US1580086A - Traverser mechanism for coil-winding machines - Google Patents

Description

April 6 1926. 1,580,086

D. MACADIE TRAVERSER MECHANISM FOR COIL WINDING MACHINES- Original Filed Jaxi; 16, 192: 2 Sheets-Sheet 1 N X a l NV E NTO R:

Dona h/ Macad/c Bfi/ u flayuW -Mu ATTORNEYS- D. MACADIE TRAVERSER MECHANISM FOR COIL WINDING MACHINES April 6 926.

Original Filed Jan. 16. 192.3 2 Sheets-Sheet 2 my :4 a

wOMMIR T o N fi V 0 M .IflB

' Patented 6, 1926.

' UNITED STATES DONALD KACADIE, OF LONDON, ENGLAND, ASSIGNOR TO THE. AUTOMATIC COIL WIN DER ELECTRICAL EQUIPMENT BRITISH COMPANY- COMPANY LIMITED, 01 LONDON, ENGLAND, A

TBAVERSER mncnamsm FOR corn wmnmo macnmns.

Original application filed 1m 10,.

To all whom it may concern: v Be it known that I, DONALD MAcanIn, subj ect of George V, King of Great Brltam and Ireland, residing at 109 Bowes Road.

v Palmers Green, London, N. 13, England, have invented new and useful Improvements in- 'Traverser Mechanism for -Coil-Winding fMachines, of which the following is a specification. This application is a division of my co pending application 613,019, filed Jan. 16, 1923. for a coil winding machine which.automatically stops working when a predetermined length of wire corresponding to a given resistance has been wound on thebobbin and in which means are provided to vary the speed of reciprocation of the traverser arm relatively to the speed ofrotation of the bobbin to be wound so that different thickness of wire'can be wound with their convolutions close together. Theobject of this invention is to provide improved traverser mechanism by means of which the length of the layers wound on the. bobbin may be accurately controlledand the said layers wound close up to the cheeks of the bobbin. w I

In the drawings,

Figure 1 is a front elevation'of the major part of a coil-winding machine having embodied therein the improved traverser mechanism according to this invention, and

Figure 2 is substantially a plan of the same.

Figure 3 is a transverse section of the coilwinding machine and shows the mechanism for leading the wire to the bobbin to be wound and for reversing the motion of the traverser arm.

Figure 4 is a front elevation on an enlar ed scale of the mechanism for reciprocatmg the traverser arm, and

Figure 5 is a transverse section of such mechanism. \p

Referring to the drawings and dealing first with the general construction of the machine, a isthe base-plate, b is the motor j the traverser arm which causes the wire to 1923, Serial No. 613,019. Dividd and this 22, I925. Serial No. 64,142.

application filed October travel along the bobbin while it is being \wound on the latter. I) is a driving disc secured on the motor Spindle and arranged to drive, through the medium of a rubbershod wheel 6, a driven disc or follower d which is fast on the leading-screw d. This variable drive between the motor and the .leadlng-screw forms the subject matter of my 00- ending application Serial No. 613,- 019. T e bobbin to be wound (not shown) is supported between the chuck b of the motor and the centre 0 of the tail-stock.

- Referring now to the construction of the traverser mechanism, mounted on a rotatable guide rod 70 are two adjustable sliding stops '5? and 7c firovided with forwardly projectmg arms 8 and k respectively, (the righthand arm k having been omitted in Figure 2 for the sake of clearness). The downwardly directed .extremitiesof the arms are set in close engagement with the inner faces of the checks of the bobbin and the stops k and k are then secured firmly to the guide rod la by means of clamping nuts k and la. The arms are now turned upwards and backwards so as to be out of the way of the traverser arm.

Mounted to slide, by means of a sleeve is on a fixed guide rod 70 and also on the rotatable rod k are two small posts 7: and k and a cam lc in the form of a double inclined plane. in is a pin which can slide horizontally in the posts 77 and 70 and is provided with an arm 70 of which the portion 70 is undercut on opposite sides so as wards. The two cams are kept in close,

sliding engagement with one another by means of a tension spring 70 connected at its ends to the arm 70 and a stationary pin k respectively.

The cam is which is somewhat stirrupshaped at its lower end, is pivoted on t e pin 7: and also has fixed thereto a double arm 70". I v

The double arm k" is provided at its ends with half-nuts 70 and 70 respectively. The

leading-screw is provided with two screwthreads of opposite hand with which the two said half-nuts respectively and alternately engage. f

As the leading=screw rotates it 'causesthe half-nut which is in engagement therewith to move along the correspondin thread and at the same time carries the eeve 70' etc., alon with it. Assuming that the posts k and are caused by the leading-screw to move to the right, the pin is Wlll presently come into engagement with the left-hand end of the etc 70 with the result that the pres-.

" the leading-screw and depressing the other half-nut into engagement with the leading screw.

The sleeve k" is now caused to move in the opposite direction until thepin is engages the'right-hand end of the stationary stop k whereupon the pin 70 and the double-arm c" are causedto return to their former positions by reason of the cam Z0 passing back over the cam is. These operations are repeated until the bobbin is fully wound.

By setting the downward extensions of the arms 10 and it hard up to the bobbin cheeks the windings can be brought close up tosuch cheeks. The inner ends of the stops it and k are provided with adjustable nuts k to allow for easy original adjustment of the machine and to compensate for wear.

The wire is led to the bobbin betweena pair of thin steel plates 70 carried by the traverser arm is which, by means of its rearwardly extending limbs 70 is pivoted on the sleeve is. These limbs can, by means of a screw 74, be adjusted to any desired degree of tightness against the shoulder 70 (Figure 4:). The sleeve k is adjusted to work slidingly on the rod k without shake by means of nuts k screwed on to its split ends. The traverser arm rests on a somewhat U-shaped trailer k the underside of the limbs of which are recessed so that said limbs can rest loosely on and be readily lifted free of the rod 70 The trailer 70 has an arm is the underside of the nose of which is provided with a pad 7: which rests is caused to trail by reason of the nuts 70 on the 0011. One of the limbs of the trailer is extended rearwardl and is provided with a counterpoise 72 which can be adjusted inat opposite ends of the sleeve k alternately engaging the limbs of the trailer as the traverser arm reciprocates. When the latter reof the trailer.

verses, the trailer remains stationary until the arm has moved to its other side, that is, until the nut ls** at the advancing end of the sleeve 70 engages the adjacent limb At this period the trailer also commences to reverse. Thus, at all positions of the traverser arm, the pad 70 remains in contact with a substantial number of turns of the last-wound portion of the bobbin. The pad 70 also serves to prevent dental break occur in the wire, and the machine stops.

In order to enable both of the half-nuts to be freed from the leading-screw so as to permit the traverser arm to be moved sideways freely and set to the desired position,

the rearward extremities of the limbs 70 are each provided with an eccentric surface, as shown at k*** in Figure 3. Thus, when the traverser arm'is swung up into about the vertical position, the eccentric surfaces press on the double arm 1: on opposite sides of the centre 70 and, as they are made of similar shape or throw, they act in antagonism to the springlc and centralize the cam 70 thereby bringing the double arm is" to the horizontal position and holding the halffaces of the cheeks of the bobbin to be wound, traverser mechanism and means in operative engagement with said traverser mechanism adapted to engage the said slidmg stops to reverse the said traverser mechanism.

2. In a coil winding machine, traverser mechanism characterized by a slidable 'carriage having pivoted thereon the traverser arm and also having pivoted thereonla bracket the upper portion of which is in the form of a double inclined plane constituting a tilting cam and the lower portion of which has secured thereon a double arm carrying halfnuts at its ends, a screwed shaft,.adapted to be alternately engaged by said half nuts, a pin longitudinally movable in the bracket and carrying a double inclined plane adapted to co-operate with said cam, a guide rod, two adjustable sliding stops on said guide rod, projecting armson said sliding stops having downwardly directed extremities adapted to be set in close engagement with the inner faces of the cheeks of the bobbin to be wound, the arrangement being such that the alternate engagement of the ends of the said pin with the said stops causes the double inclined plane on the said pin to move from one'side to the other of the tilting cam and thereby cause the double arm. to

75 uncoiling of the winding should an accidis-engage the other half-nut from the screwed shaft.

3. In a coil winding machine, traverser mechanism characterized by a slidable carriage having pivoted thereon the traverser arm and also having pivoted thereon a bracket the upper portion of which is in the form of a double inclined plane constituting a tilting cam and the lower portion of which has secured thereon a double arm carrying half-nuts at its ends, a screwed shaft adapted to be alternately engaged by said half-nuts, a pin longitudinally movable in the bracket and carrying a double inclined plane adapted to co-operatewith said cam, a'guide rod, two adjustable sliding stops )n said guiderod, projecting arms on said sliding stops having downwardly directed extremities adapted to be set in close engagement with the inner faces of the cheeks of the bobbin to be wound, the arrangement being such that the alternate engagement of the ends of the said pin with the said stops, causes the double inclined plane on the said pin tomovefrom one side to the other.

of the tilting cam and thereby cause the double arm to rock so as to engage one half nut with and dis-engage the other half-nut from the screwed shaft, a trailer combined with said traverser mechanism andhaving a nose adapted to'bear on the wire in process of being wound on the bobbin, and'meane to cause said trailer to lag behind" the traverser arm. 7 Y

4. In a coil winding machine, traverser mechanism characterized. by a slidable-carriage having pivoted thereon the traverser arm and also having pivoted thereon a bracket the upper portion of which is in the form of a double inclined plane constitutinga tilting cam and the lower portion of which has secured thereon a double arm-carrying half-nuts at its ends, ascrewed'shaft, adapted to be alternately engaged by said halfnuts, a pin longitudinally movable in the bracket and carrying a double inclined the said stops causes the double inclined 7 plane on the said pin to move from one side to the other of the tilting cam and thereby cause the double arm to rock so as to engage one ha'lf-nut with and dis-engage the other half-nut from the screwed shaft, and cam surfaces on said traverser arm which can be brought. into engagement with the double arm for the purpose of freeing the halfnuts from the screwed shaft.

5. In a coil. winding machine, traverser mechanismcharacterized by a slidable carriage having pivoted thereon the traverser arm and also having pivoted thereon a bracket the upper portion of which is in the form of a double inclined plane constituting a tilting cam and the lower or-tion of which has secured thereon a dou le arm carrying half-nuts at its ends, a'screwed shaft adapted to be alternately engaged. by said half-nuts, a pin longitudinally movab e in the bracket and carrying a double inclined plane adaptdownwardly Y directed extremities 7 adapted to be set in close engagement with p the inner faces of the checks of thebobbin to be wound, the arrangement being such that the alternate engagement of the ends of the said in with the said stops causes the double inclined plane on the said pin to move from one slde to the other of the tilt-' ing cam and thereby cause the double arm to rock so as to engage one half-nut with and vdis-engage the other half-nut from the screwed shaft, a trailer combined with said traverser mechanism and having a nose adapted to bear on the wlre in process of being wound on the bobbin, means to cause said trailer to lag behind the traverser arm, and cam surfaces on said traverser arm which can be brought into engagement with plane adapted to co-operate with sa-id the double arm for the purpose of freeing cam, a gulde rod, two adjustable slidthe half-nuts from the screwed shaft.

ing sto s on said guide rod, projecting arms on em p I directed extremities adapted to be set in close sliding stops having downwardly Intestimony whereof I have signed my name to this specification.

DONALD MACADIE.

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