US3281224A

US3281224A - Apparatus for forming and collecting filamentary materials

Info

Publication number: US3281224A
Application number: US244614A
Authority: US
Inventors: Jr Sam W Lowe
Original assignee: Owens Corning Fiberglas Corp
Current assignee: Owens Corning
Priority date: 1962-12-14
Filing date: 1962-12-14
Publication date: 1966-10-25
Anticipated expiration: 1983-10-25

Description

Oct. 25, l

S. W. LOWE, JR

APPARATUS FOR FORMING AND COLLECTING FILAMENTARY MATERIALS Filed Dec. 14, 1962 4 Sheets-Sheet 1 Eigi INVENTOR 5AM M4 LOWE, J/e.

A r ram/5 1 5 Oct. 25, 1966 s. w. LOWE, JR 3,283,224

APPARATUS FOR FORMING AND COLLECTING FILAMENTARY MATERIALS Filed Dec. 14, 1962 4 Sheets-Sheet 2 49 n mu. m: u .51 1 78 7 5/0 51 INVENTOR.

A TTOPMEl/S 5AM 14/. LOWE, J/a' Oct. 25, 1966 s. w. LOWE, JR 3,281,224

APPARATUS FOR FORMING AND COLLECTING FILAMENTARY MATERIALS Filed Dec. 14, 1962 4 Sheets-Sheet 1 /Z:8 Z( i T i 105 INVENTOR 5AM 1M LOWE, J/P.

s. w. LOWE, JR 3,281,224

4 Sheets-Sheet 1L X23 OP qmm Oct. 25, 1966 APPARATUS FOR FORMING AND COLLECTING FILAMENTARY MATERIALS Filed Dec. 14, 1962 A 7 TORA/[VS United States Patent 3,281,224 APPARATUS FOR FORMING AND COLLECTING FILAMENTARY MATERIALS Sam W. Lowe, Jr., New Ellenton, S.C., assignor to Owens- Corning Fiberglas Corporation, a corporation of Delaware Filed Dec. 14, 1962, Ser. No. 244,614 8 Claims. (Cl. 65-11) This invention relates generally to a method of forming and collecting filaments or fibers formed from attenuable material by attenuating streams of the material by winding one or more strands of the filaments or fibers on a collector wherein the strand or strands of filaments are traversed and distributed on the collector, the invention pertaining more especially to a method of collecting the strand during the dofling of a completed package of strand and the initiation of winding of the strand or strands upon an empty collector without interrupting the linear travel or attenuation of the filaments or fibers.

In attenuating heat-softenable mineral materials to fibers or filaments, such as heat-softened glass, it is essential to traverse or oscillate a strand of filaments in a manner to effect a crossing of the individual convolutions or wraps of the strand as it is being wound in package formation to avoid adhesion of the convolutions, as the filaments of the strand are usually provided with a coating or size as they are converged into strand formation.

Rotatable traverse means have been employed for oscillating a strand of filamentary material to effect crossing of the individual wraps and to distribute the strand lengthwise of a rotating collector in forming a package of strand. In strand packaging operations of this character it is desirable, if not essential, that the transfer of the strand from a completed package to an empty collector be effected at a strand transfer region and such region is usually at the end of the package.

Through the transfer of the strand at the end region of a package, the free end of the strand is available and may be easily identified in subsequent operations of paying out the strand onto a twister bobbin or spool or in operations involving unwinding the strand from the strand package. The transfer of the strand from a completed package to an empty collector must be accomplished without interruption of the linear travel of the strand as an interruption of strand movement involves disturbing the various factors which promote a formation of fine filaments attenuated at speeds of several thousand linear feet per minute.

The occurrence of break-outs of the filaments necessitates interruption of the attenuating of the filaments and results in considerable waste of filamentary material at a subsequent start up and appreciable loss of time in order to reestablish proper operating conditions.

The transfer of the strand from the completed package to an empty sleeve at a transfer station necessitates control of the strand upon its disengagement from the strand traversing medium until it moves into the influence of the traversing means to distribute the strand on an empty collector.

Heretofore it has been a practice to provide an arm or member movable lengthwise or transversely of the traverse means and independently thereof to disengage the strand from the traverse means and to promote reengagement of the strand with the traverse to effect winding upon an empty collector after the strand has been "ice transferred from the completed package. In one form, a reciprocable bar is moved lengthwise of the strand to bias the strand away from the traverse. In another form that has been heretofore used, a pivotally supported arm is oscillated into engagement with the strand to effect transfer of the strand. Arrangements of this character,

require elaborate timing means and operating mechanisms to effect diversion of the strand to a transfer region at the proper phase in the winding operation and to reengage the strand with the traversing means.

The present invention embraces a method of and apparatus for traversing a strand of filaments to distribute the strand on a rotating collector with the individual convolutions of strand in crossing relation and for effectively transferring the strand at the completion of a strand package onto an empty collector and thereafter reestablishing traverse of the strand on the empty collector.

An object of the invention resides in the provision of a method for traversing a strand of continuous filaments formed from heat-softenable material to distribute the strand in forming a package and for diverting the strand to a strand transfer position and maintaining the strand in transfer position while initiating Winding of the strand on an empty collector.

Another object of the invention is the provision of a method of traversing a strand of continuous filaments to oscillate the strand to form crossing wraps and distribute the strand lengthwise of a collector to form a package and effecting relative movement of the strand to a strand transfer region and maintaining the strand at said region during transfer of the strand onto an empty collector and thereafter directing the strand into the influence of the traverse after completion of the transfer to effect a winding of the strand upon the empty collector.

Another object of the invention resides in a method of effecting relative movement between a completed package and a strand traverse to effect disengagement of the strand from the traverse at a transfer region to initiate winding on an empty collector at the completion of a strand package.

Another object of the invention resides in a method of disengaging a strand of continuous filaments from a strand traverse means at the completion of a strand package by effecting relative movement between the completed package and the traverse means whereby the angularity of the strand with respect to the traverse means is effective to promote the disengagement of the strand from the traverse means to effect transfer of the strand to an empty collector.

Another object of the invention resides in a winding apparatus for packaging a strand of filaments in a wound package on a collector involving relative movement of a traverse oscillator for distributing the strand on a package and an indexing movement of the completed package at a transfer region and holding the strand by means asso ciated with the traverse for rendering the traverse ineffective to distribute the strand until winding is initiated on an empty collector.

Another object of the invention resides in a means mounted by a carrier for a strand oscillator for engaging Another object of the invention resides in a winding apparatus embodying a carrier supporting strand oscillators or traverse means for effecting distribution of strands of filaments upon collectors to form wound packages in combination with members supported by the carrier arranged to maintain the strands, during transfer of the strands from completed packages to empty collectors, out of the influence of the strand traverse oscillators until Winding of the strands on empty collectors is initiated.

Further objects and advantages are within the scope of this invention such as relate to the arrangement, operation and function of the related elements of the structure, to various details of construction and to combination of parts, elements per se, and to economies of manufacture and numerous other features as will be apparent from a consideration of the specification and drawing of a form of the invention, which may be preferred, in which:

FIGURE 1 is a front elevational view illustrating an apparatus for forming and collecting continuous filaments of heat-softenable material embodying an arrangement of the invention;

FIGURE 2 is a side elevational view of the apparatus illustrated in FIGURE 1;

FIGURE 3 is a top plan view of the winding apparatus embodying the invention;

FIGURE 4 is an enlarged top plan view of a portion of the construction illustrated in FIGURE 3;

FIGURE 5 is an elevational view of the construction shown in FIGURE 4;

FIGURE 6 is an end view of the construction shown in FIGURE 4;

FIGURE 7 is an elevational view, partly in section, of mechanism for distributing the strands in forming the packages and moving the strands to a transfer region at the completion of packages, and

FIGURE 8 is a schematic view of the actuating and control arrangement for the mechanism shown in FIG- URE 7.

While the method and apparatus of the invention are particularly usable in traversing and packaging strands of newly formed fibers or filaments of glass or other heatsoftenable material, it is to be understood that the method and apparatus may be utilized in forming wound packages of other linear filamentary materials.

Referring to the drawings in detail and initially to FIGURES l and 2, there is illustrated a feeder 10 arranged to contain heat-softened filament-forming material, such as molten glass, which is supplied from a melting furnace (not shown) provided with a forehearth 12 to which the feeder is secured. The floor or bottom wall of the feeder 10 is fashioned with a comparatively large number of depending tips or projections 14 arranged in rows, each tip or projection being formed with an orifice or outlet through which the fiowable glass in the feeder is discharged as fine streams. In the embodiment illustrated, the projections 14 are arranged in two groups designated 16 and 18 from which the streams of glass are attenuated into fine continuous filaments 20, the filaments being arranged in two converging fan-

like groups

21 and 22.

The feeder 10 may be formed of an alloy of platinum and rhodium or other material which will withstand the intense heat of the molten glass. The feeder may be connected with a source of electric energy controlled to maintain the glass in the feeder at a desired viscosity so that the streams of glass delivered through the orificed projections 14 will be substantially uniform. The viscosity of the streams of glass may be stabilized or increased through the use of heat absorbing fins 23 mounted on a manifold 24 through which a heat transfer fluid such as water is circulated.

The group of filaments 21 is converged into a multifilament strand 26 by a gathering or compacting shoe or member 28 and the filaments 22 are gathered into a strand 4 30 by means of a filament compacting or gathering shoe 32.

It is desirable to establish a moist environment for the groups of filaments. Nozzles 34 connected with a water supply manifold 35 are arranged to project fine sprays of water onto the groups of filaments. A lubricant, size or other coating material may be applied to the respective groups of filaments by

applicators

36 and 38.

Each applicator is inclusive of an applicator member or belt 40 arranged for movement in the liquid coating or size circulated through and contained in receptacles 41, the applicator members acquiring films of the coating or size which is transferred by wiping action to the groups of filaments through the engagement of the filaments with the applicator members.

The glass streams are attenuated to the fine filaments 20 by winding the

strands

26 and 30 upon collectors, packaging sleeves or tubes carried by rotatable collets of an automatic winding apparatus. Two packages are formed simultaneously and, upon completion of two strand packages, a collet supporting head is indexed to move the packages away from the winding station and move a pair of empty collectors or tubes into winding position at the winding station. During collection of the strands on the collectors, the strands are oscillated to effect crossing of individual wraps or convolutions of the strands and traversed to distribute the strands lengthwise on the collectors.

At the completion of a pair of strand packages, the strands are diverted to transfer regions and maintained in the transfer regions during initial winding of the strands upon the empty collectors without interrupting filament attenuation.

The winding apparatus 44 is inclusive of a housing or support structure 46. Rotatably supported by the housing is a circular member, turret or head 48 adapted to be indexed to multiple positions in the performance of strand winding and processing operations.

In the embodiment illustrated, there is journally supported upon the indexible member or head 48 three winding collets or

mandrels

49, 50 and 51 spaced circumferentially equal distances apart with their axes at the same radial distances from the axis of rotation of the indexible head 48. Mounted within the housing 46 is a frame g member 52 formed with a frusto-conically shaped surface 53, shown in FIGURE 3, providing a journal support for the indexible turret or head 48. A ring 54 engages a second frusto-conically shaped surface on the head 48 providing a bearing means preventing endwise motion of the turret.

While the winding apparatus illustrated in the drawings embodies an indexible head equipped with three package supporting collets or mandrels, the winder may be fashioned with an indexible head mounting two winding collets or mandrels arranged in diametrically opposed relation. The frontal plate of the indexible head 48 is provided with bosses 56, each boss being provided with bearing means journally supporting one of the winding collets or mandrels. Each of the winding

collets

49, 50 and 51 is driven or rotated by individually operable, electrically energizable motors (not shown) mounted within the head 48.

The indexible head 48 is adapted to be moved or rotated at each indexing cycle through one-third of a revolution by means of an indexing motor 60. The head 48 is secured to a member or spider 62 mounted upon a shaft 64 which is connected through chain and sprocket mechanism 66 with a gear reduction mechanism contained within a housing 68, the gear reduction mechanism being driven by the motor 60. Through this arrangement the head 48 is indexed at a comparatively slow speed.

The purpose of indexing the

collets

49, 50 and 51 is to successively move completed strand packages away from winding position, illustrated in FIGURE 1, and

move empty or strand-free sleeves or collectors into winding or strand collecting position. Each of the collets -49, 50 and 51 is adapted to accommodate

strand collectors

49a, 50a and 51a and, in the embodiment illustrated, each collet is adapted to support two collectors or sleeves in end-to-end relation. Each of the motors arranged to provide an individual drive for each of the winding collets is of a type in which the speed thereof may be varied by conventional means for the purpose of progressively reducing the speed of rotation of the collet at the winding station as the strand packages being wound increase in diameter by reason of the accumulating strand.

As shown in FIGURE 1, bafile means 72 comprising radially arranged portions is supported by the frontal plate of the head 48, the radial portions extending between adjacent collets to confine water sprayed onto the strand oscillators from the nozzles 74 in the region of the strand package being formed, the nozzles being carried by manifold 76 connected with a water supply. The radial portions of the baffie means 72 are provided with slots 78 providing clearance for one of the strands during strand transferring operations.

The winding apparatus illustrated includes primary strand traverse means for distributing the strands lengthwise of the packages and secondary traverse means in the form of rotating oscillators fashioned with means to guide or oscillate the strands in alternate angular directions to effect a crossing of the individual wraps or convolutions of the strands as they are wound on the collectors or sleeves.

The strand distributing arrangement includes means for reciprocating a carrier mounting the strand oscillators by a reducing stroke builder motion or primary traverse of low frequency and high amplitude and with the low amplitude high frequency oscillation of the strands, form strand packages of a generally uniform thickness with tapered ends to prevent sloughing of the strands at the ends of the package and with individual wraps of strand in crossing relation.

The winding apparatus is provided with a carriage of carrier 82 upon which the strand oscillators are rotatably journaled, the carriage 82 being mounted upon a rod or shaft 84, preferably of circular cross-section, supported and guided by suitable means contained in the housing 46. A rotatable strand oscillator or short time traverse means is provided for each of the

strands

26 and 30, the oscillators being designated 90 and 92 and arranged to be driven at very high speeds.

The oscillators are of identical construction. oscillator is of circular shape and includes a circular cylindrical body or section 94 in which is fashioned a peripheral angular slot or groove 96 having parallel side walls 98, the bottom of the groove being defined by a fillet or curved region 100 providing a hub structure as an integral portion of the circular cylindrical body 94 which, in effect, is partially bisected by the angular slot or recess 96. The angular slot 96 provides harmonic motion and functions to guide and oscillate the strand dur ing each revolution of the oscillator over a restricted area of the adjacent strand collecting sleeve to establish a crossing strand pattern of deposition on the collector.

Projecting axially from each side of the cylindrical body 94 is a shoulder or portion 102, the peripheral surface 104 of each of the shoulders being of frust-o-conical shape as particularly shown in FIGURES 4 and 5, the taper of each pair of the surfaces 104 on an oscillator being in convergent relation.

The frusto-conical regions on each oscillator are identical in order to attain perfect balance of the oscillators as only one of the surfaces 104 of each oscillator is engaged by a strand during strand transfer operations.

The purpose of the frusto-conically shaped surface 104 is to bias the strand or linear material toward the angular Each slot 96 for reentrance into the slot at the completion of a strand transfer operation from a completed strand package to an empty sleeve or collector. The oscillators and 92 are mounted upon a shaft 106 journaled in suitable bearings (not shown) in the carrier or carriage 82, the shaft being driven by a motive means 108 which may be a hydraulically actuated rotary motor or an electrically actuated motor.

The traverse or oscillator means 90 and 92 are preferably fashioned of layers of fabric or textile bonded into a solid integrated mass by a suitable resin such as phenolformaldehyde. A material of this character known commercially as Micarta has been found to be satisfactory for high speed strand oscillators, this material resisting licking or adherence of the strands to the oscillators.

The traverse carrier or carriage 82 is reciprocated con comitantly with the high speed rotation of the

strand oscillators

90 and 92 in order to distribute the strands lengthwise of the collector sleeves or tubes.

The arrangement includes means whereby, at the completion of the strand packages at the winding station, the traverse carrier 82 is moved through an additional distance or overtravel lengthwise of the strand packages in order to effect transfer of the strands from the completed packages onto the end regions of empty collectors spaced from the package winding region.

An arrangement for accomplishing the normal reciprocating motion and overtravel of the carrier 82 and oscillators is illustrated in FIGURES 3, 7 and 8. The mechanism for accomplishing these functions is contained within the housing 46 and supported by a casing 112 mounted upon a frame plate 114.

The

end walls

118 and 120 of the casing or housing 112 are bored to accommodate bearings or bushings 122 in which the shaft 84 is supported for slidable movement. The shaft or bar 84 and the carrier 82 are reciprocated by a motive means such as a hydraulic actuator 124 comprising a cylinder 125 provided with an end head 126 secured to the end wall 118.

A piston 128 mounted on a piston rod 130 is reciprocable in the cylinder 125. The distal end of the cylinder 125 is provided with a head or fitting 132. The end heads 126 and 132 are respectively connected with

tubes

134 and 136 with solenoid actuated valve means 152 of conventional construction supplied with oil or other fluid under pressure for reciprocating the piston 128, member 84 and the traverse carrier 82.

Surrounding the shaft 84 is a clamp 140, one portion 142 of the clamp member projecting forwardly and engaging a lengthwise extending abutment (not shown) to prevent relative rotation of the shaft 84 and the carrier 82. A U-shaped member 144 straddles the portion 142 of the clamp and is provided with a threaded opening to accommodate a threaded portion 146 of the piston rod 130. The piston rod may be adjusted relative to the member 144 by rotating the piston rod, the latter being locked in adjusted nosition by a locking nut 148.

Through this arrangement, reciprocation of the piston 128 and rod 130 effects corresponding reciprocation of the member 84 and the traverse carrier 82. The clamp may be adjusted relative to the member 84 and locked in adjusted position by means of screws 150. Through this adjustment a proper relation may 'be established between the oscillators mounted by the carrier and the strand collectors.

The solenoid operated fluid control valve 152, illustrated schematically in FIGURE 8, is arranged to be actuated and controlled through a timer mechanism 154 by two

limit switches

156 and 158. The housing of the limit switch 156 journally supports a switch actuating arm and the housing of the limit switch 158 journally supports a similar arm 162. The arm 160 is equipped with a roller 164 and the arm 162 equipped with a roller 166.

The rollers 164 and 166 carried by the switch arms are disposed in a longitudinal path of a projection 168 mounted on the clamp 140.

Thus during reciprocation of the piston 128 and the rod 130 the clamp 140 is moved lengthwise whereby the abutment or projection 168 alternately engages the rollers 164 and 166 to alternately actuate

limit switches

156 and 158 which, through the timer 154, alternately energize solenoids 170 and 172 for controlling the flow of fluid into the ends of the cylinder 125 to reciprocate the piston 128.

A schematic view of the hydraulic circuit and control for the solenoid 152 through the timer 154 is illustrated in FIGURE 8. A pipe 176 connects a fluid pump 178 with a reservoir (not shown) of oil or other fluid for the actuator 124.

Pipes

180 and 181 convey pressure fluid from the pump 178 to the solenoid controlled valve 152. A pipe 183 connected with the solenoid valve 152 is in communication with the pipe 136 leading into the distal end of the cylinder 125 through

dual valves

182 and 184.

. One-way check valve 182 prevents the flow of fluid into the pipe 136 but permits reverse flow of fluid from the'left-hand end of the cylinder through pipe 183 for returning fluid to the reservoir or tank through pipe 185 connected with a valve 152. The valve 184 is a manually controlled needle valve for metering the flow of fluid through pipe 136 to admit oil to the distal end of the cylinder 125 to force the piston 128 in a right-hand direction, as viewed in FIGURE 8. The pipe 180 from the pump 178 is connected with the pipe 134 leading into the opposite end of the cylinder 125 through a check valve 196 and a metering valve 192.

The check valve 190 prevents flow of fluid into the cylinder 124 but permits free flow of fluid in the opposite direction. The manually adjustable needle valve 192 meters the flow of fluid from the pipe 180 into the rod end of the cylinder 125. The area of the piston 128 facing the left-hand end of the cylinder 125 as viewed in FIG- URE 8 is substantially greater than the area of the opposite surface or rod end as the cross-sectional area of the piston rod accounts for the difference in the areas subject to fluid pressure.

The fluid pump 178 establishes pressure in both

pipes

180 and 181. When the fluid under pressure flows through the solenoid valve 152 and pipe 183 into the left end of the cylinder 125, as viewed in FIGURE 8, against the free end of the piston 128, the piston is moved in a right-hand direction because of the differential in piston areas so that the fluid at the right side of the piston is forced back into the tube 134 past the check valve 190 and into the pipe 180.

When the solenoid controlled valve 152 is actuated through the medium of the limit switch 158, the valve 152 is shifted so that the fluid under pressure in pipe 180 flows through the metering needle valve 192 through pipe 134 into the rod end of the cylinder 125. The solenoid valve 152 is in a position to connect the pipe 183 with the distal end of the cylinder through pipe 136 and the check valve 182 to provide for substantially unrestricted flow of fluid out of the left end of the cylinder through the pipe 186 to the fluid reservoir or tank (notshown). The cycle is repeated upon actuation of the solenoid operated valve 152 alternately by the

limit switch

156 and 158.

The

limit switch mechanisms

156 and 158 are mounted for relative movement for the purpose of progressively reducing the length of strand distribution on a collector tube as the package increases in size in order to build a tapered end package and prevent sloughing off of the strand at the ends. The limit switch 156 is mounted upon a slidable plate 198 and the limit switch 158 is mounted on a slidable plate 200. A toothed rack 202 is secured to the plate 198 and a second toothed rack 204 is secured to the slidable plate 200.

Journally supported upon a cover 121 of the casing 112 is a pinion 205 and the teeth of the

racks

202 and 204 are in engagement with diametrically opposite regions of the pinion whereby movement of the plate 198 effects corresponding movement of the plate 200 in the opposite direction. Secured to the end of the casing 112 is a cylinder 206 accommodating a piston 208 secured to a connecting rod 209. Depending from the plate 198 is a lug 213 connected with the piston rod 209. The respective ends of the cylinder 206 are provided with tubular fittings 210 and 211 to accommodate flow of fluid, preferably oil, into and away from the cylinder.

An adjustable abutment or screw 212 is supported at the distal end of the cylinder for initially positioning the piston 268 at the start of a package winding operation. An adjustable fluid metering valve (not shown) is connected with the fitting 211) to regulate or meter the flow of fluid into the distal end of the cylinder.

When the piston 2118 is moved by pressure fluid in a right-hand direction as viewed in FIGURE 7, the plates 198 and200 and the

limit switches

156 and 158 carried by the plates will be moved toward each other, and the longitudinal distance traversed by the oscillator carrier or carriage 82 is progressively shortened, thereby reducing the longitudinal travel of the oscillators and the lengthwise area of distribution of the strands on the collector tubes to fashion tapered ends on the packages. At the completion of a package, fluid under pressure is delivered through the fitting 211 against the right-hand side of the piston 208 to return the piston to its initial position for subsequent winding operations.

The apparatus of the invention is inclusive of an arrangement and method for moving the oscillator carrier 84 to a strand transfer position, that is, a position of overtravel in which-the dual strands are moved by the oscillators to a position wherein, during transfer of the strands from completed packages onto empty tubes or sleeves, disengagement of the strands from the oscillators occurs and the strands held in such transfer position during initiation of winding of the strands on the empty collectors which have been moved into the Winding station.

As particularly shown in FIGURES 4 and 5, the carriage or carrier 82 is fashioned with a boss 218. Mounted upon the boss 218 are

members

220 and 234 which may be referred to as strand hold-off members or means.

The member 220 is of L-s'haped configuration, one leg 224 being provided with a lengthwise slot 225 to ac commodate securing bolts 226 threaded into threaded bores formed in the boss 218. The other leg 228 of the strand hold-off member 221) projects forwardly at a region adjacent the oscillator 98.

The member 220 is adjusted by manipulating the screws 226 to provide a space of sufficient width designated 230 between the leg 228 and the side face of the cylindrical portion 4 to accommodate the strand which is maintained in engagement with the shoulder or portion 104 by the leg 228 of member 220. A second strand hold-off means or member 23 1 is of L-shaped configuration, one leg 236 thereof engaging the boss 218 is provided with a slot 238 accommodating screws 240 which extend into threaded bores in the boss 218 for securing the member 234 to the carrier. The member 234 is adjustable by manipulation of the screws 246 to a position wherein the leg 242 provides a space 244 between the leg and the adajcent shoulder or portion 104 of the oscillator 92.

The function of the

members

226 and 234 is to assure that the strands are maintained adjacent the slots 96 of the oscillators in strand transfer position at the completion of a pair of strand packages and to maintain the strands in strand transfer position until winding of the strands on the empty tubes or sleeve-s, moved by the indexing head 48 int-o winding position, has begun and prior to the return of the carrier 82 into its successive reciprocatory movements in distributing the strand on the sleeves in forming packages.

With reference to FIGURE 7, the distance indicated at 251 is the maximum travel of the strand lengthwise of a sleeve or tube during the formation of a package, the

traverse being moved through progressively reduced distances controlled by progressive movements of the

limit switches

156 and 158 to form a package having tapered ends. The timer 154 includes circuit control means arranged to overlie the limit switch l158 at the completion of strand packages to maintain the solenoid control valve 152 in a position whereby fluid continues to flow into the left end of the cylinder as viewed in FIGURES 7 and 8 causing an overtravel of the piston 28 through a distance indicated at 252 in FIGURE 7, moving the carriage or carrier 82 the additional distance to strand transfer position.

The timer 154 is arranged to then index the head 48 to move the completed packages on the sleeves 49a away from winding position and to move the collet 50 carrying empty collectors 50a into winding position. The operations of the arrangement in transferring the strands from a completed package to empty collectors moved into winding position are as follows: Assuming a pair of strand packages being formed on collectors or sleeves 49a on the collet 49 are nearing completion with the

limit switches

156 and 158 in positions which they are closest to one another defining the outermost and shortest strand layers lengthwise in each of the packages.

At this time a switch means actuated by the timer 154 overrides the limit switch 158 whereby the latter becomes ineffective to actuate the solenoid control valve 152. Under these conditions, the valve 152 remains in a position whereby fluid under pressure is delivered through the valve through

pipes

183 and 136 into the left end of the cylinder 125 to move the piston 128 and hence the shaft 84 and oscillator carrier 82 and

oscillators

90 and 92 through an additional distance indicated at 252, being the overtravel of the carrier at the completion of the package.

This travel continues until the piston 128 bottoms out at the right end of the cylinder, as viewed in FIGURES 7 and 8, in which position the carrier or carriage 82 is moved to its extreme outermost or strand transfer position. As the carrier 82 moves to this extreme position, the

strands

26 and 30 are disengaged from the guide grooves 96 of the

oscillators

90 and 92.

This disengagement may be effected in the following manner: If the angularity of the

strands

26 and 30 between the oscillators and the gathering shoes 28 and 32 is substantial as the oscillators approach their limit of movement at strand transfer position, the strands will automatically move out of the guide grooves 96 and engage the

legs

228 and 242 of the

members

220 and 234 and are thereby held, during strand transfer operations, in the

spaces

230 and 244 between the hold-ofi members 229 and 234 and the side surfaces of the cylindrical portions of the oscillators, hence interrupting the oscillations of the strands at the strandtransfer positions.

When the carrier 82 reaches its extreme position of overtravel in strand transfer position, the timer 154 initiates indexing movement of the head 48 in a clockwise direction, as viewed in FIGURE 1, to move the head through one-third of a revolution. This movement of the head carries the completed packages on the sleeves 49a at the winding position to the position occupied by the collet 51 in FIGURE -1 and moves the empty sleeves 50a carried by the collet 50 into the winding position previously occupied by the collet 49 and sleeves 49a.

During this movement of the indexing head, the movement of the completed package away from winding position effects an angular change in the

strands

26 and 30 whereby the strands are moved radially away from the oscillators and out of the grooves 96 of the oscillators. Thus the strands may be disengaged from the grooves 96 of the oscillators by the angular relationship of the strands to the oscillators at the extreme position of overtravel of the oscillators and carriage, or the strands are disengaged from the oscillators by the movement of the completedpackages away fro-m the winding station.

The strands are maintained in strand transfer position by the

members

220 and 234 and the strand wound upon the end regions of the empty collectors now moved into winding position and are not yet under the influence of the traverse oscillators and 92.

As the collet 49 carrying the completed packages moves away from winding position, the timer 154 actuates a, braking means in a conventional manner for rapidly slowing down the motor driving the collet 49 to rapidly bring this collet and completed packages to rest. Prior to the completion of the packages on sleeves 49a, the timer has initiated rotation of the collet 50 carrying the sleeves 50a.

As the collet 50 is rapidly rotating at the time it is moved toward winding position and, as the collet 49 bearing the completed packages is rapidly slowing down under the influence of braking forces, slack regions in the strands occur between the empty sleeves 49a on the collet 50 and the completed packages on the collet 49. The slack regions of the strand in strand transfer position, are adjacent the peripheries of the end regions of the empty sleeves on the collet 50, and allow the strands to adhere or lick to the peripheries of the empty sleeves whereby initial winding of the strands on the empty sleeves 50a is begun.

The strands adhere to the empty sleeves and the initial convolutions are snubbed by succeeding convolutions or wraps setting up tension in the regions of the strands between the completed strand packages and the initial strands on the sleeves 50a causing the strands to break or fracture between the completed packages and the empty sleeves. This action frees the completed packages which are brought to rest by the braking forces applied to the drive motor for the collet 49, permittlng the operator to remove the completed packages from the collet and apply or telescope empty sleeves onto the collet.

After these operations have been completed, the timer 154 actuates the solenoid control valve =.152 to initiate flow of fluid under pressure through the pipes and 134 into the right-hand end of the cylinder 125, as viewed in FIGURES 7 and 8, to move the piston 128 in a lefthand direction together with the shaft 84, carrier 82 and the oscillators. This movement of the carrier 82 eflects a change in the angularity of the strands between the gathering shoes and the strand hold-off

members

220 and 234 whereby the strands automatically move into the influence of the oscillators and into the grooves 96 thereof, and oscillation of the strands and winding thereof on the regions of the sleeves to form packages is begun.

Valve means controlled by the timer 154 effects a resetting of the piston 208 controlling the

limit switches

156 and 158 to move the latter to their maximum positions of travel so that thereafter the distribution of the strand lengthwise of the empty sleeves is controlled by the limit switches and the individual convolutions or wraps of strand are deposited in crossing relation underthe influence of the high speed rotation of the

oscillators

90 and 92. Rotation of the oscillators is not interrupted during strand transferring operations.

Winding of packages upon the empty sleeves at the winding station is continued until the packages are completely formed and the cycle of operations hereinabove described again repeated to move the strands by the carrier 82 to strand transfer positions, the completed packages away from winding position and empty sleeves into winding position.

From the foregoing it will be seen that the

strands

26 and 30 during strand transfer operations are maintained by the strand hold-oft

members

220 and 234 in a position adjacent to but out of the influence of the

oscillators

90 and 92. These results are attained without the use of members movable independently of the oscillator carrie 82 and provide a positive means for holding the strands in strand transfer position until subsequent winding operations are begun upon empty sleeves at the winding station.

It is apparent that, within the scope of the invention, modifications and different arrangements may be made other than as herein disclosed, and the present disclosure is illustrative merely, the invention comprehending all variations thereof.

1 claim:

1. A strand controlling means for a winding apparatus wherein strands of filamentary material are concomitantly wound on rotatable collectors to form packages of strand, a support, a carriage receiprocable lengthwise of the rotatable collectors, a rotatable strand guiding oscillator individual to each strand mounted on the carriage arranged to oscillate the strands to effect a crossing of the individual wraps of strand on the respective collectors, means for moving the carriage and oscillators to a strand transfer position at which the strands are wound on end zones of the respective collectors, and means mounted by the carriage arranged to maintain the strands adjacent to and out of the influence of the oscillators at the strand transfer position during transfer of the strands from completed packages onto other collectors.

2. A strand controlling means for a winding apparatus wherein a strand of filamentary material is wound on a rotatable collector to form a package of strand, a support, a carriage reciprocable lengthwise of the rotatable collector, a strand guiding oscillator mounted on the carriage arranged to oscillate the strand to effect a crossing of the individual convolutions of strand on the collectors, means for moving the carriage and oscillator to a strand transfer position at which the strand is wound on a zone of the collector adjacent the package winding region, and means mounted by the carriage arranged to engage and maintain the strand adjacent to and out of the influence of the oscillator at the strand transfer position.

3. A strand controlling means for a winding apparatus wherein dual strands of filamentary material are wound on rotatable collectors to form packages of strand, a support, a carriage reciprocable lengthwise of the rotatable collectors, strand guiding oscillators mounted on the carriage arranged to oscillate the strand to effect a crossing of the individual wraps of strand on the collectors, means for moving the carriage and oscillators to a strand transfer position at which the strands are wound on zones of the collectors spaced from the package winding region, and means mounted by the carriage individual to each strand and engageable therewith at the strand transfer position arranged to maintain the strands adjacent the oscillators out of the influence of the oscillators at the strand transfer position during transfer of the strands from completed packages onto other collectors.

4. Strand control for winding apparatus arranged to wind filamentary material onto a rotatable collector to form a package including, in combination, a support, a carriage mounted on the support and reciprocable lengthwise of the collector, a rotatable oscillator mounted on the carriage engageable with a strand for effecting crossing of the individual convolutions as the strand is wound on the collector, means for moving said carriage away from the package winding region to a strand transfer position at the completion of a package of strand, and means on said carriage engageable with the strand when the carriage is in strand transfer position arranged to maintain the strand adjacent to and out of the influence of the oscillator.

5. Strand control for winding apparatus arranged to Wind filamentary materials on rotatable collectors to form packages including, in combination, a support, a carriage mounted on the support and reciprocable lengthwise of the collectors, a rotatable oscillator individual to each strand mounted on the carriage engageable with a strand for eifecting crossing of the individual convolutions as the strands are wound on the collectors, means for moving said carriage away from the package winding region whereby the oscillators convey the respective strands to strand transfer positions at the completion of packages of strand, and means on said carriage individual to each strand and engageable therewith when the carriage is in strand transfer position arranged to maintain the strands adjacent to and out of the influence of the respective oscillators.

6. Apparatus of the character disclosed, in combination, a frame, an indeXible head journaled on the frame, a plurality of winding collets mounted by said head, means individual to each collet for rotating the same, each of said collets being arranged to support a plurality of collectors upon which strands of filaments are wound to form packages, means for distributing the strands on the respective collectors at a winding station including a reciprocable carrier mounted on the frame, a rotatable traverse oscillator individual to each strand journally supported on the carrier arranged to be engaged by the strands, means for reciprocating the carrier and oscillators to effect collection of the strands lengthwise of the collectors with successive convolutions in crossing relation, timer means effective upon completion of a package for initiating movement of said carriage to a position to divert the strands by the oscillators to transfer regions disengaging the strands from the oscillators and effecting indexing movement of the head, and means mounted by the carrier engageable with the strands at the transfer regions arranged to maintain the strands adjacent to and out of the influence of the traverse oscillators until winding of the strands has begun on empty collectors and reciprocation of the carrier resumed to form new packages of strand.

7. Apparatus of the character disclosed, in combination, a frame, an indexible head journaled on the frame, a plurality of winding collets mounted by said head, means individual to each collet for rotating the same, each of said collets being arranged to support a collector upon which a linear bundle of fibers is wound to form a package, means for distributing the linear bundle on the collector at a winding station including a reciprocable carrier mounted on the frame, a rotatable traverse oscillator journally supported on the carrier arranged to be engaged by the linear bundle, means for reciprocating the carrier to effect collection of the oscillating linear bundle lengthwise of the collector on a package winding region thereof with the individual convolutions in crossing relation, means effective upon completion of a package for initiating movement of said carriage to a position beyond the normal range of reciprocation of the carriage during a package winding operation to divert the strand by the oscillator to a transfer region and index the head, and means mounted by the carrier engageable with the linear bundle at the transfer region arranged to maintain the linear bundle at the transfer region out of the influence of the oscillator until winding of the linear bundle has begun on another collector and normal reciprocation of the carrier resumed to form a new package.

8. Apparatus of the character disclosed, in combina tion, a frame, an indexible head journaled on the frame, a plurality of winding collets mounted by said head, means individual to each collet for rotating the same, each of said collets being arranger to support a collector upon which a linear bundle of fibers is wound to form a package, means for distributing the linear bundle on the collector at a winding station including a reciprocable carrier mounted on the frame, a rotatable traverse oscillator journally supported on the carrier arranged to be engaged by the linear bundle, means for reciprocating the carrier to effect collection of the linear bundle lengthwis Qf th collector, timer means effective upon com- 3,281,224 13 14 pletion of a package for initiating movement of said car- References Cited by the Examiner riage to a transfer region beyond the normal range of UNITED STATES PATENTS reciprocation of the carriage and effect disengagement of the linear bundle from the oscillator and establish in- 2,749,055 6/1956 242 43'4 dexing movement of the head, and means mounted by 5 3,070,981 1/1963 Fnfikart 654 the carrier engageable with the linear bundle at the trans- 3,109,602 11/1963 Smith;

fer region arranged to maintain the linear bundle ad- 3,115,313 12/1963 Cunmngham 242432 jacent to and out of the influence of the oscillator until 3,198,444 8/1965 Moody et 24218 winding of the linear bundle has begun on an empty collector and normal reciprocation of the carrier resumed 10 DONALL SYLVESTER Primary Exammer' to form a package. C. VAN HORN, R. L. LINDSAY, Assistant Examiners.

Claims

1. A STRAND CONTROLLING MEANS FOR A WINDING APPARATUS WHEREIN STRANDS OF FILAMENTARY MATERIAL ARE CONCOMITANTLY WOUND ON ROTATABLE COLLECTORS TO FORM PACKAGES OF STRAND, A SUPPORT, A CARRIAGE RECEIPROCABLE LENGTHWISE OF THE ROTATABLE COLLECTORS, A ROTATABLE STRAND GUIDING OSCILLATOR INDIVIDUAL TO EACH STRAND MOUNTED ON THE CARRIAGE ARRANGES TO OSCILLATE THE STRANDS TO EFFECT A CROSSING OF THE INDIVIDUAL WRAPS OF STRAND ON THE RESPECTIVE COLLECTORS, MEANS FOR MOVING THE CARRIAGE AND OSCILLATOR TO A STRAND TRANSFER POSITION AT WHICH THE STRANDS ARE WOUND ON END ZONES OF THE RESPECTIVE COLLECTORS, AND MEANS MOUNTED BY THE CARRIAGE ARRANGED TO MAINTAIN THE STRANDS ADJACENT TO AND OUT OF THE INFLUENCE OF THE OSCIL-