Welded steel pipe burr removing device

Abstract

The utility model provides a burr removing device for a welded steel pipe. The problem that in the prior art, a grinding device for burrs on the inner wall of a long steel pipe occupies space is solved. The burr removing device comprises a supporting piece, a reciprocating rolling shaft is arranged on one side of the supporting piece, a transmission rod is wound on the reciprocating rolling shaft and driven by a rod feeding device, a cutting device is fixedly connected to the end, away from the reciprocating rolling shaft, of the transmission rod, a three-jaw fixing disc is fixed to the cutting device, and the transmission rod comprises a plurality of connecting rods. The connecting rods are sequentially hinged through magnetic limiting shafts, limiting holes and through holes are formed in the connecting rods, the magnetic limiting shafts slide along the limiting holes and the through holes, the magnetic limiting shafts can limit relative rotation between the connecting rods, an electromagnetic ring is arranged between the reciprocating rolling shaft and the supporting piece, and the transmission rod penetrates through the electromagnetic ring. In a non-working state, the transmission rod recovers to a flexible state through the sliding of the magnetic limiting shaft, so that the winding and the storage are convenient, and the occupied space of the device is reduced.

Description

Technical Field

[0001] This utility model relates to the field of deburring technology, and in particular to a device for removing burrs from welded steel pipes. Background Technology

[0002] If burrs and weld beads generated during the cold drawing or cold rolling of small-diameter welded steel pipes are not cleaned from the inner wall of the pipe, cracks, folds or scratches will appear on the inner surface of the steel pipe, failing to meet the inner surface quality requirements. Furthermore, burrs and weld beads can cause steps to appear on the inner wall of the welded pipe at the weld, thus affecting the online flaw detection and overall quality of the weld.

[0003] A Chinese utility model patent with application number 202120389638.4 discloses a device for removing internal burrs from small-diameter welded steel pipes. This device uses an arc-shaped grinding plate to grind the internal burrs while simultaneously moving a slider to allow the inclined surface of the arc-shaped grinding plate to remove the burrs from the inner wall of the steel pipe. The resulting burr waste is then blown out of the steel pipe by fan blades. However, this solution has the following drawbacks: when the steel pipe is too long, multiple connecting rods are needed to adjust the maximum moving distance of the grinding block; when the entire inner wall of the steel pipe needs grinding, the slider's moving range must be the same as the length of the rods, increasing the length of the slider's worktable and thus occupying space. Furthermore, adjusting the grinding block position each time wastes considerable worker time, and the multiple rod sections require handling, storage, and management after disassembly, wasting human resources. Utility Model Content

[0004] This utility model proposes a burr removal device for welded steel pipes, which solves the problem of space occupation in the existing technology of grinding devices for burrs on the inner wall of long steel pipes.

[0005] The technical solution of this utility model is implemented as follows: A burr removal device for welded steel pipes includes a support frame, on which a support member is provided to support the welded steel pipe. A reciprocating roller is provided on one side of the support member, and a transmission rod is wound on the reciprocating roller. The transmission rod is driven by a rod feeding device. A cutting device is fixedly connected to the end of the transmission rod away from the reciprocating roller. A three-jaw fixing plate is fixed on the cutting device. The jaws of the three-jaw fixing plate abut against the inner wall of the welded steel pipe. The transmission rod includes multiple connecting rods, which are sequentially hinged to each other by magnetic limiting shafts. One end of the connecting rod is a protruding end, and the other end is a grooved end. A limiting hole is provided on the protruding end, and a through hole corresponding to the limiting hole is provided on the grooved end. A magnetic limiting shaft slides along the limiting hole and the through hole. The magnetic limiting shaft can restrict the relative rotation between the connecting rods. An electromagnetic ring is provided between the reciprocating roller and the support member. One end of the transmission rod passes through the electromagnetic ring, and the electromagnetic ring can attract the magnetic limiting shaft to approach or move away from the limiting hole.

[0006] Furthermore, the limiting hole is an inner square hole, and the through hole is larger than the inner square hole. The magnetic limiting shaft includes a square rod that can slide along the inner and outer square holes. A circular rod is fixed to one end of the square rod, and the axes of the square and circular rods coincide. The diameter of the circular rod is smaller than the length and width of the square rod's cross-section. The square and circular rods of the magnetic limiting shaft form precise fits with the inner square hole, outer square hole, inner circular hole, and outer circular hole of the limiting hole, respectively, enabling dynamic switching between rigid and flexible states of the connecting rod, significantly improving the efficiency and portability of the device.

[0007] Furthermore, the cutting device includes a drive chamber, one end of which is fixedly connected to a transmission rod via a recovery chamber, and the other end is connected to a cutter bar. The bottom of the recovery chamber has a recovery port, and a magnetic rod is detachably connected inside the recovery chamber. A motor or telescopic rod can be installed inside the drive chamber to achieve the reciprocating or rotating motion of the cutter bar. The cutting device not only efficiently removes burrs from the inner wall of welded steel pipes but also simultaneously collects burr residue, preventing residue accumulation inside the welded steel pipe and affecting subsequent use. The entire recycling process is highly automated, easy to operate, and significantly improves the practicality and environmental friendliness of the device.

[0008] Furthermore, the rod feeding device includes a vertical frame, with rotating brackets fixed at both the upper and lower ends of the frame. Each rotating bracket has a pulley that rotates, one of which is driven by a motor. All pulleys abut against the sidewall of the transmission rod. The rod feeding device utilizes the friction between the pulleys and the sidewall of the transmission rod to achieve efficient rod transmission.

[0009] Furthermore, a scraper is provided at the recycling port. The scraper can not only effectively collect burr residue, but also work in conjunction with the magnetic rod and the recycling port to ensure thorough cleaning and efficient recycling of burr residue, significantly improving the practicality and environmental friendliness of the device.

[0010] Furthermore, the support member includes a grooved plate with a V-shaped or arc-shaped limiting groove. An arc-shaped fixing plate is detachably connected to the grooved plate, and the fixing plate cooperates with the limiting groove to form a limiting area. The support member can effectively restrict the rotation and movement of the welded steel pipe, ensuring the stability of the welded steel pipe during the deburring operation, thereby improving processing accuracy and efficiency.

[0011] Furthermore, magnetic baffles are fixed to the ends of the square rod and the round rod that are far apart from each other.

[0012] This invention uses a rod-feeding device to drive a transmission rod into the welded steel pipe. The magnetic force generated by an electromagnetic ring transforms the transmission rod from a flexible to a rigid structure, ensuring stable advancement and precise cutting within the pipe. In non-working mode, the transmission rod can return to its flexible state via the sliding of a magnetic limiting shaft, facilitating winding and storage, reducing space requirements, and improving portability. This makes the device suitable for various environments, including confined spaces or situations requiring frequent movement. The synergistic effect of the electromagnetic ring's magnetic control and the mechanical structure enables dynamic switching between rigid and flexible modes of the transmission rod. The components are relatively independent, facilitating disassembly and replacement, and reducing maintenance costs. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the three-dimensional structure of the support component;

[0016] Figure 3 This is a three-dimensional structural diagram illustrating the usage of this utility model;

[0017] Figure 4 This is a three-dimensional sectional view of the reciprocating roller.

[0018] Figure 5 This is a three-dimensional structural diagram of the cutting device.

[0019] Figure 6 This is a three-dimensional sectional view of the cutting device.

[0020] Figure 7 This is an exploded view of the connecting rods.

[0021] The components are as follows: 1. Support component, 2. Rod feeding device, 3. Reciprocating roller, 4. Transmission rod, 5. Limiting hole, 6. Through hole, 7. Cutting device, 8. Three-jaw fixing plate, 9. Connecting rod, 10. Magnetic limiting shaft, 11. Electromagnetic ring, 12. Square rod, 13. Round rod, 16. Recovery bin, 17. Magnetic rod, 18. Recovery port, 20. Pulley, 21. Scraper, 22. Groove plate, 24. Fixing plate, 25. Magnetic baffle. Detailed Implementation

[0022] 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.

[0023] like Figure 1-4 As shown, a burr removal device for welded steel pipes includes a support frame with a support member 1 for supporting the welded steel pipe. A reciprocating roller 3 is located on one side of the support member 1, and a transmission rod 4 is wound around the reciprocating roller 3. The transmission rod 4 is driven by a rod feeding device 2. A cutting device 7 is fixedly connected to the end of the transmission rod 4 away from the reciprocating roller 3. A three-jaw fixing plate 8 is fixed to the cutting device 7, and the jaws of the three-jaw fixing plate 8 abut against the inner wall of the welded steel pipe. The transmission rod 4 includes multiple connecting rods 9, which are connected in a manner that allows for... The connecting rod 9 is hinged via a magnetic limiting shaft 10. One end of the connecting rod 9 is a protruding end, and the other end is a grooved end. The protruding end has a limiting hole 5, and the grooved end has a through hole 6 corresponding to the limiting hole 5. The magnetic limiting shaft 10 slides along the limiting hole 5 and the through hole 6, and the magnetic limiting shaft 10 can limit the relative rotation between the connecting rods 9. An electromagnetic ring 11 is provided between the reciprocating roller 3 and the support member 1. One end of the transmission rod 4 passes through the electromagnetic ring 11, and the electromagnetic ring 11 can attract the magnetic limiting shaft 10 to move closer to or away from the limiting hole 5. The reciprocating roller can be driven by a stepper or servo motor. The three-jaw fixing plate 8 is an existing hydraulic chuck. The hydraulic chuck is powered by a hydraulic pipe, which can be fixed to the transmission rod 4 by cable ties.

[0024] During operation, the welded steel pipe to be processed is fixed by a support frame to ensure its stability during processing. Then, the rod feeding device 2 is activated, driving the transmission rod 4 to gradually enter the welded steel pipe along the electromagnetic ring 11. When the transmission rod 4 passes through the electromagnetic ring 11, the electromagnetic ring 11 is energized, generating magnetic force. Under the action of the magnetic force, the magnetic limiting shaft 10 slides along the limiting hole 5 and the through hole 6, and tightly engages with the limiting hole 5. At this time, the relative rotation between the connecting rods 9 is restricted, and the flexible transmission rod 4 instantly transforms into a rigid structure, ensuring that the cutting device 7 can stably advance inside the welded steel pipe. Upon reaching the cutting position, the cutting device 7, under the radial constraint of the three-jaw fixing plate 8, closely adheres to the inner wall of the welded steel pipe. Driven by the rigid transmission rod 4, the cutting device 7 moves axially along the welded steel pipe, and its cutting edge contacts the inner wall of the welded steel pipe, removing burrs generated during welding through rotation or reciprocating motion. After the burr removal operation inside the welded steel pipe is completed, the rod feeding device 2 drives the transmission rod 4 in the reverse direction, pulling the transmission rod 4 out of the welded steel pipe. At the same time, the magnetic poles of the electromagnetic ring 11 are quickly reversed through the reversing circuit, generating a magnetic force opposite to the previous direction. The reverse magnetic force acts on the magnetic limiting shaft 10, causing it to overcome the clamping force and disengage from the limiting hole 5. The hinge structure between the connecting rods 9 is restored, facilitating the winding of the transmission rod 4. This not only achieves efficient storage of the transmission rod 4 but also significantly reduces the space occupied by the device in the non-working state, making the device easier to store and transport. The entire process, through the magnetic control of the electromagnetic ring 11 and the synergistic effect of the mechanical structure, achieves the dynamic switching between rigidity and flexibility of the transmission rod 4, ensuring the efficiency of the burr removal operation and the portability of the device.

[0025] like Figure 4-7 As shown, the limiting hole 5 is an inner square hole, and the through hole 6 is larger than the inner square hole. The magnetic limiting shaft 10 includes a square rod 12, which can slide along the inner and outer square holes. A circular rod 13 is fixed to one end of the square rod 12. The axes of the square rod 12 and the circular rod 13 coincide, and the diameter of the circular rod 13 is smaller than the length and width of the cross-section of the square rod 12. The electromagnetic ring 11 includes a limiting ring, which is an annular cylinder. The side wall of the cylinder is provided with a sliding groove for the magnetic limiting shaft 10 to slide. An electromagnet that attracts the magnetic limiting shaft 10 is fixed in the sliding groove. The inner diameter of the cylinder can make the axes of adjacent connecting rods 9 coincide. At this time, the magnetic limiting shaft 10 can correspond to the limiting hole 5 and the through hole 6, which facilitates the sliding of the square rod 12 along the inner square hole. The form of the electromagnetic ring 11 is not limited, and any form that can limit the adjacent connecting rods 9 and drive the magnetic limiting shaft 10 is acceptable.

[0026] When the electromagnetic ring 11 is energized, it applies a pushing force to the magnetic limiting shaft 10 through magnetic force. At this time, the square rod 12 slides along the limiting hole 5 under the action of magnetic force, and enters the through hole 6 and the inner square hole in sequence. The cooperation between the square rod 12 and the inner square hole realizes the snap-fit ​​limiting, restricting the relative rotation between the connecting rods 9, and transforming the flexible transmission rod 4 into a rigid structure, ensuring that the cutting device 7 can be stably advanced in the welded steel pipe. When the magnetic poles of the electromagnetic ring 11 are quickly reversed through the reversing circuit, the direction of the magnetic force changes, and the magnetic limiting shaft 10 is subjected to a reverse force. At this time, the square rod 12 disengages from the inner square hole under the action of the reverse magnetic force, while the round rod 13 enters the inner square hole. Since the outer diameter of the round rod 13 is smaller than the width of the inner square hole, a hinge structure is formed between the round rod 13 and the inner square hole, allowing the connecting rod 9 to rotate freely within a certain range. This hinge state makes the transmission rod 4 flexible again, which is convenient for winding and storage under the drive of the reciprocating roller 3.

[0027] like Figure 5-6 As shown, the cutting device 7 includes a drive chamber. One end of the drive chamber is fixedly connected to the transmission rod 4 via a recovery chamber 16, and the other end is connected to a tool holder. The bottom end of the recovery chamber 16 is provided with a recovery port 18, and a magnetic rod 17 is detachably connected inside the recovery chamber 16. A motor or telescopic rod can be installed inside the drive chamber to realize the reciprocating or rotating motion of the tool holder. The magnetic rod 17 is fixedly connected to the recovery chamber 16 via an existing snap-fit ​​connection.

[0028] During operation, the cutting rod rotates to clean the inside of the welded steel pipe. The shredded burrs and residue accumulate along the inner wall of the pipe to the bottom under gravity. When the transmission rod 4 drives the cutting device 7 to move axially along the welded steel pipe, the recovery port 18 passes through the burr and residue accumulation area. At this time, the magnetic rod 17 attracts the burrs and residue with its strong magnetic force and sucks it into the recovery chamber 16 through the recovery port 18. After the deburring operation is completed, the operator can remove the magnetic rod 17 separately and clean the attracted burrs and residue by tapping or blowing. The cleaned magnetic rod 17 can be reinstalled in the recovery chamber 16 for reuse.

[0029] like Figure 3-4 As shown, the rod feeding device 2 includes a vertical frame, with rotating brackets fixed at both the upper and lower ends of the frame. Each rotating bracket has a pulley 20 that rotates, one of which is driven by a motor. All pulleys 20 abut against the side wall of the transmission rod 4. When the motor starts, it drives the pulley 20 to rotate. Through the friction between the pulley 20 and the side wall of the transmission rod 4, the transmission rod 4 moves axially, ensuring that it can smoothly enter or exit the welded steel pipe. To enhance friction and transmission stability, the surface of the pulley 20 can be made of a high-friction coefficient wear-resistant material or have annular anti-slip grooves, increasing the contact area and friction of the pulley 20 and preventing slippage during transmission.

[0030] like Figure 5-6 As shown, a scraper 21 is provided at the recovery port 18. The scraper 21 is designed at an inclined angle, forming a guide channel with the recovery port 18. When the burr residue is pushed by the scraper 21, the residue will slide along the inclined scraper 21 towards the recovery port 18 and eventually enter the recovery bin 16. After the scraper 21 concentrates the burr residue at the recovery port 18, the magnetic rod 17 uses magnetic force to attract the residue, further ensuring that the residue will not fall back onto the inner wall of the welded steel pipe, thereby achieving efficient collection.

[0031] like Figure 2 As shown, the support member 1 includes a channel plate 22 with a V-shaped or arc-shaped limiting groove. An arc-shaped fixing plate 24 is detachably connected to the channel plate 22, and the fixing plate 24 cooperates with the limiting groove to form a limiting area. The V-shaped or arc-shaped limiting groove on the channel plate 22 fits tightly against the outer wall of the welded steel pipe. Utilizing the geometric characteristics of the V-shaped or arc-shaped structure, it ensures that the welded steel pipe can be automatically centered during placement, preventing radial movement. The arc-shaped fixing plate 24 is installed on the channel plate 22 via detachable connections such as bolts or clips, forming a closed limiting area together with the limiting groove, enhancing the radial constraint on the welded steel pipe. The elastic material of the fixing plate 24, such as rubber or spring steel, provides a certain buffering effect when the welded steel pipe is placed, while increasing friction to prevent rotation of the welded steel pipe during processing. Furthermore, by replacing the fixing plate 24 with different curvatures, the size of the limiting area can be flexibly adjusted to ensure effective fixing of welded steel pipes of various specifications.

[0032] like Figure 7 As shown, magnetic baffles 25 are fixed to the ends of the square rod 12 and the round rod 13 that are far apart from each other. The magnetic baffles 25 drive the square rod 12 and the round rod 13 by magnetic force, and also match the structure of the limiting hole 5 and the through hole 6 to form a mechanical limit, ensuring that the rods will not fall off due to vibration or impact.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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 burr removal device for welded steel pipes, comprising a support frame, characterized in that: The support frame is provided with a support member (1) that can support the welded steel pipe. A reciprocating roller (3) is provided on one side of the support member (1). A transmission rod (4) is wound on the reciprocating roller (3). The transmission rod (4) is driven by a rod feeding device (2). A cutting device (7) is fixedly connected to the end of the transmission rod (4) away from the reciprocating roller (3). A three-jaw fixing plate (8) is fixed on the cutting device (7). The jaws of the three-jaw fixing plate (8) abut against the inner wall of the welded steel pipe. The transmission rod (4) includes multiple connecting rods (9). The connecting rods (9) are sequentially hinged by a magnetic limiting shaft (10). Connecting rod (9) has a raised end at one end and a recessed end at the other end. The raised end is provided with a limiting hole (5) and the recessed end is provided with a through hole (6) corresponding to the limiting hole (5). A magnetic limiting shaft (10) slides along the limiting hole (5) and the through hole (6). The magnetic limiting shaft (10) can limit the relative rotation between the connecting rods (9). An electromagnetic ring (11) is provided between the reciprocating roller (3) and the support (1). One end of the transmission rod (4) passes through the electromagnetic ring (11). The electromagnetic ring (11) can attract the magnetic limiting shaft (10) to approach or move away from the limiting hole (5).

2. The burr removal device for welded steel pipes according to claim 1, characterized in that: The limiting hole (5) is an inner square hole, and the through hole (6) is larger than the inner square hole. The magnetic limiting shaft (10) includes a square rod (12). The square rod (12) can slide along the inner square hole and the outer square hole. A circular rod (13) is fixed at one end of the square rod (12). The axes of the square rod (12) and the circular rod (13) coincide. The diameter of the circular rod (13) is smaller than the length and width of the cross section of the square rod (12).

3. The burr removal device for welded steel pipes according to claim 1, characterized in that: The cutting device (7) includes a drive chamber, one end of which is fixedly connected to the transmission rod (4) through a recovery chamber (16), and the other end is connected to a tool bar. The bottom end of the recovery chamber (16) is provided with a recovery port (18), and a magnetic rod (17) is detachably connected inside the recovery chamber (16).

4. The burr removal device for welded steel pipes according to claim 1, characterized in that: The rod feeding device (2) includes a frame, with rotating frames fixed at both the upper and lower ends of the frame. Each rotating frame has a pulley (20) that rotates, one of which is driven by a motor. Each pulley (20) abuts against the side wall of the transmission rod (4).

5. The burr removal device for welded steel pipes according to claim 3, characterized in that: A scraper (21) is provided at the recycling port (18).

6. The burr removal device for welded steel pipes according to claim 1, characterized in that: The support member (1) includes a groove plate (22), on which a V-shaped or arc-shaped limiting groove is provided. An arc-shaped fixing plate (24) is detachably connected to the groove plate (22), and the fixing plate (24) cooperates with the limiting groove to form a limiting area.

7. The burr removal device for welded steel pipes according to claim 2, characterized in that: Magnetic baffles (25) are fixed at the ends of the square rod (12) and the round rod (13) that are far apart from each other.

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