedly installed on one side outside the rotating sleeve, a U-shaped frame is slidably connected to the outside of the mounting frame, a screw rod is threadedly connected to one side inside the U-shaped frame, the bottom end of the screw rod is rotatably connected to an arc-shaped plate, and positioning rods are symmetrically installed on both sides of the top of the arc-shaped plate.

[0018] By adopting the above technical solution, it is convenient to fix the straight pipe.

[0019] Preferably, two groups of moving rods are symmetrically and slidably connected to both sides inside the U-shaped frame, one end of each group of two moving rods is fixedly installed with a moving plate, a return spring is sleeved on one side outside the two moving rods, and both ends of the return spring are fixedly connected to the U-shaped frame and the moving rod respectively.

[0020] By adopting the above technical solution, the moving plate can automatically reset after moving.

[0021] Preferably, arc-shaped frames are hinged to the lower sides of the two moving plates close to each other, torsion springs are arranged at the joints of the arc-shaped frames and the moving plates, a plurality of rubber bumps are fixedly installed on the sides of the two arc-shaped frames close to each other and the bottom of the arc-shaped plate, pull ropes are symmetrically installed on the upper sides of the two moving plates close to each other, and the ends of the pull ropes away from the moving plates are fixedly connected to the arc-shaped plate.

[0022] By adopting the above technical solution, the movement of the arc-shaped plate can drive the movement of the arc-shaped frame.

[0023] Compared with the prior art, the beneficial effects of the present invention are: for this metal elbow welding equipment, a positioning component is provided on the top and one side of the rubber pad, so that the elbow can be accurately positioned, and the centers of elbows with different sizes and different bending angles can coincide with the axis of rotation of the straight pipe, which can avoid offset during the welding of the elbow and the straight pipe, improve the welding quality, facilitate the operation of the staff, and enhance the convenience and practicality; 1. A positioning component is provided at the top and one side of the rubber pad. When fixing the elbow, place the elbow between the two positioning posts and the limiting post. Then, start the electric push rod to drive the movable frame to move. After the movable frame moves, it can drive the connecting piece to move, making the limiting post approach the elbow. During the movement of the connecting piece, it can pull the steel wire rope to move, causing the steel wire rope to rotate on the guide wheel. Furthermore, it can pull the two positioning posts closer to the elbow. During the movement of the positioning posts, they drive the sliding rod and the limiting rod to move, and can stretch the telescopic spring. Thus, the two positioning posts and the limiting post clamp the elbow to position the elbow. And during the movement of the connecting piece, it can drive the rotating frame to rotate through two rubber ropes. After the connecting piece moves, it first pulls the rubber rope, and then adapts to elbows of different sizes through the elasticity of the rubber rope. Before fixing the elbow, move the limiting plate according to the size of the elbow. After the rotating frame rotates, the limiting plate can be rotated. Through the synchronous rotation of the two limiting plates, the two ends of the elbow can be clamped, which can prevent the elbow from shifting; 2. During the process of fixing the elbow, the two limiting plates can clamp the two ends of the elbow. After the limiting plates rotate, the staff can move the movable frame, making the movable frame slide on the positioning frame. Thus, it can drive the support rod to move. The movement of the support rod can drive the rotating frame to rotate. After the rotating frame rotates, the two limiting plates are in contact with the two ends of the elbow. At this time, the axis of the elbow coincides with the support rod. The positioning screw can be tightened to position the movable frame, and then the support rod is positioned. Then, the limiting plate can be manually rotated. After the limiting plate rotates, it drives the rotating frame to rotate. After the rotating frame rotates, the limiting plate can be moved, making the limiting plate no longer in contact with the elbow, which is convenient for the subsequent butt joint of the straight pipe and the elbow. And the rotation axis of the subsequent fixing component coincides with the support rod. Thus, it is convenient for the axis of the subsequent straight pipe to coincide with the axis of the elbow, which is convenient for accurately positioning elbows with different bending angles; 3. After the elbow is fixed, the staff can dock the straight pipe with one end of the elbow. Then, the U-shaped frame can be rotated so that the rotating sleeve slides on the support rod. After that, the U-shaped frame can be moved so that the arc plate is located directly above the straight pipe. Then, the screw is rotated to drive the arc plate to move downward. During the downward movement of the arc plate, the two moving plates can be pulled closer by the pulling rope, so that the moving rod slides on the U-shaped frame and compresses the return spring. When the arc plate coincides with the axis of the arc-shaped frame, when fixing the straight pipe, the arc plate fits with the top of the straight pipe, and the two arc-shaped frames fit with the side of the straight pipe, so that the straight pipe can be fixed. Although the mounting frame is movably connected to the U-shaped frame, by pressing down the straight pipe with the arc plate, the straight pipe can be firmly fixed by means of the friction force of the rubber pad. Then, the elbow and the straight pipe are welded by the welding arm. After welding, the straight pipe and the elbow can be removed and turned over, which is convenient for welding the other side of the connection. At this time, there is no need to fix the elbow and the straight pipe anymore, which facilitates the staff to fix the straight pipe, makes the rotation axis of the U-shaped frame coincide with the axis of the elbow, and improves the practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of a partial structure of the present invention; Figure 3 is a schematic diagram of the structure of the positioning component of the present invention; Figure 4 is the present invention Figure 3 magnified schematic diagram of area A in; Figure 5 is the present invention Figure 3 magnified schematic diagram of area B in; Figure 6 is the present invention Figure 3 magnified schematic diagram of area C in; Figure 7 is a schematic diagram of the support rod structure of the present invention; Figure 8 is the present invention Figure 2 magnified schematic diagram of area D in; Figure 9 is a schematic diagram of the structure of the fixing component of the present invention.

[0025] In the figure: 1. Workbench; 101. Support frame; 102. Welding arm; 103. Rubber pad; 104. Support rod; 105. Rotating sleeve; 106. Moving frame; 107. Positioning frame; 108. Positioning screw; 2. Positioning component; 201. Fixed plate; 202. Sliding rod; 203. Telescopic spring; 204. Fixed block; 205. Positioning column; 206. Limiting rod; 207. Electric push rod; 208. Guide rod; 209. Movable frame; 210. Mounting rod; 211. Connecting piece; 212. Limiting column; 213. Steel wire rope; 214. Column; 215. Guide wheel; 216. Rotating frame; 217. Rubber rope; 218. Limiting frame; 219. Adjusting plate; 220. Limiting plate; 3. Fixing component; 301. Mounting frame; 302. U-shaped frame; 303. Screw; 304. Arc-shaped plate; 305. Positioning rod; 306. Moving rod; 307. Return spring; 308. Moving plate; 309. Pulling rope; 310. Arc-shaped frame. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] Please refer to Figures 1-9 , the present invention provides a technical solution: a metal elbow welding device, including a workbench 1, support frames 101 are symmetrically installed at the bottom of the workbench 1, and a welding arm 102 is arranged on the top of the workbench 1; It further includes: A rubber pad 103, fixedly installed on the other side of the top of the workbench 1, a support rod 104 is arranged on one side above the rubber pad 103, and a rotating sleeve 105 is rotatably connected to the lower part of the outside of the support rod 104; A positioning component 2, arranged on the top and one side of the rubber pad 103, and the positioning component 2 includes a fixed plate 201; The fixed plate 201 is fixedly installed on the top of the workbench 1 on one side of the rubber pad 103. Two sliding rods 202 are symmetrically and slidably connected to the upper part of the inside of the fixed plate 201. One side of the outside of the two sliding rods 202 is sleeved with a telescopic spring 203. One end of the telescopic spring 203 is fixedly connected to the fixed plate 201, and the other end of the telescopic spring 203 is fixedly installed with a fixed block 204. Moreover, the fixed block 204 is fixedly connected to the sliding rod 202; The positioning posts 205 are fixedly installed at one end of the two sliding rods 202. Limit rods 206 are fixedly installed below one side of the two positioning posts 205, and both of the two limit rods 206 are slidably connected to the fixing plate 201. An electric push rod 207 is fixedly installed above one side of the fixing plate 201. At the same time, a movable frame 209 is fixedly installed at the movable end of the electric push rod 207. Guide rods 208 are symmetrically installed on one side of the movable frame 209 close to the fixing plate 201, and both of the two guide rods 208 are slidably connected to the fixing plate 201; An installation rod 210 is fixedly installed on the side of the movable frame 209 away from the fixing plate 201. A connecting piece 211 is fixedly installed at one end of the installation rod 210 away from the movable frame 209, and a limit post 212 is fixedly installed at the bottom of the connecting piece 211; Steel wire ropes 213 are fixedly installed above one side of the two positioning posts 205. One end of the steel wire rope 213 away from the positioning post 205 is fixedly connected to the connecting piece 211. Columns 214 are symmetrically installed on one side of the top of the rubber pad 103 where the limit post 212 is located. At the same time, guide wheels 215 are rotatably connected to the tops of the two columns 214, and the steel wire rope 213 is rotatably connected to the guide wheel 215; Rotating frames 216 are symmetrically rotatably connected above the outer part of the support rod 104. Rubber ropes 217 are fixedly installed on one side of the two rotating frames 216, and one end of each of the two rubber ropes 217 away from the rotating frame 216 is fixedly connected to the connecting piece 211; Limit frames 218 are fixedly installed on the side of the two rotating frames 216 away from the support rod 104. Adjusting plates 219 are slidably connected to one side inside the two limit frames 218, and limit plates 220 are fixedly installed on one side of the two adjusting plates 219.

[0028] Example 1: As Figures 1-5As shown in the figure, a positioning component 2 is provided at the top and one side of the rubber pad 103. When fixing the elbow, place the elbow between the two positioning posts 205 and the limiting post 212. Then, start the electric push rod 207 to drive the movable frame 209 to move. After the movable frame 209 moves, it can drive the connecting piece 211 to move, making the limiting post 212 approach the elbow. During the movement of the connecting piece 211, it can pull the steel wire rope 213 to move, so that the steel wire rope 213 rotates on the guide wheel 215. Furthermore, it can pull the two positioning posts 205 to approach the elbow. During the movement of the positioning posts 205, the sliding rod 202 and the limiting rod 206 are driven to move, and the telescopic spring 203 can be stretched. Thus, the two positioning posts 205 and the limiting post 212 clamp the elbow to position the elbow. During the movement of the connecting piece 211, it can pull the rotating frame 216 to rotate through the two rubber ropes 217. After the connecting piece 211 moves, it can first pull the rubber rope 217, and then adapt to elbows of different sizes through the elasticity of the rubber rope 217. Before fixing the elbow, move the limiting plate 220 according to the size of the elbow. After the rotating frame 216 rotates, the limiting plate 220 can be rotated. Through the synchronous rotation of the two limiting plates 220, the two ends of the elbow can be clamped, and the elbow can be prevented from shifting.

[0029] A movable frame 106 is fixedly installed below the rotating sleeve 105 on the outside of the support rod 104. One side of the outside of the movable frame 106 is slidably connected with a positioning frame 107. The positioning frame 107 is fixedly connected with the rubber pad 103. At the same time, a positioning screw 108 is threadedly connected above the inside of the positioning frame 107.

[0030] Embodiment 2: As Figures 2-3 and Figures 6-7 As shown in the figure, during the process of fixing the elbow, the two limiting plates 220 can clamp the two ends of the elbow. After the limiting plates 220 rotate, the staff can move the movable frame 106, making the movable frame 106 slide on the positioning frame 107. Thus, the support rod 104 can be driven to move. The movement of the support rod 104 can drive the rotating frame 216 to rotate. After the rotating frame 216 rotates, the two limiting plates 220 are attached to the two ends of the elbow. At this time, the axis of the elbow coincides with the support rod 104. The positioning screw 108 can be tightened to position the movable frame 106, and then the support rod 104 can be positioned. Then, the limiting plate 220 can be manually rotated. After the limiting plate 220 rotates, it drives the rotating frame 216 to rotate. After the rotating frame 216 rotates, the limiting plate 220 can be moved, making the limiting plate 220 no longer attached to the elbow, which is convenient for the subsequent butt joint of the straight pipe and the elbow. And the rotation axis of the subsequent fixing component 3 coincides with the support rod 104. Furthermore, the axis of the subsequent straight pipe is convenient to coincide with the axis of the elbow, which is convenient for accurately positioning elbows with different bending angles.

[0031] The fixing component 3 is arranged above one side of the rubber pad 103; The fixing component 3 includes a mounting frame 301 fixedly installed on the outer side of one side of the rotating sleeve 105. A U-shaped frame 302 is slidably connected to the outside of the mounting frame 301. A screw rod 303 is threadedly connected to the inner side of one side of the U-shaped frame 302. The bottom end of the screw rod 303 is rotatably connected to an arc-shaped plate 304. At the same time, positioning rods 305 are symmetrically installed on both sides of the top of the arc-shaped plate 304; Two groups of moving rods 306 are symmetrically and slidably connected to both sides of the inside of the U-shaped frame 302. One end of each group of two moving rods 306 is fixedly installed with a moving plate 308. A return spring 307 is sleeved on the outer side of each of the two moving rods 306. At the same time, both ends of the return spring 307 are fixedly connected to the U-shaped frame 302 and the moving rod 306 respectively; Arc-shaped frames 310 are hinged to the lower sides of the two moving plates 308 close to each other. A torsion spring is arranged at the connection between the arc-shaped frame 310 and the moving plate 308. A number of rubber bumps are fixedly installed on the sides of the two arc-shaped frames 310 close to each other and the bottom of the arc-shaped plate 304. At the same time, pull ropes 309 are symmetrically installed on the upper sides of the two moving plates 308 close to each other. Moreover, one end of the pull rope 309 away from the moving plate 308 is fixedly connected to the arc-shaped plate 304.

[0032] Example 3: As Figures 1-2 and Figures 8-9 shown, after the elbow is fixed, the staff can dock the straight pipe with one end of the elbow. Then, the U-shaped frame 302 can be rotated to make the rotating sleeve 105 slide on the support rod 104. Then, the U-shaped frame 302 can be moved to make the arc-shaped plate 304 located directly above the straight pipe. Then, the screw rod 303 is rotated to drive the arc-shaped plate 304 to move downward. During the downward movement of the arc-shaped plate 304, the two moving plates 308 can be pulled closer to each other through the pull rope 309, so that the moving rods 306 slide on the U-shaped frame 302 and compress the return spring 307. The axes of the arc-shaped plate 304 and the arc-shaped frame 310 coincide. When fixing the straight pipe, the arc-shaped plate 304 fits with the top of the straight pipe, and the two arc-shaped frames 310 fit with the side of the straight pipe, so that the straight pipe can be fixed. Although the mounting frame 301 is movably connected to the U-shaped frame 302, by pressing down the arc-shaped plate 304 against the straight pipe, the straight pipe can be firmly fixed by means of the friction of the rubber pad 103. Then, the elbow and the straight pipe are welded by the welding arm 102. After welding, the straight pipe and the elbow can be taken off and turned over to facilitate welding the other side of the connection. At this time, it is not necessary to fix the elbow and the straight pipe again, which facilitates the staff to fix the straight pipe, makes the rotation axis of the U-shaped frame 302 coincide with the axis of the elbow, and improves the practicability.

[0033] Working principle: When using this metal elbow welding equipment, first, according to Figures 1-9As shown in the figure, a positioning component 2 is provided on the top and one side of the rubber pad 103. When fixing the elbow, place the elbow between the two positioning posts 205 and the limiting post 212. Then, start the electric push rod 207 to drive the movable frame 209 to move. After the movable frame 209 moves, it can drive the connecting piece 211 to move, so that the limiting post 212 approaches the elbow. During the movement of the connecting piece 211, it can pull the steel wire rope 213 to move, so that the steel wire rope 213 rotates on the guide wheel 215. Furthermore, it can pull the two positioning posts 205 to approach the elbow. During the movement of the positioning posts 205, they drive the sliding rod 202 and the limiting rod 206 to move, and can stretch the telescopic spring 203. Thus, the two positioning posts 205 and the limiting post 212 clamp the elbow to position the elbow. During the movement of the connecting piece 211, it can pull the rotating frame 216 to rotate through the two rubber ropes 217. After the connecting piece 211 moves, it can first pull the rubber rope 217, and then adapt to elbows of different sizes through the elasticity of the rubber rope 217. Before fixing the elbow, move the limiting plate 220 according to the size of the elbow. After the rotating frame 216 rotates, it can make the limiting plate 220 rotate. Through the synchronous rotation of the two limiting plates 220, the two ends of the elbow can be clamped, and the elbow can be prevented from shifting; During the fixing process of the elbow, the two limiting plates 220 can clamp both ends of the elbow. After the limiting plates 220 rotate, the staff can move the moving frame 106, so that the moving frame 106 slides on the positioning frame 107, and then can drive the support rod 104 to move. The movement of the support rod 104 can drive the rotating frame 216 to rotate. After the rotating frame 216 rotates, the two limiting plates 220 are attached to both ends of the elbow. At this time, the axis of the elbow coincides with the support rod 104. The positioning screw 108 can be tightened to position the moving frame 106, and then the support rod 104 can be positioned. After that, the limiting plate 220 can be manually rotated. After the limiting plate 220 rotates, it drives the rotating frame 216 to rotate. After the rotating frame 216 rotates, the limiting plate 220 can be moved so that the limiting plate 220 is no longer attached to the elbow, which is convenient for the subsequent butt joint of the straight pipe and the elbow. And the rotation axis of the subsequent fixing component 3 coincides with the support rod 104. Furthermore, the axis of the subsequent straight pipe is convenient to coincide with the axis of the elbow, which is convenient for the accurate positioning of elbows with different bending angles. After the elbow is fixed, the staff can butt one end of the straight pipe and the elbow. Then the U-shaped frame 302 can be rotated so that the rotating sleeve 105 slides on the support rod 104. Then the U-shaped frame 302 can be moved so that the arc-shaped plate 304 is located directly above the straight pipe. Then the screw rod 303 is rotated to drive the arc-shaped plate 304 to move downward. During the downward movement of the arc-shaped plate 304, the two moving plates 308 can be pulled closer to each other through the pull rope 309, so that the moving rod 306 slides on the U-shaped frame 302 and compresses the return spring 307. The axis of the arc-shaped plate 304 coincides with the axis of the arc-shaped frame 310. When the straight pipe is fixed, the arc-shaped plate 304 is attached to the top of the straight pipe, and the two arc-shaped frames 310 are attached to the side of the straight pipe, so that the straight pipe can be fixed. Although the mounting frame 301 is movably connected to the U-shaped frame 302, by pressing the arc-shaped plate 304 against the straight pipe, the straight pipe can be firmly fixed by means of the friction force of the rubber pad 103. Then the elbow and the straight pipe are welded by the welding arm 102. After welding, the straight pipe and the elbow can be taken off and turned over, which is convenient for welding the other side of the joint. At this time, it is no longer necessary to fix the elbow and the straight pipe, which facilitates the staff to fix the straight pipe, makes the rotation axis of the U-shaped frame 302 coincide with the axis of the elbow, and improves the practicability.

[0034] The content not described in detail in this specification belongs to the prior art well known to those skilled in the art.

[0035] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A metal elbow welding device, including a workbench (1), symmetrically installed with support frames (101) at the bottom of the workbench (1), and a welding arm (102) is arranged on the top of the workbench (1); It is characterized in that It also includes: A rubber pad (103), fixedly installed on the other side of the top of the workbench (1), a support rod (104) is arranged on one side above the rubber pad (103), and a rotating sleeve (105) is rotatably connected to the lower part of the outside of the support rod (104); A positioning component (2), arranged on the top and one side of the rubber pad (103), the positioning component (2) includes a fixing plate (201); A fixing component (3), arranged above one side of the rubber pad (103); A fixing plate (201), fixedly installed on the top of the workbench (1) on the side of the rubber pad (103), symmetrically sliding-connected with sliding rods (202) above the inside of the fixing plate (201), and telescopic springs (203) are sleeved on one side of the outside of the two sliding rods (202), and one end of the telescopic spring (203) is fixedly connected to the fixing plate (201), and at the same time the other end of the telescopic spring (203) is fixedly installed with a fixing block (204), and the fixing block (204) is fixedly connected to the sliding rod (202); Positioning columns (205), fixedly installed at one end of the two sliding rods (202), limit rods (206) are fixedly installed below one side of the two positioning columns (205), and the two limit rods (206) are both slidably connected to the fixing plate (201), and an electric push rod (207) is fixedly installed above one side of the fixing plate (201), and a movable frame (209) is fixedly installed at the movable end of the electric push rod (207), and guide rods (208) are symmetrically installed on the side of the movable frame (209) close to the fixing plate (201), and the two guide rods (208) are both slidably connected to the fixing plate (201).

2. The metal elbow welding device according to claim 1, characterized in that: An installation rod (210) is fixedly installed on the side of the movable frame (209) away from the fixing plate (201), and a connecting piece (211) is fixedly installed at the end of the installation rod (210) away from the movable frame (209), and a limit column (212) is fixedly installed at the bottom of the connecting piece (211).

3. A metal elbow welding device according to claim 2, characterized in that: Steel wires (213) are fixedly installed above one side of the two positioning columns (205), and the end of the steel wire (213) away from the positioning column (205) is fixedly connected to the connecting piece (211), and columns (214) are symmetrically installed on the top of the rubber pad (103) on the side of the limit column (212), and guide wheels (215) are rotatably connected to the tops of the two columns (214), and the steel wire (213) is rotatably connected to the guide wheel (215).

4. A metal elbow welding device according to claim 2, characterized in that: Above the outside of the support rod (104), a rotating frame (216) is symmetrically and rotatably connected. On one side of each of the two rotating frames (216), a rubber rope (217) is fixedly installed. And the ends of the two rubber ropes (217) away from the rotating frames (216) are fixedly connected to the connecting piece (211).

5. A metal elbow welding device according to claim 4, characterized in that: On the side of each of the two rotating frames (216) away from the support rod (104), a limiting frame (218) is fixedly installed. Inside each of the two limiting frames (218), an adjusting plate (219) is slidably connected. And on one side of each of the two adjusting plates (219), a limiting plate (220) is fixedly installed.

6. The metal elbow welding equipment according to claim 1, characterized in that: Below the rotating sleeve (105) on the outside of the support rod (104), a moving frame (106) is fixedly installed. On the outside of one side of the moving frame (106), a positioning frame (107) is slidably connected. And the positioning frame (107) is fixedly connected to the rubber pad (103). At the same time, a positioning screw (108) is threadedly connected above the inside of the positioning frame (107).

7. A metal elbow welding device according to claim 1, characterized in that: The fixing component (3) includes a mounting frame (301) fixedly installed on one side of the outside of the rotating sleeve (105). A U-shaped frame (302) is slidably connected to the outside of the mounting frame (301). On one side of the inside of the U-shaped frame (302), a screw rod (303) is threadedly connected. And the bottom end of the screw rod (303) is rotatably connected to an arc-shaped plate (304). At the same time, on both sides of the top of the arc-shaped plate (304), positioning rods (305) are symmetrically installed.

8. A metal elbow welding device according to claim 7, characterized in that: On both sides of the inside of the U-shaped frame (302), two groups of moving rods (306) are symmetrically slidably connected. At one end of each of the two moving rods (306) in each group, a moving plate (308) is fixedly installed. And on the outside of one side of each of the two moving rods (306), a return spring (307) is sleeved. At the same time, the two ends of the return spring (307) are fixedly connected to the U-shaped frame (302) and the moving rod (306) respectively.

9. The metal elbow welding equipment according to claim 8, characterized in that: Below and on the side where the two moving plates (308) are close to each other, an arc-shaped frame (310) is hinged. At the connection between the arc-shaped frame (310) and the moving plate (308), a torsion spring is provided. And on the side where the two arc-shaped frames (310) are close to each other and the bottom of the arc-shaped plate (304), a number of rubber bumps are fixedly installed. At the same time, on the side where the two moving plates (308) are close to each other and above, a pull rope (309) is symmetrically installed. And the end of the pull rope (309) away from the moving plate (308) is fixedly connected to the arc-shaped plate (304).

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