EP0181697A1 - Procédés de cardage - Google Patents
Procédés de cardage Download PDFInfo
- Publication number
- EP0181697A1 EP0181697A1 EP85307134A EP85307134A EP0181697A1 EP 0181697 A1 EP0181697 A1 EP 0181697A1 EP 85307134 A EP85307134 A EP 85307134A EP 85307134 A EP85307134 A EP 85307134A EP 0181697 A1 EP0181697 A1 EP 0181697A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- slubbing
- slubbings
- finger
- spool
- winding
- 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- Withdrawn
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H13/00—Other common constructional features, details or accessories
- D01H13/04—Guides for slivers, rovings, or yarns; Smoothing dies
-
- 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
- D01G15/62—Slubbing-winding apparatus
Definitions
- the present invention relates generally to the manufacture of spun yarns by the woollen system. More particularly the present invention relates to a woollen carding process and the production of denser spools of woollen slubbings or slivers.
- the raw material or blend of staple fibres is carded with the objects of disentangling the fibres from each other, freeing dirt, vegetable matter and other unmounted contaminants, improving the mixing of fibres, particularly when more than one fibre type is included in the blend, evening out the flow of material to produce a web of fibres as uniform as possible in density and finally splitting the web into parallel ribbons, consolidating those ribbons into slubbings or slivers by rubbing them between two oscillating surfaces, and winding the slubbings into packages suitable for spinning.
- the raw material may consist of 100% wool or other natural fibre, blends of natural fibres with man-made or synthetic fibres, or 100% synthetic fibres. However, irrespective of the raw material processed such a process is commonly known as the Woollen Process by historical tradition.
- Slubbings are normally wound onto spools, empty spools being creeled on the card relative to a series of guides which ensure that slubbings are wound side-by-side on the spools in an orderly fashion.
- the spools are creeled on the card such that they rest on driven rollers which in turn drive the spools by frictional contact to effect winding.
- the winding speed is thus governed by the surface speed of the driven drums which is normally constant.
- the number of cheeses also depends upon the length of the spool, but generally the overall dimensions of a full spool are chosen as an optimum compromise for good ergonomics and economics of the whole process.
- Slubbings are produced and wound on the card as soft - twistless strands having low tensile strength.
- Some tensile strength is derived from interfibre entanglements and consolidation of the fibre assembly in the rubbing process, and this strength is sufficient to enable winding the slubbings at a low tension draft of about 6% without irregularly stretching the slubbing or in any way reducing its evenness.
- spools of slubbings tend to be soft with a density in the material of the order of 0.15 gm/cc, depending upon the raw material being processed. This low density of material limits the amount of slubbing which can be wound on a full spool of reasonable and acceptable diameter.
- Spools of woollen slubbings are handled at the card and again at the spinning frame, and in practice spool related tasks form a high proportion of the total labour reqirement in both carding and spinning.
- the material capacity of the spool thus has a limiting effect on the economic efficiencies of both the carding process and the spinning process.
- the invention seeks to provide a method and equipment for winding slubbings tightly, thus increasing the density of slubbings on the spool, and increasing the net amount of material wound on the spool without increasing its finished diameter.
- a method of handling slubbings in the woollen process including positioning one or more finger guides in the path of the same number of slubbings, and wrapping a slubbing around each finger guide to thereby create a stress or tension therein before the slubbings are directed for further processing.
- a method of winding slubbings tightly in a carding process including placing one or more finger guides with its longitudinal axis generally in line with output from a carding machine and immediately before a winding spool of the carding machine, feeding a slubbing to each finger guide from the carding machine, wrapping each slubbing around its finger guide to develop a stress or tension therein and delivering from the finger guide the slubbing on to the surface of a spool or spool drive roller for winding on to the spool.
- a further disadvantage of current spool winding practice is apparent when it is desired to break down the spool into separate and individual cheeses of slubbings. This is sometimes practised in order to improve machine efficiency in a spinning process, or in order to accommodate the special requirements of a particular spinning machine.
- Softly wound cheeses at present can be easily deformed and/or damaged in handling an further processing, leading to wastage of material.
- the method of the present invention may be employed to enable woollen slubbings to be drafted on the card, immediately before winding on the spool.
- the invention thus provides a method of processing whereby woollen slubbings can be drafted as part of the total carding process immediately before winding on the spool, and wound as spools of increased density and net weight of material.
- the invention seeks to provide apparatus to effect drafting of the slubbings between the stage of rubbing to consolidate the slubbings and winding those slubbings, and to further wind these slubbings into spools of significantly increased density.
- an apparatus for winding slubbings tightly in a carding process including one or more finger guides positioned with their longitudinal axis generally in line with an output from a carding machine and immediately before a winding station thereof, the arrangement being such that a slubbing is fed to each finger guide around which it is wound to produce a stress or tension in the slubbing before it is delivered by the finger guide on to the surface of a spool or spool drive roller of the winding station for collection on the spool.
- the finger may have an acute bend at its delivery end adjacent the spool or spool drive roller and have a pigtail at its opposite input end.
- the apparatus comprises a plurality of finger guides 1 mounted on a fixed shaft 2 and having an acute bend 3 at a delivery end thereof and a pigtail 4 at the opposite input end.
- the shaft 2 with its plurality of finger guides is fixed to a chassis of the woollen card condenser (not shown) in place of the usual assembly of slubbing guides, and can be designed to be accommodated by the same fixing brackets provided for the usual guide assembly.
- Woollen slubbings 5 are fed to the finger guides 1 via the pigtails 4 and are wrapped around the finger guides 1, thereby using a "capstan” effect to develop a stress or tension in the slubbings between the pigtail 5 and the delivery point 3 of the finger guides 1.
- the acute bends 3 of the delivery points serve to locate the slubbings and guide them precisely on to the surface of the spool drive roller 6.
- the delivery points 3 of the finger guides 1 are preferably in light rubbing contact with or are very closely spaced from the surface of roller 6 so that contact between the slubbings and a solid surved surface is substantially continuous. From rollers 6 the slubbings pass on to be wound on to the spool 7.
- the finger guides 1 are preferably made from material of circular cross-section and are positioned approximately tangential to the surface of roller 6.
- the acute bends 3 at the delivery ends of finger guides 1 are in light contact with, or are closely spaced from, the surface of roller 6.
- the butt ends of the finger guides 1 can be rigidly attached to the shaft 2, upon which the finger guides are supported, or they can be attached in a flexible or hinged manner which allows for irregularities in the surface of roller 6 or in the thickness of the slubbings 5.
- the acute bend 3 is preferably located close to the point of contact between the spool 7 and roller 6.
- Figure 3 is an enlarged view of a finger guide 1 having a slubbing 5 feeding via the pigtail 4, wrapping the finger guide by 2.1/2 turns, and being delivered at the acute bend 3.
- the tension developed in the slubbing between the pigtail 4 and the acute bend 3 depends upon the tension up-stream of the pigtail 4 and the number of wraps the slubbing makes around finger guide 1.
- Figure 4 is an enlarged view of an alternative design of finger guide 1 which may be preferred when processing some materials and slubbing counts.
- the finger guide 1 is twisted in a spiral shape, the amplitude of which spiral is less than the diameter of the material comprising finger 1.
- the slubbing 5 is wrapped around the finger 1 in the same sense as the spiral twist of finger 1, and this spiral then generates a false twist in the slubbing, upstream of the finger guides 1, in a known fashion.
- This false twist can be of advantage in consolidating the slubbing and importing a temporary tensile strength to the slubbing.
- FIG. 5 & 6 A preferred design of finger guide is illustrated in Figures 5 & 6 which offers some practical advantages when used in an industrial or mill environment.
- the acute bend 3 is replaced by a flat or spatulate member 9.
- the shank of the guide is attached to a sleeve 8 which inturn is a sliding fit on the bar 2.
- the member 9, which can be made of metal or a plastics material, is chamferred at its distal end to enable it to fit closely into the nip between the roller 6 and spool 7.
- the member 9 rests tangentially on the spool drive roller 6 and the slubbing 5 passes from the guide 1 under the member 9 between it and the spool drive 6. Owing to the slide fit of the sleeve 8 on the bar 2, the finger 1 can rotate and the member 9 therefore rests on the roller 6 under its own weight.
- the guide is thus self-adjusting to the surface of the roller, ensuring relatively constant pressure on the roller surface independant of the thickness of the slubbing 5 which tends to vary by a small but significant amount in a random manner.
- the spatulate member 9 has the further advantage that its cross-sectional shape inhibits the accumalation of loose fibre which can be produced when running strands of staple fibre are guided or contacted with elements or components of circular cross-section.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Preliminary Treatment Of Fibers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NZ209825 | 1984-10-09 | ||
NZ20982584 | 1984-10-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0181697A1 true EP0181697A1 (fr) | 1986-05-21 |
Family
ID=19920932
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85307134A Withdrawn EP0181697A1 (fr) | 1984-10-09 | 1985-10-04 | Procédés de cardage |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP0181697A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0252569A2 (fr) * | 1986-07-09 | 1988-01-13 | Wool Development International Limited | Procédé de cardage |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB666236A (en) * | 1948-09-04 | 1952-02-06 | Saco Lowell Shops | Machines for balling slivers used in preparing fibers for spinning |
GB883609A (en) * | 1960-03-16 | 1961-12-06 | Herbert Steinwandt | Movable sliver guide for winding cross-wound bobbins on draw frames or slubbing machines |
FR2285478A1 (fr) * | 1974-09-20 | 1976-04-16 | Platt Saco Lowell Ltd | Appareil perfectionne de bobinage de meches de matiere textile |
-
1985
- 1985-10-04 EP EP85307134A patent/EP0181697A1/fr not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB666236A (en) * | 1948-09-04 | 1952-02-06 | Saco Lowell Shops | Machines for balling slivers used in preparing fibers for spinning |
GB883609A (en) * | 1960-03-16 | 1961-12-06 | Herbert Steinwandt | Movable sliver guide for winding cross-wound bobbins on draw frames or slubbing machines |
FR2285478A1 (fr) * | 1974-09-20 | 1976-04-16 | Platt Saco Lowell Ltd | Appareil perfectionne de bobinage de meches de matiere textile |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0252569A2 (fr) * | 1986-07-09 | 1988-01-13 | Wool Development International Limited | Procédé de cardage |
EP0252569A3 (en) * | 1986-07-09 | 1990-04-18 | Wool Development International Limited | Improvements to carding process |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): BE DE FR GB IT NL |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19870122 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: LAPPAGE, JAMES Inventor name: BEDFORD, JAMES |