JPH046459B2 - - Google Patents

Description

[Detailed description of the invention]

[Industrial Application Field] The present invention relates to a bend straightening device for a magnetic steel wire, and more particularly to a bend straightening device for automatically straightening the bend in a steel core wire of a coated welding rod. [Prior Art and Problems] Steel wires, for example, core wires of coated welding rods, are required to have no bends, that is, to have good straightness. If the core wire is bent, wire clogging will occur during the coating process, making it impossible to paint.Also, even if the core wire can be painted, the core wire will not be located in the center of the coating material, resulting in an eccentric state, resulting in poor weldability and poor quality. It becomes a coated welding rod. Figure 1a (excluding the detection end 23 of the position detection device)
To explain the prior art with reference to , conventional bend straightening involves transporting a steel wire 24 in its axial direction z and passing through a bend straightening device consisting of straightening roller units 22 and 21 in x and y directions perpendicular to each other. The material is then cut into a predetermined length using a cutting machine and pooled in a hopper. Then, a predetermined amount of core wire is extracted from the hopper and mechanically or visually inspected for bending. If bending of the core wire is confirmed, the necessary wire transfer is temporarily stopped. The system involved stopping the machine and having the operator manually adjust the correction rollers. Such conventional techniques have the following problems. (1) Since the cable bending test is not performed constantly but periodically, it is not possible to prevent bending from occurring between the time the cable bends and the test is carried out.
Yield is low. (2) Adjustment of the straightening roller is carried out by temporarily stopping the transfer of the steel wire, so the operating rate of the straightening device is low and the production amount of welding rods is low. (3) Adjustment of the straightening rollers requires skill, and even an experienced person must know which straightening rollers (rollers in the x direction and rollers in the y direction) should be moved in which direction, since the core wire itself has been cut and separated from the steel wire. (+x, -x
It is difficult to determine whether the adjustment should be made in the direction (or in the +y or -y direction). [Means and effects for solving the problems] The present invention aims to solve the problems of the above-mentioned prior art. In order to achieve this purpose, in the present invention,
The system automatically detects bending of the steel wire and automatically adjusts the rollers of the straightening device. In other words, the steel wire rod is transferred in its axial direction (z direction), and the x
In a device that straightens the bend of a wire by passing it through a straightening roller unit in the x-direction and y-direction:
A predetermined roller of the correcting roller unit is supported on each unit base movably in the x direction and the y direction;
The direction support member and the y direction support member are respectively x
It is connected to the direction drive system and the y direction drive system; the detection ends of the x and y two-dimensional magnetic body position detection devices are arranged in parallel to the x and y direction correction roller units; x and y2.
x from the electrical processing device of the dimensional magnetic body position detection device
The position detection amount and the y position detection amount are given to the drive system control device to bias it in the direction in which the deviation in the x direction and the y direction becomes zero. Next, the present invention will be explained in detail using the drawings.
FIG. 1a shows an overall view of an embodiment of the present invention, and FIG. 1b shows a sectional view taken along the line B--B. In the drawing, 24 is a steel wire rod to be straightened. 20 is a straightening roller device that straightens the steel wire 24 while transporting it in its axial direction (z direction). The correction roller device 20 has a correction roller unit 21 in the y direction and a correction roller unit 21 in the x direction.
The steel wire 24, which is transferred from left to right in the drawing, is passed through the y-direction correction roller unit 21 and the x-direction correction roller unit 22 in order to correct the bending of the steel wire 24. do. FIG. 2 shows an enlarged view of the y-direction correction roller unit 21 shown in FIG. 1a. Referring to Figure 2,
To explain the adjustment method of the correction roller for correcting the bending of the wire rod 24, the correction roller unit 21 is
Fifteen rollers are arranged in a staggered manner, and the steel wire rod 24 is held and pressed by the roller group to correct the bending of the wire in the y direction.The roller group is roughly divided into the following five groups. There is. That is,

[a group] rollers 1, 2 Part where the wire is introduced (fixed)

[Group B] Rollers 2, 3, 4, 5, 6 Parts that remove irregular bends in the y direction that the wire itself already has and add a certain bend to the wire (movable)

[C group] Rollers 6, 7, 8, 9, 10 Part that removes the bending deformation imparted to the wire by group b and gives approximately straightness to the wire (fixed)

[Group d] Rollers 10, 11, 12, 13, 14 A part (movable) that actively imparts a small bend in the y direction to the wire rod that has been given approximately straightness by group c

〔Effect of the invention〕

As described in detail above, the present invention detects the bending of the steel wire by the detection end of the magnetic body position detection device disposed immediately after the straightening roller device, feeds this back to the roller support member of the straightening roller device, and then It automatically adjusts the position, and can eliminate all the problems caused by conventional manual work.

[Brief explanation of drawings]

FIG. 1a is a side view showing an outline of a mechanism section according to an embodiment of the present invention, and a part thereof is shown in cross section. FIG. 1b is a sectional view taken along the line B-B in FIG. 1a, and FIG. 2 is a side view showing the arrangement of the rollers of the correction roller unit 21.
FIG. 3 is a front view showing the roller support member, and a portion thereof shows a cross section. Figure 4 shows the magnetic body position detection device 23.
A block diagram showing the configuration of the electrical processing device and drive system control device, Figure 5 shows the microcomputer.
Figure 6 is a flowchart showing the operation of the MPU.
It is a time chart showing an overview of control inputs A to C input to the MPU and control operations of the MPU. 20: correction roller device, 21, 22: y direction,
x-direction correction roller unit, 23: x, y detection end of two-dimensional magnetic body position detection device, Ly, Lx: y, x
linear motor.

Claims (1)

[Claims] 1. A straightening roller device for straightening the bends in the transported steel wire, which comprises a means for transporting the steel wire in its axial direction z, and other straightening roller units in the x and y directions perpendicular to each other. In an apparatus for straightening the bending of a wire rod, the apparatus comprises: a predetermined roller of a straightening roller unit in the x direction and the y direction is movably supported in each unit base via a support member in the x direction and the y direction; The y-direction support members are connected to the x-direction drive system and the y-direction drive system, respectively;
yThe detection ends of the two-dimensional magnetic body position detection device are arranged in parallel;
The x position detection amount and y position detection amount from the electric processing device of the x, y two-dimensional magnetic body position detection device are given to the drive system control device to control the x direction drive system and the y direction drive system so that deviations in the x direction and y direction are detected. A device for straightening the bending of a steel wire, characterized in that it is configured to bias in the direction of zero.