GB2056513A - Conversion of fibrous webs to slivers - Google Patents

Conversion of fibrous webs to slivers Download PDF

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Publication number
GB2056513A
GB2056513A GB8025634A GB8025634A GB2056513A GB 2056513 A GB2056513 A GB 2056513A GB 8025634 A GB8025634 A GB 8025634A GB 8025634 A GB8025634 A GB 8025634A GB 2056513 A GB2056513 A GB 2056513A
Authority
GB
United Kingdom
Prior art keywords
conveyor
conveyor belts
sliver
conveying
rollers
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB8025634A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kombinat Textima VEB
Original Assignee
Kombinat Textima VEB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kombinat Textima VEB filed Critical Kombinat Textima VEB
Publication of GB2056513A publication Critical patent/GB2056513A/en
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/02—Carding machines
    • D01G15/12—Details
    • D01G15/46—Doffing or like arrangements for removing fibres from carding elements; Web-dividing apparatus; Condensers
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/02—Carding machines
    • D01G15/12—Details
    • D01G15/46—Doffing or like arrangements for removing fibres from carding elements; Web-dividing apparatus; Condensers
    • D01G15/52—Web-dividing arrangements
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/70—Constructional features of drafting elements
    • D01H5/72—Fibre-condensing guides

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Abstract

A device for the conversion of a fibrous web 2 into a sliver 26, on a carding machine, has a pair of conveying rollers 4, 5 and two conveyor belts 7 and 8 disposed in a plane and moving with their upper runs 17 and 18 towards each other. The rollers 4, 5 feed the web 2 into a condenser chamber 6 which has an outlet opening 14 arranged above the conveyor belts 7, 8 which pass the compacted web to a transverse belt conveyor 20 whose upper run 19 lies in the conveying plane of the conveyor belt 7, 8. In the zone of the conveyor 20 the fibrous material is gathered into sliver 26 and passed via a funnel 22' to drawing rollers 23 which draw the sliver out of the machine in the longitudinal direction thereof. In a second form the web planes vertically downwards between conveyor rollers onto an horizontal conveyor parallel to and immediately adjacent the roller pair. The sliver is carried away by a second conveyor lying at the delivery end, and at right angles to the first conveyor. <IMAGE>

Description

SPECIFICATION Device for the conversion of a fibrous web to a sliver This invention relates to a device for the conversion of a fibrous web to a sliver on carding machines or the like, having a pair of conveying rollers and at least two endless conveyor belts which, with their runs facing the pair of conveying rollers, pass on the sliver which is formed in an accumulation zone.
A web doffing device (German Patent Specification 1912 452) is known wherein the doffing and collection of a fibrous web coming from the delivery mechanism of a carding machine to a sliver is effected by means of a plurality of conveyor belts which are at a tangent to the delivery mechanism and running in opposite directions in pairs. Whereas the conveying plane of the delivery mechanism slopes gently, that of the conveyor belts at a tangent is almost perpendicular. The moved conducting element in the form of the conveyor belts provides the possibility of removing from the delivery mechanism a fibrous web coming from a highspeed carding machine at high speed, collecting it and converting it into a sliver on a short travel between doffer and sliver formation point.It is also relatively simple to conduct the slivers formed in this manner out of the carding machine in the longitudinal direction of the card. There is, however, the disadvantage that with these arrangements it is only possible to obtain slivers of inadequate uniformity because, owing to the almost perpendicular conveying plane of the conveyor belts, there is uneven condensing in the enclosure zone formed between the conveyor rollers-and the tangent conveyor belt.
Because of its own weight the fibrous web is enclosed and condensed to a greater extent between the lower roller of the delivery mechanism and the conveyor belt than is possible between the upper roller and the conveyor belt. The result is an irregu larformation of the sliver. The sliver becomes unravelled. In orderto utilisethe advantages of this web doffing device with delivery mechanism and moved conducting element over other devices with fixed conducting element, efforts were made to dispose the conveying plane of the conveyor belt which is tangent to the delivery mechanism horizontally (German Patent Specification 1,685,617). In this way, it is true, an even conveyor belt was obtained but it became necessary to withdraw the sliver from the card laterally orto deflect it downwards.In both cases this leads to considerable difficulty in operation as the sliver is introduced into the drawing frame.
The invention aims at improving the quality of the sliver produced and to facilitate operation of the machine.
The problem underlying the invention is to draw out of the machine in the longitudinal direction the slivers formed in the accumulation zone of a pair of conveying rollers with a sloping to perpendicular conveying direction and a plurality of conveyor belts crossing the conveying direction.
Accordingly, the present invention consists in a device for the conversion of a fibrous web into a sliver on carding machines, having a pairofconvey- ing rollers and at least two conveyor belts which, by means of their runs facing the pair of conveying rollers, pass on the sliver formed in an accumulation zone, characterised in that immediately downstream of reversing points of the conveyor belts, lying in the conveying direction, there is disposed in their conveying plane the upper run of at least one transverse conveyor.
The invention makes it possible to form slivers at high speed and with the required uniformity on high-speed carding machines. Furthermore, operation of said high-speed carding machines is substantially improved since the sliver can be drawn out of the machine in the longitudinal direction.
In a development of the invention the accumulation zone is formed between the pair of conveyor rollers and the conveyor belts by an accumulation chamber which slopes in the direction of the conveyor belts and narrows, of which the intake opening is taken up to the delivery gap ofthe pair of conveyor rollers and over its entire width, and of which the outlet opening is tangent respectively to the upper strand of the conveyor belts and also the upper strand of the transverse conveyor and extends between the deflection points, facing away from one another, of the outer conveyor belts.
In a further development of the invention the two rollers of the pair of conveyor rollers are tangent to the upper strand of the conveyor belts and the upper strand of each transverse conveyor.
Finally, in another development according to the invention, there are associated with the pair of conveyor rollers two conveyor belts having the same conveying direction, their upper strand being tangent to the rollers, and at their deflection point which lies in the conveying direction there being situated in each case a transverse conveyor the upper strand of which lie in the conveying plane of the conveyor belts.
In orderthatthe invention may be more readily understood, reference is made to the accompanying drawings which illustrate diagrammatically and by way of example two embodiments thereof, and in which: Figure 1 shows a fibrous web acceptance station wherein two conveyor belts transport the sliver to a common transverse conveyor, in plan view; Figure 2 is a side elevation of Figure 1; and Figure 3 shows a web acceptance station wherein a transverse conveyor is associated with each conveyor belt.
In the manner already known, a fibrous web 2 coming from a doffer-not shown in the drawing-is conveyed to a pair of conveyor rollers 1 which function as condensers.
Immediately adjoining the nip 3 of the conveyor rollers 4; 5 (Figures 1 and 2) is an accumulation chamber 6. The conveying direction of the pair of conveyor rollers 1 and ofthe accumulation chamber 6 slopes in the direction of the conveyor belts 7; 8.
The intake opening 9 ofthe accumulation chamber 6 is taken uptothe nip3 ofthe pair ofconveyor rollers 1 and extends over its entire width. The crosssection of the accumulation chamber6 bounded by the four conducting walls 10; 11; 12; 13 decreases up to the outlet opening 14 of the accumulation chamber 6. The outlet opening 14 extends between the reversing points 15; 16, facing away from one another, of the outer conveyor belts 7; 8. In this arrangement the outlet opening 14 is tangent to the upper run 17 ofthe conveyor belt 7, to the upper run 18 of the conveyor belt 8 and also to the upper run 19 of a transverse conveyor 20. The conveyor belts 7; 8 and the transverse conveyor 20 have the same conveying plane.In this arrangement the upper run 19 of the transverse conveyor 20 extends between the reversing points 21; 22, facing one another and lying in the conveying direction, of the conveyor belts 7; 8, in the direction of a funnel 22' and drawing rollers 23 disposed downstream of the transverse conveyor 20. The conveying direction of the fibrous web in the accumulation chamber6 is perpendicularto that of the conveyor belts 7; 8 and the conveying direction of the transverse conveyor20 is perpendicularto that of the conveyor belts 7; 8, that is to say in the longitudinal direction of the machine. The fibrous web 2 running to the pair of conveying rollers 1 passes through these and arrives via the intake opening 9 in the sloping accumulation chamber 6 and is pushed along its narrowing cross-section towards the outlet opening 14 and thereby compacted.The compacted web emerging from the outlet opening 14 arrives on the upper runs 17 and 18 respectively of the conveyor belts 7 and 8, which are running towards one another, and is passed by these to the transverse conveyor 20 and from there as sliver 26 to the drawing rollers 23 and drawn out of the machine in the longitudinal direction of the latter.
In the construction shown in Figure 3 the pair of conveying rollers 1 has a perpendicular conveying direction relative to the conveyor belts 7; 8. The con veyor belts 7; 8 which rotate in the same conveying direction are at a tangent, by their respective upper runs 17 and 18, to thetwo conveying rollers 4; 5. At the reversing points 27 and 28 of the conveyor belts 7 and 8 lying in the conveying direction there is respectively arranged a transverse conveyor 29 and 30 with an upper run 31 and 32 lying in the conveying plane of the conveyor belts 7 and 8, the conveying direction of which is orientated in the longitudinal direction ofthe machine. The fibrous web 2, moved by the doffer-not shown-into the pair of conveying rollers 1 is transported in a perpendicular conveying direction through the conveying rollers 4; 5 and is compacted between the conveying rollers 4; 5 and the conveyor belts 7; 8, converted into a sliver 33; 34 and transported out of the machine in the longitudinal direction by the respective transverse conveyors 29; 30.

Claims (5)

1. Device for the conversion of a fibrous web into a sliver on carding machines, having a pair of conveying rollers and at least two conveyor belts which, by means of their runs facing the pair of conveying rollers, pass on the sliver formed in an accumulation zone, characterised in that immediately downstream of reversing points of the conveyor belts, lying in the conveying direction, there is disposed in their conveying plane the upper run of at least one transverse conveyor.
2. Device according to claim 1, wherein the accumulation zone is arranged between the pair of conveying rollers and the conveyor belts and is formed by an accumulation chamber having an intake and an outlet opening and which slopes and narrows in the direction of the conveyor belts, its intake opening reaching to the nip of the pair of conveying rollers and extending over its entire width, its outlet opening being tangent respectively to the upper run ofthe conveyor belts and the upper run of the transverse conveyor, said outlet opening extending between the reversing points, facing away from one another, of the outer conveyor belts.
3. Device according to claim 1, wherein the two conveying rollers of the pair of conveying rollers are tangentto the upper run ofthe conveyor belts and the upper run of each transverse conveyor.
4. Device according to claims 1 and 3, wherein there are associated with the pair of conveying rollers two conveyor belts with the same conveying direction which are tangent to the conveying rollers by their upper runs and at whose reversing points, lying in the conveying direction, there is respectively provided a transverse conveyor with its upper run lying in the conveying plane of the conveyor belts.
5. Device for the conversion of a fibrous web into a sliver, substantially as herein described with reference to and as shown in Figs. 1 and 2 or Fig. 3 ofthe accompanying drawings.
GB8025634A 1979-08-07 1980-08-06 Conversion of fibrous webs to slivers Withdrawn GB2056513A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD21484479A DD145285A1 (en) 1979-08-07 1979-08-07 DEVICE FOR FORMING A FIBERGLAVE ASSEMBLY TO A FIBER BELT

Publications (1)

Publication Number Publication Date
GB2056513A true GB2056513A (en) 1981-03-18

Family

ID=5519586

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8025634A Withdrawn GB2056513A (en) 1979-08-07 1980-08-06 Conversion of fibrous webs to slivers

Country Status (4)

Country Link
CH (1) CH646203A5 (en)
DD (1) DD145285A1 (en)
DE (1) DE3019724A1 (en)
GB (1) GB2056513A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0076087A1 (en) * 1981-09-24 1983-04-06 Carding Specialists (Canada) Limited Method and apparatsu for forming a sliver
GB2144159A (en) * 1983-07-30 1985-02-27 Truetzschler & Co Method and device for combining a fibre web to form a fibre sliver in a carding machine
EP0155656A2 (en) * 1984-03-22 1985-09-25 Spinnbau GmbH Apparatus for introducing a nap into a roll system
EP0365856A1 (en) * 1988-10-06 1990-05-02 Maschinenfabrik Rieter Ag Crossband arrangement at the exit of a carding machine
US5274883A (en) * 1991-11-26 1994-01-04 Hollingsworth (U.K.) Limited Carding apparatus with drafting and autolever device
EP0677602A2 (en) * 1994-04-14 1995-10-18 Paul Hartmann Aktiengesellschaft Method and apparatus to produce a sliver of fibre material
EP0962561A1 (en) * 1998-06-05 1999-12-08 FONDERIE OFFICINE RIUNITE F.O.R. ING. GRAZIANO DI L. GRAZIANO & C. S.a.s. A carding machine with a doffer roller
EP1076122A2 (en) * 1999-07-22 2001-02-14 Octir Industriale S.P.A. Device to automatically collect and insert the webs fed from a double comber of wool cards

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT390282B (en) * 1986-05-15 1990-04-10 Fehrer Ernst Method and device for producing a yarn

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0076087A1 (en) * 1981-09-24 1983-04-06 Carding Specialists (Canada) Limited Method and apparatsu for forming a sliver
US4501048A (en) * 1981-09-24 1985-02-26 Carding Specialists (Canada) Ltd. Method and apparatus for forming a sliver
GB2144159A (en) * 1983-07-30 1985-02-27 Truetzschler & Co Method and device for combining a fibre web to form a fibre sliver in a carding machine
US4630336A (en) * 1983-07-30 1986-12-23 Trutzschler Gmbh & Co. Kg Apparatus for gathering a fiber web into a sliver in a carding machine
GB2178074A (en) * 1983-07-30 1987-02-04 Truetzschler & Co Method and device for combining a fibre web to form a fibre sliver in a carding machine
EP0155656A2 (en) * 1984-03-22 1985-09-25 Spinnbau GmbH Apparatus for introducing a nap into a roll system
EP0155656A3 (en) * 1984-03-22 1986-08-27 Spinnbau Gmbh Apparatus for introducing a nap into a roll system
US4980952A (en) * 1988-10-06 1991-01-01 Maschinenfabrik Rieter Ag Transverse conveyor arrangement at the outlet of a card
EP0365856A1 (en) * 1988-10-06 1990-05-02 Maschinenfabrik Rieter Ag Crossband arrangement at the exit of a carding machine
US5274883A (en) * 1991-11-26 1994-01-04 Hollingsworth (U.K.) Limited Carding apparatus with drafting and autolever device
EP0677602A2 (en) * 1994-04-14 1995-10-18 Paul Hartmann Aktiengesellschaft Method and apparatus to produce a sliver of fibre material
EP0677602A3 (en) * 1994-04-14 1996-04-03 Hartmann Paul Ag Method and apparatus to produce a sliver of fibre material.
EP0962561A1 (en) * 1998-06-05 1999-12-08 FONDERIE OFFICINE RIUNITE F.O.R. ING. GRAZIANO DI L. GRAZIANO & C. S.a.s. A carding machine with a doffer roller
AU733530B2 (en) * 1998-06-05 2001-05-17 Fonderie Officine Riunite F.O.R. Ing. Graziano Di L. Graziano & C. S.A.S. A carding machine with a doffer roller
EP1076122A2 (en) * 1999-07-22 2001-02-14 Octir Industriale S.P.A. Device to automatically collect and insert the webs fed from a double comber of wool cards
EP1076122A3 (en) * 1999-07-22 2001-02-21 Octir Industriale S.P.A. Device to automatically collect and insert the webs fed from a double comber of wool cards

Also Published As

Publication number Publication date
CH646203A5 (en) 1984-11-15
DD145285A1 (en) 1980-12-03
DE3019724A1 (en) 1981-02-26

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)