JPS597541B2 - Steel longitudinal section device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device that measures the minimum width (two points) of a steel material and moves the steel material to a longitudinal centerline based on the measured value to longitudinally cross the steel material.

It is well known to longitudinally cross-section steel materials, such as steel slabs of a predetermined width and length manufactured based on the continuous casting method, or slabs obtained by blooming and rolling of steel ingots obtained based on the ordinary ingot-forming method. . As a general longitudinal method, a device is used to mark a cutting line and move a gas cutting nozzle along the cutting line.

However, with the above-mentioned longitudinal method, there is a problem in that the target steel material is limited to one that has been cooled to about room temperature because of the scribing work, and that it requires manual labor. A possible countermeasure to this problem is to use mechanized equipment for cutting, including marking work, but when cutting steel materials, especially longitudinal sections, the actual steel material itself may not be a regular rectangle but a trapezoid shape in the length direction. Therefore, it is difficult to cut along the center line in the width direction of the steel material because the cutting profile cannot be taken from the long side end surface of the steel material to be cut.

What has overcome this difficulty and made mechanization possible is that before cutting the steel material, the width of the steel material is measured at two points to determine the center line (cutting line), and the cutting line is cut based on this determined value. There is a device that automatically controls the position of the crater (moves it along the cutting line), but it requires a device to move the crater along the cutting line and a control device, and the structure itself is complex. It's expensive. The present invention aims to provide a device that is simple in structure and can cut the center of a steel material with high precision.

Hereinafter, the apparatus of the present invention will be specifically explained based on the drawings. FIG. 1 is an explanatory top view of the apparatus of the present invention, and FIG. 2 is an explanatory front view of the apparatus of the present invention.

As shown in Figures 1 and 2, there are rails 2,
Lay 7. A truck 3 is placed on the rails 2, 2/. This truck 3 is self-propelled by a drive mechanism (not shown).
The trolley 3 measures the width of the steel material A and measures the crater 1 as described later.
6, it is necessary to minimize mechanical displacement during travel. Therefore, as shown in FIG. 2, the head of one of the rails 2 is made into a trapezoid, and the bogie 3 is provided with wheels 4 that are in contact with the head of the rail 2. The other rail 25 and wheel 1 may be ordinary ones, or may be a combination of the above-mentioned rail 2 and wheel 4. A steel width measuring arm 5 is provided on one side of the cart 3 to project horizontally.

The length of this steel material width measuring arm 5 is longer than the maximum width of the steel material A. A steel end face detection end 6 farther from the cart 3 is suspended and fixed at one end of the arm 5, and the arm 5 is provided with a drive device consisting of a piston cylinder 7 operated by fluid pressure.
Reference numeral 20 in the figure indicates a sliding guide for the arm 5, and an enlarged cross-sectional view thereof is shown in FIG. 3, and reference numeral 21 in the figure indicates a guide roller. Thus, by the operation of this cylinder 7, the cart 3 of steel material A is
The end face of the steel material A is detected by bringing the steel material end face detection end 6 of the arm 5 into contact with or separating from the end face of the farther end. Further, a pointer 8 for indicating the steel material width with the rail 2 as a reference is fixed on the arm 5, and the steel material width with the rail 2 as a reference is read by a steel material width indicating scale 9 installed on the sliding guide 20. On the other hand, the positioning of the longitudinal centerline of the steel material A is performed by a steel material pushing device 11 fixedly installed inside the steel material mounting table 10 and a steel material moving device 13 for longitudinal centerline determination fixedly installed on the steel material mounting frame 12. It will be done. This steel material moving device 13 is driven by a piston cylinder operated by fluid pressure, for example, and the steel material pushing device 11
is actuated by a drive device consisting of a piston cylinder 14 and a link mechanism 15 operated by fluid pressure.

In the figure, 22 indicates an opening through which the push roller 23 enters and exits. At least two steel material moving devices 13 are installed in the length direction of steel material A, and are 1/2 of the maximum width and minimum width range of steel material A.
It is possible to move independently within the range of .

Also, one or more steel material pushing devices 11 are installed in the length direction of the steel material A, and no matter which movement range of the steel material moving device 13 or in any width of the steel material A, the steel material moving device 11 can push the steel material A into the steel material moving device. 13 can be moved within the range where it can come into contact with the object. The above-described arrangement of the steel material pushing device 11 and the steel material moving device 13 may be reversed. Further, the steel material pushing device 11 and the steel material moving device 13 do not necessarily need to be installed on the mounting table 10 and the mounting frame 12. The crater 16 is disposed at one end of an arm 17 provided in parallel with the arm 5 so as to be movable up and down and swingable in the direction of carriage movement.

In the figure, 24 is a fuel pipe for the steel cutting nozzle 16, and only part of the pipe is shown. Steel material mounting stand 10, steel material mounting frame 1
2 is suitable for dividing the steel material A into two pieces}9, and the central part of the mounting table 10 is a space. FIG. 4 shows the principle of vertically traversing steel materials A arranged in parallel in the moving direction of the trolley 3 using the apparatus of the present invention.

An example of the operating procedure of the apparatus of the present invention will be described below.

1) Determine the center line (cutting line) D' according to the standard width of the steel material to be cut (however, it varies depending on the type of material), and set the amount of overhang of the center line determining steel material moving device 13 that expands and contracts individually or simultaneously.

This determined center line is parallel to the reference rail 2.
2) Place the steel material A on the mounting table 10 and the mounting frame 12 using a lifting machine or the like.

3) The steel material A is brought into contact with the steel material moving device 13 by the steel material pushing device 11 facing the steel material moving device 13.

4) Evacuate the steel material pushing device 11.

5) Move the trolley 3 and install the steel width measuring device (
B at arm 5, detection end 6, piston cylinder 7),
Measure the distance from the reference roll of the end face of the steel material at point C2, that is, the actual width of the steel material. 6) If the measured values of the actual width of the steel material at points B and C are b and c, for example, if b > c (however, , b = reference width) is the steel material moving device 1 on the C point side according to this value.
3, the steel material A is moved by one deviation from the cutting center line σb-c determined in 1) above, so that the actual cutting center line D coincides with the above D7.

7) Since the crater 16 provided on the cutting cart 3 was moved by c using b as a reference in (previous section 6), the cutting center line is moved parallel to the rail 2 and set at 9, b.

This takes place with the illustrated moving device and guide. 8) As a result, the crater 16 is not moved during the vertical cutting, and the cutting is carried out only by the running of the cutting cart 3.

The above procedure is performed in the same way, for example, when b<c (where b=reference width). Further, the steel width measuring process and the longitudinal process at points B and C are distinguished by the moving direction of the cutting cart 3, the moving direction of arrow 19 in FIG. 1 being the steel width measuring process, and the moving direction of arrow 18 being the longitudinal process. In the above explanation, the actual cutting line D is
When matching the cutting line D' based on the reference width determined in advance, it was done on the assumption that the measured width of either dog holder was equal to the reference width, but both measurement values B and c were equal to the reference width. If the cut is different from the above, adjust as follows, for example, so that the cut can be made by just moving the trolley. (b>C, b, c>a
)0r(b>C,b>A,c<a)0r(c>B,b,
If c>a)0r(c>B, c>A, b<a). (
However, α = reference width) I Among the operations 1) to 8) above, 1) to
Perform the same operation up to 6), and in 7), set the torch crater 16 to b.
-Ac-a (b>c)0r? Move to (c>b) and set.

The subsequent step 8) is the same operation. Of the operations 1) to 8) above, operations 1) to 5) are performed in the same manner.

6) Then, what is the amount of tension b-a of the steel material moving device 13? (b>c) or c-a? (c>b), push the steel material A again with the pushing device 11, and further move the steel material A on the short side of the steel material A with the b-c device 13 (b>c) or c-b. ? Move the overhang again by (c>b).

After that, 7), 8 consolation operations were carried out. (b>C, b, c<a
)0r (c>B, b, c<a).

Of the operations 1) to 8) above, perform the same operations as 1) to 6), and in 7) set the torch nozzle 16 to b-Ac-a? (b>c)0r? Move to (c>b) and set.

This is the subsequent 8-entitlement operation. Of the operations 1) to 8) above, operations 1) to 5) are performed in the same manner.

6) Then, what is the amount of tension D protrusion b-a of the steel material moving device 13? (b
>c) Or c-a? Extrude by (c>b), and move the steel material A using the b-c moving device 13 on the short side? (b>c) Ac-b Ruiha? Move the overhang again by (c>b).

After that, steps 7) and 8) are the same operations.

In any of the above examples, if the method is used when cutting only to the same reference width, the torch nozzle 16 may be completely fixed.

In the above case, the standard for moving steel material A is the wider width. As described above, the device of the present invention uses a combination of a steel material pushing device and a steel material moving device to position the G-line during cutting parallel to the rail before longitudinally cutting the steel material. Inside, steel materials can be cut with high precision just by moving the cart without having to move around the crater. As described above, the present invention makes it possible to mechanize the longitudinal cutting of steel materials with a simple device, and will greatly contribute to the longitudinal cutting of steel materials.

[Brief explanation of drawings]

Fig. 1 is an explanatory top view of the device of the present invention, Fig. 2 is a front explanatory cross-sectional view of the inventive device, Fig. 3 is an enlarged cross-sectional view of Fig. 2 Y-r, and Fig. 4 is the principle of longitudinal centerline positioning. Explanatory diagram. In the figure, 1 is the operation site, 2 and 2' are the rails, 3 is the trolley, and 4 and 4'
5 is a wheel, 5 is a steel material width measurement arm, 6 is a steel material end face detection end, 7 is a piston cylinder (steel material width measurement arm drive device), 8 is a steel material width indicator, 9 is a steel material width indicator scale, 10 is a mounting table, 11 is a steel material pushing device, 12 is a mounting frame, 13 is a steel material moving device (piston cylinder), 14 is a piston cylinder for the steel material pushing device, 15 is a link mechanism for the steel material pushing device, 16 is a crater, 17 is a crater arm, 18 is an arrow in the longitudinal process direction, 19 is an arrow in the steel width measurement process direction, 20 is a sliding guide, 21 is a guide roller, 22 is an opening, 23 is a push roller, and 24 is a fuel pipe.

Claims (1)

[Claims] 1. A cart that runs on two rails, a mounting table for the steel material to be cut that is installed parallel to the rails, and the above-mentioned mounting table that is attached to an arm that extends perpendicularly to the traveling direction of the cart. In a steel material longitudinal cutting device having a cutting tip located above, a pair of longitudinal cutting centers whose protrusion length in the direction of the steel material to be cut can be adjusted are provided on one side in the cutting direction of the steel material to be cut, which is placed on the above-mentioned mounting table. In addition to providing a steel material moving device for line determination,
A steel material pushing device is provided on the other side to bring the steel material to be cut into contact with the steel material moving device for determining the longitudinal center line, and an arm extending in the same direction as the arm having the cutting tip is provided on the sliding guide provided on the cart. A width detection device for the steel material to be cut is provided at its tip, which has a detection portion for the end face of the steel material to be cut on the side far from the above-mentioned cart, and a guideline for indicating the width of the steel material based on the rail on the side closer to the steel material to be cut is provided as described above. 1. A vertical cutting device for steel material, characterized in that a scale is provided on the arm of the steel material width detection device to be cut, and a scale is provided on the sliding guide.