JPS60213326A - Straightening method of wire rod - Google Patents

Abstract

PURPOSE:To perform straightening easily without damaging a wire rod with low tensile force by providing in parallel in zigzags a roller having a ring groove on a rotary straightening device and by giving a winding movement to a wire rod with this ring groove. CONSTITUTION:A main body holding shaft 8 of a straightening device 6 is fitted to a lathe and a wire rod 4 is inserted from a shaft hole 9a of the main body 7 of the device and is penetrated into a shaft hole 9b via each ring groove 10a, 11a, 12a of straightening rollers 10, 11 and regulating roller 12, and a guide groove 15a of a guide block 15, and is projected from a hollow aperture of the holding shaft 8. The regulating roller 12 is then eccentrically adjusted adequately and a part of its peripheral surface is projected as desired to the side of the straightening rollers 10, 11 beyond the shaft core to make the wire material 4 in snaking condition. With this condition the wire rod 4 is drawn to an allow direction with rotating a lathe and the straightening device 6 and a straightening is performed with the winding given to every direction intersecting at right angles to the shaft core.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Technical Field of the Invention The present invention relates to a method for correcting bends in wire rods used for terminals, conductor wires, etc. of electronic devices.

(b) Background of the Technology Wire materials used for terminals, conductor wires, etc. of electronic devices are generally purchased from hoop materials or regular length materials and cut into desired lengths. However, since the material generally has undulations or bends and is not straight, it is necessary to straighten the material before cutting.

(C) Prior Art and Problems A conventional method for straightening this type of wire will be explained with reference to FIG. FIG. 1 is a sectional view showing a conventional wire straightening method.

In FIG. 1, 4 is a wire rod for straightening bends,
For example, it is a thin steel material with a diameter of 1 m. Reference numeral 5 denotes a correction tool made of a thick copper pipe bent into a crank shape. The inner diameter of the correction tool 5 is formed to be sufficiently larger than the outer diameter of the wire 4 (for example, the inner diameter is about 5 m).

Insert the wire 4 into the shaft hole of one shaft of the straightening tool 5, pull out the wire 4 from the shaft hole of the other shaft, and insert the end of the drawn wire 4 into the main shaft hole of the lathe 1. Headstock rear end surface I
The other shaft portion of the correction tool 5 is chucked with the scroll chuck 3 of the lathe 1 so as to protrude from A.

In this state, while rotating the lathe and rotating the straightening tool 5, grip the end of the wire 4 on the headstock rear end surface IA side with, for example, pliers, and pull out the wire 4 through the shaft hole of the straightening tool 5.

In this way, since the wire 4 passes through the rotating crank part, it is bent in all directions orthogonal to the axis, stress such as waviness or bending is removed, and the wire is straightened.

However, since the wire rod 4 is pulled out through the crank-shaped bent shaft hole, there is a problem that a strong tensile force is required and fatigue is large, and there is a risk that the wire rod 4 may be scratched at the bent corner of the correction tool 5.

(d) Object of the Invention In view of the above-mentioned conventional problems, the object of the present invention is to provide a rotating straightening device with rollers having ring grooves arranged side by side in a staggered manner, and to impart bending motion to the wire rod through the ring grooves. ,
To provide a method for straightening a wire that has a weak tensile force and does not cause damage to the wire.

(6) Structure of the Invention In order to achieve this object, the present invention provides a shaft hole through which the wire passes through the center of the end face of the main body, and a cylindrical main body holding shaft is provided on one end face of the main body to hold the main body. The main body of the device, which has a rotatable shaft, has at least two straighteners pivoted in parallel in the same direction with respect to the axis of the main body, such that the ring groove provided on the outer circumferential surface contacts the center of the axis of the main body of the device. A roller and a ring groove are provided on the outer peripheral surface and can be adjusted in a direction perpendicular to the axis of the main body of the device, and the correction roller is composed of an adjustment roller mounted in a staggered manner and mounted in a roller mounting hole. A wire is inserted through the shaft hole in the end surface of the main body, and is made to meander through the ring grooves of the correction roller and the adjustment roller, and by rotating the device main body, the wire is given bending motion, causing waviness, bending, etc. This removes the stress and makes it straight.

(f) Embodiments of the Invention The present invention will be described in detail below with reference to illustrated embodiments.

FIG. 2 is a diagram showing an embodiment of the present invention, in which (a) is a cross-sectional view in the axial direction, and (b) is a cross-sectional view taken along the dotted line M--M shown in (a).

In FIG. 2, 6 is a straightening device that is rotated in chunks on a lathe. The straightening device 6 includes a device main body 7 on which a straightening roller and the like are mounted, and a cylindrical main body holding shaft 8 formed to protrude from one end surface of the device main body 7.

The thick cylindrical device main body 7 is provided with an elongated rectangular roller mounting hole 7C at its axial center. And the main body holding shaft 8
At the center of the main body end surface 7B on the side where
A shaft hole 9b connecting the hollow holes is provided. Further, in the center of the opposite end surface 7A of the main body, there is provided a shaft hole 9a for introducing the wire 4 into the apparatus main body 7, which has an inner diameter larger than the outer diameter of the wire 4 and communicates with the roller mounting hole 7c.

A ring groove 10a and a ring are provided on the outer peripheral surfaces of each of the straightening rollers 10 and 11, which have the same shape and have a diameter that is approximately half the diameter of the device main body 7 and a width that is slightly smaller than the width of the roller mounting hole 7C. A groove 11a is provided respectively. The correction roller 10 and the correction roller 11 are each pivotally supported by a fixed shaft 13 on one side of the axis of the apparatus main body 7 so that the ring groove is in contact with the axis of the apparatus body 7, and are arranged side by side at a desired interval. In addition, in the figure, the correction roller 1 is located on the end surface 7A side of the main body.
0 is attached.

12 has the same shape as the correction roller 10, and has a ring groove 1 on the outer peripheral surface.
2a is an adjustment roller provided.

The adjustment roller 12 is provided with a shaft hole at an eccentric position, and is fixedly mounted in the roller mounting hole 7C by a fixing screw 14 passing through the shaft hole. The adjustment roller 12 is mounted at a staggered position relative to the correction roller 10 and the correction roller 11 with respect to the details of the apparatus main body 7. Therefore, by loosening the fixing screw 14 and rotating the adjusting roller 12 by hand, the adjustment roller 12 is adjusted so that a part of its outer peripheral surface protrudes a desired amount beyond the axis toward the correction roller 10 (correction roller 11). be able to.

Note that the correction roller 10 and the correction roller 11 rotate due to frictional resistance with the wire rod 4, but the adjustment roller 12 does not rotate.

Inside the roller mounting hole 7C, on the adjustment roller 12 side, there is a guide with a length from the part corresponding to the correction roller 11 to the inner wall of the main body end face 7B, and whose flat part coincides with the plane containing the axis of the apparatus main body 7. Block 15 is fixed. A guide groove 15a that coincides with the axis of the device main body 7 is provided in the plane portion of the guide block 15.

The straightening device 6 configured as described above is attached to the lathe 1 with the main body holding shaft 8 chucked by the scroll chuck 3. When the wire rod 4 is inserted into the roller mounting hole 7C through the shaft hole 9a from the end surface 7A side of the main body while the lathe 1 is stopped, the rings are arranged in parallel so that the tangent lines are straight lines.
102. It passes through the ring groove 12a, the ring groove 11a, and the guide groove 15a, easily penetrates the shaft hole 9b, passes through the hollow hole of the main body holding shaft 8, and the main shaft hole 2, and its tip protrudes to the rear end surface IA of the headstock.

Thereafter, the adjusting roller 12 is eccentrically adjusted as appropriate to cause a part of its outer peripheral surface to protrude by a desired amount toward the correction roller 10 (correction roller 11) beyond the axis. In this way, the wire 4 that was in contact with the ring groove 12a in a straight line is brought into a meandering state.

In this state, while rotating the lathe 1 and rotating the straightening device 6, the wire rod 4 is pulled out by gripping the tip portion of the wire rod 4 that protrudes toward the rear end surface IA of the headstock. By doing this, the wire rod 4 is fixed to the correction roller lO9 adjusting roller 12. Since it is meandered by the straightening roller 11 and the straightening device 6 is rotating, it is bent in all directions perpendicular to the axis, stress such as waviness or bending is removed, and the straightening is straightened.

In this case, since the straightening roller 10 and the straightening roller 11 rotate, the frictional resistance is extremely small, so the wire rod 4 is pulled out (the force is also small. Also, the wire rod 4 is not bent by rubbing the right angle corner as in the past, but in a circular shape). Since the wire meanderes while being guided by an arcuate ring groove or a guide groove, there is no risk of damage to the surface of the wire 4 due to scratches or the like.

It should be noted that the present invention is not limited to the illustrated embodiment, and may be modified, for example, by arranging three correction rollers and two adjustment rollers in a staggered manner, or by providing an eccentric structure for the adjustment rollers, depending on the degree of bending and deformation of the material. First, modifications can be made as appropriate within the scope of the claims, such as adjusting the movement of a shaft provided at the center of the shaft along a long hole.

(g) Detailed explanation of the invention As described above, the present invention is a straightening device in which rollers are arranged side by side in a staggered manner, which is rotated on a lathe to impart bending motion to the wire 4, and the structure is relatively simple. This is a method of straightening a wire that has excellent practical effects, such as low equipment cost, easy straightening with a small tensile force, and no risk of damaging the wire.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view showing a conventional wire straightening method, Fig. 2 is a view showing an embodiment of the present invention, and (a) is a cross-sectional view in the axial direction;
(B) is a sectional view of the point &';tM-M portion shown in (A). In the figure, 1 is a lathe, 2 is a spindle hole, 3 is a scroll chunk,
4 is a wire rod, 6 is a straightening device, 7 is a main body of the device, 7C is a roller mounting hole, 8 is a main body holding shaft, 9 is a shaft hole, 10.11 is a straightening roller, and 12 is an adjustment roller.

Claims (1)

[Claims] A device main body is provided with a shaft hole through which a wire passes through at the center of the end face of the main body, and a cylindrical main body holding shaft is provided on one end face of the main body so that the main body holding shaft is rotatable. at least two straightening rollers pivotally arranged in parallel in the same direction with respect to the axis so that the ring groove contacts the axis of the apparatus main body; The correction roller can be adjusted in the direction perpendicular to the correction roller, and the adjustment roller is installed in a zigzag manner in a roller installation hole. A method for straightening a wire rod, characterized in that the wire rod is straightened by applying a meandering motion through a ring groove of the adjusting roller and applying a bending motion by rotating the main body of the device.