US2972450A

US2972450A - Textile winding machine

Info

Publication number: US2972450A
Application number: US700794A
Authority: US
Inventors: Brierley Edgar
Original assignee: LEESONA HOLT Ltd
Current assignee: LEESONA HOLT Ltd
Priority date: 1957-12-05
Filing date: 1957-12-05
Publication date: 1961-02-21
Anticipated expiration: 1978-02-21

Description

1951 E. BRIERLEY 2,972,450

TEXTILE WINDING MACHINE Filed 1957 .5 Sheets-Sheet 1 1 I 32 36\ fti;

INVENTOR ATTORNEY Feb. 21, 1961 E. BRIERLEY 2,972,450

I TEXTILE WINDING MACHINE Filed Dec. 5, 1957 3 Sheets-Sheet 2 INVENTOR Edgar Brierl y BY A ATTORNEY 1951 E. BRIERLEY 2, 72,

TEXTILE WINDING MACHINE Filed Dec. 5, 1957 3 Sheets-Sheet 3 INVENTOR Edgar Brierley BY A ATTORNEY United States Paten f TEXTILE WINDING MACHINE Edgar Brierley, Rochdale, England, assignor to Leesona Holt Limited, a corporation of Great Britain Filed Dec. 5, 1957, Ser. No. 700,794

3 Claims. (Cl. 242-18) This invention of improvements in textile winding machines refers to high-speed winding machines for winding packages in which the package holder is pivotally or slidably mounted and is movable in a direction away from the driving shaft as the yarn package increases in diameter during build-up.

For convenience in the following description the term yarn will be used to indicate the material being Wound, it

means at predetermined rate from predetermined pressure contact on the yarn package.

A main feature of the invention is that no undesirable pressure is applied to the surface of the yarn package and the invention is therefore particularly advantageous in the winding of synthetic filaments.

According to the present invention the yarn package being wound is in rolling contact with a freely mounted weight-influenced roller which maintains a constant pressure on the yarn being wound.

As the package builds up and the diameter of the package increases the yarn package presses the weight-influenced roller back until it comes into contact with a friction wheel on a shaft in operative connection through a reduction gear with a reciprocatory rack in a gearbox, whereupon'the friction wheel is rotated and through said reduction gear the rack is moved forward and in doing so presses the pivotally mounted yarn package holder backwards and the roller following up under the influence of the aforementioned weight moves out of contact with the friction wheel so stopping the drive to the rack; in its forward movement the rack which is operatively connected to the disc drive of the yarn spindle moves the driving disc nearer to the outside diameter of the driven disc on the driving shaft of the yarn spindle whereby the speed of the driving shaft is decreased so reducing the spindle and yarn speeds. This action takes place periodically as theyarn package builds-up until when the package reaches a predetermined diameter a stop motion operates to disengage the driving disc from the main drive.

Stepped .pulleys on the driving shaft and the yarn spindle provide for two spindle speed ranges, and cone pulleys on the driving shaft and the traverse cam shaft provide for high or low traverse speeds.

After completion of winding and before winding can re-commence the rackmust be returned to initial position andthis is effected by releasing the rack from the gear box drive so that it is free to slide back when the spindle housing is returned manually to the initial winding position.

invention includes a package holder, or thread guiding means, secured on a spindle journalled in a long bearing". in a bracket or package arm pivotally mounted on a counter-shaft journalled in a housing on the frame of the machine; stepped pulleys on said spindle; stepped pulleys,

on said counter-shaft; a belt wrapping said pulleys; a

disc secured on said counter-shaft; and hereafter referredv to as the driven disc, a main driving'shaft located at right,

angles to the counter-shaft, and driven by any suitable means; a friction disc integral with a long boss by which it is mounted on said main driving shaft, the boss beingv keyed .to said shaft but free for limited sliding movement along said shaft, the friction disc hereafter referred to as' the driving disc being adapted to have driving contact with the driven disc on the counter-shaft and to be moved across the face of said disc to vary the speed of revolution of the driven disc; a spirally grooved cam housed in a cam-box located adjacent to and in parallelism with the package holder; a reciprocatory thread guide in operative association with said cam, the cam shaft extending in parallelism with the package spindle and the counter-1 determined by the movement of the driving disc across' the face of the driven disc on the counter-shaft, a roller freely mounted at opposite ends in a pair of substantially bell-cranked levers pivoted at their upper ends in brackets on the cam-box, each lever being furnished at its lower end with adjustable weights whereby the levers maintain the roller in contact with the yarn package, the weights being adjusted to give the required pressure of the roller against the yarn package which pressure remains constant throughout 'the build-up of the yarn package; a friction wheel fast on a shaft, and adapted to contact with the before-mentioned roller at the end adjacent to the package arm, the shaft projecting at its opposite end into a gear box where it is formed with a screw-thread engageable with a gear wheel forming one of a gear train providing a reduction gear; a rack slidably mounted in said gear box and at right-angles to the friction wheel shaft; the rack being provided with fine pitched teeth engageable by a gear wheel of the said gear train, whereby the rotary movement of the friction wheel, driven through the medium of the roller, drives the reduction gear which causes the rack to slide forward, when, its forward end abutting against the package arm, the movement of the rack pushes the package holder back about its pivot and so moves the package outwards at a predetermined rate as the yarn package increases in diameter during build-up, the roller following up the package breaks the driving connection between itself and the friction wheel and the movement of the rack is stopped; the rack is also connected to the friction disc on the main driving shaft through the medium of a linkage provided by an arm pivoted intermediately of its ends, one end of the arm being connected to the rack and the other end engaging with the boss of the friction driving disc whereby the movement of the rack causes the driving disc to slide along the main driving shaft and to be moved across the face of the driven disc on the counter-shaft whereby as the yarn package increases in diameter the driving disc slides nearreduction in the spindle'and yarn'speed.

The rate of movement of the package holder is con .Pat ented Feb. 21,1961

A textile winding machine according to the present The aforementioned mechanism works in conjunction.

with the usual stop motion mechanism for stopping winding on completion of a full package, or on failure of yarn, for example through breakage.

In place of the rack for moving the package arm a screw-threaded shaft formed with a fine pitch thread may be used, which is furnished with a gear wheel or a worm- Wheel fast on the shaft by which turning movement is transmitted to the shaft through the reduction gear train driven by the friction wheel.

Strung on the screw-threaded shaft is a bracket formed with an internally screw-threaded boss engaging with the screw-threaded shaft at the extremity of a vertical arm of this bracket there. is pivoted a lever, in the distal end of which is mounted a plate formed with two spaced slots, the slotted plate being secured to. two registering pegs projecting from the upper part of the package carrier, whereby a linkage is formed between the package carrier and the bracket on the screw-threaded shaft. Mounted at opposite ends in bearings on the gear box bracket is a guide spindle arranged parallel with. and spaced apart from the screw-threaded shaft. This guide spindle is slidably engaged by a guide member extending from the screw-threaded boss of the bracket engaging the screwthreaded shaft and provides a parallel guide for said bracket.

Rotation of the screw-threaded shaft as previously described causes the nut-forming screw-threaded boss of the aforesaid bracket to be traversed along the screw-threaded shaft and through the medium of the before-mentioned linkage the package holder is moved outwards at a predetermined rate as the package increases in diameter during build-up.

The invention will now be described with the aid of the accompanying drawings in which Figure 1 is a front view; Figure 2 an end view and Figure 3 a plan view of a schematic arrangement of mechanism according to the invention; Figure 4 is a side elevation, drawn to a large scale, of a gearbox, later to be described,

The same reference numerals indicate corresponding parts in the several figures of the drawings.

Referring to Figures 1, 2 and 3, '10 indicates the yarn spindle journalled in a long bearing in a housing 1 1 formed at opposite ends with

arms

12, 13 respectively, by which it is pivotally mounted on a driving shaft 14 journalled in a housing 15. 16 indicates a yarn package being wound on the spindle 10. 17 indicates a pair of stepped pulleys fast on the spindle 10, and '18 indicates a similar pair of stepped pulleys fast on the shaft 14, the

pulleys

17, 18 being wrapped by a belt 19. The shaft 14 is furnished at one end with a disc 20: hereafter referred to as the driven disc 20, which is adapted to be moved into contact with a driving'disc 21 integral with a long boss 22 by which it is slidably mounted on the main driving shaft 23 to which the boss 22 is keyed as indicated at 24 in Figure 3.

25 indicates a cam-box carried on the housing '15 and, located in proximity to the yarn package 16, and housing a grooved traverse cam of known form, the cam-shaft 26 of which projects through the end of the cam-box 25 in the direction of the main driving shaft 23 and is furnished at its distal end with a cone pulley 27. A similarand oppositely coned pulley 28 is provided fast on the shaft 14, the two coned

pulleys

27, 28 being wrapped by a crossed-belt 29, adapted to be shifted along the

pulleys

27, 28. by means of a belt-shifter indicated at 3t).

31 indicates a thread guide adapted to be reciprocated to-and-fro by the traverse cam to' lay the yarn indicated atY in Figure 2, from end to end of the yarn package 16.

32 indicates a roller freely mounted at opposite ends in a pair of substantially bell-cranked

levers

33, 34, each pivotally mounted at its upper end in

brackets

35, 36 respectively, carried by the cam-box 25.

The

levers

33, 34 are each furnished at its lower end with adjustable counter-weights whereby they maintain the roller 32 in contact with the package 16 at a constant pressure throughout the build-up of the package, one of said weights is indicated at 37 in Figure 2.

38 indicates a friction wheel fast on one end of a shaft 39 the oppositeend of which extends into a gearbox 40, illustrated more clearly in Figure 4. The shaft 39 is formed at the gearbox end with a fine pitch screwthread indicated at 39' Figure 4, by which it engages the teeth of a gear-wheel 41 mounted on a spindle 42 journalled in the top and bottom walls of the gearbox 40. The gear-wheel 41 is fast with a relatively long pinion 43 which meshes with a relatively large gearwheel 44v on a shaft 45 mounted for sliding movement in the wall of the gearbox 40, and in a plate 46 carried by pegs projecting from the wall of the gearbox 40. The shaft 45 is furnished at its inner end with'one element 47 of a clutch, the other element 48 of'which is fast on a short shaft 49 having its bearings in the wallof the gearbox and in a plate 50 carried by pegs projecting from said wall. A spring 51 encircling the shaft 45 and acting between the wheel 44 and the adjacent wall of the gearbox serves normally to maintain the two elements 47, 48 of the clutch in engagement, see Figure 4. Fast on the shaft 49 is a toothed pinion 52 enmeshed with the teeth of a large gear wheel 53 mounted on a shaft 54 journalled in the walls of the gearbox 40. The gear-wheel 53 is integral with a gear pinion 55, the teeth of which are engaged with the teeth of a toothed rack 56 slidably mounted in the gearbox 4t), and adapted to be pressed by its end 56' against the spindle housing 11 in certain conditions of use. The rack is in operative connection with the driving disc 21 of' the main driving shaft 23 through the medium of a linkage provided by a lever 57 pivoted at 58, one end of the lever 57 being slidably connected at 59 to the rack 56, and the opposite end engaging by a bowl 60 in an annular groove 22' formed in the boss 22 of the friction disc 21, see Figure 3, whereby movement of the rack 56 is transmitted to the driving disc 21.

The rack 56 is disconnected from the gearbox drive by means of a handle 61 pivoted-at 62and embracing by itsforked end the shaft 45 projecting from the gearbox 46. By raising the handle the forked end presses against a collar 63 on the shaft 45 and the shaft is forced downwards against the resistance of the springs 51 and the clutch element 47 is withdrawn from the clutch element 48 thereby leaving the rack free for return movement.

64 indicates a handle pivoted at 64' to the housing 15 and adapted to be pressed against the end of the shaft 14 to push the disc 20' into contact with the disc 21.

The operation of the mechanism, will now be described.

The requisite adjustments are made, i. e., by adjusting the weights 37- to give the desired pressure of the roller 32, the belt-19 is moved on the

pulleys

17, 18 to adjust the required spindle speed, and the belt29 is adjusted on the

cone pulleys

27, 28 to give the required traverse speed.

The disc 20 is brought into contact with the disc 21 by means of the handle 63 pressing the shaft 14 in the direction indicated by the arrow A,,whereupon the spindle 10 is rotated, the package carrier is tilted about the shaft 14 until the spindle housing 11 rests against the end 56' of the rack 56, see Figure 3, and winding commences.

The roller 32 is held in rolling contact with the periphery of the yarn package 16, and when the diameter of the yarn package reaches a certain point the roller 32 is pressed back until it comes against the friction wheel 38 and rotates said wheel. The consequent rotation of the shaft 39 rotates the. wheel 41 and through the reduction gear of pinion 43 wheel 44, clutch 47, 48, pinion 49, wheel 53, and pinion 55 motion is transmitted to the rack 56 to move it outwards in the direction of the arrow B. Figure 3, and so forces the spindle housing 11 back- Wards for a predetermined distance and thereby the yarn package 16. The roller 32 under the influence of the Weights 37 follows up the yarn package 16 and breaks the driving contact with the friction wheel 38 so stopping the rotation of the shaft 39 and the movement of the rack 56. During the outward movement of the rack 56, the lever 57 is rocked about its pivot 58 and causes the boss 22 and driving disc 21 to be slid along the main driving shaft 23 in the direction of the arrow C, Figure 3, so moving the driving disc 21 outwards across the face of the disc 20 thereby reducing the rotational speed of the disc 20 and consequently the spindle and yarn speed.

As the yarn package 16 increases in diameter during build-up it again presses the roller 32 into driving contact with the friction wheel 38 and the rack 56 is again moved to push back the spindle housing 11 and yarn package 16 as before, the driving disc 21 being progressively moved nearer to the outer diameter of the disc 29 so that as the speed of the disc 20 decreases it reduces the spindle and yarn speed correspondingly.

When the yarn package reaches its predetermined diameter a stop motion operates and disengages the disc 20 from the driving disc 21 and stops rotation of the yarn spindle.

The completed yarn package is then removed from the spindle 10.

Before winding can re-commence the rack 56 must be returned to initial position, therefore the handle 61 is raised to slide the shaft 45 outwards and disengage the clutch elements 47, 48 and the rack 56 is free to be moved back to initial position manually.

It will be seen from the foregoing description that the invention provides means for regulating the motion of a yarn package with increasing diameter by using the rotation of the yarn package to drive a lightly loaded feeler roller which in turn transmits motion to mechanism to move thepackage progressively as it builds up by positively feeding out the yarn package at a predetermined rate from predetermined pressure contact on the yarn package while at the same time the spindle and yarn speed is correspondingly reduced.

I claim:

1. In a textile winding machine for winding yarn or synthetic filaments into packages including a movably mounted package holder, a spindle for said holder, 21 traverse cam and reciprocating thread guide, means for rotating said package holder and traverse cam and means including a lightly loaded feeler wheel for regulating the motion of the package with increasing diameter by using the rotation of the package to drive the lightly loaded feeler wheel, a roller which in turn transmits motion to mechanism including a toothed rack to move the package as it builds up by positively feeding out the package at a predetermined rate from predetermined pressure contact on the package and at the same time progressively decreasing the spindle and traverse speeds in correspondence.

2. A textile winding machine as claimed in claim 1, which includes a toothed rack for positively moving said spindle away from said traverse, a driving connection for moving the toothed rack comprising a friction wheel intermittently driven by said roller and a reduction gear driven by said friction wheel.

3. A textile winding machine as claimed in claim 1 including a bracket for said spindle, a counter-shaft on which said spindle is mounted, a housing for said counter-shaft, a driven-disk on said counter-shaft, a main driving shaft at right angles to the counter-shaft, a driving disk slidably mounted on the main driving shaft and adapted to contact said driven disk, said traverse cam adjacent to and in parallelism with the package holder, said thread guide in operative connection with the traverse cam, a pair of bell-crank levers affording bearing for said roller and each pivotally mounted at its upper end in said bracket, said friction wheel contacting said roller and mounted on a shaft having at its opposite end a fine pitch screw-thread; a gear box affording bearing for said shaft; a toothed rack slidably mounted in said gear-box at right-angles to said shaft; a train of gearwheels housed in said gear-box and forming a reduction gear affording a driving connection between the screwthreaded shaft and the toothed rack; a clutch intercalated in said gear train; and a linkage between the toothed rack and the friction wheel on the main driving shaft.

References Cited in the file of this patent UNITED STATES PATENTS 1,544,257 McKean June 30, 1925 2,121,352 Holt et al. June 21, 1938 2,176,182 Kinsella et al Oct. 17, 1939 FOREIGN PATENTS 194,903 Great Britain Mar. 22, 1923 582,585 Germany Aug. 17, 1933 OTHER REFERENCES P.T.C. Bulletin of Power Transmission Council Inc., of 320 Broadway, N. Y., #181 of August 1953, article on Mechanical Variable Speed Transmissions by W. L. Byler, reprinted from Power, Figure 5 of Sheet 2.