SU362561A1 - Device for contactless orientation of non-magnetic conductive parts - Google Patents

Description

one

The proposed device can be used in the radio electronic and instrument-making industry for orienting nonmagnetic conductive parts.

Devices are known for contactless orientation of non-magnetic conductors of two parts in a pulsating magnetic field formed in the interpolar space of an electromagnet. In the known device, the parts are fed to a tray in which short-circuited turns are embedded.

However, in short-circuited coils, there is a well-defined phase angle of the induced currents, which is usually not optimal for partially de-weighing the oriented parts. Therefore, the effectiveness of the device at different frequencies varies.

The proposed device is characterized in that in it a fixed conductive body is made in the form of a coil connected to an adjustable phase-shifting chain containing, for example, capacitance and inductance. This ensures that the phase angle of the induced currents is optimal and enables non-tuning with frequency variation.

The drawing shows a proposed device with a coil located above the outboard tray for pressing the orientable parts to the tray, which is useful in a number of cases.

When the coil is used to partially suspend the oriented parts, its

mounted in a tray so that the parts of the turns facing the part are located flush with it in the tray. The coil can be made both single-layer and multi-layered. The cross section of the coil is chosen

depending on the required value of its interaction with the oriented part. The device consists of a tray 1, an electromagnet 2 forming a pulsating magnetic field, a coil 3 connected to an adjustable phase-shifting chain containing, for example, capacitance 4 and inductance 5. The phase-shifting chain can contain only one of the elements, for example, inductance (which in this case should be

adjustable), or only adjustable capacity. To extend the frequency control limits, both elements of the phase-shifting chain, both inductance and capacitance, can be made adjustable.

The proposed device works as follows.

The orientable body, located on tray 1, is introduced from one of the known methods into the space between the poles of the electromagnet 2 (orientation zone). The inverted currents interact with the currents induced in the non-iodine conductive body, made in the form of a coil 3, connected in series with the inductance 5 and an adjustable capacitance 4.

Depending on the location of the coil — above or below the oriented body (in the tray, flush with the tray surface) —interaction forces either cause the oriented body to be pressed against the surface of the tray, or partially unbalanced.

By changing the capacitance 4, an optimum phase angle between the induced currents in the oriented part and in the coil 3 of the stationary body can be selected. The same capacity is used to reconfigure the device on a different frequency when orienting parts of other sizes.

The inductive element of the device may also be inductance 5.

Subject invention

A device for contactless orientation of non-magnetic conductors w, their parts in a pulsating, magnetic field, formed in the internolar space of an electromagnet and interacting with the currents induced by it in the details supplied by the tray and fixed by the fact that To obtain a rational phase angle of induced currents, the stationary conductive body is made in the form of a coil connected to a phase-shifted chain containing, for example, capacitance and inductance.