Method and apparatus for forming laminated coil
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsToshiichi Murakoshi, Hiroshi Kawazoe
Life of this patent
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Abstract
A laminated coil-forming method for winding wires and insulation films around a core, includes the steps of winding a first insulation film around an inner coil formed around the core, winding a second insulation film around the first insulation film with the second insulation film having a smaller width than a width of the first insulation film, and winding a third insulation film around the second insulation film with the third insulation film having a greater width than the width of the second insulation film before forming an outer coil.
Claims11
A laminated coil forming method comprising:
- feeding an insulation film toward a core;
- winding an insulation film around the core to form an underlayer;
- winding wires on the underlayer to form an inner coil;
- winding a first portion of the insulation film around the inner coil on the core;
- cutting a second portion of the insulation film, said cutting being performed during said step of feeding, so that the width of the second portion is less than the width of the first portion;
- winding the second portion of the insulation film around the first portion of the insulation film;
- and
- winding a third portion of the insulation film around the second insulation film, wherein the third portion forms an outer layer which has a width greater than the width of the second portion.
A laminated coil forming apparatus comprising:
- a core holding means for holding a core;
- a wire winding means for winding wires around the core;
- and
- an insulation film winding means for winding insulation film around the core, said insulation film winding means including a cutting means for cutting a portion of insulation film, corresponding to an intermediate layer of three insulation layers, to reduce the width of the portion of the insulation film,
- wherein said core holding means and said insulation film winding means define a film transfer path, and said cutting means is positioned along the film transfer path adjacent said core holding means.
A laminated coil-forming apparatus comprising:
- a support base;
- an insulation film supply reel mounted within said support base;
- a pair of insulation film feeding rollers mounted on said support base in the vicinity of said film supply reel;
- a frame supported on said support base;
- a core mounting spindle projecting from said frame;
- a wire winding mechanism for winding wires around the core;
- an insulation film cutter mounted on said support base between said pair of feeding rollers and said spindle,
- said insulation film cutter having a guide passage for receiving insulation film from said pair of feeding rollers, wherein said cutter is operable to reduce the width of a length of insulation film.
Dependencies are inferred from the claim text.