JPS5917102A - Measuring device of length of long-sized rolled material - Google Patents

Abstract

PURPOSE:To reduce the time for measuring length and to improve the accuracy in measurement by providing devices for cutting and positioning the preceding end of a long-sized rolled material, a carriage mounted with a television camera movable in parallel with the longitudinal direction of the long-sized rolled material, etc. CONSTITUTION:A measuring device for length has a long-sized steel plate 1 which is a measuring object, cutting and positioning devices 7, 8, 9, a carriage 3, etc. The device 7 is a gate type stand installed across the long-sized steel plate, and the device 8 is two units of beam projectors which project parallel beams having the space equal to the width of the product plate on the plate 1, is installed on the stand 7 and is so fixed as to be made movable in the transverse direction of the plate. The device is so constituted that the product length is displayed on a display device 12 for the position of the carriage by a detector 5 for the position of the carriage upon ending of positioning, and the product length is determined according to the length thereof. The time for measuring the length is reduced and the accuracy in measurement is improved by the above- mentioned constitution.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a length measuring device for a long rolled material that determines the final product length based on the shapes of the leading and trailing ends of the object to be measured.

For example, when cutting multiple products from a thick steel plate,
Generally, it is necessary to measure the entire length of the long material. Specifications for product sizes generally have some accepted 11] for standard values. Therefore, if the sum of the standard length of the product to be cut from the long scale phase of the length measurement object and the cutting allowance is larger than the actual measurement length, the length of the product to be cut out is shortened within the allowed width range. It is possible to quickly turn long materials into products without waste.

For the above purpose, the length of the long material is measured before cutting.The length of the long material here means the length that can be cut out into the product.The example shown in Figure 1 is the length of the long material. Then, t is the length of the long material. In the case of a long material whose width is approximately constant over the entire length as in this example, the length of the long material is determined by the size of the product to be cut and the shape of the tip and tail of the long material.

The conventional method for measuring the length of a long piece from the shape of the tip and tail is (1) placing a person near the material to be measured and visually observing a scale plate fixed along the length measurement direction. How to do it, (
2) Fix multiple television cameras and a scale plate near the material to be measured in the 611j length direction (~, photograph the tip and tail of the phase to be measured and the scale plate with the television camera, and visually measure this from a distance with a television monitor. There are several methods, but the former method (1) requires a dedicated person near the object to be measured, and has the disadvantage of being prone to errors and contamination. In 2), it is not possible to monitor the tail end of the material to be measured from a position perpendicular to the measurement direction, and visual measurement error similar to (1) may occur due to visual inspection. It had drawbacks.

The present invention has been made in order to eliminate the drawbacks mentioned above.
Its features include a positioning device for cutting the tip of the material to be measured, a cart carrying a television camera movable in the length measurement direction, a monitor that projects the image of the television camera, and a kernel line that is projected onto the monitor. A length measuring device for a long rolled material includes a cursor line generator and a tail end cutting positioning device consisting of a position detection and display device of the cart.

Hereinafter, the present invention will be explained in detail based on embodiments shown in the drawings.

Figure 2 (a) shows a plan view of the entire length measuring device.
reactor. 1 is a long steel plate that is the material to be measured, 7.8.9 is a tip cutting positioning device, 7 is a gate-shaped mount installed across the long steel plate, and 8 is a finished plate on the long steel plate 1. These are two light beam projectors that project parallel light beams at a width interval, and are installed on a pedestal 7 and can be moved in the width direction of the board. Similarly to 8, 9 is a light beam projector that projects a light beam onto the long rolled plate IQ from a measuring direction, and is fixed so as to be perpendicular to the light beam projected by the light beam projector 8. 2.3.4.5.6.1O111 is a tail end cutting positioning device, 2 is a trolley 30 traveling rail, 4.5.6 is mounted on a trolley 3, 4 is a television camera, and 5 is a The bogie position detector 6 is a bogie drive device. 10 is a television monitor that displays the video signal of the television camera 4; 11 is a cursor line generator that displays a cursor line on the television monitor 10, and the display position can be specified. Reference numeral 12 denotes a truck position indicator that receives a signal from the truck position detector 5 and displays the distance between 9 and 4. In addition, 13 is an operator who operates the above-mentioned apparatus, and also transports the material to be measured l in the direction of arrow A by another means. 14 is a driver's cab.

Figure 2 (B) is an example of the image displayed on the TV monitor 10 in Figure 2 (A2). This is the cursor line that is displayed.

The length measurement operation will be explained in detail below using FIGS. 2(a) and 2(b). First, the operator 13 transports the material to be measured using another means, and aligns the end cut (x'LIt) of the material to be measured with the position of the beam from which the beam projector 9 also emerges.

Set the position of the beam projectors so that the distance between the two parallel beams projected from the two beam projectors 8 or the target product plate is equal to 1. The light rays of the book create two points of intersection, and this point of intersection is ℃
・If the deviation is also on the measurement target material (2), it can be seen that the measurement target material has the size of the target product [1].Therefore, a light beam projector is placed on the conveyance line of the measurement target material in advance. According to 8.9, three light beams are projected and the material to be measured is conveyed from the rear in the incoming direction.At this time, if the two intersections of the light beams land on the material to be measured for the first time, the Recognizing the position as the tip cutting position of the material to be measured 9,
Stop transporting the material to be measured.

Next, the cart 3 is moved and stopped at a position where the tail end of the material to be measured is displayed on the television monitor 10 as shown in (b) of FIG. (B) in FIG. 2 shows the tail end of the material to be measured displayed on the television monitor 10. 16 is a cursor line fixed on the screen, and the television camera 4
corresponds to the optical central axis of Reference numeral 17 is a movable cursor line that intersects with 16 at right angles, and is displayed at intervals corresponding to the preset target width of the finished product. The three cursor lines have two intersections, and based on the same idea as the tip cutting position detection device, the tail end cutting position is determined either by the two intersections of the cursor lines or at the most tail end of the range on the material to be measured. The position is approximately 0.degree. C., and the cart 3 is repositioned so that the nozzle line 16 is aligned with this position.

When alignment is completed, the cart position detector 5 is adjusted to detect the light beam projector 9 and y+-gt+, so the cart position indicator 12 shows only finished products.
Depending on the length, determine the length of the product to be cut into multiple pieces.

In the length measurement of the present invention, one end is aligned with a light beam projected onto the material, and the other end is used to obtain a length signal based on the position of a television camera that captures the light beam.

According to the present invention, it is not necessary for a person who has a measurement sentence of 1j length to measure the length of the driver's cab or L:). It can be reduced in width, etc., compared to the conventional method, the sub-long time or short time, the fall is 1j, the fixed sheath is also the direction 1-shi, and the effect is a dog. In addition, the length of the present invention is determined by the shape of the tip and tail.
There are things that can be put to good use.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of a long material, FIG. 2 (a) is a plan view of an embodiment of the present invention, and FIG. 2 (b) is an explanatory diagram of the method 1) III of the present invention. 】゛Measurement target material 2゛Rail mount of truck 3: TV camera 5 Truck position detector 6, truck drive device
7: Portable gate-shaped frame 9 Light beam projector 10. TV monitor - 11° Kernor line generator 12, trolley # display device

Claims (1)

[Claims] A tool for positioning the tip of a long rolling material, a cart on which a television camera movable in parallel to the length direction of the long rolling material is mounted, a monitor for projecting the image of the television camera, and an image on the monitor. A cursor line generator that projects a cursor line simultaneously with the image of the television camera, and the position i of the trolley! This is a length measuring device for four long rolling mills, which is composed of a detection display device and a tail end cutting positioning device.