WO2003033787A2 - Vorrichtung eines spinnaggregates - Google Patents
Vorrichtung eines spinnaggregates Download PDFInfo
- Publication number
- WO2003033787A2 WO2003033787A2 PCT/EP2002/010323 EP0210323W WO03033787A2 WO 2003033787 A2 WO2003033787 A2 WO 2003033787A2 EP 0210323 W EP0210323 W EP 0210323W WO 03033787 A2 WO03033787 A2 WO 03033787A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- suction
- zone
- opening
- individual fibers
- roller
- Prior art date
Links
- 238000009987 spinning Methods 0.000 title claims abstract description 12
- 239000002657 fibrous material Substances 0.000 claims abstract description 19
- 230000007935 neutral effect Effects 0.000 claims abstract description 14
- 239000000835 fiber Substances 0.000 claims description 54
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 description 4
- 210000000481 breast Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007383 open-end spinning Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
- D01H4/30—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
- D01H4/30—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls
- D01H4/32—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls using opening rollers
Definitions
- the invention relates to a device of a spinning unit for dissolving fiber material fed in a ribbon form into individual fibers by means of a dissolving roller that is air-permeable on its circumference and sucked along a first suction zone, and for transferring the individual fibers in the form of a fiber veil to an air-permeable one that is driven in the direction of movement of the individual fibers and along a second suction zone vacuumed quilt.
- a device of this type is known from DE 197 46 602 A1.
- Such devices are part of spinning units in which the fiber veil formed from the individual fibers is compressed into a narrow fiber structure during transport on the collecting surface and is passed through an air nozzle in this state to give a twist.
- a thread is then created which has a character similar to that of so-called air spinning.
- the circumference of the opening roller is permeable to air and is guided over a first suction zone arranged in the interior of the opening roller, which has the effect of holding the individual fibers to the periphery of the opening roller.
- the second suction zone assigned to the collecting surface will impair the first suction zone.
- the second suction zone serves the purpose of removing the individual fibers from the opening roller and feeding them to the collecting surface in the form of a fiber veil.
- the invention is based on the object, the individual fibers detached from the fiber material and transported over a certain distance along the circumference of the opening roller orderly wide fiber veil, without compressing the individual fibers, to hand over to the collection area.
- the object is achieved in that the first suction zone is separated from the second suction zone by an untreated neutral zone.
- the neutral zone which is expediently formed by an insert inside the opening roller, ensures that the second suction zone belonging to the collecting surface does not have an effect as far as the first suction zone, which support the dissolution of the fiber material to individual fibers and the initial transport of the individual fibers should.
- this neutral zone there is neither an air flow that passes through the perforation on the circumference of the opening roller, nor an air flow through the air-permeable collecting surface.
- the length of the neutral zone can be determined by experiments and is determined in such a way that there is no mutual interference between the first and the second suction zone.
- an overpressure zone located in the interior of the opening roller can follow the neutral zone in the direction of transport of the fiber material. This has a slight overpressure, which should support the transfer of the individual fibers to the collection area. The overpressure zone thus results in an additional flow which is directed toward the second suction zone associated with the collecting surface.
- the second suction zone is assigned a suction opening located on a suction housing, the beginning of which - in the direction of transport of the fiber material - corresponds approximately to the beginning of the overpressure zone.
- care must be taken to ensure that the start of the suction opening does not start too early. It is therefore advantageous if the beginning of the suction opening is formed by an adjustable edge so that, if necessary, a certain readjustment of the beginning of the suction opening can be carried out.
- FIG. 1 shows a partially sectioned side view of a device according to the invention
- Figure 2 is a view in the direction of arrow II of Figure 1, some components of Figure 1 are omitted for clarity.
- the device according to FIGS. 1 and 2 is part of a spinning unit, a large number of which are arranged in a row next to one another in a spinning machine.
- the device contains a feed device 1, to which fiber material 2 is fed in the form of at least one sliver.
- the feeding device 1 is followed by a dissolving device 3 which dissolves the fiber material 2 into individual fibers 4.
- the individual fibers 4 are then transferred to an air-permeable suctioned collecting surface 5, which is formed by the outside of a conveyor belt 6 rotating in the direction of movement A.
- the dissolved individual fibers 4 are received in the form of a wide fiber veil 7 on the collecting surface 5 and laterally compressed into a narrow fiber structure 8 in a manner to be described.
- the compressed fiber structure 8 is pressed lightly at a clamping point 9 by a clamping roller 10 onto the collecting surface 5. Immediately after this follows a swirl nozzle 11, in which the rotation of the thread 12 to be spun is generated. The thread 12 is drawn off in the draw-off direction B by a pair of draw-off rollers 13.
- the feed device 1 contains a feed roller 14 which is driven in the direction of rotation C.
- the feed roller 14 is assigned to the feed table 15, which can be pivoted about a pivot axis 16 and is pressed against the feed roller 14 by the pressure of a loading spring 17.
- the feed roller 14 is preceded by an inlet hopper 18 for the supplied fiber material 2.
- the opening device 3 contains a opening roller 19, which is driven in the same direction with the feed roller 14 in the direction of rotation D, and which the fiber material 2 is presented in the form of a sliver end, the so-called fiber beard 20.
- the circumference of the opening roller 19 has a set of teeth 22, the teeth of which advantageously have a negative breast angle on their toothbrushes.
- the opening roller 19 has a working width which corresponds to the width of the supplied fiber material 2.
- the first suction zone 23 Inside the opening roller 19 there is a suction zone, which is referred to below as the first suction zone 23 and which is connected to a vacuum source, not shown.
- a suction draft is generated against the lysed fibrous material 2, which pulls the fibrous material 2 deep into the toothed clothing 22 even when the opening roller 19 at relatively low speed running of, for example, 2000 min -1.
- the first suction zone 23 extends so far that the The fiber beard 20 to be combed and the area thereafter in which the individual fibers 4 are to be transported on the circumference of the opening roller 19 are vacuumed (see air arrows in FIG. 1).
- the first suction zone 23 is provided with a minus sign in FIG.
- the conveyor belt 6 is provided with a fine perforation, which allows suction from the outside inwards.
- the conveyor belt 6 is advantageously designed as a woven screen belt 25, as indicated in FIG. 2.
- a suction zone is also assigned to the conveyor belt 6, which is referred to below as the second suction zone 26 (see air arrows in FIG. 1) and which is likewise identified by a minus sign.
- the second suction zone 26 contains a suction opening 27 with side edges 28 and 29, which are shown in broken lines in FIG. It can be seen from this that the second suction zone 26 tapers in the direction of movement A of the conveyor belt 6.
- the side edges 28 and 29 of the suction opening 27 thereby form means for compressing the individual fibers 4 transversely to their direction of movement to form a sliver-like fiber structure 8.
- the suction opening 27 is arranged in a suction housing 30 which is connected via a connection 31 to a vacuum source, not shown.
- the clamping roller 10 defines the already mentioned clamping point 9 for the compressed fiber structure 8.
- the second suction zone 26 has compressed the initially spread fiber veil 7 to the fiber structure 8 transversely to its direction of movement, as corresponds approximately to the conditions in a conventional drafting system, so that the sliver-like compressed fiber structure 8 can enter the swirl nozzle 11 in this form, as is known in so-called air spinning. As a result, the fiber structure 8 is twisted into the thread 12.
- the take-off roller pair 13 following the swirl nozzle 11 delivers the spun thread 12 in the take-off direction B to a winding device, not shown, where the thread 12 is wound onto a package.
- the geometrical arrangement of the device is such that the collecting surface 5 of the conveyor belt 6 is so closely adjacent to the circumference of the opening roller 19 that the individual fibers 4 can be transferred to the collecting surface 5 as fiber veils 7 at the end of the first suction zone 23.
- the peripheral speed of the conveyor belt 6 is greater than the current speed of the incoming individual fibers 4.
- the peripheral speed of the opening roller 19 can be lower than that of the opening rollers, such as are used for example in open-end rotor spinning. Since the fiber beard 20 is pulled deep into the tooth set 22, combing is carried out intensively. Because of the preferably negative breast angle of the teeth, the individual fibers 4 at the end of the first suction zone 23 passed very quickly to the collecting surface 5, since a negative chest angle tends to release the transported individual fibers 4 to the outside.
- the fiber veil 7 deposited on the collecting surface 5 is still quite wide in its initial width, but is successively narrowed laterally on the conveyor belt 6 by the tapering second suction zone 26 and compressed to such an extent that it can easily enter the swirl nozzle 11.
- the side edges 28 and 29 of the suction opening 27 run towards one another in a V-shape such that both side edges 28 and 29 are at an acute angle to one another.
- the initial width of the suction opening 27 defines the working width of the conveyor belt 6 or the collecting surface 5 and initially corresponds to the initial width of the fiber curtain 7 removed from the opening roller 19.
- the end region of the suction opening 27 is only a relatively narrow suction slot 32, which connects to the fiber structure to be compressed 8 is adjusted.
- the opening roller 19 is provided with edge rims 35 and 36 which are so wide that the conveyor belt 6 is well supported thereon.
- the edge rims 35 and 36 also ensure that the collecting surface 5 is well adapted to the circumference of the opening roller 19 with regard to its curvature.
- the diameter of the edge rims 35 and 36 is slightly larger than the outside diameter of the tooth set 22.
- a front deflection roller 37 driven in the direction of rotation E is provided for the conveyor belt 6, while spatially behind and below the opening roller 19 - viewed from the operating side of the spinning unit - the conveyor belt 6 wraps around a rear deflection roller 38.
- the first suction zone 23 in the interior of the opening roller 19 serves the purpose of pulling the fiber beard 20 deep into the tooth set 22 while combing it into individual fibers 4. Even during the initial transport of the individual fibers 4 on the circumference of the opening roller 19, the individual fibers 4 are held by the suction on the periphery of the opening roller 9 in such a way that they in no case become faster than the peripheral speed of the opening roller 19.
- the second suction zone 26 associated with the collecting surface 5, which is located inside the loop of the conveyor belt 6, serves to remove the individual fibers 4 from the opening roller 19 and to transfer them in the form of a fiber veil 7 to the collecting surface 5.
- the features of this invention ensure that the first suction zone 23 and the second suction zone 26 do not influence one another and that in particular the second suction zone 26 does not act back to the first suction zone 23.
- a cover is provided in the interior of the opening roller 19, which is connected to the first suction zone 23 and forms a neutral zone 39 between the first suction zone 23 and the second suction zone 26. This neutral zone 39 is not vacuumed and prevents any air flow from passing through the circumference of the opening roller 19 or the collecting surface 5.
- an overpressure zone 40 is now provided inside the opening roller 19 following the neutral zone 39, which is identified in FIG. 1 by a plus sign and by air arrows , This overpressure zone 40 supports the delivery of the individual fibers 4 to the conveyor belt 5 and thus supports the second suction zone 26.
- the overpressure zone 40 can be dispensed with.
- the beginning 41 of the suction opening 27 should roughly match the beginning 42 of the overpressure zone 40. For this reason, provision is made to make the beginning 41 of the suction opening 27 adjustable within certain limits in order to adapt to operational conditions. For this reason, the beginning 41 of the suction opening 27 is formed by an adjustable edge 43.
- FIG. 1 also shows a dirt collecting trough 44 in which the dirt components thrown out of the fiber material 2 by the opening roller 19 are collected in a known manner and disposed of in one of the known ways.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2001151642 DE10151642A1 (de) | 2001-10-11 | 2001-10-11 | Vorrichtung eines Spinnaggregates |
DE10151642.8 | 2001-10-11 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2003033787A2 true WO2003033787A2 (de) | 2003-04-24 |
WO2003033787A3 WO2003033787A3 (de) | 2003-09-12 |
Family
ID=7703044
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2002/010323 WO2003033787A2 (de) | 2001-10-11 | 2002-09-14 | Vorrichtung eines spinnaggregates |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE10151642A1 (de) |
WO (1) | WO2003033787A2 (de) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3823984A1 (de) * | 1988-07-15 | 1990-01-18 | Schlafhorst & Co W | Verfahren zur aufloesung eines faserbandes |
DE4040102A1 (de) * | 1990-12-16 | 1992-06-17 | Fritz Stahlecker | Vorrichtung zum erspinnen eines fadens |
DE19608828A1 (de) * | 1996-03-07 | 1997-09-18 | Fritz Stahlecker | Vorrichtung zum Auflösen von Fasermaterial zu Einzelfasern |
-
2001
- 2001-10-11 DE DE2001151642 patent/DE10151642A1/de not_active Withdrawn
-
2002
- 2002-09-14 WO PCT/EP2002/010323 patent/WO2003033787A2/de not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
DE10151642A1 (de) | 2003-04-24 |
WO2003033787A3 (de) | 2003-09-12 |
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