US1951951A - Winding machine - Google Patents

Description

March 20, 1934. 1-1. SCHWEITER WINDING MACHINE Filed Dec. 29, 1932 2 Sheets-Sheet l March 20, 1934. scHWElTER 1,951,951

WINDING MACHINE Filed Dec. 29, 1932 2 Sheets-Sheet 2 Patented Mar. 20, 1934 UNITED STATES WINDING MACHINE Hans Schweiter, Horgen, near Zurich,

7 Switzerland Application December 29, 1932, Serial No. 649,387 In Germany January 26, 1932 'i' Claims. (Cl. 242-27) My invention relates to winding and the like machines, especially weft winding machines, and has more particularly reference to the yarn guide appliance of machines of this class. The object of my invention is a yarn guide appliance which,

when compared with known devices, is much simpler both as to construction and attendance, while at the same time the reciprocating motion of the yarn guide is considerably increased and the piecing of the yarn is simplified, the efiiciency of the machine thus being improved.

With these and incidental objects in view, my invention primarily consists in the fact that a yarn guide bar is provided to which an axial reciprocating motion is imparted, and which is provided with grooves, threads, or notches on which the oncoming yarn runs, while two stops are provided for the latter, independently of the reciprocating bar, the mutual distance of these 20 stops being adjustable in accordance with the stroke of the bar. In this way I obtain, so to say, a subdivision of the operation insofar as the reciprocating motion of the yarn is produced by one 'sole bar, while the length of the stroke and the position of the yarn relatively to the bobbin is determined by a separate device which is independent of the reciprocating bar, so as not to partake of the reciprocating motion of the latter. Consequently, the speed of the yarn guide bar may be theoretically an unlimited one, as, in contrast to the known devices in which the yarn guide consisting of several parts has to be reciprocated, it is merely this bar that makes a reciprocating motion. Furthermore, all of these yarn guide bars of a' machine may be actuated separately in dependence upon the appurtenant bobbin spindle gear, or groupwise, or also in unison and independently of the drive of the individual spindles. The adjustable yarn steps may be combinedwith a known feeling device in such a manner as to be advanced in accordance with the progress of the yarn winding work along the grooved yarn guide bar and thus entrain the oncoming yarn by shifting it from one groove to the other. These stops thus limit the reciprocating motion of the yarn and cause its passage from the one groove of the bar to the other, so that the yarn always runs on the grooved bar on that place which is fit at any instant for the formation of the conical shape of the bobbin.

The new idea my present invention is based upon'may be applied to all kinds of winding machines having a reciprocating yarn guide, immaterially of whether the bobbin revolves only on its axis or is also moved axially.

In order that my invention may be clearly understood and readily carried into effect, an embodiment of the same is illustrated by way of example in the accompanying drawings. As all essential features of my invention are to be seen therefrom, any person skilled in the art will be able to apply my invention also to winding machines other than that illustrated in the drawings. In the latter,

Fgure 1 is a lateral view, partly in section, of the'parts under consideration of a winding machine equipped with my new yarn guide,

Figure 2 is the corresponding top View, and

Figure 3 is a section on the line IIIl1I of Figure 2, seen from the left.

The machine illustrated is a so-called spindleless machine, that means a machine in which the bobbin 4 is arranged between two points 5 and 6. The latter is fixed to the front end of the shaft 8 mounted in the casing 7 and driven in the usual manner by a friction wheel 9. From this shaft 8 is derived, by means of a toothed gear 10, 11 the rotary motion of a cam disc 13 mounted on another shaft 12. By means of an entraining pin 14 in a groove in cam 13, reciprocating motion is imparted to a slide 15 guided in the gear casing '7. The slide 15 has connected to it, by a bar 16 likewise guided in casing 7, one end of a bar 17 which is provided with a plurality of guiding depressions in the form of annular grooves, threads, an-

nular notches or the like, and the other end of which is guided in the bracket 18 in parallel with the axis of the bobbin a. The bar 17 thus takes part in the reciprocating motion of slide 15.

A threaded spindle 19 is mounted likewise in parallel with the bobbin 4 on arms 20, which may swing on a shaft 21 interconnecting the casing 7 and bracket 18. In the screw spindle 19engages a feeling disc 22 which in known manner co-operates with the bobbin 4 and is shifted on the spindle 19 to the left in accordance'with the yarn winding operation. In this motion it entrains a bridge 23 on which an arm 24 carrying a yarn guide eye 25 is mounted. The bridge 23 further carries two stops 2'7 and 23 for the oncoming yarn 29, which 1 are adjustable in a slot 26 of bridge 23 and can be fixed in position. The yarn 29 is fed from a guide roller 30 mounted on the bracket 18. As may be seen in Figure 3, the stops 27, 28 are bent circularly about shaft 21 so as to be always the same distance from the yarn guide bar 17, independently of the position of the feeling disc 22 relatively to the bobbin 4, which position varies according to the thickness of the yarn and to the kind of the bobbin to be wound.

The described mechanisms operate as follows: The yarn 29 is supplied to the eye 25 by means of the guide roller 30 and runs at an acute angle over the bar 17 to the bobbin 4. Since the bar 17 has annular guiding depressions in the form of grooves, threads, notches or the like, the yarn partakes of the reciprocating motion of the bar whereby the cone of the bobbin is formed. The two stops 2'7, 28 assume a position with a mutual displacement H, which corresponds to the stroke H of the cam disc 13 and to the height of the cone of bobbin 4. Now, since the two stops 27, 28

are shifted to the left by disc 22 according to the growth of bobbin they take the yarn with them by shifting it gradually from one groove of-bar In the normal operation, the

itself the respective groove of bar 17.

As will be clear from the foregoing, both the yarn guiding operation in itself and the attendance of the winding machine are considerably facilitated by my invention, since instead of a reciprocating and stepwise advanced yarn guide, a reciprocating grooved yarn guide bar is used, whereby the advantage is afforded that a much higher yarn feeding speed can be employed than hitherto possible, whereby the efficiency of the machine is increased Upon breakage of the yarn, or'when the yarn ends or in starting the bobbin, the operator merely has to put the yarn between the stops 27, 28 which place it automatically'into the correct groove of bar 17. Thus, if the yarn has been placed in a groove which is upon the leftof the correct position, upon the movement of bar. 17 to the left, stop 2'7 will. limit the travel of the yarn while the bar continues to its limitingposition to the left, at which time the thread falls into the correct groove and travels together with the bar in its movement tothe right. On the other hand, if the yarn has been placed ina groove to the right of the correct position, in the movement of bar 17 to the right, stop 28 will shift the yarn to the correct groove while the bar 17 is traveling to its limiting position.

Therefore'much less loss of time is caused by the manipulations caused by the incidents mentioned than with theyarn guides hitherto used in which the yarn has to be put through the guide in a very troublesome manner.

As already mentioned, the grooved yarn guide bars 1'? of a machine may be reciprocated also in groups or in unison independently of the drives of the spindles and by special means, whereby the whole-construction of the machine is considerably simplified.

What I claim is: I

1. In a winding machine, a rotatable winding shaft having a winding spool mounted thereon, a thread guide bar having guiding depressions therein for engaging the yarn before the winding thereof on the spool, means for reciprocating said bar adjacent the spool on said winding shaft,

and means controlled by the winding on the spool for shifting the contact of the yarn with the guide bar to vary the position of application of the yarn to the spool.

thereof on the spool, means for reciprocating said bar adjacent the spool on said winding shaft,

a unit independent of said guide bar adapted to be moved by the growth of the spool, and stop arms on said unit for shifting the position of the yarn on said guide bar as the winding of the spool progresses.

3. In a winding machine, a rotatable Winding shaft having a winding spool'mounted thereon,

a thread guide bar having guiding depressions therein for engaging the yarn before the winding 35 thereof on the spool, means for reciprocating said bar adjacent the spool on said winding shaft, a unit independent from said guide bar adapted to be moved by the growth of the spool, a guide eye for the yarn on said unit, and adjustable stop 9 arms on said unit for shifting the position of the yarn arriving from said guide eye on said guide bar asthe winding of the spool progresses.

4. In a winding machine, a rotatable winding shaft having a winding spool mounted thereon, a threadguide bar having guiding depressions therein for engaging the yarn before the winding thereof on the spool, means for reciprocating said bar adjacent the spool on said winding shaft, a feeling unit independent of said guide bar adapted to be moved by the growth of the spool, and adjustable stop arms on said unit adapted to be mutually positioned in accordance with the stroke of the guide bar for shifting the yarn along the guiding depressions in said bar.

5. In a winding machine, a rotatable winding shaft having a winding spool mounted thereon,

a thread guide bar having guiding depressions therein for engaging the yarn before thewinding thereof on the spool,,means for reciprocating said bar adjacent the spool on said winding shaft, a radially movable feeling unit independent of said guide-bar adapted to be shifted axially in accordance with the growth of thespool, and adjustable stop arms on said unit for shifting the yarn1l5 along the guiding depressions in said bar, said stop arms being curved so that the distance thereof from said guide bar is the same for all positions of said feeling unit.

6.- In a winding machine, a rotatable windinglZO shaft having a winding spool mounted thereon,

a thread guide'bar having guiding depressions therein for engaging the yarn before the winding thereof on the spool, means .for reciprocating said, bar adjacent the spool on said winding shaft, 2. feeling unit independent of said guide bar adapted to be moved by the growth ofthe spool,..adjustable stop arms on said unit adapted to be mutually positioned in accordance with the stroke.

of the guide bar for shifting the yarn along the guiding depressions in said bar, and a guide eye on said unit substantially equidistant from said stops.

'7. In a winding machine, a rotatable winding shaft having a winding spool mounted thereon, a thread guide bar having guiding depressions therein for engaging the yarn before the winding thereof on the spool, means for reciprocating said bar adjacent the spool on said winding shaft, a. unit independent from said guide bar adapted to be moved by the growth of the spool, a guide eye for the yarn on said unit, and adjustable stop arms on said unit for shifting the position of the yarn arriving from said guide eyeon said-guide bar as the winding of the spool progresses, said guide eye being so disposed relatively to the guide bar and the winding shaft that the yarn running between these units forms an acute angle.

HANS SCHWEITER. 15c

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