SU969471A1 - Apparatus for cutting stack of strips of small-size section rolled stock - Google Patents

Description

(54) DEVICE FOR CUTTING THE PACKAGE OF THE SMALL-SORTED RENT

The invention relates to rolling production and can be used, for example, on small-section mills in the production of finished products in bars of measured length. A device for controlling the cutting of a pack of small-section strips is known, which contains a control scheme for the role of a ganga with a trigger input that is connected to the output of a scissor control circuit 1. This device allows the operator to manually control the movement of the pack of strips to the scissors with the bag stopped at the scissors and separation from the packet of the next bundle of bars. In the production of rolled products in rods of measured length, it is necessary to make the package trimming. Small rolled section dimensions (diameter up to 18 mm) do not end face because of their accuracy and longitudinal stability. When installing a pack of strips on scissors a: i, i.: The shots of the first cut are governed by the condition of limiting the length of the shortest bar in a bundle, which leads to a bundle of non-gauge rolled at the end of the bundle due to the inconsistency of the strip lengths from pack to pack those. to reduce the yield of measured products. The closest to the proposed technical essence and the achieved effect is a device for cutting a package of small-section rolled products containing a roller table control unit, a serially connected key, a pulse counter and a comparison unit, a pulse movement sensor connected to the key, a key block, control input which is connected to the output of the comparison unit, and the outputs - to the inputs of the parallel recording of information in the pulse counter, and the control unit of the scissors, the output of which is connected to the control unit roller conveyor. The device works as follows. A bag made up of a given band of quality is transferred to the scissors and placed on the scissors so that, when the first bundle of rods are separated from the beginning of the pack, the length of the shortest length in the pack is equal to the maximum allowed. This is ensured by introducing into the pulse counter a number equivalent to the distance from the shears to the strip farther from them. The known device allows only a shortening of the length tolerance per bar, but does not increase the output of the finished product in the bar. dimensional length, since with the release of such products the limitation of the length of the shortest bar in the first bundle leads to the appearance of bundles of unmeasured bars at the end of the package, the purpose of the invention is to increase the output npoKJiTa in rods of measured length due to the use of unmeasured rolled steel packs at the end of the package. The goal is achieved by the fact that in a device for cutting a package of small-section rolled products, containing a control unit, a serially connected key, a pulse counter and a comparison unit, an impulse rolling movement sensor connected to the key, a key block whose control input is connected to the output of the unit Compare the geniuses, and the outputs - with the inputs of the parallel recording of information in the counter of impuses, and the scissors control unit. the output of which is connected to ib-iok control. This unit is equipped with a calculation unit 5 coordinates of the start of movement npoKfiTa, a second key block, an inverter, sensors} that have rolled on a roller table, the output of which is connected to the control input of the second key block, to the inerter and to the trigger input of the roller table, also sensor

Nal: and rolled on scissors, single cut and matching circuit, whose inputs are connected to the comparison unit and to the presence of rolled on scissors. and the output - with the control unit scissors - 50

In this case, the output of the sensor for the presence of scissors on the scissors is additionally connected via a one-shot to the shutdown input of the roller control unit, the output of the inverter is connected to the key, and the output of the calculator of the coordinate of the beginning of the rental movement is covered; The second block of keys, k) 5, the comparison block 22 is reset to the zero state, i.e. gradually counts the number of pulses equivalent to the length of the measuring bar. Score

the counter 21 will not count the number of pulses equal to the M number setpoint of the comparator block 23. The output of the last generator 24 is turned off55. The pulse counting by the counters 2O to 21 stops. In this state

counter 20 counted the number b1

Claims (2)

D pulses, which allow the recording of information in the pulse counter. Il fig. 1 shows a block diagram of a device for cutting a package of small-size rolled products; in fig. 2 - the initial position of the strip pack, in FIG. 3, the intermediate position of the strip pack; in fig. 4 - position of the pack of strips after the cut. A device for cutting a package of small-size rolled products contains a roller control unit 1 with roller conveyor 2 with diagrams 3 and 4, a series-connected key 5, a pulse counter b, a comparator block 7, a pulse sensor 8. Rental package 9, key block 10, scissor control block 11, calculating the coordinate of the start of rolling movement, second key block 13, inverter 14, gauge 15 for metal on the roller table, gauge 16 for metal on scissors, one-shot 17, coincidence circuit 18. The computing unit {coordinates of the start of rolling movement consists of a generator 19, two counters 2O and 21, units 22 and 23 of the comparison, a button 24 for turning on the generator and a button 25 for setting the counters to zero. The device operates as follows. In the initial position, before the arrival of the packages on the live rolls, the coordinate in (Fig. 2) of the reference point of the displacement of the package during cutting is calculated. To do this, in the comparison unit 22, the number M is entered, equivalent to the length of the measuring bar, Number Nj-, at the input of the comparison unit 23 corresponds to the distance a between the sensors 15 and 16 of the presence of rolled metal. Button 25 counters 20 and 21. are set to the zero state, then button 24 turns on generator 19, the pulses of which enter counters 2O and 21. The counter 20 times when counting the number of pulses equal to WQ through the pulses continues until t. e. is equivalent to the coordinate b of the reference point of movement when cutting (Fig. 2 Coordinate b marks the point on the path of the package that is removed from the scissors by a distance and times the length of the measuring rod. When the package 9 arrives at the role-Ganges 2, the sensor 15 for rolling the number Nji is entered into the counter 6 through the key block 13. The rolling table control unit 1 is simultaneously turned on and the packet is transported to the scissors. If the end of the packet disappears from the sensor 15, the key 5 and the pulses of the 8 sensors The packet enters the counting input of the counter 6. When the number of pulses equal to M arrives at the input of this counter, it comes to the zero state, which is noted by the comparison block 7, since the setpoint of the latter is set equal to zero. The keys and the counter 6 enter the number WQ corresponding to the length of the measuring bar. In this state, the end of the packet is at a distance of b from the installation location of the sensor 15 (FIG. 3) i.e. at a distance from the axis of the shears, a multiple of the BO length of the gauge rod. From this point on, counter 6 sequentially counts the movements of the end of the packet, equal to B. At the next count of this movement, the sensor 16 is triggered, which finishes the arrival of the rolled material on the scissors. In this situation, after the next operation of the comparison block 7, the coincidence circuit 18 opens, its output signal is turned off by the gang control unit 1, the package is stopped and the scissor control block 11 is turned on. The first bundle of rods is separated from the package. After cutting by the output signal of block 11, the roller table is turned on (the position of the bag is shown in Fig. 4). After the first cut, counter 6 counts the next move of the packet for a distance of one meter and its comparison element generates a command to produce subsequent cuts. The described cycle of operation is repeated until the rental disappears from the zone of operation of the sensor 16. At the same time, through the one-shot 17, the roller table 1 is turned off. The arrival of the next packet of bands of nargangang causes the device to work again in the described mode. The proposed device, when cutting a package of rolled stripes by eliminating one unmeasured cut at the end of the package, provides the condition for increasing the yield of rolled products in bars of measured length. Apparatus of the Invention A device for cutting a package of small-sized rolled products containing a roller table control unit, a serially connected key, a pulse counter and a comparison unit, a pulse rolling movement sensor connected to the key, a key block whose control input is connected to the output of the comparator unit, and the outputs are with inputs of parallel recording of information into a pulse counter, and a scissor control unit, the output of which is connected to a roller control unit, characterized in that, in order to increase the output of the rolled stock in bars of measured length, it is equipped with a unit for calculating the coordinate of the start of rolling, the second key block, an inverter, a gauge of rolling stock on the roller table, the output of which is connected to the control input of the second key block, to the inverter, and the trigger input of the roller table control unit, as well as the sensor the presence of rolling on the scissors, the odovibrator and the coincidence circuit, the inputs of which are connected to the comparison unit and to the sensor of the presence of rolling on the scissors, and the output to the control unit of the scissors, while the output of the sensor on the availability of rolled metal The scissors additionally connect through a single vibrator with the shutdown input of the roller control unit, the output of the inverter is connected to the key, and the output of the calculator of the coordinate of the start of rolling movement is connected via the second key block to the inputs of the parallel recording of information into the pulse counter. Sources of information taken into account in the examination 1. Chekmarev A. P. and others. Rolling on small-section mills. Metallurgists, 1967, p. 352. 2. USSR author's certificate number 529020, cl. B 2311 15/12, 1976 (prototype). 7 hl About uo / u x x / / x  . Jl, Tsitp-L well "... I1" RI MVI AND 1ISHI ( (R ( ( "at : 4t- € gtOn at ttt 7 P - ± t . .Jp 21 five FIG. Ttl iU 21 / J n h fig g srigM