SU691901A1 - Apparatus for counting a pre-set number of yarn turns - Google Patents

Description

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 The invention relates to the field of automation and computer technology, in particular, to electronic program-controlled meters, and can be used to automatically stop the machine after performing a given progr / amma, in particular, to control the speed of the warping coil of the sectional warping machine.

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A device for counting the number of turns contains blocks of digital drums with digital rollers, discs and ratcheting devices, and the discs are equipped with cardioned eccentrics for tuning to a given number of revolutions} -. At present, such meters are installed on sectional warping machines.

The disadvantage of these counters is the lack of reversal and shutdown of a given program, as well as low operational reliability due to the complexity of the design.

The closest to the technical essence and the achieved result to the pre-expansion is a device for counting the number of turns, containing a program block, an analysis block, a decoder, a display block, a counter, a starting position setting block: I and a control block 2.

The disadvantage of this device is the lack of accuracy.

The purpose of the invention is to increase the accuracy of the device, I set the goal by achieving the full reversal counter, and the turnover sensor, operating mode selection unit, AND element are entered into the device, and the speed sensor is connected to the sodam of the mode selection unit. operation, the outputs of which are connected to the two inputs of the counter, to one of the inputs of the element And, and to the two inputs of the control unit, the output of which is connected to the other input of the element And, the output of which is connected to the third meter, the output of the control unit and to the counting ode counter, a third input coupled to an initial position setting unit, and an output - to the input of the decoder which output is connected to the input of the indication unit and to one of WMOs rows analysis unit, the other input of which is connected to a programming unit, and an output from the actuator. The invention is illustrated in the drawing, which shows a block-heme device. The device contains a rotational speed sensor 1, mechanically connected with the shaft of the machine warping reel, operation operation selection unit 2, control unit 3, element I.4, reversible counter 5, decoder 6, display unit 7, program block 8, analysis unit 9, the actuating element 10 and the initial position setting unit 11. Counter 5 is made in the form of a four-input binary reversible counter, and the control unit 3 is in the form of two static A5 triggers. The device works as follows. Speed sensor 1 generates a sequence of signals of three types: the add signal, the subtract signal and the counting signal. The signals for selecting the operating mode of the counter 5 (addition or subtraction) are transmitted simultaneously to the mode selection unit 2 and the control unit 3. Unit 2 ensures that the required operating mode of the counter 5 is completed. Block 3 (in the particular case can be implemented as a two-input inhibit scheme with output delay ) ensures the passage of the counting signal through the AND 4 element to the counting input of counter 5. If the previous one, the signal from sensor 1 was the signal for selecting the operating mode of counter 5 transmitted from the AND 4 element, the counting signal simultaneously turns off the unit control 3, which eliminates the possibility of a false triggering of the device with repeated receipt of a counting signal. The operation of sensor 1 is based on the mandatory alternation of the counting signal and any of the operating mode selection signals. As the counter 5 is filled with counting signals, its state through the decoder 6 is displayed in the display unit 7, simultaneously the number recorded by the counter 5 is compared with the number defining the task of the necessary number of turns 6 1 cov coming from the program unit 8. If these signals coincide in the analysis block 9, the latter issues a signal on the actuating element 1O, ensuring the termination of the winding process. The installation of the counter 5 in the initial state is effected upon receipt of a signal from the initial position setting unit 11. During the winding process, if any of the threads breaks, it is necessary due to the technological conditions to ensure that all the threads are rewound from the spool to eliminate the breaks. In this case, the rotation of the warp reversal is reversed. Under conditions of normal machine operation (winding mode), the signal from sensor 1 is received in the following sequence: addition signal, counting signal, subtraction signal. The first signal through block 2 provides the execution of the add mode, cherbz block 3 and element 4 prepares the possibility of passing the following counting signal, which is fed to the counting input of counter 5 and simultaneously turns off the control unit 3. The subsequent subtraction signal arrives last in the cycle being shot signals from the sensor and prepares the counter 5 for the subtraction mode in the case of rollback. If the machine continues to operate in winding mode, then the next fourth signal will be the addition signal and the counter operation will be repeated by analogy with the above. If it is necessary to unwind the threads from the coil, then after the subtraction signal there will be a counting signal, which in this case will be subtracted from the contents of the counter 5. In the process of eliminating a thread breakage, the coil can oscillate, and the signal of one type can be repeated , counting, addition - addition, subtraction-subtraction. The number of repetitions of the same signals can be arbitrary. This device is guaranteed against false alarms due to the use of the operation mode selection unit 2, the control unit 3 and the AND 4 element in it. The use of the device on sectional warping machines greatly simplifies the set of the program and consequently reduces the installation time for a given number of turns. In addition, the possibility of reversal in combination with a digital indication of the meter readings allows coils to be wound with an accuracy of one turn, which allows reducing the waste of raw materials in the VO%. Tests of the device showed high reliability and accuracy, 6 work, ease of operation. A device for counting a given number of turns of yarn, containing a software unit, an analysis unit, a decoder, a display unit, a counter, an initial position setting unit and a control unit, characterized in that, in order to improve the accuracy of the device, the counter is made: reversible and a speed sensor, an operation mode selector unit, an AND element and an actuating element, a speed sensor are connected to the inputs of the operating mode selection unit, the outputs of which are connected to two counting inputs, to one of the Element inputs. And two inputs to the control unit, the output is connected to another input of the element, the output of which is connected to the third input of the control unit and to the counting input of the counter, the third input of which is connected to the unit for setting the start position, and the output of the decoder, the output of which is connected to the input of the display unit and to one of the inputs of the analysis unit, the other input of which is connected to the program unit and the output to the actuating element. Sources of information taken into account in the examination 1. US patent number 3862052, cl. 235-91, 1973. 2. US Pat. No. 3,813,525, Cl, 235-92, 1971.

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