JPS598464B2 - Method and device for twisting elongated metal materials - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for twisting an elongated metal profile, the purpose of which is to twist the metal profile at equal pitches by pulling out the metal profile wound around a bobbin in the axial direction from one end thereof. be.

Conventionally, to twist a long and slender metal profile, there are methods such as twist extrusion using a specially designed die, or chucking both ends of the extruded product and rotating one or both ends around the extrusion direction. However, no matter which method is adopted, there are drawbacks such as the pitch of twist, the angle of twist, etc. becoming non-uniform, or the twisting process cannot be performed as designed.

However, in this invention, the metal profile to be processed is wound around the bobbin in a spiral shape, and then pulled out from the outer end in a direction parallel to the axis of the bobbin, so it is twisted once for each outer circumference of the bobbin. They succeeded in continuously and easily performing uniform twisting.

That is, to explain this invention with reference to an embodiment, a cylindrical bobbin 1 having an outer diameter D and a length L is attached to a rotating shaft 2, and this bobbin 1 is arranged almost at right angles to a metal profile 4 extruded from an end platen 3. The rotating shaft 2 is rotated by a driving force transmitted from the output shaft of the motor 7 via pulleys 5 and 6.

The rotating shaft 2, motor 7, etc. are arranged on a machine stand 8,
Since a screw tube 10 is attached to the lower part of the machine base 8 and is screwed into a screw rod 9 parallel to the rotating shaft 2, the machine base 8 is moved along the screw rod 9 by rotating the screw rod 9.

After winding the metal shapes onto the bobbin 1 in a row in parallel as described above, remove the bobbin 1 from the rotating shaft (
(Figure 2) Next, the collar 1a of the bobbin 1 is fixed with the claw 22, and the wound metal shape is pulled from one end (terminus) (as shown in Figures 3), so that the metal shape has one outer circumferential length of the bobbin. On the other hand,
It gets twisted in one go.

Since the outer circumferential length is constant, the twist angle is also constant, making it possible to continuously obtain a homogeneous product.

However, this metal profile is cut to a predetermined length as necessary, and both ends are clamped with chucks 11 and 12, and the solid line arrow 1
If you apply a force greater than the elastic stress in the direction of 3 and 14 and pull it,
It is possible to fix the torsion of each part without causing springback, and to obtain a straight product.

In the above embodiment, the machine was moved in parallel, but the point is that the metal shapes are wound in parallel on the bobbin in one row, so instead of moving the machine, the extrusion position on the metal shape side may be changed, or The movement guide 15 (
1) may also be provided.

Next, FIG. 5 shows an embodiment in which the bobbin is moved.

That is, a spline is provided on the rotating shaft 16, a bobbin is fitted onto the spline so as to be slidable in the axial direction, a threaded rod 17 is installed parallel to the rotating shaft 16, a guide tool 18 is screwed thereon, and the guide tool 18 is screwed onto the threaded rod 17. It is guided by a guide rod 19 parallel to 11.

In the above implementation device, when input is introduced into the booley 5 to rotate the rotary shaft, the rotary shaft and the screw rod are rotated at a predetermined angle by interlocking gears 20 and 21 fixed to the rotary shaft 16 and the screw rod 1γ.

Therefore, the bobbin is moved in parallel in the axial direction by the width of one metal shape per revolution via the guide, and the metal shapes can be wound in an orderly manner.

That is, according to the method of the present invention, the twist angle of the metal profile can be adjusted by changing the diameter of the bobbin, and continuous and uniform twisting can be performed.

However, metal shapes can be applied to extruded shapes, pipes of various cross sections, etc.

Further, since the metal profile extruded from the end platen is immediately wound onto the cylindrical bobbin and subjected to the required processing, there is an effect that the work can be carried out efficiently.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a state in which a metal profile is wound up in an embodiment of the present invention, FIG. 2 is a perspective view of a bobbin on which a metal profile is wound, and FIG. 3 is a perspective view showing a state in which the metal profile is pulled out from one end. FIG. 4 is a front view showing a twisting finish state, and FIG. 5 is a front view of an implementation device equipped with a bobbin fixed-quantity moving device. 1... Cylindrical bobbin, 2... Rotating shaft,
3... End platen, 4... Metal profile, 5, 6... Pulley, γ... Motor, 8... Machine base, 9...screw rod, 10
... Spiral tube, 11, 12 ... Chuck,
13, 14... Solid line arrow, 15... Movement guide, 16... Rotating shaft, 17...
Screw rod, 18... Guide tool, 19... Guide rod, 20, 21... Gear, 22...
nail.

Claims (1)

[Claims] 1. The metal shape extruded from the end platen is wound onto a cylindrical bobbin that has an axis perpendicular to the extrusion direction of the metal shape and moves in the axial direction, and the metal shape is twisted around the cylindrical bobbin. The spirally wound metal shape is wound in parallel in one row without applying force, and then one end of the spirally wound metal shape is pulled out in a direction parallel to the axis of the bobbin to twist it at an even pitch once per outer circumference of the bobbin. 1. A method for twisting a metal shape, which comprises: pulling both ends of the pulled-out metal shape in opposite directions to fix the twist and make a straight metal shape.