US2614588A - Coil winding reel assembly - Google Patents

Description

Oct 21 1952 E. H. LAYcocK COIL WINDING REEL ASSEMBLY Filed Nov. 10, 1947 WK E .Q @E mn. l. Z 3E I@ fo H H 5 FL. n L .j 4 a. l 9

Patented Oct. 21,y

- UNITED s'rATEs PATENT OFFICE con. 'WIM-)ING REEL ASSEMBLY vErnest H. Laycock, Tampa, Flai.v l .ppncationNoyemt-er. 1o, 194i, serialNn. 785,095

' :i Cnam.. (o1. 14o- 922).

'This invention yrelates*-todevi-ces"'for winding a plurality of coils `of Wire 'of'different sizes in tandem. l l

A primary object'of the vinventi'onisitoprovide avrotary reel'. assembly in 'which .a `vseiectedfpair of; stepped winding forms maybe spacedfromeachother 'longitudinally of. a form Vholder-'to receive a'wire woundin ascolil. on eachiora de`- sir'ed number oi steps lsequencaerid inwhich oneform ofthe pair maybe slid4 towardthe other en .the holder. to. permit vready'.disengagement of thecoils.,` f

vCor'mnercial electric .motors are *madein many sizes. and. withfinany `d'iiie'r'ences. in. .the relative lengths. oi"k consecutive coilsas' Well .as in thenumber of coilsusedfin a group; Aiactory producl ing a standard motor quantity will need. only asingle Winding assembly for the .coils ofi agreat manymotr's, but a. repair shop. may bie called. upon-to rewindzcoilsof at-g-reat .Variety ofA sizes and of many different sequencesinjtandem...

An important object of thel present.. invention y is to'.provideaiorm.holderV upon which different. formsmay be .secured and adjusted quickly and'. with little difficulty to wind' coils` of anyl'enjgth and offany relative dilerenc'es in sizes 'intandem while stillY permitting quick release` omthe'coils when wound without disturbing 'theadjustment oi" the :forms or dismantling theassembly.

In `stator"windings,- 't-he; coils: for single phase arejpreferablyA iliade-withJ tlre two sides straight and theY endsrcurvedl-- Since' the-length-:ofwthe straight sides is merely arnatterfot the-adjust@ ment of the distances between'the two. tormssof af selected painand the curvature-l is :readily VariedV in puttingthefcoilsqintozplace, 'it has been found that lessl than V4a,.rl'o':ze1'l cdiierentwinding f formsrarelneeded?. 1to1- suppllyucoils. ci' the.` proper illustrated in-'thei accompanying drawings..

which Figurezl;iszai'sidezelenationof the winding.v

assembly 'securedfupona -shafti;.lig;.r2 isgaplanz.

view of. ithe;.tassembly looking :from .the-right ina 1;: Eigzg3fis; afragmentaryzplanviewaszseeni side elevationfoffeheesuding; earrieebioek .and of v the: holding '.block-:withcpartsi int sectionandwith one: of :the: guide-.barsjfof the]formfholdenbroken. aways. .f. r

In the dei/Tice.'illustrated,y alat base I .hasfftwoz standards. 2, v2', secured'theretO, asgby' VNivel-ding. these .standards being .spaced supportsto. 'holdi two parallel .guide barsg3. .and 4, whicha-re con: nected at their ends by curved portions 5, 5. .Be-` tween. thev bars arey three pairs. of. blocks; a..nor mally fixed pair.,V 6, 1., holding a-windingfform'-a. slidable pair. 8.,. 9, holdngcasecond winding, form.. and. a normally xed pair. tl), I. I.ser.vingxas:i a holding means fori the. releasing." mechanism :for the sliding form. i

Asbest seen in Fig.. 5., these Vbloclzsfhave side flanges to engageopposite faceso'fithe gudefbars', and when free, they can be slid lengthwise-ofthe guide. barsr for: adj ustmentz at any. desiredldi'stan'ce apart, preferably with the blocks I .and Sgatx'equal distances from the axis of rotationof' the basel.; which will be attachedto-Ia suitablerotaryshaft.A

The standards` 2, .2 engage the outerfaces and half of one side of the guide bars, as seeni-n Figl", and they are outof the` way ofthe flanges Ofthe blocks ifone desires-tofslide thempast-tl-ie'cen-ter ofthe guideway.-

G-'and 'I andthe winding form I13Lis carriedq'bythe blocks f8 and 9. Each ofthese formsv` has-ai4 threaded stud I4 which passesthrough perforations I5 in theblocks and'receivesfanutA -Iflwhi'chsecures the'form to the blocks; Y

Form1-2 is adjusted at a. predetermined` dis'- tance fromthe center-of rotation andis 'clamped securely in place `bytightening; the nut'jIl on 'the stud, the vlianges .of the. blocks beingftlfiereby brought into tight contact with the opposite. faces. of the .guidebars .before the ad'jcentfacesof thel blocks touch.eacliothen` Form I3 is. secured tothe blocksB-and,.lgfbyfits stud Maand nutI-B, butl as shown in 6, they blocks engage each other. bef-ore .the 'flanges clamp,` the guide barspsuiiicient.clearance :being left` to permtveasy sliding ofthe formtllwitl'i itsl blocks. toward .'andfrom fthe `form `yI 2'.'- The blocks`r mandi I I are tightly' clamped i'.o'thef-giuidel barsbyastudi I'I in: the block IU passing through a.` perforation. `I 8 inthe. "block-andi engaged Lluy-fa nut I9., preferably: belowithe oli-tersurfacefofl the block;.I.I when. large` forms are to/b'e used 'on-"th blocl:..l..V The spaceZ between theblocks A"Ml-and I'I -causesthe blocks to ybe secured against anyx sliding movement on the bars 3l-and i4 when the nur 19 is, tightened.

A. disk/21| ispivoted tothe iac'elro'f the"bloc'l'i""'I'Il` by aiscrew 22 .andlis provided with a-fingerpiece ze to. .causeparuai.rotauonfor themes. 'A

3 24 is pivoted at one end at 25 to the disk 2l and at its other end at 26 to the block 8.

In Figs. 3 and 6, the link 24 is shown in full lines as holding the block 8 away from the xed block I0. As the ngerpiece is used to turn the disk on its pivot, the link will swing sidewise as its pivot 25 rotates through about a quarter turn of the disk and then back for about another quarter turn,`wher,eit comes into contact with a stop membervZLfp-reventing further rotation of the disk.""'-'I'he block 3 will be pulled back from the full line position of Fig. 3, and with it,` the form I3 until they reach their .broken line posi-- tion, which is the operative position indicated in Fig. 2. It will be seen that the pivot 25 now-lies away from the block IB will cause the link to press more closely against the stop 21, yet very little force will be required to move the pivot sidewise across the dead center of the line to free the link 'when desired. The link 24 and the stop 21 hold the form I3 accurately in its adjusted position.

The forms I2 and I3 are. preferably made of a light metal or of a light metallic alloy. Each form has a stud I4 projecting from its base to attach .the form to the perforated blocks and also has arecess 29 to receive a pin 30 on the adjacent face of the block 1 or 9, the studs and pins serving to maintain the forms in a desired alignment, preventing them from shifting on the blocks..

, Each form has a series of concentric steps, usually four in number, decreasing in size from the base outward, each step having a flange 28 i to limit the widthof the coil wound on the step pair are determined experimentally on the basisof the measurements actually used in'commercial motors. The operator will be provided with tabulated information by which he can learn which specific pair of forms is to be used and the number of coils required for each pole for any specic motor to be rewound. Other information such vas the number of turns to a coil, wire gauges, coil lengths, etc. will be learned by examining the motor being repaired. Y

Selecting the proper pair of forms 'and adjusting 'them and their' blocks at the desired distances apart on the guide bars of the form holder, the operator passes one end of a wire of the proper gauge between the forms and secures it by two or three turns around the iingerpiece 23. The vwire is then drawn outward between the forms to the outer step and the required number of turns are wound forthe coil A. The wire is thenpassed across as at 3l to the next larger step for asecond coil B ,of the required number of turns and thenacross at 32 to the third stepA for the thirdl coil C. In many cases only. three coils areneeded but a fourth coil could, ofcourse,

be woundif desired, only three being shown. A'

tape or other suitable securing means .is wrapped around each side `ofeach coil in the space between the forms to hold the wire in place after the coils are removed from the forms.` The ngerpiece is released from the wire and pulled around to swing the link 24 and slide the blocks 8 and 3 with theform .I3 to the solid line posi- @1C-m. Of L,3, tlls being-amuch greater move-IL ment of the form than is necessary to allow the coils to be lifted over the anges 28 and off the forms. The wire will be cut at any convenient time to free the group of coils thus wound in tandem from a single wire. A push on the fingerpiece will return the form I3 to the same exact adjustment as before, ready for the next group of coils. There is no need for any changes in forms or in adjustments until the required number of groups offcoils for anymotor have been completed. v l

A coil winding assembly will usually be provided with a number of spare parts to replace anything not functioning properly. If the releasing mechanism comprising blocks I0 and II, disk 2| and link 24 are temporarily out of use. it 1s evident that the operator having two sets of 'blocks 6 and 1 can discard the blocks 8 and 9,

and can adjust the .two forms of a pair at the proper distance apart, each on a pair of blocks 5, 1, that can be clamped on the form carrier in fixed position by tighteningv the nuts I6 to hold the flanges rmly on the bars. I-Ie can then Wind a series of coils in the normal manner as just described and tape them for removal. (Then, by loosening either nut I6 enough to let the blocks held by thatnut slide in the guideway, the form carried by these blocks can be moved toward the other forrnto release the "coils, With the coils removed, the loose blocks will then be slid back to the proper place and the nut tightened to secure the form in place for another set of coils. Any suitable stop can be placed in the guideway to provider for the quick and accurate readjustment of the released form. Normally, the link 24 and the stop 21, in a very true sense. form a positive stop f or Athe block 8' to determine the desired adjustment of the form I3. y

In Figs. 1 and 4,' the base I is shown as attached to a similar member 33 formed upon or secured to the end of a shaft 34 which is rotated by any suitable means. As seen in Fig. 2, the base has oppositely arranged notches 35 for bolts 36, indicated in that figure in broken lines, these bolts holding the assembly base upon the member 33 for rotation by the shaft 34.

While the embodiment of the invention herein disclosed constitutes a preferred form, it is to be understood that it is not limited to the exact details described and shown since many changes may be made in the relative forms, sizes, and arrangement of parts without departure from the invention as claimed. Y

I claim: y K

A reel assembly comprising a Vbase rotatable about an axis, a pair of parallel bars supported yby the base and forming a guideway, a pair of perforated blocks slidable longitudinally of the bars for adjustment thereon at one side of the axis of rotation, the blocks having flanges engaging opposite faces of the bars,v a stepped winding form having a threaded stud in its base passing through the perforations inthe pair of blocks,

and a nut engaging the stud, the spaces between the flanges of the blo'cks being less than the thickness of the bars, wherebyV the blocks' will be" clamped to the bars when the nut is tightened on the stud, a second pair of perforated blocksl slidable on the bars on the other side ofthe axis of rotation from the first mentioned pair, a

stepped winding form having a threaded stud inv its base passing through the perforations in the second pair of blocks and a'nut engagingthe stud, .the-blocks having .flanges on opposite facesof the bars, the spaces between the flanges being,

6 REFERENCES omen The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 1,731,183 Thacker Oct. 8, 1929 2,046,883 Robbins July 7, 1936 2,143,315 Hanson Jan. 10, 1939 2,154,595 Weirich Apr. 18, 1939

Images