CN1650054A

CN1650054A - Cleaning roll holders for drafting units in spinning machines

Info

Publication number: CN1650054A
Application number: CNA038100614A
Authority: CN
Inventors: 克劳斯·佩普
Original assignee: TEXparts GmbH
Current assignee: TEXparts GmbH
Priority date: 2002-07-10
Filing date: 2003-06-27
Publication date: 2005-08-03
Also published as: JP2005532486A; EP1521876A1; DE10231102A1; US20060150374A1; WO2004007821A1

Abstract

A drafting device for a spinning unit has at least one upper roller-carrying weighting arm which is held by a frame and has a clearer roller which can rotate about an axis and can be displaced transversely with respect to its axis of rotation in a guide device of a bearing element. The scrub rollers are placed on the upper roller support weighted arms such that they are located on the respective assigned upper rollers. At least one end of the shaft of the cleaning roller (1, 4, 5) formed in the form of a bearing hollow pin is formed with a retaining device which engages behind the connecting rod guide of the bearing element (6). In the upper roll-bearing weighting arm, the clearer (4, 5) overlapping one track and the clearer (1) overlapping two tracks can be alternately suspended in the same bearing element without the need for a modification of the bearing element (6). The embodiments of the cleaning roller (1, 4, 5) and the bearing element (6) according to the invention allow a simple, easy and quick mounting and dismounting of the cleaning roller (1, 4, 5).

Description

The clearer holding device that drafting system in the spinning unit is used

Technical field

The present invention relates to the drafting system that a kind of spinning unit according to claim 1 is used.

Background technology

The fibrous material that spins is imported into the spinning unit with the rove form usually, and rove is drafted before the spinning unit.Use drafting system for this reason.The spinning operating period unwanted useless fiber can be wrapped in drafting system roller or the tube on.If thisly break away from roller again and fall in the rove guide rail that into is also referred to as track attached to the fibrous material on the roller, then rove can obtain unwanted tieing or slubbing.This can cause the yarn defect that can not allow.Be well known that, use clearer that useless fiber is removed from the drafting system roller again.Clearer drives by friction because of the working roll of drafting system and has a clean layer.This clean layer is by interrupted or cleaning continuously.

CH 402 690 of the same type has described a kind of drafting device for spinning machine with the top roll supporting weighting arm that can swing placement, and this drafting system contains adjustable holding device that top roll is used.The arciform clearer holding device superimposition top roll supporting weighting arm of the guiding device that tilts with respect to the draw zone plane with axle usefulness of clearer.The clearer that top roll is used is positioned at its deadweight on the top roll that will clean of subordinate and from top roll and takes off fiber roll or equivalent.

Clearer is loaded in the adjacent guiding device of clearer holding device between two top roll supporting weighting arm, and each two tracks of superimposition.For the clearer of such placement, the top roll of two external orbital of weaving loom can not be provided with clearer.Therefore, by first and last spinning unit transfixion on the spinning machine of being everlasting of two outside drafting system track feedings.It is to bear the production loss that yet this processing mode has a remarkable shortcoming.And be unsuitable for cleaning the top roll of external orbital according to CH 402 690 described devices.

Allow that the device that the clearer that track is used only remains on the top roll supporting weighting arm is known.Use this device, can clean first and the top roll of last track, and can avoid the production loss mentioned.

EP 0 344 944 A1 have described a kind of drafting system, and in this drafting system, top roll supporting weighting arm has the clearer in each side arranged opposite, and this clearer is track of superimposition only separately.Clearer has the form of the frustum of a cone.Use the clearer of this form, will receive the useless fiber from ribbon, break away from and it is transported to the waste disposal position continuously.Owing to the superficial velocity that this conical form produces between clearer and the top roll is poor, this superficial velocity difference will produce better cleaning effect.The fiber that is received by clearer is applied in a component in the case, and this component makes fiber move to the clearer of minor diameter more.These embodiment have shortcoming separately according to performance.In one implemented, clearer can not be connected by rivet with holding device with unclamping, perhaps connects back-off assembly with alternative by screw.The top roll of the pneumatic loading of stretching in top roll supporting weighting arm for the elastic hose body, the top axle that is fixed with two clearers separately that stretches by top roll supporting weighting arm has obstruction.Therefore the holding device of different structure is fixed on the top roll supporting weighting arm.This is handled when this clearer of installation and removal, and is that to compare simply packing into of feasible clearer be the comparison costliness when the enforcement of CH 402 690.

DE 195 21 265 A1 have provided a kind of drafting system of used in spinning machine, and in this drafting system, clearer is placed on the Swing Arm, and this Swing Arm side direction is configured on the top roll supporting weighting arm.The structure of this holding device is the comparison costliness.Use is packed between two top rolls supporting weighting arm and the clearer of two tracks of superimposition, for being infeasible according to the described device of DE 195 21 265 A1.This is a shortcoming with following comparing, and uses the roller of two tracks of superimposition that is:, when the clearer on a large amount of drafting systems of spinning machine cleans, needs installation and removal expense seldom.

Summary of the invention

The improved holding device that provides the spin-cleaning roller on a kind of drafting system of spinning machine to use is provided from above-mentioned prior art.

This purpose is to use the drafting system of the feature with claim 1 to reach.

Favourable layout of the present invention is the object of dependent claims.

Use has proposed a kind of holding device according to embodiments of the invention, and this holding device is allowed simple and installation and removal fast.The number of elements of making and will installing reduces.Holding device according to the present invention adopts simple version, not only can be widely used in the clearer of two tracks of superimposition of placing between two top roll supporting weighting arm, and be widely used in the clearer that each track is used.

The holding device that forms the collar can be made simple especially and at low cost.

A kind of connecting rod guiding device, its both sides at bearing element have a spring element respectively, can apply a power to the axle of clearer by the connecting rod guiding device, this power makes clearer tightly suppress top roll, and this connecting rod guiding device guarantees that clearer always contacts with top roll and thereby generation better cleaning effect.Simultaneously, eliminated the gap between the axle of connecting rod guiding device and clearer, and realized that the direction of clearer is stable.

The conduction between clearer and frame according to claim 4 connects, and has avoided the electrostatic charging of clearer.This electrostatic charging can cause functional fault and yarn defect.

Description of drawings

Fig. 1 is the fragmentary, perspective view that the top roll of drafting system supports the simplification of weighting arm.

Fig. 2 is the structure perspective view of a clearer using of clearer using of a track in the bearing element and two tracks.

Fig. 3 is the structure perspective view of two clearers using of each track on the bearing element.

Fig. 4 is the fragmentary, perspective view of simplification of top roll supporting weighting arm that has the drafting system of two clearers that a track uses separately.

The specific embodiment

According to the embodiment shown in the figure the present invention is described in more detail.

Fig. 1 illustration the part of drafting system, this drafting system has: two clearers 1, it is packed between two top rolls supporting weighting arm 2,3 separately and is positioned on per two top rolls of a pair of drawing roller of front; And two other clearers 4,5, it is externally on the top roll of the other a pair of drawing roller that is positioned at outside front of the side of top roll supporting weighting arm 2.The top roll acting in conjunction of clearer 1 and per two tracks, and clearer 4,5 only with the acting in conjunction when the spinning operation of the top roll of each track.Whole paired drafting system rollers and layout thereof illustrate for simplifying reason.Top roll supporting weighting arm 2,3 has bearing element 6, and clearer 1,4,5 is configured in the side direction of this bearing element 6 respectively.The bearing element that other clearers are used and with the coefficient clearer of back top roll, for the purpose of more clear, do not illustrate.Top roll supporting weighting arm 2,3 can be in due form from illustrated down position, and promptly operating position swings to the upper end position.

The arrangement details of clearer 1,5 can be learnt from Fig. 2.Top roll supporting weighting arm 2 and bearing element 6 is fixed on top roll supports that used retaining element illustrates at this on the weighting arm 2 is so that can intuitively illustrate layout.

Bearing element 6 is symmetrically formed and comprises induction element 7,13 in each side, and this induction element forms the connecting rod guiding device.Each induction element 7,13 has spring element 8,14.Be incorporated with a end with the axle of the clearer 5 of bearing hollow pins 9 forms in the outside (shown in the left side of Fig. 2) of top roll supporting weighting arm 2.Clearer 5 breaks away from bearing hollow pins 9, so that can observe layout in the clear.Under the push situation of clearer 5 on the bearing hollow pins 9, can releasably be fixed on clearer 5 on the bearing hollow pins 9 by a retaining thread joint 11.Retaining thread joint 11 with do not do illustrated groove acting in conjunction herein, for example in DE 195 21 265 A1, done to be described in more detail.Clearer 5 is provided with clean layer 10.The end of bearing hollow pins 9 in it packs bearing element 6 into has the collar 12, this collar 12 is engaged on the back of the connecting rod guiding device that is formed by induction element 7, its effect is to make clearer 5 when single-sided arrangement, is kept by bearing element 6 in drafting system operating period.Spring element 8 is so crooked, so that bearing hollow pins 9 is applied in a power, the power that this power causes with the deadweight by clearer 5 makes clearer 5 tightly suppress the top roll of institute's assignment.When clearer 5 was upwards taken out from bearing element 6, spring element 8 was pressed to sidepiece from bearing hollow pins 9, and clearer 5 discharges thus.And when inserting clearer 5, the resistance that is caused by spring element 8 also is overcome easily.Therefore, can carry out the installation and removal simply, easily and fast of clearer 5.Clearer 4 is the same with clearer 5, adopts same way as to form and maintenance.Induction element 13 with spring element 14 is mutually mirror image with induction element 7 and forms.In induction element 13, be inserted with the bearing hollow pins 15 of clearer 1.At the opposite end of clearer 1, this clearer with bearing hollow pins is inserted into not doing in the illustrated bearing element 6 of top roll supporting weighting arm 3 in Fig. 2, and this can learn from Fig. 1.Clearer 1 is the same with clearer 5, conducts oneself with dignity by it and places.As during single roller and the top roll acting in conjunction only, clearer 1 is cleaned two top rolls with its clean layer 16 at every turn at clearer 5.The thrust that applies because of deadweight on top roll is strengthened by component, and this component is applied on the bearing hollow pins 15 by spring element 14.Corresponding component is applied by the sightless spring element in Fig. 2 of bearing element 6 fixing on the top roll supporting weighting arm 3.

For in the layout shown in Fig. 3, to compare with Fig. 2, the bearing hollow pins 15 of clearer 1 is substituted by bearing hollow pins 17.Learn from Fig. 4, replace clearer 1, the clearer 18 of an only one-sided placement as clearer 5 is packed in the guidance unit 13.The end of the bearing hollow pins 17 of clearer 18 with the same in the end of bearing hollow pins 9, is formed with the collar 19.The collar 19 is engaged on the back of the connecting rod guiding device with induction element 13, and as the bearing hollow pins 9 of clearer 5, plays the effect that safety keeps when single-sided arrangement clearer 18.For making layout more directly perceived, not shown clearer 5,18 in Fig. 3.

The clearer 1 that bilateral is placed in the configuration of Fig. 1 is substituted by the clearer 18 of two one-sided placements respectively in the configuration of Fig. 4.For the installation and removal that can carry out simply, easily and fast, do not need to replace or change bearing element 6 or induction element 7,14.Therefore bearing element 6 is general available.In the configuration of Fig. 4, top roll supporting weighting arm 2,3 can rise or descend independently of each other, and need not take out clearer from arrange.

The invention is not restricted to described embodiment.In another alternate embodiment, the clearer 1 of two tracks of superimposition can comprise the embodiment of the bearing hollow pins 9,17 with collar 12,19, replaces the embodiment of bearing hollow pins 15.Therefore, the quantity of different parts can further reduce.The bearing element that the clearer of back top roll is used keeps roughly existing U shape version, and for example can regulate on the longitudinal direction of top roll supporting weighting arm 2,3 by slotted hole in normal way.

Claims

1. drafting system that the unit that spins is used, has the top roll supporting weighting arm that at least one is kept by frame, wherein, clearer can be around the axle rotation, and in the guiding device of bearing element, can laterally so be placed on movably on the top roll supporting weighting arm, so that they are on the top roll that is positioned at assignment separately during the spinning process with respect to its rotating shaft;

It is characterized in that,

At least one end of the axle of clearer (1,4,5,18) is formed with holding device, and this holding device is engaged on the back of the guiding device of bearing element (6), and this guiding device forms with connecting rod guiding device form.

2. drafting system according to claim 1 is characterized in that, described holding device forms the collar (12,19).

3. drafting system according to claim 1 and 2, it is characterized in that described connecting rod guiding device has a spring element (8,14) respectively in the both sides of bearing element (6), can be by this connecting rod guiding device to clearer (1,4,5,18) axle applies a power, this power makes clearer (1,4,5,18) tightly suppress top roll.

4. according to a described drafting system in the aforementioned claim, it is characterized in that described top roll supporting weighting arm, bearing element (6) and clearer (1,4,5,18) axle so forms, so that they are formed on clearer (1,4,5,18) and the conduction between the frame connect.