US1357434A - Winding-machine - Google Patents

Description

J. C. ANDERSON. WINDING MACHINE- APPLICATION FILED APR. 23. 1920.

1 35 7,434, Patented Nov. 2, I920.

UNITED S ATES ATENT OFFICE;

JAMES C. ANDERSON, OF EAST ORANGE, NEW JERSEY, ASSIGNOR TO VARLEY' DUPLI] MAGNET COMPANY, A CORPORATION OF NEW JERSEY.

WINDING-MACHINE.

Specification 01 Letters Patent. Patented Nov. 2, 1920.

Application filed April 23, 1920. Serial N0. 375,990.

To all whom it may concern:

' Be it known that I, JAMES C. ANDERSON, a'

citizen of the United States, residing at East Oran e, in the county of Essex and State of New ersey, have invented certain new and useful Improvements in Winding-Machines, of which the following is a full, clear, and exact description.

This invention relates to machines for Winding strand material and has special reference to machines of the character described in my pending application, filed August 13th 1919, Serial No. 317,166. The machine referred to in said application is adapted more especially for the winding of copper wire into electrical helices, the wire of each helix being wound in superposed layers with an intervening layer or layers of sheet material, such as paper, separating the layers of'wire' from each other. A plurality of these helices are wound simultaneously upon a single spindle, the various wires for each helix being directed to the-spindle by suitable guiding rolls which are mounted successively upon a reciprocating rod. arranged parallel to the spindle, the movement of the rod and of the various guides carried therby, causing the wire to be spirally wound and a new layer to be started at each reversal of'movement. It has been found that at the ends of the layers where the direction of the guides is reversed, it generally happens that the pitch of the winding fails to reverse properly which results in a crowding of the wire at the beginning of the new layer. This result is largely due to the fact that, the

run of the strand from the guide to the spindle is inclined ahead of the pitch of the winding during the formation of the layer and at the reversal this forward inclination in'one direction must be converted into a forward inclination in the opposite direction necessitating extra movement of the guides. The object of the present invention is to insure a perfect reversal of the pitch at the end of each layer and it is accomplished by imparting to the reciprocating ed which carries the guides, an extra movejentat the moment the reversal takes place hat momentarily the pitch of the windis increased causing the wire to instantly and positively reverse its direction and start the new layer without any crowding of the convolutions. In the machine described in b the pending application the reciprocating rod upon which the guidesare mounted, is moved back and forth by a rotating cylindrical cam having a two direction endless track in its cylindrical surface. In the presplace so that the second movement is added to the movement caused by the cam track, to produce a momentary and more rapid movement of the guide rod at the beginning of each layer.

The invention will be described in detail in connection with the accompanying drawin in which: igure 1 is a plan of the cam, traverse rod and spindle of a winding machine.

Fig. 2 is a cross section on line a: a: of Fig. 1.

Fig. 3 is a longitudinal section of the controlling cam.

Fig. 4 is a detail.

Fig. 5 is a development in plan of the surface of the cam.

Fig. 6 is a diagrammatic illustration of the relative "positions of the strand at the moment of reversal.

Referring to the drawing, 1 indicates the winding spindle upon which are supposed to be wound simultaneouslya plurality of coils 2, only two of which are shown. 3 is a traverse rod upon which are fixed a plurality of hubs 4', each of which carries two guide rolls 5-6 from which the wire 7 to be wound is led to the rotating spindle. The traverse rod is mounted in suitable bearings 8 one of which is shown, and is adapted to reciprocate slowly back and forth and thus wind the wire '7 spirally and form the successive superposed layers of winding'in the respective coils 2. In order to reciprocate the traverse rod 3 it carries at one end a shoe 9 in which is mounted on the end of a stud 9 a block lO which enters a cam groove 11 formed in the surface of a cylindrical cam 12. The cam 12 comprises a shell to-the outer end of which is fixed a ear wheel 13 the latter being pinned to a s aft 14, mounted to'turn in a fixed bearing 15 secured to a frame member 16. The inner end of shaft 14 projects beyond the bearing, and is fitted with a collar 17 and is drawn continuously toward the frame 16 by a Spring 18 interposed between the collar and the bearing 15. The cam groove 11 is an block 10 traverses this groove and'as the cam is driven through its gear 13, the shoe,

together with the traverse rod 3 is caused to move first in one direction and then the other, the reversal taking place when the block 10 encounters thebend in the groove 11. This groove 11 provides for the regular and uniform reciprocation of the traverse rod.

Adjacent to the inner end of the camand bolted to the face of the frame 16 is a bracket 19 carryinga small roller 20 bearing against the inner end of the cam cylinder 12, the cam being held against the roller by the spring 18, the end of the cam thus forming a circular face upon which the roller runs. This track, at two diametrical points is provided with reversed shoulders 21 and 22 respectively. During the rotation of the cam these shoulders successively come into contact with the unyielding roller 20 and the cam .is forced to move in an axial direction a distance equal to the height of the shoulder, the movement in one direction being against spring 18 and in the other direction caused directly by the spring. This extra movement of the cam occurs the moment the block 10 changes its direction of movement in the cam groove and the rate and duration of the axial movement depends upon the inclination and length of the shoulder, which may be one or two degrees of the circumference of the cam. The shoulders 21 and 22 are so arranged with respect to the cam groove 11 that when the change of direction is imparted to the block 10, the axial movement of the cam augments the move ment of the block. That is to say, the traverse rod 3 at this instant is accelerated.

This causes the run of the wires 7 from the lower guide roll 5 to the spindle, to move to the oppositely inclined position more rapidly than would be the case if the cam were not given this extra movement. The result of the increased rapidity of movement of the strand is to insure the immediate reversal in the pitch of the winding and the' commencement of the new layer without any crowding of the turns at the beginning of the new layer. 2

In Fig. 6 the angle through which theleading strand is swung solely by the bend in the cam track 11, is indicated by ail) 0.

But as the str and runs aheadpf the pitch slightly as indlcated by at b d, it is necessary in reversing to swing the strand through vthe.

angle 03 b 6, so as to cover a b c+d b a-l-c b c. The rapid and extended swing of the wire leads from one incline to the other prevents the piling up of the convolutions by momentarily increasing the pitch of the first few turns. The extra-movement imparted byroller 20 is represented by d b a-l-c b e.

Obviously the means for imparting the movement of translation to the cam 12 may .be modified within considerable limits without departing from the invention, .one obvious modification being to mount the roller 20 upon the cam and provide a circular track with the shoulders 21 and 22 upon the fixed frame. ,7

I claim:

1. In a machine for winding strand mate rial, the combination of a winding spindle, strand guides having a movement with respect to the spindle to form superposed laymovement at v of the ers of winding upon the spindle and means for momentarily altering the normal rapidity of said movement at each reversal in direction thereof. f i

2. In a machine for winding strand material, the combination of a winding spindle,

strand guides having a movement with respect to the spindle to form superposed layers of winding upon the spindle and means for momentarily increasing the normal rapidity of said movement at each reversal in direction thereof.

3. In a machine for winding strand material, the combination of a winding spindle, strand guides having a reciprocating movement to form superposed layers of winding upon the spindle and means for momenta.- rily increasing the normal rapidity of said 7 -each reversal in direction thereof.

4;. In a machine for winding strand material, the combination of'a winding spindle,

a reciprocating rod for'directing the strands to-form*layers upon the spindle and means for increasing the normal rapidity of move- 1 ment of the god momentarily at thebegin-v ning of each traverse.

5. In a machinefor winding" strand material, the combination of a winding spindle,

means forwinding the material spirally in superposed layers upon the spindle and means for momentarily increasing the pitch winding at the beginning of ,each layer.

6. In a machine for winding strand material, the combination of a winding spindle, a

layer forming guide and a cam for imparting a reciprocatory movement to the guide,

said cam having two movements, one rotary and the other of translation.

7. In a machine for winding strand material, the combination of a winding spindle, a layer forming guide and a cam for imparting a reciprocatory movement to the guide,

said cam having two movements, one continuously rotary and the other of translation and momentary.

8. In a machine for winding strand material, the combination of a winding spindle, a layer forming guide, a cam controlling the moyements of the guide, said cam havinga track adapted to reciprocate the guide and 9. In a machine for windingstrand material, thecombination of a spindle, a layer forming guide, a cylindrical rotary cam having a cam track in itscy1indrical surface adapted to cause the reciprocation of the guide and means" for periodically moving the cam in an axial direction to augment the efiect of the track upon the guide.

my Signature.

10. In a machine for winding strand ma 7 terial, the combination of a winding spindle, layer forming guide, a cylindrical rotary cam having a cam track in its cylindrical surface adapted to cause the reciprocation of the guide and means for moving the cam in anaxial direction at each reversal of direction of the guide to augment the efie ct of the track upon the "de.

In Witness whereof, hereunto subscribe JAMES cl ANDERSON.

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