Friction stir welding device for polyethylene pipeline

Abstract

The utility model discloses a polyethylene pipeline stirring friction welding device, and relates to the technical field of welding devices, the polyethylene pipeline stirring friction welding device comprises a base, the top surface of the base is sequentially provided with a first clamp, a hollow plate and a second clamp from left to right, the inner wall of the hollow plate is fixedly provided with a bearing, and the outer wall of the bearing is fixedly sleeved with a rotating disc; and a gear ring fixedly sleeves the outer wall of the rotating disc, a motor is arranged on the side, facing the first clamp, of the hollow plate, a rotating shaft of the motor penetrates through the hollow plate and is fixedly sleeved with a first gear, the first gear is meshed with the gear ring, and a fixing plate is fixedly arranged on the face, facing the second clamp, of the rotating disc. According to the friction welding machine, the motor drives the first gear to rotate, the gear ring drives the rotating disc, the fixing plate, the friction welding machine and the scraping and sweeping piece to rotate, at the moment, chippings generated by welding are scraped away through the scraping and sweeping piece, meanwhile, the chippings at the welding position are washed away through water flow sprayed out by the water cooling piece, and therefore the flatness of the surface of the welding position is improved.

Description

Technical Field

[0001] The present application relates to the technical field of welding devices, and in particular to a polyethylene pipe friction stir welding device. Background Art

[0002] Polyethylene pipes have a wide range of applications, from small-section yellow pipes for natural gas to 48-inch diameter thick-walled black pipes for industrial and urban pipelines. When extending polyethylene pipes, multiple polyethylene pipes need to be welded together through welding devices. Stir friction welding refers to the use of heat generated by the friction between the high-speed rotating welding tool and the workpiece to locally plasticize the welded material. When the welding tool moves forward along the welding interface, the plasticized material flows from the front of the welding tool to the rear under the action of the rotating friction force of the welding tool, and forms a dense solid phase weld under the extrusion of the welding tool. The temperature of the polyethylene pipe at the welding point is relatively high during stir friction welding. At this time, the welding part needs to be cooled in time by a water cooling mechanism to prevent the polyethylene pipe from changing its shape due to excessive temperature.

[0003] When some existing friction stir welding devices are used to weld pipes, a lot of debris is likely to be generated on the surface of the weld, and some of the debris is attached to the surface of the pipe, which easily affects the smoothness of the surface of the pipe. Utility Model Content

[0004] In order to improve the problem that when some existing stir friction welding devices are used to weld pipes, a lot of debris is easily generated on the weld surface, and some debris adheres to the pipe surface, thereby easily affecting the flatness of the pipe surface, the present application provides a polyethylene pipe stir friction welding device.

[0005] The present application provides a polyethylene pipe friction stir welding device, which adopts the following technical solution:

[0006] A polyethylene pipe friction stir welding device comprises a base, wherein a first clamp, a hollow plate and a second clamp are arranged on the top surface of the base in sequence from left to right, a bearing is fixedly arranged on the inner wall of the hollow plate, a rotating disk is fixedly arranged on the outer wall of the bearing, a gear ring is fixedly arranged on the outer wall of the rotating disk, a motor is arranged on the side of the hollow plate facing the first clamp, a rotating shaft of the motor passes through the hollow plate and is fixedly arranged on the first gear, the first gear is meshed with the gear ring, a fixing plate is fixedly arranged on the side of the rotating disk facing the second clamp, a telescopic member is fixedly arranged on the fixing plate, and an extended end of the telescopic member A friction welding machine is fixedly arranged, a water-cooling part is fixedly arranged on the friction welding machine, two connecting plates are symmetrically arranged on the outer side of the friction welding machine, and scraping parts are movably arranged on the opposite sides of the two connecting plates. A collecting cover is arranged on the top of the base, and the collecting cover is located between the hollow plate and the second clamp. A filter plate is hinged in the collecting cover through a hinge shaft, and a gear rod is rotatably inserted in the collecting cover, and the gear rod is meshed with a gear ring. A connecting rod driving part is arranged at one end of the gear rod away from the inner wall of the collecting cover, and the lower end of the connecting rod driving part passes through one end of the filter plate away from the hinge shaft and is fixedly connected to a limiting column.

[0007] Through the above technical solution, the two pipes are first inserted into the first clamp and the second clamp respectively and the joint is located below the friction welding machine. The joint is then friction welded by the friction welding machine. At the same time, the first gear is driven to rotate by the motor and the gear ring drives the turntable and the fixed plate to rotate along the central axis of the pipe, thereby prompting the friction welding machine to rotate along the central axis of the pipe and weld the joint.

[0008] Optionally, in the above-mentioned polyethylene pipe friction stir welding device, the first clamp and the second clamp both include an upper clamp and a lower clamp, the lower clamp is fixedly connected to the base, and one end of the lower clamp is hinged to the upper clamp via a pin.

[0009] Through the above technical solution, the polyethylene pipe can be clamped and fixed by the cooperation of the upper clamp and the lower clamp, and the two polyethylene pipes can be precisely spliced ​​together by the cooperation of the first clamp and the second clamp.

[0010] Optionally, in the above-mentioned polyethylene pipe friction stir welding device, two support plates are inclinedly provided on a side of the hollow plate facing the first clamp, and the lower ends of the two support plates are fixedly connected to the top surface of the base.

[0011] Through the above technical solution, the hollow plate is supported by the cooperation of two support plates, thereby increasing the strength of the support plates.

[0012] Optionally, in the above-mentioned polyethylene pipe friction stir welding device, a guide rail is fixedly provided on the fixed plate, the friction welding machine is slidably matched with the inner wall of the guide rail, and the guide rail is located on the telescopic member.

[0013] Through the above technical solution, when the telescopic member drives the friction welding machine to move, the moving track of the friction welding machine is limited by the guide rail, thereby increasing the stability of the friction welding machine when moving.

[0014] Optionally, in the above-mentioned polyethylene pipe friction stir welding device, the water-cooling component includes a water supply pipe and a nozzle, the water supply pipe is fixedly arranged on the friction welding machine, the nozzle is fixedly arranged at the water outlet end of the water supply pipe, and the nozzle is bent toward one of the scraping components.

[0015] Through the above technical solution, the water supply pipe is connected to the external water supply equipment, and then water is sprayed on the position after the polyethylene pipe is welded through the water supply pipe and the nozzle to cool it down. At the same time, water is sprayed through the water cooling part to flush the debris at the welding point.

[0016] Optionally, in the above-mentioned polyethylene pipe friction stir welding device, the scraping member includes a movable rod, the movable rod is T-shaped, one end of the movable rod passes through the connecting plate and is fixedly connected to a scraper, and the other two ends of the movable rod are fixedly provided with springs, and the end of the spring away from the movable rod is fixedly connected to the connecting plate.

[0017] Through the above technical solution, the spring is used to pull the movable rod and the scraper to move, so that the scraper is always in contact with the polyethylene pipe. When the gear ring drives the turntable, the fixed plate and the friction welding machine to rotate, the surface of the polyethylene pipe is first scraped and cleaned by one of the scraping members, thereby reducing the possibility of debris affecting the welding effect when the polyethylene pipe is welded. As the friction welding machine continues to rotate, the debris generated at the welding position on the surface of the polyethylene pipe is removed by another scraping member.

[0018] Optionally, in the above-mentioned polyethylene pipe friction stir welding device, the connecting rod driving part includes a rotating disk, a rocker, a hollow rectangular plate and a vertical plate, one side of the rotating disk is fixedly connected to the gear rod, the rocker is fixedly connected to the other side of the rotating disk, the vertical plate is vertically inserted into the top surface of the filter plate, the upper end of the vertical plate is fixedly connected to the hollow rectangular plate, the lower end of the vertical plate is fixedly connected to the limit column, and the end of the rocker away from the rotating disk is inserted into the hollow rectangular plate.

[0019] Through the above technical solution, when the gear ring rotates, it drives the gear rod and the rotating disk to rotate, and drives the rocker to rotate synchronously with the rotation of the rotating disk, thereby prompting the rocker to move in the hollow rectangular plate and drive the hollow rectangular plate to move up and down. At this time, the vertical plate and the limit column are driven up and down by the hollow rectangular plate, thereby driving the filter plate to shake up and down through the limit column.

[0020] In summary, the present application includes at least one of the following beneficial effects: 1. The motor drives the first gear to rotate and the gear ring drives the turntable, the fixed plate friction welding machine and the scraper to rotate. At this time, the scraper scrapes the debris generated by the welding, and the water cooling part sprays water to wash the debris at the welding place, thereby increasing the flatness of the welding surface;

[0021] 2. When the gear ring rotates, it drives the gear rod, rotating disk and rocker to rotate. At this time, the rocker drives the hollow rectangular plate, vertical plate and limit column to move up and down, so that the filter plate is driven to shake up and down through the limit column, and then the debris filtered out by the filter plate is transported to the other end of the filter plate, so that the operator can collect the debris later. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the present application;

[0023] Figure 2 It is a partial three-dimensional structural schematic diagram of the present application;

[0024] Figure 3 It is a three-dimensional structural schematic diagram of the scraping and sweeping member of the present application;

[0025] Figure 4 It is a three-dimensional structural schematic diagram of the connecting rod driving component of the present application.

[0026] In the figure: 1. base; 2. first clamp; 3. hollow plate; 301. support plate; 4. second clamp; 401. upper clamp; 402. lower clamp; 5. bearing; 6. turntable; 7. gear ring; 8. motor; 9. first gear; 10. fixed plate; 101. guide rail; 11. telescopic member; 12. friction welding machine; 13. water cooling member; 131. water supply pipe; 132. nozzle; 14. connecting plate; 15. scraping member; 151. movable rod; 152. scraper; 153. spring; 16. collecting cover; 17. filter plate; 18. gear rod; 19. connecting rod driving member; 191. rotating disk; 192. rocker; 193. hollow rectangular plate; 194. vertical plate; 20. limit column. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-4 This application is described in further detail.

[0028] Please refer to the attached figure in the instruction manual Figure 1 , Figure 2 and Figure 3 The present application provides an embodiment: a polyethylene pipe friction stir welding device, comprising a base 1, the top surface of the base 1 is provided with a first clamp 2, a hollow plate 3 and a second clamp 4 from left to right, the first clamp 2 and the second clamp 4 both include an upper clamp 401 and a lower clamp 402, the lower clamp 402 is fixedly connected to the base 1, and one end of the lower clamp 402 and the upper clamp 401 are hinged by a pin shaft, and the upper clamp 401 cooperates with the lower clamp 402 to facilitate clamping and fixing the polyethylene pipe, and the first clamp 2 cooperates with the second clamp 4 so that the two polyethylene pipes can be precisely spliced ​​together.

[0029] A bearing 5 is fixedly provided on the inner wall of the hollow plate 3, and two support plates 301 are inclinedly provided on one side of the hollow plate 3 facing the first clamp 2. The lower ends of the two support plates 301 are fixedly connected to the top surface of the base 1, and the hollow plate 3 is supported by the two support plates 301, thereby increasing the strength of the support plates 301.

[0030] The outer wall fixed sleeve of the bearing 5 is provided with a turntable 6, and the outer wall fixed sleeve of the turntable 6 is provided with a gear ring 7. The bearing 5 is used to facilitate the assembly of the turntable 6 on the hollow plate 3; a motor 8 is provided on the side of the hollow plate 3 facing the first clamp 2, and the rotating shaft of the motor 8 passes through the hollow plate 3 and is fixedly provided with a first gear 9, which is meshed with the gear ring 7. A fixed plate 10 is fixedly provided on the side of the turntable 6 facing the second clamp 4, and the first gear 9 is driven to rotate by the motor 8, and the gear ring 7 drives the turntable 6 and the fixed plate 10 to rotate along the central axis of the pipeline.

[0031] A telescopic member 11 is fixedly provided on the fixed plate 10, and a friction welding machine 12 is fixedly provided on the protruding end of the telescopic member 11. The friction welding machine 12 is a prior art, and two objects are welded together by a rotating welding head. The position of the friction welding machine 12 is conveniently adjusted by the telescopic member 11, so as to facilitate welding of the joints of the two polyethylene pipes; a guide rail 101 is fixedly provided on the fixed plate 10, and the friction welding machine 12 is slidably matched with the inner wall of the guide rail 101. The guide rail 101 is located on the telescopic member 11. When the telescopic member 11 drives the friction welding machine 12 to move, the moving trajectory of the friction welding machine 12 is limited by the guide rail 101, so as to increase the stability of the friction welding machine 12 when moving.

[0032] The friction welding machine 12 is fixedly provided with a water cooling part 13. Two connecting plates 14 are symmetrically provided on the outer side of the friction welding machine 12. The two connecting plates 14 are movably provided with a scraper 15 on the opposite side. The scraper 15 includes a movable rod 151. The movable rod 151 is in a T-shape. One end of the movable rod 151 passes through the connecting plate 14 and is fixedly connected with a scraper 152. The other two ends of the movable rod 151 are fixedly provided with a spring 153. The end of the spring 153 away from the movable rod 151 is fixedly connected to the connecting plate 14. The spring 153 is convenient for pulling the movable rod 151. The movable rod 151 and the scraper 152 move, so that the scraper 152 is always in contact with the polyethylene pipe. When the gear ring 7 drives the turntable 6, the fixed plate 10 and the friction welding machine 12 to rotate, the surface of the polyethylene pipe is firstly scraped and cleaned by one of the scraping members 15, so as to reduce the possibility of debris affecting the welding effect when the polyethylene pipe is welded. As the friction welding machine 12 continues to rotate, the debris generated at the welding part of the polyethylene pipe surface is removed by another scraping member 15, so as to increase the flatness of the surface of the polyethylene pipe welding part.

[0033] The water-cooling component 13 includes a water supply pipe 131 and a nozzle 132. The water supply pipe 131 is fixedly arranged on the friction welding machine 12. The nozzle 132 is fixedly arranged at the water outlet end of the water supply pipe 131. The nozzle 132 is bent toward one of the scraping components 15. The water supply pipe 131 is connected to an external water supply device. Then, water is sprayed on the position after the polyethylene pipe is welded through the water supply pipe 131 and the nozzle 132 to cool down. At the same time, water is sprayed through the water-cooling component 13 to flush the debris at the welding position.

[0034] A collecting hood 16 is provided on the top of the base 1, and the collecting hood 16 is located between the hollow plate 3 and the second clamp 4. A filter plate 17 is hinged in the collecting hood 16 through a hinge shaft. The collecting hood 16 is used to collect the water flow sprayed from the water-cooling component 13, and at the same time, the filter plate 17 is used to filter the debris in the water flow. The filtered water flow can be recycled.

[0035] A gear rod 18 is rotatably inserted in the collection cover 16, and the gear rod 18 is meshed with the gear ring 7. A connecting rod driving member 19 is provided at one end of the gear rod 18 away from the inner wall of the collection cover 16. The lower end of the connecting rod driving member 19 passes through the end of the filter plate 17 away from the hinge axis and is fixedly connected to the limiting column 20. The connecting rod driving member 19 includes a rotating disk 191, a rocker 192, a hollow rectangular plate 193 and a vertical plate 194. One side of the rotating disk 191 is fixedly connected to the gear rod 18, and the rocker 192 is fixedly connected to the other side of the rotating disk 191. The vertical plate 194 is vertically inserted into the top surface of the filter plate 17, and the upper end of the vertical plate 194 is fixedly connected to the hollow rectangular plate 193. The vertical plate 19 The lower end of the gear ring 7 is fixedly connected to the limit column 20, and the end of the rocker 192 away from the rotating disk 191 is inserted into the hollow rectangular plate 193. When the gear ring 7 rotates, it drives the gear rod 18 and the rotating disk 191 to rotate, and drives the rocker 192 to rotate synchronously with the rotation of the rotating disk 6, thereby prompting the rocker 192 to move in the hollow rectangular plate 193 and drive the hollow rectangular plate 193 to move up and down. At this time, the vertical plate 194 and the limit column 20 are driven to move up and down through the hollow rectangular plate 193, so that the filter plate 17 is driven to shake up and down through the limit column 20, and then the debris filtered out by the filter plate 17 is transported to the other end of the filter plate 17, so that the operator can collect the debris later.

[0036] Working principle: When using the polyethylene pipe friction stir welding device, first insert the two pipes into the first clamp 2 and the second clamp 4 respectively and make the joint located below the friction welding machine 12, and then use the friction welding machine 12 to friction weld the joint, and at the same time, the motor 8 drives the first gear 9 to rotate and makes the gear ring 7 drive the turntable 6 and the fixed plate 10 to rotate along the central axis of the pipe, thereby prompting the friction welding machine 12 to rotate along the central axis of the pipe and weld the joint, and at the same time, the water cooling part 13 sprays water to cool the welded part, and then the scrapes generated by the welding are scraped off by the scraping part 15, and at the same time, the water cooling part 13 sprays water to wash the debris at the welding part, thereby increasing the flatness of the surface of the welding part.

[0037] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A polyethylene pipe friction stir welding device, comprising a base (1), characterized in that: The top surface of the base (1) is provided with a first fixture (2), a hollow plate (3) and a second fixture (4) in sequence from left to right; a bearing (5) is fixedly provided on the inner wall of the hollow plate (3); a rotating disk (6) is fixedly provided on the outer wall of the bearing (5); a gear ring (7) is fixedly provided on the outer wall of the rotating disk (6); a motor (8) is provided on the side of the hollow plate (3) facing the first fixture (2); a rotating shaft of the motor (8) passes through the hollow plate (3) and is fixedly provided with a first gear (9); the first gear (9) is meshed with the gear ring (7); a fixing plate (10) is fixedly provided on the side of the rotating disk (6) facing the second fixture (4); a telescopic member (11) is fixedly provided on the fixing plate (10); a friction welding machine (12) is fixedly provided at the protruding end of the telescopic member (11); A water-cooling component (13) is fixedly arranged on the welding machine (12); two connecting plates (14) are symmetrically arranged on the outer side of the friction welding machine (12); and a scraping component (15) is movably arranged on opposite sides of the two connecting plates (14). A collecting hood (16) is arranged on the top of the base (1); the collecting hood (16) is located between the hollow plate (3) and the second clamp (4); a filter plate (17) is hingedly connected in the collecting hood (16) via a hinge shaft; a gear rod (18) is rotatably inserted in the collecting hood (16); the gear rod (18) is meshed with a gear ring (7); a connecting rod driving component (19) is arranged at one end of the gear rod (18) away from the inner wall of the collecting hood (16); and the lower end of the connecting rod driving component (19) passes through one end of the filter plate (17) away from the hinge shaft and is fixedly connected to a limiting column (20).

2. The polyethylene pipe friction stir welding device according to claim 1, characterized in that: The first clamp (2) and the second clamp (4) both comprise an upper clamp (401) and a lower clamp (402); the lower clamp (402) is fixedly connected to the base (1); one end of the lower clamp (402) is hinged to the upper clamp (401) via a pin.

3. The polyethylene pipe friction stir welding device according to claim 1, characterized in that: Two support plates (301) are obliquely arranged on one side of the hollow plate (3) facing the first clamp (2), and the lower ends of the two support plates (301) are fixedly connected to the top surface of the base (1).

4. The polyethylene pipe friction stir welding device according to claim 1, characterized in that: A guide rail (101) is fixedly arranged on the fixed plate (10), the friction welding machine (12) is slidably matched with the inner wall of the guide rail (101), and the guide rail (101) is located on the telescopic member (11).

5. The polyethylene pipe friction stir welding device according to claim 1, characterized in that: The water cooling component (13) comprises a water supply pipe (131) and a nozzle (132); the water supply pipe (131) is fixedly arranged on the friction welding machine (12); the nozzle (132) is fixedly arranged at the water outlet end of the water supply pipe (131); and the nozzle (132) is bent towards one of the scraping components (15).

6. The polyethylene pipe friction stir welding device according to claim 5, characterized in that: The scraping member (15) comprises a movable rod (151) having a T-shaped shape, one end of the movable rod (151) passing through the connecting plate (14) and fixedly connected to a scraper (152), and the other two ends of the movable rod (151) are fixedly provided with springs (153), and one end of the spring (153) away from the movable rod (151) is fixedly connected to the connecting plate (14).

7. The polyethylene pipe friction stir welding device according to claim 1, characterized in that: The connecting rod driving member (19) comprises a rotating disk (191), a rocking arm (192), a hollow rectangular plate (193) and a vertical plate (194); one side of the rotating disk (191) is fixedly connected to the gear rod (18); the rocking arm (192) is fixedly connected to the other side of the rotating disk (191); the vertical plate (194) is vertically plugged into the top surface of the filter plate (17); the upper end of the vertical plate (194) is fixedly connected to the hollow rectangular plate (193); the lower end of the vertical plate (194) is fixedly connected to the limiting column (20); and the end of the rocking arm (192) away from the rotating disk (191) is inserted into the hollow rectangular plate (193).

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