SU365401A1 - DEVICE FOR CONTACTLESS THREAD CIRCLE CONTROL - Google Patents

Description

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The invention relates to a device for the non-contact control of a thread break, for example, in the production of fiberglass and fiberglass.

There are known devices for contactless monitoring of a thread break, including a thread break sensor and electrical contacts of a circuit for coupling.

However, the known devices are cumbersome and have a complex kinematic scheme, low response speed and limited amount of useful information about the break.

The purpose of the invention is to increase the reliability and simplify the design.

This is achieved by the fact that the thread break sensor is produced in the form of a rod, at one end of which the axis of rotation is placed, and the other end is provided with a spiral eye, covered with a carving and serving for the passage of the monitored thread. Electrical contacts are located “on the path of the working deviations of the sensor on both its sides.

The device is shown schematically in the drawing.

The thread /, being untapped and normally tensioned, passes through the center of the ear 2 of the breakage sensor. tiger type. By, ;; the survival of the controlled section of the thread section of the thread is fixed by cipip Biibo relative to the Sh: Ka with the help of none;

Sensor core -j. having a horizontal axis 5, opens in both directions, while remaining in this vertical plane, in which the controllable section of the thread is located, and closes contacts 6 or 7, connected independently of each other into the signaling and stopping circuitry having an amplifier S, signal lamps P and B, and a device 11 for switching off the engine of the vehicle and activating the brake.

When the thread I breaks in the area between the spindle (input package) and the sensor 3, the thread is lowered onto the pinch 2 under the action of gravity and the tension force (the machine continues to work and pull the thread) and work the thread against the ear surface deflects sensor 3 forward until it comes into contact with electrical contact 6. A signal luminaire 9 lights up, indicating a breakage area (in front of the sensor).

When the thread breaks in the area between the sensor and the output package, the thread under the force of gravity also lowers onto the gang. Increasing for some time

the sagging of a weakly stretched thread in the area between the sensor and the spool causes the thread to move along its axis backward, which causes the sensor to deflect also backward to contact with the electrical contact 7.

The signal lamp 10 now lights up, point out the vauchak on the breakage area (after the sensor).

In order to increase the reliability of the sensor response, the surface of the ear is covered with a material with a high coefficient of friction when a controlled yarn slides over it, for example, rubber.

Subject invention

A device for contactless monitoring of a break} 1., For example, fiberglass, which includes a breakage sensor and an electric: signal circuit of the signaling device, including :. except that in order to increase the reliability and improvement of the design, the sensor is made in the form of a rod, at one end of which the axis of rotation is divided, and the other end is equipped with a spiral ear, covered with rubber and used for the passage of the controlled thread , moreover, the electrical contacts are located on each of its sides.

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