JPH06114718A - Steel plate flaw repairing device - Google Patents

Abstract

PURPOSE:To embody the complete automatization by detecting a direction of steel, turn-positioning a repair device matched with the direction of a steel plate, avoiding a shear back part, and freely changing a repair direction, in a steel plate flaw repair device relating to the thick steel plate. CONSTITUTION:Detectors 17a, 17b are provided to detect an end face of a steel plate 32 and its tilt. Based on this detected tilt of the steel plate 32, a motor 23 is driven to turn a grinding frame unit 14 and arbitrarily positioning a grinding direction. Traversing motors 24a, 24b are connected to pinion gears 25a, 25b meshed with rack gears 26a, 26b fixedly provided in a running common frame unit 27. Traversing wheels 28 are movably arranged on traversing rails 29, and the steel plate 32 is moved in a width direction by driving motors 24a, 24b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for caring for flaws in a steel sheet, and more particularly to an apparatus for caring for flaws which is suitable for efficiently repairing a partial flaw in a thick steel sheet.

[0002]

2. Description of the Related Art Conventionally, the defects of thick steel plates are often generated during the rolling process or during transportation, and there are many types such as ridge defects, beards, and crop defects. Is roughly divided into partial maintenance work. Among them, it is usual to introduce a full-scale grinder on the premise of offline for the full-scale maintenance work, but for the partial maintenance work, the partial flaws scattered online are highly efficient, and in addition, chattering, stepping, baking on the quality. Since it requires untidy maintenance, it currently relies on manual work using a wagon grinder tool. For the maintenance with this wagon grinder tool, the device shown in Japanese Utility Model Laid-Open No. 61-75953 and Japanese Utility Model Laid-Open No. 62-104856 can be used. This is a work that requires a great deal of skill because it affects the quality of the work.

Further, although an automatic maintenance machine has a grinding device using a cylindrical grindstone, the cylindrical grindstone has a difficult controllable surface near the start and end of flaw scratches, and the partial flaws scattered in the central portion of the steel plate. Not suitable for grinding. Further, JP-A-58-156
There is known a caring device having a grinding roll provided in an endless grinding belt as disclosed in Japanese Patent No. 63. By bringing a grinding roll into contact with a steel plate, surface contact grinding is performed, which is advantageous for localized recesses, steps, etc. and is effective for partial maintenance. However, in the actual automation, the flaw position of each steel sheet is confirmed, the steel sheets are positioned, and then the flaw grinding is performed in accordance with the flaw maintenance device.

[0004]

As described above, in the maintenance device having the grinding roll in the endless grinding belt as in the conventional Japanese Patent Laid-Open No. 58-15663, the orientation of the steel plate is changed. There is no disclosure of any technology for detecting and positioning the steel sheet according to the orientation of the steel sheet.
That is, the problem of full automation has not been solved. In order to solve such a problem, the present invention provides a flaw maintenance device which has a function of automatically detecting the orientation of a steel sheet, positions it according to the orientation of the steel sheet, and can freely change the maintenance direction. Is.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above objects in an advantageous manner. The gist of the invention is to provide an apparatus for automatically caring for flaws in a steel sheet. It has a function to detect the orientation, a swivel function is provided in the care device, and a device that detects the end face of the steel plate is provided while positioning according to the direction of the steel plate, and it is possible to freely change the care direction while avoiding the shear return part. The steel plate flaw maintenance device is characterized by the above.

[0006]

OPERATION AND EXAMPLE Hereinafter, an example of the present invention will be described in detail with reference to the drawings. FIG. 1 is a front explanatory view of the device of the present invention. FIG. 2 is a plan view of the device according to the present invention. As shown in FIGS. 1 and 2, reference numeral 1 denotes a shaft 3a rotatably supported on a grinding frame 14 by a grinding belt 1,
3b is stretched between the belt supporting pulleys 2a and 2b.
A driving motor (not shown) is connected to the shaft 3a, so that the grinding belt 1 is rotatable. A mechanism for adjusting the tension of the grinding belt 1 is built in on the shaft 3b side so that the tension state of the grinding belt 1 can be adjusted. Reference numeral 4 denotes a contact roll, which is a roller frame body 5 fixed to the lower surface of the head 6.
It is rotatably supported by. Guide rails 8a and 8b are provided on the front surface of the head frame body 7.
A guide bearing is fitted in 8b. The guide bearing is arranged on the rear surface of the head, and the guide rail 8a,
It is configured to be movable along 8b.

Reference numeral 9 is a head elevating cylinder, which is provided on the upper surface of the head frame 7, and the rod tip engages with the upper part of the head 6 to press the contact roll 4 against the grinding belt 1. Reference numeral 10 is a moving frame body 11 is a guide rail, and 12 is a ball screw. A motor 13 is connected to the ball screw 12 to push the contact roll 4.
A guide bearing is arranged on the rear surface of the head frame body 7 and fitted into the guide rail 11. Reference numerals 15a and 15b are guide rollers, and 16a and 16b are frames, which are in contact with the end faces of the steel plate 32, and the detection devices 17a and 17b detect the end faces of the steel plate 32. Reference numeral 18 is a detection device elevating cylinder that descends during measurement. Then, the guide roller 16 is attached to the steel plate 32.
a, 16b are brought into contact with each other at the same time, and detection devices 17a, 17b
The inclination of the steel plate 32 is calculated by.

Reference numeral 19 is a swiveling gear, which is a transverse common frame body 21.
The bearing 20 makes it possible to rotate. 22
The rotation drive gear box engages the rotation gear 19 with the motor 23 to perform the rotation operation. That is, the direction of the steel plate 32 is calculated by the detection devices 17a and 17b without correcting the placed state of the steel plate 32, and the grinding frame body 14 is swung by the motor 23 so that the grinding direction can be arbitrarily positioned. Two
The rack gears 4a and 24b are connected to the pinion gears 25a and 25b by traverse motors and are fixed to the common traveling frame 27.
It meshes with a and b. 28 is a traverse wheel and traverse rail 29
The top is movable. Therefore, it is movable in the width direction of the steel sheet. A traveling wheel 30 is rotatably supported by a lower portion of the traveling common frame 27 so as to move on the traveling rail 31. Moreover, it can be moved in the longitudinal direction of the steel sheet.

FIG. 3 is a schematic explanatory view of the maintenance operation according to the present invention. When caring for a steel plate, there may be a case where the caring direction is specified. In that case, if the care direction and the flaw generation direction are the same, it is difficult to detect the flaw because the streak and the flaw generated by the care are in the same direction. In such a case, as shown in FIG. 3 (A), a method of first performing care in the flaw direction and the cross direction a and then performing care in the designated direction b in the final care is adopted. Further, sharp edges are generated at the edge of the steel sheet during shear cutting, and when the longitudinal direction of the sharp portions and the rotation direction of the grinding belt are in the same state, the grinding belt may be broken due to the edges. Therefore, as shown in FIGS. 3 (B) and 3 (C), the orientation of the steel sheet is detected by the guide roller 15, and the grinding frame body 14 is detected.
It is possible to position the swivel in a direction that matches the orientation of the steel plate, and further to perform grinding maintenance at a position shifted from the end surface of the steel plate by the return width, for example, α °.

In this way, the function of automatically detecting the orientation of the steel sheet is provided, and the care device is provided with a swivel mechanism to perform positioning in accordance with the orientation of the steel sheet, detect the end surface of the steel sheet, and avoid shear return. It is in a device that allows the care direction to be changed freely.

[0011]

As described above, according to the present invention, the care device is provided with the turning mechanism and positioned according to the orientation of the steel sheet, so that the maintenance can be performed without positioning the steel sheet, and the shear cutting is performed. There is a device that can be maintained without getting back, can prevent the belt from being damaged, and can be changed freely in the direction of care.

[Brief description of drawings]

FIG. 1 is an explanatory front view of a device of the present invention.

FIG. 2 is an explanatory plan view of an apparatus according to the present invention.

FIG. 3 is a schematic explanatory view of a maintenance operation according to the present invention.

[Explanation of symbols]

 1 Grinding Belt 2a, 2b Belt Support Pulleys 3a, 3b Shaft 4 Contact Roll 5 Roller Frame 6 Head 7 Head Frame 8a, 8b Guide Rail 9 Head Lifting Cylinder 10 Moving Frame 11 Guide Rail 12 Ball Screw 13 Motor 14 Grinding Frame 15a, 15b Guide rollers 16a, 16b Frames 17a, 17b Detection device 18 Detection device Lifting cylinder 19 Swing gear 20 Bearing 21 Traverse common frame 22 Swiveling drive gear box 23 Motor 24a, 24b Traverse motor 25a, 25b Pinion gear 26a, 26b Rack gear 27 Running common frame 28 Traverse wheel 29 Traverse rail 30 Traveling wheel 31 Traveling rail 32 Steel plate

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Fukuchi 20-1 Shintomi, Futtsu-shi, Chiba Nippon Steel Corporation Corporate Technology Development Division

Claims (1)

[Claims] 1. A device for automatically caring for flaws in a steel plate, which has a function of detecting the orientation of the steel plate, and a swivel function is provided in the caring device for positioning in accordance with the orientation of the steel plate and for detecting the end face of the steel plate. A steel plate flaw care device characterized by being equipped with a device and being able to freely change the care direction while avoiding the sheared portion