Cold drawing and straightening equipment and process for beryllium nickel copper alloy profiles

Abstract

This invention discloses a cold-stretching and straightening device and process for beryllium nickel copper alloy profiles, relating to the field of steel processing technology. It includes a first lifting plate, and fine-tuning plates on the outer sides of the first and second lifting plates connected to first and second side straightening rollers via a first robotic arm, a second robotic arm, and a rotating arm. A second servo motor inside the first robotic arm is connected to the second robotic arm via a second screw. A third servo motor on the outer side of the second robotic arm is connected to the rotating arm via a connecting shaft. The rotating arm is connected to the first and second side straightening rollers via a rotating shaft. This invention, by incorporating the first and second side straightening rollers, a rotating arm, a fine-tuning plate, a lifting plate, and robotic arms, achieves independent adjustment of the side straightening rollers in three dimensions: tilt angle, vertical height, and horizontal extension length. This allows for precise fitting of the sides of complex cross-section profiles such as T-shaped and V-shaped profiles, improving straightening accuracy and equipment adaptability.

Description

Technical Field

[0001] This invention relates to the field of steel processing technology, specifically to a cold stretching and straightening equipment and process for beryllium nickel copper alloy profiles. Background Technology

[0002] Beryllium nickel copper alloy is a high-performance copper-based alloy with high strength, high hardness, good electrical and thermal conductivity, and excellent stress relaxation resistance. It is widely used in key components in aerospace, electronic communications, precision instruments, and marine engineering. In actual production, beryllium nickel copper alloy profiles (such as T-shaped, L-shaped, V-shaped grooves, and isosceles trapezoidal profiles with complex cross-sections) are usually formed by cold drawing. However, the cold drawing process will generate residual stress inside the profile, and at the same time, it will cause geometric defects such as bending, twisting, and lateral warping. Therefore, the profiles after drawing must be straightened to meet the strict requirements of straightness and cross-sectional dimensional accuracy for subsequent assembly and use.

[0003] Currently, commonly used profile straightening equipment mainly includes multi-roller straighteners, pressure straighteners, and manual straightening fixtures. For simple round or square bars, existing straightening equipment can basically meet the requirements. However, for profiles with complex cross-sectional shapes, especially beryllium nickel copper alloy profiles with asymmetrical structures or inclined sides, the straightening rollers of traditional straightening equipment have insufficient adjustment freedom, making it difficult for the side straightening rollers to effectively fit with the side of the profile. They also cannot adapt to complex inclined sides and complex contours, and cannot adjust the inclination angle in groups.

[0004] Patent CN115780579B discloses an automatic straightening device for cold-drawn steel. The above patent enables different angles to ensure that the outer wall of the curved roller and the outer wall of the steel can be completely rolled and bonded.

[0005] The aforementioned patent uses multiple sets of curved pressure rollers with different upper and lower angles to straighten the outer wall of the steel, avoiding changes in the steel diameter caused by axial stretching during straightening. Furthermore, the multiple sets of curved pressure rollers with different upper and lower angles allow for pressure adjustment. However, the straightening rollers in this equipment can only be adjusted in the upper and lower horizontal planes, and can only straighten the upper and lower surfaces of the profile, not effectively straighten the sides. For profiles with complex cross-sectional shapes (such as T-shaped, L-shaped, V-shaped grooves, or isosceles trapezoids), the sides often have different height positions, tilt directions, or concave and convex features, making them prone to lateral bending and cross-sectional torsion after cold stretching. There is still room for optimization in adjusting the side straightening rollers.

[0006] Therefore, this application proposes a cold stretching and straightening device and process for beryllium nickel copper alloy profiles capable of multi-directional and multi-dimensional adjustment. Summary of the Invention

[0007] The purpose of this invention is to provide a cold stretching and straightening device and process for beryllium nickel copper alloy profiles, in order to solve the technical problems mentioned in the background art, such as insufficient adjustment freedom of the straightening rollers of traditional straightening equipment for profiles with complex cross-sectional shapes, resulting in the side straightening rollers being difficult to effectively fit with the side of the profile, and also being difficult to adapt to complex inclined sides and complex contours, and unable to adjust the inclination angle in groups.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a cold stretching and straightening device for beryllium nickel copper alloy profiles, comprising a first side plate, a first lifting plate, and a fine-tuning plate. The first side plate has a first servo motor fixed to it via a fixed platform at its top. A first screw at the front end of the first servo motor is connected to a first screw hole in the first lifting plate and the second lifting plate. The fine-tuning plate on the outer side of the first lifting plate and the second lifting plate is connected to a first side straightening roller and a second side straightening roller via a first robotic arm, a second robotic arm, and a rotating arm. A second servo motor inside the first robotic arm is connected to the second robotic arm via a second screw. A third servo motor on the outer side of the second robotic arm is connected to the rotating arm via a connecting shaft. The rotating arm is connected to the first side straightening roller and the second side straightening roller via a rotating shaft.

[0009] Preferably, the first side plate and the second side plate are disposed at the top of the outer wall of the base, and at least five first connecting rods are disposed between the first side plate and the second side plate. One end of the first connecting rod is connected to the outer wall of the first side plate, and the other end of the first connecting rod is connected to the second side plate. The first connecting rod is connected to the lower straightening roller through a sliding bearing, and the outer wall of the lower straightening roller is in contact with the lower surface of the profiled steel.

[0010] Preferably, the first side plate and the second side plate are symmetrically arranged along the central axis of the base. Two fixing platforms are provided at the top of the first side plate and the second side plate. The four corners of the top of the outer wall of the fixing platform are provided with first fixing holes. The top of the outer wall of the fixing platform is attached to the bottom of the outer wall of the fixing plate. The top of the outer wall of the fixing plate is provided with second fixing holes. Bolts pass through the first fixing holes and the second fixing holes to fix the fixing plate to the top of the outer wall of the fixing platform. The top of the outer wall of the fixing plate is connected to the first servo motor. The first servo motor is connected to the first screw. The top of the outer wall of the fixing platform is provided with a through hole. The first screw at the bottom of the first servo motor passes through the through hole and connects to the first lifting plate and the second lifting plate. An annular space gap is left between the outer wall of the first screw and the inner wall of the through hole.

[0011] Preferably, the first lifting plate and the second lifting plate are of the same size and are symmetrically arranged along the central axis of the base. The outer side of the first lifting plate is provided with at least five receiving grooves for accommodating the lower straightening roller. The two first servo motors on the first side plate are connected to the first lifting plate through the first screw at the bottom end. The top of the outer wall of the first lifting plate is provided with two first screw holes, which are respectively connected to the first screws at the bottom ends of the two first servo motors. The two first screws on the second side plate are connected to the two first screw holes at the top end of the second lifting plate. The threads on the outer side of the first screws mesh with the thread grooves on the inner wall of the first screw holes.

[0012] Preferably, the outer walls of the first and second lifting plates are provided with fine-tuning plates, and at least four fine-tuning plates are provided. The fine-tuning plates are located between adjacent first connecting rods. The outer walls of the fine-tuning plates are provided with symmetrically distributed first connecting holes. The outer walls of the fine-tuning plates are in contact with the outer walls of the two bases. The outer walls of the bases are provided with second connecting holes. The first connecting holes and the second connecting holes are concentrically aligned. Bolts pass through the first connecting holes and the second connecting holes to fix the two bases to the upper and lower ends of the fine-tuning plates, respectively. The bases are connected to the rear end of the first robotic arm.

[0013] Preferably, the front end of the first robotic arm is provided with a rectangular groove, the bottom end of the inner wall of the rectangular groove is connected to the second servo motor, the front end of the second servo motor is connected to the second screw, the side of the inner wall of the rectangular groove of the first robotic arm is in contact with the side of the outer wall of the second robotic arm, the rear end of the outer wall of the second robotic arm is provided with a second screw hole, and the second screw is connected to the second screw hole of the second robotic arm.

[0014] Preferably, the second robotic arm has symmetrical support plates on both sides of its front end. The outer side of the support plate has a circular hole, which is concentrically aligned with the center hole on the side of the connecting cylinder. The connecting cylinder is positioned between the two support plates. The third servo motor is positioned on the outer side of the support plate. The connecting shaft at the front end of the third servo motor passes through the circular hole of the support plate and connects to the center hole of the connecting cylinder. The locking block on the outside of the connecting shaft engages with the locking groove on the inner wall of the center hole. The connecting cylinder is connected to the rear end of the rotating arm. The rotating arm is connected to the first side straightening roller and the second side straightening roller via a rotating shaft.

[0015] Preferably, the third servo motor is connected to the control console via a connecting cable, and the control console is connected to the first servo motor and the second servo motor via a connecting cable. The control console adjusts the height of the upper straightening roller, the first side straightening roller, and the second side straightening roller via the first servo motor, adjusts the extension length of the first side straightening roller and the second side straightening roller via the second servo motor, and adjusts the contact angle between the first side straightening roller and the second side straightening roller and the shaped steel material via the third servo motor.

[0016] Preferably, the first and second side straightening rollers are in contact with the outer walls of the irregular structure on both sides of the irregular steel, the irregular steel is disposed between the first and second lifting plates, and at least five second connecting rods are provided on the outer walls of the first and second lifting plates. The second connecting rods are connected to the upper straightening roller through sliding bearings, and the upper straightening roller is in contact with the upper surface of the irregular steel.

[0017] Preferably, the process includes the following steps:

[0018] S1. Vertical Straightening Roller Adjustment: Place the irregular steel material on the upper surface of the lower straightening roller. Simultaneously start the first servo motor through the control console. The first servo motor drives the first screw to rotate. Through the spiral transmission between the first screw and the first screw hole on the first and second lifting plates, the first and second lifting plates are driven to descend vertically, so that the outer surface of the upper straightening roller is in close contact with the upper surface of the irregular steel material, and at the same time, the outer surface of the lower straightening roller is in close contact with the lower surface of the irregular steel material, thus completing the clamping in the vertical direction.

[0019] S2. Adjustment of the position and angle of the side straightening roller: Loosen the bolts that pass through the first connecting hole of the fine adjustment plate and the second connecting hole of the base, move the base vertically so that the vertical height of the first side straightening roller and the second side straightening roller connected to the rear end of the base is aligned with the target area on the side of the special-shaped steel, and then tighten the bolts to fix the base on the fine adjustment plate.

[0020] The third servo motor is started by the control console. The third servo motor drives the connecting shaft to rotate. The connecting shaft drives the rotating arm to rotate through the connecting cylinder, thereby adjusting the tilt angle of the first side straightening roller and the second side straightening roller so that the tilt angle is consistent with the tilt angle of the side of the special-shaped steel.

[0021] The second servo motor is started by the control console. The second servo motor drives the second screw to rotate. The second screw engages with the second screw hole on the second robotic arm, causing the second robotic arm to extend straight out from the rectangular slot of the first robotic arm. This causes the first and second side straightening rollers to move horizontally toward the side of the irregular steel material until the outer surface of the side straightening rollers is in close contact with the side of the irregular steel material.

[0022] S3. Start the external traction device to make the shaped steel move forward at a constant speed and pass through the straightening channel composed of the upper straightening roller, the lower straightening roller, the first side straightening roller and the second side straightening roller in sequence. Each straightening roller rotates freely around the sliding bearing under the friction of the shaped steel, and applies multiple points of repeated straightening force in the vertical and horizontal directions to the shaped steel, eliminating the residual stress and geometric bending generated in the shaped steel during the cold stretching process, and finally obtaining a straight finished product.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. This invention, by incorporating a first side straightening roller, a second side straightening roller, a rotating arm, a connecting shaft, a rotating shaft, and a third servo motor, enables independent or synchronous electric adjustment of the tilt angles of the upper and lower sets of side straightening rollers. This allows the side straightening rollers to swing around the rotating shaft to a position consistent with the tilt angle of the profile side. This solves the problem in traditional straightening equipment where the side straightening roller angle is fixed or can only be adjusted in a single plane, making it unsuitable for profiles with tilted or asymmetrical sides such as V-grooves, isosceles trapezoids, and T-shapes. This results in only point or line contact between the straightening roller and the profile side, leading to concentrated straightening pressure, easy surface damage, and poor straightening effect. This invention achieves surface contact and fit between the side straightening roller and the complex tilted side of the profile, improving the contact uniformity and pressure distribution of lateral straightening, avoiding local indentations or deformation. Furthermore, through independent group control, it can simultaneously adapt to two tilted inner walls (such as V-grooves) in opposite directions on the same profile, expanding the equipment's straightening capability for complex cross-section profiles and improving straightening accuracy and product surface quality.

[0025] 2. This invention, by setting up a fine-tuning plate, a base, a first side straightening roller, and a second side straightening roller, realizes the rotational adjustment of the installation orientation of the side straightening roller, thereby changing the feeding direction and spatial posture of the entire side straightening assembly. This solves the problems of the overall vertical height of the straightening roller being fixed, making it impossible to align with different height features (such as reinforcing ribs, bosses, and grooves) on the side of the profile, and the feeding direction always being perpendicular to the plane of the profile, making it unable to adapt to asymmetrical or non-perpendicular feeding requirements. This invention enables the side straightening roller to achieve three-dimensional spatial position adjustment in the feeding direction, accurately aligning with any target area on the side of the profile. It is suitable for L-shaped, U-shaped, and complex cross-sections with local protrusions or depressions, enhancing the equipment's ability to quickly adapt to diverse profiles, reducing the difficulty and time of manual debugging, and avoiding ineffective straightening or mechanical interference caused by height misalignment.

[0026] 3. This invention, by incorporating a rotating arm, a second robotic arm, a first robotic arm, a second servo motor, a second screw, a second screw hole, a first side straightening roller, and a second side straightening roller, achieves horizontal extension and retraction of the side straightening roller. It can precisely control the horizontal distance between the straightening roller and the side of the profile, solving the problems of horizontal feed control for the side straightening roller, the difficulty in ensuring uniform fit and constant straightening force through manual advancement, and the tendency for overpressure leading to profile deformation or underpressure leading to insufficient straightening. This invention achieves automated, high-precision, and repeatable horizontal extension and retraction adjustment of the side straightening roller. The upper and lower sets of straightening rollers can independently control their extension length to adapt to different pressure requirements at different side positions, ensuring uniform application and stable control of the lateral straightening force. Simultaneously, the anti-detachment structure of the rectangular groove and the locking block improves the high rigidity and repeatability of the extension and retraction process, avoiding straightening deviations caused by shaking and enhancing the stability and controllability of the straightening process.

[0027] 4. This invention, by incorporating a first lifting plate, a second lifting plate, a first servo motor, a first screw, a fine-tuning plate, a base, a first side straightening roller, and a second side straightening roller, achieves a tiered adjustment mechanism that enables rapid adjustment of the upper straightening roller in the vertical direction and fine adjustment of the side straightening roller in the vertical direction. This solves the problem that adjusting the reference height of the side straightening roller via the lifting plate alone cannot independently and finely adjust its height, resulting in low adjustment efficiency, poor accuracy, and difficulty in adapting to differences in side heights of different profiles. The first servo motor drives the lifting plate to achieve rapid coarse adjustment of the reference heights of the upper and side straightening rollers. Then, by adjusting the fixed position of the base on the fine-tuning plate, independent fine adjustment of the side straightening roller's height is achieved. This ensures the consistency of the upper and lower straightening rollers with respect to the vertical direction of the profile, achieving precise adaptation of the side straightening roller to complex cross-sectional height characteristics, reducing manual adjustment time, and improving equipment changeover efficiency and consistency in batch production. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 This is a schematic diagram of the lower straight roller structure of the present invention;

[0030] Figure 3 This is a schematic diagram of the upper straight roller structure of the present invention;

[0031] Figure 4 This is a schematic diagram of the second lifting plate structure of the present invention;

[0032] Figure 5 This is a schematic diagram of the fine-tuning plate structure of the present invention;

[0033] Figure 6 This is a schematic diagram of the connection structure between the second robotic arm and the rotating arm of the present invention;

[0034] Figure 7 This is a schematic diagram of the connection structure between the first robotic arm and the second robotic arm of the present invention;

[0035] Figure 8 This is a top view of the entire invention;

[0036] Figure 9 This is a frontal view of the entire invention;

[0037] Figure 10 This is a side view of the second lifting plate of the present invention.

[0038] In the diagram: 1. First side plate; 2. Second side plate; 3. Base; 4. Fixing platform; 5. Through hole; 6. First servo motor; 7. Fixing plate; 8. First screw; 9. First connecting rod; 10. Lower straightening roller; 11. First lifting plate; 12. Second lifting plate; 13. First screw hole; 14. Second connecting rod; 15. Upper straightening roller; 16. Fine-tuning plate; 17. First connecting hole; 18. Base; 19. Second connecting hole; 20. Second servo motor; 21. Second screw; 22. First robotic arm; 23. Second robotic arm; 24. Support plate; 25. Round hole; 26. Second screw hole; 27. Rotating arm; 28. Connecting cylinder; 29. ​​Third servo motor; 30. Connecting shaft; 31. Rotating shaft; 32. First side straightening roller; 33. Second side straightening roller; 34. Receiving groove; 35. Special-shaped steel. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0042] Please see Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 7An embodiment of the present invention provides a cold stretching and straightening device for beryllium nickel copper alloy profiles. A first servo motor 6 is fixed to a first side plate 1 via a fixed platform 4 at the top. The first side plate 1 and the second side plate 2 are disposed at the top of the outer wall of the base 3. The first screw 8 at the front end of the first servo motor 6 is connected to the first screw hole 13 of the first lifting plate 11 and the second lifting plate 12. The second servo motor 20 inside the first robotic arm 22 is connected to the second robotic arm 23 via a second screw 21. The third servo motor 29 outside the second robotic arm 23 is connected to the rotating arm 27 via a connecting shaft 30. The upper and lower rotating arms 27 are connected to the first side straightening roller 32 and the second side straightening roller 33 via a rotating shaft 31, respectively.

[0043] Furthermore, in the preparation stage before equipment startup, the operator first needs to synchronously start the four first servo motors 6 through the control console. The control console adjusts the height of the upper straight roller 15 through the first servo motors 6. After the first servo motors 6 are powered on, they rotate synchronously clockwise. The working principle is that when the current enters the stator winding of the first servo motor 6, a rotating magnetic field is generated. The rotating magnetic field interacts with the induced current in the rotor to form an electromagnetic torque, which drives the rotor to rotate stably in the clockwise direction. The four first servo motors 6 are synchronously controlled by the control console, which can ensure that the rotation direction and speed of the four motors are completely consistent, thereby ensuring that the subsequent lifting actions of the two first lifting plates 11 and the second lifting plate 12 are synchronized, avoiding mechanical jamming caused by skew.

[0044] The first servo motor 6 rotates clockwise, driving the first screw 8 to rotate synchronously clockwise. The first screw 8 is connected to the first screw hole 13 at the top of the first lifting plate 11 and the second lifting plate 12. According to the principle of screw transmission, when the first screw 8 rotates clockwise, the first screw hole 13, as a nut, tends to rotate with the screw. However, the first lifting plate 11 and the second lifting plate 12 are simultaneously guided and restricted by the two first screws 8. Since each lifting plate has two first screw holes 13 at its top, and the two first screws 8 pass through these two first screw holes 13 respectively, and the two first screws 8 are arranged parallel and symmetrically to each other, they jointly constrain the rotational freedom of the lifting plate, preventing the first lifting plate 11 and the second lifting plate 12 from rotating around any one of the first screws 8. Therefore, the first lifting plate 11 and the second lifting plate 12 can only move upward along the axial direction of the first screw 8, thereby achieving a smooth lifting action. It not only provides driving force but also undertakes the guiding function, eliminating additional guide rods, making the structure more compact, improving the torsional rigidity and linearity of the lifting plate, and thus ensuring the horizontal accuracy of the upper straight roller 15 during the lifting process.

[0045] Then, the operator places the standard shaped steel 35 onto the upper surface of the lower straightening roller 10. At this time, the upper surface of the lower straightening roller 10 is in contact with the bottom end of the standard shaped steel 35, serving as a load-bearing and initial positioning element. The lower straightening roller 10 is mounted on the first connecting rod 9 via a sliding bearing, allowing it to rotate freely and thus reducing frictional resistance during the profile conveying process. Then, the operator starts the first servo motor 6 to rotate counterclockwise via the control console. According to the screw drive principle, the counterclockwise rotation of the first servo motor 6 drives the first screw 8 to rotate counterclockwise. Under the constraint, the first lifting plate 11 and the second lifting plate 12 descend smoothly, thereby driving the upper straight roller 15 to descend until the outer surface of the upper straight roller 15 is in contact with the top of the standard special-shaped steel 35. This achieves gapless clamping of the special-shaped steel 35 by the upper straight roller 15 and the lower straight roller 10 in the vertical direction, providing a precise vertical reference for subsequent side straightening. At the same time, by adjusting the number of rotations of the first servo motor 6 through the control console, the descent distance of the upper straight roller 15 can be controlled, thereby adapting to special-shaped steel 35 of different thicknesses and ensuring that the clamping force is uniform and controllable.

[0046] The operator activates the second servo motors 20 in the two first robotic arms 22 on the fine-tuning plate 16 via the control console. The second servo motors 20 rotate counterclockwise, driving the second screw 21 to rotate counterclockwise. The second screw 21 is connected to the second screw hole 26 at the bottom of the second robotic arm 23. At the same time, the outer wall of the second robotic arm 23 is in contact with the inner wall of the rectangular groove of the first robotic arm 22, thereby causing the second robotic arm 23 to extend outward along the rectangular groove. The principle of movement is that when the second screw 21 rotates, the second screw hole 26 is subjected to the thread thrust. Due to the interaction between the second robotic arm 23 and the inner wall of the rectangular groove of the first robotic arm 22, the second robotic arm 23 extends outward along the rectangular groove. The close fit restricts the rotational freedom of the second robotic arm 23. At the same time, the guiding effect of the rectangular groove makes the second robotic arm 23 only move in a straight line along the longitudinal direction of the groove, converting the rotational motion of the second servo motor 20 into the linear extension and retraction motion of the second robotic arm 23. The fit gap between the rectangular groove and the second robotic arm 23 is extremely small, ensuring high rigidity and repeatability of the extension and retraction process, avoiding the deviation of the side straightening roller position caused by shaking. Meanwhile, the slot on the inner wall of the rectangular groove and the slot on the outer side of the second robotic arm 23 are interlocked. The slot on the inner wall of the rectangular groove does not extend to the outlet, preventing the second robotic arm 23 from coming out.

[0047] The second robotic arm 23 moves outward, causing the rotating arm 27 to move towards the side of the standard irregular steel 35. The second servo motor 20 at the upper end of the fine-tuning plate 16 rotates counterclockwise, causing the first side straightening roller 32 to move towards the side of the standard irregular steel 35. The second servo motor 20 at the lower end of the fine-tuning plate 16 rotates counterclockwise, causing the second side straightening roller 33 to move towards the side of the standard irregular steel 35, so that the outer surfaces of the first side straightening roller 32 and the second side straightening roller 33 on both sides are in contact with the side of the standard irregular steel 35. For example, when the standard irregular steel 35 is a T-shaped structure, the cross-section has a thinner vertical sidewall and a thicker horizontal sidewall. The first side straightening roller 32 is in contact with the thin side of the T-shaped steel, and the second side straightening roller 33 is in contact with the thick side of the T-shaped steel. Through the segmented and independently fed side straightening rollers, it can adapt to special-shaped steel 35 with different heights and cross-sectional shapes. Because the upper and lower second servo motors 20 can independently control the extension and retraction length, they can be aligned with different height positions on the thin and thick sides respectively, ensuring that each side straightening roller can be in contact with the special-shaped steel 35 with the best contact surface. This completes the all-round straightening roller position calibration of the standard special-shaped steel 35 in the vertical and horizontal directions, improving the straightening accuracy and the equipment's ability to quickly adapt to different profiles.

[0048] Please see Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7 An embodiment of the present invention provides a cold stretching and straightening device for beryllium nickel copper alloy profiles. The outer walls of the first lifting plate 11 and the second lifting plate 12 are each provided with a fine-tuning plate 16, and at least four fine-tuning plates 16 are provided. The outer walls of the fine-tuning plates 16 are provided with symmetrically distributed first connecting holes 17, and the outer walls of the bases 18 are provided with second connecting holes 19. Bolts pass through the first connecting holes 17 and the second connecting holes 19 to fix the two bases 18 to the upper and lower ends of the fine-tuning plates 16 respectively. The bases 18 are connected to the rear end of the first robotic arm 22. The front end of the first robotic arm 22 is provided with a rectangular groove. The bottom end of the inner wall of the rectangular groove is connected to a second servo motor 20. The front end of the second servo motor 20 is connected to a second screw 21. The inner wall of the rectangular groove of the first robotic arm 22 is in contact with the outer wall of the second robotic arm 23. The second screw 21 of the second robotic arm 23 is connected to the second screw hole 26 of the second robotic arm 23.

[0049] Furthermore, after the first lifting plate 11 and the second lifting plate 12 are lowered by the counterclockwise rotation of the first servo motor 6, the outer surface of the upper straightening roller 15 is tightly fitted with the upper surface of the standard profile steel 35, and the lower straightening roller 10 is also fitted with the lower surface of the standard profile steel 35. However, in actual operation, since the height position of the sides of profile steel 35 of different specifications is different, for example, the side protrusion of some profiles is close to the upper surface, while the side protrusion of other profiles is close to the lower surface. If the fixed height of the first side straightening roller 32 and the second side straightening roller 33 on the fine adjustment plate 16 is not matched with the side height of the profile, the straightening roller will not be able to effectively fit with the side of the profile. It may be suspended, only the edge is in contact, or there may be no contact at all. This situation will seriously affect the uniform application of lateral pressure in the subsequent straightening process, and may even cause the profile to shift laterally during the straightening process, reducing the straightening accuracy.

[0050] At this point, the operator needs to first unscrew the bolts passing through the first connecting hole 17 and the second connecting hole 19. The bolts fix the two bases 18 to the fine-tuning plate 16. After unscrewing, the bases 18 can move freely along the vertical direction of the fine-tuning plate 16. Then, the operator manually moves the upper and lower bases 18 so that the vertical positions of the first side straightening roller 32 and the second side straightening roller 33 connected to the rear ends of the two bases 18 match the side height of the special-shaped steel 35. By changing the upper and lower fixed positions of the bases 18 on the fine-tuning plate 16, the overall height of the side straightening rollers can be independently adjusted, thereby adapting to different... For irregularly shaped steel 35 with cross-sectional shape, such as T-shaped steel, when the side protrusion is located near the upper surface, simply move the upper base 18 upward a certain distance so that the first side straightening roller 32 is aligned with the protrusion. If the side protrusion of the irregularly shaped steel 35 is located near the lower surface, adjust the lower base 18 and move the lower base 18 downward a certain distance. This avoids the tedious operation of replacing the entire set of straightening rollers, shortens the equipment adjustment time, and because the fine-tuning plate 16 is provided with multiple first connecting holes 17, the base 18 can be fixed in multiple discrete positions, ensuring the repeatability of adjustment and positioning accuracy.

[0051] After the height matching is completed, the operator passes the bolts through the second connecting holes 19 of the base 18 and the first connecting holes 17 of the fine-tuning plate 16, and tightens the bolts to fix the two bases 18 to the upper and lower ends of the fine-tuning plate 16. Each base 18 is provided with four second connecting holes 19, and the fine-tuning plate 16 is provided with multiple first connecting holes 17. By locking the four bolts at the same time, the vibration and torque generated by the lateral pressure during the straightening process can be effectively resisted, ensuring that the base 18 does not shift or rotate during use, thereby maintaining the stable position of the side straightening roller, ensuring that the reference plane of the straightening roller does not shift during subsequent automatic feeding, avoiding the tilting or misalignment of the straightening roller due to loose fixing, and thus ensuring that the direction of the straightening pressure is always perpendicular to the side of the profile.

[0052] After the base 18 is fixed, the operator synchronously starts the second servo motor 20 via the control console. The second servo motor 20 rotates counterclockwise, driving the second screw 21 to rotate counterclockwise. The second screw 21 is connected to the second screw hole 26 at the bottom of the second robotic arm 23. At the same time, the outer wall of the second robotic arm 23 is in contact with the inner wall of the rectangular groove of the first robotic arm 22, thereby driving the second robotic arm 23 to extend outward in a straight line along the rectangular groove, so that the first side straightening roller 32 and the second side straightening roller 33 move smoothly towards the side of the irregular steel 35. Since the height of the base 18 has been pre-adjusted, the side straightening rollers can fit against the side of the profile at the optimal contact height during the horizontal feeding process. This ensures that the outer surfaces of the first side straightening roller 32 and the second side straightening roller 33 are tightly fitted against the side of the standard profiled steel 35. Through graded adjustment of overall lifting and then local fine-tuning, the consistency of the reference of the upper straightening roller 15 and the lower straightening roller 10 is ensured, and the side straightening rollers are accurately adapted to complex cross-sectional shapes, thereby improving the equipment's adaptability to various profiled steel 35.

[0053] Please see Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9 An embodiment of the present invention provides a cold stretching and straightening device for beryllium nickel copper alloy profiles. Support plates 24 are symmetrically arranged on both sides of the front end of a second robotic arm 23. Circular holes 25 are provided on the outer side of the support plates 24. The circular holes 25 of the support plates 24 are concentrically aligned with the central hole on the side of the connecting cylinder 28. A third servo motor 29 is disposed on the outer side of the support plates 24. A connecting shaft 30 at the front end of the third servo motor 29 passes through the circular hole 25 of the support plates 24 and connects to the central hole of the connecting cylinder 28. A locking block on the outer side of the connecting shaft 30 engages with a locking groove on the inner wall of the central hole. The connecting cylinder 28 is connected to the rear end of a rotating arm 27. The upper and lower rotating arms 27 are connected to a first side straightening roller 32 and a second side straightening roller 33 respectively via a rotating shaft 31.

[0054] Furthermore, in actual production, the sides of the profiled steel 35 are not always perpendicular planes. For example, some profiled steel 35 have a cross-section designed as an isosceles trapezoidal structure, with both sides being inclined surfaces at a certain angle, rather than perpendicular surfaces. In this case, if the first side straightening roller 32 and the second side straightening roller 33 still maintain their initial vertical posture, the outer surfaces of the first side straightening roller 32 and the second side straightening roller 33 will not be able to make surface contact with the inclined sides, and may only be in contact with point or line. This will cause the lateral pressure to concentrate in a very small area during straightening, which will not only fail to effectively correct the lateral bending of the profile, but also cause indentations or local deformation on the profile surface, seriously affecting the straightening quality and product appearance. Therefore, the inclination angle of the side straightening rollers must be precisely adjusted before horizontal feeding so that the inclination angle of the first side straightening roller 32 and the second side straightening roller 33 is completely consistent with the side inclination angle of the profiled steel 35.

[0055] At this time, the operator synchronously starts the two third servo motors 29 at the upper and lower ends of the fine-tuning plate 16 through the control console. The synchronization command issued by the control console ensures that the two third servo motors 29 start rotating at the same time, and the rotation direction is clockwise. This makes the tilt angle changes of the upper first side straightening roller 32 and the lower second side straightening roller 33 consistent, so that they can be in contact with a plane with a constant tilt angle (such as a complete side of an isosceles trapezoid). If the adjustment of the first side straightening roller 32 and the second side straightening roller 33 is not synchronized or the rotation direction is inconsistent, it will cause the tilt angles of the upper roller and the lower roller to be different, and they cannot be in contact with the same tilt plane at the same time, resulting in uneven distribution of straightening pressure.

[0056] After the third servo motor 29 rotates clockwise, it drives the connecting shaft 30, which is fixedly connected at the front end, to rotate clockwise synchronously. The connecting shaft 30 and the connecting cylinder 28 are connected by a locking block and a locking slot. Therefore, the rotational motion of the connecting shaft 30 can be transmitted to the connecting cylinder 28 without relative sliding, so that the connecting cylinder 28 also rotates clockwise, ensuring the accuracy and repeatability of angle transmission, and also facilitating disassembly and maintenance.

[0057] The connecting cylinder 28 is fixedly connected to the rear end of the rotating arm 27. Therefore, when the connecting cylinder 28 rotates clockwise, the rotating arm 27 also rotates clockwise around the central axis of the connecting cylinder 28. The rotating arm 27 at the upper end of the fine-tuning plate 16 is connected to the first side straightening roller 32 through the rotating shaft 31, and the rotating arm 27 at the lower end of the fine-tuning plate 16 is connected to the second side straightening roller 33 through the rotating shaft 31. When the rotating arm 27 rotates clockwise, it drives the rotating shaft 31 and the side straightening roller to rotate clockwise synchronously.

[0058] The operator continuously controls the rotation angle of the third servo motor 29 through the console and observes it in real time until the tilt angle of the first side straightening roller 32 and the second side straightening roller 33 is completely consistent with the tilt angle of the side of the special-shaped steel 35. For example, when the cross section of the special-shaped steel 35 is an isosceles trapezoid and the angle between the side and the vertical direction is 30 degrees, the console controls the third servo motor 29 to rotate, so that the straightening roller swings 30 degrees clockwise from the vertical position (0 degrees) to achieve a posture parallel to the trapezoidal side.

[0059] After the angle adjustment is completed, the operator starts the second servo motor 20 simultaneously through the control panel. The second servo motor 20 rotates counterclockwise, driving the second screw 21 to rotate counterclockwise. The second screw 21 is connected to the second screw hole 26 at the bottom of the second robotic arm 23. At the same time, the outer wall of the second robotic arm 23 is in contact with the inner wall of the rectangular groove of the first robotic arm 22, thereby driving the second robotic arm 23 to extend outward in a straight line along the rectangular groove, driving the rotating arm 27 and the side straightening roller that has been tilted to the position to move towards the side of the special-shaped steel 35 until the outer surfaces of the first side straightening roller 32 and the second side straightening roller 33 are in close contact with the tilted side of the special-shaped steel 35. Since the angle has been pre-matched, the side straightening roller can achieve uniform surface contact with the tilted side with a complete cylindrical surface or a shape surface according to the design requirements during the feeding process, maximizing the contact area and distributing the pressure evenly.

[0060] Matching the tilt angle of the side straightening rollers to the tilt angle of the 35-degree side of the irregular steel profile, adjusting the angle before feeding avoids mechanical interference or material damage caused by forced contact when the angle is not aligned. At the same time, the upper and lower side straightening rollers always maintain the same tilt angle, which can stably fit symmetrical or asymmetrical sides with constant tilt angles, such as isosceles trapezoids. This expands the straightening range of the equipment, enabling it to handle not only irregular profiles with vertical sides, but also various complex cross-section profiles with tilted sides, such as trapezoids and triangles. This improves the versatility and straightening accuracy of the equipment, enables rapid production changeover, and significantly reduces manual debugging time and operational difficulty.

[0061] Please see Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10An embodiment of the present invention provides a cold stretching and straightening device for beryllium nickel copper alloy profiles. The first side straightening roller 32 and the second side straightening roller 33 are in contact with the outer walls of the profile structure on both sides of the profile steel 35. The profile steel 35 is disposed between the first lifting plate 11 and the second lifting plate 12. At least five second connecting rods 14 are provided on the outer walls of the first lifting plate 11 and the second lifting plate 12. The second connecting rods 14 are connected to the upper straightening roller 15 through sliding bearings. The upper straightening roller 15 is in contact with the upper surface of the profile steel 35.

[0062] Furthermore, in the processing of special-shaped steel 35, some special structural parts have complex side profiles, such as a V-shaped groove structure. The V-shaped groove is composed of two opposing inclined inner walls, usually in a symmetrical or asymmetrical angle shape. Taking a symmetrical V-shaped groove as an example, the groove walls on both sides of the symmetrical V-shaped groove each form a certain angle with the vertical direction. For example, if the inclination angle of each groove wall is 45 degrees, then the angle between the two groove walls is 90 degrees. At this time, if only the upper and lower side straightening rollers are adjusted to the same inclination angle, only one groove wall can be attached, and it is impossible to attach the upper and lower groove walls at the same time. Because the inclination directions of the upper and lower groove walls of the V-shaped groove are opposite, the upper groove wall inclines outward from top to bottom, and the lower groove wall inclines outward from bottom to top, it is necessary to independently adjust the first side straightening roller 32 at the upper end and the second side straightening roller 33 at the lower end of the fine-tuning plate 16 at opposite angles so that the two side straightening rollers respectively attach to the upper and lower inclined inner walls of the V-shaped groove.

[0063] At this time, the operator starts the two third servo motors 29 at the upper and lower ends of the fine-tuning plate 16 through the control console to achieve independent control. The control console issues different commands to the two third servo motors 29. For the upper third servo motor 29, the control console controls the third servo motor 29 to rotate counterclockwise, and for the lower third servo motor 29, the control console controls the third servo motor 29 to rotate clockwise, so that the upper and lower rotating arms 27 and the two side straightening rollers can swing in opposite directions, thereby adapting to the two inner walls of the V-groove with opposite inclination directions. If synchronous and same-direction control is used, the two side straightening rollers will tilt in the same direction, causing one of the straightening rollers to be tilted in the opposite direction to the inner wall of the V-groove and unable to fit.

[0064] The control console controls the third servo motor 29 at the top to rotate counterclockwise. The counterclockwise rotation of the third servo motor 29 drives the connecting shaft 30 to rotate counterclockwise. The connecting shaft 30 drives the connecting cylinder 28 to rotate counterclockwise through the interlocking structure of the locking block and the locking slot. The connecting cylinder 28 drives the rotating arm 27 to rotate counterclockwise. The rotating arm 27 drives the first side straightening roller 32 to swing counterclockwise around the axis of the rotating shaft 31 through the rotating shaft 31. The control console precisely controls the rotation angle. When the first side straightening roller 32 swings 45 degrees clockwise from the vertical position and stops, the inclination angle of the outer surface of the first side straightening roller 32 is completely consistent with the inclination angle (45 degrees) of the upper wall of the V-shaped groove and they are parallel to each other.

[0065] Simultaneously, the control console controls the third servo motor 29 at the lower end to rotate clockwise. The clockwise rotation of the third servo motor 29 drives the connecting shaft 30 to rotate clockwise, which in turn drives the connecting cylinder 28 to rotate clockwise. The connecting cylinder 28 drives the rotating arm 27 to rotate clockwise, and finally drives the second side straightening roller 33 to swing clockwise 45 degrees around the axis of the rotating shaft 31 and then stop. At this time, the inclination angle of the outer surface of the second side straightening roller 33 is completely consistent with the inclination angle (45 degrees) of the lower wall of the V-groove and they are parallel to each other, so that the two side straightening rollers are respectively aligned with the two inclination inner walls in opposite directions in the V-groove, creating conditions for subsequent double-sided synchronous bonding.

[0066] After the angle adjustment is completed, the tilt angles of the first side straightening roller 32 and the second side straightening roller 33 are perfectly matched with the tilt angles of the upper and lower inner walls of the V-groove on the side of the profiled steel 35. At this time, the contact surfaces of the two side straightening rollers are parallel to the upper and lower inclined surfaces of the V-groove. Then, the operator synchronously starts the two second servo motors 20 at the upper and lower ends of the fine-tuning plate 16 through the control console. The two second servo motors 20 rotate counterclockwise at the same time, driving the corresponding second screws 21 to rotate counterclockwise. The second screws 21 are connected to the second screw hole 26 at the bottom of the second robotic arm 23. At the same time, the outer wall of the second robotic arm 23 is connected to the first machine... The inner walls of the rectangular groove of the robotic arm 22 fit together, thereby driving the two upper and lower second robotic arms 23 to extend in a straight line along the rectangular groove toward the shaped steel 35 at the same time. This causes the upper first side straightening roller 32 and the lower second side straightening roller 33, which have been tilted into place, to move into the V-shaped groove at the same time. Since the tilt angles of the two side straightening rollers are matched with the upper and lower inner walls of the V-shaped groove respectively, during the feeding process, the outer surface of the upper first side straightening roller 32 gradually approaches the upper groove wall, and the outer surface of the lower second side straightening roller 33 gradually approaches the lower groove wall, ultimately achieving simultaneous and uniform surface contact between the two side straightening rollers and the upper and lower inner walls of the V-shaped groove.

[0067] During the straightening process, two side straightening rollers apply pressure to the inner wall of the V-groove from opposite directions, effectively correcting any expansion, contraction, or twisting deformation that may occur during cold stretching. This ensures the angular accuracy and symmetry of the V-groove. The design, combining independent angle adjustment with synchronous feeding, enhances the equipment's adaptability to complex irregular cross-sections. It can handle various cross-sectional shapes such as V-shapes, U-shapes, or trapezoids without changing the straightening rollers, reducing tooling costs and production preparation time, enabling rapid production changeover, and improving batch production efficiency.

[0068] Please see Figure 1 , Figure 2 , Figure 3 , Figure 8 , Figure 9 and Figure 10 An embodiment of the present invention provides a cold stretching and straightening device for beryllium nickel copper alloy profiles. A third servo motor 29 is connected to a control console via a connecting line. The control console is connected to a first servo motor 6 and a second servo motor 20 via a connecting line. The control console adjusts the height of the upper straightening roller 15, the first side straightening roller 32, and the second side straightening roller 33 via the first servo motor 6. The control console adjusts the extension length of the first side straightening roller 32 and the second side straightening roller 33 via the second servo motor 20. The control console adjusts the contact angle between the first side straightening roller 32 and the second side straightening roller 33 and the profiled steel 35 via the third servo motor 29.

[0069] Furthermore, after the upper straightening roller 15, lower straightening roller 10, first side straightening roller 32, and second side straightening roller 33 have all completed precise adjustments to their height, horizontal position, and tilt angle, the equipment enters the pre-straightening state. At this time, the outer surface of the upper straightening roller 15 is tightly attached to the upper surface of the standard shaped steel 35, the outer surface of the lower straightening roller 10 is tightly attached to the lower surface of the standard shaped steel 35, and the first side straightening roller 32 and second side straightening roller 33 are respectively attached to the sides of the standard shaped steel 35 in sections, forming a straightening channel that perfectly matches the cross-section of the standard shaped steel 35. Then, the operator places the standard shaped steel... The profile 35 is slowly pulled out along the equipment outlet direction, and then the equipment is started. At this time, the profile 35, which has been processed by the cold stretching process, continuously enters the multi-directional constraint space composed of the upper straightening roller 15, the lower straightening roller 10, the first side straightening roller 32, and the second side straightening roller 33. During the operation of the equipment, the profile 35 moves forward at a constant speed under the action of external traction force. At the same time, each straightening roller rotates freely around its respective sliding bearing under the friction of the profile 35, which transforms sliding friction into rolling friction, thereby reducing straightening resistance and avoiding overheating or scratches on the profile surface due to sliding friction.

[0070] During the straightening process, the upper straightening roller 15 and the lower straightening roller 10 jointly apply a vertical constraint force to the shaped steel 35. The upper straightening roller 15 maintains a fixed vertical position, and a certain compressive stress is formed between the outer surface of the upper straightening roller 15 and the upper surface of the shaped steel 35. The lower straightening roller 10 maintains contact with the lower surface of the shaped steel 35. When the shaped steel 35 is bent in the vertical direction along its length (e.g., arched upward or concave downward), the bent part will be forced to compress when passing through the gap between the upper straightening roller 15 and the lower straightening roller 10, causing the fibers at the bent part to undergo plastic elongation or compression, thereby gradually correcting the bend to a straight state.

[0071] Simultaneously, the first side straightening roller 32 and the second side straightening roller 33 apply lateral constraint forces to the profiled steel 35 from both sides. For profiled steel 35 with asymmetrical cross-sections (such as T-shaped, L-shaped or V-shaped groove structures), lateral bending or cross-sectional torsion is easily generated during cold stretching. The first side straightening roller 32 and the second side straightening roller 33 can suppress lateral deformation. When the profiled steel 35 bends to one side, the bent part will generate greater contact pressure with the side straightening roller on that side. The side straightening roller pushes the profile back to the center position through the reaction force, thereby achieving lateral straightening. Since the first side straightening roller 32 and the second side straightening roller 33 extend independently, they can be independently adjusted for different pressure requirements on different sides, thereby accurately controlling the distribution of lateral straightening force and avoiding new lateral bending of the profiled steel 35 due to excessive pressure on one side.

[0072] Under the synergistic action of multiple straightening rollers, the profiled steel 35 undergoes repeated straightening at multiple points in both vertical and horizontal directions during its forward movement. Each time the profiled steel 35 passes through the gap between the straightening rollers, the local bending and twisting of the profiled steel 35 are gradually reduced, ultimately resulting in a highly straight and precisely shaped finished product at the exit end. No machine stoppage is required for adjustment, and profiled steel 35 can be processed in batches by coiling or cutting to a fixed length. The production efficiency is far higher than that of traditional pressure straightening or manual straightening, reducing changeover time and manual intervention. This achieves highly efficient cold stretching and straightening of beryllium nickel copper alloy profiles, eliminating residual stress and geometric deviations generated during the stretching process, improving the straightness and cross-sectional dimensional consistency of the profiled steel 35, and meeting the stringent quality requirements of aerospace and precision instrument industries for profiled steel.

[0073] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6An embodiment of the present invention provides a cold stretching and straightening device for beryllium nickel copper alloy profiles. The top of the outer wall of the fixed plate 7 is connected to the first servo motor 6, and the first servo motor 6 is connected to the first screw 8. The top of the outer wall of the fixed platform 4 is provided with a through hole 5. The first screw 8 at the bottom of the first servo motor 6 passes through the through hole 5 and is connected to the first lifting plate 11 and the second lifting plate 12. The outer side of the first lifting plate 11 is provided with at least five receiving grooves 34 for receiving the lower straightening roller 10. The two first servo motors 6 on the first side plate 1 are connected to the first lifting plate 11 through the first screw 8 at the bottom. The two first screws 8 on the second side plate 2 are connected to the two first screw holes 13 at the top of the second lifting plate 12.

[0074] Furthermore, in the actual production of beryllium nickel copper alloy profiles, the cross-sectional shape of the profiled steel 35 is diverse. In addition to structures such as T-shaped, isosceles trapezoidal or V-shaped grooves, it also includes U-shaped, L-shaped, Ω-shaped and even asymmetrical complex cross-sections. The common feature of these different cross-sections is that the sides have different height positions, tilt directions and convex or concave features. By adjusting the fixed position of the base 18 on the fine adjustment plate 16 and the installation orientation of the base 18 itself, the first side straightening roller 32 and the second side straightening roller 33 can achieve multi-dimensional position adjustment in space, thereby accurately aligning with any target area on the side of the profiled steel 35.

[0075] Each fine-tuning plate 16 is provided with a plurality of first connecting holes 17 arranged in an array. The first connecting holes 17 are arranged in at least two columns along the vertical direction to form multiple selectable fixed positions. Each base 18 is provided with four second connecting holes 19. The center distance of the four second connecting holes 19 is equal to the center distance of two adjacent first connecting holes 17 on the fine-tuning plate 16, thereby allowing the base 18 to be fixed to the fine-tuning plate 16 simultaneously by four bolts. When it is necessary to adjust the vertical height of the side straightening roller, the operator first uses a wrench to loosen the bolts passing through the first connecting holes 17. After unscrewing the four bolts in the connecting hole 17 and the second connecting hole 19, the fixing between the base 18 and the fine adjustment plate 16 is released, and the base 18 can slide up and down along the vertical direction of the fine adjustment plate 16. According to the specific height position of the protrusion or depression on the side of the profile 35, the operator moves the base 18 to the appropriate position of the first connecting hole 17. For example, if there is a reinforcing rib near the upper surface on the side of the profile, the upper base 18 is moved up by several holes so that the center height of the first side straightening roller 32 is aligned with the center height of the reinforcing rib.

[0076] In addition to vertical movement, the base 18 can also rotate around its central axis. With the bolts loosened, the operator can remove the base 18 from the fine-tuning plate 16, or keep it in contact but rotate it a certain angle to realign the connecting holes. During rotation, the base 18 will drive the fixedly connected first robotic arm 22, second robotic arm 23, rotating arm 27, and side straightening roller to rotate as a whole. This allows the feed direction of the side straightening roller to no longer be limited to the direction perpendicular to the plane of the fine-tuning plate 16, but can be adjusted according to the inclination or corner of the side of the irregular steel 35. The structure is adjusted to be oblique feed, which changes the installation orientation angle of the entire side straightening assembly (including the robotic arm and straightening roller) relative to the fine adjustment plate 16. The angle adjustment achieved by the third servo motor 29 changes the swing angle of the straightening roller itself relative to the rotating arm 27. Through mutual cooperation, two degrees of freedom can be independently controlled, thereby adapting to more complex spatial sides. After the position and orientation adjustment is completed, the operator passes the bolts through the second connecting hole 19 of the base 18 and the first connecting hole 17 of the fine adjustment plate 16 in sequence and tightens the bolts.

[0077] A limit plate is provided on the outer side of each first screw 8. The limit plate has a circular structure and is fixedly installed at the lower end of the first screw 8 near the end. When the first servo motor 6 rotates counterclockwise, driving the first screw 8 to rotate counterclockwise, the first lifting plate 11 and the second lifting plate 12 move downward. If the operator inputs an excessive descent command on the control panel, or if a equipment malfunction causes the motor not to stop in time, the first lifting plate 11 and the second lifting plate 12 will continue to descend, causing the upper straight roller 15 to collide with the lower straight roller 10, resulting in equipment damage. When the first lifting plate 11 or the second lifting plate 12 descends to the preset lower limit position... The upper surface of the limit plate will make mechanical contact with the lower surface of the first lifting plate 11 or the second lifting plate 12, preventing the lifting plate from continuing to descend. Since the first screw 8 and the first screw hole 13 are threadedly engaged, the resistance provided by the limit plate will cause the load torque of the first servo motor 6 to increase sharply. After the control console detects the overcurrent signal, it will immediately cut off the power supply to the motor, thereby forcibly stopping the descent action. In the event of failure of electrical limit (such as limit switch, encoder limit), a reliable safety protection is provided to prevent mechanical collision accidents caused by control failure or misoperation, and to protect the straightening roller, lifting plate and screw transmission system from damage.

[0078] Working principle: In the preparation stage before the equipment starts, the operator first starts four first servo motors 6 synchronously through the control console. The first servo motors 6 drive the first screw 8 to rotate. Through the screw drive between the first screw 8 and the first screw hole 13 on the first lifting plate 11 and the second lifting plate 12, the first lifting plate 11 and the second lifting plate 12 are driven to rise and fall smoothly in the vertical direction. The upper straight roller 15 is set between the first lifting plate 11 and the second lifting plate 12 through the second connecting rod 14. Therefore, it moves synchronously with the lifting plate. The operator places the standard special-shaped steel 35 on the lower straight roller 10 and controls the first servo motor 6 to make the upper straight roller 15 descend until the outer surface of the upper straight roller 15 is tightly attached to the upper surface of the special-shaped steel 35, thereby achieving gapless clamping in the vertical direction.

[0079] Subsequently, the operator adjusts the position and angle of the first side straightening roller 32 and the second side straightening roller 33 according to the shape characteristics of the side of the special-shaped steel 35. By loosening the bolts, the fixed position of the base 18 on the fine adjustment plate 16 is adjusted so that the height of the side straightening roller in the vertical direction is aligned with the target area of ​​the side of the special-shaped steel 35. Then, the third servo motor 29 is started through the control console, driving the rotating arm 27 to rotate around the central axis of the connecting cylinder 28, thereby adjusting the tilt angle of the first side straightening roller 32 and the second side straightening roller 33 so that the tilt angle of the side straightening roller is consistent with that of the side of the special-shaped steel 35. Finally, the second servo motor 20 is started through the control console, driving the second robotic arm 23 to extend from the rectangular slot of the first robotic arm 22, driving the side straightening roller to feed horizontally to the side of the special-shaped steel 35 until the outer surface of the side straightening roller is in close contact with the side of the special-shaped steel 35. For special-shaped steel 35 with complex side contours, the upper and lower third servo motors 29 are independently controlled so that the two side straightening rollers can swing in different directions and respectively contact different inclined inner walls.

[0080] After the position and angle of all straightening rollers are adjusted, the equipment forms a straightening channel that perfectly matches the cross section of the special-shaped steel 35. The special-shaped steel 35 moves forward at a constant speed under the action of external traction force, and passes through the multi-directional constraint space formed by the upper straightening roller 15, the lower straightening roller 10, the first side straightening roller 32, and the second side straightening roller 33 in sequence. Each straightening roller rotates freely around the sliding bearing under the friction of the special-shaped steel 35, which transforms the sliding friction into rolling friction, reduces the straightening resistance, and avoids surface scratches.

[0081] During the straightening process, the upper straightening roller 15 and the lower straightening roller 10 jointly apply a vertical constraint force. When the profiled steel 35 is bent in the vertical direction, the bent part is forced to compress when passing through the gap of the straightening rollers, causing the fibers at the bent part to undergo plastic elongation or compression, thereby correcting it to a straight state. At the same time, the first side straightening roller 32 and the second side straightening roller 33 apply lateral constraint forces from the left and right sides. When the profiled steel 35 undergoes lateral bending or cross-sectional torsion, the bent part generates greater contact pressure with the side straightening roller. The side straightening roller pushes the profile back to the center position through the reaction force, achieving lateral straightening. The first side straightening roller 32 and the second side straightening roller 33 can independently control the extension length and tilt angle, and make precise adjustments for different pressure requirements on different sides to avoid new side bending due to excessive pressure on one side.

[0082] Under the synergistic action of multiple straightening rollers, the profiled steel 35 is repeatedly straightened at multiple points in the vertical and horizontal directions during its forward movement. Local bending and twisting are gradually reduced, and finally, a finished product with a high degree of straightness and precise cross-sectional shape is obtained at the exit end. Throughout the process, the control console uses the first servo motor 6, the second servo motor 20, and the third servo motor 29 to precisely adjust the height of the upper straightening roller 15, the extension length of the side straightening rollers, and the contact angle. No machine stop is required for adjustment. It can process profiled steel 35 in batches or cut to a fixed length, achieving efficient cold stretching and straightening of beryllium nickel copper alloy profiles. This eliminates residual stress and geometric deviations generated during the stretching process and meets the stringent quality requirements of profiles in high-precision fields.

[0083] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A cold stretching and straightening device for beryllium nickel copper alloy profiles, comprising a first side plate (1), a first lifting plate (11), and a fine-tuning plate (16), characterized in that: The first side plate (1) is fixed with the first servo motor (6) by the fixed platform (4) at the top. The first screw (8) at the front end of the first servo motor (6) is connected to the first screw hole (13) of the first lifting plate (11) and the second lifting plate (12). The fine adjustment plate (16) on the outside of the first lifting plate (11) and the second lifting plate (12) is connected to the first side straightening roller (32) and the second side straightening roller (33) through the first mechanical arm (22), the second mechanical arm (23) and the rotating arm (27). The second servo motor (20) inside the first mechanical arm (22) is connected to the second mechanical arm (23) through the second screw (21). The third servo motor (29) on the outside of the second mechanical arm (23) is connected to the rotating arm (27) through the connecting shaft (30). The rotating arm (27) is connected to the first side straightening roller (32) and the second side straightening roller (33) through the rotating shaft (31). Among them, at least four fine adjustment plates (16) are provided on the outer side of the first lifting plate (11) and the second lifting plate (12). The fine adjustment plates (16) are provided between adjacent first connecting rods (9). The outer wall of the fine adjustment plate (16) is provided with symmetrically distributed first connecting holes (17). The outer wall of the fine adjustment plate (16) is in contact with the outer wall of the two bases (18). The outer wall of the base (18) is provided with second connecting holes (19). The first connecting holes (17) and the second connecting holes (19) are concentrically aligned. Bolts pass through the first connecting holes (17) and the second connecting holes (19) to fix the two bases (18) to the upper and lower ends of the fine adjustment plate (16) respectively. The bases (18) are connected to the rear end of the first robotic arm (22). The first robotic arm (22) has a rectangular groove at its front end. The bottom of the inner wall of the rectangular groove is connected to the second servo motor (20). The front end of the second servo motor (20) is connected to the second screw (21). The inner wall side of the rectangular groove of the first robotic arm (22) is in contact with the outer wall side of the second robotic arm (23). The rear end of the outer wall of the second robotic arm (23) has a second screw hole (26). The second screw (21) is connected to the second screw hole (26) of the second robotic arm (23). The second robotic arm (23) has symmetrical support plates (24) on both sides of its front end. The outer side of the support plate (24) has a round hole (25). The round hole (25) of the support plate (24) is concentrically aligned with the center hole on the side of the connecting cylinder (28). The connecting cylinder (28) is located between the two support plates (24). The third servo motor (29) is located on the outer side of the support plate (24). The connecting shaft (30) at the front end of the third servo motor (29) passes through the round hole (25) of the support plate (24) and is connected to the center hole of the connecting cylinder (28). The locking block on the outside of the connecting shaft (30) is engaged with the locking groove on the inner wall of the center hole. The connecting cylinder (28) is connected to the rear end of the rotating arm (27). The rotating arm (27) is connected to the first side straightening roller (32) and the second side straightening roller (33) through the rotating shaft (31).

2. The cold stretching and straightening equipment for beryllium nickel copper alloy profiles according to claim 1, characterized in that: The first side plate (1) and the second side plate (2) are set at the top of the outer wall of the base (3). At least five first connecting rods (9) are provided between the first side plate (1) and the second side plate (2). One end of the first connecting rod (9) is connected to the outer wall of the first side plate (1), and the other end of the first connecting rod (9) is connected to the second side plate (2). The first connecting rod (9) is connected to the lower straightening roller (10) through a sliding bearing. The outer wall of the lower straightening roller (10) is in contact with the lower surface of the profiled steel (35).

3. The cold stretching and straightening equipment for beryllium nickel copper alloy profiles according to claim 2, characterized in that: The first side plate (1) and the second side plate (2) are symmetrically arranged along the central axis of the base (3). The top of the first side plate (1) and the second side plate (2) are provided with two fixed platforms (4). The four corners of the top of the outer wall of the fixed platform (4) are provided with first fixing holes. The top of the outer wall of the fixed platform (4) is attached to the bottom of the outer wall of the fixed plate (7). The top of the outer wall of the fixed plate (7) is provided with second fixing holes. The bolt passes through the first fixing holes and the second fixing holes to fix the fixed plate (7) to the top of the outer wall of the fixed platform (4). The top of the outer wall of the fixed plate (7) is connected to the first servo motor (6). The first servo motor (6) is connected to the first screw (8). The top of the outer wall of the fixed platform (4) is provided with a through hole (5). The first screw (8) at the bottom of the first servo motor (6) passes through the through hole (5) and is connected to the first lifting plate (11) and the second lifting plate (12). The outer wall of the first screw (8) and the inner wall of the through hole (5) have an annular space gap.

4. The cold stretching and straightening equipment for beryllium nickel copper alloy profiles according to claim 3, characterized in that: The first lifting plate (11) and the second lifting plate (12) are the same size. The first lifting plate (11) and the second lifting plate (12) are symmetrically arranged along the central axis of the base (3). The outer side of the first lifting plate (11) is provided with at least five receiving grooves (34). The receiving grooves (34) are used to accommodate the lower straightening roller (10). The two first servo motors (6) on the first side plate (1) are connected to the first lifting plate (11) through the first screw (8) at the bottom end. The top of the outer wall of the first lifting plate (11) is provided with two first screw holes (13). The two first screw holes (13) are respectively connected to the first screws (8) at the bottom end of the two first servo motors (6). The two first screws (8) on the second side plate (2) are connected to the two first screw holes (13) at the top end of the second lifting plate (12). The threads on the outside of the first screws (8) mesh with the thread grooves on the inner wall of the first screw holes (13).

5. The cold stretching and straightening equipment for beryllium nickel copper alloy profiles according to claim 1, characterized in that: The third servo motor (29) is connected to the control console via a connecting line. The control console is connected to the first servo motor (6) and the second servo motor (20) via a connecting line. The control console adjusts the height of the upper straightening roller (15), the first side straightening roller (32), and the second side straightening roller (33) via the first servo motor (6). The control console adjusts the extension length of the first side straightening roller (32) and the second side straightening roller (33) via the second servo motor (20). The control console adjusts the contact angle between the first side straightening roller (32) and the second side straightening roller (33) and the special-shaped steel (35) via the third servo motor (29).

6. The cold stretching and straightening equipment for beryllium nickel copper alloy profiles according to claim 5, characterized in that: The first side straightening roller (32) and the second side straightening roller (33) are in contact with the outer wall of the irregular structure on both sides of the irregular steel (35). The irregular steel (35) is set between the first lifting plate (11) and the second lifting plate (12). At least five second connecting rods (14) are provided on the outer wall side of the first lifting plate (11) and the second lifting plate (12). The second connecting rods (14) are connected to the upper straightening roller (15) through sliding bearings. The upper straightening roller (15) is in contact with the upper surface of the irregular steel (35).

7. A cold drawing and straightening process for beryllium nickel copper alloy profiles, applicable to the cold drawing and straightening equipment for beryllium nickel copper alloy profiles as described in claim 6, characterized in that: The process includes the following steps: S1. Vertical Straightening Roller Adjustment: Place the shaped steel (35) on the upper surface of the lower straightening roller (10), and start the first servo motor (6) synchronously through the control console. The first servo motor (6) drives the first screw (8) to rotate. Through the spiral transmission between the first screw (8) and the first screw hole (13) on the first lifting plate (11) and the second lifting plate (12), the first lifting plate (11) and the second lifting plate (12) are driven to descend in the vertical direction, so that the outer surface of the upper straightening roller (15) is in close contact with the upper surface of the shaped steel (35), and at the same time, the outer surface of the lower straightening roller (10) is in close contact with the lower surface of the shaped steel (35), thus completing the clamping in the vertical direction. S2. Adjustment of the position and angle of the side straightening roller: Loosen the bolts that pass through the first connecting hole (17) of the fine adjustment plate (16) and the second connecting hole (19) of the base (18), move the base (18) vertically, so that the vertical height of the first side straightening roller (32) and the second side straightening roller (33) connected to the rear end of the base (18) is aligned with the target area on the side of the profiled steel (35), and then tighten the bolts to fix the base (18) on the fine adjustment plate (16); The third servo motor (29) is started by the console. The third servo motor (29) drives the connecting shaft (30) to rotate. The connecting shaft (30) drives the rotating arm (27) to rotate through the connecting cylinder (28), thereby adjusting the tilt angle of the first side straightening roller (32) and the second side straightening roller (33) so that the tilt angle is consistent with the tilt angle of the side of the special steel (35). The second servo motor (20) is started by the console. The second servo motor (20) drives the second screw (21) to rotate. The second screw (21) engages with the second screw hole (26) on the second robotic arm (23), causing the second robotic arm (23) to extend straight outward from the rectangular slot of the first robotic arm (22), so that the first side straightening roller (32) and the second side straightening roller (33) move horizontally to the side of the shaped steel (35) until the outer surface of the side straightening roller is in close contact with the side of the shaped steel (35). S3. Start the external traction device to make the special-shaped steel (35) move forward at a constant speed and pass through the straightening channel composed of the upper straightening roller (15), the lower straightening roller (10), the first side straightening roller (32) and the second side straightening roller (33) in sequence. Each straightening roller rotates freely around the sliding bearing under the friction of the special-shaped steel (35) and applies multiple points of repeated straightening force in the vertical and horizontal directions to the special-shaped steel (35) to eliminate the residual stress and geometric bending generated in the special-shaped steel (35) during the cold stretching process, and finally obtain a straight finished product.

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