JPS5829531A - Punching device for running steel plate - Google Patents

Abstract

PURPOSE:To punch a steel plate which runs at a high speed into sample parts, etc., by supporting a couple of upper and lower punch devices and the steel plate in parallel, and allowing the punching devices to operate at the same speed with the steel plate. CONSTITUTION:A punch 2-1 and a die 2-2 are arranged across the line of a running steel plate 1, and a punching device 2 is supported by a shaft 5 which couples a couple of left and right crank mechanisms 3-1 and 3-2 together. The speed of the steel plate 1 is measured by a measuring roll 8 and a pulse transmitter 9, and the measurement signal is inputted to a digital direct servo 10; and the horizontal speed of the side of the punching device 2 is counted by a pulse transmitter 11 coupled with a driving motor 7 and inputted to the digital direct servo 10. Those signals are inputted to a thyristor board 12 to control the speed of the driving motor 7.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for punching parts such as samples from a steel plate traveling at high speed.

As is well known, in order to collect samples for hardness and material testing of strip-shaped copper plates during rolling, conventional methods have been to perform crop sampling, or to stop the line and sample from the finished product. It is generally accepted as No. 1. However, being able to obtain samples of the necessary parts during sheet threading in the 9th period is a disadvantage in terms of productivity and speed of JCII work, but in reality, the high speed running of steel sheets causes problems such as those mentioned above. The reality is that sampling methods are being adopted11.

Conventionally, as a cutting method for a steel plate during operation, for example, punching a product or cutting the steel plate in the width direction is known, but in the former case, the traveling speed of the steel plate is extremely slow, or the punching is done instantaneously. Mainly those that stop at
In the latter case, even if the speed of the steel plate is high, the steel plate is cut in the longitudinal direction, and 1υ is one point, so the device and control are extremely easy to use.

However, since the sample that is the subject of "This Issuance" has a certain area, it is required that the cutting part be of a certain length in the longitudinal direction of the line, and that the speed be the same in all parts. Further, as a premise, the speed of the steel plate and the horizontal speed of the punching device must match at the time of punching.

As a way to solve this problem, it has been proposed, for example, to move the punching device in accordance with the speed of the steel plate during high-speed travel, but the device would be large and complex, and a large number of samples would be cut into sections similar to It is difficult and impractical to collect from

In view of the above circumstances, and as a result of various studies, the present invention has been developed by arranging a pair of punching tools above and below the steel plate running line, facing each other, and using two crank mechanisms to keep the punching tools horizontally ( This problem was solved by supporting the steel plate parallel to the steel plate and operating the crank mechanism using a control device that controls the speed of the steel plate to synchronize with the plate speed. In order to make the equipment more compact, the punching device is placed on vertically facing cranks, and the punching process is completed during one rotation of the circular motion of the crank. and its control are combined with a crank mechanism to increase the speed in the punching area during one revolution, and to control the punching position with high precision. .

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

FIG. 1 shows an overall diagram including a control system of the apparatus according to the present invention.A punching machine 2. That is, a punch 2-] is placed on one side, and a vC die 2-2 is placed on the other side.

As shown in FIG. 2, this punching machine 2 is supported by a shaft 5 connecting a pair of left and right crank mechanisms 3-1.3-2. That is, the shaft 5 is connected to the pair of crank mechanisms 3-1.3.
-2, and always parallel to the steel plate 1 (in the drawing, it is horizontal).Also, the other rule 1 of the punching machine 2 is exactly the same (4-1, 4-2), and both 2- ], 2-3-2 are arranged so as to coincide with each other during punching.0 The punching device 2 supported by such a structure performs a rotational movement as shown in FIG. Points P, q,
r also has its own locus circle center OI + 02 + 03, and the angle θ1. θ2° and θ3 are all equal, and the circumferential speed V is also equal. Such a crank mechanism 3-1,
3-2.4-1 and 4-2 are connected to a drive motor 7 via a speed reducer 6. (Fig. 1) On the other hand, the speed of one steel plate is measured by the measuring roll 8 and the pulse transmitter 9 connected to it, and this signal becomes the input to the digital direct servo 10, and the The horizontal speed on the punching machine side is driven by the drive motor 7.
It is counted by a pulse generator 11 connected to the pulse generator 11, and is also input to the digital direct servo lO. These signals are supplied to the digital regulator 10-1. It enters the thyristor board 4-12 via the analog regulator l0-2, and controls the speed of the drive motor 7.

The actual operation is as shown in FIG.
] is waiting at the top row, and dice 2-2 is waiting at the bottom row, and is accelerated at a position of ]6o° from the start, ], 6
The copper plate speed and the horizontal speed of the puncher 2 match between 00° and 200°. In other words, start punching from 16o0 and cut to 180
The punching is completed at 200°.

The present invention has such an apparatus configuration, and has an extremely large industrial effect because sampling can be smoothly performed by punching from a copper plate running at high speed.

Although the present invention has been described with reference to an example of sampling operation, it goes without saying that it is also effective in punching out products.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram of the entire apparatus including the control system according to the present invention, Fig. 2 is an enlarged view of the main parts of the figure, Fig. 3 is a diagram showing the locus of the punching machine and the speed relationship of each part, FIG. 4 is an explanatory diagram of the operation of the punching machine. ]...... Steel plate 2... Punching machine 3-], 3-2... Crank mechanism 4--, 4
-2 5...Shaft 6......Reducer gear......Drive motor] -〇... -Digital direct servo application
People Nippon Steel Corporation Figure 1-1 Prisoner Figure 2

Claims (1)

[Claims] A pair of upper and lower punching machines are arranged parallel to the running line of the steel plate, and are supported by shafts connected between two crank mechanisms so as to be always parallel to the steel plate. A device for punching from a dirty steel plate, characterized in that it is equipped with a control device that controls the speed to match the speed of the steel plate.