JP2527121Y2 - Structure of edge detector for flat steel edge flaw detector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an improvement in an edge detection unit of an edge flaw detector for flat steel of various dimensions and shapes.

[Conventional technology]

Flat steel roll-formed at steelmaking plants has a wide variety of shapes and dimensions. In addition, inspection of all flaws is required due to its use.

Therefore, a flat steel edge flaw detector having a detection unit into which a cassette assembled in various sizes and shapes is inserted has been developed (see FIG. 3). The detection unit of the conventional device will be described with reference to the drawings.

The guide member 1 includes a protection rail 11 having a function of inductively magnetizing a flat steel W as a material to be inspected and a spacer plate 12 for adjusting a gap, and a through hole suitable for the shape and size of the material to be inspected W.
13 is a protective rail main body which is selectively combined, inserted and fixed so as to form 13 (see FIG. 3).

The assembling member 2 inserts various pairs of edge coil pieces 21, 21 suitable for the edge size and shape of the flat steel W, and the side plates 22, 22 having a length suitable for the width of the flat steel W in the width direction.
An edge coil holder that positions the edge coil pieces 21 and 21 and fixes it so that a hole 23 having a cross-sectional shape that can penetrate the flat steel W is formed.

The magnetized yoke 3 inserts the assembly member 2 between the guide members 1 and 1 and inserts and fixes the through holes 13, 13 and 23 so that the through holes 13, 13 and 23 are aligned with each other. Thus, the magnetized yoke 3 after assembly is a detection unit.

[Problems to be solved by the invention]

Conventionally, in the case of the detection unit of the above-described conventional apparatus, a large number of parts are prepared, assembled, and inspected according to the size and shape (edge shape is a corner, a semicircle, a semiellipse, etc.) of the inspection target material W. ing. However, as long as the type of flat steel, which is the material to be inspected, is small in shape and size, the number of these parts is small, but as the type expands, the number of parts to be prepared increases, and storage management increases. Also, it takes time and effort to select and retrieve.

As a result of various studies, this measure has been devised so that a small number of connecting members can cope with a change in the width of the material to be inspected.

[Means for solving the problem]

The present invention has been made as a result of various studies as described above, and the gist thereof is as follows.
That is, among the various flat steels to be inspected, for each flat steel having a specific size and shape, a guide member having a built-in induction magnetizing member suitable for its cross-sectional shape is loaded, and the edge of the flat steel is loaded. An edge coil piece having a notch suitable for the shape is connected to an assembling member with a connecting member having an optimum length extending in the width direction of the flat steel, and a cross-sectional shape capable of penetrating the flat steel is assembled and formed. An assembling member is loaded so that the guide member and the through hole thereof communicate with each other, and the flat bar is penetrated into a magnetized yoke serving as a detection unit optimal for the size and shape of the flat bar. In the structure of the edge detecting unit for a flat steel edge flaw detector for detecting the width of the flat steel, the width direction connecting member of the flat steel is divided into two in a direction orthogonal to the width direction, and the edge coil piece engaging portion of each of the divided connecting members Is at the opposite end in the width direction A long hole having a direction is provided, and the edge coil piece is engaged with the engaging portion at the engaging portion, and is fixed to the assembly member with a bolt at a position in the long hole suitable for a width dimension of the flat steel. It is a structure of an edge detector for a flat steel edge flaw detector which can be adapted to various width changes.

 Next, an assembling procedure for the above configuration will be described.

First, a spacer plate as a gap adjusting material having a specific thickness and a protection rail as an induction magnetizing member having a specific size are selected according to the thickness and width dimensions and edge shape of a flat steel as a material to be inspected. Then, the spacer plate is fitted to the back surface of the protection rail, and extends in the longitudinal direction of the rail in a through hole of the protection rail main body, which is a guide member,
The same thing which is fitted and the protection rail is fixed to the protection rail main body is fixed to the protection rail main body such that the rail faces the fixed protection rail. The assembled protection rail main body is inserted from the respective entrances of the through holes of the magnetized yoke serving as the detection section, one by one, in a direction in which the through holes for the inspection material between the protection rails coincide with each other.

Next, a pair of edge coil pieces suitable for the edge shape and dimensions of the material to be inspected are selected. Then, in place of the side plate which is a connecting member having a length matched to the width direction of the flat steel which is the material to be inspected of the conventional detection unit, in the present invention, as in the above configuration, the direction orthogonal to the width direction is used. The engagement portion of the split plate divided into two is engaged with each engagement portion on both sides of the edge coil piece, and has a longitudinal direction in the width direction opposite to the engagement portion of the spacer. The edge coil pieces are fixed to the assembly member with bolts at a position suitable for the width dimension of the material to be inspected in the hole. As a result, an assembly member having a through-hole that can penetrate from the tip of the flat steel as the material to be inspected is formed. The assembled member after the assembly is inserted into the fitting hole of the magnetized yoke and inserted between the inserted guide members, and the material to be inspected passes through the through hole of one guide member and the through hole of the assembly member. And a detection unit that can exit through the through hole of the other guide member.

Next, the inspection unit is connected to the electronic device unit with a cord. This completes an edge flaw detector for a particular flat bar.

[Action / Effect]

Flat steels, which are inspection materials whose dimensions and shapes match the inspection material through-holes of the detection unit of the detection unit, are inserted one by one from their longitudinal ends and penetrated. As a result, a scratch existing at the edge is detected.

According to the detection unit, even if the width dimension is diversified, the detection unit can be easily assembled and coped with, and the number of types of divided spacers to be prepared is reduced, and the time for component management and selection and extraction are also reduced. And it is easy to assemble. Moreover,
The inspection accuracy is the same as that of the conventional device.

〔Example〕

Next, an embodiment of the present invention will be described with reference to the drawings.

1 (a) and 1 (b) are an enlarged front view and a side view of a main part (divided spacer), and FIG. 2 is a perspective view for explaining the main part assembly.

FIG. 3 is an explanatory view for assembling the conventional apparatus, but the same parts of the apparatus of the embodiment will be described with reference to FIG.

The flat steel W to be inspected has a semicircular edge and a thickness of 17 mm x
It is 80mm wide x 6m long.

1 is a protection rail body (cassette case),
A cylindrical outer diameter that fits into a through hole 31 of a magnetization yoke 3 described below, and a through hole 13 having a rectangular cross section that can fit spacer plates 12 and protection rails 11 of various dimensions described later into each short side portion,
It has the extended axis center.

Reference numeral 11 denotes a protection rail, which has a cross-sectional shape, a dimension of the flat steel W in the thickness direction of 20 mm, a notch groove corresponding to the shape of the material to be inspected, and a shaft of the protection rail main body 1. It has the same length as the direction length, and has a function of guiding and guiding the edge of the flat bar W and magnetizing it.

However, in addition to the above, protection rails 11 having various thicknesses and widths are prepared according to the thickness and width dimensions of the flat steel W.

Reference numeral 12 denotes a spacer plate, and the protection rail 11
A gap adjusting plate to be inserted between the flat bar W and the protection rail main body 1, and various types having a large or a small thickness depending on the width of the flat bar W are prepared.

The protection rail main body 1 is fitted into the through hole 13 with the protection rail 11 behind the spacer plate 12 so that the protection rails 11 are one above and below each other, and both face each other.
It is fixed with bolts 14.

Reference numeral 2 denotes a thin and deep box-shaped edge coil holder (cassette case), which is an edge coil piece to be described later from above and below.
A through-hole 25 for fitting each of the flat bars 21 is provided, a through-hole 23 through which the flat steel W can penetrate in a thin lateral direction is provided, and the box-shaped side and bottom portions are So as to be fitted and fixed in the upper hole 32 of the magnetized yoke 3
Irregularities are formed. In addition, handle 27 for taking out
Is provided on the upper part.

Reference numeral 21 denotes an edge coil piece suitable for various dimensions and shapes of the flat steel W as the material to be inspected. In this embodiment, the edge coil piece has a semicircular cutout groove according to the shape of the material to be inspected. The flat bar W is fitted into the through-hole 25 of the edge coil holder 2 so as to face each other from above and below in the width direction of the flat bar W.

22A and 22B are divided plates, and in the conventional device,
In the present invention, this is an integral side plate 22, which is divided into two parts in a direction perpendicular to the width direction of the flat steel W. One end has a projection (engaging portion) 24 that engages with the edge coil piece 21, and the other end has a width direction of the flat steel W for fixing to the edge coil holder 2. It has a slot 26 having its longitudinal direction,
26, the edge coil holder 2 and the edge coil piece 21 are positioned at an interval corresponding to the width dimension of the flat steel W and an alloance, and the slot of the divided plate is elongated.
It is to be halted within 26.

Numeral 3 denotes a cubic magnetized yoke, which has a through hole 31 for inserting the protection rail main bodies 1 and 1 from both ends.
And it has a hole 32 into which the edge coil holder 2 is fitted vertically from the upper center. Then, the edge coil holder 2 is inserted between the protection rail main bodies 1 and 1,
These through holes 13, 23, 13 are fixed so as to coincide with each other. The magnetized yoke 3 after this assembling is a detecting section.

 Next, the operation and effects of the above embodiment will be described.

Flat steel W which is the material to be inspected with the dimensions and shape selected specifically
However, one by one from the longitudinal end of the protection rail 1
When the flat bar W is inserted between the edge coil pieces 21 and 21 and passes between the edge coil pieces 21 and 21, flaws existing on both edges W 1 and W 2 of the flat steel W are detected.

According to the detection unit, even if the width dimension changes to 80 mm, 90 mm, 100 mm, etc., it is not necessary to replace each of the split plates 22A and 22B with a plate that matches the size, but only the slot 26 It was only necessary to slightly change the holt tightening position, and the number of parts was not short, and the labor and cost of parts management, removal, maintenance, etc., were reduced.

In order to set the interval between the divided plates 22A and 22B to a predetermined size, the length of the cross section is set to a length that matches the required size in advance, and a gradually tapered gauge (shown in FIG. In addition, a line corresponding to the center is provided in advance in the center of the side surface, and a center line perpendicular to the center line is provided in the width direction portion of the flat steel W of the edge coil holder 2, the division is performed. When the plates 22A and 22B are set so that the two center lines coincide with each other, the necessary intervals can be set easily and quickly. In addition, there was no difference in the detection of the flaw between the use of the above-mentioned detection unit and the flaw detection by the conventional device.

[Brief description of the drawings]

FIGS. 1 and 2 show an embodiment of the present invention. FIGS. 1 (a) and 1 (b) are enlarged front and side views of a main part (divided plate), and FIGS. The figure is a perspective view for explaining a main part assembly. FIG. 3 and FIG. 4 are drawings of the conventional apparatus, FIG. 3 is an explanatory view for assembling, FIG. 4 (a) and (b)
FIG. 2 is a partially enlarged front view and an assembled side view. 1: Guide member (protection rail body) 11: Protection rail, 12: Spacer plate 13: Through hole, 14: Bolt 2: Assembly member (edge coil holder) 21: Edge coil piece, 22: Side plate, 22A, B: Split side plate (divided plate), 23: Through hole 24: Projection (engagement part) 25: (Top and bottom) through hole, 26: Slot 27: Handle 3: Magnetized yoke (detection part), 31: Through hole 32: Top hole

Claims (1)

(57) [Scope of request for utility model registration] A guide member incorporating an induction magnetizing member suitable for a cross-sectional shape is loaded for each flat steel having a specific size and shape among various flat steels to be inspected. An edge coil piece having a cutout suitable for the edge shape of the steel is assembled with a connecting member having an optimum length to extend in the width direction of the flat steel, and is connected to an assembling member to assemble a cross-sectional shape through which the flat steel can penetrate. The formed assembling member is loaded so that the guide member and the through hole thereof communicate with each other, and the flat bar is penetrated into a magnetized yoke which is a detection unit optimal for the dimension and shape of the flat bar. In the structure of an edge detection unit for a flat steel edge flaw detector that detects an edge flaw, the flat steel width direction connecting member is divided into two in a direction orthogonal to the width direction, and the edge coil piece connection member of each of the divided connecting members is divided. At the end in the width direction opposite to the joint A long hole having a longitudinal direction is provided, and the edge coil piece is engaged with the engaging portion at the engaging portion, and the bolt is fixed to the assembly member at a position in the long hole suitable for the width dimension of the flat steel. The structure of an edge detector for a flat steel edge flaw detector which can be adapted to various width changes.