EP1056893A1 - Ereitung - Google Patents
EreitungInfo
- Publication number
- EP1056893A1 EP1056893A1 EP99903843A EP99903843A EP1056893A1 EP 1056893 A1 EP1056893 A1 EP 1056893A1 EP 99903843 A EP99903843 A EP 99903843A EP 99903843 A EP99903843 A EP 99903843A EP 1056893 A1 EP1056893 A1 EP 1056893A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fiber
- fibers
- fiber mass
- drum
- sieve drum
- 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.)
- Granted
Links
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G99/00—Subject matter not provided for in other groups of this subclass
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G19/00—Combing machines
- D01G19/06—Details
- D01G19/14—Drawing-off and delivery apparatus
- D01G19/18—Roller, or roller and apron, devices, e.g. operating to draw-off fibres continuously
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G9/00—Opening or cleaning fibres, e.g. scutching cotton
- D01G9/08—Opening or cleaning fibres, e.g. scutching cotton by means of air draught arrangements
- D01G9/10—Opening or cleaning fibres, e.g. scutching cotton by means of air draught arrangements using foraminous cylinders
Definitions
- the invention relates to a method and an apparatus for preparing a fiber mass for a fiber sorting device.
- the fiber mass to be combed is presented in the form of a wad of cotton, which is formed on a preparation machine from several fiber tapes.
- the fiber material is guided on the circumference of a sieve drum during the separation process. Furthermore, it was proposed to connect a drafting system upstream of the screening drum, which transfers the stretched nonwoven fabric to the subsequent screening drum.
- the object of the invention is therefore to propose a method or a device for preparing the fiber mass for a fiber sorting device, which enables improved fiber selection.
- the fiber mass to be processed is processed into individual fibers lying essentially next to one another and, as seen in the transport direction of the fiber mass, longitudinal fibers and the fibers thus aligned are guided in their position to a subsequent sorting device.
- This type of preparation enables each individual fiber to be treated in a targeted manner during the sorting process and ensures that the individual fibers are introduced into the sorting area in their longitudinally extended position and lying next to one another in parallel. It is particularly important that the individual fibers are held in their position on their transport route to the sorting device after their longitudinal alignment and separation.
- the fiber mass be subjected to at least one warp for the longitudinal alignment and parallelization of the fibers.
- the proposed drafting process enables the longitudinal alignment of the fibers and the thinning out of the fiber mass up to a template with individual fibers lying next to one another to be carried out simply and effectively.
- the fiber mass can then be subjected to a warp after the longitudinal alignment of the fibers.
- a device for preparing a fiber mass for a fiber sorting device is proposed, the fiber mass to be processed being warped in a drafting unit, so that at the exit of the drafting unit there are essentially adjacent and longitudinally oriented fibers and these fibers in their position via at least one guide means be fed to a fiber sorting device.
- a sieve drum is preferably selected as the guide means, in the interior of which a negative pressure is applied at least in the transfer area to the fiber sorting device. With this device, the individual fiber is securely held or guided. Furthermore, it is proposed that the screening drum be part of the delivery roller pair of the drafting unit and cooperate with a pressure roller. This makes it possible to hold the fibers emerging from the drafting system directly on the sieve drum and to guide them safely due to the negative pressure applied within the sieve drum. 4
- the drafting unit can preferably be provided with an apron drafting system.
- the drafting unit is preceded by a device with which it is possible to broaden the fiber mass presented to the drafting unit. This means that the throughput per unit of time can be increased. only an adjustment of the width of the drafting rollers is necessary.
- the fiber mass to be processed being broken up into individual fibers by a disintegration roller, which are then released via a guide channel onto the peripheral surface of a rotatably mounted sieve drum, in the interior of which a partial vacuum is applied.
- means are arranged in the guide channel which bring about an alignment of the fibers emitted by the opening roller so that they hit the subsequent sieve drum approximately in a tangential direction.
- the agents can e.g. serve to build up an electrostatic field transverse to the conveying direction of the fiber material. Due to the appropriate polarization of the fibers, these are aligned by applying an electrical voltage and thus reach the subsequent screen drum approximately in a tangential orientation.
- This proposed device can also be used to increase productivity
- edge portions of the fiber mass presented are not negatively influenced during the widening process (fraying or thinning of the edges), it is proposed to provide guide means which exert a clamping effect on the fiber material in the area of the widening.
- the fiber sorting device be formed from an approximately tangential to the screen drum, to the interior of which a negative pressure is applied, through which air flows, which is provided with an opening pointing to the screen drum, into which the screen drum is partially immersed and whose air flow in the direction of rotation Screen drum shows and at least over a portion of the opening on the inner surface of the screen drum air-impermeable means are provided which prevent air flow through the screen jacket from the outside inwards.
- the selection process e.g. can be optimally carried out by an air flow if the fiber material is exposed to the air flow in the form of individual fibers lying next to one another.
- the stretched parallel position of the fibers in the direction of transport is important for a targeted separation. This ensures that the long fibers are held by the applied holding force during the separation process and are excluded from the separation.
- the template in the form of individual fibers also ensures that each fiber can be acted upon by the air flow. It is therefore important that the processed fiber mix with the individual and longitudinal fibers remains in its structure until it reaches the separation area. The result of this is that the fibers are guided along the entire transport route according to their longitudinal orientation and separation until they reach the separation area. In the separation area, the fibers are then, as already described, subjected to a holding force and exposed to an air flow. The fibers that are released from the holding force are entrained and separated by the air flow.
- the invention is not limited to the claimed preparation of the fiber mass in combination with a sorting device in the form of a channel through which air flows 6 which immerses the sieve drum. Rather, other sorting devices can also be used to process the fiber mass prepared according to the invention.
- long fibers cannot be generally defined in millimeters or inches and is determined by the desired and desired
- Fig. 1 is a schematic side view of a drafting device in combination with a screen drum with fiber selection device.
- Fig. 2 is a schematic plan view of FIG. 1 in the area of the fiber guide between the front clamping line of the drafting system and the separation point.
- Fig. 3 is a schematic view of an opening roller with subsequent conveying channel and sieve drums.
- FIG. 4 shows a schematic side view according to FIG. 3.
- Fig. 5 is a schematic partial view of another embodiment with an opening roller, a downstream conveyor channel and screen drum.
- FIG. 6 shows a schematic side view according to FIG. 5
- FIG. 7 shows a schematic plan view of a device for widening the fiber mass presented
- FIG. 8 A side view according to Fig. 7 9 shows a front view of a further exemplary embodiment of a device for widening the fiber mass presented.
- FIG.10 A side view according to Fig.9
- FIG.11 A top view according to Fig.9
- the drafting system 1 shows an exemplary embodiment, the fiber material F being fed to a drafting device 1.
- the drafting system 1 is formed from an input roller pair 3, 4 and a subsequent roller pair 6, 7, these roller pairs forming a first draft zone V1.
- To guide the fibers released from the clamping line of the rollers 6, 7, the roller 6 and the roller 7 are wrapped with a strap 8 or 9, which are deflected or guided in the area of a subsequent clamping line K.
- the special design of these belt guides is not discussed here, especially since such designs are known in particular for drafting units in ring spinning machines and have been described in detail there.
- the second draft zone or also called the main draft zone is formed by a driven screen drum 10 on which a pressure roller 11 rests and thus forms the clamping line K already described.
- the sieve drum 10 is, as indicated schematically, on the one hand connected to a source U, via which a negative pressure is generated inside the sieve drum 10.
- the screen drum is connected to a source D, via which an overpressure can be generated in a specific area of the screen drum 10.
- a channel 13 is arranged approximately tangentially to the screening drum 10, through which air flows and has an opening 14 pointing towards the screening drum 10, into which the screening drum is partially immersed.
- a cover element 15 is fixed on the inner surface of the screen jacket 9 of the screen drum 10 8 attached, which prevents air from entering the screening drum in this area.
- a cover element 18 is also fixedly attached to the inside of the screen jacket 9 so that the material removed on the screen drum can be detached and removed by a pair of rollers 20.
- the cover element 18 is provided with openings 21 through which an air flow to the outside can be generated to support the detachment of the fiber material F1.
- the openings 21 can be arranged side by side across the width of the screening drum 10.
- the compressed air is supplied via the compressed air source D, the space 22 of the fixed hub 12 and the openings 23 which open into a space 24.
- the space 25 of the hub 12 acted upon by the vacuum source U is connected to the interior of the drum 10 via the openings 26 and 27.
- the fiber material F fed to the drafting unit 1 is warped in the drafting zones V1, V2 to such an extent that the fiber material F is dissolved or warped so far after the clamping line K that individual fibers FA lying next to one another are present.
- FIG. 2 shows a top view of the delivery area to the screening drum 10. 2 shows two areas A, B, the meaning of which will be discussed below.
- the fibers FA (illustration A of FIG. 2), which are elongated and oriented parallel to one another, are transferred into the separation area 30 of the opening 14 of the air duct 13.
- the screening drum 10 is supported by a plurality of rollers R arranged on its outer circumference, at least one of the rollers being provided with a drive (not shown).
- the rollers R are located outside and to the side of the guide surface for the fiber material F1.
- the fibers reach the area of the opening 14 of the channel 13 and are subjected to an air flow from the channel 13 there. All fibers and other constituents (e.g. shell parts and other impurities) which are not held on at least one side by the negative pressure prevailing inside the screening drum 10 when traversing the opening 14 are entrained and removed by the air flow. It can be seen from this that the length of the cover element 15 must be designed such that only the fibers that are to be separated as short fibers are removed from the air flow.
- the fibers, the length of which exceeds the length of the cover element 15, are held in the inlet region of the opening 14 and / or in the outlet region by the negative pressure inside the sieve drum 10.
- section B shows how the individual fibers FA would align themselves after leaving the clamping line K if they were not guided or held by the application of a negative pressure within the sieve drum 10.
- the fibers FA are pretensioned longitudinally by the stretching process and, after leaving the clamping line K, would spring back into a crimped shape due to their spring tension, as is indicated schematically. As a result, a precisely defined deposition process would no longer be possible. It is therefore absolutely necessary that the position and orientation of the fibers FA is maintained when leaving the clamping line K up to the separation area 30, as is shown in area A of FIG. 2. This arrangement is the only way to achieve a predefined fiber selection (separation rate in%). 10
- FIG. 3 shows a further exemplary embodiment, with an opening roller 35, which is accommodated in a housing 36, being used instead of the drafting device 1.
- the fiber material F is presented to the opening roller 35 via a channel 38 and a feed roller 39, which dissolves the fiber material F into individual fibers 40.
- a channel 41 opens into the housing 36, via which the fibers 40 are discharged downward onto a sieve drum 44.
- the sieve drum 44 is rotatably supported and a negative pressure is applied to the inside.
- a certain circumferential region of the sieve drum is sealed off from the outside via a cover element 45, which rests fixedly on the inside of the sieve drum 44, so that in this area no air flow can occur from the outside inwards.
- a further sieve drum 48 is rotatably arranged below the sieve drum 44, which is also provided on the inside with cover elements 49 and 50 to prevent an air flow from the outside inwards.
- the screening drum 48 corresponds approximately to the design of the screening drum 10 of FIG. 1 and also plunges into an opening 14 in an approximately tangentially arranged air duct 13.
- a removal roller 52 which serves to remove the selected fiber material F1, is also shown schematically.
- the fiber material F1 is fed to a subsequent process for further processing. It is also conceivable that devices are provided after the take-off roller 52 in order to combine the fiber material F1 into a fiber sliver.
- the peripheral speed U2 of the screening drum 48 is greater than the peripheral speed U1 of the screening drum 44 in order to subject the fiber material emitted by the screening drum 44 to a delay.
- the fiber material F fed via the channel 38 to the feed roller 39 is presented to the opening roller 35, which dissolves the material in individual fibers 40.
- These fibers 40 are discharged downward through a channel 41 onto the peripheral surface of the sieve drum 44. Due to the negative pressure prevailing in the sieve drum, the fibers 40 attach to the circumferential surface of the sieve drum 44 and are transferred by the rotary movement into a transfer point 42, at which they pass from the 11 subsequent drum 48 can be removed.
- the vacuum region of the sieve drum 44 is interrupted by the cover element 45.
- the negative pressure prevailing in the sieve drum 48 has the effect that the fiber mass is removed from the circumference of the sieve drum 44 in the delivery area 42.
- the fiber material Due to the greater circumferential speed U2 of the sieve drum 48, the fiber material is subjected to a warp when it is transferred to the sieve drum 48, which causes the individual fibers to be parallelized or aligned in the longitudinal direction. As already described, this is a necessary preparation for the subsequent separation process.
- the fibers thus prepared pass into the separation area or into the opening of the channel 13, the fiber selection being carried out by the air flow prevailing in the channel 13, as already described in FIG. 1.
- the fiber material then arrives in the area of the take-off roller 52 and is delivered to the take-off roller 52 and removed there with the aid of a cover element 49.
- FIG. 5 A further embodiment is shown in FIG. 5, wherein the fiber orientation of the fibers 40, which are led downwards via the guide channel 41 from a dissolving roller 35 (not shown), are aligned by the attachment of an electrostatic device 60 for the subsequent separation process.
- the electrostatic device 60 is arranged just above the circumferential surface of a subsequent sieve drum 62 and has two plates 63 and 64 which are poled differently.
- an electrostatic field is created which effects the orientation of the fibers in an approximately tangential direction to the peripheral surface of the subsequent screening drum 62. This is shown in particular in FIG. 6.
- the longitudinally oriented fibers thus placed on the peripheral surface of the sieve drum 62 are, as already described in the exemplary embodiments in FIGS.
- FIG. 7 shows a device 66 which is connected upstream of the drafting unit 1 (according to FIG. 1) in order to widen the fiber material F fed from a width B to a width B1.
- This broadening enables an increase in productivity or throughput per unit of time and the existing facilities are used more optimally.
- the device in the exemplary embodiment shown in FIGS. 7 and 8 consists of two belts 67 and 68 which are guided parallel to one another and which are deflected on the one hand by a roller 69 or 70.
- the second deflection point of the belts has not been shown.
- At least one of the deflection rollers of the belts is connected to a drive, not shown in detail.
- the belts 67 and 68 are inclined by the angle ⁇ .
- Following the first pair of belts 67, 68 is another pair of belts 71 and 72, the central axis of which overlaps the central axis of the drafting unit 1.
- the belt 71 is deflected on the one hand around the roller 73 and on the other hand around the input roller 4 of the drafting device 1.
- the belt 72 is deflected on the one hand around the roller 74 and on the other hand around the lower input roller 3 of the drafting device 1.
- the fiber material F fed is deflected by the angle ⁇ in the region of the deflection point US and conveyed further between the pair of belts 71, 72 and delivered to the drafting unit 1.
- the width of the fiber material F increases from the width B to the width B1.
- FIGS 9 to 11 show a further exemplary embodiment of a device 80 which is likewise suitable for widening the fiber template F from a width B to a width B1.
- This device 80 is also followed by the drafting unit 1 already described, to which the widened fiber material is delivered.
- the arrangement shown is a so-called "Möbius belt” which is placed around several guide rollers. At the outlet of the device 80 there is a pair of delivery rollers 84 and 85 from which the broadened fiber mass is delivered to the drafting unit 1.
- Essentially two conveyor belts 81 and 92 are used here, which interact with one another in the area of the broadening of the fiber material F being fed.
- the upper conveyor belt 81 is guided around the rollers 88, 89 and 87 and around the exit roller 84.
- the rollers 87 and 88 are slightly inclined relative to the discharge direction.
- a pressure roller 91 interacts with the roller 89 in order to transmit the drive from the drive roller 89 to the belt 81.
- the lower arrangement (FIG. 9) for deflecting the belt 92 corresponds in mirror image to the upper arrangement.
- the belt 92 is guided around the rollers 93, 94, 95 and around the output roller 85, the driven roller 95 also being assigned a pressure roller 96.
- the fiber material F can be fed with a width B at an angle ⁇ to the discharge direction of the device 80.
- the fiber material F is guided between the two belts 81 and 92 and delivered in the region of the rollers 84 and 85 in the longitudinal direction and widened (B1). With this facility it is 14
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH25498 | 1998-02-03 | ||
CH25498 | 1998-02-03 | ||
PCT/IB1999/000187 WO1999040245A1 (en) | 1998-02-03 | 1999-02-02 | Device for preparing a fibrous material for a fiber sorting process |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1056893A1 true EP1056893A1 (en) | 2000-12-06 |
EP1056893B1 EP1056893B1 (en) | 2003-05-14 |
Family
ID=4182823
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99903843A Expired - Lifetime EP1056893B1 (en) | 1998-02-03 | 1999-02-02 | Method and apparatus for the preparation of fibres for fibre sorting |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1056893B1 (en) |
AU (1) | AU2435999A (en) |
DE (1) | DE59905556D1 (en) |
WO (1) | WO1999040245A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113966417A (en) * | 2019-04-11 | 2022-01-21 | 马佐里机器纺织股份公司 | Combing machine for spinning preparation threads |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103741290A (en) * | 2013-11-29 | 2014-04-23 | 吴江市大业丝绸整理有限公司 | Dust cage for spinning |
CN108035015B (en) * | 2016-11-15 | 2023-07-21 | 江苏普美纺织有限公司 | Raw material selecting device |
CH713896A1 (en) * | 2017-06-15 | 2018-12-28 | Rieter Ag Maschf | Device for cleaning fiber material. |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IN171142B (en) * | 1987-03-19 | 1992-08-01 | Japan Cotton Technical And Eco | |
JPH01192826A (en) * | 1988-01-20 | 1989-08-02 | Irie Hekizai:Kk | Method for dispersing agglomerate of short fibers into single fibers and apparatus therefor |
DE4117252A1 (en) * | 1991-05-27 | 1992-12-03 | Winkler Duennebier Kg Masch | DEVICE FOR UNLOCKING FLAG CLUBS |
US5367747A (en) * | 1992-12-31 | 1994-11-29 | Zellweger Uster, Inc. | Needle-based apparatus for individualizing fibers and other textile entities for testing purposes |
DE4321351C1 (en) * | 1993-06-26 | 1994-09-22 | Udo Sauerbaum | Fibre-transporting and combing apparatus |
-
1999
- 1999-02-02 EP EP99903843A patent/EP1056893B1/en not_active Expired - Lifetime
- 1999-02-02 DE DE59905556T patent/DE59905556D1/en not_active Expired - Fee Related
- 1999-02-02 AU AU24359/99A patent/AU2435999A/en not_active Abandoned
- 1999-02-02 WO PCT/IB1999/000187 patent/WO1999040245A1/en active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO9940245A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113966417A (en) * | 2019-04-11 | 2022-01-21 | 马佐里机器纺织股份公司 | Combing machine for spinning preparation threads |
CN113966417B (en) * | 2019-04-11 | 2023-08-25 | 马佐里机器纺织股份公司 | Combing machine for spinning preparation line |
Also Published As
Publication number | Publication date |
---|---|
EP1056893B1 (en) | 2003-05-14 |
DE59905556D1 (en) | 2003-06-18 |
WO1999040245A1 (en) | 1999-08-12 |
AU2435999A (en) | 1999-08-23 |
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