CN1912206A

CN1912206A - Guiding mechanism for lower leather ring of traction device

Info

Publication number: CN1912206A
Application number: CNA200610114829XA
Authority: CN
Inventors: P·布兰肯霍尔恩; G·施塔莱克
Original assignee: Maschinenfabrik Rieter AG
Current assignee: Maschinenfabrik Rieter AG; Wilhelm Stahlecker GmbH
Priority date: 2005-08-10
Filing date: 2006-08-10
Publication date: 2007-02-14
Also published as: DE102005039108A1

Abstract

A guiding mechanism for lower leather ring of traction device for guiding strand of fibres comprises a guide table of the lower leather ring, a steering roller for rotating the lower leather ring and a support frame of the steering. The support frame of the steering is equipped with an radial axis and a longitudinal axis. The steering roller is held in the guide table through this radial axis and longitudinal axis. The radial axis can include unit such as magnets for preventing the steering roller from falling.

Description

The guiding mechanism of the following apron on the drafting system

The present invention relates to the guiding mechanism of the following apron on a kind of drafting system that is used for the drawn fiber yarn, it comprises a following apron guide table, rotating apron down and turns to roller bearing and one to turn to roller bearing mechanism.

At the drafting system that is used for the drawn fiber yarn, the roller that a plurality of peripheral speeds drivings of arranging successively and can increase gradually are installed usually is right.Common here installation can be twined the guiding apron of top roller or bottom roll.These guiding aprons are by to the guiding of the fiber between the right jaw line of adjacent roller, improve the uniformity of the fiber strip after the drawing-off.These guiding aprons are normally by fixing guiding mechanisms, and for example top cradle or apron guide table down lead and turn to.Here, such fixed guide mechanism has such shortcoming, and promptly they produce a high relatively braking action to the guiding apron, and correspondingly, the roller of drafting system needs high driving power.

From a kind of as can be known guiding mechanism that starts the following apron of described type of German utility model 68 05 009, wherein this time apron is not that the limit that turns to by a fixing guide table turns to, and the substitute is by a rotating roller bearing that turns to.Here, this rotating roller bearing that turns to has such advantage, and promptly it turns to rail much smaller to the braking action of following apron than fixing.

Here, turning to roller bearing is to be placed on the supporting device travelling carriage, and this supporting device travelling carriage is to be fixed on the bearing with passing.This turns to the diameter of roller bearing bigger, this shown in supporting device on also be essential, can not occur turning to roller bearing not allow ground crooked thus, because the distance between the supporting device travelling carriage is bigger.Here, the major diameter that turns to roller bearing is disadvantageous, because fiber strip just is through with by the before very big segment distance of the right jaw line of next roller that is directed at that descends apron.Therefore, the fiber of fiber strip does not lead in a bigger segment distance.

In addition, the known supporting device that turns to roller bearing has such shortcoming, promptly after certain working time of process, except guide table, when necessarily changing apron forcibly, this turns to roller bearing must be threaded into the below of new following apron as other separate part.Therefore, such maintenance work is to link together with bigger expending.

Also can learn a kind of guiding mechanism that has the following apron that turns to roller bearing from Germany Patent document 26 33 75, this turns to the diameter of roller bearing smaller.But do not disclose any about the type that turns to roller bearing mechanism and the prompting of layout aspect.

Task of the present invention is, improves known mechanism and overcomes their shortcoming of mentioning.

This task is to be resolved by such mode, promptly turn to the supporting device of roller bearing comprise one radially with an axially mounting mechanism, and to turn to roller bearing be to remain in the guide table by this radial and axial supporting device.

Turning to roller bearing is that bearing by the radial and axial supporting device in guide table is kept by guide table fully.Therefore, can advantageously will turn to the diameter of roller bearing to choose very for a short time.By can descending apron to be directed to very and improve the guiding of fiber strip like this near the right jaw line of next roller.Because by the support of the radial support mechanism in the stable guide table, this turns to roller bearing can not be subjected to load again and bending, thereby has no longer needed to have so big diameter.

Another advantage is, by turning to roller bearing in guide table internal support mechanism, guide table constitutes the assembly of a compactness with turning to roller bearing, and this assembly can be used as an integral body and dismantles and install when maintenance work.This enforcement does not have a plurality of separate parts.In addition, advantageously, can choose the length that turns to roller bearing, make that its width with the following apron that will lead is roughly suitable.By like this, can for each down apron be provided with one oneself turn to roller bearing.

In a design of the present invention, carry out such design, promptly radial support mechanism comprises the device that prevents to turn to the roller bearing landing.Therefore the enforcement of the guide table and the assembly of the compactness that turns to roller bearing to form further simplified thus.Guarantee when the tensioning of descending apron is eliminated or weakens, to turn to roller bearing can not get off from landing in the radial support mechanism.In addition, advantageously, prevent to turn to the device of roller bearing landing contactlessly to play a role, particularly this device comprises at least one block of magnet.Therefore, turn to the easy turnability of roller bearing not to be affected.Simultaneously, when turning to roller bearing for example to dismantle, can dismantle simply for the purpose requirement of cleaning.

In another design of the present invention, advantageously, axially mounting mechanism comprises at least one spherical.By having the design of at least one axially mounting mechanism of spherical, sliding bearing mechanism is possible, and the wearing and tearing of this sliding bearing mechanism are especially little.Here, to be formed on the end face that turns to roller bearing or to be formed on the stop surface of the guide table that is used to turn to roller bearing be unessential to spherical face.

In another design of the present invention, advantageously: the material of guide table is made up of a kind of material that is easy to slide in the zone of the radial support mechanism that turns to roller bearing that implements as sliding bearing mechanism at least or is coated with the coating that one deck is easy to slide.Particularly advantageously be that this can realize by the material that use contains polytetrafluoroethylene (PTFE).

Draw other advantages of the present invention and feature from following description to embodiment.

Fig. 1 demonstration has the side view of the part section of the part of a drafting system of apron guiding mechanism down;

Fig. 2 demonstration is seen down the view that the apron guiding mechanism obtains along the direction of the arrow II of Fig. 1, has wherein left out a plurality of assemblies on every side of drafting system.

Only the drafting system of part expression is used for drawn fiber yarn 1 in Fig. 1.For this reason, a plurality of rollers are to 2,3 along throughput direction A conveying fibre rod or thick line 4, and to 2,3 it are drawing to the fineness of hope by the roller that drives with the peripheral speed that increases.The fiber strip 5 of finishing drawing-off is drawn out of along extracting direction B out, can for example spin by the ring ingot and twist and further be processed into yarn.Kind on the fiber strip 1 of wanting drawing-off is decided, advantageously shown in roller also to be furnished with other roller before or after to 2,3 right.

Roller

2,3 comprises

drivable bottom roll

6,8, and in order to improve the drawing-off of fiber strip 1, these bottom rolls can be furnished with groove (Kannelur) on their periphery.Each

top roller

7,9 can flexibly be pressed on the

bottom roll

6,8, and forms

jaw lines

10,11 with separately bottom roll 6,8.By the bottom roll 8 that drives with higher peripheral speed, fiber strip 1 is drawing to very little fineness between two

jaw lines

10 and 11.

For between

jaw line

10 and 11, the fiber strip 1 of wanting drawing-off being led, distribute guiding

apron

12,13 to 2 to roller.Here, this time apron 12 twines bottom roll 6 and is led and tensioning by following apron 12 guiding mechanisms 14.In modification to the embodiment that described, also can design like this, promptly descend apron obviously longer and be tensioned by an independent strainer.Upper leather ring 13 twines top rollers 7 and leads by a upper leather ring guiding mechanism that does not draw in a manner known way, for example with the form of top cradle.

The guiding mechanism 14 of following apron 12 comprises a guide table 15, and this guide table is fixed on the fixing framework in a not shown manner or is fixed on the bearing of drafting system.Be provided with the rotating roller bearing 16 that turns to of a following apron 12 on to a side of 3 towards roller in guide table 15.Compare with bottom roll 8, this turns to the diameter of roller bearing 16 as far as possible little, therefore can abut jaw line 11 as far as possible with descending apron 12 to be directed to.By the guiding of being grown as far as possible by 12,13 pairs of fiber strips 1 of guiding apron between

jaw line

10 and 11, the uniformity of finishing the fiber strip 5 of drawing-off improves.For at jaw line 10 with turn between the roller bearing 16 apron 12 under the supporting device, guide table 15 can change in a manner known way towards the design of the one side of apron down.Kind on the fiber strip 1 of wanting drawing-off is decided, guide table 15 structures that have littler or bigger contact area and have the differing heights step, and verified is reliable.

Turning to roller bearing 16 is to be bearing in fully in the guide table 15, and with the assembly of a compactness of its formation, this assembly can be disassembled or install simply for the purpose of keeping in repair or cleaning., turn to the supporting device of roller bearing 16 to comprise a radial support mechanism 17 here, this radial support mechanism is the form of bearing shell, surrounds a part that turns to roller bearing 16 circumference.Radial support mechanism 17 makes to turn to roller bearing 16 to remain on its position and support this under the effect of the tensile force of following apron 12 and turns to roller bearing 16.Because this turns to the diameter of roller bearing 16 very little, when radial support mechanism 17 when this turns to roller bearing in its whole length upper support as far as possible, this is favourable.

Turn to roller bearing 16 to drive and place rotation status by the following apron 12 that rotates.Therefore, advantageously, it is to form or be coated with slidably coating of one deck by a kind of material that is easy to slide that 17 contacts of radial support mechanism turn to the zone of roller bearing 16.Particularly advantageous at this is such material, and it comprises the material that is beneficial to slip, for example is made up of polytetrafluoroethylene (PTFE).

Stop the landing that turns to roller bearing 16 when weakening, be provided with the device 18 that prevents to turn to roller bearing 16 landings for tensile force at apron 12.This prevents to turn to the device 18 of roller bearing 16 landings contactlessly to act on to turn on the roller bearing 16 and comprises a magnet 19.As shown in Figure 2 advantageously, in guide table 15, arrange a plurality of magnet 19 that distribute on the length of roller bearing 16 that turning to.

The supporting device that turns to roller bearing 16 that is included in the guide table 15 also comprises an axially mounting mechanism 20 as shown in Figure 2 in addition, turns to roller bearing 16 to locate in the axial direction by this axially mounting mechanism.Preferably, this axially mounting mechanism 20 is preferably formed by one spherical 21 and flat opposite faces 22.In the example shown, this spherical 21 is arranged on the end face that turns to roller bearing 16, and opposite face 22 is preferably formed by guide table 15.But, conversely also can be equally good.In axially mounting mechanism, use to have such advantage for spherical 21, make wearing and tearing minimum there.

For a large amount of fiber strip 1 of while drawing-off, roller 6,8th, at the vertical upwardly extending cylinder down of machine, this point is well-known.At this, apron 12 is arranged along bottom roll 6 successively with certain interval under several.Under these circumstances advantageously, top roller 9 is so-called twin pressure rollers.In these pairs roll-in, two top rollers 9 are arranged on the same fixed axis respectively rotationally, and are crushed on together on the bottom roll 6.Here, guide table 15 can be designed to so long, and it is extended on many following aprons 12.Advantageously, choose the length that turns to roller bearing 16 then, make its length roughly suitable with the width of following apron 12.Therefore, can construct guide table 15, make that the frame support can be at those top roller 7 supporting devices that formed by twin pressure roller in a manner known way in two fronts 23 that turn between the roller bearing 16.Like this, can be advantageously be used in combination by the guiding mechanism 14 of down apron 12 of the present invention with the part of commercial general upper leather ring 13.

Claims

1. be used for following apron (12) guiding mechanism (14) on the drafting system of drawn fiber yarn (1), it comprises the rotating supporting device that turns to roller bearing (16) and turn to roller bearing (16) of apron (12) guide table (15), following apron (12) down, it is characterized in that, the described supporting device of roller bearing (16) that turns to comprises radial support mechanism (17) and axially mounting mechanism (20), and the described roller bearing (16) that turns to remains in the guide table (15) by this radial and axial supporting device (17,20).

2. the guiding mechanism of apron down according to claim 1 is characterized in that described radial support mechanism (17) comprises the device (18) that prevents to turn to roller bearing (16) landing.

3. the guiding mechanism of down apron according to claim 2 is characterized in that, describedly prevents to turn to the device (18) of roller bearing (16) landing to comprise at least one block of magnet (19).

4. according to each described guiding mechanism of apron down in the claim 1 to 3, it is characterized in that described axially mounting mechanism (20) comprises at least one spherical (21).