US2181267A - Reciprocating guide head for yarn packaging device - Google Patents

Description

Nov. 28, 1939. 2.181.,267

RECIPROCATING- GUIDE HEAD FOR YARN PACKAGING DEVICE w. J. ELYlN ET-AL Original Filed Aug. 50, 19:54

JEN.

JOSEPH L WSK WILLIAM J. ELVINAN BY W A ORNEYS.

Patented Nov. 28, 1939 i P TENT OFFICE RECIPROCATING GUIDE FOR YARN PACKAGING DEVICE William J. Elvin, Cumberland, Md., and Joseph 1 L. Killoran, Drummondville, Quebec, Canada, assignors to Celanese Corporation of America,

a corporation of Delaware Original application August 30, 1934, Serial No. 742,108, now Patent No. 2,048,787, dated July 28, 1936. Divided and this application February 13, 1936, Serial No. 63,731

3 Claims.

This invention relates to a yarn packaging device and more particularly to such a device that draws yarns from a package such as a bobbin,

imparts a twist to the yarn and winds the same 5 into a cross-wound package, such as a cheese. This invention relates particularly to the head of such a device including the driving and other mechanism for winding the yarn onto the crosswound package.

An object of the invention is a commercially practical device which will twist and package fine filaments or yarns such that the resulting package may be large, say 1 lbs., firm, free from tendencies to fluff at the ends and which is uniform in tension, without soft spots. Another object of the invention is a device so designed that the package formed thereon is uniform throughout. Other objects of the invention will appear from the following detailed description and drawing.

This application is a division of our application S. No. 742,108, filed August 30, 1934, which has issued as Patent No. 2,048,787.

. In the drawing wherein like numbers refer to the same or equivalent elements,

Figure 1 is a perspective view of a reciprocating guide head showing the driving means therefor,

Figure 2 is a side elevation in detail of the drive mechanism shown in Figure 1, and

Figure 3 is an end view partially in section taken on the line 88 .of Figure 2. r

In the cross-winding of packages, such as cheeses, the yarn is guided to the take-up package by means of a reciprocating guide member. This guide member reciprocatingtransversely to the direction of rotation of the take-up package directs the yarn or thread onto the package in a spiral form one end to the other and back. If the rate of reciprocation is constant relative to the rate of rotation, the point of reverse of the yarn will fall in ever so many cycles on the point of reverse of a former laid increment of yarn. In this manner a cross-wound package is formed the ends of which are not uniformly solid but contain hard spots where the points of reverse of the yarn are one above the other and soft spots where the points of reverse of the yarn do not occur. Some packages, depending upon the ratio of the traverse to the revolutions of the yarn, may contain the points of reverse in lines radiating from the center making a package very easily fluffed, i. e., increments of yarn forming arcs across the end of the package. These types of packages cannot be roughly handled nor even employed in certain types of textile operations.

In employing the device forming this invention, however, the ratio of the reciprocation of the guide means is not constant in respect to the rate, of rotation of the take-up packageand, therefore, the points of reverse do not fallin limited areas on the end of the package but are evenly distributed throughout the area. This forms a solid package that may be shipped or. otherwise handled and applicable to textile operations without fiufiing at the ends. This is accomplished not by a progressive change in the ratio referred to, which would lead to the same fault as a constant ratio, but by varying the ratio first to one side and then the other of a mean ratio;

In accordance with our invention, we have devised a method and device foraccomplishing the same that winds yarns into cross-wound packages, which packages are solid and free from ununiform ends. This device is designed for use in connection with the complete winding and spinning device shown in Figure 1 of the parent case.

For guiding the thread onto the'take-up package 55 there is provided a reciprocating guide member 2i that causes a cross-winding of the thread upon the package. It is desirable that the reciprocation, and thus the laying on of the thread upon the package, have a mean speed which is constant relative to the peripheral speed v of the take-up package, yet a speed that varies from faster to slower than the mean speed so that the points of reverse of the thread upon the package will not fall with too great a frequency upon the same or about the same axial line and resultin a package that has an ununiform end. This may be accomplished by the driving means for the cam that governs the reciprocation of guide 2|.

, The term yarn and thread are here used as substantially synonymous and may include fibers or filaments of any suitable materials such as filaments of organic derivatives of cellulose, regenerated or reconstituted cellulose, silk or mixtures of these or the yarns may be formed of fibers twisted or otherwise held together of cotton, wool, flax and the like.

In the drawing there is shown part of a device constructed in accordance with our invention, which device employs a simpleform .of a drive for imparting a variable reciprocation to thread guides 2|. This drive device is adapted for use on automatic twisting devices and especially on the type shown in Figure 1 of the parent case. 5

From any suitable source, and preferably from a source connected with the supply package drive mechanism, rotation is imparted to the shaft 33, upon which is mounted a friction-roll 23 that supports and turns the take-up package 55. The friction roll 23 may be of sufiicient length to support and rotate one or several take-up packages.

On shaft 33 is fastened a sprocket wheel M. Suitably journaled in the main frame is a shaft IIB lying parallel to and beneath shaft 33, said shaft II6 having fastened thereto a sprocket wheel In that registers with and is driven from sprocket wheel it by a sprocket chain Hi3, thus imparting a positive movement to shaft H6 in' timed relation to the peripheral speed of the take-up package 55.

Fastened on shaft M6 by means of a key H9 or other suitable means are two gears I28 and HI. Gear l2i! is slightly larger than gear IN.

A shaft 38 suitably journaled in a drum cam box that is a part of the main frame has fastened thereto a drum cam 81. The shaft 88 has mounted thereon and rotatable with respect thereto two gears 122 and W3 that register with and are driven from gears ill and lit, respectively. The diameter of gear I23 is less than the diameter of gear I22 50 that in registering with gears IEI and I20 the shafts H5 and 38 may be substantially parallel.

Fastenedto or made a part of gear I22 is an elliptical gear I2 eccentrically mounted on shaft 88. Gear 523 is formed with a bearing member I25 in which is mounted a shaft S26 adapted to rotate therein. The shaft 25 has fastened thereto as by a key I2? or made integral therewith an elliptical gear 428 mounted eccentrically of shaft I26 and in registry with and driving relation to elliptical gear ltd. On the opposite end of shaft I26 is a gear 529 fastened thereto by means of a key or other suitable means.

Keyed to, Or otherwise suitably fastened in driving relation to shaft 88 is a gear I30 that registers with and is in driving relation to gear I29 on shaft H6. The gear i353 imparts rotation to shaft 88 which in turn rotates drum cam 8?. On drum cam Sl there are two cam ways Q2 and 93 in the latter of which a roller pin Si is adapted to be guided. Pin 95 is suitably fastened to a slide head ti; that is fastened by adjustable rod 96 to the reciprocating thread guide holder rod 89.

The action of the drive mechanism is as follows: Shaft I56 is driven by sprocket chain H3 from the friction roller drive shaft 33. The two gear wheels I22 and I23 then rotate at slightly different speeds so that there is a relative motion between them to give one relative revolution for each complete cycle of traverse variation. The major and minor axes of the elliptical wheels may be chosen to give the required variation of traverse on either side of the mean speed. elliptical wheel 28 will one revolution for each revolution of the wheel 122 relative to the wheel i23. Since the wheels 28 and I29 are both positively fastened to the same shaft, it follows that the wheel I30 must make one revolution relative to the wheel I23 for each relative revolution of the wheel I22, but since the wheel Itt gets this motion through the elliptical pair of wheels, its speed will not be uniform. The net result is to superimpose a variable velocity onto the The uniform velocity of revolution transmitted to the wheel 523. The mean Velocity of revolution of the shaft 88 and the cam drum 81 will be the same as that of the wheel I22, but there will be a slow relative backward and forward movement of the shaft 88 with relation to the wheel I23.

It is to be understood that the foregoing detailed description is given merely by way of illustration and that many variations may be made therein without departing from the spirit of our invention.

Having described our invention, what we desire to secure by Letters Patent is:

1. In a machine for producing cross-wound packages of yarn, the combination with means for winding the yarn on the package at a constant speed, of means for traversing the yarn on the package comprising a shaft, a drum cam mounted on said shaft, a traverse guide rod adapted to be reciprocated by said drum cam, a second shaft driven through said winding means, a plurality of gears attached to said second shaft, floating gears supported on the drum cam shaft and adapted to mesh with the gears on said second shaft, and eccentrically mounted elliptical gears attached to said floating gears, said eccentrically mounted elliptical gears being adapted to rotate the drum cam, the construction and arrangement being such that the drum cam reciprocates the traverse guide rod at a variable speed.

2. In a machine for producing cross-wound packages of yarn, the combination with means for Winding the yarn on the package at a constant speed, of means for traversing the yarn on the package comprising a shaft, a drum cam mounted on said shaft, a traverse guide rod adapted to be reciprocated by said drum cam, a second shaft driven through said Winding means, a plurality of gears of different diameter attached to said second shaft, floating gears of different diameter supported on the drum cam shaft and adapted to mesh with the gears on said second shaft, and eccentrically mounted elliptical gears attached to said floating gears, said eccentrically mounted elliptical gears being adapted to rotate the drum cam, the construction and arrangement being such that the drum cam reciprocates the traverse guide rod at a variable speed.

3.1n a machine for producing cross-wound packages of yarn, the combination with means for winding the yarn on the package at a constant speed, of means for traversing the yarn on the package comprising a shaft, a drum cam mounted on said shaft, a traverse guide rod.

adapted to be reciprocated by said drum cam, a second shaft driven through said winding means, a plurality of gears attached to said second shaft, floating gears supported on the drum cam shaft and adapted to mesh with the gears on said second shaft, eccentrically mounted elliptical gears attached to said floating gears, and a gear attached to said cam shaft, said elliptical gears being adapted to rotate the drum cam through the said gear attached to said drumcam shaft, the construction and arrangement being such that the drum cam reciprocates the traverse guide rod at a variable speed.

l/VILLIAM J. ELVIN.

JOSEPH L. KILLORAN.

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