JPS5918133B2 - Wire rod scale peeling method and device using tensile force and twisting force - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention continuously peels off scale, such as black scale, from a wire by simultaneously applying varying tensile force and twisting force to a predetermined section of the wire during the wire feeding process. This invention relates to a method for removing scale from wire rods using tensile force and twisting force.

Conventionally, methods for removing scale from wire rods include pickling using hydrochloric acid or sulfuric acid, a so-called bending method in which the wire rod is bent by passing it between a plurality of vertically displaced rollers, or There is a shot blast method in which steel balls, glass beads, etc. are emitted onto the outer periphery of the wire, or a method that uses a combination of these methods. The reality is that it is difficult to remove scale sufficiently using methods of 2 or less.

The present invention aims to provide an efficient scale removal method that eliminates the drawbacks of conventional scale removal methods.

The present invention will be explained according to the embodiment shown in FIGS. 1 and 2.

In FIG. 1, 1 indicates a payoff stand.

The wire W from the payoff stand 1 is kept in a predetermined tension state by the feed rollers 2, and is fed in the direction of the arrow.
It is wound up by a winding machine 8.

In front of the feed roller 2 in the feed direction is a rotating body 3 configured to feed the wire in a state where it is wound one or more turns around a predetermined surface of the wire winding section. A cab stern 5 equipped with a swing guide 6 is disposed, and a rotating body 7 having the same configuration as the rotating body 3 is disposed in front of the cab stern 5 in the feeding direction.

As the rotating bodies 3 and 7, for example, a known cab stern as shown in FIGS. 1 and 2a can be used.

The cab stern 3 includes a wire rod winding section 31 having a tapered outer circumferential surface and a wire rod guide 521 provided at a position facing a predetermined outer circumferential surface of the winding section 31.

The winding section 31 self-rotates as a rotating shaft 33 pivotally attached thereto rotates.

The cab stern 7 also has exactly the same configuration as the cab stern 3.

The cab stern 5 also has the same configuration as the cab stern 3, but the capstern 5 has a certain inclination angle θ with respect to the wire feeding direction, and is capable of swinging in a plane along the above inclination angle. , is attached to the swing guide 6.

The mechanical relationship between the cab stern 5 and the swing guide 6 can be set as follows, for example.

The shaft 51 extends a predetermined distance from the top and bottom surfaces along the central vertical line of the wire winding section 50 of the cab stern 5.

52 stands out.

A rotating body 53.54 is attached to the tip of the shaft 51.52.

The swing guide 6 is a hollow circular body as shown in FIG. 2 when viewed from the wire feeding direction, and a guide groove 61 is formed along the circumference of the circular body. While the section 50 is held at a certain angle of inclination with respect to the wire feeding direction, the swinging on the inclined plane is guided by the rotational movement of the rotating bodies 53 and 54 along the grooves 61. 522 is provided at the tip of the L-shaped member fully supported by the guide fixing frame 523 that is fully fixed to the shaft 52. Furthermore, the guide fixing frame 523 is fixed to the shaft 52 by rotating bodies 541 and 542 provided at both ends thereof. It is configured to be rotatable along the guide groove 61.

Therefore, against the swinging of the cab stern 5, the wire guide 52
2 swing in synchronization, the wire rod is always wound at a predetermined position on the cab stern 5.

In such a configuration, the feed roller 2, the rotary body 3, the cab stern 5, and the rotary body 7 are each set to rotate at a predetermined rotational speed in order to feed the wire W at a predetermined speed.

The wire W from the payoff stand 1 passes through the feed roller 2 and is wound one or more turns around the tapered wire winding part 31 of the rotating body 3 by the wire guide 521, and then is wound as the rotating body 3 rotates by itself. , sent to Cab Stern 5.

The wire W is guided by the wire guide 5220 and is wound one or more turns around the tapered wire winding part 50 of the cab stern 5, and then similarly wound one or more turns around the tapered wire winding part 70 of the rotating body 7. It is wound up and taken up by a winding machine 8 as the rotating body 7 rotates by itself.

In the above-mentioned wire rod feeding process, the cab stern 5 is guided by a groove 61 provided along the circumference of the swing guide 6, and moves on an inclined surface with respect to the wire rod feeding direction, which is inclined by a predetermined angle θ, for a predetermined angle a4+b. oscillate.

The predetermined inclination angle θ of the inclined surface with respect to the wire rod feeding direction is set to an angle sufficient to obtain a tensile force from the vertical plane, and the predetermined swing angle a4+b of the cab stern, which is swung by the swing guide, is set to provide a sufficient twisting force to the wire rod. Set at a sufficient angle to give

As a result, varying tensile force and twisting force are simultaneously applied to the wire between the rotating bodies 3 and 7 via the cab stern.

That is, as mentioned above, in the wire rod feeding process, the wire rod W
The wire guides 521 and 522 are configured to feed one or more turns around the predetermined outer peripheral surfaces of the rotating body 3, the cab stern 5, and the rotating body 7, respectively, so that the cab stern 5 can be oscillated. If the rotating body 3
and the cab stern 5, and the wire between the cab stern 5 and the rotating body 7 are in the same state as if they were fixed by the rotating body 3, the cab stern 5, and the rotating body 7, respectively, without shifting in the wire feeding direction, Varying tensile and torsional forces are applied simultaneously to effectively descale the wire.

Although the fine scale has peeled off, the fine scale remaining on the surface of the wire W can be removed by a fine scale removing device 4 consisting of a rotating brush or a known gas or liquid injector during the wire feeding process.

After the scale has been sufficiently removed from the wire rod, it is wound up by the winder 8.

Some of the experimental results conducted by the inventor regarding the present invention are as follows.

(1) Test wire diameter: 10 mm Steel type: 533C (2) Tensile force and twisting force of 10 mm were applied to the wire rod according to the method of the present invention, and the peeling status of scale relative to the total amount of strain (elastic strain + plastic strain) was investigated.

(3) Results As is clear from the above experimental results, according to the present invention,
Compared to conventional mechanical peeling methods, it is possible to remove scale extremely efficiently, and unlike the pickling method, it is possible to remove scale without causing any pollution problems.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing the overall configuration of an embodiment of the present invention, FIG. 2 a is a plan view showing details of the rotating body 3 in FIG. 2 is a side view showing the mechanical relationship between the cab stern 5 and the swing guide 6 in FIG. 1. FIG. W...Wire rod, 3,7...Rotating body, 5.
...Cab stern, 6...Swing guide.

Claims (1)

[Claims] 1. By simultaneously applying varying tensile force and twisting force to a predetermined section of the wire in the process of feeding the wire under a predetermined tension. A method for removing scale from a wire rod using tensile force and twisting force, the method comprising peeling off scale from the wire rod.