CA1134575A - Linear draw system - Google Patents
Linear draw systemInfo
- Publication number
- CA1134575A CA1134575A CA000359528A CA359528A CA1134575A CA 1134575 A CA1134575 A CA 1134575A CA 000359528 A CA000359528 A CA 000359528A CA 359528 A CA359528 A CA 359528A CA 1134575 A CA1134575 A CA 1134575A
- Authority
- CA
- Canada
- Prior art keywords
- rollers
- roller
- polymeric material
- motorized
- filamentary polymeric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Abstract
TITLE
LINEAR DRAW SYSTEM
ABSTRACT OF THE DISCLOSURE
A device for drawing filamentary polymeric material affords simple and efficient string-up from source to take-up without any operator exposure to moving rollers. Provided is a roller assembly having at least three rollers, at least two of which are motorized. The rollers are spaced from each other in a first position, which provides for passage of filamentary polymeric material in a straight line from a source of supply through space between the initially stationary rollers and thence to a means for winding the filamentary polymeric material into a package. Provided also is a mechanism for moving at least one roller to a second position which affords contact of the filamentary polymeric material with the surface of an upstream and a downstream motorized roller over a surface angle of less than 360°. The filamentary polymeric material adheres to the surfaces of the motorized rollers without slippage, and is drawn between the upstream and downstream motorized rollers when these rollers are caused to move.
LINEAR DRAW SYSTEM
ABSTRACT OF THE DISCLOSURE
A device for drawing filamentary polymeric material affords simple and efficient string-up from source to take-up without any operator exposure to moving rollers. Provided is a roller assembly having at least three rollers, at least two of which are motorized. The rollers are spaced from each other in a first position, which provides for passage of filamentary polymeric material in a straight line from a source of supply through space between the initially stationary rollers and thence to a means for winding the filamentary polymeric material into a package. Provided also is a mechanism for moving at least one roller to a second position which affords contact of the filamentary polymeric material with the surface of an upstream and a downstream motorized roller over a surface angle of less than 360°. The filamentary polymeric material adheres to the surfaces of the motorized rollers without slippage, and is drawn between the upstream and downstream motorized rollers when these rollers are caused to move.
Description
i3~57~
~ ,.
I
BAC _ROUND OF THE INVENTION
rield of the Invention .
The present invention relates generally to the manufacture cE synthetic filamentary polymeric structures. In particular, . S it relates to the stretching of the Eilamentary poLymeric structures without any operator exposure to moving rollers during string-up from source to take-up.
Prior Art Statement Stretched filaments of synthetic high polymers have been . l0 conventionally produced in good yields for many years in two distinct process stages, which are separated from one another in respect of both space and time. ~hat is to say, spinning is Eirst accomplished, generally at speeds up to about 1000 to lZ00 meters per minute, followed by a separate drawing step which is accomplished on a draw-twisting or draw-winding machine.
. A more recently developed method of obtaining stretched filaments of synthetic high polymers comprehends spinning and stretching contiruously, as in the so-called "spin-draw" processes, the latest modifications of which continuously combine spinning, stretching, and winding with interlacing tor intermingling~ and/or texturizing. Similarly the so-called "draw-texturizing" processes continuous}y combine stretching and winding with texturizing ; (and interlacing). Exemplary of the aforementioned processes are the inventions disclosed in the following patents: U.S. 2,289,860;
U.S. 3,452,130; U.S. 4,03;,464; U.S. 3,;55,803 and U.S. i,448,186.
~:
..
. . 2. ` ~
~ .~ .
, Nothwiths~anding the effic3cy of these and similar processes involving the drawing of filamentary polymeric ma~erial, they 1 ars all found wanting in or.e importane aspect; viz., string-up from source to take-up is not simply and efficiently accomplished, ; especially in coupled processes, and there is considerable operator e~posure to rollars moving at very high speeds. The present invention, which obviatas these difficulties and inadequacies of the prior art, is nowhere disclosed or remo~ely suggested by any of the processes or devices of the prior art.
SUMMARY OF THE I~V~ Q~
According to the present invention a device is provided comprising the followlng coactive components:
A. A roller assembly comprising al least thrae rollers, at least two o~ which are motorized, the rollers being spaced from each other iu a first position providing for passage of a filamentar/
polymeric material in a straight line from a source of supply thereof through space between the rollers and thence to a means for winding the filamentary polymeric material into a package on a support; and ::
3. ~leans for moving at least one roller to a second position providing for contact of the filamentary polymeric material with l the surfac0 of an upstream and a downstream motorized roller ovar ¦1 ¦ a su~iace a~gle of less th~n 360.
:~ I
:~ I
I
. ~.
....
~ ~ , :
, : ':
' !
I
As 3 result, the filamentary polymeric ma~erial adheres to the surfaces of che mo~orized rollers without slippago and is drawn between the ~pstream and do~nstream motori2ed rollers when these rollers are caused to move. String-up from source to take-up 5 has been effected simply and efficiently and without any opera-tor e~posure to moving rollers, and the device has be~n advanced into the operation mode, free of any comple~ity.
.An especially desirable and preferred embodiment of the present invention comprises the following cooperati~e combination of 10 elements:
A. First and second roller turrets spaced from each other, each roller turret comprising two motorized rollers which ars spaced from each other and communicate with each other by means of a cross-member joining the shafts thereof.
The motorized rollers of the first turret are designed to operate at a surface Yelocity of Vl and V~ respectively, and the motorized rollers of the second turret designed to operate at a surface ~elocity of V3 and V4 respectively, wherein Vl c V2, V3 c V4, and V2 c V_. The roller turrets are ini-tially disposed in a first position providing for passage orf filamentary polymeric material from a source of ! supply thereof through the space between the motorized .~ rollers of the first turret, thence through the space ~ between the motorized rollers of the second turret, and :¦ 25 thence to a means for winding the filamentary polymeric I ~ materisl in~o a pactage ~n a support and ~ 4.
.~' , .~
~3~st~
B. ~leans for rotating each roller turret in either a clock~
wise or counterclockwise direction through an angle less than 360 to a second position providing for contact af the filamentary polymeric material with the surface of each motorized roller over a surface angle of less than 360.
For the very best results, the surfaces of the motorized rollsrs should have a surface roughness height inde~ value of 32 ~S
or less.
'~hen the aforementioned preferred embodiment of the present invention is employed,filamentary polymeric material is wound into, a package at speeds up to and including 6,000 meters per minute.
~loreover, it has been found to be especially advantageous in the employment of the aforementioned preferred embodiment of the present invention if such embodiment additionally comprises ~a~ sensing means positioned downstream from the second roller turret for the detection of a break in the moving zhreadline of the filamentary polymeric material coupled with (b) interrupting means for stopping the rotation of the motorized rollers and returning the roller turrets to the first defined position thereof.
;
It is very convenient in the utilization of the aforementioned preferred embodiment of the present in~ention if the roller turrets thereof are rotated from the first ~o the second defined .. " 5.
~ ' j ~39L~
I
position thereof chrou~h an angle of about Z50; and most conveniently if the c^irst roller turret is rotated in a countercloch~ise direction, and the jecond roller curret is rotated in a clockwise direction. Under such conditions, opcimum results are conveniently achieved when the surface ` velocities of the motorized rollers are defined by the . following rola~ionships: Vl = V2; V; = V4; and Vz c V;.
BRI~F DESCRIPTION OF THE DRAWINGS
For a more complete understanding of the present invention, reference should be made to the Detailed Description of the Preferred Embodiments thereof, which is set forth below.
. This Detailed Description should be read together with the accompanying Drawings, wherein:
FIG. 1 is a perspective view, schemacically representing an especially preferred embodiment of the present invention in a Eirst defined position thereo, as hereinafter explained in detail;
FIG. 2 is a perspective view schematically representing the same embodiment in a second defined position thereof, as i 20 hereinafter explained in detail; and l FIG. 3 is a side view, schematically representing the ¦ embodiment of FIGS. 1 and 2, which is provided with additional coopera~ive components.
~:
i .
i^ ~ 6.
. ~ _ .
.3~5~
i DETAILED ~ESC_I_ ION OF THE_PREFERRED E~IBCD~IENTS
Referring now to the Drawings, a particularly preferred ambodiment of the present invention ~1~ is shown in ~IGS. 1 and 2. The embodiment comprises first roller turrst (la) s and second ~oller turret (lb). Roller turret tla) has two . motorized rollers (A) and (B), which are spaced from each other and communicate with each other by means of cross member (2), joining shats t4) of rollers ~A) and ~B). Roller turret ~lb) . has two motorized rollers ~C) and ~I)), which are spaced from each other and communicate with each other by means of cross member ~21), joining shafts ~4) of rol}ers ~C) and ~D).
~lotorized roller (A) is designed to operate at a surface velocity of Vl; motorized roller (B), of V2; mo~orized roller . (C), of V3; and motorized roller ~D), of V4. Surface velocity Vl is less than or equal to V2; surface velocity V~ is less . than or equal to V4; and V2 is less than V3.
FIG. 1 depicts roller turrets ~la) and lb) being disposed in a first position providing for passage of filamentary polymeric material ~8) from a source of supply thereof ~not shown) through the space between motorized rollers ~A) and (B), thence through the space between motorized rollers (C) and ~D), and thence to a means for winding the filamentary polymeric material into a package on a support ~not shown).
I
~; By means of pivots t3) and (31), roller turrets ~la) and ~lb) :l 25 are caused to rotate to a second position as shown in FIG. 2.
The rotation of the individual roller turrets may be either ln a clockwise or counterclockwise direction. In FIG. 2, roller turret (la) is shown as having been rotated in a I
~ 7.
.~ " .
__ , : :
,.i~ " .
~3~7~
counterclockwise direction, and rollar turret (lb) is shown as having been rotated in a cloc~ise directio~, presenting a c~nfiguration which is very conveni0ntly and advantageously employed. The rotation of each roller turret should be through 5 an angle of less than 360. FIG. 2 shows the rotatlon of roller turret ~la) through an angle of about 250 and the rotation of roller turret ~lb) through an angle of about 250, presenting a coniguration which has been found to be especially useful.
As a result of rotation of the individual roller turrets to the second position thereof, rilamentary polymeric material ~3) is caused to contact the surface of the motoriaed rollers . over a surface angle of less than 360, as seen in FIG. 2.
. ',~hen rollers ~A), ~3), ~C), and ~D) caused to rotate at suTface velocities Vl, Vg, V3, and V4, respectively, as hereinbefore set forth, ilamentary polymeric material ~S) adheres to the surfaces of the motorized rollers without slippage and is drawn betwesn the first and second roller turrets. Fspecially good results are achieved when the surfaces o~ the motori~ed rollers have a surface roughness height inde~ valus of 32 RMS
or less, and most advantageouely 10 RMS or less. Under such conditions, filamentary polymeric material ~8~ is drawn and wound onto a package at speeds up to and including 6,000 meters per minute. For special convsnience in operation and very advantageous results, the following re}ationships have been determined: Vl - Y2, within the range 500 m/min to 3700 m/min;
. V3 ~ V4, within the range 1800 m/min to 4700 m/min; Vg being in any event less than V3. As is understood by those of skill in this art, filamentary polymeric material ~8) is ordinarily treated with water or an appropriate standard finish composition before being stretched in a device according ~o the present invention.
:
~: :
.
.
!"`
~.~3~57~
Referring now to FIG. ~, there is shown the same embodimen~
depicted in FIGS. 1 and 2, e~cep~ that there are additional elements cooperacing in the basic com~ination. In particular, sensing means t5), which is positioned downstream from the second roller turret, detects any interruption in the moving threadline of the filamentary polymeric material t8). Such sensing means "~hich are usually based upon photoelectric, capacitance, or pneumatic principles, are readily available commercially. The output signal from such sensing means t5), which is indicated by the dotted line emanating therefrom, is transmitted to interrupting means (7), which stops the rota~ion of the individual motorized rollers and effects the return of the roller turrets to their first defined position, as set . forth hereinabove. Such mechanisms are readily available commercially. In addition, the output signal from sensing means ~5) may be transmitted to standard cutting means (6), which severs the threadline of the filamentary polymeric material (8~, in order to prevent fouling of the motori2ed rollers and to facilitate a subsequent string-up procedure.
~he present invention has been described in detail with respect to certain preferred embodiments thereof. As is understood by those of skill in the art, variations and modifications in this detail may be effected without any departure from the spirit and scope of the present invention, as defined in the hereto-appended claims.
.
Il 1 . 9.
. .
:
~ ,.
I
BAC _ROUND OF THE INVENTION
rield of the Invention .
The present invention relates generally to the manufacture cE synthetic filamentary polymeric structures. In particular, . S it relates to the stretching of the Eilamentary poLymeric structures without any operator exposure to moving rollers during string-up from source to take-up.
Prior Art Statement Stretched filaments of synthetic high polymers have been . l0 conventionally produced in good yields for many years in two distinct process stages, which are separated from one another in respect of both space and time. ~hat is to say, spinning is Eirst accomplished, generally at speeds up to about 1000 to lZ00 meters per minute, followed by a separate drawing step which is accomplished on a draw-twisting or draw-winding machine.
. A more recently developed method of obtaining stretched filaments of synthetic high polymers comprehends spinning and stretching contiruously, as in the so-called "spin-draw" processes, the latest modifications of which continuously combine spinning, stretching, and winding with interlacing tor intermingling~ and/or texturizing. Similarly the so-called "draw-texturizing" processes continuous}y combine stretching and winding with texturizing ; (and interlacing). Exemplary of the aforementioned processes are the inventions disclosed in the following patents: U.S. 2,289,860;
U.S. 3,452,130; U.S. 4,03;,464; U.S. 3,;55,803 and U.S. i,448,186.
~:
..
. . 2. ` ~
~ .~ .
, Nothwiths~anding the effic3cy of these and similar processes involving the drawing of filamentary polymeric ma~erial, they 1 ars all found wanting in or.e importane aspect; viz., string-up from source to take-up is not simply and efficiently accomplished, ; especially in coupled processes, and there is considerable operator e~posure to rollars moving at very high speeds. The present invention, which obviatas these difficulties and inadequacies of the prior art, is nowhere disclosed or remo~ely suggested by any of the processes or devices of the prior art.
SUMMARY OF THE I~V~ Q~
According to the present invention a device is provided comprising the followlng coactive components:
A. A roller assembly comprising al least thrae rollers, at least two o~ which are motorized, the rollers being spaced from each other iu a first position providing for passage of a filamentar/
polymeric material in a straight line from a source of supply thereof through space between the rollers and thence to a means for winding the filamentary polymeric material into a package on a support; and ::
3. ~leans for moving at least one roller to a second position providing for contact of the filamentary polymeric material with l the surfac0 of an upstream and a downstream motorized roller ovar ¦1 ¦ a su~iace a~gle of less th~n 360.
:~ I
:~ I
I
. ~.
....
~ ~ , :
, : ':
' !
I
As 3 result, the filamentary polymeric ma~erial adheres to the surfaces of che mo~orized rollers without slippago and is drawn between the ~pstream and do~nstream motori2ed rollers when these rollers are caused to move. String-up from source to take-up 5 has been effected simply and efficiently and without any opera-tor e~posure to moving rollers, and the device has be~n advanced into the operation mode, free of any comple~ity.
.An especially desirable and preferred embodiment of the present invention comprises the following cooperati~e combination of 10 elements:
A. First and second roller turrets spaced from each other, each roller turret comprising two motorized rollers which ars spaced from each other and communicate with each other by means of a cross-member joining the shafts thereof.
The motorized rollers of the first turret are designed to operate at a surface Yelocity of Vl and V~ respectively, and the motorized rollers of the second turret designed to operate at a surface ~elocity of V3 and V4 respectively, wherein Vl c V2, V3 c V4, and V2 c V_. The roller turrets are ini-tially disposed in a first position providing for passage orf filamentary polymeric material from a source of ! supply thereof through the space between the motorized .~ rollers of the first turret, thence through the space ~ between the motorized rollers of the second turret, and :¦ 25 thence to a means for winding the filamentary polymeric I ~ materisl in~o a pactage ~n a support and ~ 4.
.~' , .~
~3~st~
B. ~leans for rotating each roller turret in either a clock~
wise or counterclockwise direction through an angle less than 360 to a second position providing for contact af the filamentary polymeric material with the surface of each motorized roller over a surface angle of less than 360.
For the very best results, the surfaces of the motorized rollsrs should have a surface roughness height inde~ value of 32 ~S
or less.
'~hen the aforementioned preferred embodiment of the present invention is employed,filamentary polymeric material is wound into, a package at speeds up to and including 6,000 meters per minute.
~loreover, it has been found to be especially advantageous in the employment of the aforementioned preferred embodiment of the present invention if such embodiment additionally comprises ~a~ sensing means positioned downstream from the second roller turret for the detection of a break in the moving zhreadline of the filamentary polymeric material coupled with (b) interrupting means for stopping the rotation of the motorized rollers and returning the roller turrets to the first defined position thereof.
;
It is very convenient in the utilization of the aforementioned preferred embodiment of the present in~ention if the roller turrets thereof are rotated from the first ~o the second defined .. " 5.
~ ' j ~39L~
I
position thereof chrou~h an angle of about Z50; and most conveniently if the c^irst roller turret is rotated in a countercloch~ise direction, and the jecond roller curret is rotated in a clockwise direction. Under such conditions, opcimum results are conveniently achieved when the surface ` velocities of the motorized rollers are defined by the . following rola~ionships: Vl = V2; V; = V4; and Vz c V;.
BRI~F DESCRIPTION OF THE DRAWINGS
For a more complete understanding of the present invention, reference should be made to the Detailed Description of the Preferred Embodiments thereof, which is set forth below.
. This Detailed Description should be read together with the accompanying Drawings, wherein:
FIG. 1 is a perspective view, schemacically representing an especially preferred embodiment of the present invention in a Eirst defined position thereo, as hereinafter explained in detail;
FIG. 2 is a perspective view schematically representing the same embodiment in a second defined position thereof, as i 20 hereinafter explained in detail; and l FIG. 3 is a side view, schematically representing the ¦ embodiment of FIGS. 1 and 2, which is provided with additional coopera~ive components.
~:
i .
i^ ~ 6.
. ~ _ .
.3~5~
i DETAILED ~ESC_I_ ION OF THE_PREFERRED E~IBCD~IENTS
Referring now to the Drawings, a particularly preferred ambodiment of the present invention ~1~ is shown in ~IGS. 1 and 2. The embodiment comprises first roller turrst (la) s and second ~oller turret (lb). Roller turret tla) has two . motorized rollers (A) and (B), which are spaced from each other and communicate with each other by means of cross member (2), joining shats t4) of rollers ~A) and ~B). Roller turret ~lb) . has two motorized rollers ~C) and ~I)), which are spaced from each other and communicate with each other by means of cross member ~21), joining shafts ~4) of rol}ers ~C) and ~D).
~lotorized roller (A) is designed to operate at a surface velocity of Vl; motorized roller (B), of V2; mo~orized roller . (C), of V3; and motorized roller ~D), of V4. Surface velocity Vl is less than or equal to V2; surface velocity V~ is less . than or equal to V4; and V2 is less than V3.
FIG. 1 depicts roller turrets ~la) and lb) being disposed in a first position providing for passage of filamentary polymeric material ~8) from a source of supply thereof ~not shown) through the space between motorized rollers ~A) and (B), thence through the space between motorized rollers (C) and ~D), and thence to a means for winding the filamentary polymeric material into a package on a support ~not shown).
I
~; By means of pivots t3) and (31), roller turrets ~la) and ~lb) :l 25 are caused to rotate to a second position as shown in FIG. 2.
The rotation of the individual roller turrets may be either ln a clockwise or counterclockwise direction. In FIG. 2, roller turret (la) is shown as having been rotated in a I
~ 7.
.~ " .
__ , : :
,.i~ " .
~3~7~
counterclockwise direction, and rollar turret (lb) is shown as having been rotated in a cloc~ise directio~, presenting a c~nfiguration which is very conveni0ntly and advantageously employed. The rotation of each roller turret should be through 5 an angle of less than 360. FIG. 2 shows the rotatlon of roller turret ~la) through an angle of about 250 and the rotation of roller turret ~lb) through an angle of about 250, presenting a coniguration which has been found to be especially useful.
As a result of rotation of the individual roller turrets to the second position thereof, rilamentary polymeric material ~3) is caused to contact the surface of the motoriaed rollers . over a surface angle of less than 360, as seen in FIG. 2.
. ',~hen rollers ~A), ~3), ~C), and ~D) caused to rotate at suTface velocities Vl, Vg, V3, and V4, respectively, as hereinbefore set forth, ilamentary polymeric material ~S) adheres to the surfaces of the motorized rollers without slippage and is drawn betwesn the first and second roller turrets. Fspecially good results are achieved when the surfaces o~ the motori~ed rollers have a surface roughness height inde~ valus of 32 RMS
or less, and most advantageouely 10 RMS or less. Under such conditions, filamentary polymeric material ~8~ is drawn and wound onto a package at speeds up to and including 6,000 meters per minute. For special convsnience in operation and very advantageous results, the following re}ationships have been determined: Vl - Y2, within the range 500 m/min to 3700 m/min;
. V3 ~ V4, within the range 1800 m/min to 4700 m/min; Vg being in any event less than V3. As is understood by those of skill in this art, filamentary polymeric material ~8) is ordinarily treated with water or an appropriate standard finish composition before being stretched in a device according ~o the present invention.
:
~: :
.
.
!"`
~.~3~57~
Referring now to FIG. ~, there is shown the same embodimen~
depicted in FIGS. 1 and 2, e~cep~ that there are additional elements cooperacing in the basic com~ination. In particular, sensing means t5), which is positioned downstream from the second roller turret, detects any interruption in the moving threadline of the filamentary polymeric material t8). Such sensing means "~hich are usually based upon photoelectric, capacitance, or pneumatic principles, are readily available commercially. The output signal from such sensing means t5), which is indicated by the dotted line emanating therefrom, is transmitted to interrupting means (7), which stops the rota~ion of the individual motorized rollers and effects the return of the roller turrets to their first defined position, as set . forth hereinabove. Such mechanisms are readily available commercially. In addition, the output signal from sensing means ~5) may be transmitted to standard cutting means (6), which severs the threadline of the filamentary polymeric material (8~, in order to prevent fouling of the motori2ed rollers and to facilitate a subsequent string-up procedure.
~he present invention has been described in detail with respect to certain preferred embodiments thereof. As is understood by those of skill in the art, variations and modifications in this detail may be effected without any departure from the spirit and scope of the present invention, as defined in the hereto-appended claims.
.
Il 1 . 9.
. .
:
Claims (8)
1. A device for drawing filamentary polymeric material, which device comprises:
A. A roller assembly comprising at least three rollers, at least two of which are motorized, the rollers being spaced from each other in a first position providing for passage of filamentary polymeric material in a straight line from a source of supply thereof through space between the rollers and thence to a means for winding the filamentary polymeric material into a package on a support; and B. Means for moving a roller to a second position providing for contact of the filamentary polymeric material with the surface of an upstream and a downstream motorized roller over a surface angle of less than 360°;
Whereby the filamentary polymeric material adheres to the surfaces of the motorized rollers without slippage and is drawn between the upstream and downstream motorized rollers when the rollers are caused to move, string-up from source to take-up having been effected simply and efficiently and without any operator exposure to moving rollers.
A. A roller assembly comprising at least three rollers, at least two of which are motorized, the rollers being spaced from each other in a first position providing for passage of filamentary polymeric material in a straight line from a source of supply thereof through space between the rollers and thence to a means for winding the filamentary polymeric material into a package on a support; and B. Means for moving a roller to a second position providing for contact of the filamentary polymeric material with the surface of an upstream and a downstream motorized roller over a surface angle of less than 360°;
Whereby the filamentary polymeric material adheres to the surfaces of the motorized rollers without slippage and is drawn between the upstream and downstream motorized rollers when the rollers are caused to move, string-up from source to take-up having been effected simply and efficiently and without any operator exposure to moving rollers.
2. A device for drawing filamentary polymeric material, which device comprises:
A. First and second roller turrets spaced from each other, each roller turret comprising two motorized rollers which are spaced from each other and communicate with each other by means of a cross-member joining the shafts thereof; the motorized rollers of the first turret designed to operate at a surface velocity of Vl and V2 respectively, and the motorized rollers of the second turret designed to operate at a surface velocity of V3 and V4 respectively, wherein Vl ? V2, V3 ? V4, and V2 ? V3; the roller turrets being disposed in a first position providing for passage of filamentary polymeric material from a source of supply thereof through the space between the motorized rollers of the first turret, thence through the space between the motorized rollers of the second turret, and thence to a means for winding the filamentary polymeric material into a package on a support; and B. Means for rotating each roller turret in either a clock-wise or counterclockwise direction through an angle less than 360° to a second position providing for contact of the filamentary polymeric material with the surface of each motorized roller over a surface angle of less than 360°
Whereby the filamentary polymeric material adheres to the surfaces of the motorized rollers without slippage and is drawn between the first and second roller turrets when the motorized rollers are all caused to rotate, string-up from source to take-up having been effected simply and efficiently and without any operator exposure to moving rollers.
A. First and second roller turrets spaced from each other, each roller turret comprising two motorized rollers which are spaced from each other and communicate with each other by means of a cross-member joining the shafts thereof; the motorized rollers of the first turret designed to operate at a surface velocity of Vl and V2 respectively, and the motorized rollers of the second turret designed to operate at a surface velocity of V3 and V4 respectively, wherein Vl ? V2, V3 ? V4, and V2 ? V3; the roller turrets being disposed in a first position providing for passage of filamentary polymeric material from a source of supply thereof through the space between the motorized rollers of the first turret, thence through the space between the motorized rollers of the second turret, and thence to a means for winding the filamentary polymeric material into a package on a support; and B. Means for rotating each roller turret in either a clock-wise or counterclockwise direction through an angle less than 360° to a second position providing for contact of the filamentary polymeric material with the surface of each motorized roller over a surface angle of less than 360°
Whereby the filamentary polymeric material adheres to the surfaces of the motorized rollers without slippage and is drawn between the first and second roller turrets when the motorized rollers are all caused to rotate, string-up from source to take-up having been effected simply and efficiently and without any operator exposure to moving rollers.
3. The device of claim 2, wherein the surfaces of the motorized rollers have a surface roughness height index value of 32 RMS
or less.
or less.
4. The device of claim 2, wherein the filamentary polymeric material is wound into a package at speeds up to and including 6,000 meters per minute.
5. The device of claim 2, which additionally comprises (a) sensing means positioned downstream from the second roller turret for the detection of a break in the moving threadline of the filamentary polymeric material coupled with (B) interrupting means for stopping the rotation of the motorized rollers and returning the roller turrets to the first defined position thereof.
6. The device of claim 2, wherein the roller turrets are rotated from the first to the second defined position thereof through an angle of about 250°.
7. The device of claim 6, wherein the first roller turret is rotated in a counterclockwise direction and the second roller turret is rotated in a clockwise direction.
8. The device of claim 7, wherein the surface velocities of the motorized rollers are defined by the relationships:
V1 = V2 , V3 = V4, and V2 < V3.
V1 = V2 , V3 = V4, and V2 < V3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000359528A CA1134575A (en) | 1980-09-04 | 1980-09-04 | Linear draw system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000359528A CA1134575A (en) | 1980-09-04 | 1980-09-04 | Linear draw system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1134575A true CA1134575A (en) | 1982-11-02 |
Family
ID=4117802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000359528A Expired CA1134575A (en) | 1980-09-04 | 1980-09-04 | Linear draw system |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1134575A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4868959A (en) * | 1983-12-01 | 1989-09-26 | Barmag Ag | Apparatus for processing a warp sheet of yarns |
| US5012563A (en) * | 1989-03-22 | 1991-05-07 | Karl Mayer Textilmaschinenfabrik Gmbh | Stretching arrangement for stretching of plastic threads |
-
1980
- 1980-09-04 CA CA000359528A patent/CA1134575A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4868959A (en) * | 1983-12-01 | 1989-09-26 | Barmag Ag | Apparatus for processing a warp sheet of yarns |
| US4905355A (en) * | 1983-12-01 | 1990-03-06 | Barmag Ag | Apparatus for processing a warp sheet of yarns |
| US5012563A (en) * | 1989-03-22 | 1991-05-07 | Karl Mayer Textilmaschinenfabrik Gmbh | Stretching arrangement for stretching of plastic threads |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2832642A (en) | Crinkling device | |
| CA2175875A1 (en) | Process for preparing poly(trimethylene terephthalate) yarns | |
| KR19990044509A (en) | Synthetic yarn manufacturing equipment | |
| US4570312A (en) | Method and apparatus for producing entangled yarn | |
| CA1134575A (en) | Linear draw system | |
| KR960700955A (en) | PROCESS AND DEVICE FOR MARKING THE END OF A THREAD WOUND ON A SPPOL AND DEVICE FOR IMPLEMENTING IT | |
| GB1526247A (en) | Winding threads of thermoplastic material | |
| US3672143A (en) | Doffing apparatus and method | |
| US3805344A (en) | Variable feed means for jet texturing apparatus | |
| GB1485794A (en) | Method of manufacturing a textured yarn | |
| US3115743A (en) | Supporting means for a thread turning tube | |
| GB1260550A (en) | An improved apparatus for manufacturing a fluffy yarn | |
| EP0047348B1 (en) | Apparatus for drawing filamentary polymeric material | |
| GB1422536A (en) | Unstretched polyethylene terephthalate yarn in continuous stretching and false twist texturizing processes | |
| IE39791B1 (en) | Spin strechting crimping and spin stretch-texturing of multifilament yarns | |
| JP2628969B2 (en) | Winding method of elastic yarn | |
| US3495390A (en) | False twisting method and apparatus | |
| GB1213701A (en) | Method and apparatus for manufacturing a plied yarn | |
| US3794252A (en) | Detecting means for yarn processing apparatus | |
| US3815350A (en) | Process for the production of yarns | |
| US4185451A (en) | Apparatus and process suitable for twist-drawing a yarn | |
| US3869758A (en) | Apparatus for manufacturing composite rovings | |
| IE44563B1 (en) | A method of avoiding or preventing low-order ribbon windins in the window of filaments | |
| KR860003367A (en) | Method for manufacturing regular slope of thermoplastic synthetic monofilament yarn | |
| JPH0226913A (en) | Detection of yarn breakage |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |