RU1802012C - Device for control of working members of machine in case of detection of clotch seam - Google Patents

Abstract

Summary of the invention: the device comprises two induction sensors (A, B), a diode limiter 1, an integrator 2, a comparator 3, a timer 4, a switching unit 5. 2 il.

Description

The invention relates to means for controlling technological processes of fabric processing in the finishing industry of the textile industry, and in particular to devices for detecting a fabric seam when working on shearing, measuring and rejection and twinning machines,

The aim of the invention is to increase reliability and expand the scope of application,

In FIG. 1 shows the equivalent circuit of the prototype: in FIG. 2 is a structural diagram of the proposed device.

The device contains sensor elements A and B, a signal limiter 1, a controlled integrator 2, a comparator 3, an electronic relay 4, an actuator control circuit 5, a power supply 6. In this case, the sensor is connected with its output to a limiter made in the form of a diode connected parallel to the sensor output. The sensor is connected to the signal input of the integrator, the output of which is connected to a comparator connected to the input of the electronic relay. The output of the electronic relay is connected in feedback with the integrator status control input and the actuator control circuit. .

The operation of the device, (

As the fabric v passes through, all the tabs of the sensor elements A and B move and a bipolar signal U UA + UB is generated at the output. the half-wave of which is cut off by the limiter 1, the boundary signal is fed to the signal input of the integrator 2, filtering the signal and eliminating, due to integration, the dependence of the signal level at its output on the speed of tissue movement. The signal from the output of the controlled integrator is supplied

to the input of the comparator 3, which sets with high accuracy the response level of the electronic circuit transmitting the signal to the time relay 4, which generates a control signal transmitted through the control circuit 5 to the actuators and through the feedback circuit to the control input of the integrator 2 in order to eliminate the delay in transition of the electronic circuit to its original state. From power supply 6, the supply voltage is supplied to integrator 2, comparator 3, electronic relay 4, to control circuit 5.

The use of the proposed device for detecting a seam of tissue allows to increase the reliability of the device in expanding the scope of its application for controlling the tissue during its processing on machines with a variable speed mode, to reduce defects of the fabric, to simplify the sorting of the fabric.

Claims (1)

SUMMARY OF THE INVENTION A device for controlling the working bodies of a machine when a tissue seam is detected, comprising induction sensors connected to an input of a control signal generating unit, including an integrator and a time relay, and connected to a switching unit of the working bodies of the machine, which means that the purpose of expanding technological capabilities, it is equipped with a diode limiter and a comparator, and the input of the diode limiter is the input of the control signal generating unit and is connected in series with Inonii integrator comparator and timer, the output of which is further coupled to a control input of the integrator. . (pt / ei