CS211193B1 - Thick for winding multi-layer coils from thin strips - Google Patents

Abstract

The invention belongs to the field of technological devices for winding coils of non-rotating electromagnetic machines. The invention solves the construction of a mandrel, which consists of a driving plate and a fixing plate, where a supporting insulating cylinder is placed between these plates, on which threads from thin strips are wound. A protruding part of radial insulating inserts is placed between the supporting insulating cylinder and the first thread. The fixing plate on its outer face is provided with grooves for placing insulating inserts so that they do not interfere with winding.

Description

The present invention relates to a mandrel for winding multi-layer. of coils of thin strips that are wound on a supporting insulating cylinder together with insulating inserts to define the axial distance between the coils.

At present, when winding the multi-layer thin-film coils onto the supporting insulating roll together with the insulating inserts using a carrier and a fixation thatch with all-round edge recesses, the insulating inserts have elongated at the point of overhang of the fixture over the edge of the press piece. The auxiliary punches are supported by the edge of the fixing thatch on. its perimeter. .

In such a solution, the insulating inserts during winding under the influence of centrifugal force occupy a perpendicular position on the mandrel axis and cause the threads to deflect. This results in damage to the interlayer insulation and the edges of the conductor, causing inter-turn short-circuits after the winding has been pressed.

Said substantial disadvantage of the presently used solution of a mandrel for winding multilayer thin-reel spools is overcome by the present invention. The essence of the invention is that the fixing plate on the side of its outer face is provided with grooves for the placement of the auxiliary pusher and the pusher of the insulating inserts.

The solution according to the invention makes it possible, after insertion of the auxiliary thrust pieces and thrust parts into the grooves, to reliably fix them against the application of the centrifugal force during winding. The fixation is preferably done by wrapping and silencing with a bandage. Furthermore, according to the invention, washing is accelerated by placing the insulating inserts along the perimeter of the fixing thatch and ensuring their accuracy around the perimeter, which is particularly important in order to prevent damage to the winding when folding and contracting.

The accompanying drawings show an exemplary embodiment of a mandrel according to the invention for winding multi-layer thin-spool bobbins. In FIG. 1 is a cross-sectional front view of a coil mandrel; and FIG. 2 shows a side view of a mandrel.

The mandrel is comprised of a carrier plate 1 and a fixing plate 2, which are provided with peripheral recesses 3 into which the ends of the supporting insulating roll 5 are inserted. The fixing plate 2 on the side of its outer face 6 is provided with grooves 7 for accommodating the auxiliary pressure elements 13 and the pressure elements 9 of the insulating inserts 10.

The procedure for winding the multi-layer thin-film coils 11 onto the supporting insulating roller 5 together with the insulating inserts 10 is as follows. A carrier insulating roller 5 is inserted between the carrier plate 1 and the fixing plate 2 and the mandrel thus prepared is placed on the support rod 12 of the spindle 13 of the winding machine. During winding of the first thread of the multilayer spool 11, overhangs 14 of the fixing parts 15 and the auxiliary thrust pieces 8 and the thrust parts 9 of the insulating inserts 10 are placed between the support insulating roller 5 and the first thread. the pressure parts 9 are secured against the centrifugal force impaction by banding, thereby creating a condition for further continuous winding of the multilayer bobbin 11.

Claims (1)

OBJECTS OF THE INVENTION A mandrel for winding multi-layer coils of thin strips which are wound onto a supporting insulating cylinder together with insulating inserts for defining an axial distance between the coils, consisting of a drift and fixing flange provided with peripheral edge recesses into which the ends of the insulating insulating wall are inserted characterized in that the filament plate (2) on the side of its outer face (6) is provided with grooves (7) for accommodating auxiliary pressure parts (8) and pressure parts (9) of insulating inserts (10). 1st sheet of drawings Severografia, n. P., Race 7. Bridge 211193 <N °° Csl to