US3112083A - Revolving tube drive for winding a fibrous strand on cross wound bobbins on drawing frames - Google Patents

Description

Nov. 26, 1963 G. WERNER 3,112,083

REVOLVING TUBE DRIVE FOR WINDING A FIBROUS STRAND ON CROSS WOUND BOBBINS ON DRAWING FRAMES Filed June 15, 1962 g [fryer/fori' United States Patent Oiice 3,112,083 Patented Nov. 26, 1963 3,112,083 REVOLVNG TUBE DRIVE FOR WINDING A FIBRGUS STRAND N CROSS WOUND BOBBINS 0N DRAWING FRAMES Gnther Werner, Reinbek, near Hamburg, Germany, as-

signor to Hanseatische Motoren-Gesellschaft m.b.H., Hamburg-Bergedorf, Germany Filed June 13, 1962, Ser. No. 202,129 Claims priority, application Germany June 28, 1961 6 Claims. (Cl. 242-544) This invention relates to a revolving tube drive for winding a brous strand on cross wound bobbins on drawing frames in which the revolving tube which changes its direction of rotation executes a swinging oscillating movement, and in which the axis of the revolving tube is maintained at a constant angle with respect to the axis of the cross wound bobbin.

The revolving tube drives of the prior art have the disadvantage that the variation in the strand length resulting from the change or swing movement of the revolving tube-starting at the supply roller or the drawing rollers of the drawing frame and ending at the revolving tube-must be compensated. This was heretofore accomplished by a comparatively complicated mechanism and was generally obtained by special link members or feeder rollers for the cross wound bobbin which are so positioned that the feeder rollers are additionally moved so as to arrange their axes in accordance with the particular position of the revolving tube.

It is an object of the invention to simplify this prior arrangement by mounting the revolving tube on a swinging arm the pivot axis of which lies in the plane or at the level of the iibrous strand as it leaves the frame, or at the level of the gripping of the strand between the two delivery rollers of the drawing frame, while between the two elevated end positions of the axis of the swinging revolving tube, which moves relative to the axis of the cross wound bobbin, is located a center position which lies at the level of the gripping line formed between the cross wound bobbin and the winding rollers.

In the revolving drive according to the invention care is taken, as will be described hereinafter, that any special devices for compensating the length of the fibrous strand are not required, since the revolving tube executes a perpendicular swinging movement whereby the distance between the gripping line of the delivery roller or of the drawing cylinder of the drawing frame and the revolving tube remains always the same.

The elevation of the revolving tube admittedly varies relatively to the winding axis. The resulting differences in the strand length, however, are so small in the selected center position of the tube that they can be neglected.

Apart from the fact that with the revolving tube drive according to the invention much higher winding speeds can be obtained, this method of operation has the advantage that the reversal point of the revolving tube can be placed at any desired point with respect to the changing movement, because both the revolving tube and the swinging arm carrying it can be operated by a crank drive. The angular position of the crank of the aforesaid crank drive is adjustable according to requirements.

Furthermore, the revolving tube is driven by a chain which is guided over a sprocket wheel rotatable about the pivot axis of the swinging arm and is connected with one end to a crank of the crank drive and with the other end in known manner to an anchored spring. The sprocket wheel is connected in axial alignment with another sprocket wheel on the same shaft, and this last named sprocket wheel is connected by a chain with a sprocket wheel fixedly attached to the revolving tube.

Since the revolving tube is driven in this manner by a sprocket wheel rotatable about the pivot axis of the swinging arm, the aforesaid advantage of greater simplicity is obtained.

The invention is shown diagrammatically in the form of a speci-fic example on the accompanying drawings wherein:

FIG. l is a side view of the revolving tube drive,

FIG. 2 is an end view of the same, and

FIG. 3 is a plan view of a revolving tube drive.

A depending swinging arm 1 is operated by a crank drive 2, 3, 4 (FIG. 2) which consists of a horizontal lever 3 attached with one end to a crank 2 of a horizontal crankshaft 4. The arm 1 oscillates in a vertical plane in the direction of the arrow P on a pivot pin 6 supported with its ends in bearings 5 and 5. The axis of the bearings 5, 5' is arranged at the same level as the delivery rollers 16, 16', 16" forming a part of a drawing frame having a gripping indicated as at 15.

The other end of the lever 3 is pivotally connected by a pin 4 to a control portion of the swinging arm 1. The revolving tube 7 is rotatably supported in the lower part of the swinging arm 1. A sprocket Wheel 8 is xedly mounted on the tube 7 and is driven by an endless chain 9 from a sprocket wheel 10. Obviously, this chain drive may be replaced by a V-belt drive or the like.

The sprocket wheel 10 is iixedly connected to a sprocket wheel 11 which is driven by a ilexible member such as a chain 12 from a second crank 13 of the crankshaft 4. The chain 12 is subjected to the action of a spring 14 at the other end, the remote end of the spring being supported at a fixed point. The two end positions of the swinging arm 1 are shown in dotted lines in FIG. 2.

The operation of the revolving tube drive of the invention is as follows:

The iibrous strand after passing through the drawing frame and leaving the delivery or drawing cylinders 16, 16', and in some cases passing under a presser roller 16" at the gripping point 15, enters at 17 the bore of the revolving tube 7. The outlet end 18 of the revolving tube varies its position in vertical direction during the oscillating movement of the arm 1 and moves relatively to the supporting plane 19 of the cross wound bobbin 20 which latter during its winding rests on the two supporting rollers 21 and 21. Between the `different vertical positions of the swinging revolving tube axis lies a center position at the level of the supporting plane for the cross wound bobbin.

The resulting change in the distance between the supporting plane 19 and the outlet end 18 is so small that it is in practice of no importance. In FIG. l the upper position of the outlet end 1S of the revolving tube is indicated in chain dot lines.

What I claim is:

1. A revolving tube drive for winding a fibrous strand on cross wound bobbins after passing through a drawing frame, including winding rollers for supporting the cross wound bobbin, a revolving tube, means for oscillating said revolving tube so as to maintain a uniform angle normal to the winding axis of the cross wound bobbin, said means comprising a swinging arm adjacent the free end of which said revolving tube is rotatably mounted, and means for pivotally supporting said arm about an axis remote from the axis of said tube axis with the axis of said arm arranged in the plane in which the same fibrous strand leavesthe drawing frame, whereby the different levels to which the revolving tube is moved during its swinging movement include a center position which is located at the level of the gripping point between the cross wound bobbin and said winding rollers.

2. A revolving tube drive according to claim l, including means forming a crank drive for oscillating said swinging arm carrying said revolving tube.

3. A revolving tube drive for winding a fibrous strand on cross wound bobbins after passing through a drawing frame, including a pair of spaced parallel winding rollers for supporting the cross wound bobbin, a revolving tube, means for oscillating the revolving tube so as to maintain a uniform angle normal to the winding axis of the cross wound bobbin, said means comprising a depending swinging arm rotatably supporting said revolving tube adjacent its lower end, and means for pivotally supporting said arm about an axis remote from the axis of said tube axis with the pivot axis of said arm arranged in the same plane in which the fibrous strand leaves the drawing frame, whereby the different levels to which the revolving tube is moved during its swinging movement include a center position which is located at the level of the gripping point between the cross wound bobbin and said pair of winding rollers.

4. A revolving tube drive for winding a fibrous strand on cross wound bobbins after passing through a drawing frame, including a pair of spaced parallel winding rollers for supporting the cross wound bobbin, a revolving tube, means for oscillating the revolving tube so as to maintain a uniform angle to the winding axis of the cross wound bobbin, said means comprising a depending swinging arm rotatably supporting said revolving tube adjacent its lower end with the swing axis of said arm and the axis of said revolving tube arranged offset and parallel, means for pivotally supporting said arm about an axis remote from the axis of said tube axis with the axis of said arm arranged in the same plane in which the fibrous strand leaves the drawing frame, said tube axis remaining normal to the axis of said bobbin throughout its to and fro movement whereby the different levels to which the revolving tube is moved during its swinging movement include a center position which is located at the level of the gripping point between the cross wound bobbin and said pair of winding rollers, and means including a crankshaft and an arm connecting a crank on said crankshaft with said swinging arm between the ends of the latter for oscillating said swinging arm.

5. A revolving tube drive for winding a fibrous strand on cross wound bobbins after passing through a drawing frame, including winding rollers for supporting the cross wound bobbin, a revolving tube, and means for oscillating said revolving tube so as to maintain a uniform angle normal to the winding axis of the cross wound bobbin, said means comprising a swinging arm, the revolving tube being rotatably mounted adjacent the free end of `said arm, means for pivotally supporting said arm for swinging movement about an axis remote from the axis of said tube axis with the axis of said arm arranged in the same plane in which the fibrous strand leaves the drawing frame, means for rotating said revolving tube, said rotating means including a wheel rotatable about the pivot axis of said arm, a longitudinal flexible member engaging said wheel, a crankshaft having a crank to which one end of said flexible member is connected, a spring connecting the other end of said flexible member and having its other end anchored to said frame, and another wheel coaxially connected to said 'first wheel, and an endless driving member trained over said other wheel and trained over a corresponding wheel on said revolving tube.

6. A revolving tube drive for winding a fibrous strand on cross wound bobbins after passing through a drawing frame, including winding rollers for supporting the cross wound bobbin, a revolving tube, and means for oscillating said revolving tube so as to maintain a uniform angle normal to the winding axis of said cross wound bobbin, said means comprising a swinging arm with the revolving tube rotatably mounted adjacent the free end of said arm, means for pivotally supporting said arm about an axis remote from the axis of said tube axis with the axis of said arm arranged in the same plane in which the fibrous strand leaves the drawing frame, a sprocket wheel rotatable about the pivot axis of said swinging arm, a crankshaft, a sprocket wheel on said revolving tube, a second sprocket wheel coaxially connected to said first mentioned sprocket wheel, a chain trained over the second sprocket wheel and connected at one end to a crank on said crankshaft, an anchored spring connected to the other end of said chain, and a second drive chain trained over the sprocket wheel first named and the sprocket wheel on said revolving tube, whereby rotation of said crank will reciprocate said chain and oscillate said first named sprocket wheel and rotate said tube through said second named drive chain in reverse directions.

References Cited in the file of this patent UNITED STATES PATENTS 2,964,898 Werner Dec. 20, 1960 2,968,446 Selby Jan. 17, 1961 2,979,276 Bider Apr. 1l, 1961 FOREIGN PATENTS 906,788 Germany Mar. 18, 1954 jimi-n

Claims (1)

1. A REVOLVING TUBE DRIVE FOR WINDING A FIBROUS STRAND ON CROSS WOUND BOBBINS AFTER PASSING THROUGH A DRAWING FRAME, INCLUDING WINDING ROLLERS FOR SUPPORTING THE CROSS WOUND BOBBIN, A REVOLVING TUBE, MEANS FOR OSCILLATING SAID REVOLVING TUBE SO AS TO MAINTAIN A UNIFORM ANGLE NORMAL TO THE WINDING AXIS OF THE CROSS WOUND BOBBIN, SAID MEANS COMPRISING A SWINGING ARM ADJACENT THE FREE END OF WHICH SAID REVOLVING TUBE IS ROTATABLY MOUNTED, AND MEANS FOR PIVOTALLY SUPPORTING SAID ARM ABOUT AN AXIS REMOTE FROM THE AXIS OF SAID TUBE AXIS WITH THE AXIS OF SAID ARM ARRANGED IN THE PLANE IN WHICH THE SAME FIBROUS STRAND LEAVES THE DRAWING FRAME, WHEREBY THE DIFFERENT LEVELS TO WHICH THE REVOLVING TUBE IS MOVED DURING ITS SWINGING MOVEMENT INCLUDE A CENTER POSITION WHICH IS LOCATED AT THE LEVEL OF THE GRIPPING POINT BETWEEN THE CROSS WOUND BOBBIN AND SAID WINDING ROLLERS.

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