Pulse current assisted rod wire spiral straightening device and method

Abstract

The present application relates to the technical field of rod wire straightening, and discloses a pulse current auxiliary rod wire spiral straightening device and method, which comprises a straightening frame and multiple straightening rollers. The multiple straightening rollers are distributed in a spiral shape on the rod wire, so that the multiple straightening rollers can straighten the rod wire from a curved state to a straight state. A pair of conductive rollers is used to abut against the rod wire. Multiple pulse power supplies are connected to the multiple straightening rollers and the conductive rollers, respectively. The multiple straightening rollers, the multiple pulse power supplies, the conductive rollers and the rod wire can form a parallel circuit for passing pulse current into the rod wire. When the rod wire passes through the pair of conductive rollers, the upper conductive roller can be pushed to move, and the stable contact between the two conductive rollers and the rod wire is ensured through the sliding block, so as to ensure the stable power supply of the parallel circuit. The present application can assist in straightening the rod wire through power supply, and improve the straightening effect of the rod wire.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rod wire straightening technology, in particular to a pulse current assisted rod wire spiral straightening device and method. BACKGROUND

[0002] With the development of society and the progress of science and technology, new requirements are put forward for the large-scale, complex and integration of industrial equipment. The fuse additive manufacturing process is guided by a numerical model, and materials are added layer by layer to gradually build three-dimensional parts, providing unprecedented design freedom and production flexibility for processing complex components. The point-by-point rapid melting and rapid solidification characteristics of the fuse additive manufacturing technology can cleverly break through the bottleneck of the conventional large component casting forming, which is prone to cause metallurgical / solidification defects such as coarse structure, macrosegregation, shrinkage porosity, etc. However, the traditional rod wire preparation technology is affected by factors such as processing technology and uneven material properties, and the straightness of the wire is often out of standard and residual stress concentration is common.

[0003] Pulse current assisted processing technology is a technology that applies high-frequency pulse current to both ends of the rod wire. By using the electroplastic effect of pulse current, the pulse current can reduce the rolling force, drawing force or forging force required during material processing, so that the elongation and deformation ability of the material at low temperature and high strain rate are significantly improved. The uniformity of plastic deformation and dynamic recrystallization in the plastic processing of the metal is improved, the generation of plastic instability and cracks is delayed, and the surface quality of the finished product is improved, and the residual stress of the finished product is removed.

[0004] Currently, the following problems still exist in the straightening process of rod wires:

[0005] 1. Rod wires are usually stored and transported using spools. During the winding process, the inside and outside of the rod wire are subjected to different tensile and compressive stresses, so the rod wire will bend. Some rod wires have insufficient springback after unloading due to their low yield strength, and there is still some bending phenomenon, which affects the later use.

[0006] 2. The straightening rollers of the traditional rod wire straightening process are usually arranged horizontally and vertically, which leads to uneven distribution of straightening points during the straightening process, and the straightness of the finished rod wire is poor.

[0007] 3. The stress concentration caused by the non-continuous defects such as inclusions, pores and cracks in the metal material, as well as the residual stress caused by the strong tensile, cold working and heat treatment of the metal material, will affect the normal use of the rod wire.

[0008] 4. The traditional power supply method applies current to the rod wire through a single conductive roller. However, since the conductive roller and the rod wire are in line contact, the contact area is small, and therefore the current density is small, which cannot apply high-density current to the rod wire.

[0009] 5. Due to the influence of the skin effect of the pulse current, the current is unevenly distributed on the rod and wire during the application of current, resulting in uneven distribution of the rod and wire structure and temperature field.

[0010] Therefore, there is an urgent need for a pulse current assisted rod and wire spiral straightening device and method to solve the above problems. Summary of the Invention

[0011] The purpose of the present invention is to provide a device and method for spiral straightening of rods and wires assisted by a pulse current, so as to solve the problems existing in the above-mentioned prior art.

[0012] To achieve the above-mentioned object, the present invention provides the following solution: The present invention provides a pulse current assisted rod and wire spiral straightening device, comprising:

[0013] frame;

[0014] A pair of conductive rollers are provided on the frame, and the pair of conductive rollers are used to abut against the rods and wires;

[0015] A rod and wire straightening mechanism, comprising a straightening frame, disposed on the frame, wherein the cross-section of the straightening frame is polygonal, so that the interior of the straightening frame has a plurality of inner side surfaces;

[0016] A plurality of straightening rollers, each of which is used to abut against the rod and wire, and at least one straightening roller is provided on the inner side of each straightening frame, so that the plurality of straightening rollers can be distributed in a spiral shape on the rod and wire, and the straightening rollers are rotatably matched with the straightening frame;

[0017] wherein, by controlling the rods and wires to pass through the interior of the straightening frame along the conveying direction, the plurality of straightening rollers can straighten the rods and wires from a bent state to a straight state;

[0018] A plurality of straightening roller supports, wherein the inner side surface of each straightening frame is provided with at least one straightening roller support, and the straightening roller is rotatably connected to the straightening roller support;

[0019] The cross section of the straightening frame is a regular octagon, and the number of the straightening rollers is at least eight;

[0020] Multiple pulse power supplies are respectively arranged on the frame, and the positive poles of the multiple pulse power supplies are respectively connected to the multiple straightening rollers, and the negative poles of the multiple pulse power supplies are respectively connected to the conductive rollers, wherein the multiple straightening rollers, the multiple pulse power supplies, the conductive rollers and the rods and wires can form a parallel circuit for passing pulse current through the rods and wires.

[0021] According to the present invention, a pulse current assisted rod and wire spiral straightening device further includes:

[0022] a bracket, fixedly connected to the frame;

[0023] Two stepped copper shafts are rotatably connected to the upper and lower parts of the bracket respectively, and the two conductive rollers are fixedly connected to one end of the two stepped copper shafts respectively;

[0024] Two pairs of metal carbon brushes are respectively sleeved on the other ends of the two stepped copper shafts. The metal carbon brushes are connected with copper braided wires. The metal carbon brushes are connected to the negative electrode of the pulse power supply.

[0025] According to a pulse current assisted spiral straightening device for rods and wires provided by the present invention, a slider is slidably connected to the bracket, and the stepped copper shaft located above is rotatably connected to the slider via a ceramic bearing. A top cover is provided at the top of the bracket, and one end of the optical axis is fixedly connected to the top of the slider, and the other end of the optical axis passes through the top cover and slidably cooperates with the top cover.

[0026] A first spring is sleeved on the optical axis, and two ends of the first spring are fixedly connected to the top cover and the slider respectively;

[0027] When the rod and wire pass through the pair of conductive rollers, the conductive roller located above is pushed to compress the first spring.

[0028] According to a pulse current assisted spiral straightening device for rods and wires provided by the present invention, the metal carbon brush located at the top is fixedly connected to the slider, and the metal carbon brush located at the bottom is fixedly connected to the bracket. The metal carbon brush includes two carbon brush blocks, and the carbon brush blocks are in contact with the stepped copper shaft.

[0029] The copper braided wire is fixedly connected between the two carbon brush blocks located on the same metal carbon brush, and the copper braided wire is fixedly connected between the two metal carbon brushes;

[0030] One of the carbon brush blocks is connected to the negative electrode of the pulse power supply via an electric wire;

[0031] A second spring is fixedly connected between the two carbon brush blocks on the same metal carbon brush.

[0032] According to a pulse current assisted rod and wire spiral straightening device provided by the present invention, two ceramic tubes are fixedly connected to the bracket, the two conductive rollers are located between the two ceramic tubes, and the rod and wire pass through the ceramic tubes.

[0033] According to a pulse current assisted rod and wire straightening device provided by the present invention, two rod and wire guide rollers are fixedly connected to the frame, and the rods and wires on the reels are guided and transported into the straightening frame by the two rod and wire guide rollers.

[0034] A method for spiral straightening of rods and wires assisted by a pulse current comprises the following steps:

[0035] One end of the rod and wire is controlled to extend into the straightening frame and be straightened by a plurality of straightening rollers, and then the rod and wire are controlled to pass between a pair of conductive rollers, and the conductive rollers are made to abut against the rod and wire, so that a plurality of straightening rollers, a plurality of pulse power supplies, the conductive rollers and the rod and wire can form a parallel circuit to adjust the parameters of the pulse power supply, and perform pulse current assisted straightening on the rod and wire.

[0036] Compared with the prior art, the present invention has the following advantages and technical effects:

[0037] 1. The present invention provides a rod and wire straightening mechanism, in which the rods and wires are extended into a straightening frame and straightened by a plurality of spirally arranged straightening members. The spirally distributed straightening members ensure that the straightening points are evenly distributed along the circumferential direction during the straightening process of the rods and wires, thereby improving the straightening effect of the rods and wires and effectively removing the oxide layer on the surface of the rods and wires.

[0038] 2. The present invention provides a pulse current assisted rod and wire straightening device, in which multiple straightening rollers, multiple pulse power supplies, conductive rollers and rods and wires form a parallel circuit, and pulse current is passed through the rods and wires to achieve segmented electrification of the rods and wires. At the same time, when the rods and wires pass through a pair of conductive rollers, they can push the conductive roller located above to move, ensuring stable contact between the two conductive rollers and the rods and wires, thereby ensuring stable electrification of the parallel circuit, and straightening is performed with the assistance of an electric field. Electrification and straightening are carried out simultaneously, and the matrix current distribution is ensured to be uniform, and the rods and wires can pass high-density current, and the residual stress of the rods and wires is effectively removed by the pulse current.

[0039] 3. The present invention provides a pulse current assisted spiral straightening method for rods and wires, which performs straightening with the assistance of an electric field, thereby improving the straightening effect of the rods and wires. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive work.

[0041] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0042] Figure 2 This is a schematic structural diagram of the straightening member of the present invention;

[0043] Figure 3 is a cross-sectional view of the stent of the present invention;

[0044] Figure 4 Schematic diagram of the support structure of the present invention;

[0045] Figure 5 This is a schematic diagram of the structure of the energized clamp of the present invention;

[0046] Among them, 1. Frame; 2. Straightening frame; 3. Bracket; 4. Straightening roller bracket; 5. Straightening roller; 6. Stepped copper shaft; 7. Conductive roller; 8. Metal carbon brush; 9. Bottom plate; 10. Copper braided wire; 11. Slider; 12. Ceramic bearing; 13. Top cover; 14. Optical axis; 15. First spring; 16. Second spring; 17. Ceramic tube; 18. Pulse power supply; 19. Rod and wire guide roller; 20. Reel. DETAILED DESCRIPTION

[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0048] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0049] Reference Figures 1-5 The present invention provides a pulse current assisted rod and wire spiral straightening device, comprising:

[0050] Rack 1;

[0051] A pair of conductive rollers 7 are provided on the frame 1 and are used to abut against the rods and wires;

[0052] The rod and wire straightening mechanism includes a straightening frame 2, which is arranged on the frame 1. The cross-section of the straightening frame 2 is polygonal, so that the interior of the straightening frame 2 has multiple inner side surfaces.

[0053] A plurality of straightening rollers 5, each of which is used to abut against the rod and wire, and at least one straightening roller 5 is provided on the inner side of each straightening frame 2, so that the plurality of straightening rollers 5 can be distributed on the rod and wire in a spiral shape, and the straightening rollers 5 rotate in conjunction with the straightening frame 2;

[0054] The rods and wires are controlled to pass through the straightening frame 2 along the conveying direction so that the plurality of straightening rollers 5 can straighten the rods and wires from a bent state to a straight state.

[0055] Multiple straightening roller supports 4, each straightening frame 2 is provided with at least one straightening roller support 4 on its inner side, and a straightening roller 5 is rotatably connected to the straightening roller support 4;

[0056] The cross section of the straightening frame 2 is a regular octagon, and the number of straightening rollers 5 is at least eight;

[0057] Multiple pulse power supplies 18 are respectively arranged on the frame 1, and the positive poles of the multiple pulse power supplies 18 are respectively connected to the multiple straightening rollers 5, and the negative poles of the multiple pulse power supplies 18 are respectively connected to the conductive rollers 7, wherein the multiple straightening rollers 5, the multiple pulse power supplies 18, the conductive rollers 7 and the rods and wires can form a parallel circuit for passing pulse current into the rods and wires.

[0058] In one embodiment of the present invention, a plurality of straightening rollers 5 are evenly arranged in a spiral curve in the straightening frame 2. When the rod and wire are wound by the winder, they are changed from a straight line to a curve, and there is a large amount of stress inside. After the rod and wire are spread out, they are still in a bent state. During the straightening process of the rod and wire, the straightening points are evenly distributed in the circumferential direction and are spirally distributed, which can twist the rod and wire to a greater extent, provide an all-round force to resist the bending of the rod and wire, make it fully straightened, and thus improve the straightening effect of the rod and wire. In addition, the spiral torsion provided by the plurality of straightening rollers 5 and the friction on the surface of the straightening rollers 5 effectively remove the oxide layer on the surface of the rod and wire.

[0059] In one embodiment of the present invention, referring to Figure 2 The straightening roller bracket 4 is mounted on the straightening frame 2 by bolts.

[0060] In one embodiment of the present invention, referring to Figure 2 The cross section of the straightening frame 2 is a regular octagon, and a number of straightening rollers 5 are installed corresponding to the side walls of the regular octagon and are arranged in a spiral distribution.

[0061] In one embodiment of the present invention, referring to Figure 1 The number of pulse power supplies 18 corresponds to the number of straightening roller supports 4. The positive poles of several pulse power supplies 18 are connected to several straightening roller supports 4 through wires to energize the straightening rollers 5, and the negative poles of several pulse power supplies 18 are connected to the conductive rollers 7. Multiple straightening rollers 5, multiple pulse power supplies 18, conductive rollers 7 and rods and wires can form a parallel circuit to realize segmented electrification of the rods and wires, ensure uniform current distribution of the matrix, and enable the rods and wires to pass high-density current, and effectively remove the residual stress of the rods and wires through the pulse current.

[0062] Specifically, the principle is that the rod wire is equivalent to the main circuit of the whole circuit, each power supply is equivalent to a branch circuit, the current of the main circuit of the parallel circuit is equal to the sum of the currents of each branch circuit, a plurality of small-range power supplies are used to conduct large current density to the rod wire, and the mechanical properties of the rod wire are improved and the residual stress is removed under the influence of the electroplastic effect after being powered.

[0063] As an optional implementation, it further comprises a bracket 3 fixedly connected to the rack 1.

[0064] Two stepped copper shafts 6 are rotatably connected to the upper and lower parts of the bracket 3, and two conductive rollers 7 are fixedly connected to one end of the two stepped copper shafts 6.

[0065] Two pairs of metal carbon brushes 8 are sleeved on the other end of the two stepped copper shafts 6, the metal carbon brushes 8 are connected with copper braids 10, and the metal carbon brushes 8 are in communication with the negative electrode of the pulse power supply 18.

[0066] In an embodiment of the present application, referring to Figure 3 、 Figure 4 、 Figure 5 , the bracket 3 is fixedly connected to the rack 1 through the bottom plate 9, the conductive rollers 7 on the bracket 3 are connected with the metal carbon brushes 8 through the stepped copper shafts 6, the rod wire is powered through the contact between the two conductive rollers 7 and the rod wire, and the current in the rod wire is passed.

[0067] As an optional implementation, a sliding block 11 is slidably connected to the bracket 3, the upper stepped copper shaft 6 is rotatably connected to the sliding block 11 through a ceramic bearing 12, a top cover 13 is arranged at the top end of the bracket 3, one end of an optical shaft 14 is fixedly connected to the top end of the sliding block 11, and the other end of the optical shaft 14 penetrates through the top cover 13 and is in sliding fit with the top cover 13.

[0068] A first spring 15 is sleeved on the optical shaft 14, and the two ends of the first spring 15 are fixedly connected with the top cover 13 and the sliding block 11 respectively.

[0069] When the rod wire passes through a pair of conductive rollers 7, the upper conductive roller 7 can be pushed to compress the first spring 15.

[0070] In an embodiment of the present application, referring to Figure 3 , the optical shaft 14 slides on the top cover 13, the sliding block 11 and the first spring 15 are arranged to apply downward pressure to the upper conductive roller 7, and the stable contact between the two conductive rollers 7 and the rod wire is ensured.

[0071] As an optional implementation, the upper metal carbon brush 8 is fixedly connected to the sliding block 11, and the lower metal carbon brush 8 is fixedly connected to the bracket 3, the metal carbon brush 8 comprises two carbon brush blocks, and the carbon brush blocks are in contact with the stepped copper shaft 6.

[0072] A copper braided wire 10 is fixedly connected between the two carbon brush blocks located on the same metal carbon brush 8, and a copper braided wire 10 is fixedly connected between the two metal carbon brushes 8;

[0073] One of the carbon brush blocks is connected to the negative electrode of the pulse power supply 18 through an electric wire;

[0074] A second spring 16 is fixedly connected between the two carbon brush blocks on the same metal carbon brush 8 .

[0075] In one embodiment of the present invention, referring to Figure 5 The metal carbon brush 8 located at the top is fixed on the slider 11 and moves with the slider 11, and the metal carbon brush 8 located at the bottom is fixed on the bracket 3. In addition, the metal carbon brush 8 is two sliding carbon brush blocks. The two carbon brush blocks ensure stable contact between the metal carbon brush 8 and the stepped copper shaft 6 through the set second spring 16, thereby realizing the connectivity of the circuit and ensuring the stability of the power supply.

[0076] As an optional embodiment, two ceramic tubes 17 are fixedly connected to the bracket 3 , the two conductive rollers 7 are located between the two ceramic tubes 17 , and the rods and wires pass through the ceramic tubes 17 .

[0077] In one embodiment of the present invention, referring to Figure 4 Specifically, the bracket 3 is installed on the frame 1 through the bottom plate 9. The ceramic tube 17 and the rod and wire are located on the same axis. The rod and wire pass through the ceramic tube 17 at one end and the two conductive rollers 7 in turn and then pass through the ceramic tube 17 at the other end.

[0078] As an optional embodiment, two rod and wire guide rollers 19 are fixedly connected to the frame 1, and the rods and wires on the reel 20 are guided and transported into the straightening frame 2 through the two rod and wire guide rollers 19.

[0079] In one embodiment of the present invention, referring to Figure 1 In the initial state, the rod and wire are wound on the reel 20, one end of which is guided through two rod and wire guide rollers 19, and the tension of the two rod and wire guide rollers 19 is adjusted to adapt to different rods and wires.

[0080] A method for spiral straightening of rods and wires assisted by a pulse current comprises the following steps:

[0081] One end of the rod and wire is controlled to extend into the straightening frame 2 and be straightened by several straightening rollers 5. Then the rod and wire are controlled to pass between a pair of conductive rollers 7, and the conductive rollers 7 are made to abut against the rod and wire, so that multiple straightening rollers 5, multiple pulse power supplies 18, conductive rollers 7 and rod and wire can form a parallel circuit to adjust the parameters of the pulse power supply 18, and perform pulse current assisted straightening on the rod and wire.

[0082] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0083] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by persons skilled in the art should fall within the scope of protection defined by the claims of the present invention.

Claims

1. A pulse current assisted rod and wire spiral straightening device, characterized in that: include: Rack (1); A pair of conductive rollers (7) are arranged on the frame (1), and the pair of conductive rollers (7) are used to abut against the rods and wires; A rod and wire straightening mechanism comprises a straightening frame (2) arranged on the frame (1), wherein the cross-section of the straightening frame (2) is polygonal, so that the interior of the straightening frame (2) has a plurality of inner side surfaces; A plurality of straightening rollers (5), each of the straightening rollers (5) is used to abut against the rod and wire, and at least one straightening roller (5) is provided on the inner side surface of each straightening frame (2), so that the plurality of straightening rollers (5) can be distributed on the rod and wire in a spiral shape, and the straightening rollers (5) are rotatably matched with the straightening frame (2); The rods and wires are controlled to pass through the inside of the straightening frame (2) along the conveying direction, so that the plurality of straightening rollers (5) can straighten the rods and wires from a bent state to a straight state; a plurality of straightening rollers (5) are evenly arranged in a spiral curve in the straightening frame (2), and can twist the rods and wires; A plurality of straightening roller supports (4), wherein at least one straightening roller support (4) is provided on the inner side surface of each straightening frame (2), and the straightening roller (5) is rotatably connected to the straightening roller support (4); The cross section of the straightening frame (2) is a regular octagon, and the number of the straightening rollers (5) is at least eight; A plurality of pulse power supplies (18) are respectively arranged on the frame (1), and the positive electrodes of the plurality of pulse power supplies (18) are respectively connected to the plurality of straightening rollers (5), and the negative electrodes of the plurality of pulse power supplies (18) are respectively connected to the conductive rollers (7), wherein the plurality of straightening rollers (5), the plurality of pulse power supplies (18), the conductive rollers (7) and the rods and wires can form a parallel circuit for passing a pulse current through the rods and wires, thereby realizing segmented electrification of the rods and wires and removing residual stress of the rods and wires; a bracket (3) is fixedly connected to the frame (1); Two stepped copper shafts (6) are rotatably connected to the upper and lower parts of the bracket (3), and the two conductive rollers (7) are fixedly connected to one end of the two stepped copper shafts (6); Two pairs of metal carbon brushes (8) are respectively sleeved on the other ends of the two stepped copper shafts (6); the metal carbon brushes (8) are connected to copper braided wires (10); and the metal carbon brushes (8) are connected to the negative electrode of the pulse power supply (18).

2. The pulse current assisted rod and wire spiral straightening device according to claim 1, characterized in that: A slider (11) is slidably connected to the bracket (3), and the stepped copper shaft (6) located above is rotatably connected to the slider (11) via a ceramic bearing (12). A top cover (13) is provided at the top of the bracket (3), and one end of the optical axis (14) is fixedly connected to the top of the slider (11), and the other end of the optical axis (14) passes through the top cover (13) and is slidably engaged with the top cover (13); A first spring (15) is sleeved on the optical axis (14), and two ends of the first spring (15) are fixedly connected to the top cover (13) and the slider (11) respectively; When the rod wire passes through a pair of conductive rollers (7), the conductive roller (7) located above is pushed to compress the first spring (15).

3. The pulse current assisted rod and wire spiral straightening device according to claim 2, characterized in that: The metal carbon brush (8) located at the top is fixedly connected to the slider (11), and the metal carbon brush (8) located at the bottom is fixedly connected to the bracket (3), and the metal carbon brush (8) includes two carbon brush blocks, and the carbon brush blocks are in contact with the stepped copper shaft (6); The copper braided wire (10) is fixedly connected between the two carbon brush blocks located on the same metal carbon brush (8), and the copper braided wire (10) is fixedly connected between the two metal carbon brushes (8); One of the carbon brush blocks is connected to the negative electrode of the pulse power supply (18) via an electric wire; A second spring (16) is fixedly connected between the two carbon brush blocks on the same metal carbon brush (8).

4. The pulse current assisted rod and wire spiral straightening device according to claim 1, characterized in that: Two ceramic tubes (17) are fixedly connected to the bracket (3), the two conductive rollers (7) are located between the two ceramic tubes (17), and the rods and wires pass through the ceramic tubes (17).

5. The pulse current assisted rod and wire spiral straightening device according to claim 1, characterized in that: Two rod and wire guide rollers (19) are fixedly connected to the frame (1), and the rod and wire on the reel (20) are guided and transported into the straightening frame (2) by the two rod and wire guide rollers (19).

6. A method for spiral straightening of rods and wires assisted by pulse current, applicable to a device for spiral straightening of rods and wires assisted by pulse current according to any one of claims 1 to 5, characterized in that: The following steps are involved: One end of the rod and wire is controlled to extend into the straightening frame (2) and be straightened by a plurality of straightening rollers (5), and then the rod and wire is controlled to pass between a pair of conductive rollers (7) and the conductive rollers (7) are made to abut against the rod and wire, so that a plurality of straightening rollers (5), a plurality of pulse power supplies (18), the conductive rollers (7) and the rod and wire can form a parallel circuit, and the parameters of the pulse power supply (18) are adjusted to perform pulse current-assisted straightening on the rod and wire.

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