JPH0443323Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field of the Invention) The present invention relates to a marking device for marking defects such as scratches on a linear body.

(Technical background of the invention) If a cable is manufactured using a flawed aluminum conductor, problems such as the conductor breaking during cable installation will occur, and a cable with poor electrical characteristics will be obtained. For this reason, in the process of manufacturing an aluminum conductor by drawing aluminum rough wire with a wire drawing machine, markings are usually performed using a marking device at locations where flaws exist on the running aluminum conductor. That is, the conventional marking device includes a flaw detector that detects flaws in the aluminum conductor and a nozzle that sprays a coloring material onto the flaw positions detected by the flaw detector.

(Problems in the background art) However, in the configuration in which the coloring material is sprayed using a nozzle, the linear velocity of the aluminum conductor is, for example, 300 m/
When the amount exceeds min, the coloring material is sprayed to areas other than the location where the scratch exists, so it takes a lot of time to identify the scratch position after that. For this reason, the current nozzle type marking device cannot be used when manufacturing large-diameter aluminum conductors at a linear speed of 1000 m/min or more.

Also, when using a nozzle like this, the aluminum conductor may vibrate while running, so
The coloring material may not adhere to the area where the scratch exists.

(Purpose of the invention) An object of the invention is to provide a marking device that can reliably and accurately mark defects such as scratches even on a linear object traveling at high speed.

(Summary of the invention) This invention uses a detector to detect defects in a linear object that is running at high temperatures and high speeds, and uses a colored tape that is positioned near the linear object orthogonally to the running direction of the linear object. is pressed against the defective part by means of a pressing means activated by a detection signal from a detector, thereby adhering the coloring material of the tape.

(Embodiments of the invention) Hereinafter, embodiments of the invention will be described in detail with reference to the drawings.

FIG. 2 shows the manufacturing process of the aluminum conductor 1. That is, an aluminum rough wire 1' is supplied to the wire drawing machine 2, and this rough wire 1' is drawn to a predetermined outer diameter by the wire drawing machine 2 and is led out as the aluminum conductor 1. The aluminum conductor 1 is the marking device 10 of the present invention.
The film is taken up through a winder (not shown) and wound up by a winder (not shown).

The marking device 10 of the present invention includes a flaw detector 11, as shown in FIGS. 1 and 2. This flaw detector 11 includes a coil that generates an eddy current in the aluminum conductor 1 and a flaw detection coil that detects changes in the magnetic flux of this eddy current as a flaw, and outputs a detection signal S when a flaw in the aluminum conductor 1 is detected. A column 12 is arranged behind the flaw detector 11, and an L-shaped support member 13 is attached to the upper part of the column 12 so as to be movable in the vertical direction. A pressing means 1 is provided on the lower surface of the support member 13.
4 is installed. This pressing means 14 is a cylindrical yoke 1 directly fixed to the support member 13.
5, a magnet 16 fixed above within the yoke 15, a movable piece 17 mounted within the yoke 15 so as to be able to protrude in the vertical direction, and the movable piece 17.
The solenoid coil 18 is wound around the solenoid coil 18. A lead wire 19 is connected to the solenoid coil 18.
An excitation current supply circuit 20 is connected via. When the excitation current supply circuit 20 is supplied with the detection signal S from the flaw detector 11, it outputs an excitation current I to the solenoid coil 18. Therefore, this generates magnetic flux in the solenoid coil 18, so that the movable piece 17 is magnetized and protrudes downward against the magnetic force of the magnet 16.

A tape attachment part 21 is rotatably supported below the column 12, and a tape pad 2 made of colored polyester tape 22A is attached to this tape attachment part 21.
2 is loaded. Further, a tape positioning member 23 is fixed to the tape attachment portion 21. This tape positioning member 23 extends above the aluminum conductor 1, and is provided with a fixing base 23a at its tip. On the other hand, the colored polyester tape 22A forming the tape pad 22 is provided with a pigment layer 22a on one surface, as shown in FIG.
Then, this fed-out colored polyester tape 22A is attached to the support base 22 of the tape positioning member 23.
b, and its extended end is fixed to the fixing base 23a, whereby the aluminum conductor 1 is
The aluminum conductor 1 is positioned perpendicularly to the running direction of the aluminum conductor 1 while maintaining a spacing of mm.

Next, the operation of the marking device of the present invention will be explained.

That is, the flaws in the running aluminum conductor 1 are detected by the flaw detector 11.
When detected, the flaw detector 11 outputs a detection signal S to the excitation current supply circuit 20. The excitation current supply circuit 20 supplies an excitation current I to the solenoid coil 18 upon receiving the detection signal S, so that the movable piece 17 is magnetized and protrudes downward against the magnetic force of the magnet 16. Therefore, even if the aluminum conductor 1 vibrates during running, the colored polyester tape 22A is pressed against the flawed part of the aluminum conductor 1 by the movable piece 17.
2A pigment adheres. In this case, aluminum conductor 1 is
The vehicle is traveling at a high speed of 300m/min or more. on the other hand,
The colored polyester tape 22A is disposed perpendicular to the running direction, and the surface temperature of the aluminum conductor 1 is approximately 150° C. due to plastic deformation due to wire drawing.
Therefore, even if the aluminum conductor 1 is running at high speed, the tape 22A will instantly melt and break when pressed against the defective part.
Pigment adheres precisely to only the defective areas. Therefore, after the tape 22A is fused, the tape 22A is newly fed out and positioned as described above.

By the way, when pigment was attached to the defective part of the aluminum conductor 1 using the marking device 10 of the present invention,
Since the pigment was accurately attached only to the defective areas,
One defective part could be identified in about 2 to 3 minutes. In contrast, conventionally it took about 10 to 15 minutes to identify one defective part.

When manufacturing the aluminum conductor 1 at a linear speed of 1000 m/min, for example, the support material 13 is moved downward and attached to the pillar 12, and after detecting a flaw, the movable piece 17 presses the colored polyester tape 22A. What is necessary is to shorten the time interval between the steps, and thereby the pigment can be accurately attached to the defective portion even when the linear velocity of the aluminum conductor 1 is high.

Another embodiment of the invention is shown in FIG. That is, in this embodiment, the take-up reel 24 is attached to the tape positioning member 23 at the position where the fixing base 23a was provided. On the other hand, a tape pad 25 made of a metallic colored tape 25A having a pigment layer on one side is loaded in the tape attachment part 21, and the feeding end of the colored tape 25A is perpendicular to the running direction of the aluminum conductor 1. It is fixed to the take-up reel 24.
The take-up reel 24 is rotated by a motor 26, and the motor 26 is connected to a drive circuit 27 including a timer.
Driven by. When the detection signal S is input to the drive circuit 27, the motor 2 is activated after the time set by the timer has elapsed.
Drive 6. Therefore, after the colored tape 25A is pressed against the defective part of the aluminum conductor 1 by the movable piece 17, the take-up reel 24 is rotationally driven by the motor 26, so that the colored tape 25A is perpendicular to the running direction of the aluminum conductor 1. It can be automatically extended and positioned at a predetermined position.

In the embodiment described above, the pressing means 14 may be constituted by a solenoid valve that is activated by the input of the detection signal A and a cylinder whose piston is protruded by the operation of the solenoid valve, or a linear motor may be used. Alternatively, a tape mixed with an inorganic coloring material such as a pigment may be used as the colored tape.

The marking device of the present invention can also be used to mark the location of a flaw in a copper wire or other linear body, or to mark a defective part other than a flaw, and can be used to detect a defective part other than a flaw. In such cases, corresponding detectors may be combined.

(Effects of the invention) According to the invention, a defective part of a running linear body is detected by a detector, and a pressing means is operated based on a detection signal from the detector to move a colored tape in the running direction of the linear body. By pressing the coloring material onto the defective part in a state perpendicular to the linear body, even when the linear velocity of the linear body is high or the linear body is vibrating, the coloring agent can be applied to the defective part accurately and on the linear body. can be attached. Therefore, the position of the defective portion can be identified reliably and in a short time, making it possible to simplify the identification work and provide cables and the like with excellent quality.

[Brief explanation of the drawing]

Figure 1 is an overall configuration diagram of the marking device according to the present invention, Figure 2 is a diagram schematically showing the wire drawing process of an aluminum conductor, Figure 3 is a perspective view of a colored polyethylene tape, and Figure 4 is a diagram of the present invention. FIG. 2 is an overall configuration diagram according to another embodiment of the present invention. 1... Aluminum conductor, 11... Flaw detector, 14...
Pressing means, 17...Movable piece, 18...Solenoid coil, 20...Exciting current supply circuit, 21...Tape mounting portion, 22A...Colored polyester tape, 23...Tape positioning member, 24...Take-up reel , 25A...Metal colored tape.

Claims (1)

[Claims for Utility Model Registration] 1. A marking device for marking defective parts of a linear body running at high temperature and high speed, comprising: a detector for detecting a defective part of the linear body running at high speed; a colored tape positioned perpendicular to the running direction of the linear body near the linear body; and pressure to press the tape to adhere the coloring material to the defective portion of the linear body based on a detection signal from the detector; 1. A marking device for a linear body, comprising: means. 2. The linear object marking device according to claim 1, wherein the detector is a flaw detector that detects flaws in the linear object. 3. The pressing means includes a solenoid coil to which an excitation current is supplied in response to the input of the detection signal, and a movable piece that is magnetized by the solenoid coil and protrudes to press the tape against the defective portion. A marking device for a linear body according to claim 1 of the patent registration claim.