DE3038672A1 - Coil former for use in automatic winding - has multiple coil chambers with interconnecting inclined slot - Google Patents

Abstract

High voltage electrical coils employing a number of separate coils that are insulated from each other while being interconnected, are wound on a former designed to ensure good insulation. The former is of a cylindrical profile and has a number of dividing walls (3) to form the individual coil cavities (2). Inter-connection between the cavities is provided by a slot (3a) set at an angle in the direction of winding. Winding of the coils may proceed at a constant rate with transfer across the slot being accompanied by a short axial movement.

Description

Chamber bobbins and method for their automatic

Winding chamber bobbins, preferably for winding bobbins for high-voltage applications, the at least one web dividing the winding owns.

With such bobbins, it is necessary that wires with very high different voltage potential do not touch each other. This would be the Case when a wire of the upper layer of a chamber winding with that of the neighboring chamber would come into contact if it were not specially insulated by foil or hose would be drawn to the beginning of the next chamber winding.

So far, high-voltage windings are mostly used as layer windings appropriate insulation on the sides when moving from one layer to the other carried out or the lead wires are specially insulated.

This production is very time-consuming, the material degradation is for the insulation is high and a large changing room is necessary.

The invention is based on the object of providing high-voltage windings in a very small space isolated, automatic production.

This object is achieved in that in the webs between the Chambers an inclined slot is embedded, which the winding wire from the top Wrap layer each a finished wound chamber insulating in its recess for ticklungsanfang leads at the bottom of the next chamber, with the purpose of facilitating the automatic winding at the upper beginning of the inclined slot a forced guidance educated e.g. as a protruding hump on the perimeter of the bar or similar.

The method for automatically winding a bobbin is carried out so that the relative axial movement between the winding finger and bobbin immediately before the winding wire reaches the forced guidance at the inclined slot, for the purpose of transferring is increased by leaps and bounds into the next chamber.

The advantages achieved with this invention are, -that you do the wire transition from one winding chamber to the other there is no reduction in the winding speed must make when positioned exactly at the point immediately before the winding wire the forced guidance at the inclined slot achieved the relative movement of the coil body and Wickelfinger in the direction of the next r ^ 7ickelkarlmer quickly and by leaps and bounds, if possible with a short overstroke, is carried out.

The wire is then securely in the forced guidance of the inclined slot placed.

An exemplary embodiment is described below with reference to the accompanying drawing described: Fig. 1 shows the round bobbin 1 with seven chambers, one chamber 2, the web 3 and the web 4 and the inclined slots 3a and 4a in these webs.

Fig. 2 shows the side view of this bobbin 1 with a radial Section through the Kam1ler 2 and the side view of the web 4 with the beginning 4b of Inclined slot 4a.

The course of this inclined slot i inside the web 4 to the bottom 4d and the opening 4e of the Schrächlitzes 4a in the next chamber are dashed drawn. On the circumference of the web 4 is a positive guide 4c by an outstanding Humps formed.

Fig. 3 shows a rectangular bobbin 5 with seven chambers, a chamber 6 with the webs 7 and U and the inclined slots 7a and 8a.

Fig. 4 shows the side view of the bobbin 5 with a radial one Section through the chamber 6 and the side view of the web 8 with the beginning 8b from Inclined slot 8a.

The course of this inclined slot 8a in the interior of the web 8 to The base 8d and the opening 8e of the inclined slot 8a into the next chamber are shown in dashed lines drawn. On the circumference of the web 8 is a forced guide 8c by an outstanding Humps formed.

Patent and protection claims

Claims (4)

Chamber bobbins (1; 5), preferably for winding coils for high voltage applications, of at least one die Winding dividing web (3; 4; 7; 8), characterized in that in the webs (3; 4; 7; 8) between the chambers an inclined slot (3a; 4a; 7a; 8a) is let in, which finishes the winding wire from the topmost winding layer wound buzzer isolating in its recess at the beginning of the winding at the bottom (4d; 8d) the next chamber leads, with the purpose of facilitating the automatic Wrapping at the upper beginning of the inclined slot (3a; 4a; 7a; 8a) a forced guidance (4c; 8c) is formed, e.g. B. as a protruding hump on the circumference of the web (4; 8) or the like. 2. Method for the automated winding of a coil body according to Claim 1, characterized in that the relative axial movement between the winding fingers and bobbin (1; 5) immediately before the winding wire the restraint (4c; 8c) reached at the inclined slot (3a; 4a; 7a; 8a) for the purpose of transferring to the next Chamber (2; 6), is increased by leaps and bounds. 3. winding method according to claim 2, characterized in that when Wrapping of relatively narrow chambers (2; 6) of the winding fingers is not relative axial Movement to the bobbin (1; 5) during the t'ckel periods between those mentioned Performs jumps. 4. winding method according to claim 2, characterized in that at relatively wide chambers for the purpose of forming the winding layers the relative axial movement between the winding finger and the bobbin during the winding periods between the named jumps takes place in the usual way as a pendulum feed movement.