CN1040193C

CN1040193C - Creel

Info

Publication number: CN1040193C
Application number: CN 94192498
Authority: CN
Inventors: 科林·菲利浦·史密夫
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-05-06
Filing date: 1994-05-05
Publication date: 1998-10-14
Anticipated expiration: 2014-05-05
Also published as: EP0697990B1; WO1994026646A1; CN1125429A; AU6682894A; GB9309305D0; EP0697990A1; DE69408449T2; DE69408449D1

Abstract

A yarn package holder on a creel, with a mechanism for rapidly stopping the yarn package holder once yarn is no longer being drawn. The mechanism has a pivoted member, one end of which carries a transverse braking control arm that overlies the yarn, and the other end of which is secured to an end of a tensioning cord wrapped at least once around a pulley on the yarn package holder. When yarn is being drawn, the braking control arm is lifted, which has the effect the loosening the cord around the pulley so that the braking effect is small. When yarn is no longer drawn, the braking control arm drops, which has the effect of tightening the cord around the pulley and rapidly stopping the yarn package holder.

Description

Bobbin bank

The invention relates to bobbin bank that rotation yarn package arranged.

Yarn on the bobbin bank is pulled out from the yarn package under tension force, and the yarn package is just to rotate after overcoming the power that is caused by arrowband or rope and belt wheel and tension force is raise.Tension force requires not high, but when by bobbin bank for the machine of yarn or when axle stops, yarn package meeting continues rotation a period of time and make yarn unwinding and cause yarn to relax and dangle continuously in during this period of time in bobbin bank.This will cause such as problems such as entanglement and the startup of machine is incured loss through delay.

CA-A-898225 discloses a kind of device, and it allows side by side the warp let-off tension force of the yarn of extracting out from the yarn package of bobbin bank is regulated.Each yarn package all has a let-off motion, comprises a cylinder and partly around the band of this cylinder, and the tensioning degree around the band of cylinder when opening a book is determined by yarn tension.Let-off motion can centralized control, also can control respectively.

FR-A-1445427 is disclosed to be a contacted band of a part of belt wheel with the carrying cable.The scheme of this invention is to adopt the polyethylene band of a stretching and the mechanism of an adjustment of tonicity (cable is revolted this tension force and is drawn out of).

DE-B-397129 discloses a kind of bobbin bank of controlling tension force when yarn is opened a book.Come tensioning or loosen a tension band (it is positioned on the cylinder that is connected in corresponding yarn package) by means of an adjustable tensioner arm, can realize this Tension Control.

The purpose of this invention is to provide a kind of bobbin bank that rotation yarn package is arranged, it can avoid yarn during in unwinding continuously in bobbin bank lax dangling and problem such as entanglement, thereby improve the production efficiency of machine.

According to the present invention, a bobbin bank that several rotary yarn package holders are arranged is provided, each yarn package holder has a belt wheel and a flexible thin component that contacts with this belt wheel, each yarn package holder has the tension force of a yarn that the yarn package from yarn package holder is pulled out to reduce to make the mechanism of response, it is characterized in that this flexible thin component at least on the belt wheel around a circle and the tension of this mechanism flexible thin component on the belt wheel, so that play snap catch.

In this explanation, term " braking " refers to when flexible thin component is tightened up it and acts on power high relatively in the yarn package yarn package holder is stopped.

The mechanism of each yarn package holder preferably comprises an element that pivots, and this element includes a brake control lever, and brake control lever vertically extends with the yarn that yarn package from the yarn holder is pulled out.Yarn and control of braking arm contact, under it, move.Flexible thin component is fixed on the element that pivots.When machine or when axle moves, the yarn of pulling out from the yarn package lifts the control of braking arm and operation below it, and yarn is by as the crow flies or do not have significantly and be not drawn out to skew.Flexible thin component is laxly on belt wheel in this case.When machine or when axle stops, yarn tension is eliminated and the control of braking arm is fallen, thereby the whole part that pivots is rotated.This just makes the flexible thin component tension on the belt wheel and yarn package holder is checked, thereby the yarn package is stopped.

The element that pivots has a horizontal pivot, a control of braking arm and a flexible thin component, and both are fixed on the both sides of pivot the back.

One end of flexible thin component is fixed on the element that pivots and the other end and bobbin bank connecting element fix.

The yarn of pulling out from the yarn package awards whole or main tension force by pivoting element, and this element is to be lifted by yarn, thereby yarn package holder is rotated.Yarn tension pivots element and also can add an adjustable counterweight, and/or link to each other (this will be explained below), so that can be regulated under normal operation with an adjustable spring.

Each yarn package holder can have an associated frame element.Frame element can have the pole that parallels with yarn package axle core basically and striden across by two adjustable lateral direction elements.Like this frame element just can determine yarn pull out the borderline region of process; The tram of lateral direction element has prevented that yarn from falling from the end of yarn package.The bar of frame element plays the effect that the yarn of operation is positioned and changes the yarn direction in addition.If want that this will be useful with vertical yarn pulling off device, this has been described in our No. 92/,000 90, PCT patent application PCT/GB, at this in conjunction with for referencial use.

Frame element can be a U-shaped element that is in above the yarn package, and its arm plays said bar effect and the arm end is connected with a connecting element.Pivoting element is to be connected with retaining element with pivot.One end of flexible thin component and retaining element or the U-shaped element fixes.Such retaining element can be loaded onto two U-shaped elements suitably and pivot element, on one side one, to be used for yarn package separately.

Preferably with the common device of controlling tension force and/or the package of bobbin bank yarn being braked.For this reason, pivot element and be subjected to an action of the spring, spring is connected on the post, and pillar then can be along vertically moving, thereby can carry out the adjustment of spring force to all springs that are connected on the post together.All posts are jointly controlled by an independent horizontal control element.This device has been made further instruction in our PCT patent application above-mentioned.Another kind of device is, spring is connected with adjustable substantially horizontal element, and these elements are jointly controlled by an independent vertical control element.

Flexible thin component is decided according to the character of flexible thin component and belt wheel around the number of turns on the belt wheel.Know from experience, when the flexible thin component tension will make the yarn package stop, at least will be around a circle on belt wheel.Flexible thin component preferably at least on belt wheel around 540 °.Flexible thin component can be the polymer strands of braiding, and belt wheel is the belt wheel of plastic mold injection.Select as another kind, flexible thin component can be a flat band or an elastomeric metal tape, and one deck frictional property material can be arranged on its contact surface.Belt wheel also can be a metallo-, for example gets with casting or spinning.

The present invention is existing to be described further with the method for giving an example with reference to appended figure, among these figure:

Fig. 1 is the schematic perspective view of first embodiment of the invention; With

Fig. 2 is the schematic schematic perspective view of second embodiment.

Each figure has represented a yarn package of bobbin bank, yarn volume be installed in a rotatable yarn package holder and it on related tension force/stop mechanism.Other rotary yarn package of bobbin bank does not show, but each all has tension force/stop mechanism it self, that be equal to mutually.

Fig. 1 represents rotary yarn package 2, and it is installed on the bobbin bank vertical support column 4 one on yarn package holder or ingot axle that horizontal axis rotates.In vertical plane surface, adapter plate 6 laterally is fixed on the vertical pillars 4.What column pivotally linked to each other therewith is an element that pivots 8, and what be fixed together with plate 6 is the element 10 of roughly U-shaped, and the U-shaped element is the pole form, extend package above, its arm parallels with the axle center of yarn package.

The element 8 that pivots comprises one from holding 13 to begin horizontal expansions and be fixed on to hold 13 circular rod type control of braking arm 12.Arm 12 is L shaped, it parallel with the axle center of yarn package with the part 14 that yarn 8 joins and also its length yarn package length of making peace greatly identical.Extend a decurved part 16 from part 14.

The other end of the element 8 that pivots also is the end that the another side of the pivot 18 that faces toward with arm 12 is fixed with a braided nylon rope 20, and the other end of rope 20 is fixed on the forearm of U-shaped framework 10.Between the two ends of rope on its belt wheel (not shown) at plastic mold injection around about 1.5 or more circle, belt wheel is fixed on the inner of yarn package.

One end of coil spring 22 is fixed on the part that pivots on the element end (with the end end vis-a-vis that is extended with control of braking arm 12).The other end of spring and post 24 fix, and can do up and down adjustment to adjust spring to pivoting the skew that element is produced.

Other spring that yarn package on the post identical with yarn package 2 connects mutually also is fixed on and pivots accordingly between element 8 and the post 24, and can do common adjustment.In addition, all posts in the bobbin bank can jointly be adjusted with an independent horizontal adjustment element.Done detailed description in the PCT patent application that such mechanism is mentioned on us.

Can be on the parallel arms of U-shaped framework 10 the steel wire lateral member 26 of two end buckles of crosswise fixed.The position of lateral member between arm is arbitrarily.It with arm determined yarn when the yarn package pulls out must process the zone.Just can be in whole coiling round-trip length yarn be limited with this method so that yarn can not fall from an end of yarn package during in unwinding.Lateral member can put very closely mutually or branch Kaiyuan City some, this will decide according to the geometric configuration of yarn package and the performance of institute's unwinding material.

The yarn of pulling out from the yarn package on the forearm of U-shaped framework 10 and control of braking arm 12 below by.It skims over from the postbrachium (not shown) of the U-shaped framework in front that is close to it then.

When normal unwinding operation, yarn overcomes main or is all pulled out from the yarn package by the tension force that pivots the appropriateness that element 8 produced.Act on yarn on the arm 12 and make arm overcome its weight and the power of spring 22 and be raised to the position of rising, yarn operation below it is general to keep straight or some skew slightly.So also just make to be in to pivot on the element end opposite with arm 12 and be positioned at extreme lower position, thereby rope is loosely on belt wheel, the tension force that is produced by its is very little or equal zero.

Should be noted that arm only is to rise slightly, so that " braking " is eased in this concrete device.Yarn tension can stop and makes arm enter into the power that its extreme lower position is gone then, and arm will further be risen, up between the downward power of yarn tension and arm mutually till the balance.When operation, because the power of antagonism will strive for keeping balance, so arm has a continuous upper and lower motion.When yarn moved, rope and did not produce big influence to unwinding tension loosely on belt wheel.

When machine stopped, the tension force of yarn disappeared immediately, and arm 12 is fallen the position shown in the figure.That is, an end that has arm 12 that pivots element falls, and the other end that pivots element lifts, and makes rope tightly on belt wheel.With regard to there being a strong braking force to act on the belt wheel, the yarn package is stopped immediately like this.

Concrete device shown in Figure 2 is similar with concrete device shown in Figure 1, and its key distinction is:

The end section that-arm 12 neither ones are curved down; But it has an end off-position spare 30

-pivot element 8 and comprise control of braking arm 12, bend to the L type by a pole and form;

-pivot element 8 pivot facing to having an adjustable counterweight 32 on the opposite side of arm 12;

-pivoting element 8 and also have the adjustable member 34 that is connected with rope, it can change so that braking force obtains change rope 20 and the point of connection that pivots element 8.

Can see that in Fig. 2 belt wheel 36 is the inside ends in the yarn package.

Shuo Ming invention herein also can with one vertical send with guiding device sharedly, we are as illustrated in the PCT patent application of being mentioned in front.The arm of U-shaped element also can support usefulness, and the yarn that moves is played the change of direction effect.For the yarn of a given yarn package, comparatively the way of Shi Heing is that the postbrachium that takes up the U-shaped framework that one of adjacent front and yarn package link turns to; The forefront yarn package that can be bobbin bank provides special support.

Claims

1. bobbin bank that several rotary yarn package holders are arranged, each yarn package holder has a belt wheel and a flexible thin component that contacts with this belt wheel, each yarn package holder has the tension force of a yarn that the yarn package from yarn package holder is pulled out to reduce to make the mechanism of response, it is characterized in that this flexible thin component at least on the belt wheel around a circle and the tension of this mechanism flexible thin component on the belt wheel, so that play snap catch.

2. according to the described bobbin bank of claim 1, the mechanism that it is characterized in that said each yarn volume holder comprises a control of braking arm, the horizontal expansion of the yarn that this arm is pulled out along the yarn package from yarn package holder, yarn operation and being in contact with it below the control of braking arm, the position of control of braking arm is controlled by yarn, and control of braking arm then the tension degree of the flexible thin component of control on the belt wheel.

3. according to the described bobbin bank of claim 2, it is characterized in that the control of braking arm has the pivoting on the element of pivot of approximate horizontal laterally to extend since one, flexible thin component is connected and pivots on the element, the control of braking arm be contained in a side of pivot and flexible thin component institute bonded assembly position at the opposite side of pivot.

4. according to the described bobbin bank of claim 2, it is characterized in that flexible thin component can pivot on the element along being fixed on this on the selecteed position that pivots element.

5. according to claim 3 or 4 described bobbin banks, it is characterized in that pivoting that element has adjustable counterweight and/or by a spring.

6. according to the described bobbin bank of claim 3, an end that it is characterized in that flexible thin component with pivot that element is connected and its other end is fixed on the connecting element of bobbin bank.

7. according to the described bobbin bank of claim 1, it is characterized in that each yarn package holder is linked in a frame element, frame element determine yarn pull out the zone of process.

8. according to the described bobbin bank of claim 7, it is characterized in that frame element has parallel pole, pole be parallel to the axis of yarn package holder and extend and by two lateral direction elements institute across, one in two lateral direction elements is adjustable so that the spacing between them can be adjusted at least.

9. according to the described bobbin bank of claim 8, it is characterized in that frame element be U-shaped and have a lateral direction element that can on frame element, adjust on two.

10. according to the described bobbin bank of claim 1, it is characterized in that providing the device that the tension force and/or the braking of all yarn packages on the bobbin bank are controlled jointly.

11., it is characterized in that flexible thin component walks around 540 ° at least on belt wheel according to the described bobbin bank of claim 1.