US2350928A - Yarn guide - Google Patents

Description

June 6, 1944. w. REINERs ETAL YARN GUIDE 3 Sheets-Sheet 1 Filed March 14, 1941 Sfefan Fu /67f,

s Sheets-Sheet is YARN GUIDE w. REINERS ETAL Filed March 14, 1941 June 6, 1944.

Patented June 6, 1944 YARN GUIDE Walter 'Reiners and Stefan Fiirst, Gladbaoh- Rheydt, Germany; erty Custodian vested in the Alien Prop- Application March 14, 1941, Serial No. 383,286

Germany March 16, 1940 8 Claims. (Cl. 242-458) The invention relates to a yarn traversing mechanism of the type in. which the motion of the yarn guide is derived from a wabble plate.

In some of the previously known arrangements, the yarn guide support, which is usually discshaped, is mounted on a separate shaft coaxial with the shaft carrying the oblique disc from which the wabbling or oscillating movement is derived. Occasionally it is found also that the two shafts are mutually displaceable in order to provide adjustment of the stroke. But in any case a number of articulations, connecting pieces and the like are required for the power transmission.

In accordance with one feature of our invention, a ring which carries the yarn guide or the and the yarn guide may be situated in the same plane or may be disposed outside of said plane. In the latter instance the yarn guide carries out a B-shaped movement, whereby, when the yarn guide is used as'auxiliary yam guide, the moving of the yarn through the crossing points of the grooves of the associated guide drum is favored.

Several embodiments of the invention are illustrated by way of example in the accompanying drawings, in which:

Figs. 1 and 2 are vertical sections at right angles to each other of a winding mechanism in accordance with the invention, showing a yarn guide on a ring journalled on a wabble plate.

yarn guides is mounted on 'a circular disc, preferably in a circular groove thereof, which in turn is obliquely mounted on the driving-shaft. In

' this arrangement, not only is the second shaft omitted but also any additional element for transmitting the oscillating movement to the yarn guide. Consequently the yarn guide will operate in absolute silence at any desired speed. In the construction according to the invention it is further possible for the first time, to impart an oscillating movement by means of oblique discs to any number of yarn guides, especially to the known auxiliary yarn guides in winding machines with driving drums having crossed grooves,

In accordance with another feature of the invention the ring journalled on the wabble plate is held against rotary movement about the axis of the drive shaft by a guiding devicein the form of a gimbal joint, comprising a yoke with arms pivotally connected to the ring at the extremities of one diameter thereof, the yoke being pivotally supported on an axis passing through the center of the ring perpendicular to the axis of the drive shaft. As'the wabbling movement would cause the ball bearing which interconnects the ring and the wabble plate to be stressed a]- ternately in two axial directions, the invention provides further a biasing of the bearing in one direction, so that it is stressed only in one axial direction and thus any slack movement in the bearing is avoided.

The utilization of a gimbal yoke makes possible the actuation of several yam guides from one and the same wabble plate, by arranging the yarn guides on the suitably lengthened oscillating shaft of the yoke.

According to the invention, the ring journalled on the wabble plate may be guided so as to rock in a plane containing'the axis of the drive shaft Fig. 3 is a vertical section of a winding mechanism showing a modified form of traverse mechanism in accordance with the invention.

Fig. 4 is a horizontal section of the mechanism shown in Fig. 3, through the axis of the drive shaft and looking upward, the parts being shown in a different position from Fig. 3.

Fig. 5 is a transverse vertical section of the mechanism shown in Figs. 3 and 4, with the parts in the position shown in Fig. 4.

Fig. 6 is a vertical sectional view of a modified form of traverse mechanism, showing in side elevation a pair of the actuating devices. Fig. 7 is a vertical sectional view transverse to the drive shaft of another modification designed particularly for a cop winding machine.

Fig. 8 is a vertical section of another modification for a cop winding machine, in the plane of the axes of the spindle and traverse mechanism drive shaft.

Fig. 9 is a front elevation of another modification for a cross winding machine.

Fig. 10 is a transverse vertical section of the mechanism shown in Fig. 9, and

Fig. 11 is a front elevation of the thread guide drum shown in Fig. 9, with a diagram of the coaction of the auxiliary traverse guide therewith.

As shown in Figs. 1 to 6, the yarn guide serves as auxiliary yarn guide in quick traverse winding frames in which the yarn laying is effected by means of a known form of driving drum having crossing grooves, whereas the embodiments illustrated in Figs. 7 and 8 show how the yarn guide can be employed in cop winding machines.

The cross-wound bobbin 8 is rotated by means of the grooved drum I driven through the intermediary of toothed wheels 2, 3 from a shaft 4, which shaft serves at the same time for driving the yarn guide or yarn guides. The shaft 4, the shaft 5 for the grooved drum, or both shafts may be common for several winding points.

embodiment bent upwards toward the drum I.

' With this construction the eye 8a moves along an l-shaped curve 38, as shown in Figs. 9 and 11, the accuracy of the yarn guiding being increased .thereby particularly at the places where it passes" through the crossing points of the grooves. In Fig. 11 the yarn positions due to the yarn guide 8 at diiferent transverse planes of the grooved the ring I from turning in the direction of rotation of the oblique disc 6. The laying of the yarn F by means of the yarn guide 8 and grooved drum I is effected in a generally known manner.

In the embodiment shown in Figs. 3 to 6, open bearing eyes iii of an oscillatablegimbal yoke l2 engage over the yarn guides 8 extending from opposite sides of the ring I, the pivot point H of said oscillatable yoke being journalled perpendicularly to the shaft 4 and-so that its axis extends through the centre of ring I. A spring it exerts a pull upon the oscillatable yoke l2 and thereby upon the ring I, so that the ball bearing Ia'is biased in one direction. Fig. 3 shows how the transmission of the wabbling movement can be utilized for the simultaneous astcuation of two yarn guides which cooperate with grooved drums mounted on opposite sides.

The biasing of the ball bearings Ia of a plurality of traversing units can be simplified, as illustrated in Fig. 6, by coupling every two oscillatable yokes In and I2! by a single spring. This i possible without any difiiculty if the yokes are disposed so that their open bearing eyes are directed towards each other, the alternate rings I being drawn to the right and to the left against their oblique discs 6, as in this case the biasing axial forces balance one another.

The derivation of the oscillating movement of any number of yarn guides from one and the same oblique disc is illustrated in Fig. '7. The pivot pin l4 of the oscillating yoke I2 of Fig. 3 is, with this object in view, replaced by a shaft ll of suitable length, on which the yarn guides i9 are fixed. These yam guides serve for building up cops K which are moved axially in a progressive manner by conventional means not shown in the drawings. This multiple arrangement of yarn guides may be applied in a similar manner also for quick traverse winding frames. that is in machines in which the traverse winding spindles are mounted at right angles to the longitudinal axis of the machine and parallel side by side. It is then immaterial whether the corresponding cross-wound bobbins are driven by circumferential friction, as shown in Figs. 1 and 2, or by direct spindle drive.

Another mounting of the yarn guides for a tubular cop winding machine is illustrated in Fig. 8. From the winding spindle 22 an oblique disc 25 is driven through the intermediary of spur wheels 23, 24, and the ring 26 carrying the yarn guide 21 is journalled between ball bearings. Said ring, similar to the embodiment illustrated in Figs. 1 and 2, slides along a guide 28 and is thereby secured against turning. The yarn guide 21 moves over the slit of the funnel 2! also in a generally known manner.

The embodiment shown in Figs. 9 and 10 corresponds substantially to that shown in Figs. 1 and 2, with the exception however that the shaft 4 is situated below shaft 5 but displaced in lateral direction, and the yarn guide 8 is not located -in the plane determined by shaft 4 and roller 9 but extends laterallyfrom the ring I in a plane which intersects in the axis of shaft 4 with the plane determined by shaft 4 and roller 9. The eye 8a of the yarn guide 8 is in this drum are shown, the-dash lines indicating the position of the yarn F without utilisation of the additional movement 30 and the full lines that position into which the yarn is brought by the yarn guide 8 when the same carries out the l-shaped additional movement. The diagram shows that the yarn securely passes the point of intersection, so that it is possible to operate at higher speed without danger of the yarn taking a wrong turn. The ratio of transmission between yam guide 8 and grooved drum I is 1:3; thus during a 60 rotation of the actuating shaft of the yarn guide 8, the grooved drum I therefore carries out a rotation of which means from one crossing of thegrooves to the next following crossing. The left hand and right hand extreme positions are reached by the yarn guide 15 sooner than the yarn in the grooved drum.

What we claim as our invention and desire to secure by Letters Patent of the United States is:

1. In a-yarn traversing mechanism, a ring and a wabble plate interconnected by hearing means, said means preventing relative oscillatory movement between said ring and said plate in a direction normal to the plane of said wabble plate, a drive shaft to which said wabble plate is obliquely fixed, guide means to hold said ring against rotary movement about the axis of said drive shaft. and a thread guide fixed to said ring.

2. In a yarn traversing mechanism, a ring and a wabble plate interconnected by hearing means, said means preventing relative oscillatory movement between said ring and said plate in a direction normal to the plane of said wabble plate, a drive shaft to which said wabble plate is obliquely fixed, guide means to hold said ring against rotary movement about the axis of said, drive shaft. while guiding the same so that one diameter thereof rocks in a plane containing the axis of said drive shaft, and a thread guide fixed to said ring.

3. In a yarn traversing mechanism a ring and a wabble plate interconnected by bearing means,

said means preventing relative oscillatory movement between said ring and said plate in a direction normal to the plane of said wabble plate, a drive shaft to which said wabble plate is obliquely fixed, guide means to hold said ring against rotary movement about the axis of said drive shaft, while guiding the same so that one diameter thereof rocks in a plane containing the axis of said drive shaft, and a thread guide extending from said ring in extension of said last-mentioned diameter thereof.

4. A yarn traversing mechanism as described in claim 1, wherein said guide means comprises a gimbal yokehaving arms pivotally connected to said ring at the extremities of one diameter thereof and pivotally supportedupon an axis passing through the center of said ring perpendicular to the axis of said drive shaft.

5. A yarn traversing mechanism as described in claim 1, wherein said guide means comprises a gimbal yoke having arms pivotally connected to said ring at the extremities of one diameter thereof and pivotally supported by a loose pivot upon an axis passing through the center of said ring perpendicular to the axis of said drive shaft, v and yielding means pulling upon said yoke in.

the direction of the axis of said drive shaft.

6. A yam traversing mechanism comprising two ring and wabble plate units as described in claim 1, wherein the guide means of each unit comprises a gimbal yoke having arms provided at their extremities with open bearing eyes pivotally connecting said arms to the appertaining ring at the extremities of one diameter thereof,

-said yoke being pivotally supported by a loose by bearing means preventing relative movement thereof except rotary movement in the plane of said wabble plate, a drive shaft to which'said wabble plate is obliquely fixed, said gimbal joint members being pivotally interconnected at the extremities of one diameter of said inner member, and said outer member being pivotally supported on an axis passing through the center of said inner member perpendicularly to the axis of said drive shaft, and at least one thread guide arm extending rigidly from one of said gimbal joint members away from the axis on which said outer member is pivotally supported.

8. A yarn traversing mechanism as described in claim 7, wherein the pivotal support of said outer gimbal joint member comprises a shaft from which a series of yarn guide arms extend.

WALTER REINERS. STEFAN FURST.

Images