JPS58135929A - Detector for abnormal tension upon running wire - Google Patents

Abstract

PURPOSE:To rapidly and reliably detect an abnormal tension of a running wire, by a method wherein a detector for detecting an abnormal change is mounted to arm levers, crossing an axis of a rotary shaft at right angles and emerging in an approximately reverse direction to each other from a peripheral surface of the rotary shaft rotatably mounted to a fixed part. CONSTITUTION:If the tension upon a running wire increases extroadinarily, a strong tensile force is applied in the running direction of the wire 3, and if a resistance by a tension is broken by the force, a guide roller 4 detects a displacement at shown in a chain line through the working of the detector of a limit switch. A rotary shaft 7 is pivotally supported to boss parts 7a and 7b for supporting a fixed bracket 12, a collar part 13 covers and is secured to the outer periphery of the rotary shaft 7, and the two parts are adapted to rotate monolithically. A first arm lever 5a and a second arm lever 5b, crossing the axis of the rotary shaft 7 at right angles and extending approximately in a reverse direction to each other, are monolithically attached to the peripheral surface of the collar part 13, a guide roller 4 is rotatably and loosely supported to the tip of the arm lever 5a, and a joint member 9, being linked to a working lever 8a of an energizing device 8, is installed to the arm lever 5b. A striker 11 is attached to a rear end side 7' of the rotary shaft 7 to detect an abnormal displacement of the guide roller 4 and the arm levers 5a and 5b.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus 1 for detecting an abnormality in a diamond traveling in the axial direction and being processed.

Metal wire is subjected to several elongation processes during the manufacturing stage, but even after it has been finished to a certain diameter, it may undergo elongation or other processes such as pickling and other treatments depending on its intended use. A skin bath and even plating treatment may be applied. In performing these various treatments, we aim to reduce the processing cost of the wire and further improve the quality.
The method of carrying out the above-mentioned treatment continuously while running the wire rod in a fine direction is becoming mainstream. In such a continuous processing process, the wire is run at high speed in the axial direction, so the running wire in each processing section as well as between the processing sections maintains straightness as much as possible. It is necessary to apply a constant tension VM, and if there is a difference in the passing speed of each processing section, it is necessary to apply a constant tension VM. Various measures have been taken to prevent this. In other words, Ten V has a smooth running performance! It is desirable to keep p constant as much as possible;
An abnormal increase in WIN not only causes the wire to break, but also overloads the equipment l- in each processing section, causing the equipment W111/I
There is the problem of shortening the life of the tensioner, and the abnormal reduction in the tensile strength leads to wavy running of the fastening material, which reduces the treatment effect and degrades quality. It is necessary to know about occurrences as soon as possible and to deal with them immediately, but as described below, none of the conventional methods has been fully satisfactory, with each having its own merits and demerits.For example, @Figure 1 shows dancer row 91 with abnormal ten V
When the tension of the wire 8 increases, the movable V-p2 goes up, and when the tension Vyan decreases by 1, the movable shib lowers. There is something that can be detected by the Mitsu F switch. Although not shown, there is a method of mechanically detecting changes in load due to an abnormality in the tensioner by providing a wire take-up motor thermal relay, a limiter, etc.

Comparing the advantages and disadvantages of these anomaly detection methods, the first
It has traditionally been performed on the yuzu shown in the first m.
Since each method Ifi had advantages and disadvantages, it was decided to use DI for detecting abnormalities in the tensile system! There is a desire to develop an abnormality detection attachment that satisfies all four requirements: flexibility, adaptability to large-diameter wires, speed of recovery, cost, and ease of operation.

The present invention was made with attention to the above circumstances.
Therefore, if an abnormality occurs in the tension of the running wire,
In addition to being able to detect this quickly and reliably,
We would like to provide an abnormality tension detection device that can sufficiently cope with changes in the wire diameter, and that can happily return to steady state embroidery after the tension tension abnormality has been resolved, and that the device cost is low. 4.

That is, the present invention moves the first arm lever and the second arm lever from the perspective of the rotating shaft rotatably provided with respect to the fixed part to the direction perpendicular to the axis of the rotating shaft and substantially opposite to each other. A guide roller for changing the running direction of the wire is attached to the @1 arm shuttle, and the second arm lever moves the second arm in the same direction as the wire running direction after the direction is changed by the guide row 9. Connected to the biasing device that biases the rod, I! The gist is that a detection device is provided for detecting abnormal displacement of any one of the guide roller, the first arm rod, and the gJN rod.

The configuration and effects of the present invention will be briefly described below based on the aspect (2) showing the VI Examples, but the following Examples are only to show one specific example, and the general public will be Both of these molds fall within the technical scope of the present invention.

Figure @2 is a basic explanatory diagram of the operation of the abnormal tension V wear detection device according to the present invention, in which the running route of the wire 80 running along the arrow direction is slightly changed and the wire 80 is passed through the present invention M[. , and is configured to detect an abnormality in the tension of the wire 8. J! 1. A guide roller 4 is supported swingably around an arbitrary point as a fulcrum, and a guide roller 4 is freely supported on a large arm rod 6, and the wire 8ij whose running direction has been changed is hung on the guide roller 4 by a fixed rod for changing the direction. Although the guide roller 4 continues to travel in a predetermined direction, the guide roller 4 is subjected to an urging force in a direction that resists the tensile force of the wire 8, that is, in the direction of the arrow A. This biasing force is adjusted so that the guide row 94 maintains the position shown by the solid line when the tension of the wire 8 is at a normal value.

If the tension of the running wire increases abnormally in this state 11, a strong tensile force acts on the running direction of the wire 80, and when this force breaks the above-mentioned resistance,
The guide row 94 is displaced as shown by the chain line. This displacement is detected by a detection device such as a limit switch, a proximity switch, or a phototube. If the tension tension VH becomes abnormally weak, the guide roller 4 will tilt toward the cape in the direction of arrow A due to the above-mentioned biasing force, so it is sufficient to similarly detect this using an appropriate detection device. Abnormal Back Ten V”
Specific examples of crucian carp detection devices include the devices shown in FIG. 8 (front view) and FIG. 4 (left axis view of FIG. 8). It is configured to detect an abnormal increase in tension. That is, according to the illustrated abnormal tension VH detection device, the supporting boss portion 7m of the fixing bracket 12.

The rotary shaft 7 is held movably around the rotary shaft 7b, and a collar part 18 is inserted and fixed to the outer M4 of the rotary shaft 70 so that both can rotate integrally.

Then, a first arm lever 5a and a second arm lever 6b are integrally attached to the shoulder surface of the collar part 1a, and the first arm lever 5a and the second arm lever 6b are integrally attached to the shoulder surface of the collar part 1a, and are perpendicular to the axis of the rotating shaft 7 and extend in substantially opposite directions. armrest 5
A guide row 94 is rotatably supported at the distal end of the second arm lever 6bK, and a V-shaped in-F member 9 is provided to be connected to an operating punch 8& of a biasing device f8, which will be described later. The biasing device 8 is exemplified as a resilient pulling actuating device such as a hydraulic pressure spring or an air pressure spring, but it may be replaced with a tension spring having an appropriate tension. Also, in the figure, the wire is taken in the direction of wire travel (in the direction of the arrow) after the direction is changed by guide row "74.
However, if you want to install it on the opposite side, you can either reverse the direction of action of the air cylinder, etc., or use a push spring instead. In short, it is sufficient that it acts to pull the second arm lever 5b toward the direction of arrow A, and as a result, the first arm lever 5& is tilted in the direction opposite to arrow A using the rotating wheel 7 as a fulcrum. energized.

Therefore, the wire aFi running in the direction of the arrow through the guide roller 4 is urged in the direction opposite to the arrow A by the urging force of the urging device WI8 transmitted through the first and @2 arm rods 5m and 5b. However, the biasing force at this time needs to be adjusted so that the through tension V1iMn and tl of the running wire 8 are equal, and by this adjustment, each arm rod maintains its optimal posture (approximately vertical posture in Figure C). And set the guide row '94 to the optimum position al.
1 (solid line position in FIG. 8), and as a result the tension of the running wire is maintained. Also, the rear side a of the fixing bracket 12 (left a in Figure 84)
A limit switch 10 is attached to the guide roller 4, and a sliker 11 is provided on the rear end side (left side in FIG. 4) 7' of the rotating shaft 7. @1 arm stick im and I! It is configured to detect the position of the two-armed rod 5b as described below. t#J11: The stopper prevents the guide roller 4 from tilting to the right (clockwise in the drawing) from its normal position.

FIG. 5.6 is an explanatory diagram showing the operating status of the limit switch IO and slider 11, and is a view of FIG. 4 has been removed, and only the detection attachment part placed on the back side is shown. First of all, when the Tsuya is running under a normal tensile strength, the first arm lever 5ai maintains an almost vertical posture as shown in FIG.
The sliker 11 and the limit switch 10/fi, which are installed at a slight incline, are kept in a non-heated state and are not in detection operation. Ten V in this dog! abnormally increased,
When Tenshi Kann overwhelms Kamiayu's power.

The guide roller 'ju'i is displaced as shown by the broken line in FIG.
When the position is f, the striker 11 attached to the rotating shaft 7 moves to v.
As shown in Fig. gB, it is rotated and displaced in the direction of arrow B, and in the process, the plunger 10a of the limit switch IO is pushed in, and an abnormality in the balance VWIN is detected. Immediately when an abnormality is detected in the ten vman, the series of processing equipment is temporarily stopped, or in some cases, the cause of the abnormality is inspected and canceled, and operation is restarted or Fi continues to return to normal operation.

At this time, the guide roller 4it is automatically and quickly returned to its original position by the biasing force from the biasing device 8, so that the setup time υ until normal operation resumes does not become long. Although the detection means is designed to detect the rotation of the IIi rotation shaft 7, it is also possible to design it to directly detect the displacement of each arm rod or guide roller, and this is not included in the present invention. It will be done.

Since the abnormal tension detection device* of the present invention is configured in this manner, abnormal tension detection can be performed extremely quickly. Therefore, it is possible to discover the cause of a ten VH abnormality and take measures such as resolving it with bare hands (handling), thereby preventing trouble. Also, it is possible to restore normal operation 4 times faster (and to shorten the time required to stop operation in a % increase process). Furthermore, since the mechanism is pivoted on the rotation axis and rotates the wire around the companion guide row 9, it can be used regardless of the wire diameter, and the detection operation is extremely smooth, making it highly reliable in detecting abnormalities and Since the mechanism is simple, it can be provided at a low cost, and other effects can be obtained.

[Brief explanation of the drawing]

@Figure 1 is an explanatory diagram of the conventional DVM abnormality detection means, Figure 2
The figure is an explanatory diagram showing the basics of ten filter abnormality detection according to the present invention, Figure S is a front view specifically showing the Vi pupil applied to the present invention, and Figure 4 is a left side view of Figure S. , @6 , Figure 6 is an explanatory diagram of a detection device that is attached to the back portion of the device shown in FIG. 8. 1...Dancer roller attachment 2...Movable sheep 8...Wire 4...Guide roller 6--Arm rod 6...P-ra 7...Rotating shaft 8...Biasing Device

Claims (1)

[Claims] (1) A device for detecting the normal tension I/M of a wire traveling in the axial direction, which detects the axis of the rotating wheel from the shoulder surface of the rotating wheel, which is rotatably provided with respect to the fixed part. The first arm rod and the second arm rod are made to protrude in directions that are perpendicular to each other and substantially opposite to each other,
A guide roller for changing the running direction of the wire is attached to the first arm rod, and the second arm rod is configured to move the second arm rod in the same direction as the wire running direction after the direction conversion by Idara. Connected to a biasing device to bias, and a guide roller on the foot, @
A running wire abnormality detection device comprising a detection device for detecting abnormal displacement of either one of the first arm rod and the second arm rod O.