US3345001A - Pocket shroud for stator winding machine - Google Patents

Description

Oct. 3, 1967 M. J. STRAUS ET AL 3,345,001

POCKET SHROUD FOR STATOR WINDING MACHINE I Filed March 29, 1965 7 sheets-sheet 1 Oct. 3, 1967 M. J. sTRAuB ET AL 3,345,001

POCKET SHROUD FOR STATOR WINDING MACHINE Filed March 29, 1965 7 sheets-Sheet 2 Qct. 3, 1967 M, 1 STRAUS ET AL 3,345,001

' POCKET SHROUD FOR STATOR WINDING MACHINE '7 Sheets-Sheet 5 Filed March 29, 1965 u8 SHA FF A TTQRNEY;

1^' V ENTR :MELv/NJJTRA GERALD l1.

Oct. 3, 1967 M 1 STRAUB ET AL 3,345,001*

POCKETSHROUD FOR STATOR WINDING MACHINE Filed March 29, 1965 7 Sheets-#Sheet 4 TTQRNE Yr Oct. 3, 1967 M. J. STRAUB ET AL 3,345,001

POCKET SHROUD FOR STATOR WINDING MACHINE Filed March 29, 1965 v sheets-sheet 5 ArraR/VEYJ M. J. STRAUS ET A1. 3,345,001 POCKET SHROUD FOR STATOR WINDING MACHINE Oct. 3, 1967 '7 Sheets-Sheet 6 Filed March 29, 1965 B E wkn H M? vf.

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ATraRNEYs Oct. 3, 1967 M. J. STRALJB ET AL 3,345,001

POCKET SHROUD FOR STATOR WINDING MACHINE Filed MarCh 29,. 1965 7 SheeLS-Sheell '7 F/G. 9 FIG. IO

/NVEN Tok; MEL v//v J .fm/4 Us GERA Lo Il. JHA FF A g, Wwf/lim ATTORNEY:

United States Patent O 3,345,001 POCKET SHROUD FOR STATOR WINDING MACHINE Melvin J. Straub, Hopkins, Minn., and Gerald H. Shaif, Racine, Wis., assignors to Possis Machine Corporation,

Minneapolis, Minn., a corporation of Minnesota Filed Mar. 29, 1965, Ser. No. 443,351 9 Claims. (Cl. 242 1.1)

ABSTRACT OF THE DISCLOSURE A device and method for supporting and forming the ends of coils being wound onto slotted cores for electrical machines. The device has a shroud which is separable into two parts which form a pocket for receiving the ends of the coil. The shroud mounted on a movable carriage moves toward and away from the core yas well as radially with respect to the core. The shroud parts are locked together during the winding of the coil on the core. After the coil has been wound on the core, the shroud parts are separated with one part held on a temporary support. The carriage moves both shroud parts away from the core to separate the coil from the shroud. The shroud parts are then moved back into interlocking relation and moved back toward the core. When the shroud is adjacent the core it is moved in a radial or downward direction forcing the previous wound coreV to a position which does not interfere with the next coil wound on the core.

The present invention relates to a device for guiding wire while it is being wound into the slots of wire receiving cores of electrical machinery. More particularly this invention relates to the provision of pocket forming shrouds which are positioned on each side of cores being wound, and in alignment with one another which shrouds, after the coil has been wound, can be separated and withdrawn to release the wire coil so formed. When the shroud is returned to support the next coil, the shroud radially displaces a previous coil end to avoid overlap of coil ends. This invention relates also to a method of winding coils on slotted cores for electrical machines in which coil ends are supported and shaped as they are wound, released when the coil is completed and then radially displaced to allow the formation of an identical coil in adjacent core slots. Although certain types of machine cores have been wound with coils by machine for some time, stator cores having many slots, say 18 or more, involve problems in winding which have prevented any widespread machine winding.

The principal problem has been in providing shrouding for guiding a wire into the proper position for forming coils and many different approaches have been attempted. One which has been tried is a series of hooks or lingers so placed that coils could lbe wound on each slot without moving the iingers or the like until the entire core is finished. Then the fingers were unhooked from all the coils simultaneously. While this approach appeared to have promise when iirst devised, in actual practice the earlier wound coils held by fingers at a fixed radial position caused later wound coils to be wound in part on top of old coils. Winding coil ends `over each other tended to produ-ce a build-up or pile-up of coil turns at the coil ends which produced undesirable bulk as Well as inconsistent length in the coils wound. The mechanism necessary for manipulating fingers holding previously `wound coils out of the way of lingers remaining in position to -accept coils yet to be wound proved mechanically extremely diiiicult and econmically unfeasible. Accordingly, machine winding coils correctly onto stators having numerous slots has not been widely practiced.

ICC

Thus an object of the present invention is to provide an improved coil winding machine for electrical machinery elements and particularly stators. It is a further object of this invention to use a pocket formed by a guide shroud during the winding of a coil and then dividing the shroud to release the wire coil.

It is still yet a further object of this invention to provide a shroud dividing structure comprising: driven cam plates; a removable upper shroud part support; a spring loaded shroud lock pin, adapted to engage and lock said shroud, parts together slidably secured to a lower shroud part support; means for cam actuating said upper shroud part support with said driven cam plates; cam actuated means for raising the upper shroud part support; cam actuated means for raising the lower cam support; means for reinserting said shroud lock pin; and means whereby the shroud is repositioned by lowering it and placing it adjacent to the newly indexed slots.

Yet another object of this invention is to provide a stator coil winding machine and method that winds coils Yof very consistent length.

A still further object of this invention is to provide a coil winding machine that creates Very compactly wound stators.

Other objects of the invention will become apparent as the description proceeds.

To the accomplishment of the foregoing and related ends, this invention then comprises the features hereinafter fully described and particularly pointed out in the claims, the following description setting forth in detail certain illustrative embodiments of the invention, these being indicative, however, of but a few of the various ways in which the principles 4ot the invention may be employed.

The invention is illustrated by the accompanying drawings in which thesame numerals refer to corresponding parts and in which:

FIGURE l is a plan view and partial section of one shroud assembly and enough of a mating shroud assembly to show their cooperation; broken lines'show Ihidden parts and portions are broken away;

FIGURE 2 is a longitudinal section on the line 2 2 of FIGURE l and is drawn to the same scale as FIG- URE 1;

FIGURE 3 is an enlarged, fragmentary section of the shroud taken on the line 2 2 in FIGURE 1 with portions broken away to illustrate internal construction; broken lines show hidden parts;

FIGURE 4 is a view similar to FIGURE 2 but showing a different position of operation; broken lines show hidden parts;

FIGURE 5 is a similar View to FIGURE 4 showing another position of operation; broken lines show hidden parts;

FIGURE 6 is a view similar to FIGURES 4 and 5 showing still further position of operation; broken lines show hidden parts;

FIGURE 7 is a view similar to FIGURES 4, 5 and 6 showing yet a different position -of operation; broken lines show hidden parts; Y

FIGURE 8 is a sectional view taken `along the line 8 8 of FIGURE 2. and is drawn to the same scale as FIGURE 1;

FIGURE 9 is a sectional view taken along the line 9 9 of FIGURE 2 and is drawn to the same scale as FIGURE 1; and

FIGURE 10 is a sectional view taken along the line 10 10 of FIGURE 6 and is drawn to the same scale as FIGURE 1.

Referring iirst to FIGURE 2, as will be true throughout unless otherwise noted, carriage 15 is slidably secured to a frame 16 by any suitable means as for ex- 3 ample by the grooves 17 which may be machined into the carriage 15. The frame 16 is then provided with a way block 18 (see FIGURES 8, 9 or 10) which is rigidly secured thereto and fits the grooves 17` with a sliding fit.

A pair of cam plates 19 and 19a are slidably secured to the carriage as for example by the means of interlocking slide ways 21, best seen in FIGURES 8, 9 and 10. Each of the cam plates 19 is provided with a cam slot 23. In plates 19 and 19a are the slots 23 each which have an upper portion 23a and a lower portion 23b.

Means for selectively preventing relative motion between the carriage 15 and alternatively the frame 16 and the cam plates 19 and 19a is provided. In FIGURE 2 an illustrative means is shown to be a wedge lock 24 which is pivotably secured to the carriage 15 in any suitable manner as for example by the `pin 25. Rollers 26 and 27 are rotatably secured to the wedge lock 24 by any suitable means as by the pins Z8 and 29. A groove 30 of the same diameter as the roller 26 'but less than its diameter in depth, is provided in the frame member 16. A similar groove 31, of the same diameter but less than half the diameter of roller 27 in depth as the roller 27, is provided in the cam plate 19. The lower edge of cam plate 19 engages roller 27 causing roller 26 to remain seated in the groove 30 which locks the frame 16 and carriage 15 together against relative movement. When the groove 31 of cam plate 19 registers with the roller 27, the wedge lock 24 will then pivot upward, the roller 27 seating in the groove 31, and will release the locking engagement between the carriage 15 and the 'frame 16. The carriage 15 will then slide along with the cam plates 19 being locked thereto by reason of roller 26 engaging frame 16 exclusive of groove 30.

Conventional reciprocal driving means (not shown) is secured to plate 32 which may drive several units such as the one shown herein simultaneously. Any suitable well known -motor (not shown) moves plate 32 which is secured to the cam plates 19 and 19a by any suitable means, as for example, block 35 secured to both of the cam plates 19 and 19a. Shaft 33 and nuts 34 connect the plate 32 to the block 35. Screws as at 22 (see FIGURE 8) are suitable means to secure block 35 to cam plates 19 and 19a. Whenever the plate 32 is moved, therefore, the cam plates 19 and 19a also move either independently of or with carriage 15.

An upper shroud support 37 is to be provided and is movably secured to the carriage 15 here shown as pivoted in any convenient manner as by means of the pin 38.

Periodically the upper shroud support 37 is raised and lowered by cam action when the cam plates 19 and 19a move relative to the carriage. The links 39 which are pivotably secured to the upper shroud support 37 by the pin 40 are pivotally secured by the pin and bushing 44 to a set of links 41 which are pivotally secured at one of their ends to the carriage 15 by the pin and bushing 43. Rotating cam followers 42 are secured to the other ends of links 41. Rotating cam followers 42 engage and ride in the cam tracks 23. It will be apparent that as the cam tracks 23 are driven to the left relative to carriage 15 (FIGURES 2-7) that the cam followers 42 will b e successively forced from the upper cam tracks 23a to the lower cam tracks 23b causing the upper shroud support 37 to be raised. Movement of the cam plates in a reverse direction lowers the upper shroud support.

An elongated slot 45 is provided in the upper shroud support 37 and receives the cylindridal member 50. Two shafts 46 are slidably secured to the upper shroud support 37 by means of the holes 48 in which the shafts 46 fit. The shafts 46 are interconnected by both being secured to cylindrical member 50. Such a connection may be accomplished by inserting the shafts 46 through the rod 50 and pinning the shafts 46 thereto. Rod 50 forms a loose sliding t with the slot 45. Itis desirable to form the tip ends of the shafts 46 with a conical point 51 having an lannular groove 52 therein for a purpose to be described later herein.

A guide shroud assembly 53 is seen in detail in FIG- URE 3 and is comprised of: a skirt 54; a base member 55, which is secured to the lower shroud support 61 (in FIGURE 2); and a tapered locking tit 56 is secured to skirt 54. Skirt 54 is provided with two recesses 47 which approximate the tip dimensions of the shafts 46. The front end -of the recess 47 is closed by the slotted spring clip 57 which is threadably secured in the recess 47. Spring clip 57 is provided to grip the annular portion 52 of the shafts 46 so that accidential release of the skirt 54 is precluded. Locking tit 56 is provided with a slot 58, beveled at its bottom, to facilitate the insertion of the locking bar 59. The locking bar 59 is desirably formed as an integral part -of the shaft 60` that is slidably mounted in base member 55.

A lowershroud support 61 is pivotally secured to the carriage 15 to pivot about the same axis as is provided for pivoting the upper shroud support 37, viz., the pin 38. Lower shroud support 61 may be built-up construction as is represented by the sides 63 seen in FIGURES 9 and l0. Sides 63 are held together in spaced relation by spacer block 64 that is secured to the sides 63 by any suitable means such as the member 65. A second spacer block 66 is secured between and to the sides 63 of the lower shroud support by suitable means as by the member 67. A recess 68 in the lower face of the spacer block 66 and a corresponding recess 69 in the carriage 15 receive resilient means such as compression spring 70. This resilient means, inserted into the recesses 68 and 69, yieldingly urges lower shroud support 61 away from the carriage 15.

Mechanism for advancing locking bar 59 rides in slots 71 in each of the lower shroud support sides 63. Spring housing 72 is slidably mounted between the lower shroud support sides 63 with portions of the housing riding in the slots 71 as shown in FIGURE 10. Spring housing 72 is closed by an end plate 74. A plunger 75 is slidably secured within spring housing 72 and has a collar 76 secured to it. Suitable resilient means such as spring 77 is provided to urge the retaining collar 76 toward the shoulder 78 of the spring housing 72. Secured to, and aligned with, the plunger 75 includes a shaft 79 which engages a block 80 and is secured by pin 81 thereto. Rod 60 is secured to the block 80 by any suitable means such as inserting the rod 60 through a hole in block 80 with collar 82 on one side and nut 84 on the other. The structure provided will compensate for wear on the locking bar 59 by forcing the shaft 60 further out and into the slot 58 as the locking bar 59 becomes worn.

The bell-cranks 85, seen in FIGURE 4, are pivotally secured to the carriage 15 as at 86. At the upper end of the bell-cranks 85 are provided the curved slots 87. The rod 50 is slidably and pivotably secured to the bell cranks 85 by inserting the reduced ends of rod 50 in the slots 87. The cam followers 89 are rotatably secured to the lower ends of the bell-cranks 85 and disposed to ride within the cam slots 23.

When the cam plates 19 move to the left, relative to carriage 15 as seen in FIGURES 2 and 4, the cam followers 89 will be successively forced from the upper cam track 23a to the lower cam track 23b. This motion of cam followers 89 will cause bell-cranks 85 to pivot clockwise (as viewed in FIGURE 4) causing the shafts 46 to move to the right and tips 51 to be inserted into the shroud 53. Spring clips 57 will engage the annular grooves 52 on the tips 51 and thus retain the shafts 46 in skirt 54.

A second pair of bell-cranks 90` are pivotally secured to the carriage 15 as for example by means of the pin 91. The upper end of these bell-cranks 90 are provided with elongated slots 92. Spring housing 72 is pivotally and slidably secured to the bell-cranks 90 suitably as by the pins 93 which are secured to the spring housing 72 and disposed in the slots 92. At the opposite end of the bell-cranks 90 are cam followers 94 rotatably secured and disposed in the cam tracks 23. Y

As the cam plates 19 move still farther to the left, relative to carriage as seen in FIGURE 5, the cam followers 94 will move from the upper cam track 23a to the lower cam track 23b and cause the bell cranks 90 to pivot in a counterclockwise direction. This action of bell-cranks 90 will slide h-ousing 72 to the left and withdraw the locking bar 59 from the slot 58, freeing the shroud skirt 54 from the shroud base member 55.

As seen in FIGURE 6, still further movement to the left of shaft 33 causes additional movement of cam plates 19 and 19a relative to carriage 15 and cam follower 42 is forced into portion 23b of cam track 23. Arm 41 pivots down and pulls link 39 down when the 'follower 42 thus descends which pulls down on the rear end of upper shroud support 37 to raise shroud member 54 as shown. When the shroud is thus separated, it can be withdrawn without disturbing a coil end previously supported by it.

Referring again to FIGURE 42. and comparing it to FIGURE 6, the movement of the cam plates 19 and 19a will be seen to be enough to place groove 31 over wheel 27 of lock 24 or nearly so and bring the cam plates in close proximity to the end of carriage 15. Further left movement of shaft 33 tends to move both the carriage and the cam plates to the left which is possible, because lock 24 may now move up to release carriage 15- from frame 16 and secure the cam plates and carriage together. In this position the carriage is withdrawn from the core being wound to a distance suicient to clear the end of previously Wound coil.

An eccentricV 95, best seen in FIGURE 2, is rotatably secured as by shaft 96 to the carriage 15. Shaft 96 and eccentric 95 are pinned together. Anreccentric follower 97 embraces eccentric 95 and is suitably pivoted to the lower shroud support 61 as by the nut and bolt 98, best seen in FIGURE 9. An arm 99 is secured to the shaft 96 as by the pin 100 through both members. The free end of arm 99 has secured to it a bearing member 101, which is rotatably secured to the arm 99 as by headed pin 102. Forked arm member 103 is secured to the shaft 96 and is disposed so as to be in the same plane as the cam plate 19. A Wheel 104 is rotatably secured in the fork of arm 103 by any suitable means exemplary of which is the pin 105. Arm 110 (FIGURES l, 7 and 8) is secured in a stationary manner to frame 16.

When the carriage 15 is locked to the cam plates 19 and 19a and moves to the position shown in FIGURE 7, the rotatable bearing member 101 will engage the rigid arm 110. As the moving elements 16 and 19 travel further to the left the arm 99 will be rotated clockwise and the lower shroud support 61 will be lifted by the rotating eccentric 95. This occurs at the end of the stroke of the drive means 32 and the shroud assembly is reunited but in aV raised unlocked position. At this time the core is indexed to present a new Set of slots.

When shaft 33 Ibegins its stroke to the right the carriage 15 and cam plates 19 are in locked relation and move together. As the carriage and calm plates move toward the core, bearing member 101 is moved away from arm 110, but the lower shroud support remains elevated under the influence of spring 70 until the carriage has moved forward far enough to bring roller 26 of lock 24 over groove 30 in frame 16. At this time the shroud is near the core axially vbut is still in its elevated position so that it is radially spaced inwardly from previously wound coil ends. Further movement off shaft 33 to the right commences movement of the cam plates relative to the carriage, as lock 24 is now securing the carriage to the frame 16.

As soon as thecarn plate 19 moves to the right relative to carriage 15, wheel 104 is engaged by cam plate 19 and moved upward to the top surface of the cam plate which rotates shaft 96 counterclockwise. This motion of shaft 96 rotates the eccentric to lower the follower'97 and the lower shroud support 61 compressing spring 70 in the process. Simultaneously, the cam followers 42 ride up from the lower cam tracks 23b to the upper cam tracks 23a. Cam followers 42, moving as described, cause the links 41 to pivot in a counterclockwise direction viewed in FIGURE 5, about the pivot `43. This action lifts the links 39, which causes an upward force to be exerted on the left end of the upper shroud support 37. Both shroud supports 37 and 61 pivot together about the pin 3S in a clockwise direction to their original lowered position .a-s seen in FIGURE 5. As the shroud structure moves down, its lbottom engages the top of the previous coil ends and displaces them radially outwardly enough to allow a new coil to be wound with no coil end pile-up.

As shaft 33 urges the cam plates 19 further to the right, the cam followers 94- will be forced to the upper cam tracks 23a causing the bell-cranks 90 to pivot in a clockwise direction and reinsert the locking bar 59 into the slot 58 as shown in FIGURE 3. Shroud skirt 54 is now relocked to the shroud base member 55.

As the cam plates 19 move yet further to the right, the cam followers 89 will be forced to the upper cam tracks 23a causing the bell-cranks 85 to pivot in 'a counterclockwise direction. 'Ihis pivoting of the bell-crank 85 causes the shafts 46 to be withdrawn from the shroud 53 leaving an open pocket around which wire coils may be wound.

It will be seen, then, that when the shaft 33 completes its return stroke, shroud 53, which is reunited, is placed in position, as Shown in FIGURE 2, to guide the Iwinding ofv the next coil into the rotating electrical machinery element which has -been indexed during the shrouds release cycle to present fresh slots for winding.

Although only one of the pocket shroud structures has been shown and described in detail herein, it is to be understood that they Ifunction in pairs, and in FIGURE l a portion of a corresponding shroud wire coil end supporting mechanism 153 may be seen. Structure to support and operate shroud assembly 153 would be identical with that for shroud assembly 53. In addition, stator core, 12) may have more than one pair of shroud assemblies presented to it at one time so that coils may be formed simultaneously at more than one position on the stator core.

In FIGURE 1 a coil 115 is sho-wn Iformed around the shroud assemblies which would -be the rst coil wound in a given stator. This coil will be displaced when the second coil is wound in order to allow the second coil to be wound in an identical position relative to its stator slots as the rst coil to stator slots to which it Iwas wound.

Turning now to FIGURE 2 the end of the coil 115 can be seen to -be displaced radially outward of the stator core by the shroud assembly 53, as the shroud is positioned to wind the Second coil 116. As shown also in that ligure any suitable structure secured to frame 16 and designated here supports the st-ator core 120 in a stationary man,- ner while the coils are being formed on it. The core support 125 is turned by an indexing structure that is not inventive hence neither shown nor described herein.

When a number of coils are being Wound simultaneously at different locations, plate member 32 has a plurality of shafts comparable to the shaft of 33 secured to it so that all of the shroud `assem-blies that are actuated in an identical manner, as the various steps of the winding procedure take place.

'Ihe mechanism for winding the wire upon the shroud assemblies is neither shown nor described as it may be conventional. United States Patent 3,025,008 shows a suitable wire laying gun and driving mechanism for the gun to wind wire about a pair of shroud assemblies. The driving mechanism will carry a plural gun if several pairs of shroud assemblies are used, as the movement required is the same in each case.

It is apparent that many modifications and variations of this invention as hereinabove set forth may be made without departing from the spirit and scope thereof. The specic embodiments described yare given by way of example only and the invention is limited only by the terms of the appended claims.

What is claimed is:

1. A method of winding coils on slotted electrical machine cores using shrouds to guide and support the wire while a coil is being formed, each of the shrouds having a first portion and a second portion, said method comprising: supporting said shrouds adjacent to a sl-otted electrical machine core in alignment with one another on opposite sides of the core; forming a coil around the `shrouds and into selected slots in the core; temporarily engaging and supporting the first portion of each shroud at its end most distant from said core with temporary support means; disconnecting the shroud portions at their ends next to the core; separating the shroud portions; withdrawing the entire shroud from the core to disengage it from a `wound coil; moving one portion of each shroud to re-engage it with the ohter portion of the shroud at their ends nearer the core; indexing the core to a new group of slots; advancing the shrouds to a position adjacent to the core and radially spaced from a wound coil; moving the shroud into coil forming position and simultaneously displacing, radially, previously wound coil ends to make room for the ends of a coil to be wound; resecuring the shroud portions to each other at their ends nearest to the core; disconnecting and withdrawing the temporary support means; forming another coil; and repeating this procedure until all desired coils are wound.

2. Means for supporting and forming the ends of coils being wound onto slotted cores for electric machines comprising: a frame; a core supporting means on said frame; carriage slidably mounted on said frame; a cam means slidably mounted on said carriage; lock means movably secured to said carriage and alternately engaging said frame and cam means and thereby alternately locking said carriage to said frame and said cam means; means secured to said cam means for sliding said cam means to and fro with respect to said frame; a coil end support base member, means mounting said base member on said carriage for movement generally normal to the direction of sliding motion of said carriage relative to said frame; a coil end forming and supporting skirt portion, means separably securing said skirt portion to said base member at its end nearest -to an electrical core to be wound; a temporary support means movably secured to said carriage to move in a direction generally parallel to the direction the motion of said carriage relative to said frame and in a second direction substantially normal to the direction of motion said carriage relative to said frame; securing means movably secured to said coil end support base member alternately engaging and releasing said skirt portion; linkage secured to each of said temporary support means and said securing means; cam followers secured to each of said linkages and engaging said cam means; lever means secured to said support base member; stationary arm means secured to said frame at a point remote from the location of said carriage during winding and adapted to be engage-d by said lever means secured to said coil end support base member to move said wire guiding base away from said carriage; said lock means locking said carriage to said frame when said carriage is relatively close to an electrical machine core supported on said frame and locking said cam means to said carriage 'when said carriage is withdrawn relative to an electrical machine core beyond a predetermined point; whereby sliding said cam means `relative to said frame when said carriage is near a core moves said cam means relative to said carriage and moving said cam means when said carriage is removed from a core moves said cam means and said carriage together, said lever means engaged by said cam means when said carriage is moved near to a core to move said coil end support base member toward said carriage.

3. The structure of claim 2 wherein said means separably securing the skirt portion to the base includes a 'pierced locking tit on said coil end forming and supporting skirt portion that engages a well in said base member and means slidably mounted in said base member. to pass through the well thereof to engage and release said pierced tit selectively.

4. The structure of claim 2 in which said temporary support means comprises a pair of shaft members slidably mounted on said carriage to move generally parallel to the sliding motion of said carriage; apertures in said coil end forming and supporting skirt portion at the end remote from a core to be wound; said shaft members entering said apertures to engage and support said coil end forming and supporting skirt portion temporarily.

5. The structure lof claim 2 in which the linkage means for moving said coil end support base member generally normal to the direction motion of sai-d carriage; comprises: shaft means pivoted to said carriage; an arm means secured to said shaft and aligned with a portion of said cam means; a roller mounted on the end of said arm to engage a portion of said cam means; a second arm secured to and extending from said shaft and having a roller on its end lof; an arm xed to said frame and engaging said second arm roller; an eccentric secured to said shaft; and an eccentric follower embracing said eccentric; said eccentric followed being pivoted to said movable -coil end support base member said coil end support base member pivoted to said frame at a point spaced from said eccentric follower pivot.

6. The structure of claim 2 in which said `cam means comprises: a pair of spaced cam plates secured together and slidably secured to said carriage; each of said cam plates having a cam track therein having an upper portion, lower portion and a diagonal interconnecting portion; one of said cam yplates having a groove in its lower marginal edge to engage said lock means.

7. The structure of claim 2 wherein said means for selectively locking said carriage to said cam means and frames comprises: a triangular member pivotably secured to said carriage; at one corner thereof rollers rotatably secured to said triangular member at each of the remaining corners thereof; a groove in said frame of the same radius as said roller but less than one diameter thereof in depth; a groove in said driven cam means of the same radius as said roller but less than one diameter thereof in depth; said groove in said cam means being spaced from one end thereof a distance approximating the desired movement between said carriage and said cam means.

8. A means for forming and supporting an end of a coil wound on a slotted core comprising: a frame; a pocket forming base portion; means movably securing the base portion to said frame for movement both radially and axially with respect to a core to be wound; a pocket forming skirt portion; means separably securing the skirt portion to said pocket forming base portion at its end nearest to a slotted core to be wound; a separate movable support means for selectively engaging and supporting said pocket forming skirt portion; means for moving the support means linto engagement with said skirt portion and separating the skirt portion from the base portion; means secured to said frame for withdrawing said pocket forming base and skirt portions away from a core being wound when said pocket forming portions are separated; means secured to said frame and said pocket forming base portion for re-engaging said pocket portions after they have been withdrawn; means secured to said frame and said pocket forming portions to move both of them axially relative toward a core being wound and displaced radially from a coil supporting position; and means secured to said frame and said pocket forming portions for moving said pocket forming portions radially to a coil end supporting -position adjacent a core being wound after said pocket forming portions are correctly placed axially to support a coil end.

9. A device for guiding land supporting the end of a coil Wound into slots in an electrical machine core comprising a shroud assembly having a base and a skirt forming a pocket for receiving the end of a c-oil Wound on the slots of an electrical machine core; lock means separably securing the base and skirt together at their portions adjacent to the electrical machine core being wound; auxiliary support means movable to and from said shroud assembly for moving the skirt from the base and temporarily supporting the skirt; means for releasing said lock means whereby the auxiliary support means can move the References Cited UNITED STATES PATENTS 9/1960 Moore 242-1.l 6/1961 AGreene et al 242-1.1

FRANK J. COHEN, Prmaly Examiner.

Claims (1)

1. 9. A DEVICE FOR GUIDING AND SUPPORTING THE END OF A COIL WOUND INTO SLOTS IN AN ELECTRICAL MACHINE CORE COMPRISING A SHROUD ASSEMBLY HAVING A BASE AND A SKIRT FORMING A POCKET FOR RECEIVING THE END OF A COIL WOUND ON THE SLOTS OF AN ELECTRICAL MACHINE CORE; LOCK MEANS SEPARABLY SECURING THE BASE AND SKIRT TOGETHER AT THEIR PORTIONS ADJACENT TO THE ELECTRICAL MACHINE CORE BEING WOUND; AUXILIARY SUPPORT MEANS MOVABLE TO AND FROM SAID SHROUD ASSEMBLY FOR MOVING THE SKIRT FROM THE BASE AND TEMPORARILY SUPPORTING THE SKIRT; MEANS FOR RELEASING SAID LOCK MEANS WHEREBY THE AUXILIARY SUPPORT MEANS CAN MOVE THE SKIRT FROM THE BASE; AND MEANS FOR MOVING THE SEPARATED BASE AND SKIRT FROM THE COIL THAT HAS BEEN WOUND IN THE POCKET;

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