US1383186A - Winding apparatus - Google Patents

Description

C. A. BRINK.

' WINDING APPARATUS.

APPLICATION FILED JULY 13, 191B.

Patented June 28, 1921.

2-SHEETSSHEET 1.

C. A. BRiNK.

WINDING APPARATUS.

APPLICATION HLED JULY13,19\8.

Patented June 28, W21,

2 SHEEYSSHEET 2.

STATES PATET OFFICE.

CARL A. BRDTK, 0F PROVIDENCE, RHODE ISLAN'T), ASSIGNOR TO UNIVERSAL WINDING COMPANY, OF BOSTON, MASSACHUSETTS, A. CORPORATION OF MASSACHUSETTS.

WINDING APPARATUS.

Application filed July 13,

To all whom it may concern:

Be it known that I, CARL A. BRINK, a citizen of the United States, residing at Providence, in the county of Providence, State of Rhode Island, have invented certain new and useful Improvements in Wind ing Apparatus, of which the following is a specification.

My invention relates to winding machines and consists particularly of an improved apparatus for use in Winding electrical coils. The object of my improvement is to provide means for continuously pressin against the peripheral surface. of the col during its Winding to insure a smooth, even disposition of the turns of wire orother conductor in the successive layers; while also facilitating the insertion of strips of insulatingmaterial between the layers and preventing them from buckling or skewing out of position. My improved apparatus is especially adapted for use in producing coils of rectangular, polygonal or irregular shapes and for this purpose it consists essentially in means vfor pressing a flexible hand against the periphery of the coil while providing for its travel thereover as the coil is rotated on its axis.

The manner and means for carrying out the improvement are fully described in the following specification, illustrated by the accompanying drawings, in which like reference characters designate like parts. In the drawings Figure 1 is a side elevation of the essen tial elements of a winding machine, comprising the rotating winding mandrel; the traversing Wire-guide; the means for feeding strips of insulation into the coil; and illustrating my improved pressure-device as employed in connection therewith;

Fig. 2, a side view of the parts shown in Fig. l;

8, a plan View of the pressure-device by itself; and

Fig. l, a side elevation of a modified form of the device shown in Fig. 1.

Referring to Figs. '1 and E2 of the drawings, S designates the rotating windmgspindie which carries an e'zrpansible arbor or former for the coil C, and G is the traverswire-e'uide adapted to be reciprocated longitiuili ally of the mandrel to lay the turns of coiductor in place thereon. These Specification of Letters Patent.

Patented June 28, 1921. 1913. Serial No. 244,788.

velements of the Winding-mechanism may be usually provided, but not herein shown or described. The guide-arm G is preferably constructed of sheetfimetal, bent to surround the traverse-rod R and clamped thereon by the screws 9, 9. At its lower end it carries a grooved guide-Wheel D journaled on a spindle d, and a second, auxiliary guide-pulley E is rotatably mounted on an extension H fastened to the guide-arm G at f. The wire or other attenuated conductor 10 leads from its source of supply, not here shown, down over the pulley E and thence around the guide-wheel D to the coil C. The winding-spindle S is rotated continuously during the operation of the machine and the wire w, fed thereto over the guide\vheel D, is traversed back and forth along the mandrel F to deposit it in adjacent helices which build up superimposed layers conforming to the outer contour of the mandrel or former F.

In accordance with a common practice a thin strip of paper or other insulating-material is wrapped about each layer of wire to separate it from the next succeeding layer applied thereover, and this may be inserted in the coil by manual means or through the intervention of automatically-operated instrumentalities as next described. As shown in Fig. 1 the present type of machine comprehends a paper-feeding device P which operates to apply the paper or other insulating-strip to the coil after the completion of each layer of wire-windings. paper 2') is fed from beneath the winding: mandrel F through a chute or guideway which directs its end into place beneath the wire strand being wound so that it will'be secured in place thereby as the Wire is laid over its surface. For feeding the paper a pair of pressure-rollers U, Q are arranged to bear against the strip ,0 passing between them, and these may be operated intermit tently as occasion requires, or, in some cases, one of the rollers is driven continuously out of engagement with the other roller, but pressed when the paper is to The strip of lilo fed to the coil. As the automatic paper-feed is not essential to the present improvement it is not herein shown or described in detail; suflice it to state that after each layer of wire turns is completed the paper is fed forward under the first turn of the wire in the next layer and, being held thereby, is wrapped around the coil C to completely cover its surface. Usually the machine is arranged to sever the strip of paper into'appropriate lengths in proportion to the length of circumference of the coil to be wrapped, and in some cases several thicknesses of paper are laid on one over another to insure complete insulation. As before stated the machine is refer-ably designed for automatic operation in inserting the insulating sheets or strips, but in some cases the paper might be cut to length previous to its use and inserted by hand, my present improved pressure-apparatus being adapted for use with either method of building the coil.

As illustrated in Fig. l, the pressure-device for pressing the layers of wire-windings into place and for holding and guiding the insulation-strips against the surface of the coil comprises essentially an endless, flexible belt or band B stretched between two spaced-apart pulleys or rollers T, T. The pulleys T, T are journaled on suitable bearings to provide for their rotation as the belt is traveled over their peripheries, and preferably they are adjustable in relation to the winding-spindle to regulate the contact of the belt B against the coil. As shown 1n Figs. 1, 2 and 3, the pulleys T, T are supported from a rectangular frame U which comprises a wire-rod 2 bent in U-shape and attached at its ends to an arm 3. The arm 3 is secured to the end of an arm 4 depending from the bearing 1" which forms a part 0 the machine-frame. Asshown in Figs. 1 and 2, a stud 5 extends through the arm 3 and is screwed into a boss (3 on the arm 4 so that by loosening it the whole frame I may be rocked on its support to adjust it in angular relation tothe winding-spindle S. Depending from each side of the frame ll are two arms 7-T and 8-8 which carry the bearings for the pulleys T. T. The arms 7 and 8 are bored to receive the rod 2 and are split at their ends to adapt them to be clamped thereover by nicansof the binderscrews j, y. This arrangement provides for adjusting the arms T-T and 8 8 in relic tion to each other to stretch the belt l) between the pulleys T,T. At the lower ends of the arms 7 and 8 are split bores 9 adapted to receive tubular bushings it) which are clamped therein by the biinler-scrcws ll. The pulleys T. T are preferably constructed of wood or fiber. to render them light in weight. and have metal bushings l2 forced into their axial bores. Extending through the bushings 12 are spindles l3 projecting at the ends to adapt them to be held in the bushings 10 carried at the ends of the arms 7 and 8.

In the embodiment of the invention illustrated in Figs. v1, 2 and 3, and just described, I employ a belt B constructed of rubber or other resilient material so that its stretch will accommodate the irregular form of the coil as the latter is rotated against it. For winding cylindrical coils the belt might be made of fabric, leather or other inelastic material and this type of belt is also adapted for use on all forms of coil with a slight modification in the means for supporting the pulleys on which it travels. I have shown such a modification of the invention in F i 4:, the frame U which carries the belt-pu leys T, T being supported on a pivot at its lower end to adapt it to rock away from the winding-spindle in conformity with theirregular eriphery of the coil against which the belt bears. As here illustrated the frame U is pivoted on a stud or screw 15 with a spring 16 attached to its upper end. The spring 16 is anchored to some fixed part of the machine, not herein shown, and tends to swing the frame U on its pivot to hold the belt B bearing against the surface of the coil with a slight pressure. As the corners or high points on the periphery of the coil C rotate against the belt the frame U will ride up and down with a slight rocking motion, and therefore it is not required to employ a yieldable or resilient belt with this construction.

Having now described the construction and arrangement of my improved device in two of its simplest forms, the method of operationof the complete winding apparatus will next be explained: Usually a thin tube or several thicknesses of paper are placed on the former or mandrel F before starting to windthe coil, thus providing a core m for the layers of wire to be built up thereon. The wire '10 or other strand of conductor is then led down from its source of supply, over the guide-pulleys E and l) on the, guide-arm G, and its end fastened to the core in any suitable manner, such as by coiling it several times therearound. 'hen the winding machine is started the rotation of the spindle S will wind the wire w onto the core. m and meanwhile the reciprocation of the guide G will traverse it back and forth to lay it in closely-adjacent, helical turns. As the conductor in is thus laid in place the rotation of the former F will causethe belt 13 to travel over its periphery to press the turns of the wire snugly into place and prevent the or springing radially out from the axis of the coil. The contact of the surface of the coil with the belt it causes the latter to continuously travel on its pulleys T. T while following the contour of the winding, the

layers from bulging conform to the contour thereof to press the windings into place thereon.

7. In a winding apparatus, the combination with the winding-mandrel, of guidingmeans for traversing strands of wire or other conductor back and forth on the mandrel to build up a coil, a flexible belt arranged to bear against the periphery of the coil wound on the mandrel, and means to maintain said belt pressing on the coil under tension to adapt it to conform to the contour thereof to press the layers of winding into place around the mandrel.

8. In a winding apparatus, the combination with the winding-mandrel, of guidingmeans for traversing strands of wire or other (:0 iductor back and forth on the mandrel to bi ild up a coil, a flexible belt arranged to bear against the periphery of the coil Wound on the mandrel and to conform to the contour thereof to press the layers of winding into place thereon, and means to adjust the operative relation between the mandrel and belt to regulate the pressure of the belt on the coil.

9. In a winding apparatus, the combination with the winding-mandrel, of guidingmeans for traversing strands of wire or other conductor back and forth on the mandrel to build up a coil, a pair of rotatable pulleys, an endless belt adapted to travel on the pulleys, and means to adjust the position of the pulleys in relation to the winding-mandrel to maintain the belt bearing against the periphery of the coil wound on the mandrel to adapt it to conform to the contour thereof to press the windings into place thereon.

10. In a winding apparatus, the combination with the winding-mandrel, of guidingmeans for traversing strands of wire or other conductor back and forth on the mandrel to build up a coil, a frame, a pair of pulleys journaled on bearings on the frame. an endless belt extending between the pulleys, and means to adjust the frame in relation to the winding-mandrel to maintain the pulleys in position to cause the belt to be traveled against the periphery of the coil wound on the mandrel while conforming to the contour thereof to press the windings into piace thereon.

11. In a winding apparatus, the combination with the winding-mandrel, of guidingrneans for traversing strands of wire or other conductor back and forth on the mandrel to build up a coil, a pair of rotatable pulleys, an endless belt stretched between the pulleys, means to adjust the pulleys in relation to each otherto regulate the tension on the belt, and means to adjust the pulleys in relation to the winding-mandrel to maintain the belt bearing against the coil wound on the mandrel while conforming to the contour thereof to press the windings into place thereon.

.12. In a winding apparatus, the combination with the winding-mandrel, of guidingmeans for traversing strands of wire or other conductor back and forth on the mandrel to build up a coil, a frame adjustable in position in relation to the mandrel, arms projecting from said frame, pulleys journaled at the ends of the arms, means to adjust the arms to regulate the distance between the pulleys, and an endless belt stretched around the pulleys to adapt it to be traveled over the periphery of the coil wound on the mandrel while conforming to the contour thereof to press the windings into place thereon.

13. In a coil-winding apparatus, the combination with the winding-mandrel, of means to traverse a strand or strands of conductor on the mandrel, means to feed strips of insulating-material into the coil, and a traveling belt arranged to bear against the periphery of the coil during the winding to press the insulating-strips into place and prevent them from buckling or skewing.

14:. In a coil-winding apparatus, the combination with a rotating winding-mandrel, of a traversing wire-guide for depositing the turns of conductor in place on the mandrel, means for feeding strips of insulating-material to the coil, and a flexible belt arranged to bear against the periphery of the coil and to travel 'thereover to Wrap the insulatingstrips snugly around the surface of the coil.

15. In a coil-winding apparatus, the combination with a rotating winding-mandrei, of a reciprocating wire-guide for traversing the conductor-strand on the mandrel, means for feeding strips of insulating-material to the coil, and an endless elastic belt arranged to travel over the periphery f the coil to guide and press the insulation-strips into place in wrapping them around the coil.

In testimony whereof I aihx my signature.

CARL A. BRINK.

elasticity of the belt providing the give and take necessary for the varying diameter of the coil-mass as shown by the dash lines in Fig. 1. IVhen an inelastic belt is used, with the modified form of device illustrated in Fig. 4, the pivoted, belt-pulley supporting-frame U rocks up and down under the tension of its spring 16 as the coil C rotates against the belt. With either arrange ment a constant pressure of the belt against the coil is maintained notwithstanding the unequal distances of different portions of the surface of the coil from its axis of rotation.

After each layer of wire turns is completed. that is to say, as soon as the wireguide G reaches the extreme of its traverse in either direction, the paper-feeding device comes into action to feed the insulatingstrip into the coil. This is effected bv the rotation of the coacting feed-rolls O, O which project the paper strip 7) upwardly toward the surface of the coil with its leading edge beneath the wire strand 21:. Now, as the wire-guide G moves back across the coil in the opposite direction from that in which it has just traversed to lay the wire turns of the preceding layer, the wire strand will be laid on over the paper to cause the latter to be wrapped around the surface of the coil. Meanwhile, the leading edge of the paper strip 2 feeds in under the belt B and is thereby flattened out and pressed into place against the periphery of the coil. The belt B being traveled by and with the surface of the coil assists in drawing the paper strip along with it and at the same time holds it against skewing while preventing its edges from buckling or crimping. In this way the paper is caused to feed into the coil square with its axis, and being pressed flat and ironed down against the wire it cannot bulge or wrinkle. Besides serving for this purpose of pressing the insulating-strips against the coil the traveling belt B also acts to hold the wire turns firmly in place and to compress the layers to prevent them from bulging out on the flat sides of the coil. It has been demonstrated that through the use of my improved apparatus a much more symmetrical form of coil can be produced, with the layers of wire compacted into less space and their convolutions held more securely and evenly. For this reason the air space in the coil is materially lessened while its dimensions are reduced to the minimum; and in addition its whole structure is strengthened and solidified. It will therefore be seen that my invention not only makes for greater facility and convenience in winding the coil, tending to increase the rate of production of the machine, but the composition and structure of the winding are also improved and the commercial value of the product thereby enhanced.

Various modifications other than those herein shown might be made in the construction and arrangement of the parts of'the apparatus without departing. fromthespirit or scope of the invention; therefore, without limiting myself to the precise embodiment disclosed, what I claim is 1. In an apparatus for winding electrical coils or the like, the combination with a winding-mandrel, of means to traverse wire or other strands of conductor back and forth on the mandrel to build up a coil, and a fiexible band arranged to bear against the surface of the coil wound on the mandrel and to conform to the contour thereof to press the windings into place and flatten the layers against each other.

2. In a winding apparatus, the combina tion with the winding-mandrel, of means to traverse a strand or strands longitudinally thereof, and a flexible band arranged to bear against the surface of the coil wound on the mandrel and to conform to the contour thereof to press the windings into place.

3. In a winding apparatus, the combination with the winding-mandrel, of means to guide a strand or strands of wire onto the winding-mandrel to build up a coil, and a flexible band arranged to bear against the surface of the coil wound on the mandrel while conforming to the contour thereof and to be traveled thereover to press the windings into place and compress the layers against each other.

4. In a' winding apparatus, the combination with the winding-mandrel, of guiding- ,means for traversing strands of wire or other conductor back and forth on the mandrel to build up a coil, an endless flexible band, and 1 pair of pulleys for supporting the band to adapt it to bear against the surface of the coil'wound on the mandrel while conforming to the contour thereof and to be traveled thereover to press the windings into place thereon.

5. In a winding apparatus, the combination with the winding-mandrel, of guidingmeans for traversing strands of wire or other conductor back and forth on the mandrel to build up a coil, an endless elastic band, and a pair of pulleys for supporting the band to adapt it to travel against the surface of the coil being wound on the mandrel while conforming to the contour thereof to press the windings into place.

' 6. In a winding apparatus, the combination with the winding-mandrel, of guidingmeans for traversing strands of wire or other conductor back and forth on the mandrel to build up a coil, a frame mounted opposite thereto. pulleys journaledon the frame, an endless belt stretched between the pulleys, and means for holding the frame with the belt bearing against the periphery of the coil Wound on the mandrel to adapt it to

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