JPH0259115A - Inductive wiring method for special shaped wire - Google Patents

Abstract

PURPOSE:To improve product quality and to reduce is cost by providing a twisting apparatus capable of traveling on the inlet side of a winding machine, giving a reverse twisting to the special shaped wire in the reverse direction to the twisting rotation generated in the special-shaped wire in the laying head. CONSTITUTION:A twisting device 5 is provided on the inlet side of the laying type winding machine 1, pressurizing free rollers 11 and an actuator 12 as the wire grasping means are disposed respectively. When the special-shaped wire A is carryed in inductively from finish rollers 7, each roller 3, 4, 11 interposes the wire A to grasp. At this case, a driving device 13 is started to rotate a rotating body 10 together with the pressurizing rollers 11 and to give the equal twist value in the reversal direction in the laying head to the wire A. By this method, in the laying head, the twists in the right and left directions are negated each other, the wire is wound in the state free from the twist. Therefore, the product quality is improved and its cost is reduced by mass-producing.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is for winding a deformed wire rod such as a threaded rolled steel bar that has passed through the final roll of a rolling equipment into a product without twisting using a laying winder. The present invention relates to an induction winding method for winding.

(Conventional technology) Irregularly shaped wire rods such as ridged rolled steel bars, which are often used as building materials, have high strength and low cost, as well as uniformity in shape and straightness without tearing. Sex is required.

On the other hand, after rolling, this type of wire rod is required to be rewound to a state where it can be easily handled for transportation, storage, etc. The conventional winding methods adopted to meet this latter requirement are two: a gullet-type winding method that directly winds the wire coming from the rolling equipment into a wire bundle; and one that continuously winds the wire introduced into the winding machine. The two most common winding methods are the laying type winding method, in which the material is wound in a spiral manner while being sequentially unloaded from the preceding winding section.

(Problems to be Solved by the Invention) Although the garlet type winding allows the wire to be wound without twisting, since it is directly wound into a wire bundle, controlled cooling immediately after winding becomes a problem. That is, If it is left in a rolled state, uniform controlled cooling over the entire length cannot be achieved, resulting in variations in strength.

Furthermore, as a countermeasure to this, if the wire bundle is once rewound and the heat treatment is performed again, the equipment, number of man-hours, and working time will increase, leading to an increase in manufacturing costs.

On the other hand, with laying type winding, high strength can be ensured through controlled cooling such as direct battenting, but the rolled wire guided into the winding machine rotates around the axis in the laying head and forms a spiral. Since the wire is inevitably twisted during the forming process, the twist remains even after the wire is collected by a focusing device and unwound in the tangential direction of the wire bundle and stretched again.This is a drawback that cannot be ignored for construction materials. This method was not suitable for winding a threaded steel bar after rolling, such as the one shown in FIG. 5, in which straightness is particularly important.

In addition, for relatively large diameter wire rods, they are rolled into regular length bars.
Depending on the required strength, a method of applying heat treatment again is also used, but this method is limited in use depending on the wire diameter and is inferior in terms of cost and handling.

Therefore, the present invention aims to provide an induction winding method that can eliminate the problem of tearing of the wire while taking advantage of the advantages of the laying winding method.

[Means to solve the problem]

In order to solve the above-mentioned problems, the present invention provides a twisting device on the inlet side of a laying type winder, and the wire is guided to the winder by passing through the final roll of the rolling equipment using a twisting device of the device. The irregularly shaped wire is gripped so that it can run, and under this condition, the gripping means is rotated around the pass line of the wire in a direction opposite to the twisting rotation of the irregularly shaped wire that occurs in the laying head at a speed equal to the twisting speed. The deformed wire was given a reverse twist in advance.

[Effect]

When the wire gripping means is rotated at the same speed as the twisting speed generated by loop winding, the lead angles of the twisting forcefully applied by the twisting device and the twisting naturally occurring within the laying head are naturally equal.

However, the direction of the forced twist and the natural twist are exactly opposite, so both twists cancel each other out, and the cross-sectional orientation of the wire rod after winding becomes the same direction at each part in the longitudinal direction. This means that there is no tearing, and when the wire is unwound in the tangential direction, no tearing occurs in the wire.

[Example] FIG. 1 shows an example of an apparatus used to carry out the method of the present invention.

1 in the figure is a laying type winding machine equipped with a guide pipe 2, 3 is a pair of spiral pinch rollers that intersect diagonally at an angle as shown in FIG. 2, and 4 is a pair of rollers as shown in FIG. 3. Ordinary pinch rollers arranged in parallel as shown in
5 is a twisting device for applying reverse twist to the wire rod A, 6 is a coil conveyor conhair, 7 is a final roll of the rolling equipment, 8 is a guide pipe, and 9 is a water cooling device for removing excess heat from the wire rod after rolling.

The twisting device 5 includes a rotating body 10 having a wire passage hole in the center of rotation, and a wire gripping unit in which a plurality of pairs (two in the figure) are attached to the rotating body 10 so as to be openable and closable (radially movable). The pressure free roller 11 as a means and the opening/closing mechanism in 10 (
The actuator 12 includes an actuator 12 (not shown) that opens and closes 11, and a drive device 13 that drives 10 including this actuator at variable rotational speeds.

Although the pinch roller 3.4 is not an essential element, in the laying type winding, the wire material A is
If the wire buckles, it becomes impossible to guide the wire, so in order to prevent such a situation, the minimum number of 3.4 rollers is provided.

In the apparatus configured as described above, the wire rod A that has been rolled and formed into a predetermined size and cross-sectional shape by seven final finishing rolls is guided to the winder 1. At the beginning of this guidance, the rollers 3.4.11 are in an open state, but when the tip of the wire passes, each roller is operated in a downward motion to sandwich the wire between them. Then, when the wire rod has been clamped by the rollers 3, the drive device 1
3 is activated.

When the rotating body 10 starts rotating with the activation of step 13, the wire A becomes
Because the pressure free roller 11 grips as shown in FIG. 4, relative rotation with the rotary body 10 is disabled.
It rotates and twists with a constant lead angle. At this time, let us assume that the direction of the pattern seen from the rear of the direction of travel is a clockwise rotation.

13, the wire A enters the guide pipe 2 of the winder 1, and is formed into a coil shape as it passes through the pipe 2, whose radius of curvature gradually decreases toward the exit. It will be done. The coiling direction at this time is the direction in which the tip of the wire advances clockwise toward the exit of the pipe 2, and the coiling causes the wire A to
A counterclockwise twist with a lead angle of 360° (one rotation) occurs per turn. Therefore, if the speed at which the torsion device 5 applies the twist in the right direction in advance is controlled to be equal to the speed at which the twist occurs in the left direction in the laying head (inside the pipe 2), the twist in the opposite direction can be completely eliminated. This is offset by the amount of twist in the wire after winding.

After that, the wire passed through the pipe 2 and formed into a coil falls onto the conhair 6, and the contact between the coils is avoided as much as possible, that is, as shown in the figure, part of the coil is gradually Transferred in an overlapping state. Therefore, it is possible to uniformly heat and cool the material by passing it through a heating furnace and a cooling tank while it is being transported before converging, and it eliminates the need for unwinding and rewinding, which is essential in the gullet method, for uniform heat treatment. do not.

Note that there is no problem in the pinch roller 4 part because the wire rod slips and rotates as the twisting device 5 applies reverse twist in advance. If it is included, tears will occur in the wire from the roll to the twisting device 5. However, this problem can be solved by rotating rolling rolls that do not allow slip rotation in synchronization with the rotating body 10 in the same direction.

〔effect〕

As described above, the method of the present invention applies reverse twist to the wire before it enters the laying head to absorb and offset the twist that inevitably occurs within the laying head.
! Direct and uniform heat treatment is possible by taking advantage of the features of winding without unwinding and laying winding. Therefore, even with irregularly shaped wire rods such as threaded steel bars, there is no twisting immediately after unwinding and stretching, and mechanical It has the effect of being able to manufacture high-strength, uniform wires over the entire length at high speed and with good mass productivity without being limited by wire diameter, contributing to improved product quality and cost reduction through mass production.

[Brief explanation of the drawing]

Fig. 1 is a side view showing an example of a device used to carry out the present invention, Fig. 2 is a front view of a spiceless pinch roller, Fig. 3 is a front view of a parallel pinch roller, and Fig. 4 is a front view of a pressure free roller. The front view and FIG. 5 are perspective views showing a threaded steel bar as an example of a deformed wire rod. 1... Laying type winder, 2... Guidance pipe, 3.4... Pinch roller, 5... (Returning device, 6.
... Conhair, 7 ... Final rolling roll,
8...Guide pipe, S...Water cooling device, 10...Rotating body, 11...
Pressure free roller, 12... actuator, 13... rotary drive device, A... wire rod. Figure 4 Figure 5

Claims (1)

[Claims] (1) A method for winding up a deformed wire rod that has passed through the final roll of a rolling equipment using a laying type winder, in which a twisting device is provided on the entrance side of the winder to guide the deformed wire rod to the winder. Under this condition, the wire gripping means of the twisting device is rotated at the same speed as the twisting speed in the direction opposite to the twisting rotation of the deformed wire that occurs in the laying head, centered on the pass line of the wire. 1. A method for induction winding of a deformed wire, characterized in that the deformed wire is given a reverse twist in advance by twisting the deformed wire.