Internal scar scraping device

Abstract

The utility model relates to the technical field of welded pipe machining, and discloses an inner scar scraping device which comprises a machining table and an L-shaped plate, the left side and the right side of the top of the machining table are fixedly connected with groove supporting plates, the front side and the rear side of the top of each groove supporting plate are rotationally connected with a rotating column, and an annular groove is formed in the right side of the outer wall of each rotating column. The top of the L-shaped plate is fixedly connected with a servo motor, and the output end of the servo motor is fixedly connected with a clamping strip cylinder. According to the pipeline scraping device, a welded pipeline is arranged above a rotating column, a bidirectional electric telescopic rod is started to contract, the electric telescopic rod is started to enable a movable hole plate to move leftwards, a hollow thread scraper reaches a scraping position, a servo motor and a clamping strip cylinder are started to rotate, and the hollow thread scraper is driven to scrape the pipeline; and meanwhile, the pulley and the belt are driven, so that the rotating column rotates, the welded pipeline rotates synchronously, and the flatness and consistency of the scraped surface are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of welded pipe processing technology, and in particular to an internal scraping device. Background Technology

[0002] An internal scraping device is a piece of equipment used in the production of welded pipes to remove weld scars from the inner wall. During the welding process, due to the high temperature, weld scars often form on the inner wall of the pipe near the weld point. These weld scars not only affect the appearance of the pipe but may also negatively impact its flow performance and service life. The internal scraping device removes these weld scars from the inner wall of the pipe through mechanical scraping, grinding, or impact. Its working principle involves precisely guiding a scraper or grinding head into the inside of the pipe, where it contacts the inner wall through rotation or sliding to remove residual metal formed during welding. Depending on the diameter, wall thickness, and severity of the weld scars, the scraping device can adjust its working pressure and speed to achieve the best scraping effect.

[0003] A search revealed Chinese Patent Publication No. CN221018966U, which discloses a scraping device for the inner end of welded pipes. The device includes a worktable, a side plate fixed to one side of the worktable, a sliding rod fixed to one side of the side plate, a sliding plate sliding on the outer side of the sliding rod, a clamping plate fixed to one side of the sliding plate, a motor fixed to one side of the sliding plate, a turntable fixed to the output end of the motor, a fixing rod fixed to one side of the turntable, a telescopic rod fixed to one side of the worktable, a lifting plate fixed to the upper end of the telescopic rod, a fixing plate fixed to one side of the lifting plate, a cylinder rotating on one side of the fixing plate, a scraper fixed to the piston rod end of the cylinder, a toothed ring fixed to the outer side of the cylinder, and a second motor fixed to one side of the worktable. This invention has the advantages of reasonable structure, easy control and adjustment, and ease of scraping welded pipes of different sizes. However, in actual use, the scraping action is not continuous and uniform when the scraper scrapes the inner wall of the pipe, resulting in localized over-scraping or under-scraping. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an internal scraping device, which aims to improve the problem that the scraping action in the prior art is not continuous and uniform, and that local over-scraping or under-scraping may occur.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: an internal scraping device, comprising a processing table and an L-shaped plate. Grooved support plates are fixedly connected to the top left and right sides of the processing table. Rotating columns are rotatably connected to the top front and rear sides of the grooved support plates. An annular groove is formed on the right side of the outer wall of each rotating column. A servo motor is fixedly connected to the top of the L-shaped plate. A retaining cylinder is fixedly connected to the output end of the servo motor. A pulley is fixedly connected to the right side of the outer wall of the retaining cylinder. A belt is provided between the pulley and the outer wall of the annular groove. A bidirectional electric telescopic rod is fixedly connected to the left side of the inner wall of the processing table. The bidirectional electric telescopic rod is fixedly connected to movable hollow plates on both its front and rear sides. Sliding U-shaped blocks are slidably connected to adjacent sides of the two movable hollow plates. Buffer columns are rotatably connected to the upper and lower sides of the outer walls of the sliding U-shaped blocks. Fastening bolts are threadedly connected to the opposite sides of the two sliding U-shaped blocks. An electric telescopic rod is fixedly connected to the top left side of the L-shaped plate. A movable perforated plate is fixedly connected to one end of the electric telescopic rod. A hollow threaded scraper is rotatably connected to the left side of the movable perforated plate. The hollow threaded scraper is slidably connected to the cylindrical clamping strip. A lifting mechanism is provided on the top right side of the processing table.

[0006] The above technical solution involves placing the welded pipe above the rotating column, then retracting the bidirectional electric telescopic rod to clamp the pipe using the upper hollow plate and the structure above. The sliding U-shaped block is then moved to adjust its position according to the pipe's dimensions, ensuring better clamping. Activating the electric telescopic rod moves the moving perforated plate to the left, causing the hollow thread scraper to move along with it until the scraper is at the desired scraping position. At this point, the servo motor rotates the clamping cylinder, and the clamping strip above drives the hollow thread scraper to scrape the welded pipe. Simultaneously, the rotation of the clamping cylinder drives the pulley to rotate, which in turn drives the rotating columns on both sides via a belt, causing the welded pipe above to rotate as well. The hollow thread scraper ensures the flatness and consistency of the scraped surface.

[0007] As a further description of the above technical solution:

[0008] The lifting mechanism includes a notch located on the top right side of the processing table. A hydraulic rod is fixedly connected to the right side of the inner wall of the notch. A sliding block is fixedly connected to one end of the hydraulic rod. A rotating plate is rotatably connected to the top of the sliding block. A rotating block is fixedly connected to the bottom of the L-shaped plate. The outer wall of the rotating block is rotatably connected to the top of the rotating plate. Limiting posts are fixedly connected to both the front and rear sides of the processing table. The outer walls of both limiting posts penetrate the L-shaped plate.

[0009] The above technical solution addresses the issue that when different wall thicknesses are used in the welded pipes, the position of the hollow thread scraper needs to be adjusted. By activating the hydraulic rod, the sliding block moves within the recess, causing the upper rotating plate to rotate. This rotation, in turn, causes the L-shaped plate to move under the constraint of the limiting post, thereby changing the position of the hollow thread scraper to accommodate pipes with different wall thicknesses.

[0010] As a further description of the above technical solution:

[0011] A buffer sleeve is fixedly connected to the outer wall of the rotating column, and multiple wear-resistant circles are fixedly connected to the outer wall of the buffer sleeve.

[0012] The above technical solution reduces frictional damage between the pipe and the rotating column by using a buffer sleeve, and improves the durability of the buffer sleeve by using wear-resistant rounds.

[0013] As a further description of the above technical solution:

[0014] A sliding groove is provided on the left side of the inner wall of the processing table, and the sliding groove is slidably connected to the corresponding movable hollow plate.

[0015] The above technical solution allows for easy movement of the hollow plate via the sliding groove.

[0016] As a further description of the above technical solution:

[0017] A column is fixedly connected to the top rear side of the processing table, and an alarm light is fixedly connected to the top of the column.

[0018] The above technical solution provides support for the alarm light via a support column, which can alert operators when a malfunction occurs.

[0019] As a further description of the above technical solution:

[0020] A nameplate is fixedly connected to the front left side of the processing table, and a warning sign block is fixedly connected to the front right side of the processing table.

[0021] The above technical solution allows for the recording of equipment model information via a nameplate, and provides reminders of precautions during operation via warning labels.

[0022] As a further description of the above technical solution:

[0023] A controller is fixedly connected to the top front right side of the processing table. The controller is electrically connected to the servo motor, the bidirectional electric telescopic rod, and the electric telescopic rod.

[0024] The above technical solution allows the controller to separately control the starting and running power of the servo motor, the bidirectional electric telescopic mast, and the electric telescopic mast.

[0025] As a further description of the above technical solution:

[0026] A light is fixedly connected to the top left side of the movable perforated plate, and a monitoring camera is fixedly connected to the middle left side of the movable perforated plate.

[0027] The above technical solution provides additional lighting through lamps and facilitates observation of the interior through monitoring cameras.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, the welded pipe is placed above the rotating column, and the bidirectional electric telescopic rod is activated to retract, which drives the moving hollow plate and the structure to clamp the pipe. The position is adjusted by moving the sliding U-shaped block to ensure the clamping effect. The electric telescopic rod is activated to move the moving perforated plate to the left, and the hollow thread scraper reaches the scraping position. The servo motor is activated, and the clamping cylinder rotates, which drives the hollow thread scraper to scrape the pipe. The rotation of the clamping cylinder also drives the pulley and belt to rotate the rotating column, ensuring that the welded pipe rotates synchronously, which can guarantee the flatness and consistency of the scraped surface.

[0030] 2. In this utility model, by activating the hydraulic rod, the sliding block moves within the recess, the rotating plate rotates accordingly, and the rotating block also rotates, causing the L-shaped plate to move under the action of the limiting post, thereby changing the position of the hollow thread scraper to adapt to pipes with different wall thicknesses. Attached Figure Description

[0031] Figure 1 This is a perspective view of an internal scraping device proposed in this utility model;

[0032] Figure 2 for Figure 1 Enlarged view of point A;

[0033] Figure 3 This is a schematic diagram of the internal scraping device proposed in this utility model;

[0034] Figure 4 This is a schematic diagram of the internal scraping device proposed in this utility model;

[0035] Figure 5 This is a schematic diagram of the internal scraping device proposed in this utility model.

[0036] Legend:

[0037] 1. Processing table; 2. Lifting mechanism; 201. Notch; 202. Hydraulic rod; 203. Sliding block; 204. Rotating plate; 205. Rotating block; 206. Limiting post; 3. L-shaped plate; 4. Servo motor; 5. Pulley; 6. Rotating column; 7. Annular groove; 8. Belt; 9. Groove support plate; 10. Bidirectional electric telescopic rod; 11. Movable hollow plate; 12. Sliding U-shaped block; 13. Fastening bolt; 14. Buffer column; 15. Hollow thread scraper; 16. Electric telescopic rod one; 17. Movable perforated plate; 18. Clamping bar cylinder; 19. Wear-resistant round; 20. Slide groove; 21. Column; 22. Alarm light; 23. Nameplate; 24. Warning sign block; 25. Controller; 26. Lighting light; 27. Monitoring camera; 28. Buffer sleeve. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] Reference Figure 1 , Figure 2 and Figure 3 This utility model provides an embodiment of an internal scraping device, comprising a processing table 1 and an L-shaped plate 3. Grooved support plates 9 are fixedly connected to the top left and right sides of the processing table 1. Rotating columns 6 are rotatably connected to the top front and rear sides of the grooved support plates 9. An annular groove 7 is formed on the right side of the outer wall of the rotating column 6. A servo motor 4 is fixedly connected to the top of the L-shaped plate 3. A retaining cylinder 18 is fixedly connected to the output end of the servo motor 4. A pulley 5 is fixedly connected to the right side of the outer wall of the retaining cylinder 18. A belt 8 is provided between the pulley 5 and the outer wall of the annular groove 7. A bidirectional electric telescopic rod 10 is fixedly connected to the left side of the inner wall of the processing table 1. The front and rear sides of the L-shaped plate 3 are fixedly connected to movable hollow plates 11. Sliding U-shaped blocks 12 are slidably connected to adjacent sides of the two movable hollow plates 11. Buffer columns 14 are rotatably connected to the upper and lower sides of the outer wall of the sliding U-shaped blocks 12. Fastening bolts 13 are threadedly connected to the opposite sides of the two sliding U-shaped blocks 12. An electric telescopic rod 16 is fixedly connected to the top left side of the L-shaped plate 3. A movable perforated plate 17 is fixedly connected to one end of the electric telescopic rod 16. A hollow thread scraper 15 is rotatably connected to the left side of the movable perforated plate 17. The hollow thread scraper 15 is slidably connected to the clamping cylinder 18. A lifting mechanism 2 is provided on the top right side of the processing table 1.

[0040] Specifically, the welded pipe is placed above the rotating column 6. Then, the bidirectional electric telescopic rod 10 is activated to retract, causing the upper hollow plate 11 and the upper structure to clamp the pipe. Then, the sliding U-shaped block 12 is moved to adjust its position according to the size of the pipe to ensure better clamping. Then, by activating the electric telescopic rod 16, the moving perforated plate 17 can be moved to the left, thereby moving the hollow thread scraper 15 together until the hollow thread scraper 15 is in the desired scraping position. At this time, the servo motor 4 is activated to drive the clamping cylinder 18 to rotate. At the same time, the clamping bar above can drive the hollow thread scraper 15 to scrape the welded pipe. During the rotation of the clamping cylinder 18, the pulley 5 will rotate, and the belt 8 will drive the rotating columns 6 on both sides to rotate, so that the welded pipe above will rotate together. The hollow thread scraper 15 can ensure the flatness and consistency of the scraped surface.

[0041] Reference Figure 1 , Figure 3 and Figure 5 The lifting mechanism 2 includes a notch 201, which is located on the top right side of the processing table 1. A hydraulic rod 202 is fixedly connected to the right side of the inner wall of the notch 201. A sliding block 203 is fixedly connected to one end of the hydraulic rod 202. A rotating plate 204 is rotatably connected to the top of the sliding block 203. A rotating block 205 is fixedly connected to the bottom of the L-shaped plate 3. The outer wall of the rotating block 205 is rotatably connected to the top of the rotating plate 204. Limiting posts 206 are fixedly connected to both the front and rear sides of the processing table 1. The outer walls of the two limiting posts 206 penetrate the L-shaped plate 3.

[0042] Specifically, when the wall thickness of the welded pipes is different, the position of the hollow thread scraper 15 needs to be adjusted. At this time, by activating the hydraulic rod 202, the sliding block 203 will move in the recess 201. At this time, the rotating plate 204 above will rotate, thereby rotating above the rotating block 205. This causes the L-shaped plate 3 to move under the restriction of the limiting post 206, thereby changing the position of the hollow thread scraper 15 to adapt to the use of pipes with different wall thicknesses.

[0043] Reference Figure 1 , Figure 3 and Figure 4A buffer sleeve 28 is fixedly connected to the outer wall of the rotating column 6. Multiple wear-resistant circles 19 are fixedly connected to the outer wall of the buffer sleeve 28. The buffer sleeve 28 can reduce friction damage between the pipe and the rotating column 6, and the wear-resistant circles 19 can improve the durability of the buffer sleeve 28. A sliding groove 20 is provided on the left side of the inner wall of the processing table 1. The sliding groove 20 is slidably connected to the corresponding movable hollow plate 11. The sliding groove 20 can facilitate the movement of the movable hollow plate 11. A column 21 is fixedly connected to the rear top of the processing table 1. An alarm light 22 is fixedly connected to the top of the column 21. The column 21 can provide support for the alarm light 22. The alarm light 22 can remind the operator when a malfunction occurs.

[0044] Specifically, the buffer sleeve 28 can reduce frictional damage between the pipe and the rotating column 6, and the wear-resistant circle 19 can improve the durability of the buffer sleeve 28. The slide groove 20 can facilitate the movement of the hollow plate 11, and the column 21 can provide support for the alarm light 22. The alarm light 22 can remind the operator when a malfunction occurs.

[0045] Reference Figure 1 , Figure 3 and Figure 4 A nameplate 23 is fixedly connected to the front left side of the processing table 1, and a warning sign block 24 is fixedly connected to the front right side of the processing table 1. The nameplate 23 can record the model of the equipment, and the warning sign block 24 can remind you of the precautions during operation. A controller 25 is fixedly connected to the top front right side of the processing table 1. The controller 25 is electrically connected to the servo motor 4, the bidirectional electric telescopic rod 10 and the electric telescopic rod 16 respectively. The controller 25 can control the starting and running power of the servo motor 4, the bidirectional electric telescopic rod 10 and the electric telescopic rod 16 respectively. A light 26 is fixedly connected to the top left side of the movable perforated plate 17, and a monitoring camera 27 is fixedly connected to the middle left side of the movable perforated plate 17. The light 26 can provide additional lighting, and the monitoring camera 27 can facilitate observation of the internal situation.

[0046] Specifically, the nameplate 23 can record the equipment model, the warning sign block 24 can remind users of precautions during operation, the controller 25 can control the starting and running power of the servo motor 4, the bidirectional electric telescopic rod 10 and the electric telescopic rod 16 respectively, the lighting lamp 26 can provide additional lighting, and the monitoring camera 27 can facilitate observation of the internal situation.

[0047] Working Principle: Before using the device, firstly, place the welded pipe on the rotating column 6. Then, activate the bidirectional electric telescopic rod 10 to retract it, causing the upper hollow plate 11 and its supporting structure to clamp the pipe. Next, adjust the position of the sliding U-block 12 to ensure it fits the actual size of the pipe, thus clamping it. Afterward, activate the electric telescopic rod 16 to move the moving perforated plate 17 to the left, simultaneously moving the hollow thread scraper 15 until it reaches the predetermined scraping position. At this point, activate the servo motor 4 to rotate the clamping cylinder 18, while simultaneously using the upper clamping bar to drive the hollow thread scraper 15 to scrape the welded pipe. During this process, the rotation of the clamping cylinder 18 synchronously drives the pulley 5 to rotate. The belt 8 drives the rotating columns 6 on both sides to rotate together, thereby causing the welding pipe above to rotate as well. By using the hollow thread scraper 15, the surface after scraping can be ensured to have the required flatness and consistency. In addition, through the lifting mechanism 2, when encountering differences in pipe wall thickness during the welding operation, the position of the hollow thread scraper 15 needs to be adjusted accordingly. At this time, by activating the hydraulic rod 202, the sliding block 203 will move along a predetermined trajectory within the recess 201. As the sliding block 203 moves, the rotating plate 204 above will rotate accordingly and rotate around the rotating block 205. Under this action, the L-shaped plate 3 will be displaced under the constraint of the limiting column 206, thereby completing the adjustment of the position of the hollow thread scraper 15 to adapt to the welding requirements of pipes with different wall thicknesses.

[0048] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 utility model should be included within the protection scope of the present utility model.

Claims

1. A device for internal scarification comprising a processing table (1) and an L-shaped plate (3), characterized in that: The top left and right sides of the processing table (1) are fixedly connected with groove support plates (9), the top front and back sides of the groove support plates (9) are rotatably connected with rotating columns (6), the outer wall right side of the rotating column (6) is provided with an annular groove (7), the top of the L-shaped plate (3) is fixedly connected with a servo motor (4), the output end of the servo motor (4) is fixedly connected with a clamping strip cylinder (18), the outer wall right side of the clamping strip cylinder (18) is fixedly connected with a pulley (5), the pulley (5) and the outer wall of the annular groove (7) are provided with a belt (8), the inner wall left side of the processing table (1) is fixedly connected with a bidirectional electric telescopic rod (10), the front and back sides of the bidirectional electric telescopic rod (10) are fixedly connected with movable hollow plates (11), the adjacent sides of the two movable hollow plates (11) are slidably connected with sliding U-shaped blocks (12), the outer wall upper and lower sides of the sliding U-shaped block (12) are rotatably connected with buffer columns (14), the sides away from each other of the two sliding U-shaped blocks (12) are threadedly connected with fastening bolts (13), the top left side of the L-shaped plate (3) is fixedly connected with an electric telescopic rod one (16), one end of the electric telescopic rod one (16) is fixedly connected with a movable hole plate (17), the left side of the movable hole plate (17) is rotatably connected with a hollow screw thread scraper (15), the hollow screw thread scraper (15) is slidably connected with the clamping strip cylinder (18), and the top right side of the processing table (1) is provided with a lifting mechanism (2).

2. A device for removing internal burrs according to claim 1, characterized in that: The lifting mechanism (2) comprises a notch (201), the notch (201) is provided on the top right side of the processing table (1), the inner wall right side of the notch (201) is fixedly connected with a hydraulic rod (202), one end of the hydraulic rod (202) is fixedly connected with a sliding block (203), the top of the sliding block (203) is rotatably connected with a rotating plate (204), the bottom of the L-shaped plate (3) is fixedly connected with a rotating block (205), the outer wall of the rotating block (205) is rotatably connected with the top of the rotating plate (204), and the front and back sides of the processing table (1) are fixedly connected with limiting columns (206). The outer walls of the two limiting columns (206) all penetrate through the L-shaped plate (3).

3. A device for removing internal burrs according to claim 1, characterized in that: The outer wall of the rotating column (6) is fixedly connected with a buffer sleeve (28), and the outer wall of the buffer sleeve (28) is fixedly connected with a plurality of wear-resistant circles (19).

4. A device for removing internal burrs according to claim 1, characterized in that: The inner wall left side of the processing table (1) is provided with a sliding groove (20), and the sliding groove (20) is slidably connected with the corresponding movable hollow plate (11).

5. An internal scarifier as claimed in claim 1, wherein: The top back side of the processing table (1) is fixedly connected with a stand column (21), and the top of the stand column (21) is fixedly connected with an alarm lamp (22).

6. An internal scarifier as claimed in claim 1, wherein: The front left side of the processing table (1) is fixedly connected with a nameplate (23), and the front right side of the processing table (1) is fixedly connected with a warning sign block (24).

7. An internal scarifier as claimed in claim 1, wherein: The top front right side of the processing table (1) is fixedly connected with a controller (25), and the controller (25) is electrically connected with the servo motor (4), the bidirectional electric telescopic rod (10) and the electric telescopic rod (16) respectively.

8. An internal scarifier as claimed in claim 1, wherein: The left top of the mobile hole plate (17) is fixedly connected with an illuminating lamp (26), and the left middle of the mobile hole plate (17) is fixedly connected with a monitoring camera (27).

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