High-precision straightening device for round tubes

Abstract

The utility model relates to round tube straightening equipment technical field discloses a kind of high-precision straightening equipment of round tube, including rack, the two sides symmetry of the rack are equipped with rotary drive device;The top of the rack is evenly distributed multiple sets of support roller group along length direction;Adjacent support roller group between is equipped with laser detection device;The rear end of the rack is equipped with the reduction mechanism that can slide horizontally;The side of the rack is equipped with display control equipment;The rotary drive device includes the two sets of limiting block and the adjusting frame of drive limiting block transverse movement that are oppositely arranged;When using the device, the stable clamping of round tube is formed by the V-shaped clamping slot of two sets of limiting block of rotary drive device setting, when straightening pressure is applied in reduction mechanism, the transverse and longitudinal displacement of round tube can be effectively limited, prevent it from falling due to stress, ensure that the continuous stable of straightening operation is carried out, reduce the risk of equipment damage or safety accident caused by round tube drop.

Description

Technical Field

[0001] This utility model relates to the technical field of round tube straightening equipment, specifically a high-precision straightening device for round tubes. Background Technology

[0002] In fields such as machinery manufacturing and pipeline engineering, round pipes are prone to bending and deformation due to external forces during transportation and storage. Straightening equipment is needed to restore their straightness to ensure the accuracy of subsequent processing and assembly, as well as safety in use. Existing round pipe straightening equipment typically applies pressure to the bent round pipe through a pressing mechanism, combined with a clamping device to fix the pipe's position, allowing the pipe to gradually straighten under stress.

[0003] However, the clamping structure of traditional equipment has obvious shortcomings: it often uses simple planar or arc-shaped clamps, which are difficult to effectively limit the lateral and longitudinal displacement of the round tube when the straightening mechanism applies straightening pressure. This often results in the round tube falling off under pressure, which not only interrupts the straightening operation but may also cause equipment damage or safety accidents.

[0004] Meanwhile, the clamping spacing adjustment method of traditional equipment is complicated, and it is often necessary to disassemble and replace clamping components of different specifications to adapt to round tubes of different diameters. This not only consumes a lot of adjustment time, but also increases the cost of spare parts, which seriously limits the flexibility of equipment use and production efficiency.

[0005] In addition, traditional equipment lacks uniform force control and buffer design for round tubes. During the straightening process, the round tube is prone to secondary deformation due to excessive local force. Furthermore, the rigid contact between the clamping components and the round tube can easily cause surface scratches and also aggravate component wear, affecting the service life of the equipment.

[0006] To address the aforementioned problems, this application proposes a high-precision straightening device for circular tubes. Utility Model Content

[0007] The purpose of this invention is to provide a high-precision straightening device for round tubes, so as to solve the problems of unstable clamping and easy detachment, complex and costly spacing adjustment, and uneven force and easy damage in the prior art mentioned in the background.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a high-precision straightening device for round tubes, comprising a frame, with rotary drive devices symmetrically installed on both sides of the frame; multiple sets of support rollers evenly distributed along the length direction on the top of the frame; a laser detection device provided between adjacent support roller sets; a laterally sliding pressing mechanism provided at the rear end of the frame; and a display and control device installed on the side of the frame; the rotary drive device includes two sets of opposing limit blocks and an adjustment frame for driving the limit blocks to move laterally.

[0009] Preferably, the limiting block includes an upper locking block and a lower locking block; the opposing ends of the upper locking block and the lower locking block form a V-shaped locking groove.

[0010] Preferably, the upper and lower locking blocks are connected by a hinge; the rear end of the upper locking block is hinged to the piston rod end of the hydraulic rod; the cylinder end of the hydraulic rod is hinged to the rear end of the lower locking block; when the hydraulic rod extends or retracts, it can drive the upper locking block to open and close relative to the lower locking block around the hinge.

[0011] Preferably, a rotating roller is provided inside the V-shaped groove of the lower clamping block; the rotating roller is connected to a motor via a rotating shaft, and the motor is fixed to the outside of the lower clamping block.

[0012] Preferably, a spring telescopic rod is installed at the bottom of the limiting block; the bottom end of the spring telescopic rod is fixedly connected to an I-shaped base; the I-shaped base is slidably embedded in the groove of the adjusting frame.

[0013] Preferably, an adjusting rod is rotatably mounted inside the adjusting frame; the adjusting rod has threads with opposite directions at both ends; the I-shaped base is threadedly connected to the adjusting rod; one end of the adjusting rod extends out of the adjusting frame and is fixed with a valve handle; and limiting retaining rings are provided on the adjusting rod on the front and rear sides of the adjusting frame respectively.

[0014] Preferably, both the working surfaces of the support roller group and the pressing mechanism are provided with V-shaped grooves; the included angle of the V-shaped grooves is 90°-120°.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This utility model uses a rotary drive device to stably clamp the round tube through the V-shaped grooves of two sets of limiting blocks. When the pressing mechanism applies straightening pressure, it can effectively limit the lateral and longitudinal displacement of the round tube, prevent it from falling off due to force, ensure the continuous and stable operation of the straightening operation, and reduce the risk of equipment damage or safety accidents caused by the round tube falling off.

[0017] This invention utilizes a rotating adjusting rod, whose oppositely screwed ends drive two sets of I-shaped bases to move relative to or in opposite directions along a sliding groove, thereby quickly adjusting the distance between the two sets of limiting blocks. This allows the equipment to adapt to round pipes of different diameters, enabling straightening operations on various pipe diameters without changing clamping components. It reduces equipment adjustment time and spare parts costs, and improves the equipment's flexibility and production efficiency.

[0018] This invention uses a motor in the lower clamping block to drive a rotating roller to rotate a circular tube, so that all parts of the circumference are evenly subjected to straightening force, avoiding local deformation; the spring telescopic rod at the bottom of the limiting block can elastically extend and retract up and down, buffering the small displacements and vibrations caused by the force on the circular tube, ensuring clamping stability and effective force transmission, and reducing surface scratches and component wear. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of a high-precision straightening device for round tubes according to this utility model;

[0020] Figure 2 This is a schematic diagram of the rotary drive device in a high-precision straightening device for round tubes according to this utility model;

[0021] Figure 3 This is a schematic diagram of the limiting block in a high-precision straightening device for round tubes according to this utility model;

[0022] Figure 4 This is a cross-sectional view of the adjustment frame in a high-precision straightening device for round tubes according to this utility model;

[0023] Figure 5 This is a diagram showing the connection relationship between the I-shaped base and the adjusting rod in a high-precision straightening device for round tubes according to this utility model;

[0024] Figure 6 This is an exploded view of the adjusting frame and I-shaped base in a high-precision straightening device for round tubes according to this utility model;

[0025] In the diagram: 1. Frame; 2. Rotary drive device; 3. Support roller group; 4. Laser detection device; 5. Pressing mechanism; 6. Display and control equipment; 7. Limit block; 8. Adjusting frame; 9. Upper locking block; 10. Lower locking block; 11. Hinge; 12. Hydraulic rod; 13. Rotating roller; 14. Motor; 15. Spring telescopic rod; 16. I-shaped base; 17. Slide groove; 18. Adjusting rod; 19. Retaining ring; 20. Valve handle. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Please see Figures 1-6This utility model provides a technical solution: a high-precision straightening device for round tubes, including a frame 1, with rotary drive devices 2 symmetrically installed on both sides of the frame 1; multiple sets of support rollers 3 evenly distributed along the length direction on the top of the frame 1; a laser detection device 4 between adjacent support roller sets 3; a laterally sliding pressing mechanism 5 at the rear end of the frame 1; and a display and control device 6 installed on the side of the frame 1. The rotary drive device 2 includes two sets of opposing limit blocks 7 and an adjusting frame 8 for driving the limit blocks 7 to move laterally. The frame 1 serves as the basic load-bearing structure of the equipment, providing an installation reference for each component and bearing the forces during the straightening process. The symmetrically mounted rotary drive devices 2 on both sides are used to clamp the round tube and drive it to rotate, so that the force on the circumference of the round tube is uniform. Multiple sets of support rollers 3 evenly distributed along the length of the top provide multi-point support to the bottom of the round tube, preventing the round tube from sagging due to its own weight and affecting the straightening accuracy. The laser detection device 4 between adjacent support roller sets 3 can detect the bending part and degree of the round tube in real time, providing data basis for straightening. The pressing mechanism 5 at the rear end of the frame 1 can apply precise pressure to the bending part, and adapt to the straightening needs of different positions by sliding laterally. The display and control device 6 on the side receives the detection data and displays the equipment status, while controlling the coordinated work of each component. The two sets of limit blocks 7 in the rotary drive device 2 are used to limit the lateral displacement of the round tube. The adjusting frame 8 drives the limit blocks 7 to move laterally to adapt to round tubes of different diameters.

[0028] The limiting block 7 includes an upper clamping block 9 and a lower clamping block 10; the opposing ends of the upper clamping block 9 and the lower clamping block 10 form a V-shaped groove. The limiting block 7, composed of the upper clamping block 9 and the lower clamping block 10, forms a V-shaped groove that conforms to the outer surface of the circular tube. Through the self-centering characteristic of the V-shaped structure, it ensures that the circular tube remains in the center position during rotation and straightening, avoiding straightening errors caused by offset. The inclined surface of the V-shaped groove provides stable clamping for the circular tube while reducing the contact area with the tube, thus lowering the risk of surface scratches.

[0029] The upper clamping block 9 and the lower clamping block 10 are connected by a hinge 11. The rear end of the upper clamping block 9 is hinged to the piston rod end of the hydraulic rod 12; the cylinder end of the hydraulic rod 12 is hinged to the rear end of the lower clamping block 10. When the hydraulic rod 12 extends or retracts, it drives the upper clamping block 9 to open and close relative to the lower clamping block 10 around the hinge 11. The piston rod end of the hydraulic rod 12 is hinged to the rear end of the upper clamping block 9, and the cylinder end is hinged to the rear end of the lower clamping block 10. When the hydraulic rod 12 extends or retracts, it drives the upper clamping block 9 to rotate around the hinge 11, realizing the opening and closing of the V-shaped clamping groove. This structure can flexibly adjust the clamping gap according to the diameter of the round tube, which is convenient for the insertion and removal of the round tube. At the same time, the hydraulic drive can provide a stable clamping force to ensure that the round tube does not slip when rotating.

[0030] A rotating roller 13 is provided inside the V-shaped groove of the lower clamping block 10. The rotating roller 13 is connected to a motor 14 via a rotating shaft, and the motor 14 is fixed to the outside of the lower clamping block 10. The rotating roller 13 inside the V-shaped groove of the lower clamping block 10 directly contacts the surface of the round tube. The motor 14 is fixed to the outside of the lower clamping block 10 and drives the rotating roller 13 to rotate via the rotating shaft. The rotation of the rotating roller 13 causes the round tube to rotate around its own axis through friction, so that the curved parts of the round tube in the circumferential direction can pass through the straightening operation area in sequence, ensuring the uniformity of straightening in the entire circumference. The power provided by the motor 14 can be adjusted to control the rotation speed of the round tube, adapting to different straightening process requirements.

[0031] A spring telescopic rod 15 is installed at the bottom of the limiting block 7; the bottom end of the spring telescopic rod 15 is fixedly connected to an I-shaped base 16; the I-shaped base 16 is slidably embedded in the groove 17 of the adjusting frame 8. The spring telescopic rod 15 at the bottom of the limiting block 7 can elastically extend and retract in the vertical direction. When the round tube has slight diameter fluctuations or is subjected to longitudinal impact, the spring telescopic rod 15 can buffer the vibration through elastic deformation, avoiding damage to the round tube or components caused by rigid contact. The I-shaped base 16 is slidably embedded in the groove 17 of the adjusting frame 8, allowing the limiting block 7 to move laterally along the groove 17. This, in conjunction with the adjusting frame 8, allows for adjustment of the distance between the two sets of limiting blocks 7 to accommodate the clamping requirements of round tubes of different diameters.

[0032] An adjusting rod 18 is rotatably mounted inside the adjusting frame 8. The adjusting rod 18 has threads with opposite directions at both ends. An I-shaped base 16 is threadedly connected to the adjusting rod 18. One end of the adjusting rod 18 extends out of the adjusting frame 8 and is fixed with a valve handle 20. Limiting rings 19 are provided on the adjusting rod 18 on both the front and rear sides of the adjusting frame 8. When the valve handle 20 at one end of the adjusting rod 18 is rotated, due to the opposite directions of the threads, the two I-shaped bases 16 will move simultaneously towards or away from each other along the sliding groove 17, thereby synchronously adjusting the distance between the two sets of limiting blocks 7 and quickly adapting to round pipes of different diameters. The limiting rings 19 provided on the front and rear sides of the adjusting rod 18 on the adjusting frame 8 can limit the axial displacement of the adjusting rod 18, ensuring its stable rotation and preventing threaded connection failure due to displacement.

[0033] Both the support roller assembly 3 and the pressing mechanism 5 have V-grooves on their working surfaces; the included angle of the V-grooves is 90°-120°. The included angle of the V-grooves on the working surfaces of the support roller assembly 3 and the pressing mechanism 5 is set between 90° and 120°. This angle range allows the V-grooves to form two stable points of contact with the surface of circular tubes of different diameters, ensuring the center positioning accuracy of the circular tube during support and pressing through the principle of triangular stability. The self-adaptive characteristics of the V-grooves can adapt to circular tubes within a certain diameter range, eliminating the need for frequent component replacements. Simultaneously, the line contact between the groove surface and the circular tube disperses pressure, reducing deformation or damage to the circular tube caused by localized stress concentration.

[0034] Working principle:

[0035] According to the diameter of the round tube to be straightened, the operator rotates the valve handle 20 on the adjusting frame 8 to drive the adjusting rod 18 to rotate. Because the threads at both ends of the adjusting rod 18 turn in opposite directions, the I-shaped base 16 moves synchronously in opposite directions along the slide groove 17, driving the two sets of limit blocks 7 to adjust the distance to match the diameter of the round tube. The limit retaining ring 19 ensures that the adjusting rod 18 has no axial displacement.

[0036] The hydraulic rod 12 retracts, and the upper clamping block 9 flips upward around the hinge 11 to open the V-shaped groove. The round tube to be straightened is vertically inserted from the top of the equipment and placed in the adaptive V-shaped groove of the support roller group 3. Multiple sets of support roller groups 3 are distributed along the length of the frame 1, providing multi-point support for the bottom of the round tube. Subsequently, the hydraulic rod 12 extends, the upper clamping block 9 closes, and the V-shaped groove fixes the center of the round tube through its self-centering property. The spring telescopic rod 15 elastically compensates for fluctuations in the diameter direction, avoiding surface damage from rigid clamping.

[0037] The motor 14 is started, and the rotating roller 13 drives the circular tube to rotate around its own axis through friction. At the same time, the laser detection device 4 scans the outer circle of the circular tube 360°. The laser detection devices 4 between adjacent support roller groups 3 form segmented detection units. When a laser detection device 4 detects a bending part, it immediately records the coordinate parameters and axial position of that position and transmits the data to the display and control device 6. The display and control device 6 calculates the lateral sliding coordinates of the corresponding pressing mechanism 5 based on the detected bending position, and generates the required pressing force parameters based on the degree of bending. According to the instructions of the display and control device 6, the pressing mechanism 5 slides laterally to directly above the detected bending position, and its V-groove is aligned vertically with the V-groove of the support roller group 3 below. At this time, the support roller groups 3 at both ends of the bending part form a stable fulcrum, dispersing the pressing force through two-point support, avoiding additional deflection of the circular tube during straightening. The pressing mechanism 5 applies a preset pressure downward, and the bending part of the circular tube undergoes plastic deformation under the pressure. At the same time, the continuous rotation of the circular tube ensures uniform force in the circumferential direction and eliminates local ellipticity deviation. The laser detection device 4 at the same location immediately performs a second detection after pressure is applied. If there is still bending residue, the display and control equipment 6 finely adjusts the pressure to perform correction until the straightness of the part meets the standard.

[0038] After the entire tube is inspected and straightened, motor 14 stops working, hydraulic rod 12 retracts to open upper clamping block 9, and the operator vertically removes the straightened round tube from the top of the equipment. Pressing mechanism 5 returns to its initial position, the spacing of limit blocks 7 returns to its default value, and support roller group 3 maintains its initial lifting state, waiting for the next round tube to be fed.

[0039] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

Claims

1. A high-precision straightening device for circular tubes, comprising a frame (1), characterized in that: Rotary drive devices (2) are symmetrically installed on both sides of the frame (1); multiple sets of support rollers (3) are evenly distributed along the length of the top of the frame (1); a laser detection device (4) is provided between adjacent support rollers (3); a sliding pressing mechanism (5) is provided at the rear end of the frame (1); a display and control device (6) is installed on the side of the frame (1); the rotary drive device (2) includes two sets of limiting blocks (7) arranged opposite to each other and an adjustment frame (8) for driving the limiting blocks (7) to move laterally.

2. A high-precision straightening apparatus for a circular pipe according to claim 1, characterized in that: The limiting block (7) includes an upper locking block (9) and a lower locking block (10); the opposing ends of the upper locking block (9) and the lower locking block (10) form a V-shaped locking groove.

3. The high-precision straightening device for a circular tube according to claim 2, characterized in that: The upper locking block (9) and the lower locking block (10) are connected by a hinge (11); the rear end of the upper locking block (9) is hinged to the piston rod end of the hydraulic rod (12); the cylinder end of the hydraulic rod (12) is hinged to the rear end of the lower locking block (10); when the hydraulic rod (12) extends or retracts, it can drive the upper locking block (9) to open and close relative to the lower locking block (10) around the hinge (11).

4. The high-precision straightening device for a circular tube according to claim 2, characterized in that: The lower clamping block (10) has a rotating roller (13) inside the V-shaped groove; the rotating roller (13) is connected to a motor (14) through a rotating shaft, and the motor (14) is fixed to the outside of the lower clamping block (10).

5. A high-precision straightening apparatus for a round pipe according to claim 2, characterized in that: The bottom of the limiting block (7) is equipped with a spring telescopic rod (15); the bottom end of the spring telescopic rod (15) is fixedly connected to an I-shaped base (16); the I-shaped base (16) is slidably embedded in the groove (17) of the adjusting frame (8).

6. A high-precision straightening apparatus for a circular pipe according to claim 5, characterized in that: An adjusting rod (18) is rotatably mounted on the inner side of the adjusting frame (8); the two ends of the adjusting rod (18) are provided with threads of opposite directions; the I-shaped base (16) is threadedly connected to the adjusting rod (18); one end of the adjusting rod (18) extends out of the adjusting frame (8) and is fixed with a valve handle (20); the adjusting rod (18) is provided with limiting retaining rings (19) on the front and rear sides of the adjusting frame (8).

7. The high-precision straightening device for a circular tube according to claim 1, characterized in that: The working surfaces of the support roller group (3) and the pressing mechanism (5) are both provided with V-shaped grooves; the included angle of the V-shaped grooves is 90°-120°.

Images