SU105817A2 - Device for signaling the presence of metal objects woven into the fabric - Google Patents

Description

Basically auth. St. No. 99996 describes a device for signaling the presence of metallic iredmets woven into the fabric, with the use of two pairs of electrodes located on the fabric movement path on both its sides and included in the signal or drive control circuit.

The proposed device is more efficient than the known one.

The peculiarity of the device is that the electrodes are formed by two electrically insulated one from the other wires laid in screw grooves on a semi-cylindrical block made of insulated material.

FIG. 1 shows the electrical circuit of the device; FIG. 2 - a general view of the electrode; in fig. 3 - view of the electrode in wake section.

The device is mounted, for example, between a diffuser and a water calender in the bleaching department of the finishing industry.

The device represents two pairs of electrodes 1 - 2 located along the movement of the fabric from its upper and lower sides.

Each electrode is made in the form of a semi-cylindrical block 3 of insulating material, for example, a textolite, having helical grooves, in which wires 4 and 5 are electrically insulated one from another. The wires are connected to corresponding contact bars 6 and 7.

The electrical circuit of the device includes: a low voltage transformer 8, magnetic starters 5 and W, solenoids 1} and 12 included in the electrode circuit, and a signal light bulb 13.

If there are no woven metal objects in the fabric, the electric current with a voltage of 12 V comes from the step-down transformer g to the coil of the magnetic starter 9 (included in the signal lamp circuit), and the moving part of the actuator is turned to fixed and the signal lamp circuit is open.

In the presence of woven metal objects in the fabric, the latter close the wires of the electrodes and

The electric current is in the coils of the solenoids // and / 2. The core of the solenoid // is drawn into the inside of the coil and opens the circuit to the magnetic starter 10 of the engine; tissue movement ceases.

The core of the solenoid 12 opens the circuit of the magnetic actuator 9, as a result of which the blocking circuit of the signal lamp opens.

The arrangement of the wires 4 and 5 along the helix on the convex surface of the pads ensures reliable operation of the device at various positions of metal objects woven into the fabric.

The subject of the invention is a device for signaling the presence of metal objects woven into the fabric, using two pairs of electrodes located on the fabric movement path on both its sides and included in the signal circuit or drive control, along the main bus. St. No. 99996, characterized in that, in order to increase the efficiency of the device, the electrodes are formed by two electrically insulated one from another wires laid in a helical groove on a semi-cylindrical block of insulating material.

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No. 105817

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