A wire non-destructive straightening device and a wire non-destructive straightening method

Abstract

A non-destructive wire straightening device and method are disclosed. The non-destructive wire straightening device includes a fixing mechanism, a tightening and conveying mechanism, and a straightening mechanism. The fixing mechanism includes a straightening frame and a fixing component. The tightening and conveying mechanism includes multiple tightening rollers arranged circumferentially along the wire, and a first driving component that drives the multiple tightening rollers to rotate and / or stop. The multiple tightening rollers collectively press against the circumference of the wire and apply force to the wire in a direction away from the fixing component, thereby tightening the wire. The straightening mechanism includes a straightening component movably mounted on the straightening frame and pressing against the wire, and an adjusting component that drives the movement of the straightening component. When the straightening mechanism presses down on the bent portion of the wire, the tightening and conveying mechanism can compensate for changes in wire length caused by straightening deformation in real time, ensuring that the wire is always in the optimal stress state. This effectively avoids problems such as straightening loss and bending dispersion common in traditional straightening processes, and significantly improves straightening accuracy, wire straightness, and linearity retention.

Description

Technical Field

[0001] This invention belongs to the technical field of wire straightening, specifically relating to a non-destructive wire straightening device and a non-destructive wire straightening method. Background Technology

[0002] In the processing and production of slender materials such as metal wires, cables, and optical fibers, wire straightening is a crucial process. The quality of straightening directly affects the subsequent processing performance and reliability of the wire. Currently, the most common wire straightening method is mechanical compression.

[0003] For example, invention patent application CN109248974A discloses a wire straightening device, including a horizontally placed long rectangular support. The long rectangular support is provided with a vertical straightening roller group and a horizontal straightening roller group along its length. The vertical straightening roller group includes a plurality of first straightening rollers disposed on the side of the long rectangular support. The top surface of the long rectangular support is provided with a vertical adjustment bracket, and the side of the vertical adjustment bracket is provided with a plurality of second straightening rollers. The first straightening rollers and the second straightening rollers are arranged with an interlaced gap, which can straighten the wire from multiple directions, improve the straightening effect, and facilitate subsequent processing.

[0004] For example, utility model patent CN209918605U discloses a simple straightening machine for correcting shaft cores, including a rectangular base with a horizontally arranged groove in the middle. A support bracket is provided on the upper surface of the base, and a slider that cooperates with the groove is provided on the bottom surface of the support bracket. The support bracket is L-shaped, and its top has a V-shaped notch for placing the shaft core. A longitudinal beam, shaped like an inverted L, is provided on one side of the middle of the base. A pressing device for correcting the shaft core is provided at the upper end of the longitudinal beam, and a micrometer is also provided on one side of the longitudinal beam. This simple straightening machine for correcting shaft cores has the advantages of reasonable structure and simple and convenient operation. This application directly applies pressure to the bent part of the wire through the pressing device, restoring it to a straight state.

[0005] However, the aforementioned traditional pressure straightening method causes significant wear on the outer surface of the wire and insufficient release of internal stress. It is difficult to completely straighten the original bent sections, often transforming a single large-curvature bend into multiple dispersed small-curvature bends. This "bending dispersion" problem severely affects the straightness accuracy of the wire. Consequently, the straightened wire may fail to meet the straightness requirements of high-precision applications. Summary of the Invention

[0006] To address the aforementioned problems in the prior art, this invention provides a non-destructive wire straightening device and a non-destructive wire straightening method. By employing multi-stage straightening methods, including pre-straightening and fine straightening, it not only effectively reduces unwanted wear on the wire during the straightening process but also fully releases the internal stress of the wire, avoids bending dispersion, and significantly improves the technical effects such as straightening accuracy, wire straightness, and linearity retention.

[0007] In one aspect of the present invention, a non-destructive wire straightening device is provided, comprising a fixing mechanism, a tightening and conveying mechanism, and a straightening mechanism, wherein:

[0008] The fixing mechanism includes a straightening frame and a fixing component disposed on one side of the straightening frame and fixing one end of the wire;

[0009] A tightening conveying mechanism is located on the other side of the straightening frame. It includes multiple tightening rollers arranged along the circumference of the wire, a first driving member that drives the multiple tightening rollers to rotate and / or stop, and the multiple tightening rollers together press against the circumference of the wire and apply force to the wire in a direction away from the fixing component so that the wire is tightened.

[0010] A straightening mechanism includes a straightening element movably mounted on a straightening frame and pressing against the wire, and an adjustment assembly that drives the straightening element to move.

[0011] With the above technical solution, through the synergistic action of the fixing components and the tightening conveying mechanism, when the straightening mechanism presses down on the bent part of the wire, the tightening conveying mechanism can compensate in real time for the change in wire length caused by straightening deformation, and ensure that the wire is always in the optimal stress state through continuous tension adjustment. This effectively avoids the "bending dispersion" problem common in traditional straightening processes, that is, the phenomenon that a single large curvature bend is transformed into multiple small curvature bends, significantly improving straightening accuracy and wire straightness.

[0012] Preferably, the tightening conveying mechanism further includes:

[0013] A tensioning frame, with a plurality of tensioning rollers movably connected to the tensioning frame to enable the plurality of tensioning rollers to move toward and / or away from the center of the wire;

[0014] A second drive unit is connected to the tensioning frame and the plurality of tensioning rollers to drive the plurality of tensioning rollers to move.

[0015] With the above technical solution, the movement of the tightening rollers is controlled by the second driving component, and the radial position of multiple tightening rollers can be adjusted appropriately according to the wire diameter to ensure accurate adaptation to wires of different thicknesses. At the same time, it is easy to control the clamping force of the tightening conveying mechanism on the wire, ensuring sufficient traction force while avoiding excessive pressure that could cause wire deformation, thus significantly improving the versatility and straightening quality of the device.

[0016] Preferably, the fixing assembly includes a fixing member, a movable member, and a locking member that are fitted together on one side of the straightening frame; the locking member connects the fixing member and the movable member and adjusts the gap between them to clamp / release the wire.

[0017] Preferably, the fixed part and the movable part each include a plate-like structure with a semi-circular hole, and the locking part includes a screw that passes through the movable part and is threadedly engaged with it. The bottom end of the screw is rotatably connected to the fixed part. By rotating the screw, the movable part moves closer to / away from the fixed part, thereby adjusting the distance between the fixed part and the movable part to clamp or loosen the wire.

[0018] Preferably, the wire non-destructive straightening device further includes a pre-straightening mechanism disposed upstream of the fixing mechanism. The pre-straightening mechanism includes a pre-straightening frame, and a plurality of pre-straightening rods and a pre-straightening adjustment assembly disposed on the pre-straightening frame.

[0019] The pre-straightening rod includes an upper pre-straightening rod that is slidably connected to the upper plate of the pre-straightening frame and a lower pre-straightening rod that is slidably connected to the lower plate of the pre-straightening frame. The upper and lower pre-straightening rods are spaced apart along the wire travel direction.

[0020] The pre-correction adjustment assembly moves each pre-correction rod in a controlled manner, so that the upper pre-correction rod presses against the wire from top to bottom, and the lower pre-correction rod presses against the wire from bottom to top.

[0021] Preferably, the pre-straightening rods are arranged parallel to each other in the vertical direction along the wire travel direction. The pre-straightening rods are moved and positioned in a controlled manner by a pre-straightening adjustment assembly. Along the wire travel direction, the wire is positioned by the staggered support of the upper and lower pre-straightening rods at intervals. When the pre-straightening operation begins, at least some of the pre-straightening rods extend towards the wire, causing at least a portion of the wire to be pressed and deviated from its travel direction. On the one hand, the staggered pressure of the pre-straightening rods on the wire in the vertical plane can transform the slight horizontal curvature of the wire into a slight vertical curvature, completing the horizontal pre-straightening operation at different positions of the wire. On the other hand, the extension of the wire in different directions within the vertical plane can effectively eliminate internal stress in the wire, providing a fundamental guarantee for downstream fine straightening operations.

[0022] Preferably, each pre-straightening rod has a guide groove at its end facing the wire. The inner surface of the guide groove is smooth and matches the wire, so that the wire will not be scratched during travel and during the pre-straightening process when the pre-straightening rod extends to press against the wire.

[0023] Preferably, the straightening component is provided with a smoothing mechanism;

[0024] The smoothing mechanism includes two smoothing rollers and a third drive unit that drives the two smoothing rollers to rotate in opposite directions;

[0025] The two smoothing rollers apply force to the wire when pressing it against it, so that the wire is smoothed.

[0026] By employing the above technical solution, a more optimized straightening effect is achieved through the synergistic action of the smoothing mechanism and the tightening conveying mechanism. Specifically, the two counter-rotating smoothing rollers in the smoothing mechanism not only directly press down on the bent portion of the wire, but also act directly on the bent portion of the wire through the special motion trajectory of the two smoothing rollers, applying force to the wire from the first axial direction (basically along the wire's travel direction) and the second axial direction (basically along the direction perpendicular to the first axial direction), respectively. This produces a more effective flattening effect than the tightening conveying mechanism, and this dynamic straightening method can more thoroughly flatten and smooth the bent portion of the wire. At the same time, the tightening conveying mechanism applies uniform tension to the wire through multiple tightening rollers, providing stable basic support for the straightening process. The synergistic cooperation of the two forms a composite action mode of dynamic flattening + constant tension support, which can not only more effectively eliminate stress concentration at the original bent portion, but also prevent the generation of new stress deformation during the straightening process. Compared with the traditional unidirectional pressure method, it significantly improves the straightening uniformity and accuracy.

[0027] Preferably, the adjustment component includes:

[0028] A movable base is mounted on the straightening frame and can drive the straightening components to move along the direction of wire travel;

[0029] A lifting shaft is movably mounted on the movable base, and the movable base is provided with a first adjusting component that is connected to the lifting shaft and controls the lifting shaft's movement.

[0030] A pressure plate is mounted on the lifting shaft and moves with the lifting shaft to press down on the straightening member.

[0031] Preferably, the wire non-destructive straightening device further includes a support mechanism corresponding to the straightening component, the support mechanism including:

[0032] The support component is movably mounted on the straightening frame;

[0033] The fourth driving component is used to drive the support component to rise and / or fall, and to support the wire when the straightening component presses against the wire.

[0034] The fifth driving component is used to drive the support component and the fourth driving component to move along the wire travel direction.

[0035] With the above technical solution, the support mechanism provides support force when the straightening component presses down on the wire, ensuring that the wire maintains a stable stress state throughout the straightening process. This support function, together with the straightening mechanism and the tightening conveying mechanism, further synergizes. When the straightening component presses down on the bent part of the wire, the support mechanism provides reverse support force, and the tightening conveying mechanism maintains the wire tension. The three work together to effectively prevent the wire from shifting or undergoing secondary deformation during the straightening process. Furthermore, through the movable design of the base and the fifth drive component, the adjustment components and support mechanism have more straightening operation points along the wire's travel direction. If necessary, multiple sets of adjustment components and their corresponding support mechanisms can be installed on the straightening frame.

[0036] Preferably, the straightening element includes:

[0037] A straightening sleeve is movably mounted on a straightening frame, and the smoothing mechanism is located at the bottom of the straightening sleeve;

[0038] A straightening rod is movably disposed within the straightening sleeve, with its head located between the two smoothing rollers. The adjusting assembly further includes a second adjusting member disposed on the pressure plate, the second adjusting member abutting against the top of the straightening rod to control the straightening rod to press against the bent portion of the wire.

[0039] With the above technical solution, the combination of the pressure plate, lifting shaft and first adjusting component realizes the adjustment of the position of the straightening sleeve. The split structure of the straightening sleeve and the straightening rod, together with the second adjusting component, forms a dual pressure on the bent part of the wire. That is, the straightening sleeve drives the smoothing mechanism to provide overall downward pressure, realizing the pressure and smoothing of the bent part of the wire. The straightening rod applies precise point pressure to the bent part between the two smoothing rollers of the smoothing mechanism. The combination of the two further improves the straightening accuracy of the wire.

[0040] The present invention may also provide a pre-inspection unit upstream of the straightening device and a detection unit downstream of the straightening device. Commonly used wire bending detection equipment in the field can be used, such as mechanical sleeve detection equipment, laser detection equipment, image capture detection equipment, etc.

[0041] In a second aspect of the invention, a method for non-destructive straightening of wires using the aforementioned non-destructive wire straightening device is also provided, comprising the following steps:

[0042] S1. The wire is fed sequentially along the fixing mechanism, straightening mechanism and tightening conveying mechanism in a step-by-step manner. One end of the wire is fixed by the fixing component of the fixing mechanism, and the wire is tightened from the other end by the tightening conveying mechanism.

[0043] S2. Use the adjustment component to control the up and down movement of the straightening component so that the straightening component presses against the bent part of the wire. The tightening roller of the tightening conveying mechanism works with the straightening component to tighten the wire in real time, so that the wire is straightened.

[0044] Preferably, in step S1, one end of the wire is placed between multiple rollers of the mobile phone conveying mechanism, and the first driving component is activated. The first driving component drives multiple rollers to rotate, and the multiple rollers together press against the periphery of the wire and apply force to the wire in the direction away from the fixed component, so that the wire is tightened.

[0045] Preferably, before step S1, the wire is pre-straightened using a pre-straightening mechanism upstream of the fixing mechanism, including the following steps:

[0046] Step 1: The wire is input into the pre-straightening frame of the pre-straightening mechanism, and is supported and positioned along the wire's travel direction by several upper pre-straightening rods that are slidably connected to the upper frame plate of the pre-straightening frame and several lower pre-straightening rods that are slidably connected to the lower frame plate of the pre-straightening frame.

[0047] Step 2: Using the pre-straightening adjustment component, at least part of the pre-straightening rod is moved in a controlled manner, so that the upper pre-straightening rod presses against the wire from top to bottom and the lower pre-straightening rod presses against the wire from bottom to top, so that at least part of the wire deviates from the wire's direction of travel, thereby pre-straightening the wire and releasing internal stress.

[0048] Step 3: Return the moved pre-correction rod to its original position, and use the tightening conveyor mechanism to apply force to the wire in the direction away from the fixed assembly, so that the wire is conveyed downstream in a step-by-step manner into the fixed mechanism.

[0049] Preferably, the pre-straightening operation and the downstream straightening operation are performed simultaneously. That is, while the second section of wire is being pre-straightened upstream, the first section of wire, which has already undergone pre-straightening, is being straightened downstream. This invention, through a two-stage straightening process, not only fully releases the internal stress of the wire and avoids bending dispersion, significantly improving straightening accuracy, wire straightness, and linearity retention, but also ensures high process efficiency.

[0050] The technical solution of the present invention includes at least the following beneficial technical effects:

[0051] (1) In the precision straightening operation, the present invention firmly clamps and tensions the wire through the fixing component and the tightening conveying mechanism, providing a stable reference support for the straightening process; the straightening mechanism applies precise pressure to the bent part of the wire to directly eliminate the main bending deformation of the wire; the double smoothing roller design with opposite rotation of the smoothing mechanism flattens the wire during the straightening process to eliminate local minor deformation; the support mechanism provides dynamic support for the straightening process through the liftable support component to prevent the wire from bending again during the straightening process.

[0052] (2) The present invention also includes a pre-correction step before the fine straightening operation. By controlling the adjustment of several pre-correction rods through the pre-correction adjustment component, the pre-correction rods can perform non-destructive contact positioning and pressure pre-correction of the wire. Through the cooperation of the pre-correction adjustment component and the pre-correction rods, the bending of the wire (especially the slight bending of the horizontal plane) is pre-corrected, and the internal stress of the bending part of the wire is eliminated in advance, which facilitates the efficient execution of the subsequent automated fine straightening operation.

[0053] (3) The present invention effectively distributes the straightening amount and straightening intensity of each stage through multi-stage straightening methods such as pre-straightening and fine straightening. Combined with the smoothness design of each component of the device, it can effectively reduce the unwanted wear on the wire during the straightening process. No subsequent surface grinding or polishing steps are required, which is conducive to providing high-quality metal / alloy wire. Attached Figure Description

[0054] The invention will now be described with reference to the accompanying drawings. In the drawings:

[0055] Figure 1 This is a schematic diagram of the overall structure of the wire non-destructive straightening device of the present invention;

[0056] Figure 2 This is a partially enlarged schematic diagram of the wire non-destructive straightening device of the present invention;

[0057] Figure 3 This is a schematic diagram of the tightening and conveying mechanism of the present invention;

[0058] Figure 4 This is a schematic diagram of the straightening rod of the present invention;

[0059] Figure 5 This is a schematic diagram of the pre-correction mechanism of the present invention;

[0060] Figure 6 This is a schematic diagram of the pre-correction adjustment component of the present invention.

[0061] List of reference numerals in the attached diagram:

[0062] 1. Fixing mechanism; 11. Straightening frame; 121. Fixing component; 122. Moving component; 123. Locking component;

[0063] 2. Tightening conveyor mechanism; 21. Tightening frame; 22. Second drive component; 23. Tightening roller; 24. First drive component;

[0064] 3. Straightening mechanism; 31. Straightening component; 311. Straightening sleeve; 312. Straightening rod; 313. Return spring; 32. Adjusting assembly;

[0065] 4. Smoothing mechanism; 41. Smoothing roller; 42. Third drive component;

[0066] 5. Supporting mechanism; 51. Supporting component; 52. Fourth driving component;

[0067] 6. Pre-correction mechanism; 61. Pre-correction frame; 62. Pre-correction rod; 63. Pre-correction adjustment assembly; 631. Fixed base; 632. Sliding shaft; 633. Coarse adjustment knob; 634. Fixed plate; 635. Fine adjustment device; 636. Guide groove; 637. Connecting arc groove. Detailed Implementation

[0068] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0069] It should be noted that in the description of this invention, terms such as "upper," "lower," "vertical," "horizontal," and "inner," indicating directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element 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," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0070] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0071] The quality of wire straightening directly affects the subsequent processing performance and reliability of the wire. To address the problems of bending dispersion caused by traditional wire straightening methods, this invention provides a non-destructive wire straightening device, particularly for straightening metal or alloy wires. (Refer to...) Figure 1-4The system comprises a fixing mechanism 1, a tightening and conveying mechanism 2, a straightening mechanism 3, a smoothing mechanism 4, a support mechanism 5, and a control system (not shown in the figure). The fixing mechanism securely clamps one end of the wire, providing stable reference support for the straightening process. The tightening and conveying mechanism 2 uses multiple circumferentially arranged tightening rollers 23 to apply uniform tension to the wire, ensuring that the wire maintains appropriate tension throughout the straightening process. The straightening mechanism 3 uses adjustable pressure bars to precisely press down on the bent parts of the wire, directly eliminating the main bending deformation. The smoothing mechanism 4 employs a design of counter-rotating double smoothing rollers 41 to flatten the wire during the straightening process, eliminating minor local deformations. The support mechanism 5 provides dynamic support for the straightening process through liftable support components 51, preventing secondary bending of the wire during straightening. The control system coordinates the actions of each mechanism, achieving intelligent adjustment of straightening parameters and precise control of the process.

[0072] Specifically, in the exemplary embodiment, the fixing mechanism 1 includes a straightening frame 11 and a fixing component, wherein the straightening frame 11 is used to support and fix other components in the device; and the fixing component is used to fix one end of the wire during the wire straightening process.

[0073] Furthermore, the straightening frame 11 includes a support base, columns fixed on both sides of the support base, and a crossbeam fixed above the support base by the columns. The straightening frame 11 is formed as a rectangular frame structure.

[0074] Furthermore, the fixing assembly includes a fixing member 121, a movable member 122, and a locking member 123. The fixing member 121 is formed as a plate-like structure including a semi-circular hole, and one side is detachably connected to the straightening frame 11. The movable member 122 is also formed as a plate-like structure including a semi-circular hole, which, when assembled with the fixing member 121, forms a circular through-hole structure for the wire to pass through, and can clamp and / or release the wire. The locking member 123 is specifically a screw, which passes through the top of the movable member 122 and is threadedly engaged with it. The bottom end of the screw is rotatably connected to the fixing member 121, thereby connecting the fixing member 121 and the movable member 122 and adjusting their gap. Furthermore, rubber pads are fixed inside the semi-circular holes of the fixing member 121 and the movable member 122 to prevent deformation of the wire when the fixing assembly clamps it.

[0075] Furthermore, the straightening frame 11 is equipped with a rotation drive (not shown in the figure) capable of driving the locking member 123 to rotate, thereby improving the automated straightening capability of the device. The rotation drive is configured as a servo motor and a gear transmission assembly, which is prior art and will not be described in detail here.

[0076] Specifically, in the exemplary embodiment, reference is made to Figure 2 and Figure 3The tightening and conveying mechanism 2 includes a tightening frame 21, a second driving member 22, tightening rollers 23, and a first driving member 24. The tightening frame 21 is a circular frame structure, with one side fixedly connected to the straightening frame 11. The second driving member 22 is specifically a servo cylinder assembly. The cylinder body of the servo cylinder is fixed to the inner side of the tightening frame 21, and the piston rod of the servo cylinder is positioned towards the center of the tightening frame 21. The tightening rollers 23 are movably connected to the tightening frame 21 via the second driving member 22, allowing the tightening rollers 23 to move towards and / or away from the center of the wire. By controlling the movement of the tightening rollers 23 through the second driving member 22, the radial positions of multiple tightening rollers 23 can be appropriately adjusted according to the wire diameter, ensuring precise adaptation to wires of different thicknesses. Simultaneously, it facilitates control of the clamping force of the tightening and conveying mechanism 2 on the wire, ensuring sufficient traction while avoiding excessive pressure that could cause wire deformation, significantly improving the versatility and straightening quality of the device.

[0077] Furthermore, there are three tightening rollers 23 arranged in a circular array around the center of the tightening frame 21, allowing the three tightening rollers 23 to be arranged along the circumference of the wire. The tightening rollers 23 are rotatably mounted on the piston rod of the servo cylinder. Through the extension and retraction of the servo cylinder assembly, the three tightening rollers 23 can abut against and / or disengage from the wire. The first driving component 24 is a servo motor assembly, which is connected to the three tightening rollers 23 and drives the rotation and / or stopping of the tightening rollers 23. When the three tightening rollers 23 abut against the circumference of the wire and apply force to the wire in the direction away from the fixing component, the wire is tightened. Through the synergistic action of the fixing component and the tightening conveying mechanism 2, when the straightening mechanism 3 presses down on the bent part of the wire, the tightening conveying mechanism 2 can compensate for the change in wire length caused by the straightening deformation in real time, and ensure that the wire is always in the optimal stress state through continuous tension adjustment. This effectively avoids the bending dispersion problem common in traditional straightening processes, namely the phenomenon that a single large curvature bend is transformed into multiple small curvature bends, significantly improving straightening accuracy and wire straightness.

[0078] It should be explained that the number of tightening rollers 23 is not unique. For example, in addition to the three shown in the exemplary embodiment, there can be two, four, or more, as long as they can provide tightening force to the wire. Furthermore, the tightening conveying mechanism 2 is not fixed. For example, the tightening conveying mechanism 2 can be a constant force spring drum, with the wire connected to the free end of the spring via a clamping device. The spring provides a constant return force, keeping the wire always under tension. The tightening conveying mechanism 2 can also be a servo motor + gripper + lead screw tensioning mechanism, where the gripper fixes the end of the wire, and the servo motor drives the lead screw to linearly stretch the gripper, suitable for high-precision dynamic adjustment requirements.

[0079] Specifically, in the exemplary embodiment, reference is made to Figure 2 and Figure 4The straightening mechanism 3 includes a straightening member 31 and an adjusting component 32. The straightening member 31 is movably mounted on the straightening frame 11 and is used to directly press against the bent part of the wire; the adjusting component 32 is mounted on the straightening frame 11 and connected to the straightening member 31 to drive the movement of the straightening member 31.

[0080] Specifically, the straightening member 31 is formed as a rectangular column, which is movably connected to the straightening frame 11 in the vertical direction, thereby pressing against the bent portion of the wire. Further, the straightening member 31 includes a straightening sleeve 311 and a straightening rod 312. The straightening sleeve 311 is movably mounted on the straightening frame 11, and the straightening rod 312 is movably mounted inside the straightening sleeve 311. This arrangement allows for initial coarse straightening of the bent portion of the wire through the straightening sleeve 311, i.e., applying a uniform macroscopic straightening force through a large contact surface to eliminate the main bending deformation of the wire. Subsequently, the straightening rod 312 inside performs supplementary straightening, i.e., precisely correcting the residual local bending after coarse straightening point-to-point, completely eliminating microscopic deformation. By applying pressure in stages, the amount of deformation can be precisely controlled, eliminating the internal stress of the bent portion of the wire in stages, further reducing the residual stress after straightening the wire.

[0081] Furthermore, in the exemplary embodiment, a rack is vertically arranged on the outside of the straightening sleeve 311, and a gear meshing with the rack is rotatably arranged inside the straightening frame 11. Under the static friction force of the meshing of the two, the straightening sleeve 311 can remain stationary without external force. Even further, a locking bolt for fixing the straightening sleeve 311 is provided on the straightening frame 11. The locking bolt is threaded through the straightening frame 11 and abuts against the side of the straightening sleeve 311 to achieve the loosening and / or locking of the straightening sleeve 311.

[0082] Furthermore, in the exemplary embodiment, a cylindrical cavity is formed inside the straightening sleeve 311, and a return spring 313 is provided inside the cavity. The return spring 313 is wrapped around the outer periphery of the straightening rod 312. An annular limiting part is integrally connected to the top of the straightening rod 312. The annular limiting part abuts against the top of the return spring 313. When an external force is applied to the straightening rod 312 and it moves downward, the annular limiting part compresses the return spring 313. When the external force disappears, the return spring 313 rebounds and causes the straightening rod 312 to retract into the straightening sleeve 311.

[0083] Specifically, in the exemplary embodiment, the adjustment assembly 32 includes a movable base (not shown in the figure), a lifting shaft (not shown in the figure), a first adjusting member (not shown in the figure), a pressure plate (not shown in the figure), and a second adjusting member (not shown in the figure). The movable base is driven by a servo motor and can move along the wire travel direction on the straightening frame 11. To ensure smooth and linear movement, the straightening frame 11 may be provided with a track or guide groove for the movable base to slide. The lifting shaft is slidably mounted on the movable base in the vertical direction. The first adjusting member is mounted on the movable base and connected to the lifting shaft to control the lifting and lowering of the lifting shaft. The pressure plate is fixed to the lifting shaft and can move up and down with the lifting shaft, pressing down on the straightening member 31. The second adjusting member abuts against the top of the straightening rod 312 to control the straightening rod 312 to press against the bent portion of the wire.

[0084] Furthermore, in the exemplary embodiment, the first adjusting component is specifically a servo cylinder, the cylinder body of which is fixed on the movable base, and its piston rod is connected to the lifting shaft, thereby controlling the movement of the lifting shaft and the pressure plate, and thus controlling the straightening component 31 to press against the wire; the second adjusting component is a servo cylinder, the cylinder body of which is fixed on the pressure plate, and its piston rod passes through the pressure plate and abuts against the top of the straightening rod 312, thereby controlling the downward pressing of the straightening rod 312.

[0085] Specifically, in the exemplary embodiment, the smoothing mechanism 4 includes two smoothing rollers 41 and a third drive member 42. The two smoothing rollers 41 are used to press against the wire, and the third drive member 42 is used to drive the two smoothing rollers 41 to rotate in opposite directions.

[0086] Furthermore, two smoothing rollers 41 are rotatably mounted at the bottom of the straightening sleeve 311 and positioned on both sides of the straightening rod 312, thereby replacing the bottom of the straightening sleeve 311 in pressing against the wire. On one hand, the two smoothing rollers 41 can replace the coarse straightening effect of the straightening sleeve 311 on the wire, that is, directly pressing down on the bent part of the wire. On the other hand, the two smoothing rollers 41 can rotate while pressing against the bent part of the wire. The special motion trajectory of the two smoothing rollers 41 directly acts on the bent part of the wire, applying force to the bent part of the wire from the first axial direction (basically along the wire's travel direction) and the second axial direction (basically along the direction perpendicular to the first axial direction) to smooth the wire. This dynamic straightening method can more thoroughly smooth out the bent part of the wire and produce a more effective flattening effect than the rolling and tensioning method of the tightening conveying mechanism 2. At the same time, the tightening conveying mechanism 2 provides a stable basic support for the straightening process by applying uniform tension to the wire through multiple tightening rollers 23. The synergistic effect of the two forms a combined dynamic flattening and constant tension support mode, which can not only more effectively eliminate stress concentration in the original bending part, but also prevent new stress deformation from occurring during the straightening process. Compared with the traditional unidirectional pressure method, it significantly improves the straightening uniformity and accuracy.

[0087] Furthermore, the third driving component 42 is specifically a servo motor assembly, which is fixed on the straightening sleeve 311 and connected to the two smoothing rollers 41 to drive the two smoothing rollers 41 to rotate in opposite directions.

[0088] Specifically, in the exemplary embodiment, reference is made to Figure 1 and Figure 2 The movable support mechanism 5 is correspondingly arranged with the straightening member and includes a support member 51, a fourth drive member 52, and a fifth drive member (not shown). The support member 51 is formed into a rectangular block structure, which is movably mounted on the straightening frame 11 via the fourth drive member 52, thereby supporting the wire when the straightening member 31 presses against the wire. The fourth drive member 52 is specifically a cylinder, which drives the support member 51 to rise and fall through its extension and retraction movement, so that the support member 51 rises when straightening the wire and falls when conveying the wire.

[0089] The support mechanism 5 provides support force when the straightening member 31 presses down on the wire, ensuring that the wire maintains a stable stress state throughout the straightening process. This support function, together with the straightening mechanism 3 and the tightening and conveying mechanism 2, further synergizes. When the straightening member 31 presses down on the bent portion of the wire, the support mechanism 5 provides a reverse support force, and the tightening and conveying mechanism 2 maintains the wire tension. The three work together to effectively prevent the wire from shifting or undergoing secondary deformation during the straightening process. The fifth driving member drives the support member 51 and the fourth driving member 52 to move along the wire's travel direction, thereby coordinating with the horizontal movement of the straightening member 31.

[0090] Furthermore, the bottom of the tightening roller 23 of the tightening conveying mechanism 2, the smoothing roller 41 of the smoothing mechanism 4, the straightening rod 312, and the top of the support member 51 are all provided with matching grooves that are compatible with the shape of the wire, so as to prevent the wire from shifting laterally during the straightening process.

[0091] Specifically, in the exemplary embodiment, the present invention sets up a detection unit downstream of the straightening device, including a mechanical sleeve-type detection device and a wire input detection device, and monitors the friction / jamming between the wire and the sleeve during the wire input process. In practical applications, the wire straightened by the present invention generally does not exhibit the aforementioned equipment alarms caused by insufficient straightness. Alternatively, a pre-inspection unit can be set up upstream of the straightening device or downstream of the pre-straightening mechanism 6, and simultaneously send a bending identification signal to the control system. The control system determines the position of the straightening mechanism 3 and the timing of the straightening operation in advance based on parameters such as signal timing and wire travel speed, and sends the straightening signal to the straightening mechanism 3.

[0092] Specifically, in the exemplary embodiment, the control system (not shown in the figure) is a computer with an operation panel and a display screen for controlling the operation of other mechanisms and displaying their working status. Furthermore, the control system is electrically or signal-connected to the fixing mechanism 1, the tightening conveying mechanism 2, the straightening mechanism 3, the smoothing mechanism 4, and the support mechanism 5, and controls the fixing mechanism 1, the tightening conveying mechanism 2, the straightening mechanism 3, the smoothing mechanism 4, and the support mechanism 5 to achieve automated straightening.

[0093] Specifically, in the exemplary embodiment, reference is made to Figure 1 and Figure 5 The non-destructive wire straightening device also includes a pre-straightening mechanism 6, which comprises a pre-straightening frame 61, a pre-straightening rod 62, and a pre-straightening adjustment assembly 63. The pre-straightening frame 61 is used to support the pre-straightening rod 62 and the pre-straightening adjustment assembly 63. The pre-straightening mechanism 6 is located upstream of the straightening frame 11. Through the cooperation of the pre-straightening adjustment assembly 63 and the pre-straightening rod 62, it pre-straightens partial bends in the wire (especially minor bends in the horizontal plane) and eliminates internal stress in the bends of the wire in advance, facilitating subsequent automated precision straightening. The pre-straightening adjustment assembly 63 is used to control the movement of the pre-straightening rod 62.

[0094] Furthermore, the pre-straightening frame 61 is formed into a rectangular frame structure similar to the straightening frame 11, with openings on both sides for wire to enter and exit, and these openings are corresponding to the wire inlets of the straightening frame 11.

[0095] Furthermore, the pre-correction rod 62 is formed into a cylindrical shape and is slidably connected to the pre-correction frame 61 in the vertical direction. The pre-correction frame 61 is provided with a locking screw, which is threaded through the pre-correction frame 61 and abuts against the periphery of the pre-correction rod 62 to lock the pre-correction rod 62.

[0096] Furthermore, multiple pre-correcting rods 62 are provided, including an upper pre-correcting rod that is slidably connected to the upper plate of the pre-correcting frame 61 and a lower pre-correcting rod that is slidably connected to the lower plate of the pre-correcting frame 61. The upper and lower pre-correcting rods are spaced apart along the wire travel direction. The upper pre-correcting rod abuts against the wire from top to bottom, and the lower pre-correcting rod abuts against the wire from bottom to top.

[0097] Furthermore, each pre-correcting rod 62 has a guide groove on the end facing the wire. The inner surface of the guide groove is smooth and matches the wire, so that the wire will not be scratched during travel and during the pre-correction process when the pre-correcting rod 62 extends to press against the wire.

[0098] Furthermore, referring to Figure 5 and Figure 6 The pre-correction adjustment assembly 63 includes a fixed base 631, a sliding shaft 632, a coarse adjustment knob 633, a fixed plate 634, and a fine adjustment device 635.

[0099] The fixed base 631 has a U-shaped slot, which allows it to be moved / detached and locked onto the pre-correction frame 61.

[0100] The sliding shaft 632 is slidably connected to the fixed base 631 in the vertical direction; the coarse adjustment knob 633 is rotatably mounted on the fixed base 631 and connected to the sliding shaft 632 to control the lifting and rotation of the sliding shaft 632. This is prior art and will not be described in detail. The fixed plate 634 is horizontally mounted and connected to the sliding shaft 632 so that the sliding shaft 632 drives the fixed plate 634 to rotate and move downward to press against the top of the pre-correction rod 62, thereby performing coarse pre-correction on the wire; the fine adjustment device 635 is specifically a micrometer, which is fixed on the fixed plate 634. After the coarse pre-correction, by rotating the micrometer, the head of the micrometer can further press against the top of the pre-correction rod 62, thereby completing the fine pre-correction on the wire.

[0101] Furthermore, the fixing plate 634 is rotatably connected to the sliding shaft 632 in the horizontal direction so that it can easily press against other pre-correction rods 62 in adjacent positions. The fixing plate 634 is also provided with a rotating locking member suitable for locking the fixing plate 634 so as to release and lock the fixing plate 634 and the sliding shaft 632 as needed.

[0102] Furthermore, the fixed base 631 has guide grooves 636 on both sides to match the shape of the pre-correction rod 62. The guide grooves 636 are vertically oriented, allowing the pre-correction rod 62 to be placed into them during installation of the fixed base 631, thereby positioning the pre-correction adjustment assembly 63 and the pre-correction rod 62 to be adjusted, thus enhancing the stability of the wire pre-correction process. By rotating the fixed plate 634 relative to the sliding shaft 632, the pre-correction rods 62 on both sides are adjusted to a locking position on the fixed base 631.

[0103] Furthermore, in order to make the rotation switching more stable and avoid wear on the head of the fine adjustment device 635 to reduce accuracy, a connecting arc groove 637 is opened on the upper plate of the U-shaped slot between the two guide grooves 636. The connecting arc groove 637 allows the head of the fine adjustment device 635 to rotate through in the extended state, thereby smoothly switching at the top of the pre-correction rods 62 on both sides.

[0104] Furthermore, since the diameters of the pre-correction rods 62 in different pre-correction mechanisms 6 are not exactly the same, in order to improve the versatility of the pre-correction adjustment assembly 63, the guide groove 636 can also be designed with a larger radius of curvature. The pre-correction rod 62 only needs to be at least partially attached to the inner wall of the guide groove 636 to be positioned, thereby improving the versatility and adaptability of the pre-correction mechanism 6.

[0105] Furthermore, a movable base locking component is provided on the fixed base 631, which is a bolt. The fixed base 631 is fixed by passing through the fixed base 631 with threads and abutting against the pre-correction frame 61, so as to prevent the fixed base 631 from shifting during the pre-correction process.

[0106] Furthermore, the fixing plate 634 is provided with two clamping blocks that can clamp the micrometer body and a screw that passes through the two clamping blocks and controls the gap between the two clamping blocks, so as to realize the disassembly and replacement of the micrometer.

[0107] In a second aspect of the invention, a method for non-destructive straightening of wires using the above-mentioned non-destructive straightening device is also provided, comprising the following steps:

[0108] S0. The wire is pre-straightened using the pre-straightening mechanism 6 upstream of the fixed mechanism 1, including the following steps:

[0109] Step 1: The wire is fed into the pre-correction frame 61 of the wire stepping type input pre-correction mechanism 6, and is supported and positioned along the wire traveling direction by a number of upper pre-correction rods slidably connected to the upper frame plate of the pre-correction frame 61 and a number of lower pre-correction rods slidably connected to the lower frame plate of the pre-correction frame 61.

[0110] Step 2: Using the pre-straightening adjustment component 63, at least part of the pre-straightening rod 62 is moved in a controlled manner, so that the upper pre-straightening rod presses against the wire from top to bottom and the lower pre-straightening rod presses against the wire from bottom to top, so that at least part of the wire deviates from the wire's direction of travel, thereby pre-straightening the wire and releasing internal stress.

[0111] Step 3: Return the moved pre-correction rod 62 to its original position, and use the tightening conveyor 2 to apply force to the wire in the direction away from the fixed assembly, so that the wire is conveyed downstream in a step-by-step manner into the fixed mechanism 1;

[0112] S1. The wire is conveyed sequentially along the fixing mechanism 1, the straightening mechanism 3, and the tightening conveying mechanism 2 in a step-by-step manner. One end of the wire is fixed using the fixing component of the fixing mechanism 1, and the wire is tightened from the other end using the tightening conveying mechanism 2. Specifically, before the wire is conveyed, the screw is driven to rotate in the opposite direction by rotating the drive component, thereby loosening the fixing component 121 and the movable component 122. The tightening conveying mechanism 2 drives multiple tightening rollers 23 to rotate through the first drive component 24 to convey the wire by friction and convey it to the predetermined position. The screw is driven to rotate by rotating the drive component, thereby tightening the fixing component 121 and the movable component 122 to fix one end of the wire. The tightening conveying mechanism 2 tightens the wire at the other end, and the straightening operation begins.

[0113] S2. The fourth driving component 52 controls the support component 51 to rise to support the wire; the first adjusting component controls the pressure plate to press down the straightening sleeve 311, and the third driving component 42 drives the two smoothing rollers 41 of the smoothing mechanism 4 to rotate in opposite directions to smooth the wire, which, together with the tension of the tightening conveying mechanism 2 on the wire, completes the coarse straightening of the wire; the second adjusting component controls the straightening rod 312 to press down the wire, which, together with the two smoothing rollers 41, smooths the wire and tightens the tension of the conveying mechanism 2 on the wire, completes the fine straightening of the wire; at the same time, the upstream pre-straightening mechanism 6 completes the pre-straightening operation of the next section of the wire.

[0114] After fine straightening is completed, the screw is driven to rotate in the opposite direction by the rotating drive component, thereby loosening the fixed component 121 and the movable component 122. The tightening and conveying mechanism 2 drives multiple tightening rollers 23 to rotate through the first drive component 24, so as to convey the finely straightened wire downstream in a step-by-step manner through friction. The latter section of wire enters the fine straightening operation. The straightening mechanism 3 and the support mechanism 5 are positioned in advance to the straightening position under the coordinated control of the control system, and the straightening operation is started according to the timing of the straightening operation.

[0115] When the wire enters the wire non-destructive straightening device for the first time, it can be pre-straightened and fine-straightened sequentially by manual threading or by mechanical arm traction.

[0116] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the invention is intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention. Clearly, those skilled in the art can make various alterations and modifications to the invention without departing from its spirit and scope. Thus, if these modifications and modifications of the invention fall within the scope of the invention's technical solutions and their equivalents, the invention also intends to include these modifications and modifications.

Claims

1. A non-destructive wire straightening device, characterized in that, It includes a fixing mechanism (1), a tightening and conveying mechanism (2), and a straightening mechanism (3), wherein: The fixing mechanism (1) includes a straightening frame (11) and a fixing component disposed on one side of the straightening frame (11) and fixing one end of the wire; The tightening conveying mechanism (2) is located on the other side of the straightening frame (11) and includes a plurality of tightening rollers (23) arranged along the circumference of the wire and a first drive member (24) that drives the plurality of tightening rollers (23) to rotate and / or stop. The plurality of tightening rollers (23) together press against the circumference of the wire and apply force to the wire in the direction away from the fixing component so that the wire is tightened. The straightening mechanism (3) includes a straightening member (31) that is movably mounted on the straightening frame (11) and presses against the wire, and an adjustment component (32) that drives the straightening member (31) to move. The straightening member (31) is provided with a smoothing mechanism (4). The smoothing mechanism (4) includes two smoothing rollers (41) and a third drive (42) that drives the two smoothing rollers (41) to rotate in opposite directions. The two smoothing rollers (41) apply force to the wire when pressing against it, so that the wire is smoothed.

2. The wire straightening device according to claim 1, characterized in that, The tightening and conveying mechanism (2) further includes: A tensioning frame (21) is provided, with a plurality of tensioning rollers (23) movably connected to the tensioning frame (21) so that the plurality of tensioning rollers (23) can move toward and / or away from the center of the wire; The second drive member (22) is connected to the tensioning frame (21) and the plurality of tensioning rollers (23) to drive the plurality of tensioning rollers (23) to move.

3. The wire straightening device according to claim 1, characterized in that, The fixing components include a fixing member (121), a movable member (122), and a locking member (123) that are fitted together on one side of the straightening frame (11). The locking member (123) connects the fixing member (121) and the movable member (122) and adjusts the gap between them to clamp / release the wire.

4. The wire straightening device according to any one of claims 1-3, characterized in that, It also includes a pre-correction mechanism (6) located upstream of the fixed mechanism (1). The pre-correction mechanism (6) includes a pre-correction frame (61), and multiple pre-correction rods (62) and a pre-correction adjustment assembly (63) located on the pre-correction frame (61). The pre-straightening rod (62) includes an upper pre-straightening rod that is slidably connected to the upper plate of the pre-straightening frame (61) and a lower pre-straightening rod that is slidably connected to the lower plate of the pre-straightening frame (61). The upper and lower pre-straightening rods are spaced apart along the wire travel direction. The pre-correction adjustment assembly (63) moves each pre-correction rod (62) in a controlled manner, so that the upper pre-correction rod presses against the wire from top to bottom, and the lower pre-correction rod presses against the wire from bottom to top.

5. The wire straightening device according to any one of claims 1-3, characterized in that, The adjustment component (32) includes: A movable base is set on the straightening frame (11) and can drive the straightening component (31) to move along the wire travel direction; A lifting shaft is movably mounted on the movable base, and the movable base is provided with a first adjusting component that is connected to the lifting shaft and controls the lifting shaft's movement. The pressure plate is set on the lifting shaft and moves with the lifting shaft, pressing down on the straightening member (31).

6. The wire straightening device according to claim 5, characterized in that, It also includes a support mechanism (5) corresponding to the straightening member (31), the support mechanism (5) comprising: The support (51) is movably mounted on the straightening frame (11); The fourth drive member (52) is used to drive the support member (51) to rise and / or fall, and to support the wire when the straightening member (31) presses against the wire; The fifth drive member is used to drive the support member (51) and the fourth drive member (52) to move along the wire travel direction.

7. The wire straightening device according to claim 5, characterized in that, The straightening member (31) includes: A straightening sleeve (311) is movably mounted on a straightening frame (11), and the smoothing mechanism (4) is located at the bottom of the straightening sleeve (311); A straightening rod (312) is movably disposed within the straightening sleeve (311), and the head of the straightening rod (312) is located between the two smoothing rollers (41). The adjusting assembly (32) further includes a second adjusting member disposed on the pressure plate. The second adjusting member abuts against the top of the straightening rod (312) to control the straightening rod (312) to press against the bent part of the wire.

8. A method for non-destructive straightening of wire using the wire non-destructive straightening device according to any one of claims 1-7, characterized in that, Includes the following steps: S1. The wire is fed sequentially along the fixing mechanism (1), the straightening mechanism (3) and the tightening conveying mechanism (2). One end of the wire is fixed using the fixing component of the fixing mechanism (1), and the wire is tightened from the other end using the tightening conveying mechanism (2). S2. Use the adjustment component (32) to control the straightening component (31) to move up and down so that the straightening component (31) presses against the bent part of the wire, and the tightening roller (23) of the tightening conveying mechanism (2) cooperates with the straightening component (31) to tighten the wire in real time, so that the wire is straightened.

9. The straightening method according to claim 8, characterized in that, Before step S1, the wire is pre-straightened using the pre-straightening mechanism (6) upstream of the fixing mechanism (1), including the following steps: Step 1: The wire stepping input pre-correction mechanism (6) is placed in the pre-correction frame (61), and is supported and positioned along the wire travel direction by a number of upper pre-correction rods slidably connected to the upper frame plate of the pre-correction frame (61) and a number of lower pre-correction rods slidably connected to the lower frame plate of the pre-correction frame (61). Step 2: Using the pre-straightening adjustment component (63), at least part of the pre-straightening rod (62) is moved in a controlled manner, so that the upper pre-straightening rod presses against the wire from top to bottom and the lower pre-straightening rod presses against the wire from bottom to top, so that at least part of the wire deviates from the wire's direction of travel, thereby pre-straightening the wire and releasing internal stress. Step 3: Return the moving pre-correction rod (62) to its original position, and use the tightening conveyor (2) to apply force to the wire in the direction away from the fixed assembly so that the wire is conveyed downstream step by step into the fixed mechanism (1).

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