EP0358722B1 - Needle ring with needles for the combing cylinders of an open-end spinning frame - Google Patents
Needle ring with needles for the combing cylinders of an open-end spinning frame Download PDFInfo
- Publication number
- EP0358722B1 EP0358722B1 EP88905654A EP88905654A EP0358722B1 EP 0358722 B1 EP0358722 B1 EP 0358722B1 EP 88905654 A EP88905654 A EP 88905654A EP 88905654 A EP88905654 A EP 88905654A EP 0358722 B1 EP0358722 B1 EP 0358722B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- needles
- needle
- section
- ring
- cross
- 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.)
- Expired - Lifetime
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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
- D01H4/32—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls using opening rollers
Definitions
- opening rollers for open-end spinning machines, namely those with an all-steel set and those with inserted needles.
- An all-steel set more or less corresponds to a punched, i.e. sharp-edged saw blade used in the grooves of the roller.
- the opening rollers with all-steel fittings have the advantage over the needle rollers that they can be used in almost all spinning boxes, even when heavily contaminated wool has to be spun, while the known needle rollers can only be used in the spinning boxes of some spinning machine manufacturers.
- the advantage of the needle rollers is that they have a considerably longer service life than the all-steel clothing rollers.
- Flattened needles used in pinstripes are used in the textile industry for combing fibers, i.e. for processing the fiber material before spinning. With this combing, the goods are pulled relatively slowly through the pinstripes serving as combs.
- the needle rollers of the open-end spinning machine which have been known for at least 20 years, rotate at a speed of approx. 8000 rpm, which means a peripheral speed of the order of 150 m / min. results.
- the new needling opening roller according to the present invention now has both the advantages of All-steel clothing rollers as well as the advantages of the previously known needle rollers, ie it can be used surprisingly and without special adaptation in all open-end spinning machines and it has at least the same service life as the previously known needle rollers.
- the needles do not have the round cross-section which is known and customary; their cross-section along the entire length of the needle either has a known oval shape or the shape of a rectangle with rounded corners or a shape lying between these two shapes, in other words the entire needles have a flattened cross-section and thus a lancet-like tip.
- the needles sit in round holes, the diameter of which is somewhat less than the width of the needles, but is a multiple of the needle thickness.
- FIGS. 1, 2 and 3 how the needles 1 are inserted into a needle ring 2 which is expediently made of aluminum or brass.
- the ring has, for example, an inner diameter of 50 mm and an outer diameter of 58 mm, that is to say a wall thickness of 4 mm, the needles being 1 7 mm long, that is to say 4 mm in the ring and projecting approximately 3 mm from the ring surface.
- the currently known needle rings are equipped with a few hundred needles, each of which has a circular cross section with a diameter of 0.8 mm, for example.
- the needle roller according to the present invention now does not contain needles with a circular cross section, as shown in FIG. 4 of the drawing, but needles with a flattened cross section.
- the cross section can thus either have an oval shape or the shape of a rectangle provided with rounded corners or a shape lying between these two shapes, the needle tip essentially having a lancet-like shape.
- Such needles are produced, for example, from sections of a round wire in that, as is known in the manufacture of needles, they are attached to them Sections on one side grind a tip. Subsequently, these needles are pressed so flat that their resulting width 1b reaches approximately 4 to 6 times the thickness 1a reduced by the pressing, as shown in FIG.
- the holes into which the needles are inserted are expediently bores 3 with a diameter 3a that is somewhat smaller than the width 1b of the flat-pressed needles, so that the needles 1 in these holes 3 can only be used after two grooves have been created in the wall of each hole by punching.
- These grooves are dimensioned such that the needles 1 have to be used with a certain amount of force, which has the consequence that the needles 1 are then captively locked in the bore 3 deformed in this way.
- the needle used fills the cross section of the bore 3 only to a fraction, so that there is an opening 3b on each side of each needle, which can not only be used for this, through an inside of the needle ring supplied air flow or a vacuum applied to the inside of the needle ring to control the air flow causing the fiber transport in the spinning unit, but also, if desired, to continuously or intermittently suck off fine dirt.
- Needle rings with lancet-like needle tips which are made from round needles by flat pressing, have the same good properties in terms of resolving power as that Because of their relatively short service life, unsuitable needle rings with inserted sawtooth strips.
- the needles have a completely different texture than the sawtooth strips, they have a considerably longer service life than the opening rollers provided with the sawtooth strips and are therefore also suitable for replacing them when there is no need for the possibility to use the control of the air flow.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Preliminary Treatment Of Fibers (AREA)
Abstract
Description
Für Offen-End-Spinn-Maschinen gibt es derzeit im wesentlichen zwei Sorten von Auflösewalzen, nämlich solche mit einer Ganzstahlgarnitur und solche mit eingesetzten Nadeln. Eine Ganzstahlgarnitur entspricht mehr oder weniger einem in Rillen der Walze eingesetzten, gestanzten, also scharfkantigen Sägeblatt.There are currently essentially two types of opening rollers for open-end spinning machines, namely those with an all-steel set and those with inserted needles. An all-steel set more or less corresponds to a punched, i.e. sharp-edged saw blade used in the grooves of the roller.
Die Auflösewalzen mit Ganzstahlgarnitur haben gegenüber den Nadelwalzen den Vorteil, dass sie sich in fast allen Spinnboxen verwenden lassen und zwar auch dann, wenn stark verunreinigte Wolle versponnen werden muss, während die bekannten Nadelwalzen sich nur in den Spinnboxen einiger Spinnmaschinenhersteller verwenden lassen. Der Vorteil der Nadelwalzen besteht darin, dass sie eine gegenüber den Ganzstahlgarniturenwalzen wesentlich längere Standzeit aufweisen.The opening rollers with all-steel fittings have the advantage over the needle rollers that they can be used in almost all spinning boxes, even when heavily contaminated wool has to be spun, while the known needle rollers can only be used in the spinning boxes of some spinning machine manufacturers. The advantage of the needle rollers is that they have a considerably longer service life than the all-steel clothing rollers.
Einerseits ist nun in einer Publikation in der Zeitschrift "Textilbetrieb" über ein Faserauflöseagregat für OE Rotorspinnsysteme zwar angegeben, dass sich Auflösewalzen mit Stahlnadeln in allen Rotorspinnmaschinen einsetzen lassen. Es wird aber einschränkend ausgeführt, dass es nötig sei, die möglichst ideale Anordnung der Nadeln hinsichtlich ihrer Anzahl wie auch der günstigsten Nadeldurchmesser, die richtige Nadelneigung und den optimalen Nadelvorsprung zu finden, wobei offenbar die Meinung ist, dass der Nadelquerschnitt rund zu sein habe. Andererseits sind aus der GB-A-2109831 bereits Nadeln zur Verwendung in an sich nicht speziell genannten Textilmaschinen beschrieben, deren Schaft einen nicht-runden Querschnitt aufweist - um dadurch die Lebensdauer der Nadeln zu vergrössern - und die in Löchern eines Nadelhalters eingesetzt sind, deren Kontur mit dem Querschnitt der Nadeln übereinstimmt. Des weitern sind aus der GB-A-287 325, also seit 40 Jahren, Nadeln bekannt, die im wesentlichen einen runden, in einem runden Loch steckenden Schaft aufweisen. Dabei ist die Nadel ab einem solchen Abstand vom Schaftende bis zur Nadelspitze abgeflacht, dass sie noch im Bereich des Loches eine Breite aufweist, die etwas grösser ist, als der Durchmesser dieses Loches, um sie mit Pressitz in dieses einschieben und somit befestigen zu können.On the one hand, a publication in the "Textilbetrieb" magazine about a fiber dissolving unit for OE rotor spinning systems now specifies that opening rollers with steel needles can be used in all rotor spinning machines. But it’s restrictive, that it was necessary to find the ideal arrangement of the needles in terms of their number, as well as the cheapest needle diameter, the correct needle inclination and the optimal needle projection, whereby the opinion is obviously that the needle cross-section should be round. On the other hand, from GB-A-2109831 needles have already been described for use in textile machines which are not specifically mentioned per se, the shaft of which has a non-round cross section - in order to thereby increase the life of the needles - and which are inserted into holes in a needle holder whose Contour matches the cross section of the needles. Furthermore, from GB-A-287 325, that is to say for 40 years, needles are known which essentially have a round shaft inserted into a round hole. The needle is flattened from such a distance from the end of the shaft to the tip of the needle that it still has a width in the area of the hole that is slightly larger than the diameter of this hole so that it can be press-fitted into it and thus fastened.
Abgeflachte, in Nadelstreifen eingesetzte Nadeln werden in der Textilindustrie zum Kämmen von Fasern, also zur Verarbeitung des Fasermaterials vor dem Spinnen verwendet. Bei diesem Kämmen wird die Ware verhältnismässig langsam durch die als Kämme dienenden Nadelstreifen gezogen. Im Unterschied dazu drehen sich die seit mindestens 20 Jahren bekannten Nadelwalzen der Offen-End-Spinn-Maschine mit einer Tourenzahl von ca. 8000 U/min., was eine Umfangsgeschwindigkeit in der Grössenordnung von 150m/min. ergibt.Flattened needles used in pinstripes are used in the textile industry for combing fibers, i.e. for processing the fiber material before spinning. With this combing, the goods are pulled relatively slowly through the pinstripes serving as combs. In contrast to this, the needle rollers of the open-end spinning machine, which have been known for at least 20 years, rotate at a speed of approx. 8000 rpm, which means a peripheral speed of the order of 150 m / min. results.
Die neue mit Nadeln versehene Auflösewalze nach der vorliegenden Erfindung weist nun sowohl die Vorteile der Ganzstahlgarniturenwalzen wie auch die Vorteile der bisher bekannten Nadelwalzen auf, d.h. sie lässt sich überraschenderweise und ohne spezielle Anpassung in allen Offen-End-Spinn-Maschinen verwenden und sie weist mindestens die gleiche Standzeit wie die bisher bekannten Nadelwalzen auf. Bei ihr weisen die Nadeln nicht den an sich bekannten und üblichen runden Querschnitt auf; ihr Querschnitt hat auf der ganzen Nadellänge entweder eine an sich bekannte ovale Form oder die Form eines mit abgerundeten Ecken versehenen Rechtecks oder eine zwischen diesen beiden Formen liegende Form, mit anderen Worten weisen die ganzen Nadeln einen abgeflachten Querschnitt auf und damit eine lanzettmesserartige Spitze. Ausserdem sitzen bei dem erfindunsgemässen Nadelring die Nadeln in runden Löchern, deren Durchmesser etwas geringer als die Breite der Nadeln ist, aber ein Mehrfaches der Nadeldicke beträgt.The new needling opening roller according to the present invention now has both the advantages of All-steel clothing rollers as well as the advantages of the previously known needle rollers, ie it can be used surprisingly and without special adaptation in all open-end spinning machines and it has at least the same service life as the previously known needle rollers. With her, the needles do not have the round cross-section which is known and customary; their cross-section along the entire length of the needle either has a known oval shape or the shape of a rectangle with rounded corners or a shape lying between these two shapes, in other words the entire needles have a flattened cross-section and thus a lancet-like tip. In addition, with the needle ring according to the invention, the needles sit in round holes, the diameter of which is somewhat less than the width of the needles, but is a multiple of the needle thickness.
Nachfolgend werden anhand der beiliegenden Zeichnung Ausführungsbeispiele der Erfindung beschrieben. In der Zeichnung zeigt
- die
Figur 1 - eine Seitenansicht eines Nadelrings einer Auflösewalze, wobei jedoch nur die sozusagen parallel zur Zeichnungsebene angeordneten Nadeln eingezeichnet sind,
- die
Figur 2 - die dazugehörige Seitenansicht, wobei jedoch nur eine einzige Nadel eingezeichnet ist,
- die
Figur 3 - das mit III bezeichnete Detail aus der
Figur 2, jedoch in grösserem Massstab, - die
Figur 4 - einen runden Nadelquerschnitt,
- die
Figur 5 - einen abgeflachten Nadelquerschnitt im Massstab der
Figur 4 und - die Figur 6
- eine Draufsicht auf die im Loch eingesetze Nadel in nochmals grösserem Massstab.
- the figure 1
- 2 shows a side view of a needle ring of an opening roller, but only the needles arranged parallel to the plane of the drawing, so to speak, are shown,
- the figure 2
- the associated side view, but only a single needle is shown,
- the figure 3
- the detail designated by III from FIG. 2, but on a larger scale,
- the figure 4
- a round needle cross-section,
- the figure 5
- a flattened needle cross-section on the scale of Figure 4 and
- the figure 6
- a plan view of the needle inserted in the hole on an even larger scale.
Aus den Figuren 1, 2 und 3 ist ersichtlich, wie die Nadeln 1 in einem zweckmässigerweise aus Aluminium oder Messing bestehenden Nadelring 2 eingesetzt sind. Der Ring hat beispielsweise einen Innendurchmesser von 50 mm und einen äusseren Durchmesser von 58 mm, also eine Wandstärke von 4 mm, wobei die Nadeln 1 7 mm lang sind, also 4 mm im Ring stecken und ca. 3 mm aus der Ringoberfläche vorstehen. Die derzeit bekannten Nadelringe sind mit einigen Hundert Nadeln ausgerüstet, die je einen kreisrunden Querschnitt mit beispielsweise einem Durchmesser von 0,8 mm aufweisen.It can be seen from FIGS. 1, 2 and 3 how the
Die Nadelwalze gemäss der vorliegenden Erfindung enthält nun nicht Nadeln mit einem kreisrunden Querschnitt, wie er in der Figur 4 der Zeichnung dargestellt ist, sondern Nadeln mit einem abgeflachten Querschnitt. Der Querschnitt kann also entweder etwa eine ovale Form oder die Form eines mit abgerundeten Ecken versehenen Rechtecks oder eine zwischen diesen beiden Formen liegende Form aufweisen, wobei die Nadelspitze im wesentlichen eine lanzettmesserartige Form besitzt. Derartige Nadeln werden beispielsweise aus Abschnitten eines runden Drahtes dadurch hergestellt, dass man, wie das bei der Herstellung von Nadeln bekannt ist, an diese Abschnitte an einer Seite eine Spitze anschleift. Nachher werden diese Nadeln so flach gepresst, dass ihre dadurch entstandene Breite 1b etwa das 4- bis 6-fache der durch das Pressen reduzierten Dicke 1a erreicht, wie das in der Figur 6 dargestellt ist, oder doch so, dass die längere Querschnittsachse 4 ungefähr dreimal so lang ist wie die kürzere Querschnittsachse 5, wie das in der Figur 5 gezeigt ist. Diese Nadeln 1 mit lanzettmesserartigen Spitzen sind nun so im Ring 2 angeordnet, dass die kürzere Achse 5 des Nadelquerschnitts zur Ringachse 2a parallel verläuft. Auch diese Nadeln haben, wie die Nadeln mit rundem Querschnitt, an der Spitze einen Winkel β von 15° - 45°. Die Nadeln 1 können an sich radial im Ring 2 sitzen oder sie können, wie das in der Zeichnung dargestellt ist, so im Ring 2 eingesetzt sein, dass ihre Achsen 1c am Nadelfuss mit dem Ringradius 2b am Nadelfuss einen Winkel α von bis zu 30° bilden.The needle roller according to the present invention now does not contain needles with a circular cross section, as shown in FIG. 4 of the drawing, but needles with a flattened cross section. The cross section can thus either have an oval shape or the shape of a rectangle provided with rounded corners or a shape lying between these two shapes, the needle tip essentially having a lancet-like shape. Such needles are produced, for example, from sections of a round wire in that, as is known in the manufacture of needles, they are attached to them Sections on one side grind a tip. Subsequently, these needles are pressed so flat that their resulting
Bei den Löchern, in die die Nadeln eingesetzt werden, handelt es sich, wie aus der Figur 6 ersichtlich ist, zweckmässigerweise um Bohrungen 3 mit einem Durchmesser 3a, der etwas kleiner ist als die Breite 1b der flachgepressten Nadeln, so dass die Nadeln 1 in diese Bohrungen 3 erst eingesetzt werden können, nachdem in die Wand jeder Bohrung durch Stanzen zwei Nuten erzeugt worden sind. Diese Nuten sind so bemessen, dass die Nadeln 1 mit einem gewissen Kraftaufwand eingesetzt werden müssen, was zur Folge hat, dass die Nadeln 1 dann in der so deformierten Bohrung 3 unverlierbar festsitzen. Beim Einsetzen der Nadeln 1 bzw. bereits beim Stanzen der Nuten, ist natürlich darauf zu achten, dass die Nadelbreitseite parallel zur Umfangsrichtung des Ringes 2 verläuft. Wie man aus der Figur 6 ersehen kann, füllt die eingesetzte Nadel den Querschnitt der Bohrung 3 nur zu einem Bruchteil aus, so dass beidseits jeder Nadel je eine Öffnung 3b vorhanden ist, die nicht nur dazu benützt werden kann, durch einen ins Innere des Nadelringes zugeführten Luftstrom oder einen ans Innere des Nadelringes angelegten Unterdruck den den Fasertransport im Spinnaggregat bewirkenden Luftstrom zu steuern, sondern gewünschten Falls auch dazu, feinen Schmutz kontinuierlich oder intermittierend abzusaugen. Abgesehen davon, dass sich mit den flachen Nadeln diese Möglichkeit der Luftstromsteuerung ergibt, lässt sich noch ein weiterer Vorteil erzielen: Nadelringe mit lanzettmesserartigen Nadelspitzen, die aus runden Nadeln durch Flachpressen hergestellt worden sind, haben die gleich guten Eigenschaften in bezug auf das Auflösevermögen wie die wegen ihrer verhältnismässig kurzen Standzeit an sich unzweckmässigen Nadelringe mit eingesetzten Sägezahnstreifen. Sie besitzen jedoch dank der Tatsache, dass die Nadeln eine völlig andere Textur als die Sägezahnstreifen aufweisen, eine wesentlich längere Standzeit als die mit den Sägezahnstreifen versehenen Auflösewalzen und eignen sich daher auch dann dazu, jene zu ersetzen, wenn kein Bedürfnis besteht, von der Möglichkeit der Steuerung des Luftstromes Gebrauch zu machen.As can be seen from FIG. 6, the holes into which the needles are inserted are expediently bores 3 with a diameter 3a that is somewhat smaller than the
Claims (1)
- Needle ring, provided with needles, for the combing cylinder of an open-end spinning machine, characterised thereby that the cross-section of the needles (1) has either an oval shape or the shape of a rectangle provided with rounded-off corners or else a shape lying between these two shapes, and that the needles sit in round holes (3), the diameter of which is somewhat smaller that the width (1b) of the needles, but amounts to a multiple of the needle thickness (1a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT88905654T ATE94918T1 (en) | 1987-08-03 | 1988-07-21 | NEEDED NEEDLE RING FOR THE OPENING ROLLER OF AN OPEN-END SPINNING MACHINE. |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH296787 | 1987-08-03 | ||
| CH2967/87 | 1987-08-03 | ||
| CH807/88 | 1988-03-03 | ||
| CH80788 | 1988-03-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0358722A1 EP0358722A1 (en) | 1990-03-21 |
| EP0358722B1 true EP0358722B1 (en) | 1993-09-22 |
Family
ID=25685746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP88905654A Expired - Lifetime EP0358722B1 (en) | 1987-08-03 | 1988-07-21 | Needle ring with needles for the combing cylinders of an open-end spinning frame |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5019110A (en) |
| EP (1) | EP0358722B1 (en) |
| JP (1) | JPH02500118A (en) |
| DE (1) | DE3884393D1 (en) |
| WO (1) | WO1989001064A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH681020A5 (en) * | 1990-04-30 | 1992-12-31 | Rieter Ag Maschf | |
| DE19531605C2 (en) * | 1995-08-28 | 2001-07-19 | Graf & Co Ag | Fixed comb for a combing machine |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US304208A (en) * | 1884-08-26 | Verviers | ||
| US1323885A (en) * | 1919-12-02 | Machine for treating wool | ||
| US1115990A (en) * | 1913-07-23 | 1914-11-03 | William R Brown | Fiber-cleaning apparatus. |
| GB287325A (en) * | 1927-03-29 | 1928-03-22 | Frank Holdsworth Bentham | Improvements in or connected with faller pins and bars for gill boxes and the like |
| US1944526A (en) * | 1932-03-04 | 1934-01-23 | Arthur J Perron | Shoddy-picker |
| US2028919A (en) * | 1934-06-27 | 1936-01-28 | W H Bagshaw Co | Textile picker |
| US2261452A (en) * | 1939-10-03 | 1941-11-04 | William Crabb & Company | Picker lag and pin |
| CH505919A (en) * | 1969-01-31 | 1971-04-15 | Chr Burckhardt Fa | Needle roller |
| DE3146006A1 (en) * | 1981-11-20 | 1983-06-01 | Staedtler & Uhl, 8540 Schwabach | NEEDLE FOR TEXTILE MACHINES AND DEVICE AND METHOD FOR THEIR PRODUCTION |
-
1988
- 1988-07-21 WO PCT/CH1988/000129 patent/WO1989001064A1/en active IP Right Grant
- 1988-07-21 JP JP63505828A patent/JPH02500118A/en active Pending
- 1988-07-21 US US07/353,638 patent/US5019110A/en not_active Expired - Fee Related
- 1988-07-21 DE DE88905654T patent/DE3884393D1/en not_active Expired - Fee Related
- 1988-07-21 EP EP88905654A patent/EP0358722B1/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| Textil Betrieb, vol. 96, no. 4, April 1978 "Ein qualifiziertes Faserauflöseaggregat für OE-Rotorspinnsysteme" pages 22-24, see page 23, column 1, lines 1-22. * |
Also Published As
| Publication number | Publication date |
|---|---|
| US5019110A (en) | 1991-05-28 |
| EP0358722A1 (en) | 1990-03-21 |
| JPH02500118A (en) | 1990-01-18 |
| DE3884393D1 (en) | 1993-10-28 |
| WO1989001064A1 (en) | 1989-02-09 |
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