US2430106A - Coil winding machine - Google Patents

Description

Nov. 4, 1947. R. M. CONKLIN COIL WINDING MACHINE Filed Aug. 22, 1945 3 Sheets-Sheet 1 INVENTOA? Nov, 4, 1947. R. M. CONKLIN v I COIL WINDING MACHINE 3 Sheets-Sheet 2 Filed Aug. 22, 1945 EU INVENTOR RM; GONAL/N A TTOPNEV Nov. 4, 1947. CONKLIN con. wmnme MACHINE File d Aug. 22, 1945 5 Sheets-Sheet s Mil E1970 I RM. CON/(LIN ,Lu-- Qwu ATTORNEY by pulling Patented Nov. 4, 1947 COIL WINDING MACHINE Robert M. Conklin. West Newbury, Mass, asslgnor to Western Electric Company,

Incorporated,

New York, N. Y., a corporation of New York Application August 22, 1945, Serial No. 611,934

7 Claims.

This invention relates to coil winding machines, particularly those of the toroidal winding type and the primary object of the invention is a machine of this type which is capable of winding coils of very small size and weight.

Present standard machines of this general type have winding rings equipped with wire guides and supplies of wire and traveling in circular paths which extend through the annular cores upon which the wires are being wound. During the a loop during the its position farthest after it has padded through the core. This loop is carried around and then suddenly pulled tight on the core thereby subjecting the wire to a sudden and abwhich is a limiting factor tent of increasing the cross-sectional area of the v coil by twenty or thirty per cent.

It is, of course, desirable to make these coils as small and compact as possible and this is particularly true when they are to be used in military communication systems where minimum volume and Weight are of primary importance.

The sizeof a coil of given electrical constants is largely determined by the diameter of" the wire used and the size of central aperture of the finished coil. The aperture cannot be reduced A. W. G. in posed on it Attempts order to withstand the tension imwhen the loops are tightened. have been made to control the loops them between spring-backed plates before the as applicant is aware, none of these expedients have been successful in eliminating either the overlapping of the turns or the high tension produced when In the winding machine o'f this invention, a shuttle carrying a supply of the wire to be wound on a core is driven at constant speed and a flyer for guiding the'wire from the shuttle around the core is driven by means the loops are tightened on the core.

ing action on the wire wire passes to the core, but insofar under constant tension so that the formation of loops or anyslack which could result in jerk- ,or overlapping of the turns is effectively prevented.

In one embodiment of the invention, the fiyer is driven by compressed air around a stationary track and Alternatively, the flyer may be frictionally supported on the track and the track driven at a higher speed than the shuttle to apply to the flyer a constant accelerating equivalent of that obtained in above construov tion by pneumatic means.

With either of these constructions, the elimiused heretofore and the elimination of the loops and the overlapped turns. The use of finer wires reduces the size of the coil not only because of the reduced bulk of the winding itself, but also because the resulting thinner windng layer per- Other objects and advantages will be apparent from the following detailed, description when considered in conjunction with the accompanying drawings, wherein Fig. 1 is a fragmentary side .elevational view of a toroidal coil windingimachine constituting one species of the invention, portions thereof being broken away:

Fig. 2 is a similar side elevational view of the machine shown in Fig. 1 with other portions, including the shuttle, removed;

Fig. 3 is an elevational of the machine, portions away;

Fig. 4 is an enlarged fragmentary sectional view taken along the line 44 of Fig. 1;

Fig. 5 is an enlarged detailed sectional view taken along the line 5-5 of Fig. 1;

Fig. 6 is a fragmentary detailed view of another species of the invention illustrating the flyer, its track and the driving means therefor;

Fig. 7 is a side elevational view of the open thereof being broken force which is the of given constants which view of the other side shuttle for the species shown in Fig. 8 and the driving means therefor; and

Fig. 8 is a fragmentary sectional view of this species.

Referring now to the drawings, attention is first directed to Figs. 1 to 5, inclusive. In this embodiment oi the invention, a housing ll has an opening ll near its center which extends cutwardly at II to allow sufilcient space for the anthe core. A supply of the wire I! is wound upon an open shuttle ll, which is of'the cross-section- 1 al contour illustrated in Figs. 4 and 5 so that it will pas through the center of the core. The shuttle I8 is described as being open due to the provision of an open portion 2a of suflicient size to allow for the mounting oi the'core It in the chuck l6 prior to the winding of the wire thereon and for the removal 0! the wound core from the chuck.

The inner periphery of the shuttle is is provided with teeth 2| which interengage teeth 22 of pinions 2%, 2i, 2! and 2'. The pinions 23 and 24 are driven by a pinion 21 as illustrated. The teeth of the pinions 23 to 26,, inclusive, are positioned between disc-like guide members 29 and 30 of the pinions, the guide members serving to straddle the teeth 21 of the shuttle at their spaced position? to maintain the shuttle in a given position during its travel guide member 80 of each pinion also serves to support the shuttle due to the fact that a shoulder ii of the shuttle rests upontheperipheries of each of these guide members. If desired, the shuttle may be provided with a frictional drive through its contact with one or both of the guide members 29 and 30 of the pinions 23 to 28, in-' clusive. In may be driven by the pinion 21, or, if desired, all four pinions 23 to 20, inclusive, may be driven thereby. the driving force being transferred from the intermediate pinions through the frictional engagement of their guide members 1 with the shuttle. Shafts 33 to 31, inclusive, are provided for the pinions 23 to 21, inclusive, the shaft 31 being driven by suitable power means (not shown).

The housing III has a compartment l0 which extends in an incomplete circle about the opening H as illustrated in Figs. 3 and 4. A supply in a circular path. The

this instance. the pinions 23 and 21 line 4|, for supplying a fluid such as air under pressure to the compartment 10, may be connected to any suitable supply such as a variable delivery pump 42 under the control of a valve 43 to supply the compartment with fluid or air under variable pressures. A circular arrangement of exhaust ports 44 provide connections between the compartment 40 and a chamber 45. This circular arrangement or exhaust ports will direct jets of air in directions to drive a flyer 8 in a counterclockwise direction. ExhaustEports I! open the chamber to the atmosphere at numerous points.

The flyer includes an arcuate member I! slidably mounted in grooved tracks Ill in the housing ill. These tracks 50 are formed in the housing in opposite walls of an annular passageway ill which extends in an incomplete circle for the flyer. A movable se ment or element 53 grooved as at N to receive the flyer completes the circular 4 track tor the flyer at the open portion II of the housing. One end of the segment 53 is pivoted at 5! while the other end is removably held in position by a spring pressed plunger i8. When the segment is in its open position, the core ll may tlis inserted in place and removed from the chuck Returning to the detailed structure of the flyer, it will be noted that cup shaped members 50. mounted at spaced positions upon the'member 48, provide pockets forthe jets'oi air, to facilitate in the acceleration of the flyer in a counterclockwise direction (Figs. 1 and 2). A guide is mounted upon the opposite side of the member 49 and extends over the shuttle as illustrated in Fig. 5. Through the aid of the guide 60, particularly a groove 8| therein, the wire is free to pass from the shuttle and arou d a sheave 82. The sheave 62 may be sup d by anti-iriction bearings -'or other suitable means on the flyer member N.

In preparing this species of the invention for operation, the auxiliary track section 53 is released irom the plunger 58 and moved outwardly about its pivot 55 for the mounting of a core ll in the chuck it. The track portion is then returned to its closed position as shown in Fi 2.

At this time. or prior to the mounting of the core in the chuck, the shuttle i8 is provided with a supply of the wire l5 by rotation of the shuttle in a clockwise direction. The free end of the wire it is then threaded from the shuttle, through the groove Win the guide 60, around the sheave 62 and is secured in any suitable manner to the core It. The machine is now, ready for operation. The valve 43 is opened to direct air under pressure into the compartment 40 and from the compartment through the exhaust ports 44 in directions to cause acceleration of the flyer 48 in a counterclockwise direction (Fig. 2). At this time, the shuttle i8 is driven at a constant rate of speed in the same direction. The force of the air under pressure applies an accelerating force to the flyer tending to accelerate the flyer at a speed many times the speed of rotation of the shuttle. The force applied to the flyer is of a flexible nature, however, so that the movement of the flyer will be under the control of the wire l5. Furthermore, by applying a constant force to the flyer with the jets of air, a constant tension is created in the wire. Furthermore, the application of the constant tension to the wire eliminates the formation of any slack or loop in the wire which might otherwise result in jerking oi the wire as each turn on the core is completed. By applying a constant tension on the wire and guiding the wire in its entire movement about the core in forming each turn. it is not possible for the wire to whip to one side or, the other to cause over- 00 laying of the turns. but instead the turns are laid uniformly.

The species of the invention shown in Figs. 6 through 8, inclusive, embodies an open shuttle 10 identical in structure to the shuttle II and provided with a similar driving means. The driving means in this instance includes a drive gear ll, driven gears I2 and I3 and idler gears 14 and 15. If desired, the gears ll and 15 may also be driven. The teeth of the gears 12 and 13 inter engage teeth 16 mounted at the inner periphery of the shuttle. -The gears I2 to I5, inclusive, are

the center of a core so. The shuttle is formed with a 'that the gears 88, 88, 8| and which rests upon the outer peripheriesof the members I8 of the gears I2 to II, inclusive. If desired, the gears -I 2 to II, inclusiv may function to provide a frictional drive for the shuttle, through the members I8 and the shoulder 8| of the shuttle, in place of the positive connection of the teeth I8 of the shuttle and the teeth of the gears.

This species of the invention is also similar to the species shown in Figs. 1 to 5, inclusive, in that a continuous track 83 is provided for the flyer 84 with a removable segment 88 to facilitate in the mounting of the core 88 in its chuck 88.

- The difference lies in the detailed structure of the flyer and in the fact that the track is driven at a velocity many times that of the shuttle to apply a driving force to the flyer 84 which is similar to the force applied'to the flyer 48 by the Jets of air. The driving means for the track 88 in this instance is similar to the driving means for the shuttle. A driving gear 81 drives-gears 88 and 89 to drive the track, the latter including the segment 85 having teeth 88 formed on the inner periphery thereof. Companion gears 8| and 82 assist the gears 88 and 89 in supporting the track. 'If desired, the gears 8| and 82 may also be driven. Furthermore, a frictional driving means may be provided between the gears and the track as previously suggested regarding the shuttle. By viewing Fig. 8, it will be noted 82 are provided with guide members 84 and 95 which serve to maintain the track and its segment for rotation in a given path which extends with the shuttle, substantially through the center of the core 88. Furthermore, shoulders 86 of the track and its segment rest upon the outer peripheries of members 95 to support the track in its desired position.

The flyer in this embodiment includes a guide 88 with a groove 98 to receive the wire from the shuttle and direct it to a sheave I88. The guide and the sheave are supported by the flyer 84 which rides in annular grooves I8I in the track 83 and the segment 85. The portion of the flyer at the right of the sheave I88 includes arcuate resilient members I82 which are initially forced toward each other to position them in their grooves. The legs or members I82 of theflyer therefore create frictional contacts with the walls of the grooves I8I so that the driving force of the track will urge the flyer forwardly in a counterclockwise direction, its speed of movement being variable,'however, under the control of the wire I83.

During the operation of this species of the invention, the shuttle, holding the supply of wire, is driven at a constant rate of speed and the track 83 is driven at a much faster rate of speed equivalent to or greater than the speed necessary to cause the flyer to continuously apply a constant tension of a given value on the wire. During the travel of the flyer, particular interest being in the wire controlling end thereof, after it passes through the core and until it reaches the farthest position from the core, a length of wire sufilcient for the next turn on the core is withdrawn from the shuttle. At this time, the flyer is moving at approximately the same speed as the shuttle, although the track is traveling at a higher velocity, the flyer being retarded by the wire which is freed from the shuttle at the speed of travel of the shuttle. During the travel of the fiye'r from its position farthest from the core and until it again passes through the sumcient to rotate the flyer at the maximum g is made possible through. 01, the flyer with the track. to maintain the constant tension on the wire and speed desired. This the frictional contact guide it uniformly about the core..

Although specific understood that they are but illustrative and that various modlflcationsmay be made therein without departing from the scope and spirit of this invention as defined by the appended claims.

' What is claimed is: a

1. In a toroidal coil winding machine a support for an annular core on which a wire is to he wound, a circular shuttle for a supply of the wire,

means to'support the shuttle in a position at right angles to the core for rotation in a circular path extending substantially through the center of the core and about a fixed axis, a flyer under the control of the wire to distribute the wire from the shuttle around the core, a continuous track for the flyer spaced from the shuttle and extendf ing in a circular path through the core, and

a driving force for the flyer to drive the flyer at varying speeds under the j.

and to apply a constant tenmeans for supplying control of the wire sion on the wire.

2. In a toroidal coil port for an annular core on which a wire is to be wound, an open shuttle having a supply of wire thereon,.means to support the shuttle in a position at right angles to the core for rotation in a circular path extending substantially through the center of the core and about a fixed axis, a flyer underthe control of the wire to distribute the wire from the shuttle around the core, a continuous track for the flyer space from the shuttle and extending 'in a circular path through the core, and means for supplying a driving force for the flyer to drive the flyer at varying speeds under apply a constant tension on the wire.

3. In a toroidal coil winding machine, a support for an annular core on which a wire is to be wound, an open partially circular shuttle having .a supply of wire thereon and a shoulder adjacent its inner periphe y. driving means for the shuttle including rotatable members engaging the said shoulder to support the shuttle and guide the shuttle in a the wire to distribute the wire from the shuttle around the core, a continuous track for the flyer spaced from the shuttle and extending in a circular path through the core, and means for supplying a driving force for the flyer to drive the flyer at varying speeds under the control of the wire and to apply a constant tension on the wire.

4. In a toroidal coil winding machine, a support for an annular core on which a wire is to be wound, a circular shuttle for a supply of the wire, means to support the shuttle in a position at right angles to the core for rotation in a circular path extending substantially through the center of the core and about a v control of the wire to distribute the wirefrom the shuttle around the core, a stationary circular track for the flyer, and means to drive the flyer at variable speeds in a circular path controlled embodiments of the inven- Men have been shown and described, it will be winding machine. a supthe control of the wire and to circular path extending.- substantially through the center of the core and about a fixed axis, a flyer under the control of fixed axis,.a flyer under the by the track to create a constant tension on 1 the'wire port for control of the wire to to drive the flyer at In antoroidal coil winding machine, a supan'annular coreon which a wire is to be ,sion on the wire.

6. In a toroidal coil winding machine, a sup-' port for an annular core on which a wire is to be wound, a circular shuttle tor a supply 01 the wire, means to support the shuttle in a position at right angles to the core ior rotation in a circul ar path extending substantially through the center oi the core and about a fixed axis, a flyer under the control of the wire to distribute the wire from the shuttle around the core, a stationary track for the flyer extending in a partially in circular shuttle for a supply ofthe.

circular path, a track segment mounted to extend through thescore and to complete the circular path for the i'lyer.

'7. In a toroidal coil winding machine, a support for an annular core' on which a wire is to be wound, a circular shuttle for a supply of the wire; means to support the shuttle in a position at right angles to the core for rotation in a circuiar path extending substantially through the center of the core and about a fixed axis, a circular rotatable track in a circular path through the core, a flyer having resilient legs supported i'rictionally in the track and movable thereby under the control of the wire to distribute the wire from the shuttle around the core, and means to drive the track at a speed faster than the shuttle to cause the flyer to travel at a speed faster than the shuttle when moving toward the core to maintain constant tension on the wire.

' ROBERT M. CONHJN.

REFERENCES CITED The following references are of record in the ilie of this patent:

UNITED STATES PATENTS Name Date Nickel Oct. 17, 1905 Number

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