Multi-roller spinning type metal wire straightening equipment

Abstract

The invention provides multi-roller spinning type metal wire straightening equipment, which belongs to the technical field of wire straightening equipment and comprises a machine table, a wire leading unit, a straightening cylinder and straightening compression rollers. Wherein a graphite roller is arranged on the side, making contact with a wire rod, of the straightening pressing roller, the graphite roller is parallel to the axis of the straightening pressing roller, floating rods are arranged at the two ends of the graphite roller, and the graphite roller is movably connected to the adjusting support through the floating rods. The graphite roller is arranged on one side of the straightening compression roller, when the wire is rotationally straightened, the graphite roller makes contact with the wire under the action of centrifugal force, the graphite roller rubs with the wire along with rotation of the straightening cylinder, a graphite lubricating layer with the lubricating effect can be formed on the surface of the wire, and the lubricating layer formed by graphite has good stability; after being in contact with the straightening compression roller, the device is not easily influenced by centrifugal force, so that the straightening compression roller is prevented from being scattered due to the centrifugal force after being adhered with the tape.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of wire straightening equipment, and particularly relates to a multi-roller spinning type metal wire straightening equipment. BACKGROUND

[0002] A rotary straightening machine is a key equipment for correcting the bending deformation and ellipticity of long straight workpieces such as bars, wires and pipes in metal processing. Its core working principle is to use multiple groups (usually 5 rollers, 7 rollers, 9 rollers or more) of staggered arrangement, independently adjustable angle and pressure straightening rollers to make the workpiece bear repeated and controllable bending stress when continuously passing through the roller gap. The straightness and roundness of the workpiece in the length and circumferential directions are uniformly eliminated, and finally the precise product with high straightness and roundness is obtained.

[0003] In the rotary straightening process, the rotary friction behavior of the contact interface between the straightening roller and the copper workpiece is easy to induce surface defects. Especially for low-hardness copper materials, the frictional shear force will cause the plastic flow of the material surface layer, forming periodic spiral lines. At present, liquid lubricant is injected into the roller-material contact area to suppress the generation of lines by reducing the interface friction coefficient. However, under high-speed rotating conditions, the lubricant on the surface of the straightening roller is dominated by centrifugal force to produce radial scattering, and with the rotation of the straightening roller, the lubricant on the surface of the copper material will also be adhered to the straightening roller and scattered radially, making it difficult to maintain a continuous and stable lubricating film in the roller gap. This lubrication failure phenomenon leads to an increase in the interface friction energy barrier, ultimately causing the recurrence of copper surface spiral line defects. SUMMARY

[0004] In view of the above, in order to overcome the defects of the prior art, the purpose of the present application is to provide a multi-roller spinning type metal wire straightening equipment to at least partially solve the problems raised in the background art.

[0005] The technical scheme adopted by the present application is as follows: the present application provides a multi-roller spinning type metal wire straightening equipment, which comprises: A machine table, two ends of the operation table surface of which are respectively provided with a lead wire unit for pulling the wire; A straightening cylinder is arranged on the operation table surface of the machine table and located between the two lead wire units, and the straightening cylinder is arranged to be able to be pulled and rotated by an external driving unit; Two groups of straightening pressure rollers arranged in a staggered manner are installed on the straightening cylinder, and the straightening pressure rollers are connected to the straightening cylinder through an adjusting support, so that the angle and pressure of the straightening pressure rollers can be adjusted; The straightening pressure roller is provided with a graphite roller on the side in contact with the wire rod, the graphite roller is arranged in parallel to the axis of the straightening pressure roller, both ends of the graphite roller are provided with floating rods, the graphite roller is movably connected to the adjusting support through the floating rods, and the angle of the graphite roller can be adjusted synchronously with the straightening pressure roller.

[0006] Further, both ends of the floating rod extend to both sides of the rotation axis of the straightening cylinder, the graphite roller is connected to the first end of the floating rod, and a counterweight is connected to the second end of the floating rod, so that the centrifugal force of the second end of the floating rod is greater than the centrifugal force of the first end of the floating rod when the straightening cylinder rotates.

[0007] Further, the adjusting support comprises a floating plate and a mounting frame, both ends of the straightening pressure roller are connected to the mounting frame, and the mounting frame is rotatably connected to the floating plate, so that the angle of the straightening pressure roller relative to the wire rod can be adjusted. Both ends of the floating plate are provided with adjusting screws, the adjusting screws are fixed on the straightening cylinder, and both ends of the floating plate are slidably connected to the adjusting screws, so that the pressure of the straightening pressure roller on the wire rod can be adjusted.

[0008] Further, one end of the adjusting screw away from the rotation center of the straightening cylinder is connected with an adjusting nut, and the position of the adjusting nut on the adjusting screw is adjusted to change the pressure of the straightening pressure roller on the wire rod.

[0009] Further, one end of the adjusting screw close to the rotation center of the straightening cylinder is sleeved with a spring, and the spring is configured to apply an elastic pushing force to the floating plate, so that the straightening pressure roller can move away from the rotation center of the straightening cylinder.

[0010] Further, the mounting frame is connected with a connecting screw, the mounting frame is rotatably connected to the floating plate through the connecting screw, a pressing nut is connected to the connecting screw, and the pressing nut is located on the side of the floating plate away from the mounting frame.

[0011] Further, one side of the straightening pressure roller away from the rotation center of the straightening cylinder is provided with a scraper.

[0012] Further, both sides of the mounting frame are provided with guide frames, and the floating rods are slidably connected to the guide frames.

[0013] Further, both ends of the straightening cylinder are provided with shaft tubes, the machine table is provided with bearings corresponding to the shaft tubes, and the straightening cylinder is connected to the bearings through the shaft tubes.

[0014] Further, the shaft pipe on any one side is connected with a belt pulley, and the external driving device is connected with the belt pulley through a transmission belt.

[0015] Advantageous effects: By arranging the graphite roller on one side of the straightening roller, when the wire is rotated, the graphite roller is in contact with the wire under the action of centrifugal force, and with the rotation of the straightening cylinder, the graphite roller is in friction with the wire, and a graphite lubricating layer with lubricating effect is formed on the surface of the wire. The lubricating layer formed by graphite has good stability and is not easily affected by centrifugal force after contacting the straightening roller, avoiding scattering due to centrifugal force after the straightening roller sticks. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A structure schematic view of a multi-roller spinning type metal wire straightening equipment is provided for the embodiment of the present application. Figure 2 A top view of a multi-roller spinning type metal wire straightening equipment is provided for the embodiment of the present application. Figure 3 A structure schematic view of a straightening cylinder in a multi-roller spinning type metal wire straightening equipment is provided for the embodiment of the present application. Figure 4 A position distribution schematic view of a straightening roller in a straightening cylinder in a multi-roller spinning type metal wire straightening equipment is provided for the embodiment of the present application. Figure 5 A structure schematic view of an adjusting support in a multi-roller spinning type metal wire straightening equipment is provided for the embodiment of the present application. Figure 6 A mounting position schematic view of a straightening roller and a graphite roller in a multi-roller spinning type metal wire straightening equipment is provided for the embodiment of the present application.

[0017] 1, machine table; 2, lead unit; 3, straightening cylinder; 31, shaft pipe; 32, belt pulley; 4, straightening roller; 41, floating plate; 42, mounting bracket; 43, adjusting screw; 44, adjusting nut; 45, spring; 46, connecting screw; 47, compression nut; 5, graphite roller; 51, floating rod; 52, counterweight; 53, guide bracket; 6, scraper.

[0018] The accompanying drawings are used to provide further understanding of the embodiments and constitute a part of the specification, and are used to explain the embodiments together with the embodiments, and do not constitute a limitation on the embodiments. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application; based on the embodiments, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope.

[0020] In the description of the embodiments, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments.

[0021] In combination with Figure 1 As shown in the drawings, the embodiments of the present application provide a multi-roller spinning type metal wire straightening equipment, which comprises a machine table 1, a lead unit 2, a straightening cylinder 3 and a straightening pressure roller 4.

[0022] The lead unit 2 is provided with two, which are arranged at both ends of the operation table surface of the machine table 1, respectively, and is used to introduce the wire to be straightened into the operation table surface of the machine table 1, and to lead out the straightened wire.

[0023] In a specific embodiment, the lead unit 2 comprises two groups of traction rollers, which are respectively located on both sides of the wire conveying path and are arranged in pairs of symmetry, so that the two groups of traction rollers can clamp the wire, and the inside of the machine table 1 is provided with a power unit, which drives the two groups of traction rollers to rotate, and the rotation directions are opposite, therefore, through the traction of the two groups of traction rollers, the wire to be straightened can be introduced into the operation table of the machine table 1, and the straightened wire can be led out.

[0024] In combination with Figure 1 and Figure 2 As shown in the drawings, the straightening cylinder 3 is arranged on the operation table surface of the machine table 1 and located between the two lead units 2, the straightening cylinder 3 is arranged to be able to be driven to rotate by an external driving unit, the straightening cylinder 3 is provided with two groups of straightening pressure rollers 4 arranged in interlacing manner, the wire to be straightened is introduced into the straightening cylinder 3 through the lead unit 2 at one end, passes through between the two groups of straightening pressure rollers 4, and then is led out by the lead unit 2 at the other end, through the rotation of the straightening cylinder 3, the two groups of straightening pressure rollers 4 inside the straightening cylinder 3 spin the wire passing through the inside of the straightening cylinder 3, so as to eliminate the straightness and roundness of the workpiece.

[0025] In combination with Figure 1 , Figure 3 and Figure 4As shown, both ends of the straightening cylinder 3 are provided with shaft tubes 31, and the machine table 1 is provided with bearings corresponding to the shaft tubes 31, and the straightening cylinder 3 is connected to the bearings through the shaft tubes 31. The shaft tubes 31 are hollow tubular structures, so that the wire can be introduced through the center of the shaft tube 31 at one end of the straightening cylinder 3, and after penetrating through the straightening cylinder 3, it can be introduced through the center of the shaft tube 31 at the other end of the straightening cylinder 3.

[0026] Further, the shaft tube 31 on any one side is connected with a belt pulley 32, and the external driving device is connected with the belt pulley 32 through a transmission belt, so that the external driving device drives the straightening cylinder 3 to rotate through the belt transmission.

[0027] It should be noted that the driving unit for driving the lead unit 2 pulling roller and the driving device for driving the straightening cylinder 3 are arranged inside the machine table 1.

[0028] In combination Figure 5 And Figure 6 As shown, the straightening pressure roller 4 is connected to the straightening cylinder 3 through an adjusting support, so that the angle and pressure of the straightening pressure roller 4 can be adjusted.

[0029] In a specific embodiment, the adjusting support includes a floating plate 41 and a mounting bracket 42, both ends of the straightening pressure roller 4 are connected to the mounting bracket 42, the mounting bracket 42 is connected with a connecting screw 46, the floating plate 41 is provided with a hole corresponding to the connecting screw 46, one end of the connecting screw 46 is connected in the hole on the floating plate 41, so that the mounting bracket 42 can rotate around the connecting screw 46 as the rotation axis, thereby adjusting the angle of the straightening pressure roller 4 with the wire, the connecting screw 46 is connected with a compression nut 47, the compression nut 47 is located on the side of the floating plate 41 away from the mounting bracket 42, so that the mounting bracket 42 can be rotatably connected to the floating plate 41 through the connecting screw 46, and the angle of the mounting bracket 42 can be locked by tightening the compression nut 47.

[0030] In a specific embodiment, both ends of the floating plate 41 are provided with adjusting screws 43, the adjusting screws 43 are fixed on the straightening cylinder 3, both ends of the floating plate 41 are slidingly connected to the adjusting screws 43, and the sliding direction of the floating plate 41 is parallel to the radial direction of the rotation of the straightening cylinder 3, so that the straightening pressure roller 4 can be adjusted by moving along the radial direction of the rotation of the straightening cylinder 3, when the straightening pressure roller 4 moves towards the rotation center of the straightening cylinder 3, the pressure on the wire can be increased, and correspondingly, when the straightening pressure roller 4 moves away from the rotation center of the straightening cylinder 3, the pressure on the wire can be reduced, so that the pressure of the straightening pressure roller 4 on the wire can be adjusted.

[0031] Further, one end of the adjusting screw 43 away from the rotation center of the straightening cylinder 3 is connected with an adjusting nut 44, by rotating the adjusting nut 44, the position of the adjusting nut 44 on the adjusting screw 43 can be adjusted.

[0032] When it is needed to move the straightening pressure roller 4 to the rotation center of the straightening cylinder 3, the straightening pressure roller 4 needs to bend the wire, and the force required for the movement is large, therefore, the tool rotation adjusting nut 44 is adopted, and the rotation pressure of the adjusting nut 44 is used to move the straightening pressure roller 4, so as to change the pressure of the straightening pressure roller 4 on the wire, and at the same time, the adjusting nut 44 can limit the position of the straightening pressure roller 4, so that the straightening pressure roller 4 can exert a stable pressure on the wire.

[0033] Further, the adjusting screw 43 is sleeved with a spring 45 at one end close to the rotation center of the straightening cylinder 3, and the spring 45 is configured to exert an elastic pushing force on the floating plate 41, so that the straightening pressure roller 4 can move away from the rotation center of the straightening cylinder 3, and when it is needed to move the straightening pressure roller 4 away from the rotation center of the straightening cylinder 3, the adjusting nut 44 is rotated and moved away from the rotation center of the straightening cylinder 3, at this time, under the elastic pushing force of the spring 45, the straightening pressure roller 4 can be pushed by the spring 45 away from the rotation center of the straightening cylinder 3.

[0034] In this way, the wire to be straightened is introduced into the straightening cylinder 3 through the lead-in unit 2 at one end, passes between the two groups of straightening pressure rollers 4, and then is led out through the lead-in unit 2 at the other end, the angle and pressure of the straightening pressure roller 4 are adjusted, and then the straightening cylinder 3 is rotated, and the two groups of straightening pressure rollers 4 inside the straightening cylinder 3 rotate and press the wire passing through the inside of the straightening cylinder 3, so as to eliminate the straightness and roundness of the workpiece.

[0035] In combination Figure 5 and Figure 6 As shown in the figure, the side of the straightening pressure roller 4 in contact with the wire is provided with a graphite roller 5, and the straightening pressure roller 4 and the graphite roller 5 are respectively located on both sides of the wire, and the graphite roller 5 is arranged parallel to the axis of the straightening pressure roller 4. In the process of rotating and straightening, the straightening pressure roller 4 and the graphite roller 5 are both in contact with the wire, and as the straightening cylinder 3 rotates, the graphite roller 5 rotates and rubs around the wire, and can form a graphite lubricating layer with lubricating effect on the surface of the wire, thereby reducing the friction between the straightening pressure roller 4 and the wire, and the lubricating layer formed by the graphite has good stability and is not easily affected by centrifugal force after being in contact with the straightening pressure roller 4, thereby avoiding scattering of the straightening pressure roller 4 due to centrifugal force.

[0036] Further, the graphite roller 5 is provided with a floating rod 51 at both ends, and the graphite roller 5 is movably connected to the adjusting bracket through the floating rod 51, so that the angle of the graphite roller 5 can be adjusted synchronously with the straightening pressure roller 4.

[0037] In specific embodiments, the two ends of the floating rod 51 extend to the two sides of the rotation axis of the straightening cylinder 3, the graphite roller 5 is connected to the first end of the floating rod 51, and the second end of the floating rod 51 is connected with a counterweight 52, the mass of the counterweight 52 is greater than that of the graphite roller 5, so that under the condition of the same rotating speed, the centrifugal force of the second end of the floating rod 51 is greater than that of the first end of the floating rod 51 when the straightening cylinder 3 rotates to straighten, so that the graphite roller 5 can be dragged by the centrifugal force of the counterweight 52 and move to the center of rotation of the straightening cylinder 3, that is, the pressure on the wire, so that the graphite roller 5 is always in contact with the wire, and the two sides of the mounting frame 42 are provided with guide frames 53, and the floating rod 51 is slidingly connected to the guide frames 53, and as the graphite roller 5 is worn by the friction with the wire, the diameter of the graphite roller 5 gradually decreases, but under the action of the centrifugal force, the graphite roller 5 can always keep contact with the wire and is not affected by the change in diameter.

[0038] Therefore, when the wire is rotated to straighten, the graphite roller 5 is in contact with the wire under the action of the centrifugal force, and as the straightening cylinder 3 rotates, the graphite roller 5 rotates around the wire to rub and can form a graphite lubricating layer with a lubricating effect on the surface of the wire, thereby reducing the friction between the straightening pressure roller 4 and the wire, and the graphite lubricating layer has good stability and is not easily affected by the centrifugal force after being in contact with the straightening pressure roller 4, so that the straightening pressure roller 4 is not scattered due to the centrifugal force after being adhered, and under the action of the centrifugal force, the graphite roller 5 can always keep contact with the wire and is not affected by the change in diameter of the graphite roller 5.

[0039] As shown in Figs. Figure 5 and Figure 6 As shown in Figs.

[0040] In a preferred embodiment, the distance between the scraper 6 and the straightening pressure roller 4 is less than 0.1mm.

[0041] The working principle of the present application is as follows: the wire to be straightened is introduced into the straightening cylinder 3 through the lead unit 2 at one end, passes through between the two groups of straightening pressure rollers 4, and then is led out through the lead unit 2 at the other end, the straightening pressure roller 4 can be moved by rotating the adjusting nut 44 to change the pressure of the straightening pressure roller 4 on the wire, the angle between the straightening pressure roller 4 and the wire is adjusted by loosening the compression nut 47, rotating the mounting frame 42, then tightening the compression nut 47 to lock the angle of the mounting frame 42, and finally the straightening cylinder 3 is rotated by the external driving unit, and the two groups of straightening pressure rollers 4 inside the straightening cylinder 3 rotate to press the wire passing through the inside of the straightening cylinder 3 to eliminate the straightness and roundness of the workpiece.

[0042] With the rotation of the straightening cylinder 3, the graphite roller 5 rotates and rubs the wire, and can form a graphite lubricating layer with lubricating effect on the surface of the wire, thereby reducing the friction between the straightening pressure roller 4 and the wire. The graphite lubricating layer has good stability and is not easily affected by centrifugal force after contacting the straightening pressure roller 4, avoiding scattering due to centrifugal force after the straightening pressure roller 4 sticks to the wire. Under the action of centrifugal force, the graphite roller 5 can always be in contact with the wire and is not affected by the diameter change of the graphite roller 5.

[0043] In summary, by arranging the graphite roller 5 on one side of the straightening pressure roller 4, the graphite roller 5 contacts the wire under the action of centrifugal force when rotating the straightening wire, and rubs the wire with the rotation of the straightening cylinder 3. The graphite roller 5 can form a graphite lubricating layer with lubricating effect on the surface of the wire. The graphite lubricating layer has good stability and is not easily affected by centrifugal force after contacting the straightening pressure roller 4, avoiding scattering due to centrifugal force after the straightening pressure roller 4 sticks to the wire. Under the action of centrifugal force, the graphite roller 5 can always be in contact with the wire and is not affected by the diameter change of the graphite roller 5.

[0044] By arranging the scraper 6 on the side of the straightening pressure roller 4 away from the rotation center of the straightening cylinder 3, and maintaining a certain distance between the scraper 6 and the straightening pressure roller 4, a gap is formed between them for the graphite lubricating layer to pass through. At the same time, when there are large particles of foreign matter on the surface of the straightening pressure roller 4, they can be blocked by the scraper 6, avoiding scratches on the wire caused by the rotation of the straightening pressure roller 4.

[0045] It should be noted that in this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0046] The above describes the embodiments, which are not limited, and the drawings shown are only one of the embodiments, and the actual structure is not limited thereto. In general, if a person skilled in the art is inspired, without departing from the creative purpose, without creative design, similar structure and embodiments of the technical solution can be designed, which shall belong to the protection scope.

Claims

1. A multi-roller spinning type metal wire straightening device, characterized in that, include: The machine (1) has a lead wire unit (2) for pulling wires at both ends of its operating table. A straightening cylinder (3) is set on the operating table of the machine tool (1) and located between the two lead wire units (2). The straightening cylinder (3) is configured to be traction-rotated by an external drive unit. The straightening cylinder (3) is equipped with two sets of straightening pressure rollers (4) arranged in an alternating manner. The straightening pressure rollers (4) are connected to the straightening cylinder (3) through an adjusting bracket, so that the angle and pressure of the straightening pressure rollers (4) can be adjusted. Among them, a graphite roller (5) is installed on the side of the straightening pressure roller (4) that contacts the wire. The graphite roller (5) is arranged parallel to the axis of the straightening pressure roller (4). Both ends of the graphite roller (5) are provided with floating rods (51). The graphite roller (5) is movably connected to the adjustment bracket through the floating rods (51) so that the angle of the graphite roller (5) can be adjusted synchronously with the straightening pressure roller (4).

2. The multi-roller spinning type metal wire straightening equipment according to claim 1, characterized in that: The two ends of the floating rod (51) extend to both sides of the rotation axis of the straightening cylinder (3). The graphite roller (5) is connected to the first end of the floating rod (51). The second end of the floating rod (51) is connected to a counterweight (52), so that the centrifugal force of the second end of the floating rod (51) when the straightening cylinder (3) rotates is greater than the centrifugal force of the first end of the floating rod (51).

3. The multi-roller spinning type metal wire straightening equipment according to claim 1, characterized in that: The adjusting bracket includes a floating plate (41) and a mounting frame (42). The two ends of the straightening pressure roller (4) are connected to the mounting frame (42). The mounting frame (42) is rotatably connected to the floating plate (41) so that the angle between the straightening pressure roller (4) and the wire can be adjusted. Both ends of the floating plate (41) are provided with adjusting screws (43), the adjusting screws (43) are fixed on the straightening cylinder (3), and both ends of the floating plate (41) are slidably connected to the adjusting screws (43) so that the pressure of the straightening roller (4) on the wire can be adjusted.

4. The multi-roller spinning type metal wire straightening equipment according to claim 3, characterized in that: An adjusting nut (44) is connected to one end of the adjusting screw (43) away from the rotation center of the straightening cylinder (3). By adjusting the position of the adjusting nut (44) on the adjusting screw (43), the pressure of the straightening roller (4) on the wire is changed.

5. The multi-roller spinning type metal wire straightening equipment according to claim 4, characterized in that: A spring (45) is fitted on one end of the adjusting screw (43) near the rotation center of the straightening cylinder (3). The spring (45) is configured to apply an elastic thrust to the floating plate (41), so that the straightening pressure roller (4) can move away from the rotation center of the straightening cylinder (3).

6. The multi-roller spinning type metal wire straightening equipment according to claim 3, characterized in that: The mounting bracket (42) is connected to a connecting screw (46), and the mounting bracket (42) is rotatably connected to the floating plate (41) via the connecting screw (46). A clamping nut (47) is connected to the connecting screw (46), and the clamping nut (47) is located on the side of the floating plate (41) away from the mounting bracket (42).

7. The multi-roller spinning type metal wire straightening equipment according to claim 1, characterized in that: The straightening roller (4) has a scraper (6) on the side away from the rotation center of the straightening cylinder (3).

8. The multi-roller spinning type metal wire straightening equipment according to claim 3, characterized in that: The mounting bracket (42) is provided with guide brackets (53) on both sides, and the floating rod (51) is slidably connected to the guide brackets (53).

9. The multi-roller spinning type metal wire straightening equipment according to claim 1, characterized in that: Both ends of the straightening cylinder (3) are provided with shaft tubes (31), and the machine base (1) is provided with bearings corresponding to the shaft tubes (31). The straightening cylinder (3) is connected to the bearings through the shaft tubes (31).

10. The multi-roller spinning type metal wire straightening equipment according to claim 9, characterized in that: A pulley (32) is connected to the shaft tube (31) on either side, and the external drive device is connected to the pulley (32) via a transmission belt.

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