SU801991A1 - Apparatus for cutting out bar stacks - Google Patents

Description

one

The invention relates to the automation of rolling production and can be used on crimping and large-section mills during the cutting of long rolled packages on stationary scissors.

A device for controlling the cutting of a package with stationary scissors is known, comprising a front-end position meter in the form of a series of front-end position sensors, a counter, a comparison element connected to them, a decoder, a generator of pulses controlled by the decoder, and a coincidence circuit 1. This device allows to reduce metal losses due to cutting of the first bundle, in which the length of the shortest bar is longer than the minimum value. A disadvantage of this device is that it does not eliminate metal losses during the last cut.

A device for cutting rolled bars containing a length meter, interconnected computer and blocks controlling the abutment, scissors and feed, L) 1 Ganges 2. The disadvantage of this device is

that it does not allow to eliminate metal losses if the deviations of the lengths of rolls in the package exceed the difference between the nominal and minimum length of the workpiece.

In addition, the lack of control over the actual length of the cut blanks or the length of the remaining part of the rolls and the correction of the cutting plan from this data leads to the appearance of waste due to the accumulation of errors during the cutting.

The aim of the invention is to increase the yield of rolled metal at. Cutting package by rolling out various lengths.

The goal is achieved by the fact that the device is equipped with a control unit for the selective feed mechanism connected to the feed roller control unit and to the computer, the program selection block cutting, connected to

25 with a control unit for the mechanism for selectively feeding a roll and with a computer, and a unit of coincidence connected to the meter, gpina with the control unit scissors and

Claims (2)

30 block selection program rlskgyu. The drawing shows a block diagram of the device. The device for cutting long-rolled products contains a length of 1, as well as a computer 2, a block 3 for controlling the stop 4, a block 5 for controlling the scissors 6 and a block 7 for controlling the feed roller 8, connected to each other, the control block 9 of the selective feed mechanism 10, connected to the control unit of the roller table and to the computer, block 11 to select the program, cutting to the control unit of the selective feed mechanism and to the computer, block 12, connected to the length meter, to the control unit the detection unit with scissors and the choice of the program is disclosed. The device works as follows. Before starting work, the calculator nun5 machine 2 is entered with data on the nominal length of the workpiece Sc, the minimum length of the workpiece E- | y, and the permissible error of cutting L. Based on the initial data of the computer, it gives a command to the control unit 3, focusing on its installation 4 to the distance ЕН from the flat cut of the scissors 6 and determines the limits of the range of the shortest lengths of rolls M) and maxi which can be cut without residue on the workpiece within from CH to Cmlfi and transmits this data to block 11, the calculation of the lengths of the residuals p is determined by the formulas H MIN 1 min-A) e, -4- & fe. H MIN After setting the stop 4 at a predetermined distance c from the scissors 6, a package of the roll of the roller table 8 is fed for cutting. At the moment of cutting the metal, the lengths of the remaining parts of the rolls, measured by the meter 1, are transmitted through the block of matches 12 to the block 11 of the program selection cut, which monitors the arrival of the rear ends of the rolls in the calculated length interval. As soon as during the next cut one of the several rear ends of the rolls appears in the calculated length interval, the prog selection unit 11 transmits a command to the 6JIOK 9 control of the selective feed for the mechanism to hold on the selective feed of the ends of the rolls in front of the scissors 6 by lifting them over the roller table 9 and sends it to computer their actual lengths. The rest of the peals continue to cut into blanks of nominal length. After entering into the calculated interval the lengths of the back ends of all rolls; The cutting program selection unit 11 instructs the computer to change the cutting program. The computer determines the cutting plan of each residue, the sequence of cutting, and issues commands to the control unit 3 by the abutment 4 and to the control unit of the selective feed mechanism. After the last residue has been cut, the computer gives a command to block 3 to set the stop 4 to its original position and the device is ready to cut the next package of rolls. Thus, the device allows to increase the yield of rolled metal when cutting a package of rolls of different lengths. The invention The device for cutting packages of long products, containing a length meter, interconnected computer and blocks controlling the abutment, scissors and feed roller, that is, so as to increase the yield of the package when cutting rolls of different lengths, it is equipped with a control unit for the mechanism of selective feeding of the roll, connected to the control unit of the feeding roller table and computer, block of program selection, connected to the control unit ohm selective feeding of the roll and with the computing machine, and a block of matches, connected to the meter, with the scissors control unit and with the program selection block. Sources of information taken into account in the examination 1. The author's certificate of the USSR 529020, cl. On 23 D 15/12, 1973. 2. The author's certificate of the USSR 223725, cl. B 21 B 37/00, 1966. If 1 -f