SU993041A1 - Device for measuring total weight of objects as they arrive - Google Patents

Description

The invention relates to weighing equipment, in particular to devices for determining the theoretical weight of objects, and is intended mainly for taking into account the weight of the metal in the process of its entry into the flow of high, productive rolling mills,

A device for determining the theoretical weight of sheet metal is known, comprising a binary-decimal combinational parallel adder, a switch, a theoretical setter of the theoretical weight of a unit of length of the rolled product, a computing unit, a task register, a result register / sensor of the rental unit, and a recording unit C1.

However, the known device does not have the necessary accuracy and has a low reliability due to the large amount of equipment and irrational structure.

The closest to the proposed technical entity is a device for recording the total weight of objects as they arrive, so. Holding the object position sensor, the metering unit and the C2T display unit connected to its output. The disadvantage of such a device is the low accuracy of the total weight metering of objects.

Weight accounting is carried out after establishing its belonging to the statistical range, which is set. They poured in advance from a certain disability and are stored in memory cells of the discriminator. When storing the average value of an object with a discreteness of 1 ton, 19 groups of memory elements are needed, with a resolution of 0.1 t 190 groups of memory elements, etc. In this case, the weight value of each object will be entered into the metering unit with an error of 1 ton and 0.1 tons, respectively, and the metering cost of products in a batch of 100 pieces will be 100 tons and 10 tons, respectively.

20

The purpose of the invention is to account for accuracy by reducing the theoretical total weight of all objects to their actual weight.

The goal is achieved by

25 that the device sets the weight unit of a batch of objects, sets the number of objects 8 of the batch, the code converter and the controllable divider, and the position sensor of the object and the weight setpoint of the batch of objects are connected to the inputs of the converter, and the set number of objects is connected to the inputs of the controllable divider in the batch and the output of the code converter, and to the input of the metering block - the output of the controlled, divider. FIG. 1 shows a block diagram of the device} in FIG. 2 shows an embodiment of the device code converter. The device contains unit 1 for the weight of a batch of objects, for example, ingots of one heat, unit 2 for the number of these objects in a batch, object position 3 sensors, 4 parallel code-to-number converter - pulse code, divider 5, metering unit 6 and display unit 7. The controlled divider 5, when pulses from converter 4 are received at its input for each number of incoming pulses, equal to the number of objects in the batch (specified in unit 2), generates at its output a pulse signal corresponding to an ingot weight unit, for example, 1 ton, UOKG, 10 kg and so on . Managed divider 5 can be built from counter 8, comparison circuit 9 and shaper 10. Comparison circuit 8 can be performed on AND-OR-NOT elements, the first inputs of which are supplied with the value code from the setting device 2, and the second - the value code the numbers written to counter 8. Transducer 4 can be configured as shown in FIG. 1, or according to the scheme shown in FIG. 2 In the first case, the converter consists of a counter 11, a circuit 12, a trigger 13, a shaper 14, a reset signal, and a controlled pulse generator 15. The comparison circuit 12 can be executed (as well as in block 5; on the AND-OR-NOT elements, the first inputs of which receive a code from the weight setpoint 1, and the second signals from the outputs of the corresponding bits of its counter 11 The BLOCK 4 shown in Fig. 2 contains a counter 16 and a generator of pulses 17. The signal from sensor 3 in counter 16 determines the value of the batch weight (in necessary weight units) from sensor .1 in the additional code and the signal from the output of counter 16 starts the generator 17, the pulses from which are fed to the counting input of the counter 16 to add and .p output of block 4. When counter 1G overflows (the counter is set to state O), the signal from its output stops from the generator 17. Accounting block 6 calculates the weight of rolled ingots for the reference period (per hour, shift, etc.) and registers this data for the past (reporting periods. The accounting unit 6 can be performed according to well-known schemes on counters with digital printing devices. The display unit 7 is designed to display operational information about the mill production on digital boards - at the workplaces of the mill operators and at the workshop O taolo - for collective use. The device (Fig. 1 works as follows. In block 1, for example, with weighing devices, the actual melting weight of the ingots to be rolled is set; in block 2, the number of ingots in a given melt. With the ingot passing around sensor 3 (arriving at processing or processed by the signal from the sensor 3, the trigger 13 is set to state .1, and by a signal from its output, the driver 14 generates a pulse to reset the counter 11 to the zero state and start the pulse generator 15. The pulses from the generator output 15 begin to flow to the counting the input of the counter 11 for addition and output of the block 4. When the counter reaches 11, the value of the block 1 is set by the signal from the comparison circuit 12, the trigger 13 is set to O, the output of which stops the generator 15. Thus, for each pulse from the sensor 3, block 4 generates at its output a number of pulses equal to the specified batch weight code (from block 1) in the required weight units.Pulses from the output of converter 4 are fed to block 5 at the counting input of its counter 8. If the counter 8 reads from the first at During circuit 9, a signal appears at the output of the latter, corresponding to the value of the unit of weight of the ingot (for example, t kg, etc.). This signal through the imaging unit 10 is fed to the output of block 5 for summation. In block 6 of metering. By the same signal, the counter 8 is reset and starts counting the number of pulses (which continued to arrive from block 4) until the next match with the task at the first input of the circuit Nfij 9, which again produces the output signal of block 5. the divider 5 from its output in the block 6 of the account receives the number of pulses equal to the value of the weight of the ingot in the given units of weight (t, kg, etc.). When the ingot weight is not an integer, in the counter 8 there remains information corresponding to the fractional part of the unit of weight, which is taken into account when determining the weight of the next ingot in block 5. (the calculation of the unit of weight begins not with zero, but with the Ostashdegos in the counter 8 values.

After the last ingot of this melt is passed, the amount obtained in block 6 will be equal to the actual weight of the ingots of this melt.

Weight accounting, based on recalculation of the actual float weight of the ingots to be rolled to the weight of each ingot when it enters the mill stream, makes it possible to obtain information about the output both per shift and work-in-progress during the shift with sufficient accuracy since the accounting error depends only from the discharge grid of the generator and integrator (the choice of discreteness of the records of the melting parameters is not limited by anything),

The proposed device was used in the automatic recording and recording system of rolling mills to account for the metal consumption for which working documentation was developed, and according to this, an experimental industrial sample was made, which was recommended for operational tests following laboratory testing.

The economic effect from the implementation of the invention is due to the influence of the accuracy of control.

Claims (2)

1. USSR author's certificate number 647546, cl. G 01 G 23/36, 1977. 2. USSR Author's Certificate No. 509794, cl. G 01 G 23/36, 1974 (prototype). Fi.