JPH04126156U - Structure of edge detection part for flat steel edge flaw detection device - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to an improvement of the edge detection section of an edge flaw detection device for flat steel of various sizes and shapes.

[Conventional technology]

Flat steel rolled and formed in a steel factory has a wide variety of shapes and dimensions. Furthermore, due to its intended use, inspection of all flaws is required.

Therefore, a flat steel edge flaw detection device has been developed that has a detection section into which cassettes assembled in various sizes and shapes are inserted (see FIG. 3). The detection section of this conventional device will be explained based on the drawings.

The guide member 1 includes a protective rail 11 that has the function of inductively magnetizing the flat steel W that is the material to be inspected, a spacer plate 12 for adjusting the gap, and a through hole 13 that is suitable for the shape and size of the material W to be inspected. This is a protection rail main body that is inserted and fixed in combination with each selected one (see Fig. 4).

In the assembly member 2, a pair of edge coil pieces 21, 21 suitable for the edge dimensions and shape of the flat steel W are inserted, and site plates 22, 22 of a length suitable for the widthwise length of the flat steel W are inserted. This is an edge coil holder in which the edge coil pieces 21, 21 are positioned and fixed so that a hole 23 having a cross-sectional shape that can penetrate the flat steel W can be formed.

In the magnetizing yoke 3, the assembly member 2 is inserted between the guide members 1, 1, and the through holes 13, 13, 23 are inserted and fixed so that they are aligned with each other. The magnetization yoke 3 after assembly is a detection section.

[Problem that the invention attempts to solve]

Conventionally, in the case of the detection section of the above-mentioned conventional device, a large number of parts are prepared, assembled, and inspected depending on the size and shape of the material W to be inspected (edge shape is square, semicircular, semielliptical, etc.). ing. However, while the number of types of flat steel to be inspected for each shape and size is small, the number of these parts is small, but as the number of types gradually expands, the number of parts to be prepared increases, and storage management becomes difficult. It also takes time and effort to retrieve the information and selection.

As a result of various studies on this countermeasure, we devised a method that can cope with changes in the width of the inspected material using a small number of connecting members.

[Means for solving problems]

The present invention was developed as a result of various studies as described above, and its gist is as follows. That is, among the various flat bars that are the materials to be inspected, for each flat bar of a certain specific size and shape, a guide member incorporating an induced magnetization member suitable for the cross-sectional shape is loaded, and the edge of the flat bar is The edge coil piece having a notch suitable for the shape is connected to an assembly member by a connecting member having an optimum length extending in the width direction of the flat steel, so that a cross-sectional shape through which the flat steel can pass is assembled and formed. The assembly member is loaded so that the guide member and its through hole communicate with each other, and the flat steel is penetrated into the magnetization yoke, which has been made into a detection part that is optimal for the size and shape of the flat steel, and the edges of the flat steel are cleaned. In the structure of the edge detection section for a flat steel edge flaw detection device, the widthwise 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 divided connecting member is A long hole having a longitudinal direction is provided at the opposite end in the width direction, and the engaging portion engages the edge coil piece, and the assembly is performed at a position within the long hole that is suitable for the width dimension of the flat steel. This is a structure of an edge detection section for a flat steel edge flaw detection device that can adapt to various width changes and is characterized in that it is fixed to a member with bolts.

Next, the assembly procedure for obtaining the above configuration will be explained.

First, a spacer plate, which is a gap adjusting material, having a specific thickness, and a protection rail, which is an induced magnetization member, having a specific size are selected according to the thickness, width, and edge shape of the flat steel that is the material to be inspected. Next, the spacer plate is aligned with the back surface of the protective rail, and is fitted into the through hole of the protective rail main body, which is a guide member, with the rail extending in the longitudinal direction, and the protective rail is fixed to the protective rail main body. A similar one is fixed to the fixed protection rail body so that the rail faces the fixed protection rail. One of the assembled protection rail bodies is inserted from each entrance of the through-hole of the magnetization yoke, which becomes the detection section, in such a direction that the through-holes for the object to be inspected between the protection rails are aligned 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. In place of the conventional side plate, which is a connecting member with a length that matches the widthwise dimension of the flat steel that is the material to be inspected in the detection section, in the present invention, as in the above configuration, the side plate is used in the direction perpendicular to the widthwise direction. The engaging portion of the split plate that is divided into two is engaged with the engaging portions on both sides of the edge coil piece, and the length has a longitudinal direction in the width direction on the opposite side of the engaging portion of the spacer. The edge coil pieces are fixed to the assembly member with bolts at a position in the hole suitable for the width dimension of the material to be inspected, with the edge coil pieces facing each other. As a result, an assembly member is produced in which a through hole is formed that can be penetrated from the tip of the flat steel that is the material to be inspected. The assembly member after this assembly is inserted into the fitting hole of the magnetization yoke and inserted between the inserted guide members, and the inspected material is passed from the through hole of one of the guide members to the through hole of the assembly member. A detection section is configured that can pass through the guide member and exit through the through hole of the other guide member.

Next, this testing section is connected to the electronic device section using a cord. With this, an edge flaw detection device for a certain specific flat steel is completed.

[Action/Effect]

A flat bar, which is a material to be inspected, whose dimensions and shape match the through hole of the material to be inspected in the detection section of this device is specified.
They are inserted one by one from their longitudinal ends and penetrated. As a result, flaws existing in the edge portion are detected.

According to the above-mentioned detection unit, even if the width dimensions become diverse, the detection unit can be easily assembled and handled, and the number of types of divided spacers that need to be prepared is reduced, and the effort for managing parts and selecting and extracting them is also reduced. It is also easy to assemble. Moreover, the inspection accuracy is the same as that of conventional devices.

〔Example〕

Next, one embodiment of the present invention will be described based on the drawings.

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

Although FIG. 3 is an explanatory diagram for assembling the conventional device, the same parts of the device of the embodiment will be explained using FIG. 3.

The flat steel W, which is the material to be inspected, has a semicircular edge and is 17 mm thick x 80 mm wide x 6 m long.

Reference numeral 1 denotes a protection rail main body (cassette case), which has a cylindrical outer diameter that fits into a through hole 31 of a magnetization yoke 3, which will be described later, and a spacer plate 12 of various dimensions, which will be described later, and a protection rail 11 on each short side. It has a through hole 13 having a rectangular cross section that can be fitted into the shaft centering on the axis of the extended shape.

Reference numeral 11 denotes a protection rail, which has a cross-sectional shape of 20 mm in the thickness direction of the flat steel W, a cutout groove that matches the shape of the material to be inspected, and an axis of the protection rail main body 1. It has the same length as the length in the direction, and has a function of guiding the edge portion of the flat steel W and magnetizing it.

However, in addition to this, protection rails 11 having various thicknesses and widths are prepared depending on the thickness and width of the flat steel W.

12 is a spacer plate which is inserted between the protection rail 11 and the protection rail main body 1 for adjusting the gap, and the thickness thereof may be thick or large depending on the width dimension of the flat steel W. A variety of thin dishes are prepared.

The protection rail main body 1 is fitted into its through hole 13 with the spacer plate 12 behind, one protection rail 11 at the top and bottom so that the two face each other, and fixed with bolts 14. be done.

2 is a thin and deep box-shaped edge coil holder (
cassette case), which is provided with through holes 25 for fitting edge coil pieces 21, which will be described later, from the upper and lower parts, and a through hole 23 through which the flat steel W can pass through in the lateral thin thickness direction. In addition, the side and bottom portions of the box shape are formed with projections and depressions so as to be fitted into and fixed in the upper hole 32 of the magnetization yoke 3. In addition, a handle 27 is provided on the top for taking out.

21 is an edge coil piece suitable for various dimensions and shapes of the flat steel W which is the material to be inspected, and in this example, it has a semicircular notch groove that matches the shape of the material to be inspected; The flat steel W is fitted into the through hole 25 of the edge coil holder 2 in the width direction of the flat steel W so as to face each other from above and below.

22A and 22B are dividing plates, and in the conventional device, it was an integrated side plate 22, but in the present invention, this is divided into two in a direction perpendicular to the width direction of the flat steel W. be. The flat steel W has a protrusion (engaging portion) 24 that engages with the edge coil piece 21 at one end and is fixed to the edge coil holder 2 at the other end. It has a long hole 26 having a longitudinal direction, and using this long hole 26, the edge coil holder 2 and the edge coil piece 21 are spaced apart by the width direction dimension of the flat steel W and an allowance. It is then positioned and bolted within the elongated hole 26 of this split plate.

Reference numeral 3 denotes a cube-shaped magnetization yoke, which has a through hole 31 into which the protection rail bodies 1, 1 are inserted from both ends, and a hole 32 into which the edge coil holder 2 is inserted vertically from the center of the upper part. has.

The edge coil holder 2 is inserted between the protection rail bodies 1, 1, and fixed so that the through holes 13, 23, 13 are aligned with each other. The magnetization yoke 3 after assembly is a detection section.

Next, the functions and effects of the above embodiment will be explained.

Flat steel W, which is a material to be inspected having a specifically selected size and shape, is inserted one by one between the protective rails 11 from the longitudinal ends thereof, and passes between the edge coil pieces 21, 21. At this time, flaws existing on both edges W1 and W2 of the flat steel W are detected.

According to the detection unit, the width dimensions are 80 mm and 90 mm.
mm, 100 mm, etc., it is not necessary to replace each of the divided plates 22A and 22B with a plate that matches the size, but simply changes the bolt tightening position within the elongated hole 26 slightly. The number of parts is sufficient, and the number of parts is not limited, but the effort and cost of parts management, removal, maintenance, etc. can be reduced.

In addition, in order to make the interval between the above-mentioned dividing plates 22A and 22B a predetermined dimension, the length of the cross section is set in advance to a length that matches the required dimension, and a gradually tapered gauge (not shown) is used. ), and a line corresponding to the center is provided in advance at the center of the side surface, and on the other hand, a center line perpendicular to this is provided in the widthwise portion of the flat steel W of the edge coil holder 2. When setting the plates 22A and 22B, by aligning both center lines, the plates 22A and 22B can be set with the necessary spacing easily and quickly.

Further, there was no difference in the detection of flaws whether using the above-mentioned detection unit or using a conventional device.

[Brief explanation of drawings]

1 and 2 show one embodiment of the present invention. It is a perspective view for explaining part assembly. 3 and 4 are drawings of the conventional device, FIG. 3 is an explanatory diagram for assembly, FIG. 4 A and B are a partially enlarged front view and an assembled side view, and FIG. 5 is a conventional FIG. 2 is an explanatory diagram of a spacer portion of the device in comparison with that of the present invention. 1... Guide member (protective 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... Divided side plate (divided plate), 23... Penetration Hole, 24... protrusion (engaging part), 25... (upper and lower)
Through hole, 26...Long hole, 27...Handle, 3...
Magnetization yoke (detection section), 31... Through hole, 32...
...Top hole.

Correction Heisei 4.7.3
The brief description of the drawing has been amended as follows. ``, Figure 5 is an explanatory figure'' from line 12 to line 13 on page 13 of the specification is deleted.

Claims (1)

[Scope of Claim for Utility Model Registration] Among the various flat bars to be inspected, each flat bar of a certain size and shape is loaded with a guide member incorporating an induced magnetization member suitable for its cross-sectional shape. , A connecting member having an optimum length extending in the width direction of the flat steel is connected to an edge coil piece having a notch suitable for the edge shape of the flat steel to the assembly member to form a cross-sectional shape through which the flat steel can penetrate. The assembled and formed assembly member is loaded so that the guide member and its through hole communicate with each other, and the flat bar is penetrated into a magnetization yoke that serves as a detection portion that is optimal for the size and shape of the flat bar. , in the structure of an edge detection unit for a flat steel edge flaw detection device that detects flaws on both edges thereof, the width direction connecting member of the flat steel is divided into two in a direction orthogonal to the width direction, and the edge of each divided connecting member is A long hole having a longitudinal direction is provided at the end in the width direction opposite to the coil piece engaging part, and the edge coil piece is engaged with the engaging part, and the length is suitable for the width dimension of the flat steel. A structure of an edge detection part for a flat steel edge flaw detection device that can adapt to various width changes, characterized in that it is fixed to the assembly member at a position inside the hole with a bolt.