Quick-change winding form assembly

Joints and connections – Structurally installed in diverse art device

Reexamination Certificate

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Details

C403S348000, C403S350000, C242S433400

Reexamination Certificate

active

06217248

ABSTRACT:

FIELD OF THE INVENTION
This invention relates to a quick-change winding form assembly especially for use with flier-type armature winding machines.
INCORPORATION BY REFERENCE
The disclosures of U.S. Pat. No. 4,830,297 to Walton et al., U.S. Pat. No. 5,257,745 to Lombardi et al., and PCT patent application number WO 97/39275 of Globe Products Inc. are hereby incorporated by reference herein.
BACKGROUND OF THE INVENTION
Various quick-change winding form assemblies for use in flier-type armature winding machines have been developed including, for example, the winding form assemblies shown in the aforementioned Walton et al. U.S. Pat. No. 4,830,297 and the aforementioned Lombardi et al. U.S. Pat. No. 5,257,745.
FIGS. 22
,
23
and
24
of the Lombardi et al. '745 patent, show an embodiment of a quick-change shroud or winding form arrangement in which a winding form is provided with a dovetail-shaped keyway that receives a key on a support for the shroud so that the shroud may be slid horizontally onto the support. A pair of spring-biased balls connected to the support extend into recesses in the rear surface of the shroud to provide a detent action to releasably locate the shroud in its desired working location. The balls may help take the “play” or looseness out of the connection between the keyway on the shroud and the key built into the support. One disadvantage of this construction is that the shrouds must all be machined to be provided with the dovetail key and the recesses.
SUMMARY OF THE INVENTION
This invention is directed to an improved quick-change winding form assembly in which the support is divided into two parts, one part comprising a bearing collar, being connected to a bearing at the front of the flier assembly, and the other part comprising a mounting plate connected to the winding form or shroud. The two support parts can be quickly assembled together by aligning the enlarged ends of a pair of arcuate key slots extending through the mounting plate with the heads of a pair of bayonet pins carried by the bearing collar, pushing the winding form with its attached mounting plate toward the bearing housing and, while holding the bearing collar in a fixed orientation, rotating the winding form until a pair of spring biased balls mounted on the bearing collar enter recesses in the rear face of the mounting plate. Disassembly can be accomplished by simply rotating the winding form with its attached mounting plate in the opposite direction while holding the bearing collar fixed. The diameters of the recesses are preferably sufficiently large that the balls can enter into the recesses without applying any pressure to the mounting plate. With such a construction, the spring pressure exerted against the balls can be so low that there is little resistance to the assembly or disassembly of the mounting plates and their associated winding forms. The mounting plates can be produced in large quantities and need not be custom-fitted to each winding form. In addition, because only light spring pressure is needed, there will be little wear on the connecting parts during use of the winding form and its mounting plate or during removal or replacement of the winding form.


REFERENCES:
patent: 4385577 (1983-05-01), Graham
patent: 4773788 (1988-09-01), Ruhl
patent: 4786004 (1988-11-01), Boers
patent: 4830297 (1989-05-01), Walton et al.
patent: 5143468 (1992-09-01), Pausch
patent: 5255994 (1993-10-01), Stein
patent: 5257745 (1993-11-01), Lombardi et al.
patent: 5437515 (1995-08-01), Kuramoto et al.
patent: 5688030 (1997-11-01), McAnally et al.
patent: WO 97/39275 (1997-10-01), None

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