SU1726166A1 - Article measure-cutting system - Google Patents

Abstract

The invention relates to the automation of metallurgical processes, in particular, equipment for the testing of long products by cutting to measured lengths. The purpose of the invention is to improve the quality of finished products. Quality improvement is achieved by changing the cutting plan when a defect is detected. In the case of the remainder of the product beyond the cutting axis of the scissors less than the minimum allowable measuring length, first cut off the minimum length, and then the remainder (more than the minimum) with the orientation of the defect at its end. If the length of the residue beyond the cutting axis of the scissors is greater than the minimum allowable measuring length, then the piece of the product to the defect is divided in half with the orientation of the defect also at its end. 1 il.

Description

The invention relates to the automation of metallurgical processes, in particular to equipment for cutting products, and can be used to control the cutting mechanisms of a long product.

The purpose of the invention is to improve the quality of the finished product.

The drawing shows a block diagram of the system of dimensional cutting of the product.

The system contains scissors 1 for cutting the measured lengths of the endless product 2 connected to the first output of the position regulator 3. The sensor 4 for moving the product 2. mechanically coupled to the follower roller 5 is connected to the input of the converter 6 of the pulse train, the output of which is connected to the third input of the controller 3 and the input of the divider 7 pulse frequency, the output of which through the first element And 8 is connected to the second

the input of the first counter 9 and directly to the third input of the imaging unit 10 code. The first input of the controller 3 through the selector 11 is connected to the output of the first unit 12 code, the second group input of the selector 11 is connected to the group output of the first counter 9, the third input of the selector 11 is connected to the first input of the first element IL 13 and the input of the driver 14 pulses the input of the second counter 15, the first input element And 8 and is connected to the first output of the first trigger 16, to the first input of which is connected the sensor 17 of the defect. The second output of the regulator 3 is connected to the first input of the generator 10, to the second input of the second counter 15, through the delay element 18 to the second input of the OR 13 element, and through the delay element 19 to the first input of the second OR element 20. The outputs of the OR 13 and 20 are connected respectively to the second input of the positioner controller 3 and to the third input of the counter 9, to the fourth input of which the first output of the driver 10 of the code is connected. The output of the pulse former 14 is connected to the second input of the element OR 20. The second unit 21 through the third group element OR 22 is connected to the first input of the counter 9, the second group input of the element OR 22 is connected to the output of the third unit 23, the second output of the former 10 is connected to the first the input of the comparison element 24, to the second input of which the fourth setting device 25 is connected. The output of the comparison element 24 is connected to the first input of the second trigger 26 and the second input of the second element 27, the output of which is connected to the fourth input of the controller a 3, the second output of which is also connected to the second input of the trigger 26 and to the second input of the third element I 28. The first (direct) output of the trigger 26 is connected to the first input of the fifth element I 29, the second (inverse) output of the trigger 26 is connected to the first inputs of the sixth 30 and fourth 31 elements I. The second input of the element And 30 is connected to the output of the pulse shaper 14, and the output is connected to the third input of the element OR 13, the second input of the element And 31 is connected to the first output of the trigger 16. The output of the element 28 through the fourth element OR 32 is connected to the second input. rigger 16, the second input of the OR gate 32 is connected to the output of the counter 15, the second input of AND gate 29 is connected to the output of the pulse shaper 14; and its output is connected to the second input of the coder 10 of the code, the output of element I 31 is connected to the first input of the third trigger 33, the second input of which is connected to the second (inverse) output of the trigger 16. The first (direct) and second (inverse) outputs of the trigger 33 are connected to the control inputs of the set points, respectively, 23 and 21, and the first (direct) output — also to the first inputs of the And 27 and 28 elements.

The controller 3 is structurally a serially connected counter 34, an element OR 35 and a scissors control unit 36.

The outputs of block 36 and counter 34 are the first and second outputs of controller 3, respectively. The D input, V input, T input (subtracting) of counter 34 and the second input of the OR 35 element are the first, second, third and fourth inputs of controller 3, respectively,

The shaper 10 code contains the trigger 37, the generator 38 pulses, the element And 39, the counter 40, the element And 41 and the element OR 42. The output of the counter 40 is connected to the second

the trigger input 37, the first output of the latter and the output of the generator 38 through elements AND 39 and OR 42 are connected to the second input of the counter 40, the third input of which is combined with the second input of the element AND 41, and connected to the second output of the trigger 37. The first input of the counter 40, the first the trigger input 37 and the first input element AND 41 are respectively the first, second and

the third inputs, and the output element And 39 and the second output of the counter 40 - the first and second outputs of the imaging unit 10.

The selector 11 constructively includes AND 43 and 44 group elements, outputs connected respectively to the first and second group of inputs of the group element OR 45, the output of which is the output of the selector 11, and the first and second inputs of the last element are group

the inputs of the elements And 43 and 44, and the third entrance - their destroying (prohibiting) inputs.

The defect sensor 17 is mounted from the cutting axis of the scissors 1 in the opposite direction to the movement of the product.

2 apart

oi min, „, max IA

/ LM CC-. LM, (1)

where LMMMH, LMM3KC.-dimensional, respectively, the minimum and maximum length of the product. Moreover, in practice, their values are related to

. maxx oi LM tl-M

P) 8 General case the length of the product for the axis

cutting scissors (in the direction of movement of 5 deli 2)

0 l LMM3KC, (3)

and the distance from the defect 46 of the product 2 to the cutting axis of the shears 1 is equal. 1m.

The system works as follows.

0 In the initial state (conditionally accepted for the convenience of examining the proceeding processes), in controller 3, the output of the counter 34 is given a command to the Measuring cut, by signal of which:

5 - the unit 36 starts the shears 1, cutting off the finished product of a certain length (determined by the task recorded from the output of the setting device 12 at the input D to the counter 34);

0 - acting through the delay element 18 and the OR element 13 on the V-input of the counter 34, recording in nego information from the output of the selector 11 is provided;

- through the delay elements 19 and OR 20 to the V input of counter 9, a constant is written into it from the output of the element OR 22;

-the counter 40 is set to zero in the code generator 10;

-the initial state of the trigger 26, in which the elements And 30 and 31 are open, and the elements 28 and 29 are closed.

The triggers 16 and 33 and the trigger 37 of the code generator 10 are in the initial state, in which:

- in selector 11, element And 43 is open, and element And 42 is closed;

counter 15 and trigger 33 are held

in the initial zero state;

- element 8 is open, and elements 27 and 31 are closed;

the sensor 21 is on, and the setting device 23 is turned off;

- in the shaper 10 of the code, the AND 39 element is closed (the pulses generated by the generator 38 do not pass to the input of the counter 40).

The system will first consider the presence of a defect 46 on the product 2.

Moving along the process line (indicated by the arrow in the drawing), the product 2 provides with the help of the follower roller 5 and the sensor 4 the output of a sequence of pulses proportional (in quantity) to the amount of movement of the product. The pulse sequence from sensor 4, passed through the pulse sequence conversion unit 6 (the price of each pulse is reduced to a typical unit of length, for example, 1 mm, 1 cm. 1 dm, etc.), goes to regulator 3 to read out the input of the counter 34 and through the divider 7 (two) and the open element And 8 passes to the subtractive input of the counter 9 and to the third input of the code generator 10 (summing up the input of the counter 40).

In this case (when there is no defect 46 on the product 2), the signal Res from the output of the counter 34 of the regulator 3 will record information on the measured length from the output of the meter

sensor 12, and in counter 9 - constant

master output 21.

The pulses of length of unit 2 entering the controller 3 to the subtracting input of counter 34 provide for the subtraction of previously recorded information before zeroing, at which the Res command will be issued and the above-mentioned auxiliary operations will be performed.,

In the counter 40 of the driver 10, information I / 2 is generated between adjacent commands from the output of the counter 34.

In counter 9, in this case, a task is generated for counter 34 in the event that the first product is cut off when the sensor 17 detects a defect 46 of product 2.

This assignment is determined from the following prerequisites. At the time of detection

By the sensor 17 of the defect 46, the length of the product from the defect (i.e., from the sensor 17) to the front end of the product, located behind the cutting axis of the scissors 1, is generally equal to the sum (+ I). According to the basic algorithm, this length should be cut in half, thereby ensuring the length of each product.

U-it

. 2

and the orientation of the defect at the end of the finished product (second).

Since at the time of detection of the defect 46, the information in the counter 34 should be replaced by a new task (instead of dimensional cutting, it is necessary to cut the product according to the Defect signal) and the product length beyond the cutting axis of the scissors is I, obviously, the task for cutting the product by the Defect signal will be

U +, -u-i

22

(6)

This task is generated by counter 9.

The operation of the system at the signal Defect will be considered for two cases depending on the length I of the product beyond the axis of the scissors, namely:

A) 1 1MMIN

B) K 1MMIN.

Case A.

In this situation, the trigger 26 is in state 1, because at the moment of equality of the codes on both inputs, the comparison element 24 is triggered. Its output signal acts on the first input of the trigger 26, however, it does not pass through the element 27, since the signal O from the trigger 16 has it closed (the Defect signal has not yet arrived).

At state 1 of trigger 26, element AND 29 is open, elements 30 and 31 are closed.

Upon receipt of a signal, Defect from sensor 17, trigger 16 is set to a state in which:

-in the separator 11, the AND 43 group element is closed and the AND 44 group element is opened;

- by means of the element OR 13 in the counter 34 of the regulator 3 the information from the counter 9 is recorded (the task for cutting the first product of two of the same length by the signal Defect);

- element 8 is closed;

-from the output signal 1 of the trigger 16, the shaper 14 is started, the short signal of which, having passed through the OR element 20, records the constant 1d / 2 into the counter 9 from the output of the setpoint 21;

- the prohibition of keeping the counter 15 in the initial zero state is removed;

by the signal from the output of the pulse shaper 14 through the open element AND 29, the flip-flop 37 is set to state 1.

In the shaper 10, the signal 1 from the output of the trigger 37 opens the element I 39, providing with the aid of the pulses of the generator 38, overwriting the information from the counter 40 (length I / 2) into the counter 9, Upon completion of the census of this information with the overflow pulse from the output of the counter 40, returns to its original state, closing the element AND 39 to pass the pulses of the generator 38.

Thus, in case A, after detection by sensor 17 of defect 46 in product 2, in counter 34 there will be information (6), and in counter 9, information (5).

The incoming pulses of product length 2 to the subtracting input of counter 34 provide for its zeroing and outputting the Res signal (the first after the arrival of the Defect signal), which:

- using the block 36 and scissors 1 causes the cutting off of the first finished product by the signal Defect;

using elements 18 of the delay and OR 13 writes information (5) into the counter 34 of the counter 9;

- with the help of delay elements 19 and OR 20, a constant is written to counter 9 from an output of setpoint 21;

- counter 15 records the number

In shaper 1.0, counter 40 is reset to its original zero state.

Continuing to arrive at the subtracting input of the counter 34, the pulses of the length of product 2 provide for zeroing it and issuing the second command Res on the signal Defect, according to which:

-. with the help of the block 36 of the regulator 3 and scissors 1, cutting off the second finished product with a length of (5) is provided;

-the counter 15 reads the second unit (the second finished product after the arrival of the Defect signal), at which, by the overflow signal of the counter 1.5, the trigger

16 returns to the initial state, providing switching of the And 43, 44 and 8 elements to the dimensional cutting of the product;

- counter 40 is zeroed;

-in counter 34 records information about the measured length of the product from the output of the setting device 12;

-in counter 9 is recorded constant from the output of the setter 2.1.

At this cutting of the product by the signal Defect for the case A, the measured cutting of the product 2 is completed and started according to the task from the setting device 12.

Case B.

In this case, the trigger 26 is in the initial zero state (the value of the code from the output of the counter 40 is less than the code from the output of the setpoint 25), in which the elements 30, 31 and 29 are open.

The incoming signal from the sender 17 Defect sets the trigger 16 to the state where;

- in the selector 11, the element And 43 is closed, and the element And 44 opens, connected to the D-input of the counter 34, the output of the counter 9;

- element 8 is closed;

The signal 1 from the first output of the trigger 16 passes through the open element I 31 and puts the trigger 33 into the state

- pulse generator 14 is started.

The trigger 33, which is in state 1, ensures that the setting device 23 is turned on and the control device 21 is switched off; elements AND 27 and 28 are opened.

Received through the element OR 20 from the output of the driver 14, the signal writes to the counter 9 of the information from the output of the setting device 23, i.e. Ld This code enters through the selector 11 at the D input of counter 34 and is written into it by means of a pulse from the output of shaper 14 through the open element AND 30 and the element OR 13.

Continuing pulses of movement of the product 2 from the output of the converter 6 provide the subtraction in the counter 34 and summation in the counter 40.

At the time of comparing the codes, at both inputs of the comparison element 24, a signal is generated at its output, which sets the trigger 26 into a state passed successively through the open element AND

27 and through the element OR 35, by means of the block 36, includes scissors 1 for cutting the product into a length.

At the time the comparison signal is output from the output of element 24, the counter 34 will have information

| , | | MIN 1-D + I LM,

which is the task for cutting the second finished product at the Defect signal in case B.

After the counter 34 completely reads this code, the Res command from its output is:

- through the element OR 35 and the block 36 starts the scissors 1;

- sets trigger 26 to the initial zero state;

- resets the state 40 to the counter;

- pass through the open element and

28 and the OR element 32 returns the trigger 16 to the initial zero state, in which the selector 12 is connected to the D input of the counter 34 via the selector 11:

with the help of delay elements 18 and the element OR 13 information is recorded into the counter 34 from the setting device 1.2 about the measured length of the product;

By returning the trigger 16 to the initial state, the trigger 33 is also set to the zero state, in which the setpoint adjusters 21 and 23 are switched and the elements 27 and 28 are closed;

by means of the delay elements 19 and the element OR 20, information is recorded into the counter 9 from the setter 21.

The listed operations prepare the system for the mode of dimensional cutting of the product, finishing cutting at the Defect signal on the occasion of B.

The use of a dimensional cutting system allows the cutting of an infinite product into specified dimensional lengths if there is no defect on the product; when a defect is found on a product, implement two algorithms for cutting, depending on the size of the remainder of the product beyond the cutting axis of the scissors, ensuring in both cases the orientation of the defect at the end of the product, namely:

In case A, the rest of the product is divided into two equal parts before the defect;

In case B, the minimum length is cut off from this residue, and then the remaining length to the defect.

This achieves a simplified control of the scissors without increasing their rate of return movement and improves the quality of the products.

Claims (1)

Invention Formula The system of dimensional cutting of the product, containing the scissor positioner, the first input connected to the output of the selector, the first and second group inputs of which are connected to the group outputs of the first code setting device and the first counter, respectively, the second code setting device, a product movement sensor mechanically connected to the following roller , product defect sensor, first trigger, connected by a direct output to interconnected first inputs of the first OR element, first AND element, second counter, to the input of the importer pulses and to the third input of the selector, the second input of the first element OR is connected to the first delay element, the output of the first element OR is connected to the second input of the scissor adjuster, the third input of the last connected via a pulse train converter to the product displacement sensor and through a pulse frequency divider to the second input of the first element AND, the output of which is connected to the second input of the first counter, the third and fourth inputs of which are connected to the output of the second element OR, and to the first output of the code generator respectively, the first input of the second element OR is connected via the second delay element to the second inputs of the second counter and the second trigger connected to each other, to the second output of the positioning switch st Torah .5 to the input of the first delay element and the first input of the code generator, characterized in that, in order to improve the quality of the products, the third and fourth setting devices, the third trigger, 0 group third and fourth elements OR, second, third, fourth, fifth and sixth elements AND, comparison code element, moreover, the defect sensor is connected to the first input of the first trigger, group 5, the outputs of the second and third setters are connected to the group inputs of the third OR element, the output of which is connected to the first input of the first counter, the input of the second and the input of the third setting device are connected respectively to the direct and inverse outputs of the third trigger, the direct output of which is also connected to the first inputs the second and third elements And, the first input of the third trigger is connected to the output 5 of the fourth element And, the second input - with the inverse output of the first trigger; the second input of the second element AND is combined with the first. output of the second trigger and is connected to the output of the comparison code element, and the output 0 of the second element AND to the fourth input of the scissor positioner, the first input of the code comparison element is connected to the second output of the code generator, the second input is connected to the fourth setpoint device, direct 5, the output of the second trigger and the output of the pulse driver are connected respectively to the first and second inputs of the fifth element I, the output connected to the second input of the code generator, the third 0 input of which is connected to the output of the divided pulse frequency, the inverse output of the second trigger is connected to the first inputs of the fourth and sixth elements And connected to each other, the second input 5 of the fourth AND element is connected to the direct output of the first trigger, the second input of the sixth AND element is connected to the output of the pulse former, and the output is connected to the third input of the first OR element, the second counter output is connected to the second input of the fourth element OR, the input of the first trigger, the second input of the third to the first input of which is connected to the output of the element AND is connected to the second output of the third element AND, and the output to the second position regulator. J