Low-damage silk conveying device

Abstract

The invention relates to the technical field of metal wire conveying devices, and discloses a low-damage wire conveying device which comprises a guide wheel, a detection assembly and a straightening roller set, two rows of rollers which are staggered up and down are arranged in the straightening roller set and include lower straightening rollers and upper straightening rollers, and the distance between the rollers in the same row in the straightening roller set can be adjusted. A metal wire unfolded by the spool is fed into the straightening roller set after being adjusted in direction by the guide wheel, an elastic layer is arranged on the side, making contact with the metal wire, of the guide wheel, a deformation layer is arranged below the elastic layer, the hardness of the elastic layer is larger than that of the deformation layer, a bag body hole is formed in the deformation layer, and the light transmittance of a bag body is different from that of an area without the bag body. Detection notches are formed in the positions, at the deformation layers, of the two sides of the guide wheels, the detection assembly can detect the change of the light transmittance of the deformation layers through the detection notches, and the detection assembly adjusts the roller wheel distance in the correction roller set through the change of the light transmittance of the deformation layers and detection of the shape of the metal wire.

Description

Technical Field

[0001] The present invention relates to the technical field of metal wire transportation devices, and particularly to a wire material transportation device with low damage. Background Art

[0002] In the production process of solder tapes for solar panels, the starting-end correction structure of metal wires is a key device to ensure that the wires are straight, non-twisted, and accurately enter the subsequent processing steps. When the metal wires are released from the wire spool, they may be bent, twisted, or locally deformed. The correction structure restores them to straightness through mechanical adjustment. By the guide wheels and the correction structure, the straightness is restored to ensure that the wires enter the subsequent equipment with a constant tension and at the correct angle. The metal wires are released from the wire spool, initially guided by the guide wheels, and alternately pressed by the horizontal / vertical roller groups to eliminate bending and twisting. The straightened wires after correction enter the next process (such as calendering and tin plating).

[0003] Since the metal wires just released from the wire spool have a large internal bending stress, and the bending conditions of the wires are different each time. At this time, during the guiding, transporting, and correcting processes, damage is extremely likely to occur. It is necessary to adjust the pressure applied by the correction rollers according to different wire conditions to ensure efficient correction and avoid damage. At the same time, rough hard particles are likely to remain on the surfaces of the guide wheels and correction rollers, causing damage to the wires during transportation. It is necessary to design a cleaning structure to clean them in time. Summary of the Invention

[0004] (I) Technical problems to be solved: Aiming at the deficiencies of the prior art, the present invention provides a wire material transportation device with low damage, which has the advantage of low damage to the wire material during transportation, and solves the problem of damage to the metal wires during transportation.

[0005] (II) Technical solutions: To achieve the purpose of low damage to the wire material during transportation, the present invention provides the following technical solutions: A wire material transportation device with low damage, including guide wheels, a detection component, and a correction roller group. In the correction roller group, there are two rows of rollers staggered up and down, namely lower correction rollers and upper correction rollers. The distance between the rollers in the same row in the correction roller group can be adjusted. After the guide wheels adjust the direction of the metal wires unrolled from the wire spool, they are sent into the correction roller group. An elastic layer is provided on the side of the guide wheels in contact with the metal wires. A deformation layer is provided below the elastic layer, and the hardness of the elastic layer is greater than that of the deformation layer. There are capsule holes in the deformation layer, and the light transmittance of the capsules is different from that of the area without capsules. Detection slots are provided on both sides of the guide wheels and at the location of the deformation layer. The detection component can detect the change in the light transmittance of the deformation layer through the detection slots. The detection component adjusts the distance between the rollers in the correction roller group based on the change in the light transmittance of the deformation layer and the detection of the shape of the metal wires.

[0006] The detection component is provided with a light source and a sensor. The detection component irradiates the light source onto the guide wheel, and the sensor receives the reflected light from the metal wire and the deformation layer in the detection notch on the guide wheel.

[0007] A transparent acrylic plate is provided on the detection notch.

[0008] V-shaped grooves are provided on the sides of the lower correction roller and the upper correction roller in contact with the metal wire. A diversion groove is provided at the bottom of the V-shaped groove, and dust discharge ports are provided on both sides of the bottom of the V-shaped groove. The diversion groove connects the dust discharge ports at different horizontal positions and is arrayed along the edges of the lower correction roller and the upper correction roller.

[0009] The dust discharge port is a through hole, with the side close to the diversion groove as the inlet and the side far from the diversion groove as the outlet. The width of the inlet is smaller than that of the outlet, and the overall area of the inlet is 1 / 3 of that of the outlet.

[0010] The cross-section of the diversion groove is in the shape of an involute arc similar to that of an airfoil, and the edge of the groove is a smooth arc.

[0011] A dust collection box is provided below the correction roller group, and the dust collection box is fixed below the correction roller group by a magnetic attraction structure.

[0012] The top edge of the dust collection box is outwardly expanding, and the expansion angle is 15°.

[0013] The capsule in the deformation layer is the first capsule, and the cross-section of the first capsule is in a flat rectangular shape and is provided with at least 3 rows in an array. The first capsule is only filled with a colorless gas, so that the light transmittance of the area where the capsule is arranged is greater than that of the area where the capsule is not arranged.

[0014] The capsule in the deformation layer is the second capsule, and the cross-section of the second capsule is in a vertical rectangular shape. The height of the second capsule is the same as the height of the detection notch. The second capsule is filled with a colored liquid, so that the light transmittance of the area where the capsule is arranged is less than that of the area where the capsule is not arranged.

[0015] (III) Beneficial effects: Compared with the prior art, the present invention provides a low-damage wire transport device with the following beneficial effects: 1. The low-damage wire transport device conforms to the mechanical principle of "surface wear resistance and bottom layer energy absorption" through the hardness gradient design of the elastic layer and the deformation layer. The high hardness of the elastic layer limits the microscopic deformation of the surface and avoids scratches on the metal wire due to local friction. The deformation layer converts the impact energy transmitted by the wire into viscoelastic deformation energy dissipation through the high strain capacity of the low-hardness material, thereby reducing the instantaneous impact of dynamic tension fluctuations on the wire. The layered structure disperses the contact stress and reduces the cyclic fatigue damage of the guide wheel material. The elastic layer acts as the first barrier to withstand the main wear and tear and can be replaced independently to extend the life of the entire component. The detection component reverses the contact pressure distribution in real time through the change in the transmittance of the deformation layer, and dynamically adjusts the spacing of the correction roller group in combination with the optical recognition of the metal wire morphology. This mechanism ensures that the axial stress of the wire is uniform during the straightening process, avoiding grain boundary slip or dislocation accumulation caused by local stress concentration. The progressive straightening design of the upper and lower staggered roller groups, through multi-stage small deformation The amount of reverse bending is adjusted to make the release of residual stress inside the metal wire follow the minimum energy path, significantly reducing the tendency of material work hardening. The high resilience of the elastic layer can compensate for the tiny unevenness on the surface of the metal wire and avoid the ploughing effect caused by direct contact of the hard roller. The dynamic adjustment function of the spacing of the correction roller group can automatically limit the single straightening deformation according to the yield strength of the wire material, ensuring that the strain of each bending is always lower than the fatigue limit of the material, fundamentally avoiding the risk of fatigue crack propagation caused by repeated plastic deformation. The porous structure of the deformation layer forms a directional heat dissipation channel, which quickly guides the friction heat of the contact interface to the inside of the wheel body, avoiding recrystallization softening or phase embrittlement caused by heat accumulation on the surface of the wire. While correcting the longitudinal bending, the upper and lower staggered roller group actively offsets the lateral torsional load of the metal wire through the axial fine-tuning function of the roller, eliminating the risk of compound fracture caused by the superposition of torsional load and bending load in the traditional straightening process. The end of the correction roller group adopts a tapered roller spacing design, so that the residual stress of the wire when it leaves the straightening area is exponentially attenuated, avoiding the end necking or warping deformation caused by stress mutation.

[0016] 2. The low-damage wire material transportation device forms a statically determinate spatial constraint through the geometric configuration of the V-shaped groove, enabling the metal wire to always be on the symmetry axis of the groove body during the straightening process. This design converts the lateral offset tendency of the wire into an axial normal pressure through the vector synthesis of the contact forces on both inclined surfaces, avoiding the asymmetric stress concentration caused by unilateral friction in traditional flat rollers, reducing the risk of lattice distortion on the wire surface. The wedge-shaped contact surface of the V-shaped groove expands the contact area between the wire and the roller. According to Hertz contact theory, the increase in the contact area can significantly reduce the peak value of the local contact stress, effectively suppressing the initiation of microcracks on the wire surface. At the same time, the presence of the diversion groove at the bottom of the groove avoids the direct contact between the bottom of the groove body and the wire, further reducing the accumulation of frictional heat. The gradually expanding structure with a narrow inlet and a wide outlet at the dust exhaust port, combined with the involute arc cross-section of the diversion groove, forms a directional accelerating airflow field. When the straightening roller rotates, the diversion groove guides the airflow to flow along the groove body, forming a high-speed and low-pressure area at the inlet of the dust exhaust port. The expansion of the low-pressure area at the outlet enables the debris to be efficiently discharged with the airflow. This design breaks through the passive mode of traditional blowing dust removal, realizes self-driven cleaning, and avoids abrasive wear caused by secondary adhesion of metal chips. The involute arc cross-section of the diversion groove and the smooth groove edge enable the airflow to flow following the wall attachment effect, reducing the turbulent vortices generated by boundary layer separation. The laminar airflow not only reduces energy loss but also improves the debris transportation efficiency by stabilizing the airflow path, avoiding the re-rolling of debris caused by turbulence. The diversion groove sets the dust exhaust port on both sides of the bottom of the V-shaped groove, enabling the metal chips to directly enter the dust exhaust system through the diversion groove, avoiding the accumulation of debris on the surface of the straightening roller to form a third-body abrasive. This design physically isolates the cleaning path from the wire contact area, eliminating the possibility of debris participating in friction at the source.

[0017] 3. The low-damage wire material transportation device has a light transmittance of the bladder higher than that of the substrate, and the multi-row design forms a light transmittance gradient field. When the metal wire is pressed into the deformation layer, the difference in the compression degree of the bladders in different rows generates a dynamic light intensity distribution. The detection component can construct a two-dimensional distribution model of the wire contact pressure by capturing the spatial variation of the light intensity gradient. Compared with the single-row bladder detection, it improves the recognition accuracy of the wire lateral bending mode. This mechanism is particularly suitable for detecting sudden changes in the edge contact pressure of the wire, avoiding microdamage caused by uneven pressure distribution. The high compressibility of the gas enables the bladder deformation to have low hysteresis characteristics, which can respond to the wire tension fluctuation in real time. Combined with the high-speed sampling of the detection component, it can capture pressure changes in milliseconds, realize the instantaneous recognition of dynamic impact loads, and link the straightening roller group for pre-compensation adjustment to prevent plastic deformation of the wire caused by stress overload.

[0018] 4. The low-damage wire material transportation device has a non-linear correlation between the liquid color depth and pressure, enabling the light transmittance change to have an exponential response characteristic. This characteristic has high sensitivity in the low-pressure range and automatic amplitude limiting in the high-pressure range, perfectly matching the pressure monitoring requirements during the straightening process of metal wires, achieving wide dynamic range detection. The absorption characteristic of the colored liquid for light of a specific wavelength allows the detection component to adopt narrowband filtering technology, effectively suppressing the interference of ambient stray light. For example, by selecting a detection wavelength outside the liquid absorption peak or using the reflection spectrum shift caused by the liquid color change to construct a differential detection mode, the signal-to-noise ratio is increased by one order of magnitude. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the present invention.

[0020] Figure 2 It is a side view of the structure of the present invention.

[0021] Figure 3 It is a schematic diagram of the expansion of the integrated box of the structure of the present invention.

[0022] Figure 4 It is a schematic diagram of the first bladder in the deformation layer of the first embodiment of the present invention.

[0023] Figure 5 It is a schematic diagram of the second bladder in the deformation layer of the second embodiment of the present invention.

[0024] Figure 6 It is a schematic diagram of the structure of the straightening roller of the present invention Figure 1 .

[0025] Figure 7 It is a schematic diagram of the structure of the straightening roller of the present invention Figure 2 .

[0026] In the figure: 1. Guide wheel; 2. Detection component; 3. Straightening roller group; 4. Dust collection box; 11. Detection notch; 12. Elastic layer; 31. Lower straightening roller; 32. Upper straightening roller; 121. Deformation layer; 301. V-shaped groove; 302. Dust discharge port; 303. Diversion groove; 1211. First bladder; 1212. Second bladder. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] Embodiment 1: Please refer to Figures 1 - 4, a low-damage wire material transportation device, including a guide wheel 1, a detection component 2, and a correction roller set 3. In the correction roller set 3, there are two rows of rollers staggered up and down, namely a lower correction roller 31 and an upper correction roller 32. The diameter of the roller farther from the guide wheel 1 is smaller than that of the roller closer to the guide wheel 1, so that the correction pressure provided by the rollers gradually decreases, avoiding damage to the wire during subsequent correction. The distance between the rollers in the same row in the correction roller set 3 can be adjusted. After the guide wheel 1 adjusts the direction of the metal wire unrolled from the wire spool, it is sent into the correction roller set 3. An elastic layer 12 is provided on the side of the guide wheel 1 in contact with the metal wire. A deformation layer 121 is provided below the elastic layer 12, and the hardness of the elastic layer 12 is greater than that of the deformation layer 121. A capsule body is provided in the deformation layer 121, and the light transmittance of the capsule body is different from that of the area without the capsule body. Detection notches 11 are provided on both sides of the guide wheel 1 and at the position where the deformation layer 121 is provided. The detection component 2 can detect the change in the light transmittance of the deformation layer 121 through the detection notches 11. The detection component 2 adjusts the distance between the rollers in the correction roller set 3 through the change in the light transmittance of the deformation layer 121 and the detection of the shape of the metal wire. A light source and a sensor are provided in the detection component 2. The detection component 2 irradiates the light source onto the guide wheel 1 and receives the reflected light of the metal wire on the guide wheel 1 and the deformation layer 121 in the detection notches 11 through the sensor.

[0029] The metal wire is unwound from the spool. The spool controls the wire release speed through a magnetic powder brake or a servo motor to avoid loose wire caused by excessive speed or excessive tension caused by too slow speed. The metal wire is transported into the straightening roller group 3 after adjusting the direction through the guide wheel 1. The guide wheel 1 is provided with a detection notch 11 and an elastic layer 12. The elastic layer 12 is made of polyurethane. When the metal wire passes through the guide wheel 1, the deformation of the elastic layer 12 reduces the damage to the metal wire. And a deformation layer 121 is provided below the elastic layer 12. The hardness of the elastic layer 12 is greater than that of the deformation layer 121, which avoids excessive deformation of the surface layer. At the same time, when the bottom layer can synchronize the deformation of the surface layer, it can effectively absorb impacts and reduce the influence of vibration. On both sides of the guide wheel 1 and at the position of the deformation layer 121, there are detection notches 11. There is a bladder in the deformation layer 121, and the light transmittance of the bladder is different from that of the area without the bladder. The detection component 2 can detect the reflection of the deformation layer 121 through the detection notch 11. When the metal wire is deformed, the greater the degree of deformation, the greater the extrusion force applied to the elastic layer 12 when passing through the guide wheel 1, so that the deformation degrees of the elastic layer 12 and the deformation layer 121 are greater, and the compression degree of the bladder is greater, which changes the number of light rays emitted by the detection component 2 passing through the deformation layer 121 and the detection notch 11, and judges the deformation condition of the deformation layer 121 and the bending state of the metal wire through the reflection condition of the metal wire at the tangent point above the guide wheel 1. The reflection condition of the metal wire can reflect the shape of the wire in the top view (by emitting light from above the guide wheel 1 by the detection component 2, the reflection intensity of the metal wire is greater than the reflection intensity of the elastic layer 12), and then adjust the adjacent straightening rollers in the straightening roller group 3. When the area of the upper reflected light remains unchanged but there are points with uneven intensity, and the transmitted light through the detection notch 11 changes, it indicates that the metal wire has a longitudinal bend. The point where the reflected light increases is the upward bending side, and the point where the reflected light weakens is the downward bending side. It is necessary to perform unilateral pressure compensation on the bending side. The calculation formula for the bending amount is δ = 0.1 mm×(ΔI / 10%), where ΔI is the intensity difference of the reflected light of the metal wire. The bending side (the side with strong reflected light) needs to increase the pressure and reduce the distance between the rollers in the same row on the bending side. The reverse side (the side with weak reflected light) needs to reduce the pressure and increase the distance between the rollers in the same row on the reverse side. Δ L = β ⋅Δ I (β = 0.1 mm / %), through increasing the unilateral pressure, the wire is forced to be corrected in the reverse direction to the reverse side. When the upper reflected light detects that the metal wire has a transverse twist (for example, when twisted clockwise, the light reflectance on the left side along the transportation direction is low, and the light reflectance on the right side is high), by increasing the pressure on the upper left side (reducing the distance) and increasing the pressure on the lower right side (reducing the distance) in the straightening roller group 3, a pressure difference correction is formed (the counterclockwise twist is opposite to the clockwise twist). The adjustment amount formula is Δ L = γ ⋅Δ T(γ = 0.2 mm / %), where ΔT is the difference in light transmittance between the left and right side reflection photosynthetic detection notches 11 of the metal wire. When the metal wire is released from the spool, it may have longitudinal bending or lateral twisting due to winding storage. Straightening in a single direction cannot cover all deformation modes. Therefore, in the straightening roller group 3, there are lower straightening rollers 31 and upper straightening rollers 32 arranged in a staggered up and down manner. By alternately bending the wire in opposite directions by the upper and lower rollers, the internal residual stress is gradually neutralized. At the same time, the straightening amplitude of each group of rollers gradually decreases to avoid material yield or fracture caused by large deformation in a single time. The single-roller pressure is inversely proportional to the roller spacing and directly proportional to the roller diameter. During the working process, the diameter adjustment is difficult and costly. Only the roller spacing in the straightening roller group 3 is convenient to adjust because the straightening roller group 3 rotates passively. For example, the rollers in the straightening roller group 3 can be arranged on the lead screw and the lead screw is rotated by a motor to realize the movement of a single roller in the extending direction of the lead screw, so that the spacing changes. The state of the metal wire is detected by the detection component 2, and the roller spacing is finely adjusted to ensure that the pressure exerted by the straightening roller group 3 on the wire is the most appropriate, avoiding the occurrence of metal wire breakage or incomplete elimination of bending stress situations.

[0030] A transparent acrylic board is provided on the detection notch 11.

[0031] Refer to Figures 6 - 7 , on the side of the lower straightening roller 31 and the upper straightening roller 32 in contact with the metal wire, there is a V-shaped groove 301. The V-shaped groove 301 can effectively limit the wire and avoid deviation during the straightening process. A diversion groove 303 is provided at the bottom of the V-shaped groove 301, and dust discharge ports 302 are provided on both sides at the bottom of the V-shaped groove 301. The diversion groove 303 connects the dust discharge ports 302 with different horizontal positions and is arrayed along the edges of the lower straightening roller 31 and the upper straightening roller 32. The dust discharge ports 302 are through holes, and the side close to the diversion groove 303 is the inlet, and the side far from the diversion groove 303 is the outlet. The width of the inlet is smaller than that of the outlet, and the overall area of the inlet is 1 / 3 of that of the outlet. When the straightening roller rotates, the airflow is guided by the diversion groove 303 to flow towards the inlet of the dust discharge port 302. The small width of the inlet and the large width of the outlet can effectively form the Venturi effect, so that the dust and metal chips are accelerated to be discharged from the dust discharge port 302, avoiding being left on the surface of the straightening roller and causing damage to the metal wire due to friction. The groove type of the diversion groove 303 adopts an involute arc section similar to an airfoil, and the groove edge is a smooth arc to avoid sharp corners from scratching the wire. The arc-shaped groove naturally guides the airflow and reduces turbulence.

[0032] Refer to Figures 2 - 3 , a dust collection box 4 is provided below the straightening roller group 3. The dust collection box 4 is fixed below the straightening roller group 3 by a magnetic attraction structure. The top edge of the dust collection box 4 is outwardly expanding, and the expansion angle is 15°.

[0033] Refer to Figure 4, at least 3 rows of capsules are provided in the deformation layer 121, and only colorless gas is filled in the capsules, so that the light transmittance of the area where the capsules are arranged is greater than that of the area where the capsules are not arranged. And because there are multiple rows of capsules, when the metal wire passes through, the capsules are compressed, resulting in a significant reduction in the light-transmitting area.

[0034] Embodiment 2: Please refer to Figures 1 - 3 and Figure 5 , a low-damage wire material transportation device, including a guide wheel 1, a detection component 2 and a correction roller group 3. There are two rows of rollers arranged staggered up and down in the correction roller group 3, namely a lower correction roller 31 and an upper correction roller 32. And the diameter of the roller far from the guide wheel 1 is smaller than that of the roller close to the guide wheel 1, so that the correction pressure provided by the rollers gradually decreases, avoiding damage to the wire during subsequent correction. The distance between the rollers in the same row in the correction roller group 3 can be adjusted. After the guide wheel 1 adjusts the direction of the metal wire unrolled from the wire spool, it is sent into the correction roller group 3. An elastic layer 12 is provided on the side of the guide wheel 1 in contact with the metal wire. A deformation layer 121 is provided below the elastic layer 12, and the hardness of the elastic layer 12 is greater than that of the deformation layer 121. Capsules are provided in the deformation layer 121, and the light transmittance of the capsules is different from that of the area where the capsules are not provided. Detection notches 11 are provided on both sides of the guide wheel 1 and at the position where the deformation layer 121 is provided. The detection component 2 can detect the change in the light transmittance of the deformation layer 121 through the detection notches 11. The detection component 2 adjusts the distance between the rollers in the correction roller group 3 through the change in the light transmittance of the deformation layer 121 and the detection of the shape of the metal wire. A light source and a sensor are provided in the detection component 2. The detection component 2 irradiates the light source onto the guide wheel 1 and receives the reflected light of the metal wire on the guide wheel 1 and the deformation layer 121 in the detection notches 11 through the sensor.

[0035] The metal wire is unwound from the spool. The spool controls the wire release speed through a magnetic powder brake or a servo motor to avoid loose wire caused by excessive speed or excessive tension caused by too slow speed. The metal wire is transported into the straightening roller group 3 after adjusting the direction through the guide wheel 1. The guide wheel 1 is provided with a detection notch 11 and an elastic layer 12. The elastic layer 12 is made of polyurethane. When the metal wire passes through the guide wheel 1, the deformation of the elastic layer 12 reduces the damage to the metal wire. And a deformation layer 121 is provided below the elastic layer 12. The hardness of the elastic layer 12 is greater than that of the deformation layer 121, which avoids excessive deformation of the surface layer. At the same time, when the bottom layer can synchronize the deformation of the surface layer, it can effectively absorb the impact and reduce the vibration influence. On both sides of the guide wheel 1 and at the position of the deformation layer 121, there are detection notches 11. A capsule is provided in the deformation layer 121, and the light transmittance of the capsule is different from that of the area without the capsule. The detection component 2 can detect the reflection of the deformation layer 121 through the detection notch 11. When the metal wire is deformed, the greater the degree of deformation, the greater the extrusion force applied to the elastic layer 12 when passing through the guide wheel 1, making the deformation degrees of the elastic layer 12 and the deformation layer 121 greater, and the greater the compression degree of the capsule, which changes the number of light rays emitted by the detection component 2 passing through the deformation layer 121 and the detection notch 11, and judges the deformation situation of the deformation layer 121 and the bending state of the metal wire through the reflection of the metal wire at the tangent point above the guide wheel 1. The reflection of the metal wire can reflect the shape of the wire in the top view (by the detection component 2 emitting light downward from above the guide wheel 1, the reflection intensity of the metal wire is greater than that of the elastic layer 12), and then adjust the adjacent straightening rollers in the straightening roller group 3. When the area of the upper reflected light remains unchanged but there are points with uneven intensity, and the transmitted light through the detection notch 11 changes, it indicates that the metal wire has a longitudinal bend. The point where the reflected light is enhanced is the upward bending side, and the point where the reflected light is weakened is the downward bending side. It is necessary to perform unilateral pressure compensation on the bending side. The calculation formula for the bending amount is δ = 0.1 mm×(ΔI / 10%), where ΔI is the intensity difference of the reflected light of the metal wire. The bending side (the side with strong reflected light) needs to increase the pressure and reduce the distance between the same-row rollers on the bending side. The reverse side (the side with weak reflected light) needs to reduce the pressure and increase the distance between the same-row rollers on the reverse side, Δ L = β ⋅Δ I (β = 0.1 mm / %). Through increasing the unilateral pressure, the wire is forced to be corrected in the reverse direction to the reverse side. When the upper reflected light detects that the metal wire has a transverse twist (for example, when twisted clockwise, the light reflectance on the left side along the transportation direction is low and the light reflectance on the right side is high), by increasing the pressure on the left side of the upper row (reducing the distance) and increasing the pressure on the right side of the lower row (reducing the distance) in the straightening roller group 3, a pressure difference correction is formed (the counterclockwise twist is opposite to the clockwise twist). The adjustment amount formula is Δ L = γ ⋅Δ T(γ = 0.2 mm / %), where ΔT is the difference in light transmittance between the left and right side reflection photosynthetic detection notches 11 of the metal wire. When the metal wire is released from the wire spool, it may have longitudinal bending or lateral twisting due to winding storage. Straightening in a single direction cannot cover all deformation modes. Therefore, in the straightening roller group 3, there are lower straightening rollers 31 and upper straightening rollers 32 arranged alternately up and down. By alternately bending the wire in opposite directions by the upper and lower rollers, the internal residual stress is gradually neutralized. At the same time, the straightening amplitude of each group of rollers gradually decreases to avoid material yield or fracture caused by a single large deformation. The single-roller pressure is inversely proportional to the roller spacing and directly proportional to the roller diameter. During the working process, the diameter adjustment is difficult and costly. Only the roller spacing in the straightening roller group 3 is convenient to adjust because the straightening roller group 3 rotates passively. For example, the rollers in the straightening roller group 3 can be arranged on a lead screw and the lead screw is rotated by a motor to move a single roller in the extending direction of the lead screw, changing the spacing. By detecting the state of the metal wire with the detection component 2, the roller spacing is finely adjusted to ensure that the pressure exerted by the straightening roller group 3 on the wire is the most appropriate, avoiding the occurrence of metal wire breakage or incomplete elimination of bending stress.

[0036] A transparent acrylic board is provided on the detection notch 11.

[0037] Refer to Figures 6 - 7 , on the contact side of the lower straightening roller 31 and the upper straightening roller 32 with the metal wire, there is a V-shaped groove 301. The V-shaped groove 301 can effectively limit the wire and prevent deviation during the straightening process. A diversion groove 303 is provided at the bottom of the V-shaped groove 301, and dust discharge ports 302 are provided on both sides of the bottom of the V-shaped groove 301. The diversion groove 303 connects the dust discharge ports 302 at different horizontal positions and is arrayed along the edges of the lower straightening roller 31 and the upper straightening roller 32. The dust discharge ports 302 are through holes, with the side close to the diversion groove 303 as the inlet and the side far from the diversion groove 303 as the outlet. The width of the inlet is smaller than that of the outlet, and the overall area of the inlet is 1 / 3 of that of the outlet. When the straightening roller rotates, the airflow is guided by the diversion groove 303 to flow towards the inlet of the dust discharge port 302. The small width of the inlet and the large width of the outlet can effectively form a Venturi effect, accelerating the discharge of dust and metal chips from the dust discharge port 302 and preventing damage to the metal wire due to residue on the surface of the straightening roller. The cross-section of the diversion groove 303 is in the shape of an involute arc similar to an airfoil, and the edge of the groove is a smooth arc to avoid scratching the wire with sharp corners. The arc-shaped groove naturally guides the airflow and reduces turbulence.

[0038] Refer to Figures 2 - 3 , a dust collection box 4 is provided below the straightening roller group 3. The dust collection box 4 is fixed below the straightening roller group 3 by a magnetic attraction structure. The top edge of the dust collection box 4 is outwardly expanding, and the expansion angle is 15°.

[0039] Refer to Figure 5, in the deformation layer 121, the bladder is the second bladder 1212, and the cross-section of the second bladder 1212 is vertically rectangular. The height of the second bladder 1212 is the same as the height of the detection notch 11. The second bladder 1212 is filled with a colored liquid, so that the light transmittance of the area where the bladder is arranged is less than that of the area where the bladder is not arranged. When the metal wire passes through, the bladder is compressed, the color of the liquid becomes darker, the light transmittance decreases, and the reflected light decreases.

[0040] Working principle: The metal wire is unrolled from the wire spool. The spool controls the wire release speed through a magnetic powder brake or a servo motor to avoid loose wire caused by excessive speed or excessive tension caused by too slow speed. The metal wire is transported into the straightening roller group 3 after being directed by the guide wheel 1. The guide wheel 1 is provided with a detection notch 11 and an elastic layer 12. The elastic layer 12 is made of polyurethane, so that when the metal wire passes through the guide wheel 1, the deformation of the elastic layer 12 reduces the damage to the metal wire. And a deformation layer 121 is arranged below the elastic layer 12. The hardness of the elastic layer 12 is greater than that of the deformation layer 121, which avoids excessive deformation of the surface layer. At the same time, when the bottom layer can synchronize the deformation of the surface layer, it can effectively absorb impacts and reduce the influence of vibration. On both sides of the guide wheel 1 and at the position of the deformation layer 121, there are detection notches 11. The deformation layer 121 is provided with a bladder, and the light transmittance of the bladder is different from that of the area where the bladder is not arranged. The detection component 2 can detect the reflection of the deformation layer 121 through the detection notch 11 and the reflection of the metal wire at the tangent point above the guide wheel 1 to judge the deformation of the deformation layer 121 and the bending state of the metal wire. The reflection of the metal wire can reflect the shape of the wire in the top view (by the detection component 2 emitting light downward from above the guide wheel 1, the reflection intensity of the metal wire is greater than that of the elastic layer 12). Then, the adjacent straightening rollers in the straightening roller group 3 are adjusted. When the metal wire is released from the wire spool, it may have longitudinal bending or lateral twisting due to winding storage. Single-direction straightening cannot cover all deformation modes. Therefore, the straightening roller group 3 is provided with lower straightening rollers 31 and upper straightening rollers 32 arranged in a staggered manner up and down. By alternately bending the wire in the opposite direction by the upper and lower rollers, the internal residual stress is gradually neutralized. At the same time, the straightening amplitude of each group of rollers gradually decreases to avoid material yield or fracture caused by a single large deformation. The single-roller pressure is inversely proportional to the roller spacing and directly proportional to the roller diameter. During the working process, it is difficult and costly to adjust the diameter. Only the roller spacing in the straightening roller group 3 is convenient to adjust. Because the straightening roller group 3 rotates passively. For example, the rollers in the straightening roller group 3 can be arranged on the lead screw and the lead screw is rotated by a motor to realize the movement of a single roller in the extending direction of the lead screw, so that the spacing changes. By detecting the state of the metal wire by the detection component 2, the roller spacing is finely adjusted to ensure that the pressure exerted by the straightening roller group 3 on the wire is the most appropriate, avoiding the occurrence of metal wire breakage or incomplete elimination of bending stress.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-damage wire material transport device, comprising a guide wheel (1), a detection component (2) and a correction roller group (3), characterized in that: The correction roller group (3) is provided with two rows of rollers staggered up and down, namely lower correction rollers (31) and upper correction rollers (32), and the diameter of the rollers far from the guide wheel (1) is smaller than the diameter of the rollers close to the guide wheel (1). The spacing between the rollers in the same row in the correction roller group (3) can be adjusted. The guide wheel (1) adjusts the direction of the metal wire unrolled from the wire shaft and then feeds it into the correction roller group (3). The guide wheel (1) is provided with an elastic layer (12) on the side in contact with the metal wire, and a deformation layer (121) is provided below the elastic layer (12). The elastic layer (12) has a harderness than the deformable layer (121), a capsule is provided in the deformable layer (121), and the light transmittance of the capsule is greater than that of a region where no capsule is provided, detection slots (11) are provided on both sides of the guide wheel (1) and at locations where the deformable layer (121) is provided, the detection component (2) is capable of detecting changes in the light transmittance of the deformable layer (121) through the detection slots (11), and the detection component (2) adjusts the roller spacing in the correction roller group (3) by detecting changes in the light transmittance of the deformable layer (121) and the shape of the metal wire.

2. A low-damage silk material transport device according to claim 1, characterized in that: The detection component (2) is provided with a light source and a sensor. The detection component (2) irradiates the light source onto the guide wheel (1), and receives reflected light from the metal wire on the guide wheel (1) and the deformed layer (121) in the detection notch (11) through the sensor.

3. A low-damage wire material transport device according to claim 2, characterized in that: A transparent acrylic plate is provided on the detection notch (11).

4. A low-damage wire material transport device according to claim 2, characterized in that: The lower straightening roller (31) and the upper straightening roller (32) are provided with a V-shaped groove (301) on the side in contact with the metal wire, the bottom of the V-shaped groove (301) is provided with a guide groove (303), and both sides of the bottom of the V-shaped groove (301) are provided with dust exhaust ports (302), the guide grooves (303) connect the dust exhaust ports (302) at different horizontal positions, and are arranged in an array along the edges of the lower straightening roller (31) and the upper straightening roller (32).

5. A low-damage wire material transport device according to claim 4, characterized in that: The dust exhaust port (302) is a through hole, and the side close to the guide groove (303) is an inlet, and the side away from the guide groove (303) is an outlet, and the width of the inlet is smaller than the width of the outlet, and the overall area of ​​the inlet is 1 / 3 of the outlet.

6. A low-damage wire material transport device according to claim 4, characterized in that: The groove shape of the guide groove (303) adopts an involute arc cross-section similar to that of an airplane wing, and the groove edge is a smooth arc.

7. A low-damage wire material transport device according to claim 4, characterized in that: A dust collecting box (4) is provided below the correction roller group (3); the dust collecting box (4) is fixed below the correction roller group (3) using a magnetic attraction structure.

8. A low-damage wire material transport device according to claim 7, characterized in that: The top edge of the dust collecting box (4) is in an outward expansion shape, and the expansion angle is 15°.

9. A low-damage wire material transport device according to any one of claims 3 to 8, characterized in that: The capsule in the deformable layer (121) is a first capsule (1211), and the cross-section of the first capsule (1211) is a flat rectangular shape, and is provided with at least 3 rows in an array, and the first capsule (1211) is only filled with colorless gas, so that the light transmittance of the capsule-provided area is greater than that of the area without the capsule.

10. A low-damage silk material transport device according to any one of claims 3 to 8, characterized in that: The capsule in the deformable layer (121) is a second capsule (1212), and the cross-section of the second capsule (1212) is in a vertical rectangular shape. The height of the second capsule (1212) is consistent with the height of the detection slot (11). The second capsule (1212) is filled with a colored liquid, so that the light transmittance of the capsule-arrangement area is lower than that of the non-capsule-arrangement area.

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