USH502H - High speed precision optical fiber winding system - Google Patents
High speed precision optical fiber winding system Download PDFInfo
- Publication number
- USH502H USH502H US07/136,053 US13605387A USH502H US H502 H USH502 H US H502H US 13605387 A US13605387 A US 13605387A US H502 H USH502 H US H502H
- Authority
- US
- United States
- Prior art keywords
- bobbin
- fiber
- traversing
- degrees
- angle
- 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.)
- Abandoned
Links
- 238000004804 winding Methods 0.000 title claims abstract description 23
- 239000013307 optical fiber Substances 0.000 title description 8
- 239000000835 fiber Substances 0.000 claims abstract description 43
- 238000000034 method Methods 0.000 claims abstract description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 claims 1
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims 1
- 230000007704 transition Effects 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H54/00—Winding, coiling, or depositing filamentary material
- B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
- B65H54/28—Traversing devices; Package-shaping arrangements
- B65H54/2848—Arrangements for aligned winding
- B65H54/2854—Detection or control of aligned winding or reversal
- B65H54/2869—Control of the rotating speed of the reel or the traversing speed for aligned winding
- B65H54/2872—Control of the rotating speed of the reel or the traversing speed for aligned winding by detection of the incidence angle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H55/00—Wound packages of filamentary material
- B65H55/04—Wound packages of filamentary material characterised by method of winding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/32—Optical fibres or optical cables
Definitions
- improper reversal of winding direction can result in gaps or spaces between adjacent turns of the fiber at the ends of the layer. A portion of a turn of the fiber layer in the next layer to be wound can slump into this gap and cause the fiber to be pulled off the bobbin at an uneven tension.
- the bobbin is rotated until the layer is formed on the bobbin to the desired point and then the bobbin is alternately traversed and rotated in small increments through several cycles to precisely begin the formation of the layer extending in the other direction on the bobbin.
- FIG. 1 is a schematic view of apparatus used in carrying out the process of this invention.
- FIG. 2 is a schematic view showing the fiber being wound onto the bobbin at a lag or negative angle.
- FIG. 3 is a schematic view showing the fiber being wound onto the bobbin at a lead or positive angle.
- FIGS. 4a through 4g show in a schematic way the positioning of the bobbin and the various fiber lag and lead angles used in reversing the direction of winding at the end of a layer.
- FIG. 5 is a greatly enlarged view showing the manner in which several layers of fiber winding are positioned when the process of this invention are used.
- FIG. 1 there is known in FIG. 1 an optical fiber 11 being fed from a supply spool 12 through an eyelet 13 for takeup on a bobbin 16.
- the optical fiber which has a diameter of about 0.25 millimeters, passes through a tension unit 17 of a conventional type which controls the tension in the span of the fiber between the supply spool 12 and the bobbin 16 to assure that the fiber is being wound onto the bobbin 16 at a substantially constant tension.
- a tension unit 17 Positioned between the eyelet 13 and the bobbin 16 is an array of photodiodes 20 (individual photodiodes not shown) over which the fiber 11 passes. Colimated light from a source (not shown) casts a shadow of the fiber onto the diode array. If the photodiodes are positioned on centers about equivalent to the diameter of fiber 11, then one of the photodiodes will be darkened by the shadow of fiber 11.
- a computer 21 connected to the diode array 20 senses the output of the various diodes in the array 20 to precisely determine the angle at which the fiber 11 is being fed to the bobbin 16. Inasmuch as the photodiodes in the array 20 are very small and can be readily positioned on centers equivalent to the diameter of fiber 11, the computer 21 can, by sensing the particular photodiode which is darkened by the shadow of the fiber, determine precisely what the fiber feed angle is.
- the bobbin 16 is mounted for rotation on a platform 22 which is mounted for traversing back and forth past the eyelet 13.
- a first motor 24, connected to the computer 21, is connected to the bobbin 16 by a shaft 25 to rotate the bobbin 16 for taking the fiber up on the bobbin.
- a second motor 26 connected to the platform 22 by a lead screw 27 serves to traverse the platform, and thus the bobbin, back and forth past the eyelet 13. This structure is conventional. Both motors are connected to and controlled by the computer 21.
- FIGS. 2 and 3 illustrate both lag (negative) and lead (positive) angles at which the fiber 11 can be fed onto the bobbin 16.
- the fiber 11 between the eyelet 13 and contact with the surface of the bobbin 16 lies in a plane which passes through the eyelet 13 and is tangent to the bobbin.
- the angle to be sensed is that angle, lying in the aforementioned plane, between the fiber and a line which passes through the eyelet 13 and is tangent to the bobbin.
- FIG. 4a shows the termination of the winding of a layer of fiber on the bobbin 16, with both rotation and traversing of the bobbin being stopped at this point.
- the winding of this layer has been done at a lag angle (negative angle) of about 0.075° to 0.095°. Preferably, this angle is about 0.085°.
- FIG. 4b illustrates the next step in the process. Without rotation of the bobbin, the bobbin is traversed until the sensed angle is a lead angle (positive angle) of about 0.2 to 0.5 degrees, at which point the traversing of the bobbin is stopped. Preferably, this angle is about 0.35°.
- the bobbin is traversed until the sensed angle is a lead angle of about 2 to 3 degrees, at which the time traversal of the bobbin is stopped. Preferably, this angle is about 2.5°.
- the bobbin is rotated until the sensed angle is a lead angle of about 1.6 to 2.1 degrees, at which time rotation of the bobbin 16 is stopped. Preferably, this angle is about 1.8°.
- the bobbin is traversed until the sensed angle is a lead angle of about 0.5 to 0.9 degrees, at which time traversal of the bobbin is stopped. Preferably, this angle is about 0.7°.
- FIG. 5 is a greatly enlarged view showing several layers which have been wound using this process. There are no gaps in the ends of the layers and, because each turn lies in the groove formed by two adjacent turns in the next lower layer, turns at the ends of the layers are not likely to slough off. Also, this process prevents the formation of gaps or spaces between adjacent turns in the layers wound on the bobbin.
Abstract
A process for terminating the winding of one fiber layer being wound on a bbin in one direction and beginning the winding of another layer in the opposite direction wherein the bobbin is alternately rotated and traversed in small increments to obtain a transition from one layer to another which is free of gaps between adjacent turns in a layer and which does not slough off the bobbin.
Description
The invention described herein may be manufactured, used, and licensed by or for the Government for governmental purposes without the payment to me of any royalties thereon.
Optical fibers are used in certain missile guidance systems, information being transmitted back and forth from a control station through the optical fiber to the moving missile. The optical fiber is stored on a bobbin in the missile and is paid out as the missile travels toward the target. Because of the high rate of speed of the missile and the consequent high rate at which the fiber is pulled off the bobbin, the fiber must be very carefully wound onto the bobbin to avoid damage to the fiber as it is pulled off the bobbin. It is for this reason that very great care must be taken in winding optical fiber onto a bobbin which is to be used for the transmission of data between a control station and a moving missile.
Equipment has been developed for very precisely measuring the angle at which the fiber is wound onto the bobbin and for traversing the bobbin past an eyelet through which an optical fiber passes to obtain the very precise winding of a layer of fiber on the bobbin. However, a very real difficulty arises when the end of the layer of fiber being wound in one direction is reached and the direction of movement of the bobbin past the eyelet is reversed to wind another layer in the opposite direction. If the winding direction traversal is not done with great precision the end turns in the layer may slough off, resulting in uneven tension when the fiber is pulled from the bobbin. When the fiber is pulled off the bobbin at a very high rate of speed, uneven tension in the fiber can cause the fiber to break. Also, improper reversal of winding direction can result in gaps or spaces between adjacent turns of the fiber at the ends of the layer. A portion of a turn of the fiber layer in the next layer to be wound can slump into this gap and cause the fiber to be pulled off the bobbin at an uneven tension.
A process for terminating the winding of one fiber layer being wound on a bobbin in one direction and beginning the winding of another layer in the opposite direction, wherein the bobbin is mounted for rotation and for traversing back and forth past an eyelet through which the fiber is fed. The bobbin is rotated until the layer is formed on the bobbin to the desired point and then the bobbin is alternately traversed and rotated in small increments through several cycles to precisely begin the formation of the layer extending in the other direction on the bobbin.
FIG. 1 is a schematic view of apparatus used in carrying out the process of this invention.
FIG. 2 is a schematic view showing the fiber being wound onto the bobbin at a lag or negative angle.
FIG. 3 is a schematic view showing the fiber being wound onto the bobbin at a lead or positive angle.
FIGS. 4a through 4g show in a schematic way the positioning of the bobbin and the various fiber lag and lead angles used in reversing the direction of winding at the end of a layer.
FIG. 5 is a greatly enlarged view showing the manner in which several layers of fiber winding are positioned when the process of this invention are used.
Referring now in detail to the drawings, there is known in FIG. 1 an optical fiber 11 being fed from a supply spool 12 through an eyelet 13 for takeup on a bobbin 16. The optical fiber, which has a diameter of about 0.25 millimeters, passes through a tension unit 17 of a conventional type which controls the tension in the span of the fiber between the supply spool 12 and the bobbin 16 to assure that the fiber is being wound onto the bobbin 16 at a substantially constant tension. Positioned between the eyelet 13 and the bobbin 16 is an array of photodiodes 20 (individual photodiodes not shown) over which the fiber 11 passes. Colimated light from a source (not shown) casts a shadow of the fiber onto the diode array. If the photodiodes are positioned on centers about equivalent to the diameter of fiber 11, then one of the photodiodes will be darkened by the shadow of fiber 11.
A computer 21 connected to the diode array 20 senses the output of the various diodes in the array 20 to precisely determine the angle at which the fiber 11 is being fed to the bobbin 16. Inasmuch as the photodiodes in the array 20 are very small and can be readily positioned on centers equivalent to the diameter of fiber 11, the computer 21 can, by sensing the particular photodiode which is darkened by the shadow of the fiber, determine precisely what the fiber feed angle is.
The bobbin 16 is mounted for rotation on a platform 22 which is mounted for traversing back and forth past the eyelet 13. A first motor 24, connected to the computer 21, is connected to the bobbin 16 by a shaft 25 to rotate the bobbin 16 for taking the fiber up on the bobbin. A second motor 26 connected to the platform 22 by a lead screw 27 serves to traverse the platform, and thus the bobbin, back and forth past the eyelet 13. This structure is conventional. Both motors are connected to and controlled by the computer 21.
FIGS. 2 and 3 illustrate both lag (negative) and lead (positive) angles at which the fiber 11 can be fed onto the bobbin 16. The fiber 11 between the eyelet 13 and contact with the surface of the bobbin 16 lies in a plane which passes through the eyelet 13 and is tangent to the bobbin. The angle to be sensed is that angle, lying in the aforementioned plane, between the fiber and a line which passes through the eyelet 13 and is tangent to the bobbin.
In FIG. 2, where the angle sensed is a lag or negative angle, it will be noticed that, with respect to winding direction, the eyelet 13 lags behind the point at which the fiber first contacts the bobbin 16. In FIG. 3, where the angle sensed is a lead or positive angle, it will be noticed that, with respect to winding direction, the eyelet 13 leads the point at which the fiber 11 first contacts the bobbin 16. It should be understood that as a fiber layer is wound from one end of the bobbin to the other, a lag angle as illustrated in FIG. 2 is used.
FIGS. 4a through 4g represent, in sequence, the steps involved in carrying out the process of the present invention, these steps forming a precise transition of the winding of one layer in one direction to the winding of the next layer in the opposite direction. Each of the steps shown in FIGS. 4a through 4g is controlled by the computer 21 (FIG. 1), with the fiber feed angle being greatly exaggerated in these figures for purposes of illustration.
FIG. 4a shows the termination of the winding of a layer of fiber on the bobbin 16, with both rotation and traversing of the bobbin being stopped at this point. The winding of this layer has been done at a lag angle (negative angle) of about 0.075° to 0.095°. Preferably, this angle is about 0.085°.
FIG. 4b illustrates the next step in the process. Without rotation of the bobbin, the bobbin is traversed until the sensed angle is a lead angle (positive angle) of about 0.2 to 0.5 degrees, at which point the traversing of the bobbin is stopped. Preferably, this angle is about 0.35°.
In FIG. 4c, without traversing the bobbin 16, the bobbin is rotated until the sensed angle is substantially zero, at which time rotation of the bobbin is stopped.
In FIG. 4d, without rotation of the bobbin 16, the bobbin is traversed until the sensed angle is a lead angle of about 2 to 3 degrees, at which the time traversal of the bobbin is stopped. Preferably, this angle is about 2.5°.
In FIG. 4e, without traversal of the bobbin 16, the bobbin is rotated until the sensed angle is a lead angle of about 1.6 to 2.1 degrees, at which time rotation of the bobbin 16 is stopped. Preferably, this angle is about 1.8°.
In FIG. 4f, without rotation of the bobbin 16, the bobbin is traversed until the sensed angle is a lead angle of about 0.5 to 0.9 degrees, at which time traversal of the bobbin is stopped. Preferably, this angle is about 0.7°.
In FIG. 4g, without traversing the bobbin, the bobbin is rotated until the sensed angle is a lag angle of about 0.075 to 0.095 degrees, preferably about 0.085°.
This completes the reversal of the winding direction and the winding of the next layer is continued at the lag angle shown in FIG. 4g. When the next layer is completed the winding direction is reversed using the steps described above.
FIG. 5 is a greatly enlarged view showing several layers which have been wound using this process. There are no gaps in the ends of the layers and, because each turn lies in the groove formed by two adjacent turns in the next lower layer, turns at the ends of the layers are not likely to slough off. Also, this process prevents the formation of gaps or spaces between adjacent turns in the layers wound on the bobbin.
Claims (2)
1. A process for terminating the winding of one fiber layer being wound on a bobbin in one direction and beginning the winding of another layer in the opposite direction, comprising;
a. providing: a fiber supply, a bobbin onto which the filer is to be wound, a fiber guide positioned adjacent to the bobbin, means for rotating the bobbin, means for traversing the bobbin back and forth past the guide, means positioned between the guide and the bobbin for sensing the angle between the fiber and a line extending through the guide and tangent to the bobbin, and means connected to the sensing means for controlling the rotation and traversing means,
b. rotating and traversing the bobbin to form said one layer to a desired point on the bobbin and then stopping the rotation and traversing of the bobbin to terminate the formation of said one layer,
c. traversing the bobbin until the sensed angle is about +0.2 to +0.5 degrees, and then stopping said traversing,
d. rotating the bobbin until the sensed angle is substantially zero and then stopping said rotating,
e. traversing the bobbin until the sensed angle is about +2 to +3 degrees and then stopping said traversing,
f. rotating the bobbin until the sensed angle is reduced to about +1.6 to +2.1 degrees and then stopping said rotating,
g. traversing the bobbin until the sensed angle is reduced to about +0.5 to +0.9 degrees and then stopping said traversing,
h. rotating the bobbin until the sensed angle is about -0.075 to -0.095 degrees and,
i. winding said another layer while traversing the bobbin to maintain the sensed angle at about -0.075 to -0.095 degrees.
2. The process for claim 1 wherein the filament diameter is about 0.25 milimeters, the sensed angle in step c is about +0.3 degrees, the sensed angle in step e is about +2.5 degrees, the sensed angle in step f is about +1.9 degrees, the sensed angle in step g is about +0.7 degrees, and the sensed angle in steps h and i are each about -0.085 degrees.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/136,053 USH502H (en) | 1987-12-21 | 1987-12-21 | High speed precision optical fiber winding system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/136,053 USH502H (en) | 1987-12-21 | 1987-12-21 | High speed precision optical fiber winding system |
Publications (1)
Publication Number | Publication Date |
---|---|
USH502H true USH502H (en) | 1988-08-02 |
Family
ID=22471042
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/136,053 Abandoned USH502H (en) | 1987-12-21 | 1987-12-21 | High speed precision optical fiber winding system |
Country Status (1)
Country | Link |
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US (1) | USH502H (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2669315A1 (en) * | 1990-11-15 | 1992-05-22 | Rheinmetall Gmbh | METHOD AND DEVICE FOR CONTROLLING THE WINDING OF ORTHOCYCLIC WINDING COILS. |
US5186781A (en) * | 1988-11-23 | 1993-02-16 | Hughes Aircraft Company | Application of adhesive during optical fiber canister winding |
DE19508051A1 (en) * | 1995-02-23 | 1996-08-29 | Hermann Jockisch | Coiling elongated material direction change point detection appts. |
US5703991A (en) * | 1995-08-22 | 1997-12-30 | Fujitsu Limited | Optical part module reduced in size and printed board package having such an optical part module |
US5921487A (en) * | 1995-07-18 | 1999-07-13 | C. D. Walzholz Produktions--Gesellschaft mbH | Device for winding electric tape to give a coil |
US6090884A (en) * | 1998-05-07 | 2000-07-18 | S. C. Johnson Commercial Markets, Inc. | Starch degradation/graft polymerization composition, process, and uses thereof |
-
1987
- 1987-12-21 US US07/136,053 patent/USH502H/en not_active Abandoned
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5186781A (en) * | 1988-11-23 | 1993-02-16 | Hughes Aircraft Company | Application of adhesive during optical fiber canister winding |
FR2669315A1 (en) * | 1990-11-15 | 1992-05-22 | Rheinmetall Gmbh | METHOD AND DEVICE FOR CONTROLLING THE WINDING OF ORTHOCYCLIC WINDING COILS. |
DE19508051A1 (en) * | 1995-02-23 | 1996-08-29 | Hermann Jockisch | Coiling elongated material direction change point detection appts. |
US5921487A (en) * | 1995-07-18 | 1999-07-13 | C. D. Walzholz Produktions--Gesellschaft mbH | Device for winding electric tape to give a coil |
US5703991A (en) * | 1995-08-22 | 1997-12-30 | Fujitsu Limited | Optical part module reduced in size and printed board package having such an optical part module |
US6090884A (en) * | 1998-05-07 | 2000-07-18 | S. C. Johnson Commercial Markets, Inc. | Starch degradation/graft polymerization composition, process, and uses thereof |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: UNITED STATES OF AMERICA, THE, AS REPRESENTED BY T Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HUNG, JAMES C.;REEL/FRAME:004890/0787 Effective date: 19871214 |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |