US3613348A - Flyer spindle for two-for-one twisting machine - Google Patents

Abstract

THE INVENTION PROVIDES A FLYER SPINDLE FOR A TWO-FOR-ONE TWISTING MACHINE WHEREIN THE TENSION ON THE YARNS BEING DRAWN OFF FOR TWISTING IS SELF REGULATED BY MEANS OF A MECHANISM INCLUDING A TENSIONING ROLLER.

Description

FLYER SPINDLE FOR TWO-FOR-ONE TWIS'IING MACHINE Filed June 24, 1969 G. G. COSTA Oct. 19, 1971 2 Sheets-Sheet l FLYER SPINDLE FOR TWO-FOR-ONE TWISTING MACHINE Filed June 24, 1969 G. G- COSTA Oct. 19., 1971 2 Sheets-Sheet 2 FIG.2

INVEN'IOR. 5.4 (057-4 United States Patent Int. Cl. D01h 7/86 US. Cl. 5758.86 4 Claims ABSTRACT OF THE DISCLOSURE The invention provides a tflyer spindle for a two-for-one twisting machine wherein the tension on the yarns being drawnoff for twisting is self regulated by means of a mechanism including a tensioning roller.

The object of the present invention is to provide a creel pin or fiyer spindle for a double-twist flyer frame, so constructed, that by virtue of the arrangement and nature of its component parts, it affords by comparison with fiyer spindles as hitherto used, amongst others, the following advantages: when drawing the threads or doubled yarns from the cop without twisting them throughout their length until they reach the draw-0E gear, they are held at a uniform tension; it is possible to use the arrangement with a horizontal carriage, together with the draw-off and pick-up gear; the bowls are so constructed and operated as to run at speeds of 2000-6000 r.p.m., depending on the kind of yarn being handled, corresponding to 4000-12,000 r.p.m. of the yarn in a double-twist frame, such speeds being attained with a large cop; complicated reeling arrangements in the creel can be dispensed with, for reversing or unwinding the spool when large cops of doubled yarns are being handled, while being able to arrange for (simultaneous) twisting on 3 to 4 spindles, thus being able to combine 3-4 twisted yarns into a single thread. All these advantages are obtained at speeds which have hitherto been considered impossible with such cops.

The particular feature of the flyer spindle in accordance with the present invention consists in that a rocking frame carries, in two supports or bearings, the elements holding the cop carrying the yarn to be twisted, comprising rotating spindles one of which is fixed, and the other longitudinally adjustable in order to adjust to the cop to be used; such a frame being fitted between two, horizontally-opposite hubs or end shields carried on axial bearings in oppositely facing supports, suitably in combination with a series of jockey rollers guiding the yarn to be twisted, which is thereby guided outside the said hub caps, over further tensioning rollers connected with a tensioning gear associated with a thread-tension meter and a compensating brake in such manner that if and when the thread tension becomes irregular, the cop (spool) is braked by acting on the adjustable spindle on which it is attached, so that the thread being unwound is always under the same reeling tension.

The characteristic features and advantages of a creel pin or flyer spindle in accordance with the present invention will be clearly apparent from the description now following under reference to the accompanying drawing representing an exemplary form of embodiment thereof.

FIG. 1 is a longitudinal section of a creel spindle in accordance with the present invention;

FIG. 2 is a cross-sectional elevation on a larger scale, along the line I IIHI of FIG. 1.

The flyer spindle according to the present invention ice consists of a rocking frame .1 fitted externally with a series of battens 2, reciprocally parallel and enclosing supports respectively carrying the bearing blocks 3 and 4 fitted on the cop spool 5, whereof 3 carries a ball-bearing 6 for a rotating, horizontal spindle 7 fitting into one end of the central bore of the spool, while the bearing block 4 carries a bearing 8 enclosing a rotating, threaded spindle 9 passing through the .bowl element 10 into which it is screwed and fitted into the other end of the bore of the cop spool; said threaded spindle 9, for ease of adjustment, is movable longitudinally in either direction by screwing in or out of the aforesaid bowl 10, and is rotated by a fixed pulley or sheaive 11, actuated by a belt drive (not shown in the drawing) through the intermediary of pulleys (rollers) 12, controlled by a hysteresis brake 13, the purpose of which will be explained presently. The housing 1 is held between the end shields, bowls, or end cones 14 and =15, carried on the spindles 16 and 17 respectively, with jockey guide pulleys or rollers 18, 19, 20, 21, 22, 23, 24 and 25, 26, fitted at suitable points, which guide the yarn 27 between the cop 5 from which it is drawn, and the draw-off gear; one of these pulleys 21 being a tensioning roller forming part of a tensometer device also incorporating a lever 28 (see FIG. 2) influencing a measuring device 29 linked with the hysteresis brake 13 acting on the combined pulleys 12 and 11 associated with the aforementioned belt drive, and thus controlling the rotation of the spindle 9, driving the cop spool 5 and thus ensuring that the latter, while the yarn is running oif, is maintained at a constant tension. Note that the movable pulley 21 is shown in two positions in FIGS. '1 and 2 The manner of action of the arrangement is as follows:

(1) The cop spool 5, fully charged with single or doubled yarns, e.g. coming from a Strader machine (in which the yarn has been spun), or any other machine supplying an untwisted, double yarn, is inserted therein and fixed in place by the holding spindles 7 and 9, for which purpose the spindle 9, previously screwed into the cupped element 10, is screwed back until it forces the spool to make contact with the other, fixed spindle 7.

(2) The yarn is run out by drawing the rod 30' on the creel body carrying the spool bearings 3 and 4, out wards until the turn of the yarn passing round the battens 2 reaches the jockey rollers 18, 19 and 20.

(3) Next, the yarn is passed around the tensioning roller 21 and over the roller 22 to the roller 23, thence over the outside of the bowls 15, 14 to the rollers 24', 25 and 26, through the spindle 16, in the direction of the draw-off mechanism, changing the passes to obtain the turns necessary for rotating the bowls 14, 15, which apply the double twist, while the housing 1 merely rocks or swings.

When the assembly is started the yarn drawn off by the appropriate mechanism, while running forward, is laid up with a double twist, running steadily oif the cop 5, and in the event of an irregular pull being exerted on the thread, the latter, in passing over the tensioning roller 21, influences the lever 28 operating the tensometer instrument 29, which in turn applies the hysteresis brake 13 with which it is linked, and through the belt pulley 12 brakes the pulley 11 on the spindle 9 driving the cop 5, thus regulating the thread tension.

It should be understood that while retaining the essential features of the arrangement it is possible to modify individual components and elements or introduce equivalent means, e.g. the spool-holding elements, the tensometer gear and breaking means, the latter being of the hysteresis type, hydraulic, magnetic or of other, suitable form, according to the circumstances of the individual case.

I claim:

1. A fiyer spindle for a double-twist flyer comprising a rocking frame or housing containing a first and second bearing means for holding a yarn spool, said first bearing means carrying a spindle to attach to one end of a yarn spool, said second bearing means carrying a spindle which includes a driving pulley therefor, belt control means extending about a portion of said driving pulley, a pair of end bowls positioned adjacent opposite ends of the rocking frame, bearing means rotatably supporting said pair of end bowls, a system of jockey rollers for guiding the yarn to be twisted from the yarn spool to the outside of said bowls, said system of jockey rolls including a tension roll within the space between said end bowls having an axle which is movable at right angles to the axis thereof, in proportion to tension applied by the yarn passing over said roll, a tensometer instrument adjacent said tension roll, means coordinating the tensometer with the position of the tension roll, and means connecting the output of said tensometer to said belt control means for said second spindle.

2. The flyer spindle as claimed in claim 1, wherein said belt control means is connected to said tensometer through a pulley which drives the belt control means and the spindle.

3. The flyer spindle as claimed in claim 1 wherein the spindle of the second bearing means comprises means for adjusting the distance between spool contacting end thereof and the spindle of the first bearing means.

4. The fiyer spindle as claimed in claim 1 wherein said end bowls are rotated to impart a double twist to the thread.

References Cited UNITED STATES PATENTS 81,753 9/1868 Clark 57-5834 407,522 7/1889 Furst 5758.34 697,437 4/1902 Boone 5758.36 2,567,329 9/1951 Frazier 5758.34 UX 3,142,952 8/1964 Krafft et al. 57-5832 3,349,553 10/1967 Hood 57--58.7

20 JOHN PETRAKES, Primary Examiner US. Cl. X.R. 5758.32

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