SU821558A1 - Device for automatic arresting of warping machine - Google Patents

Description

(54) DEVICE FOR AUTOMATIC STOP OF THE BATTLE MACHINE

The invention relates to the textile industry and can be used in the automation of warping machines for signaling the point of thread breakage and automatic machine stop.

Devices are known for automatically stopping warping machines, when a thread breaks, and for signaling a breakage location, comprising electrical contacts, indicator lamps, intermediate and output relays 1.

However, these devices have low load capacity of the indicator lamps, the presence of intermediate, relay, low sensitivity and short service life of the indicator lamps.

The closest to that proposed by technical sushitnost is a device for automatically stopping a warping machine and signaling its fragment, containing a relay, two diodes, the anodes of which are connected to one terminal of the device, and the indicator connected directly to the first terminal and the second through a circuit. to remove a signal consisting of a series-connected resistor and switch, with

another output device, and the indicator input is connected to the key unit 2.

The disadvantages of this device are low sensitivity of the device, since the current of the control electrode of the thyristor must have a value of 5-10 mA and with increasing transient resistance between the contacts by more than 50 kΩ the device is not operational; rapid deterioration of electrical contacts and an increase in contact resistance due to the passage of the current of the signal lamp through the contacts.

The purpose of the invention is to improve the reliability of the device and efficiency.

Claims (2)

This goal is achieved in that the device for automatically stopping the warping machine when the thread is broken, contains a relay, two diodes, the anodes of which are connected to one output of the device, the indicator connected by the first output directly, and the second through a circuit to remove the signal consisting from series-connected resistor and key with a different output device, and the indicator input is connected to the key unit. equipped with a transistor, a transformer, a capacitor and a thyristor, the anode of which through a relay is connected to one output of the device, the cathode to another output, and the control electrode to the secondary winding of the transformer, the primary winding of which is connected to the cathode of the first diode and collector of the transistor connected by a base the second output of the indicator, and the emitter - to another output in the device, with the third output of the indicator connected to the capacitor and to the cathode of the second diode. The drawing shows a circuit diagram of the device. The device contains an indicator 1, the control electrode of which through a resistor 2 is connected with a key block 3, a transformer 5 with the primary winding 6 is connected to the collector circuit of transistor 4, the secondary winding 7 of which is connected to the control electrode of the thyristor 8, is connected to the anode circuit of the thyristor 8 relay 9 electromagnetic with contact 10, resistor 11 (anode load of indicator 1), diodes 12 and 13 (rectifying elements), capacitor 14, circuit 15. for removing the signal consisting of series-connected resistors 16 and switch 17, lamp 18 resistor 19, terminals 20 and 21 of the device for connecting the mains. The device operates as follows. When one of the warp threads is broken, the contact of the key unit 3 is closed, the positive voltage from the resistor 11 is fed through the resistor 2 to the control electrode of the lamp 18 of the indicator 1, which opens and, with its glow, signals the location of the thread breakage, and the operating current The lamp 18 creates the necessary voltage drop across the resistor 19 and opens the transistor 4, in whose collector circuit on the primary winding 6 of the transformer 5 positive pulses are generated with the frequency of the mains supply. Through the secondary winding 7 of the transformer 5, the pulses open the thyristor 8, in the circuit of which the relay 8 84 9 with contact 10 is switched. Resetting the device to the initial state results in locking the key 17. Using this device increases the reliability of controlling the number of threads in the warp masks, improves the quality of the output products, increases the service life of the power-indicator elements and electrical contacts, increases the reliability and efficiency of the device. Apparatus of the Invention A device for automatically stopping a warping pattern when a thread breaks, containing a relay, two diodes, the anodes of which are connected to one terminal of the device, and an indicator connected directly by the first terminal, and the second through a circuit to remove the signal consisting of series-connected a resistor and a key with a different output of the device, the indicator input being connected to a key block, characterized in that, in order to increase reliability and efficiency, the device is equipped with a transistor, transformer, ndensatorom and a thyristor, the anode of which is coupled through a relay to one side of the device, the cathode - to the other terminal. and the control electrode is with the secondary winding of the transformer, the primary winding of which is connected between the cathode of the first diode and the collector of the transistor connected to the second output terminal of the indicator, and the emitter to the other output of the device, and the third output indicator is connected to the capacitor and the cathode of the second diode, Sources of information taken into account in the examination 1. US patent No. 3803822, cl. D 01 H 13/16, published 1974. 2. USSR author's certificate number 251488, cl. D 01 H 13/16, 03/01/68 (prototype).