JPH04118215U - Coil inner diameter abnormality detection device - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a coil inner diameter abnormality detection device that can detect an abnormality in the inner diameter of a coil without being affected by external disturbances. [Configuration] Inside the cover 7 at the upper end of the boom 9 on the left side of the figure,
A disk 3 and a pulley 14 are mounted on a rotary shaft 4 via a bearing block 8, and two laser emitters 1 are mounted on the outer circumference of the disk 3. On the other hand, the disc 3 and pulley 1 are also inside the cover 7 at the upper end of the boom 9 on the right side of the figure.
4 is mounted via a rotating shaft 4 and a bearing block 8, and two laser receivers 2 are mounted on the outer circumference of the disk 3 so that they have the same diameter and rotate at the same angle as the laser emitter 1. It is installed.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

In this invention, the inner diameter of the metal strip coil is The present invention relates to a coil inner diameter abnormality detection device for detecting an abnormality.

0002

[Conventional technology]

At rolling mills, etc., metal strip coils ( (hereinafter abbreviated as a coil) has an inner end that protrudes inward, or If the winding becomes loose and the inner diameter becomes smaller, a so-called inner diameter abnormality may occur. There are times when I am. When such a coil is inserted into the mandrel of an unwinding machine, the internal The area with the abnormal diameter comes into contact with the mandrel, causing the side surface of the coil to deform into a bamboo shoot shape. Therefore, Detects the condition of the inner diameter of the coil just before inserting it into the mandrel, and detects if there is an abnormality in the inner diameter. The coils are being removed.

0003 Fig. 3 shows an example of a conventional coil inner diameter abnormality detection device in plan view, and Fig. 4 shows an example of a conventional coil inner diameter abnormality detection device. This is shown in a side view. In the illustrated example of the coil inner diameter abnormality detection device, first, the coil inner diameter abnormality detection device is The frame 021, which is shaped like a letter, is swung by a hydraulic cylinder 019. The axis of the rotating shaft 04, which is attached to the tip of the arm 021a on the front side of the coil car 0, is 30 to coincide with the axis of the coil C conveyed by the coil C. Next, frame 02 A projector 01, such as an eye lamp, attached to the tip of the other arm 021b of 1 At the same time, the light is emitted from the coil C onto the inner diameter of the coil C, and the lamp is Slide the hook 015 on the guide 016, and connect the pinion 014, rotation shaft 04, and arm. 03 and camera 02.

0004 The camera 02 receives the light passing through the inner diameter of the coil C while rotating. The monitor detects the shape and dimensions of the inner diameter of coil C and detects an abnormality. Determine the presence or absence of. If the inner diameter of coil C is normal, lift frame 021 up. The coil C is swung toward the unwinding machine (not shown) by the coil car 030. Insert into the drill. On the other hand, coil C whose inner diameter was determined to be abnormal is not shown. Removed off line by crane.

[0005]

[Problem that the idea aims to solve]

By the way, the conventional coil inner diameter abnormality detection device described above has the following problems. In other words, an expensive camera 02 is required for light reception, and the camera 02 is not used for indoor lighting. The accuracy of abnormality detection decreases because it also receives light from outside and inside the coil. Diameter abnormalities may be overlooked. The present invention was developed in view of the above situation, and is designed to prevent abnormalities in the inner diameter of the coil from being affected by external disturbances. An object of the present invention is to provide a coil inner diameter abnormality detection device that can be used without any trouble.

[0006]

[Means to solve the problem]

Therefore, in this invention, the inner diameter of the metal strip coil inserted into the mandrel of the unwinding machine is different. In a coil inner diameter abnormality detection device that detects abnormalities, the coil rotates along the inner diameter of the coil. A laser emitter that rotates at the same angle as the laser emitter, and a laser that has the same diameter and rotates at the same angle as the laser emitter. The laser receiver, the laser emitter, and the laser receiver are interlocked and rotated. The invention also includes a driving means for controlling the movement of the motor.

[0007]

[Effect]

Before inserting the coil into the mandrel of the unwinding machine, remove the laser emitter and laser receiver. The axis of the coil is the axis of the rotation locus of the laser emitter and laser receiver. Set the drive hand so that it matches the The stage rotates the laser emitter and the laser receiver. Plate ends within the inner diameter of the coil If there is a protrusion or a decrease in the inner diameter, the laser should not be The beam is interrupted, and the inner diameter abnormality is detected by the receiver.

[0008]

【Example】

Hereinafter, one embodiment of the present invention will be described in detail based on the drawings. Figure 1 shows a side view of the coil inner diameter abnormality detection device according to the present invention with the main parts cut away. 2 shows a cross-sectional view taken along line AA in FIG. In these figures, 9 is a boom placed on the left and right sides of the coil C, and the hollow shaft They are connected to each other by 10. The hollow shaft 10 has left and right bearing blocks 11 It is pivotally connected to the respective bases 21 and 22 via. At the top of both booms 9 A cover 7 is fixedly provided with a see-through hole 7a, and a photo is placed on the top and bottom of this cover 7. A switch 6 is attached to each. Inside the cover 7 at the upper end of the boom 9 on the left in Figure 2 , the disc 3 and pulley 14 are attached via the rotating shaft 4 and the bearing block 8. Two laser emitters 1 are attached to the outer periphery of the disk 3. on the other hand, The disc 3 and pulley 14 also rotate inside the cover 7 at the upper end of the boom 9 on the right side in Figure 2. The disk 3 is attached to the shaft via the shaft 4 and the bearing block 8, but there are two The laser receiver 2 is installed so that it has the same diameter and rotates at the same angle as the laser emitter 1. It is worn.

[0009] A rotary shaft 12 penetrates inside the hollow shaft 10, and the position of both bearing blocks 11 is and is supported on a hollow shaft 10. A relatively large diameter pulley 15 is attached to the left end of the rotating shaft. and a lever 16 are fitted, and only the pulley 15 is fitted to the right end. still, These pulleys 15 are connected to the pulley 14 at the upper end of the boom 9 and the timing belt 13. are connected. Further, the lever 16 is connected to the base 21 via a hydraulic cylinder 17. connected. In the figure, 30 is the coil car, and 40 is the mandrel of the winding machine. It is. 18 is a lever that is integrated with the hollow shaft 10, and 19 is a lever that controls the lever 18. It is a hydraulic cylinder that swings.

0010 The operation of this embodiment will be described below. In the coil inner diameter abnormality detection device of this embodiment, first, the coil C is connected to the coil car 30. It is transported from the stockyard. Next, the axis of the coil C is aligned with the mandrel 40. The lever 18 and boom 9 are aligned with the axis of the hollow shaft 10, and the lever 18 and boom 9 are connected to The axial center of the rotary shaft 4 is made to coincide with the axial center of the coil C by swinging by the rotor 19. So Then, the lever 16, pulley 15, and timing belt 13 are operated by the hydraulic cylinder 17. , the left and right laser emitters 1 and the laser are connected via the pulley 14, rotating shaft 4, and disk 3. Rotate the photodetector 2 so that it is at the position of the see-through hole 7a, and then turn the left and right photoswitches 6 The laser emitter 1 and laser receiver 2 can be confirmed through the see-through hole 7a. The positions are set in the vertical direction, respectively.

[0011] Next, a laser beam is irradiated from each laser emitter 1 toward a laser receiver 2. While rotating the laser emitter 1 and laser receiver 2, the photoswitch 6, rotate it 180 degrees until it can be confirmed again. At this time, the laser receiver 2 If the laser beam can be received continuously, the inner diameter of coil C is normal and the block By swinging the arm 9 as shown by the two-dot chain line in Fig. 1, the coil C is attached to the mandrel. 40. Also, if the laser beam is interrupted, there is an abnormality in the inner diameter. Therefore, remove coil C from the line.

0012

[Effect of the idea]

As described above in detail based on the examples, the coil inner diameter abnormality according to the present invention According to the detection device, the coil is rotated while the laser emitter and laser receiver are rotated synchronously. Since abnormalities in the inner diameter are detected, the detection work is extremely easy, but it can also be used indoors. This has the effect of eliminating false detections caused by lights or light from outside.

[Brief explanation of drawings]

FIG. 1 is a cutaway side view of a main part of a coil inner diameter abnormality detection device according to the present invention.

FIG. 2 is a sectional view taken along line AA in FIG. 1;

FIG. 3 is a plan view showing an example of a conventional coil inner diameter abnormality detection device.

FIG. 4 is a side view showing an example of a conventional coil inner diameter abnormality detection device.

[Explanation of symbols]

1 Laser emitter 2 Laser receiver 3 disc 6 Photo switch 7 Cover 9 boom 10 Hollow shaft 12 Rotation axis 13 Timing belt 14,15 Pulley 16 Lever 17 Hydraulic cylinder 21,22 base 30 coil car 40 Mandrel

──────────────────────────────────────────────── ─── Continued from front page (51) Int.Cl. ⁵ Identification code Internal reference number FI Technical display location H01S 3/00 F 7630-4M

Claims (1)

[Scope of utility model registration request] Claim 1: A coil inner diameter abnormality detection device for detecting an inner diameter abnormality of a metal strip coil inserted into a mandrel of an unwinding machine, comprising: a laser emitter rotating along the inner diameter of the coil; A coil inner diameter abnormality detection device comprising: a laser receiver that rotates at the same diameter and at the same angle; and a drive means that rotates and drives the laser emitter and the laser receiver in conjunction with each other.