CN1217395A

CN1217395A - Method for reducing or preventing damage of fiber wound on reel

Info

Publication number: CN1217395A
Application number: CN98115513A
Authority: CN
Inventors: 马克S·托塔; T·斯坦·沃尔顿
Original assignee: Corning Inc
Current assignee: Corning Inc
Priority date: 1997-06-23
Filing date: 1998-06-23
Publication date: 1999-05-26
Also published as: AU7195898A; ID20449A; CA2238841A1; TW355178B; JPH11106232A; EP0887298A1; BR9802044A

Abstract

A method for reducing or preventing damage to a fiber being wound on a spool, caused by the whipping action of a loose fiber end against fiber already wound on the spool. The method includes the steps of capturing the loose end of a fiber that is being wound on a spool against the inside surface of a non-circular guard that substantially surrounds the spool. While the spool rotates, the fiber end is maintained against the inner surface of the guard by centrifugal force, thereby maintaining separation of the free end of the fiber from the fiber already wound on the spool.

Description

A kind of method that is used to reduce or prevent to be wrapped in the fibre damage on the spool

The present invention relates to a kind of method that fiber on the spinning reel such as optical fiber damage because of the whipping action that unclamps end that is wrapped in the fiber on this spool that is used to prevent from just to be wrapped in.

In optical fiber or plastic filament manufacturing industry, be fiber that length is very long or filament be wrapped at a high speed by on the spool of machine driven rotary for transportation and carrying.Because fiber is wrapped on the spool, so fiber is layer by layer on this spool.In optical fiber industry, it is to occur in two common positions that fiber is wrapped on the spool, promptly originally draws the wire-drawer-tower of fiber and can screen station to the off-line that fiber is tested.In above-mentioned each position, the speed that all can surpass 20 meters of per seconds is twined fiber and is kept with quite high pulling force.

Twine in the course of action at these, fiber all can rupture because of the power that machine applies.When fibrous fracture, the end that unclamps of fiber can be to carry out whipping at a high speed owing to the fast rotational of spool.The uncontrolled fibre end that unclamps carries out whipping and can cause 5 to 6 layers of fibre damage of as many as for the fiber that is wrapped on this spool.In optical fiber industry, this can damage about 500 meters fiber.What rupture is uncertain, and this moment, machine must stop immediately to avoid whipping damaged fiber.Yet because fracture is uncertain and make spool stop to need the time, spool will continue rotation inevitably in a period of time, and fibre end has been wrapped in free whipping the fiber on this spool and has caused this fibre damage.

It is desirable to, if this spool is suspended in the free space, then since the free end of this fiber will not impact a barrier and turn back on the fibre reel again, so there is not the situation of whipping damage.Yet in most of the cases, manufacturer has protector or has the protector of installing for security reason.In many windings application scenario, the protector that twines on the machine comprises that a square box or around spool is parallel to the shutter that spool is installed.The purpose of these protectors be to prevent fiber after fracture towards operator's whipping.Yet in fact the protector of these types has increased the probability that fibre tip impacts fiber spool.Any type of angled surface all allows the free end of fiber to impact its edge on the protector, thereby fiber is bounce back on the spool again.

In addition, must there be an opening to be wrapped on the spool on the protector to allow fiber.Any type of opening all will produce an angled edge, and this edge produces above-mentioned whipping action at fiber end again conversely.And a positive circular protector does not provide interception and keeps fiber end away from the necessary surface texture of spool.

The present invention provides a kind of in order to reduce or to prevent to damage the new method that just is being wrapped in the fiber on the spool by the above-mentioned one or more problems that overcome relevant fiber and twine.The invention provides a kind of reduce or prevent because of unclamping fibre end damage the new method that is wrapped in the fiber on the spool for the whipping action that is wrapped in the fiber on the spool.

Major advantage of the present invention has provided a kind of device, this device avoided existing apparatus about or a plurality of restriction and shortcoming.In the spool rotary course, keep reclining roughly around the smooth surface of the protector of this spool by free end, can significantly reduce or prevent fully the whipping of fiber on the spool is damaged fiber.

Other characteristics of the present invention and advantage will be mentioned in the following description, and a part will obviously or by practice of the present invention be learnt by the following description.Purpose of the present invention and other advantage will realize by the process that specification and claims and accompanying drawing are specifically noted and reach.

By realizing these and other advantage and according to being implemented and broadly described purpose of the present invention, the present invention a kind ofly is used to reduce or prevents to damage the method that is wrapped in the fiber on the spool, it may further comprise the steps: fiber is wrapped on the spool of a rotation, this spool roughly has a non-circular protector of facing the smooth continuous inner surface of this spool by one and centers on; One free end of fiber is abutted on the inlet surface of protector; In the spool rotary course, make this fibre end keep abutting on the protector inner surface, thereby make the free end of this fiber and the fibrous septum distance that is wrapped on the spool.

The present invention also can comprise makes fiber all keep abutting in step on the protector inner surface when the various rotation number of degrees of spool.The free end of this fiber is turning at least 90 °, 180 ° or 270 ° but can keep abutting on the inner surface of this protector after being involved in the inlet surface of protector during less than 360 ° when this spool.

Should be appreciated that aforementioned general description and following specific descriptions all are schematic and indicative, purpose is to provide further explanation for claim of the present invention.

Accompanying drawing system is used to provide to further understanding of the present invention and constitutes the part of this specification, and these accompanying drawings illustrate one embodiment of the invention and are used for explaining principle of the present invention with specification.

The accompanying drawing simple declaration:

Fig. 1 is the side view of prior art filament-wound device.

Fig. 2 is the side view of prior art filament-wound device that the whipping action of broken fiber is shown.

Fig. 3 is the side view according to an embodiment of protector of the present invention.

Fig. 4-9 is the side view of protector shown in Figure 3, is that the order track of fibre end around protector unclamped in further expression.

Fig. 1 illustrates the side view of a prior art filament-wound device.Fiber 1 just is wrapped on the spool 2 by the higher rate with for example 30 meter per seconds.Spool 2 is contained on the bearing 3.Fiber 1 is maintained under the quite high tensile force guaranteeing and suitably is wrapped on the spool 2.As fiber is optical fiber, and then it can be directly by the wire-drawing frame (not shown) of any known type or the screening plant (not shown) supply of a known type.

It is desirable to, if this spool by unsettled in free space, then do not need any case or protector around this spool.Yet, as shown in Figure 1, just in case fibrous fracture injury stands near the operator the spool protector 4 is installed in the back of spool 2 in order to prevent.In fact, as fruit fiber 1 fracture, the fiber end that unclamps will get rid of the protection unit 4 that goes back on defense.

Yet as shown in Figure 2, what fiber can be thrown to will cause that as any type of corner on this protector shown in the label 5 fiber end or afterbody itself twine and get rid of back fiber spool around this corner.For avoiding, can it be accommodated by blocking fibre end with a smooth surface retaining around spool because of the whipping damaged fiber.Spool is enclosed in makes fibre end leave fiber spool in the cylinder because of the centrifugal force of spinning reel.Yet, an inlet that enters cylinder for fiber must be arranged.As mentioned above, any type of opening all will produce a serious whipping source for fiber.Therefore, in the winding operation process, must allow fiber to enter spool.Right circular cylinder around the shipment spool does not prevent that the fiber whipping from causing the damage of fiber spool.

Come concrete reference preferred embodiment of the present invention now, an one example illustrates in the accompanying drawings.Fig. 3 illustrates illustrative examples of the present invention, and represents with label 10 usually.

As shown in the Examples, the present invention relates to a kind of method that is used to reduce or prevent to damage the fiber that is just twining on spool, this method comprises some steps.As shown in Figure 3, in two phase place processes, fibre tip is controlled in generation fracture back according to protector 10 of the present invention.First phase place is should enter the place to fiber spool in the tip after fracture.During fibrous fracture, it is upspring and gets a direct high speed track around the belt pulley of wire drawing or screening plant and enters spool, initial stage and cause fibre damage.Second phase place is that fiber rotates continuously around fibre reel.The fibre end of rotation can impact a surface and bounce back into again with enough energy and cause fibre damage in the fibre reel.For guaranteeing not damaged fiber reel, the interval between fibre tip and the spool is necessary for maximum.

First step of the present invention is that fiber is wound on the spool of a rotation, and this spool is centered on by a non-circular protector 10 basically.Protector 0 preferably has a smooth and continuous inner surface in the face of spool.This smooth surface helps to prevent that fiber from bouncing back on the fiber spool again.

Fig. 4 illustrates a fiber track of launching out after fibrous fracture.Since the direction of high-tension in the fiber and spool rotation, fiber can direct whipping when fracture takes place in the spool zone.For the free end that prevents fiber 1 impacts the fiber that is wrapped on the spool 2, be provided with arch portion A1 to guarantee the impact of fiber end for protector hold-down arm 6 right sides.Arch portion A1 limits the protector inlet surface.

For preventing the free end damaged fiber reel of fiber 1, next step of the present invention is to make the free end of fiber 1 be posted by the inlet surface of protector 10 when spool rotates.Fig. 5 illustrates the free end that just is intercepted at the fiber 1 on the interior inlet surface that is formed by arch portion A1.The end that unclamps of interception fiber 1 is realized by smooth arcuate surface is provided in a position, when approaching spool 2 with the free end when fiber 1, impacts the surface of protector 10 earlier before impacting fiber spool.Interception is to combine by the centrifugal force that arch inlet surface A1 and A2 and rotation by spool 2 are applied to fiber end to realize.

For the free end of guaranteeing fiber 1 does not rebound again and impacts fiber spool, last step of the present invention is to make fibre end keep abutting on the inner surface of protector 10 when spool rotates, thereby makes the free end of fiber and the fiber that is wrapped on the spool keep spacing distance.Be preferably at the spool half-twist and make fiber end keep abutting on the inner surface of protector 10, it is then better to keep reclining when Rotate 180 °, and the best is to keep reclining when 270 ° of rotations.

As shown in Figure 3 and Figure 4, remain on the protector 10 in order to guarantee to make fiber in the whole rotary course of spool, being shaped as of protector 10 is non-circular.For the free end to a broken fiber 1 carries out optimization control, protector 10 preferably is made up of some arch portions.

Fig. 3 and 4 illustrates a preferred embodiment of protector 10.In this preferred embodiment, protector 10 is to be made up of seven arch portion A1-A7.Yet,, can adopt the arch portion of different numbers as long as make the inner surface of protector still keep smooth and do not have knuckle.

Each arch portion has different radius R 1-R7.Be the quantity maximization on the surface that makes the protector 10 that keeps fiber, these radiuses are by the spool center-biased.The position of bias point can be according to the size variation of spool and protector.

Fig. 6 and 7 illustrates the continuous smooth protector inner surface that is limited by arch portion A3 to A7, in conjunction with the centrifugal force of spool 2 rotations unclamping of fiber 1 is held to keep reclining the protector inner surface.In other words, by the rotation of spool 2 and the arch of combinative prevention device 10 fiber end is drawn along the surface of protector 10 with the bounced-back-role again of minimum.Therefore make fiber end keep reclining protector.Because the protector inner surface is not have the knuckle surface, so fibre end there is no the whipping effect, and fiber track is consistent with the protector inner surface.

Fig. 8 and 9 is illustrated in the back-page fiber track that fiber arrives protector population forward position protector 10, and decline 11 is basic straight line portioies of protector.It is provided for guiding fiber end into spool at fiber end before the protector inlet portion unclamps.Again the guiding of fiber track can make fiber draw from the protector surface with an angle.When spool 2 rotations, originally the free end of fiber 1 launches over to this spool, directly sends into towards the protector inlet surface that is formed by arch portion A1 then.This fiber track guarantees that the fibre end that unclamps will can also not bounce back on the fiber spool to protector hold-down arm 6 by whipping again.On the contrary, this fiber end that unclamps takes the track similar to Figure 4 and 5 to damage the fiber on the spool 2 to prevent whipping.

Obviously, those skilled in the art can not break away from the spirit and scope of the present invention foregoing invention is made various modifications and variations.Therefore, just mean modification of the present invention and modification and the equivalent thereof that present invention resides in the appended claims scope.

Claims

1. method that is used to reduce or prevent to damage the fiber that is just twining on a spool may further comprise the steps:

Fiber is wrapped on the spool of a rotation, this spool roughly has a non-circular protector of facing the smooth continuous inner surface of this spool by one and centers on;

One free end of fiber is abutted on the inlet surface of protector;

In the spool rotary course, make this fibre end keep abutting on the protector inner surface, thereby make the free end of this fiber and the fiber that is wrapped on the spool keep spacing distance.

2. the method that prevents to damage the fiber that just on a spool, is twining as claimed in claim 1, it is characterized in that, when described spool turns at least 90 °, keep abutting on the inner surface of described protector be involved in the inlet surface of spool at the free end of described fiber after.

3. the method that prevents to damage the fiber that just on a spool, is twining as claimed in claim 1, it is characterized in that, when described spool turns at least 180 °, be blocked at the free end of described fiber that the back keeps abutting on the inner surface of described protector on the inlet surface of spool.

4. the method that prevents to damage the fiber that just on a spool, is twining as claimed in claim 1, it is characterized in that, when described spool turns at least 270 °, be blocked back on the inlet surface of spool at the free end of described fiber and keep abutting on the inner surface with described protector.

5. the method that prevents to damage the fiber that just on a spool, is twining as claimed in claim 1, it is characterized in that, when described spool turns at least 270 ° but during less than 360 °, be blocked at the free end of described fiber that the back keeps abutting on the inner surface of described protector on the inlet surface of spool.

6. as claim 1,2,3, the 4 or 5 described methods that prevent to damage the fiber that just on a spool, is twining, it is characterized in that the inner surface of described protector comprises that one is suitable for guiding the track of the described free end of fiber the basic straight line end of described spool into.