JPS62101321A - Steel sheet testing device - Google Patents

Abstract

PURPOSE:To minimize the winding way applied on a strip by forming a coil by rewinding after performing a test with winding the strip by providing the winding drum with larger diameter than the minimum diameter of the coil at the delivery side. CONSTITUTION:The inspection instrument 3 which inspects the presence or absence of a flaw by irradiating the testing beam of ultrasonic wave, etc., on a strip S is arranged between the 1st, 2nd winders 1, 2 which support a coil C freely rotatably. The 2nd winder 2 has the winding drum 5 having the larger outer diameter D2 than the minimum winding diameter D1 of the coil C which is supported by the 1st winder 1 freely rotatably, and the drum 5 is driven in both directions by a driving motor 6. The inspection is performed with winding the strip S delivered by drawing from the coil C set to the 1st winder 1 by receiving mechanisms 4A, 4B with the 2nd winder 2. After winding the strip S on the 2nd winder 2, the strip S is rewound to the 1st winder 1 by reversing the device.

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial Application Field" The present invention relates to an inspection device that inspects a steel plate wound into a coil while unwinding it.

"Conventional technology" Conventionally, when inspecting a steel plate (hereinafter referred to as a strip) sent out from a production line in a coiled state, the inspection was carried out between a pair of winding machines that each rotatably supported the coil. Place the device in place and remove the coil (strip in the wound state) attached to one winder. - The lip is unwound and inspected while being temporarily wound by the other winding machine, and then the strip is unwound from the other winding machine to avoid forming a coil again.

[Problems to be solved by the invention] By the way, the above-mentioned inspection device attempts to detect defects by irradiating the strip with X-rays, magnetic field lines, or ultrasonic waves. When performing an inspection, it is necessary to apply strong tension to the unwound strip and stretch it in a straight line to maintain the distance from the inspection head to a constant, minute value. However, if the strip is repeatedly wound and unwound while applying a large tension to the strip, there is a problem in that the strip becomes even more curly than before the test.

The present invention has been proposed in view of the above circumstances, and an object of the present invention is to provide an inspection device capable of minimizing curling added to a strip.

"Means for solving the problem" In order to achieve the above object, the present invention provides a winding drum having a diameter larger than the minimum diameter of the coil on the unwinding side, and winds the strip on the winding drum. After inspecting the material while it is being removed, it is rewound to avoid forming a coil.

"Embodiment" An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

This inspection device uses ultrasonic waves,
An inspection device 3 for inspecting the presence or absence of flaws by irradiating inspection beams such as magnetic lines of force or X-rays onto the strip S is disposed, and further between the inspection device 3 and each of the winding machines 1 and 2. , a take-up mechanism 4A for holding and taking the strip S;
The basic configuration includes 4B.

The second winding machine 2 has a minimum winding diameter D1 of the coil C rotatably supported by the first winding machine 1.
It has a winding drum 5 having a larger outer diameter than the winding drum 5, which is adapted to be driven in both directions by a drive motor 6.

A notch 7 along the axial direction is provided in a part of the outer circumference of the winding drum 5, and a gripper 8 is provided inside this notch 7 (see FIG. 2). (See Figure 3). The grippers 8 are rotatably supported around a shaft 9, and a plurality of grippers 8 are installed at appropriate intervals in the axial direction of the drum 5 (only one gripper is shown).

Further, one end of the gripper 8 is rotatably connected to an operating rod II of a drive mechanism (in the illustrated example, a suitable pressure cylinder) 10 via a pin 12. And said drive mechanism! The base end of the drum 5 is rotatably connected to the inner periphery of the drum 5 via a pin 13. A contact surface 14 that comes into contact with the strip S is formed at the tip of the gripper 8, and this contact surface has a large distance between the surface and the shaft 9. A smaller spacer is provided. Furthermore, inside the drum 5 inside the notch 7,
A clamping surface 15 for clamping the strip S is formed between it and the contact surface 14 of the gripper 8. In addition, the reference numeral 16 in the figure
is a manpole for people to enter and exit the winding drum 5.

Each of the take-off mechanisms 4A and 4B has the function of pinching and pulling the strip S between a pair of pinch rolls 17 and 17, and these take-off mechanisms 4A and 4B
is provided with guide plates 18 to 2I that support the strip S when guiding the strip S from the first winder 1 to the second winder 2 via the inspection device 3. Of these guide plates 18 to 21, the guide plate 18 is
The guide plate 19 is reciprocated in the plane direction by the hydraulic cylinder 22, supports the strip in a fixed state, the guide plate 20 is operated by the hydraulic cylinder 23 to move up and down, and the guide plate 21 is Fluid pressure cylinder 24
It is operated by the user to move up and down.

The inspection device 3 is guided by a rail (path shown in the diagram) laid on the floor and moves in a direction perpendicular to the plane of the paper in FIG.
It is designed to be able to be evacuated from the driving range of the vehicle.

The operation of the inspection device configured in this way will be explained.

(i) In addition to retracting the inspection device 3, the first winding machine! A guide plate in which a strip S is unwound little by little from a coil C set in and extended in the plane direction! 8. Guide the guide plate 19 in a fixed state and the guide plates 20 and 21 in a raised state, and
Pinch roll 17! 7 and pull it close to the second winding device 2.

(11) Bring the drive mechanism 10 into the contracted state as shown in FIG. 2, separate the holding surface 15 from the contact surface 14, and insert the tip of the strip S between them.

(iii) In order to set the inspection device 3 at a predetermined position while setting the drive mechanism IO in an extended state as shown in FIG. 3 and sandwiching the tip of the strip S between the contact surface 14 and the clamping surface 15, In order to prevent the strip from rubbing against the guide device during inspection, the guide plate 18 is retracted and the guide plates 20 and 21 are lowered.

(1v) Take-up mechanism 4A/4 from the first winder l
The inspection is carried out while winding up the strip S pulled out by the second winder 2.

(v) After winding up all the strips S on the second winding machine 2 (preferably, after inspecting a predetermined length), reversely rotate the device and wind up the first strip S. Rewind the strip S to the winder I.

The hydraulic cylinders constituting the drive mechanism IO are maintained by a worker entering the drum through a manhole, and the hydraulic cylinders are operated from outside by extending the hydraulic circuit to the outside of the drum.

"Effects of the Invention" As is clear from the above explanation, the present invention provides a tension reel with a diameter larger than the minimum diameter of the coil on the unwinding side, and performs inspection while winding the strip on the tension reel. After that, the coil is unwound and re-formed, so (a) the amount of unwinding due to repeated unwinding and unwinding for inspection can be kept to a minimum.

(b) Since the diameter of the winding drum is large, there is sufficient space inside the drum, and a simple strip holding mechanism operated by a hydraulic cylinder or the like can be installed, thereby reducing the cost of the winding machine. I can do it.

It produces a immersive effect.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is an overall side view, FIGS. 2 and 3 are cross-sectional views of a winding drum, and FIG. 2 shows a gripper. In the open state, FIG. 3 shows the gripper activated state. 1...First winding machine, 2...Second winding machine, 3...Inspection device, 4A, 4B...
...Take-up mechanism, 5... Winding drum, 7... Notch, 8...-Gripper-1l
O... Drive mechanism (hydraulic cylinder), 14...
・Contact surface, 15... Clamping surface, 16...
Manpole, C...Coil, S...Strip.

Claims (1)

[Claims] While winding the strip unwound from the coil wound by the first winding machine with a second winding machine,
In the steel plate inspection apparatus, the inspection is carried out by an inspection device installed between these winders, and after the inspection is finished, the steel sheet is rewound again to the first winder. 1. A steel plate inspection device comprising a winding drum having an outer diameter larger than the minimum diameter of a coil wound on a first winding machine.