US2458555A

US2458555A - Winding system and apparatus

Info

Publication number: US2458555A
Application number: US617225A
Authority: US
Inventors: Bouvet Rene
Original assignee: American Viscose Corp
Current assignee: Akzo Nobel UK PLC
Priority date: 1945-09-19
Filing date: 1945-09-19
Publication date: 1949-01-11
Anticipated expiration: 1966-01-11

Description

Jan. 11, 1949. R. B ouvE'r WINDING SYSTEM AND APPARATUS Filed Sept. 19; 194sv IN VEN TOR.

UNITED STATES PATENT OFFICE- WINDING SYSTEM 'AND APPARATUS Rene Bouvet, Drexel Hill, Pa., assignor to American Viscose Corporation, Wilmington, Del., a corporation of Delaware Application September 19, 1945, Serial No. 617,225

systems have several disadvantages.

reason whatsoever.

12 Claims. (Cl. 28-51) This invention relates to a system and apparatus for winding filamentary materials, such as yarns, cords, and the like from one or more wound supply packages to a take-up package. It particularly concerns an arrangement involving unwinding from a package over its end by means of a freely rotatable flyer.

Heretofore, frictional drag systems have been I used to control the rotation of the flyer. Such One of the main difllculties is to obtain a proper system whereby there will not be excessive tension imparted to yarns, particularly small size or low denier yarns, but will still exert sufilcient frictional effect to prevent excessive unwinding of the thread from the package after the take-up means has ceased operation, When this occurs, an excessive amount of slack is produced so that there may be a. number of loose coils lying about the package or hanging therefrom. This condition gives rise to serious troubles particularly if it arises in connection with one or more packages mounted in a creel where the coils of one package may become entangled with those of an adjacent package.

It is an object of the present invention to provide a flyer controlled unwinding system in which the flyer is freely. rotatable and the tension during unwinding is applied independently of the fiyer. A further object of the invention is to provide means for bringing this flyer to a stop upon stoppage of the take-up means for any Other objects and advantages of the invention will be apparent from the drawing and description thereof hereinafter.

The drawing illustrates one embodiment of the invention particularly in relation to the warpingfrom a plurality of supply packages mount-. ed in a creel. It is to be understood, however, that the invention is applicable generally to the winding of yarns from onepackage to another, such as from a spool, cone, or cake" of rayon or other filamentary material, such as is produced in the conventional spinningbucket of the artificial filament industry, to a warp beam, to a cone winder, cop winder, twister or the like.

Figure 1 is a diagrammatic plan view of a warping system utilizing the' in-vention,

Figure 2 is a partially diagrammatic view showing one pair of the packages arranged for unwinding in the creel of Figure l and showing systematically the electrical connections -for controlling the winding system,

Figure 3 is a view of the guiding hook of the freely rotatable.

flyer as viewed in an axial direction when in place over the package, and

Figure 4 is a cross section showing the luncture between post 4 and the flyer plug assembly.

In general, as shown in Figure 2, a support 2 is provided for receiving a package 3 to be unwound. The support 2 carries a spindle or hollow rod 4 upon which the flyer E is mounted so that it is The rod 4 constitutes a core member adapted to receive a package thereabout.

The flyer 5 is provided with a, thread guiding eye-.

let, hook, or equivalent thread guiding surface 8 adjacent the end of an arm 5a which is bent aroundthe periphery of the package 3. The flyer 5 may have two such arms 5a to provide good balance and each arm'may have an eyelet 8 so that either may be threaded at will. The supporting rod 4 carries an electromagnet l in proximity to a suitable magnetic element 8 of ferrous material secured to the flyer or integral therewith. The leads 9 from the electromagnet are connected in a suitable circuit hereinafter more particularly described so that the magnet is energized upon stoppage of the take-up device as will be pointed out hereinafter. -The magnet l induces eddy currents in the associated element 8, and may in some cases lift the element 8 into frictional engagement with the adjacent face of the magnet i.

From the flyer, the thread proceeds through a suitable guide, as the pulley I 0, and then through a suitable tension device, such as a. disk II to the take-up means such as the warp beam l2 of Figure 1. wound on a single package, the warp beam may be replaced by anotherform of winding machine, such as a cone winding machine and a suitable connection may be provided to energize the magnet 1 upon stoppage of such winding machine. As shown in the specific embodiment of Figures 1 and 2, where a plurality of threads coming from a plurality of supply the pair, the joined thread beingreleasably heldby a suitablespring clip l4 secured to the support 2. The leading end 31) of the reserve package is laced through the idle flyer 5 so that it is in readiness to deliver thread after the first package is exhausted. Upon such exhaustion.

the thread flies out of the guiding hook 6, out of When a single thread'is to be the spring clip ll of the fiyer associated with the exhausted package and unwinding immediately proceeds from the adjacent package. The form of the guide hook 6 is better shown in Figure 3 as viewed axially of the package. 1

Conveniently, as shown more particularly in Figure 4, the fiyer assembly comprises the fiyer 5 freely rotatably mounted on the plug la which may have two metallic prongs l5 extending into suitable sockets in the end of rod 4 which sockets are provided with metal springs l6 forming electrical connections to supply the electromagnet I. A guiding plate to is preferably used to prevent the yarn being withdrawn over the end of the package from sloughing oil the outer windings over the end of the package and when used, this plate may be secured to the plug so that it is removable therewith. Upon removal of the fiyer assembly, a fresh package may be inserted over the supporting post 4 and the fiyer assembly with or without the plate 8a may be inserted in place thereover. The leading end of the fresh package may then be secured to the trailing end 3a of the adjacent package being unwound,- the tied ends being inserted in the spring clip l4 and then into the hook of guide 6 of the fiyer. By repetition of this procedure after exhaustion of each package, a continuous supply of thread can be obtained from a plurality of individual packages unwound in succession without interruption of the take-up.

In the warping arrangement, the threads proceed through eyeboards 20 through the eyelets 2| of drop wires 22 pivotally mounted on a rod 23. The drop wires are shown in perspective in Figure 2 and have secured thereunder a metallic inverted U-shaped member 24 arranged so that each depending prong thereof will fall into a respective one of the two

mercury troughs

25 and 26 which extend across and under the warp sheet of threads. Each of the troughs is connected in an electric circuit in series with the leads to the electromagnets i so that when a drop wire 22 falls as a result of loss of tension in the thread or breakage thereof, the circuit is closed to energize the electromagnets l of all supply packages being used. The same circuit may include a relay 30 which upon energizatlon as the result of the falling of a drop wire opens the switch ill to stop the motor l3, and closes a switch 32 which operates a solenoid 33 for retracting latch 36, thereby allowing spring 35 to apply the brake S6 to stop the warp beam P2 or other take-up device. After stoppage is complete, the operator may open the control switch 39 thereby disconnecting the power supply lines illfrom the entire system. A switch 4| may be provided for manual stoppage of the warp beam and it will be noted that when this switch is closed, the same effect will be obtained as if a drop wire had fallen into the mercury troughs. It is to be understood that the various connections and specific devices for stopping the motor and for braking the warp beam are shown for illustrative purposes only and equivalent devices and modified connecting systems may be used for the purpose set forth.

The present invention therefore provides for the over-end unwinding of one or more packages by means of a freely rotatable fiyer, the application of tension to the unwinding thread independently of the fiyer, and the quick stoppage of the fiyer upon stoppage of the winding take-up. This system allows accurate control of the tension to be applied to the yarn which depends upon the size of the particular yarn bei g hendied. It assures that the windings can be withdrawn easily even from rayon cakes by providing a guiding surface on the fiyer alongside the periphery of the cake. The arrangement also prevents sloughing of! of windings over the end of.

the cake and prevents the development of loose loops of thread around or hanging from the package being unwound. I

The invention can be applied to the unwinding of any form of wound package containingfllam'entary material of any character, such as yarns of natural or artificial fibers or filaments, such as those of cotton, wool, silk, rayon, nylon, resins, such as polyvinyl chloride, polyvinylidene chloride, copolymers of vinyl acetate or acrylonitrile, casein, etc. The invention is also adaptable to the winding of yarns having any size or denier which is a characteristic of great importance resulting from the complete divorcing of the tensioning means from the fiyer. It is to be understood that changes and variations may be made without departing from the spirit and scope of the invention as defined in the appended claims.

I claim:

1. In apparatus for winding thread and the like from wound packages, stationary supporting means for a wound supply package, fiyer means carried by the support and having thread guide means arranged to receive the thread unwinding from the package and to turn about the Package in response to the passage of the thread with respect thereto, electric braking means for bringing the fiyer means to a stop, driven take-up means for winding the thread into a package, means for stopping the take-up means, and

' means for operating the braking means upon stoppage of the take-up means.

2. In apparatus for winding thread and the like from wound packages, stationary supporting means for a Wound supply package, fiyer means carried by the support and having guide means arranged to receive the thread unwinding from the package and to turn about the package in response to the passage of the thread with respect thereto, electromagnetic braking means for bringing the fiyer means to a stop, driven takeup means for winding the thread into a package, means for stopping the take-up means, and means for operating the braking means upon stoppage of the take-up means.

3. In apparatus for winding thread and the like from wound packages, stationary supporting means for a wound supply package. freely rotatable fiyer means carried by the support and having thread guide means arranged to receive the like from wound packages, stationary supporting means for a wound supply package, freely rotatable fiyer means carried by the support and having thread guide-means arranged to receive the thread unwinding from the package and to turn about the package in response to the passage of the thread with respect thereto, electromagnetic braking. means for bringing the fiyer means to a stop, driven take-up means for winding the thread into a package, means for stopping the take-up means, and means for operating the braking means upon stoppage of the take-up means.

5. In apparatus for warping thread and the like from wound packages, stationary supporting means for a plurality of supply packages, flyer means for each package carried by the supporting means and arranged to receive the thread unwinding from the associated package and to turn about said package in response to the passage of the thread with respect thereto, electric braking means for substantialy simultaneously bringing all of the flyer means to a stop, driven take-up means for winding the thread from the several supply packages side by side into a common wound package, means for stopping the take-up means, and means for operating the braking means upon stoppage of the take-up means.

' passage of the thread with respect thereto, elec- 6. In apparatus for warping thread and the like from wound packages, stationary supporting means for a plurality of supply packages, freely rotatable flyer means for each package carried by the supporting means and arranged to receive the thread unwinding from the associated package and to turn about said package in response -to the passage of the thread with respect thereto,

electromagnetic braking means for substantially simultaneously bringing all of the flyer means to a stop, driven take-up means for winding the thread from the several supply packages side by side into a common wound package, means for stopping the take-up means, and means for operating the braking means upon stoppage of the take-up means.

7. In apparatus for'wlnding thread and the like from wound packages, stationary supporting means for a wound supply package, freely rotatable flyer means carried by the support and having thread guide means arranged to receive the thread unwinding from the package and to turn about the package in response to the passage of the thread with respect thereto, electric braking means for bringing the flyer means to a stop, driven take-up means for winding the thread into a package, means independent of the flyer i'or tensioning the thread as it proceeds from the flyer means to the take-up means, means for stopping the take-up means, and means for operating the braking means upon stoppage of the take-up means.

8. In apparatus for winding thread and the like from wound packages, stationary supporting means for a wound supply package, freely rotatable flyer means carried by the support and having thread guide means arranged to receive the threadunwinding from the package and to turn tromagnetic braking means for substantially simultaneously bringing all of the flyer means to a stop, driven take-up means for winding the thread from the several supply packages side by side into a common wound package, means for stopping the take-up means, and means for operating the braking means upon stoppage of the take-up means.

10. An arrangement for unwinding a wound package comprising a support, a hollow rod projecting endwise from the support to receive the package thereabout, a flyer rotatably carried by the rod adjacent the and away from the support,-

said flyer comprising a magnetic element near the rod, an electromagnet fixedly secured to the .rod adjacent the magnetic element for stopping the flyer, and electric wiring leads extending through the hollow rod to the electromagnet.

.11. An arrangement for unwinding a wound package comprising a core member to receive the package thereabout, a detachable mounting element, interengaging coupling members on the core member and mounting element,-a flyer freely rotatably carried by the element, and electromagnetic means on the element for stopping the flyer.

12. An arrangement for unwinding a wound package comprising a core member to receive the package thereabout, a detachable mounting element, interengaging coupling members on the core member and mounting element, a flyer freely rotatably carried by the element and electromagnetic means on the element for stopping the flyer, said coupling members serving .both as a mechanical coupling for supporting the element and as an electrical coupling for connecting the electromagnetic means to a source of power.

- RENE BOUVET.

REFERENCES CITED The following references are of record in the file of this patent: