US3421706A - Rotary funnels employed for winding fibre slivers in crossed reels - Google Patents

Description

jam. 14, 1969 J. F. HERUBEL 3,421,706

ROTARY FUNNELS EMPLOYED FOR WINDING FIBRE SLIVERS IN CROSSED HEELS Filed Jan. 12, 1967 Sheet of 2 m 4, 9 J. F. HERUBEL 3,421,706

ROTARY FUNNELS EMPLOYED FOR WINDING FIBRE; SLIVERS IN CROSSED REELS Filed Jan. 12., 1967 Sheet 3 of 2 United States Patent ROTARY FUNNELS EMPLOYED FOR WINDING FIBRE SLIVERS lN CROSSED REELS Jean Frederic Herubel, 1 Rue dn 4 Fevrier, Guebwiller, Haut-Rhin, France Filed Jan. 12, 1967, Ser. No. 608,816 Claims priority, application France, Jan. 21, 1966,

US. Cl. 24254.4 Claims Int. Cl. B65h 75/16 ABSTRACT OF THE DISCLOSURE A false-twist funnel device for Winding fibre slivers in a crossed-reel on a winding roll in which a funnel having a delivery end is imparted with angular oscillatory movement about its axis and a reciprocal movement along an arcuate path about an axis at right angles to the axis of oscillation such that the delivery end of said funnel describes a path of travel which extends substantially along a straight line parallel to the axis of the winding roll.

This invention relates to devices for winding textile fibre slivers in crossed reels in textile machines of the type employed for combing or preparation for spinning. The invention is more specifically concerned with the reciprocating motion and rotary motion of the false-twist funnel which moves in front of the reel during the process of formation of the reel and has the effect of crossing the turns of sliver.

In known forms of construction, the false-twist funnel is secured to a carriage which is adapted to move parallel to the axis of the winding-on rolls and the travel of which nearly corresponds to the width of the reel which is in process of formation. There is a tendency at the present time towards a constant increase both in diameter and Width of reels as Well as in the general speed of textile machines, so that devices of the type under consideration are called upon to work under poor conditions and even limit the work capacity of the machine as a whole by reason of the substantial masses and distances of travel of the moving parts. Moreover, in order to prevent abnormal tension on the sliver as a result of variation in length of the sliver path, the winding-on rolls are mounted in a rocking assembly in order to compensate for this effect.

In another form of construction, the false-twist funnel is pivotally mounted on a carriage which moves parallel to the axis of the winding-on rolls in such a manner as to ensure that the funnel is continuously directed along the line which passes through the points of contact of the sliver with the tensio-ning roll which is placed at the delivery end of the machine and with the winding-on roll. The travel of the carriage nevertheless remains substantial as well as the overall weight of the moving parts.

In another known system of the same type, the funnel is not only capable of swinging about its pivotal axis but also of sliding axially. The operating mechanism thus forms an assembly which is complicated, relatively unstable, and liable to result in impaired uniformity of the sliver.

Moreover, the rotary drive to the rotating funnels in known systems is obtained from the reciprocating motion of the funnel by means of a pair of bevel gears in conjunction with a stationary rack which is parallel to the axis of the winding-on roll. In this manner, the reciprocating translational motion of the funnel initiates its own movement of rotation about its axis. The reversal of the direction of rotation of the funnels is therefore carried "ice out at the end of travel of the funnel carriage, that is to say at the two ends of the reel.

Known mechanisms have the disadvantage, among others, of releasing the sliver at the moment of reversal of translational motion of the funnel, compensation for the variation in length of the sliver path being insufficient.

Under such conditions, it is difficult to obtain reels having neat shapes in view of the fact that the sliver is too slack. Furthermore, the sliver is not controlled in a uniform manner as it passes out of the funnel and is therefore subjected to variations in tension which are detrimental to its uniformity. Moreover, if it is desired to attain the maximum weight of material for a given weight of reel, it is necessary to have a well-condensed sliver, which is not always the case in the conventional delivery mechanisms of textile machines.

In point of fact, the present tendency to increase the diameters of reels calls for faultless formation of these latter, starting from small diameters, in order to prevent collapse of the large-diameter turns and thus to facilitate unwinding of the turns in subsequent machines. To this end, it is necessary to Wind-on a well-gathered sliver, the alternate false twist of which is condensed, and even to prevent the reversal of the direction of rotation of funnels over those portions of the sliver which are presented at the weakest points of the reel, namely at the sides.

The object of the invention is to improve winding-on mechanisms in order to overcome the disadvantages referred-to above.

To this end, there is imparted to the funnel a reciprocating movement of rotation about its axis and, in addition, a pivotal movement about an axis at right angles to the axis of the winding-on roll or rolls as well as a movement in the direction of the axis of the said roll or rolls, the two movements last mentioned being in synchronism so that, within the limits of ordinary use, the delivery end of the funnel describes a path which practically coincides with a straight line parallel to the axis of the said windingon roll or rolls.

According to another feature of the invention, the axis of pivotal motion of the funnel passes through a point which is located at a predetermined distance from the delivery end of the said funnel and in such a manner that the length of path of the delivery end of the funnel is relatively greater than the path described by the said point.

According to yet another feature of the invention, the funnel support is rigidly fixed to one end of a coupling rod which is pivotally attached to a link-rod, the said link-rod being pivotally mounted at a fixed point, a rocker-arm to which a reciprocating movement is imparted being pivotally mounted on the funnel support, the complete assembly being designed and arranged so that the delivery end of the funnel should describe a path which is substantially parallel to the axis of the winding-on roll or rolls.

According to another feature of the invention, the funnel-actuating link-rod system is designed and arranged so that the distance over which the delivery end of the funnel travels is greater than the distance covered by the end of the rocker-arm which drives the funnel support.

According to another feature of the invention, the funnel is mounted in its support in a removable manner.

According to another feature of the invention, the amplitude and phase of the movement of rotation of the funnel are adjustable with respect to the amplitude and phase of the movement of translation.

According to another feature of the invention, the amplitude of translational motion of the funnel is adjustable according to the length of the reel to be formed.

According to another feature of the invention, the translational motion of the funnel is uniformly accelerated and decelerated, this result being preferably in such a manner as to ensure that the motion is accelerated at the points of reversal and decelerated in the central position in order to guarantee uniformity of the turns on the reel.

According to another feature of the invention, the acceleration and deceleration of the translational motion are carried out by means of a pair of eccentric or elliptical wheels or by means of two eccentric wheels interposed in the translational motion control mechanism.

According to another feature of the invention, the camshaft is driven by means of a pair of eccentric wheels in order to compensate for the obliquity effect of some link-arms of the funnel-actuating link-rod system.

Other properties and advantages of the invention will become apparent from the following description, reference being had to the accompanying drawings, in which:

FIG. 1 is a schematic arrangement of the funnel-actuating link-rod system according to the invention.

FIG. 2 shows, partly in cross-section, the mode of assembly of the funnel in its support.

FIG. 3 shows the rocker-arm and its operating mechanism in greater detail.

FIG. 4 is a longitudinal sectional view which corresponds to FIG. 3 but which has been rotated through an angle of 90 with respect to the latter.

The false twist funnel 1 is mounted in a support 2 (as shown in FIGS. 3 and 4) which is pivoted about the shaft 3. The complete assembly is carried by an arm 4, the arm being pivoted about its shaft 5 which is mounted in two bearings 6 and endowed with a reciprocating movement controlled by a 1ink-rod 7 and by a crank-arm 8. The pivot-pin 3 of the funnel support 2 therefore describes a circular arc (as indicated by the reference d in FIG. 1). The funnel 1 consequently moves in a plane which is tangent to the winding-on roll or rolls 9.

In addition, the funnel 1 is mounted on its support 2 in such a manner as to be capable of tilting with respect to the pivot-pin 3 so that the tilting movement of the funnel compensates for the swinging motion of the rocker-arm 4 and that, within the limits of utilization, the path followed by the end of the funnel coincides with a straight line e (as shown in FIG. 1) which is parallel to the axis of the winding-on rolls 9. The inclination of the funnel support 2 is obtained by means of a coupling rod 10 which is rigidly fixed to the support 2 and pivotally attached at 13 to a link-rod 11 which is pivotally mounted at 12 on the frame of the machine. During the oscillating motion of the rocker-arm 4, the assembly comprising the coupling rod 10 and link-rod 11 is endowed with a lifting and lowering movement about the pivotal axis 12, the result of this movement being to control the inclination of the funnel 1. The link-rod 11 extends horizontally in the central position of the funnel.

The pin 13 by which the rod is pivotally coupled to the rod 11 is adapted to carry a tensioning roller 14 (as shown in FIG. 4) which carries out a movement of vertical displacement.

A further advantage of this invention lies in the control of the movement of rotation of the funnel. This is achieved by means of a toothed sector 15 (as shown in FIG. 3) which is pivotally mounted on the pin 5 of the rocker-arm 4 and driven in turn by a link-rod 16 and a crank-arm 17. The sector 15 is adapted to engage a pinion 18 which is keyed on shaft 19, the said shaft being mounted in the rocker-arm 4 by means of two bearings 20 and adapted to carry the sprocket-wheel 21. Motion is transmitted by means of a chain 22 which is placed inside the rocker-arm 4 to the sprocket 23 which is keyed on the pivot-pin 3 of the support 2 of the funnel 1, the said pin 3 being intended to drive the funnel 1 by means of a pair of bevel- pinions 24 and 25. A movable tensioning roller 26 (as shown in FIG. 3) serves to control the tension of the drive chain 22 against which it is applied.

In accordance with the present invention, the driving motion of the sector 15 can either be in step or out of step with respect to the reciprocating motion of the rocker-arm 4. The reversal of the direction of rotation of the funnel 1 is dependent on the out-of-step relation of the two movements. Accordingly, the crank-arm 17 is designed to be adjustable within the arcuate guide slot 40 of the drive wheel 31.

According to another feature of the invention, the translational movement of the false-twist funnel 1 is uniformly accelerated and retarded so as to guarantee uniformity of the turn on the reel, the movement being accelerated at the moment of reversal and retarded in the central position. To this end, the crank-arm 8 is driven by a pair of elliptical eccentric wheels or, as shown in the drawings, by two eccentric wheels 27 and 28.

According to another feature of the invention, the drive shaft 33 is driven by a second pair of eccentric wheels 34 and 35 so as to compensate for the effect of obliquity of the link-rod 7 and crank-arm 8.

According to another feature of the invention, the travel of the funnel 1 and consequently the width of the reel 52 can be varied. To this end, the position of the pin 36 of the link-rod 7 can be adjusted within the guide slot 37 which is formed in the crank-arm 8.

According to another feature of the invention, in order to cause a variation in the false twist applied to the sliver, the pin 38 of the link-rod 16 is adjustably mounted in a guide slot 39 of the crank-arm 17.

The amplitude of movement of the toothed sector 15 can be corrected still further by displacing the end of the link-rod 16 (the setting point) within the guide-slot 41 of the said toothed sector.

A further advantage of the invention lies in the interchangeability of the funnel. As shown in FIG. 2, the funnel consists of an inlet funnel 45 and a tapered endpiece 46, the orifice of which can have a number of different profiles which are added to the funnel body 44.

The funnel body 44 is mounted in a bush 47 which is rotatably mounted in the roller bearing 48 of the bearing shell 49 and which is provided with a terminal threaded portion 50. The bevel gear 25 is integral with the bush 47. The positioning of the funnel Within the bush is obtained by applying the said funnel in abutting contact with an annual shoulder of the said bush. The complete assembly is locked in this position by means of a rubberized ring 53 which is flattened by compression against the funnel tube by means of a special nut 51 which is screwed onto the threaded portion 50' of the bush or by means of any like locking system of known type. In order the change the funnel, it is merely necessary to loosen the nut 51 and to effect its replacement.

As has been brought out by the foregoing, the arrangement according to the invention provides a large number of advantages over known systems, and especially the following:

The uniform acceleration and deceleration of the translational motion of the funnel guarantee uniformity of each turn on the reel.

The different compensations which are contemplated make it posis-ble to prevent the sliver from being released at the points of reversal of translational motion.

In vie-w of the fact that the pivotal axis of the funnel passes through the mid-point of its length and also by virtue of the proportions of the control link-rodzsystem, the mass inertial effect is reduced to a minimum.

The mass inertial effect is further reduced by the fact that the length of path (reference b, FIG. 1) of the delivery end of the funnel is greater than the length of path at the point of pivotal motion of the funnel (reference a, FIG. 1).

Interchangeability of the funnel permits of adaption to the material being processed, the same result being achieved by the regulation of amplitude and of rotational phase or synchronization with respect to translational motion.

As will be readily apparent, the mode of construction as hereinbefore described and illustrated in the accompanying drawings has been given solely by way of example and not in any limiting sense. It will accordingly be evident that it is possible to modify in any suitable manner both shape, composition, arrangement and mode of assembly of the components of the embodiment described without thereby departing from the scope of the invention. Thus, the winding-on mechanism described can be provided with two funnels so as to permit of its application to a two-funnel delivery. To this end, it is merely necessary to mount a double funnel support whilst the drive mechanisms remain identical.

According to another alternative form, the pin 5 -of the rocker-arm 4 can be mounted at right angles to the axis of the machine.

According to another alternative form, the same pin 5 can be mounted parallel to the axis of the machine.

What I claim is:

1. Apparatus for winding textile fibre slivers on a winding roll, said apparatus comprising: a rocker arm supported for pivotal movement about an axis which is perpendicular to the axis of said winding roll, a support mounted on said arm for pivotal movement about an axis parallel to the axis of pivotal movement of said rocker arm, a funnel rotatably mounted in said support, first and second links, said first link having one end secured to said support and an opposite end connected to one ,end of said second link for pivotal movement about an axis parallel to the aforesaid axes, said second link having a second end which is fixed for pivotal movement about an axis parallel to said axes, and means for driving said arm in oscillation about its axis of movement to produce arcuate and pivotal movement of said funnel in which the lower end of the funnel moves along a rectilinear path parallel to the axis of said winding roll.

2. Apparatus as claimed in claim 1 comprising means for. rotating said funnel in said support in alternate opposite directions as the arm undergoes oscillating movement.

3. Apparatus as claimed in claim 2, wherein said funnel is mounted in said support along an axis which is fixed with respect to said first link and extends in general alignment therewith.

4. Apparatus as claimed in claim 3, wherein said lower end of said funnel is tilted outwards with respect to said first link.

5. Apparatus as claimed in claim 4 comprising means for guiding the passage of slivers to said funnel including sliver guides in the region of the axes of pivotal movement of said first and second ends of the second link.

6. Apparatus as claimed in claim 2', wherein said means for driving said arm in oscillation comprises a connecting rod attached to said arm and a crank arm connected to said rod to drive the same.

7. Apparatus as claimed in claim 2, wherein said funnel is removably mounted in said support and the apparatus further comprises means for removably securing the funnel in said support including first and second threadably engaging members and a deformable element between said members for engaging said funnel to hold the same in position in said support when the element is deformed under the action of said threadably engaged members.

8. Apparatus as claimed in claim 1, wherein said means for driving said arm includes means for accelerat ing the movement of the arm at the points of reversal of the oscillatory movement and to decelerate the movement of the arm in the central portion of said oscillatory movement.

9. Apparatus as claimed in claim 8, wherein said means for driving said arm in oscillation comprises a connecting rod attached to said arm and a crank arm connected to said rod to drive the same, said means for accelerating and decelerating the movement of the arm comprising a pair of eccentric toothed wheels driving said crank arm.

10. Apparatus as claimed in claim 9, wherein said means for accelerating and decelerating the movement of the arm further comprises a drive shaft on which one of said wheels is mounted, said crank arm being mounted on the other wheel, and a second pair of eccentric wheels for driving said drive shaft.

References Cited UNITED STATES PATENTS 2,358,294 9/1944 Arterton et al. 242-43 2,968,446 1/ 1961 Selby 242-54.4 2,979,276 4/ 1961 Bider 242-54.4

FOREIGN PATENTS 944,691 12/1963 Great Britain.

OTHER REFERENCES Germany printed application DAS 1,119,154 to Kipping et al. dated December 1961.

WILLIAM S. BURDEN, Primary Examiner.

US. Cl. X.R.

Images