CN101952494A

CN101952494A - Apron guide device for a drawing system top roller

Info

Publication number: CN101952494A
Application number: CN2008801269766A
Authority: CN
Inventors: N·布伦克; W·莱纳; M·史密斯
Original assignee: Maschinenfabrik Rieter AG
Current assignee: Maschinenfabrik Rieter AG
Priority date: 2008-02-18
Filing date: 2008-09-18
Publication date: 2011-01-19
Also published as: TR201006816T1; DE102008010364A1; WO2009103318A1; EP2304085A1; EP2304085B1; BRPI0822295A2

Abstract

The invention relates to an apron guide device (14) for a drawing system top roller (6). The apron guide device is used to guide an apron (13), which wraps around the drawing system top roller with the elastic coating (12) thereof. The apron guide device comprises a holder for the drawing system top roller and guide surfaces for the apron. The apron guide device has a base body (20) and a guide component (21) fastened to the base body. The base body comprises the holder for the axis of the drawing system top roller, and the guide component comprises at least one guide surface (17, 22) for the apron. Two guide components that can be fastened to the base body and are intended for adjoining drawing system top rollers of twin upper rollers may be provided, which can be fastened to the base body at different distances to each other.

Description

The apron guider that is used for the drafter top roller

The present invention relates to a kind of apron guider that is used for the apron guiding of twining the drafter top roller with elasticity covering, the apron guider comprises and is used for holding body and being used for the spigot surface of apron of drafter top roller.

This apron guider is known by DE10348452A1.Known apron guider is constructed in single parts mode, and wherein apron only bears such tension basically, and this tension is attempted to form in a circumferential direction under the sub-circular shape at them and caused.Because the structure of the single part of apron guider, the apron guider especially is implemented as under the plastics die casting situation at it, is merely able to be made by a kind of only material.The selection of material requires to adopt half measure, because on the different parts of apron guider material is had different requirements.

Task of the present invention is to improve the apron guider.

This task is so solved, and promptly the apron guider has a matrix and a guiding parts that is fixed on the matrix, matrix comprise be used for the drafter top roller hold body and guiding parts comprises that at least one is used for the spigot surface of apron.

The structure of two parts formula of apron guider makes two important function that should be reached by the apron guider separately, promptly to the guiding of apron with the apron guider is fixed on the axle of drafter top roller.The fixing of apron guider and the function that keeps are born by matrix, and this matrix comprises the body that holds of the axle that is used for the drafter top roller.Matrix for example can be made of the plastics that glass fibre or carbon fiber are strengthened.This plastics guarantee that matrix has high stability and prevent that externally load force was descended earth deformation.The defective that this stable plastics have is that they are uncomfortable as sliding pair, because they have bigger coefficient of friction and because occurring wear causes outstanding from the teeth outwards glass fibre or carbon fiber under the sliding friction situation.These outstanding fibers cause the wearing and tearing on the sliding pair to increase.Therefore, in according to apron guider of the present invention, the spigot surface that is used for apron is arranged in a guiding parts that separates with matrix.Guiding parts can be fixed on the matrix and can construct in this wise, makes it only bear very little operation active force.Therefore, can use a kind of plastics of sliding of being easy to especially in an advantageous manner for guiding parts, it needn't contain the part of strengthening by glass fibre or carbon fiber.Be applicable to that especially a kind of at least a portion of the plastics that are easy to slide is the plastics that are made of polytetrafluoroethylene (PTFE) (Polytetrafluorethylen).Can reduce the wearing and tearing of apron and the life-span of improving apron thus.Can make abrasion loss be reduced to minimum level in addition, this abrasion loss requires to increase the driving torque of drafter bottom roll.Wearing and tearing optimize on the present guiding parts, it where necessary can be easily and cost advantageously change.

But, in alternative embodiment, also can make guiding parts as for example pottery or steel with high-abrasive material, steel polish on the spigot surface of apron being used for.

Drafter top roller at the drafter that is used for the drawn fiber yarn usually is configured to two top rollers.Two top rollers comprise two drafter top rollers that respectively have a flexible covering, and they can be arranged on the fixing axle freely to rotate.Axle zone is in the middle upward admitted by a loading support of drafter.Alternatively, two top rollers also can be configured to so-called fixedly roller, and wherein two drafter top rollers are connected with axle by anti-rotation ground, wherein are provided with sleeve in order to support this axle, and this sleeve surrounds spool also being installed in subsequently on the loading support of fixing roller.If two top rollers are configured to fixedly roller, nature will design the body that holds of apron guider matrix in this wise so, makes to hold on the sleeve that body can be positioned in the axle that surrounds the drafter top roller.

At the apron guider that is used for two top rollers, advantageously, the apron guider comprises two guiding partss that are used for adjacent drafter top roller that are fixed on the matrix.Preferably these two guiding partss can be fixed on the matrix with mutual different spacing, wherein guiding parts can with the axially parallel of drafter top roller move and wherein can be provided for the detent mechanism of guiding parts, this detent mechanism allows guiding parts only is fixed on the matrix with predetermined spacing.The advantage that this structure has is, can use the apron guider of the two top rollers that are used to have different pitches, that is two drafter top rollers has mutually two top rollers at a distance of the elasticity covering of different distance.For two top rollers of different pitches, only need an only matrix.By guiding parts being fixed on the corresponding position on the matrix, realize thus being used for apron spigot surface with the corresponding position of this pitch.Two guiding partss with the spigot surface that is used for apron are preferably constructed this moment in the same manner, make each can be used to lead on two aprons of two top rollers.Reduced the diversity of parts thus widely.

Because the pitch of two top rollers only has certain value that limits in advance, for example 70,75 or 82.5mm, therefore advantageously be provided for the detent mechanism of guiding parts, their allow only under the predetermined spacing of various pitches guiding parts to be positioned on the matrix.Apron guider and different pitch are complementary thus can be implemented under the big adjustment expense not having.

As also in the known apron guider of DE10348452A1, preferably only produce apron tension force in this wise, promptly try hard to make apron to present the near round shape shape in a circumferential direction.But alternatively, for the apron guiding that realizes improving, also can be advantageously, the apron guider comprises one and is subjected to spring-loaded tension element.Tension element not only can be arranged in also can be arranged on the guiding parts on the matrix and for example can pass through additional plastic bottle and form at this moment.Can stipulate that also tension element is formed by the spring-loaded spigot surface that is subjected to of guiding parts.For example running face can be individually or whole director element loaded by elasticity with running face.

In additional embodiments of the present invention, the apron guider can comprise with scraping of arranging obliquely of apron traffic direction and takes off seamed edge.Scrape and take off seamed edge and be used to dispose the fiber that may adhere on the apron.Scrape and take off seamed edge and can design in this wise, make it contact apron lightly or be arranged in non-contiguously with apron at a distance of a minimum spacing place.

Other advantage of the present invention and feature are by drawing in the following description to embodiment.

Shown in the accompanying drawing:

Fig. 1 is the front view according to two top rollers of apron guider of the present invention,

Fig. 2 is the side view along the cross section II-Il intercepting of Fig. 1.

In Fig. 1 and 2, schematically illustrated the drafter 1 that is used for drawn fiber yarn 2.As can seeing among Fig. 2, drafter 1 is made up of 3,4 and 5,6 a plurality of rollers, their conveying fiber yarns 2 and at this moment it is drawing to the fineness of expectation on throughput direction A.Bottom roll 3 and 5 is by transmission.Top roller 4 and 6 is maintained in the loading support 7 and is pressed on bottom roll 3 and 5.Roller disposes guiding

apron

8 and 9 to 3,4 in known mode itself, and it is used at roller 3,4 jaw line 10 and roller being guided fiber strip in to the draw zone between 5,6 the jaw line 11.Top roller 6 is furnished with the flexible covering of being made by the rubber type material 12.In order to protect flexible covering 12 can not be subjected to the strong wearing and tearing of fiber strip more than 2, top roller 6 is furnished with the apron 13 that is twining flexible covering 12.For to apron 13 guiding, be provided with apron guider 14.

Apron guider 14 comprises holding body 15 and being used for the running face 17 of apron 13 of the axle 16 that is used for drafter top roller 6.Preferably apron guider 14 is arranged on the output top roller 6 of drafter 1, makes apron 13 form jaw line 11, on this jaw line, stop drawing-off fiber strip 2.On output jaw line 11, the wearing and tearing of top roller 6 are strong especially, because the peripheral speed of roller 5,6 is maximum.

Usually a plurality of drafters 1 being provided with abreast, is exactly this situation as the drafter 1 that for example is used for ring spinner.In the case, bottom roll 3 and 5 is configured to the fluted roll of operation on machine is vertical, as seeing in Fig. 1.Two drafter top rollers 6 of adjacent drafter 1 can be arranged on the public axle 16 freely to rotate.Axle 16 is fixedly mounted on the retainer 18, and this retainer is fixed on to load on the support 17 and by this retainer drafter top roller 6 is pressed on the bottom roll 5.Two top rollers 6 form so-called pair of top roller with axle 16.The flexible covering 12 of two top rollers 6 of two top rollers 19 is twined by an apron 13 respectively.Surround retainer 18 with holding body 15 fork-shapeds and be clamped in the axle 16 on.

According to the present invention's regulation, apron guider 14 is configured to two parts and comprises a matrix 20 and a guiding parts 21 that is used for each apron 13.Matrix comprise the axle 16 that is used for two top rollers 19 hold body 15 and by stable material manufacturing, the load force that occurs when it can be absorbed in operation.The plastics that matrix 20 is preferably strengthened by a kind of fiber are made.Guiding parts 21 comprises running face 17 and two side guide waies 22, and whole three parts are called as the spigot surface of apron 13 together.Guiding parts is made by a kind of plastics that are easy to slide, thereby apron 13 only is subjected to very little resistance on spigot surface 17 and 22.Each guiding parts 21 is fixed on the matrix 20 by holding body 23 and 24.Guiding parts 21 can move on matrix 20 with the axially parallel ground of drafter top roller 6.At the detent mechanism 25 that is provided with pin 26 forms on the guiding parts 21 and on matrix 20, be provided with a plurality of grooves 27, be used to guarantee that two guiding partss 21 are locating on the predetermined spacing each other.

Use two top rollers 19 of different pitch B in practice.Pitch B is corresponding to the spacing of fiber strip drafted in adjacent drafter 12.The covering 12 of two top rollers 19 also has the spacing corresponding to this pitch.The side guide way 22 of apron guider 14 must be coordinated mutually with this pitch of two top rollers 19, so that just in time operation on covering 12 of apron 13.Controllability by guiding parts 21 with can will be applied on two top rollers 19 of different pitch B by detent mechanism 25 according to apron guider 14 of the present invention, and do not need big adjustment expense.The number of the groove 27 in matrix 20 is coordinated mutually with the pitch B of position with the two top rollers 19 that use in practice.

By guiding parts 21 drafter top roller 6 axially on mobility, also can simplify the replacing of each single apron 13.Guiding parts 21 can with apron 13 top roller 6 axially on from matrix 20, release downwards.Apron does not need upwards to pull out through side guide way 22.Higher side guide way 22 can be set thus, when covering 12 must carry out grinding again and its diameter reduces thus, still guarantee good guidance like this apron 13.The side guide way 22 that increases also guarantees to reduce reliably apron to be led under the situation at the diameter of drafter top roller 6, and needn't be provided with additional tension element.

But, in the embodiment that does not illustrate, for certain applicable cases, additional tension element is set and for example be arranged in drafter top roller 6 and guiding parts 21 between, may be favourable really.Also can be advantageously, with guiding parts 21 by spring be fixed on matrix 20, thereby with bigger a little power tensioning apron 13.

In order to prevent to form fiber accumulations on apron 13 medial surfaces, it has increased the difficulty of the motion of apron 13, as selection scheme, can be advantageously, and be provided with one and be used to clean scraping of apron 13 and take off seamed edge 28.Scrape and take off seamed edge 28 and be arranged in obliquely on apron 13 medial surfaces with respect to apron traffic direction C.Scrape and take off seamed edge 28 and preferably very gently contact apron 13 this moment.Take off seamed edge and be obliquely installed by scraping, may stick to that dirty on the apron 13 scraped and output from the side comes with respect to apron traffic direction C.

The apron 13 that twines the elasticity covering 12 of drafter top roller 6 can be designed to different structures.A layer of being made by the material of rubber type can be constructed and have at least on its outer surface to apron 13 for example as guiding apron 8.But apron 13 also can alternatively be configured to so-called screen cloth apron, and its fabric by ventilation is made.This screen cloth apron is applied to be arranged on drafter 1 compression set that is used for compressing drafted intact fiber strip afterwards usually.The girth of apron 13 preferably pulls sample length according to the fiber of the fiber that exists and selects and should be preferably greater than fiber and pull sample length in fiber strip 2.Apron 13 girths of Ce Dinging prevent to form undesirable coiling effectively on apron 13 like this, even the diameter of drafter top roller 6 is selected lessly.

Can see that in Fig. 2 a mid point and the mid point of running face 17 straight line of pulling out by axle 16 has about 90 ° angle with respect to plane, drawing-off field.This only is an exemplary organization plan.Can stipulate that in the organization plan that does not illustrate apron guider 14 has different orientations with respect to plane, drawing-off field.Drafter 1 is arranged in the ring spinner usually in this wise, makes plane, drawing-off field flatly not extend.Plane, drawing-off field for example can be at 45 with ground angle.Can be advantageously, the angle between the straight line that the mid point of plane, drawing-off field and mid point by axle 16 and running face 17 is pulled out approximates the angle between plane, drawing-off field and ground greatly.Apron guider 14 approximately is positioned on the horizontal direction thus.Angle between the straight line that the mid point of plane, drawing-off field and mid point by axle 16 and running face 17 is pulled out can be preferably about 45 °.

Claims

1. apron guider, it is used for twining apron (13) guiding of drafter top roller (6), this drafter top roller rubber-like covering (12), wherein the apron guider comprises and is used for holding body (15) and being used for the spigot surface of apron (13) of drafter top roller (6), it is characterized in that, apron guider (14) has a matrix (20) and is fixed on guiding parts (21) on the matrix (20), wherein matrix (20) comprise described be used for drafter top roller (6) hold body (15), and wherein guiding parts (21) comprises that at least one is used for the spigot surface of apron (13) (17,22).

2. according to the described apron guider of claim 1, it is characterized in that apron guider (14) comprises two guiding partss (21) that are fixed on the matrix (20), it is used for the adjacent drafter top roller (6) of two top rollers (19).

3. according to the described apron guider of claim 2, it is characterized in that two guiding partss (21) can be fixed on the matrix (20) with mutual different spacing.

4. according to the described apron guider of claim 3, it is characterized in that, apron guider (14) comprises the detent mechanism (25) that is used for guiding parts (21), and this detent mechanism allows guiding parts (21) only to be positioned under predetermined spacing on the matrix (20).

5. according to the described apron guider of one of claim 1 to 4, it is characterized in that, guiding parts (21) can with the axially parallel of drafter top roller (6) move.

6. according to the described apron guider of one of claim 1 to 5, it is characterized in that apron guider (14) comprises flexible tension element.

7. according to the described apron guider of one of claim 1 to 6, it is characterized in that apron guider (14) comprises with respect to scraping of being in tilted layout of apron traffic direction (C) and takes off seamed edge (28).