SU41085A1 - Method of making electric coils - Google Patents

Description

When winding the coils in the usual way on a folding block, it is difficult to achieve the correct shape of the roller: it is not round, but elliptical. In addition, the wound coil is impossible to remove from the blank so that the coil does not have a pin.

According to the invention, a new method for manufacturing coils is proposed, which makes it much easier to obtain their correct shape. In particular, this method is suitable for the manufacture of electrodynamic speaker coils.

In FIG. 1 shows a blank - (frame) with a wound auxiliary wire; FIG. 2 shows a strip of paper for winding this wire; FIG. 3-ring of the press; FIG. 4 — coil manufacturing process; FIG. 5 - a section of the wound coil.

The manufacturing process of the coil begins with wrapping the blank with an auxiliary wire (Fig. 1), the diameter of which is chosen so that the required gap (0.2-0.4 mm for an electrodynamic loudspeaker) is obtained between the coil core and the coil itself. The ends of this wire are fixed on the ends of the blank, the diameter

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which should correspond to the diameter of the core coil.

Then, a lining for the winding (Fig. 2) is cut out of thin, durable paper and, tightly wrapped around a wire with a wire (otherwise wrinkles are inevitable), the paper is glued together along the seam. Next, a press-spun cuff is applied to the lining (Fig. 3) and tied around with one, two turns of a thick wire. The cuff must first be attached (by wrapping a pencil at least) a cylindrical shape. Passing (Fig. 4) the end of the wire into the gap between the edges of the cuff and smearing the lining under the winding with shellac or other glue (tsaponovym, bakelitovym), neatly, turn to the turn, wind the required number of turns in., The space from the edge of the cuff to the cuts . In this case, each row of windings is impregnated with liquid glue, since even one loosely glued coil gives a rattle. The end of the winding is passed into the same slot between the edges of the cuff and temporarily behind. The wire is then removed from the cuff and coated with the glue of the winding and cuff. After letting the glue dry slightly, bend and glue the cut strips of the gasket to the coil. It is advisable to glue the coil with one turn of thin paper in order to close the gaps between the strips. Wrapping the coil with one or two turns of tissue paper, tightly tie it with a thread (again turn to the turn) and leave to dry. Removing a KZhtushka from a blank is very easy: off into the thread and straightening the winding leads, the end of the wire is released from the end of the wire under the lining and carefully pulled out all of it from there. The coil is then easily released. The coils made in this way are very durable.

The subject invention.)

Claims (3)

1. A method of manufacturing electric coils, especially for an electrodynamic loudspeaker, characterized in that, in order to facilitate removal of the coil from the pig after it is wound, one row of auxiliary wire or thread is wound on the pig, which after winding the coil on it is removed by pulling coil by coil, after which the coil is removed from the blank (Fig. 1). 2. A method of carrying out the method according to claim 1, characterized in that the auxiliary wire or thread is wrapped with a strip of tape with edges cut from the end, which are bent around the wound coil in order to fasten it (Fig. 4). 3. Acceptance of the method according to claim 1, characterized in that the ends of the coil are passed into the gap of the ring from the presspan adjacent to the coil (Fig. 3, 4, 5)., ctinraFig4,