EP1587974A1 - Vorrichtung zum herstellen eines gesponnenen fadens - Google Patents
Vorrichtung zum herstellen eines gesponnenen fadensInfo
- Publication number
- EP1587974A1 EP1587974A1 EP03788962A EP03788962A EP1587974A1 EP 1587974 A1 EP1587974 A1 EP 1587974A1 EP 03788962 A EP03788962 A EP 03788962A EP 03788962 A EP03788962 A EP 03788962A EP 1587974 A1 EP1587974 A1 EP 1587974A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- channel
- fiber
- edge
- delivery
- thread
- 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
- 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
- D01H4/38—Channels for feeding fibres to the yarn forming region
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H1/00—Spinning or twisting machines in which the product is wound-up continuously
- D01H1/11—Spinning by false-twisting
- D01H1/115—Spinning by false-twisting using pneumatic means
-
- 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
- D01H4/02—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 imparting twist by a fluid, e.g. air vortex
Definitions
- the invention relates to a device for producing a spun thread from a staple fiber assembly supplied by a pair of delivery rollers to an air nozzle unit, with a fiber conveying channel arranged downstream of the delivery roller pair and having an inlet opening and an outlet opening, which is provided with a deflecting edge, which is otherwise essentially flat and essentially parallel contains the fiber guide surface running to the clamping line of the pair of delivery rollers, which ends in a swirl chamber following the outlet opening in the region of an inlet opening of a thread take-off channel with a fiber delivery edge serving to stop the twist.
- a device of this type is known from WO 02/24993 A2.
- a staple fiber structure coming from a drafting device or another drafting unit is guided through a fiber conveying channel to the inlet opening of a thread take-off channel, the front ends of the fibers held in the staple fiber structure being first guided into the thread take-off channel, while the rear free fiber ends are spread apart and captured by the vortex flow and are rotated around the integrated front ends already located in the inlet opening of the thread take-off channel, whereby a thread is produced with a largely real rotation.
- the terms “front” and “rear” ends of the fibers refer to the direction of transport of the staple fiber structure.
- the invention is based on the object of largely avoiding the fluctuations in mass in a device of the type mentioned above and thereby increasing the spinning speed with sufficient thread quality.
- the object is achieved in that the fiber guide surface becomes increasingly narrow due to lateral boundary walls of the fiber conveying channel and at the latest has its smallest width at the deflection edge.
- the fiber feed channel narrows relatively quickly, so that the smallest width is already reached at the deflecting edge of the fiber guide surface.
- This width is essentially maintained up to the fiber delivery edge and leads to the fact that the fibers to be spun reach the thread take-off channel largely loss-free through the inlet opening. This not only leads to an increase in thread quality, but also allows significantly higher delivery speeds and spinning speeds.
- the device according to the invention can be further developed such that the fiber guide surface already has at least approximately its smallest width at an inlet edge arranged upstream of the deflection edge.
- This smallest width of the fiber guiding surface should correspond to at most three times the diameter of the inlet opening of the thread take-off channel, preferably even only at most twice this diameter.
- FIG. 1 shows an axial section through a device according to the invention in approximately ten times magnification
- FIG. 2 shows a cross section through a nozzle body of the air nozzle unit along the sectional area II-II of FIG. 1,
- FIG. 3 shows an axial section along the sectional area III-III of FIG. 1,
- FIG. 4 shows an axial section similar to FIG. 3 in a differently designed device
- Figure 5 is a view in the direction of arrow V of Figure 1 of the inlet opening of the fiber feed channel.
- the device according to FIGS. 1 to 3 and 5 contains a delivery device 1 for supplying a staple fiber dressing 2 to be spun and an air nozzle unit 3 in which the staple fiber dressing 2 is given the rotation required for spinning a thread 4.
- the delivery device 1 contains a pair of delivery rollers 5, 6, which is arranged at a short distance from the air nozzle unit 3 and which can be the output rollers of an otherwise not shown drafting system.
- a drafting device warps a supplied sliver or a roving into a staple fiber dressing 2 of the desired fineness.
- the delivery device 1 can alternatively be a pair of clamping rollers of another drafting device or another upstream unit.
- 7 designates a clamping line on which the staple fiber dressing 2 fed in the direction of delivery A is held clamped before it enters the air nozzle unit 3.
- the air nozzle unit 3 produces the rotation of the thread 4 to be spun and delivers the thread 4 in the thread take-off direction B by means of a pair of take-off rollers, not shown.
- the air nozzle unit 3 contains, among other things, a nozzle body 8 with a fiber conveying channel 9 and a swirl chamber 10.
- a fluid device generates a swirl flow in the swirl chamber 10 by blowing in compressed air through compressed air channels 11 opening tangentially into the swirl chamber 10.
- the compressed air emerging from the mouths of the compressed air channels 11 is discharged via an exhaust air channel 12, which has an annular cross section around a spindle-shaped stationary component 13, which in turn encloses a thread take-off channel 14
- a fiber delivery edge 16 of a fiber guiding surface 17 is arranged as a swirl barrier, which is arranged eccentrically to the thread withdrawal channel 14 in the region of its inlet opening 18.
- the fibers to be spun are held on the one hand in the staple fiber structure 2 and thus guided into the thread take-off channel 14 from the outlet opening 15 of the fiber conveying channel 9 essentially without imparting rotation.
- the fibers in the area between the fiber feed channel 9 and the thread take-off channel 14 are exposed to the effect of the vortex flow, through which they or at least their end areas are driven radially away from the inlet opening 18 of the thread take-off channel 14.
- the threads 4 produced with the described method therefore show a core of fibers or fiber regions running essentially in the longitudinal direction of the thread without substantial rotation and an outer region in which the fibers or fiber regions are rotated around the core.
- this thread structure comes about because leading ends of fibers, in particular those whose trailing areas are still kept upstream in the fiber conveying channel 9, essentially reach the thread draw-off channel 14 directly, but trailing fiber areas, especially if they are in the entrance area of the fiber feed channel 9 can no longer be held, pulled out of the staple fiber structure 2 by the formation of eddies and then rotated around the thread 4 that is formed.
- fibers are integrated at the same time both in the thread 4 being formed, as a result of which they are drawn through the thread take-off channel 14, and also exposed to the vortex flow, which accelerates them centrifugally, i.e.
- the fiber areas drawn by the vortex flow from the staple fiber assembly 2 form a fiber swirl opening into the inlet opening 18 of the thread take-off channel 14, the longer portions of which spiral around the spindle-shaped component 13 and are drawn in this spiral against the force of the flow in the exhaust air channel 12 against the inlet opening 18 of the thread take-off channel 14.
- FIGS. 1 to 3 and 5 there are a total of four compressed air channels 11 per air nozzle unit 3, each of which is incorporated into the nozzle body 8.
- An annular space 19 radially surrounding the nozzle body 8 is connected to a compressed air source in a manner not shown. The compressed air then passes from the annular space 19 to the individual compressed air channels 11 via recesses 20 of the nozzle body 8, which are machined into the outer contour.
- the annular space 19 is sealed to the outside by a wall of a housing 21.
- the fiber feed channel 9 contains an inlet opening 22 which, according to FIG. 5, has a greater width parallel to the clamping line 7 of the pair of delivery rollers 5, 6 than transversely to it. This takes account of the fact that the staple fiber dressing 2 entering the air nozzle unit 3 has its greater width along the clamping line 7.
- the staple fiber structure 2 is guided along a fiber guide surface 17 which has a deflection edge 23 on its way. This already leads to a certain loosening of the conveyed staple fiber dressing 2 before it still runs a little over the fiber guide surface 17 after it emerges from the outlet opening 15 of the fiber conveying channel 9 and ends immediately in front of the inlet opening 18 of the thread withdrawal channel 14 at a so-called fiber delivery edge 16, which acts as a spin stop.
- This twist stop is important so that the rotation imparted to the thread 4 does not run back to the clamping line 7 of the pair of delivery rollers 5, 6.
- lateral boundary walls 24 and 25 are provided in the fiber conveying channel 9, as can be seen particularly in FIG. 3, as a result of which the fiber guide surface 17 becomes increasingly narrow and at the latest at the deflection edge 23 already has its smallest width.
- This configuration largely avoids the disadvantageous thick spots inherent in the prior art mentioned at the outset, so that higher spinning and delivery speeds are also possible.
- the fiber guide surface 17 can already have at least approximately its smallest width at an inlet edge 26 arranged upstream of the deflection edge 23.
- This smallest width should expediently be such that it only corresponds to two to three times the diameter of the inlet opening 18 of the thread take-off channel 14.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10304823 | 2003-01-31 | ||
DE2003104823 DE10304823A1 (de) | 2003-01-31 | 2003-01-31 | Vorrichtung zum Herstellen eines gesponnenen Fadens |
PCT/EP2003/011768 WO2004067820A1 (de) | 2003-01-31 | 2003-10-24 | Vorrichtung zum herstellen eines gesponnenen fadens |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1587974A1 true EP1587974A1 (de) | 2005-10-26 |
EP1587974B1 EP1587974B1 (de) | 2009-03-04 |
Family
ID=32695205
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03788962A Expired - Lifetime EP1587974B1 (de) | 2003-01-31 | 2003-10-24 | Vorrichtung zum herstellen eines gesponnenen fadens |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1587974B1 (de) |
JP (1) | JP4263177B2 (de) |
AU (1) | AU2003293622A1 (de) |
DE (2) | DE10304823A1 (de) |
WO (1) | WO2004067820A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103924333B (zh) * | 2014-04-17 | 2016-02-03 | 江阴市华方新技术科研有限公司 | 一种纱线导引装置 |
ITUA20163006A1 (it) * | 2016-04-29 | 2017-10-29 | Savio Macch Tessili Spa | Dispositivo di filatura di tipo air-jet |
EP3859061A1 (de) * | 2020-01-30 | 2021-08-04 | Saurer Intelligent Technology AG | Faserbandaufnahmeeinrichtung |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51130334A (en) * | 1975-05-06 | 1976-11-12 | Murata Machinery Ltd | Apparatus for making spun yarns |
US4986066A (en) * | 1988-12-19 | 1991-01-22 | Burlington Industries, Inc. | Vacuum spinning nozzle assembly |
JP2708000B2 (ja) * | 1995-02-10 | 1998-02-04 | 村田機械株式会社 | 紡績装置 |
EP0990719B1 (de) * | 1998-10-02 | 2003-05-28 | W. SCHLAFHORST AG & CO. | Spinnvorrichtung |
US6679044B2 (en) * | 2000-12-22 | 2004-01-20 | Maschinenfabrik Rieter Ag | Pneumatic spinning apparatus |
-
2003
- 2003-01-31 DE DE2003104823 patent/DE10304823A1/de not_active Withdrawn
- 2003-10-24 AU AU2003293622A patent/AU2003293622A1/en not_active Abandoned
- 2003-10-24 JP JP2004567290A patent/JP4263177B2/ja not_active Expired - Fee Related
- 2003-10-24 DE DE50311255T patent/DE50311255D1/de not_active Expired - Lifetime
- 2003-10-24 WO PCT/EP2003/011768 patent/WO2004067820A1/de active Application Filing
- 2003-10-24 EP EP03788962A patent/EP1587974B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO2004067820A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2004067820A1 (de) | 2004-08-12 |
DE10304823A1 (de) | 2004-08-12 |
EP1587974B1 (de) | 2009-03-04 |
JP4263177B2 (ja) | 2009-05-13 |
JP2006514166A (ja) | 2006-04-27 |
DE50311255D1 (de) | 2009-04-16 |
AU2003293622A1 (en) | 2004-08-23 |
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