Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1987-12-10
1990-04-03
Matecki, Katherine A.
Winding, tensioning, or guiding
Coil holder or support
Spool or core
H02K 1585
Patent
active
049133624
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to wire winding on a stator, and in particular to means for causing synchronized movement of a plurality of wire winding nozzles held by nozzle holders on a stator winder equipped with a concave cam.
BACKGROUND OF THE INVENTION
In one conventional stator winding system, a plurality of nozzle holders are driven for movement by the rotation of a heart-shaped cam. Since no synchronized movement of the nozzles is obtained in this system, the delivery of lead wires and lengths of wire between the magnetic poles is not uniform. As a result, additional adjustment is required after the magnetic poles are wound. Furthermore, with such stator winders, adjustment in the nozzle stroke is required every time the size of the heart-shaped cam is changed.
SUMMARY OF THE INVENTION
In accordance with the present invention, a slope cam in pressure contact with a concave cam is slidably coupled to a cone. Nozzle holders for wire winding nozzles are held by a support member in contact with the inclined face of the cone. A center tube coupled to the support member passes through the slope cam and the cone. Through the action of the concave cam on the slope cam, the nozzle holders are driven for synchronized movement in order to assure a uniform length of lead wires between magnetic poles.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a sectional view of the main part of the swing mechanism in accordance with the present invention,
FIG. 2 is a plan view taken along line X--X in FIG. 1, and
FIG. 3 is perspective view showing the mechanism of FIG. 1 in a disassembled state.
DETAILED DESCRIPTION
As shown in FIGS. 1 and 3, spindle 1 is coupled to a driving source 2 for rotation. The spindle 1 is inserted into the underside of connector 3 and clamped in position between fastener pieces 5A and 5B by the use of an appropriate bolt (not shown) inserted into a bore 4. A bore 5D is formed in the connector 3 above the fastener pieces 5A and 5B for fixed coupling of the connector 3 with the spindle 1. Guides 6A and 6B project upwardly from lateral ends of the upper face of the connector 3, and a center tube 7 is arranged upright between the guides 6A and 6B in communication with the bore H of spindle 1. A bore 5C is formed in the connector 3 above the bore 5D for fixed coupling of the connector 3 with the center tube 7. The center tube 7 extends through a slot 9 in a slope cam 8 so that the slope cam 8 is slidable about the center tube 7 in the space between the guides 6A and 6B. A threaded bore 10 in the slope cam 8 is sized and shaped to receive a screw 12 having a ball 11 in the head thereof. A bore 13 in slide cam 8 receives a fastener screw 15 which applies pressure to the center tube 7 via a coil spring 14. A concave cam 16 is properly supported via bores 17 formed in its side face. A ball screw 17A is coupled to the concave cam 16 for reciprocal movement of the concave cam 16. A hollow face 16A formed in the concave cam 16 is in pressure contact with the ball 11 on the screw 12.
A cone 18 having an axial center bore 19 is positioned about center tube 7. An inclined cutout 20 is formed in the lower part of the cone 18 in communication with the center bore 19. As the slope cam 8 is urged to reciprocate in the inclined cutout 20 by the concave cam 16, the cone 18 is driven for movement in the longitudinal direction along the center tube 7. A coil spring 21 placed on the cone 18 about the center bore 19 is inserted into the underside of a support member 23. Support member 23 is made up of a plurality of units for coupling a plurality of nozzle holders 22A, only one such nozzle holder being shown in FIG. 3. The support member 23 is provided with an axial center bore 24 to receive the center tube 7, and is fixedly mounted to center tube 7 via radial bores 24. An annular groove 26 is formed in the upper part of the outer face of the support member 23 to receive a ring spring 27 as described below.
Nozzles, such as N and N1, are held in position by nozzle holders, such as 22 and
REFERENCES:
patent: 4634063 (1987-01-01), Watanabe
patent: 4762283 (1988-08-01), Sabatino
Kamei Machine Project Co., Ltd.
Matecki Katherine A.
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