EP0571322B1 - Apparatus for the continuous crimping of thermoplastic yarns - Google Patents
Apparatus for the continuous crimping of thermoplastic yarns Download PDFInfo
- Publication number
- EP0571322B1 EP0571322B1 EP93810310A EP93810310A EP0571322B1 EP 0571322 B1 EP0571322 B1 EP 0571322B1 EP 93810310 A EP93810310 A EP 93810310A EP 93810310 A EP93810310 A EP 93810310A EP 0571322 B1 EP0571322 B1 EP 0571322B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- stuffer box
- plug
- guide elements
- zone
- elements
- 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
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
- D02G1/12—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
- D02G1/12—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes
- D02G1/122—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes introducing the filaments in the stuffer box by means of a fluid jet
Definitions
- the invention is in the field of textile technology and relates to a device according to the preamble of the independent claim, which is used for the continuous crimping of threads made of a thermoplastic material.
- threads bunch of fibrils
- these are moved, for example with the aid of a hot conveying medium flowing under pressure, through a conveying channel, heated and then conveyed through a nozzle outlet opening into a stuffer box, the stuffer box being designed in such a way that the Pumped medium relaxes as it exits the nozzle outlet opening.
- the thread impinges in the stuffer box on a plug formed by a thread that has already emerged from the opening, whereby it is crimped.
- the plug is transported further and cooled at a speed which is lower than the thread speed in the conveying channel, in order to be broken down into a textured yarn in the further process.
- European Patent Specification No. 310890 by the same applicant describes a method and an apparatus for the continuous crimping of thermoplastic threads.
- the described embodiments of the device have a crimping nozzle with a conveying channel through which the thread is conveyed against a nozzle outlet opening with the aid of a flowing conveying medium, and a rotating plug conveying roller on which the plug is arranged between lateral guide means, for example rows, arranged around the circumference of the roller by radially arranged needles.
- the ruffling nozzle is arranged with the nozzle outlet opening against the plug conveyor roller and essentially tangentially to it.
- the plug Immediately outside the nozzle outlet opening, the plug is formed in a stuffer box formed by stationary guide means arranged in the region of the nozzle outlet opening and the lateral guide means moved on the plug conveyor roller.
- the plug that forms in this stuffer box is limited in such a way that it is arranged between the lateral guide means without touching the plug conveyor roller itself and without extending radially over these guide means.
- the plug emerging from the stuffer box is so stable that the axial guidance of the lateral guide means is sufficient for its further transport in the same position.
- the device for the continuous crimping of thermoplastic threads with regard to the ventilation of the stuffer box to improve.
- the device for operation and maintenance should not become more complex.
- the plug conveyor roller 1 shows a device for the continuous crimping of thermoplastic threads in a section perpendicular to the axis of a plug conveyor roller 1.
- the plug conveyor roller 1 carries lateral guide means around its circumference, for example two parallel rows of needles 2, one of which is visible in the figure and between which the Graft is positioned.
- the figure also shows a crimping nozzle 3 with a conveying channel and a nozzle outlet opening 4 and a guide fork (stationary guide means), for example molded onto the crimping nozzle 3 in the region of the nozzle outlet opening 4, which consists of a lower guide element 5 and an upper guide element 6.
- the plug feed roller 1 and the curling nozzle 3 are arranged in such a way that the two rows of needles 2 and the two guide elements 5 and 6 form a stuffer box that extends essentially tangentially to the plug-conveying roller 1 and that the two rows of needles 2 in the axial direction of the roller, the two guide elements 5 and 6 in the radial direction of the Limit the roller in such a way that the plug emerging from the stuffer box is spaced from the circumferential surface of the plug conveyor roller 1 and lies within the radial region of the rows of needles 2.
- the crimping takes place in three areas: first, the thread F is heated in the heating area A, then the plug is formed in the plug formation area B and guided under all-round guidance until it is stable enough for further process steps without all-round guidance via the plug transport area C. like cooling and grafting to be moved.
- the conveying channel represents the heating area A
- the stuffer box formed by the rows of needles 2 and the guide elements 5 and 6 represents the plug formation area B
- the channel connected to the upsetting chamber and formed by the rows of needles represents the plug transport area C.
- FIG 2 now shows the plug formation area B according to the prior art, as described in the already cited European Patent No. 310890.
- the figure shows a section through the stuffer box 7 according to the arrows II in Figure 1.
- the plug conveyor roller 1 with the two rows of needles 2 can be seen and between the two rows of needles 2 the two stationary guide elements 5.1 and 6.1.
- These are each in one piece and, as the delimitation of the stuffer box 7, represent compact surfaces which limit the freshly formed plug on two opposite sides.
- the plug is limited by the rows of needles 2.
- the one-piece guide elements represent an obstacle to the escaping medium and, through it, compact and stationary surfaces on which the plug rubs.
- FIG. 3 now shows the plug formation area of an exemplary embodiment of the device according to the invention.
- the stuffer box 7 is also laterally delimited by the two rows of needles 2, radially by a lower guide element 5.2 and an upper guide element 6.2.
- the guide elements 5.2 and 6.2 are broken through in the radial direction. This opens up more ways for the medium to relax in accordance with the arrows, so that it runs along with the graft over a shorter distance and this comes into contact with cool outside air more quickly.
- This interruption of the guiding surfaces also ensures that the conveying medium is routed in the same way on all sides and that the plug is cooled in the same way on all sides.
- the guide elements 5.2 and 6.2 consist of individual lamellae arranged next to one another parallel to the axis of the plug conveyor roller 1, with spaces being provided between the lamellae.
- This embodiment has the advantage that it is almost equivalent to the robustness of the embodiment according to the prior art. It turns out, however, that dirt can accumulate between the lamellae, especially in the areas of the interstices facing away from the plug, which must be removed regularly if the advantages of the perforated guide elements are to be preserved.
- FIG. 4 shows a further exemplary embodiment of the plug formation area of the device according to the invention. It has guide elements 5.3 and 6.3, which are designed as a series of needles. Since individual thread loops in the plug that is formed will also pass through between the needles and since these loops move along the needles in the interspaces, these interspaces are continuously cleaned, so that the disadvantage of the embodiment according to FIG. 3 is eliminated.
- the guide elements 5.3 and 6.3 are more sensitive to damage when threading and when removing the plug feed roller 1.
- FIG. 5 shows a further exemplary embodiment of the plug formation area of the device according to the invention.
- the guide elements 5.4 and 6.4 are formed by lamellae, the spaces between which widen away from the plug channel, in that the lamellae become correspondingly thinner. With this embodiment, a sufficient guidance of the plug can be ensured, nevertheless, in the areas of the interstices between the lamellae that are not automatically cleaned, the interstices are so wide that clogging due to contamination is unlikely.
- the illustrated embodiments of the device according to the invention merely represent examples. Further embodiments are conceivable in which the side walls of the stuffer box are not rows of needles but walls which are otherwise perforated. Furthermore, embodiments are conceivable in which only one of the guide elements is broken or both guide elements are broken in different ways. Other shapes of the guide element parts are also conceivable.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Description
Die Erfindung liegt auf dem Gebiete der Textiltechnik und betrifft eine Vorrichtung gemäss dem Oberbegriff des unabhängigen Patentanspruchs, die zum kontinuierlichen Kräuseln von Fäden aus einem thermoplastischen Material dient.The invention is in the field of textile technology and relates to a device according to the preamble of the independent claim, which is used for the continuous crimping of threads made of a thermoplastic material.
Zum kontinuierlichen Kräuseln von Fäden (Fibrillenbündeln) aus einem thermoplastischen Material werden diese beispielsweise mit Hilfe eines unter Druck strömenden, heissen Fördermediums durch einen Förderkanal bewegt, erhitzt und dann durch eine Düsenaustrittsöffnung in eine Stauchkammer gefördert, wobei die Stauchkammer derart gestaltet ist, dass sich das Fördermedium beim Austritt aus der Düsenaustrittsöffnung entspannt. Der Faden prallt in der Stauchkammer auf einen durch bereits aus der Öffnung ausgetretenen Faden gebildeten Pfropfen, wobei er gekräuselt wird. Der Pfropfen wird mit einer Geschwindigkeit, die kleiner ist als die Fadengeschwindigkeit im Förderkanal, weitertransportiert und abgekühlt, um im weiteren Verfahren zu einem texturierten Garn aufgelöst zu werden.For the continuous crimping of threads (bundles of fibrils) made of a thermoplastic material, these are moved, for example with the aid of a hot conveying medium flowing under pressure, through a conveying channel, heated and then conveyed through a nozzle outlet opening into a stuffer box, the stuffer box being designed in such a way that the Pumped medium relaxes as it exits the nozzle outlet opening. The thread impinges in the stuffer box on a plug formed by a thread that has already emerged from the opening, whereby it is crimped. The plug is transported further and cooled at a speed which is lower than the thread speed in the conveying channel, in order to be broken down into a textured yarn in the further process.
In der europäischen Patentschrift Nr. 310890 derselben Anmelderin sind beispielsweise ein Verfahren und eine Vorrichtung zum kontinuierlichen Kräuseln von thermoplastischen Fäden beschrieben. Die beschriebenen Ausführungsformen der Vorrichtung weisen eine Kräuseldüse mit einem Förderkanal auf, durch den der Faden mit Hilfe eines strömenden Fördermediums gegen eine Düsenaustrittsöffnung gefördert wird, und eine rotierende Pfropfenförderwalze, auf der der Pfropfen zwischen um den Umfang der Walze angeordneten, seitlichen Führungsmitteln, beispielsweise Reihen von radial angeordneten Nadeln, weitergefördert wird. Die Kräuseldüse ist mit der Düsenaustrittsöffnung gegen die Pfropfenförderwalze und im wesentlichen tangential an diese angeordnet. Unmittelbar ausserhalb der Düsenaustrittsöffnung, bildet sich in einer durch im Bereiche der Düsenaustrittsöffnung angeordnete, stationäre Führungsmittel und die auf der Pfropfenförderwalze bewegten seitlichen Führungsmittel gebildeten Stauchkammer der Pfropfen. Dabei ist der sich bildende Pfropfen in dieser Stauchkammer derart begrenzt, dass er sich zwischen den seitlichen Führungsmitteln anordnet, ohne die Pfropfenförderwalze selbst zu berühren und ohne sich radial über diese Führungsmittel zu erstrecken. Der aus der Stauchkammer austretende Pfropfen ist derart stabil, dass für seinen Weitertransport in derselben Lage die achsiale Führung der seitlichen Führungsmittel genügt.For example, European Patent Specification No. 310890 by the same applicant describes a method and an apparatus for the continuous crimping of thermoplastic threads. The described embodiments of the device have a crimping nozzle with a conveying channel through which the thread is conveyed against a nozzle outlet opening with the aid of a flowing conveying medium, and a rotating plug conveying roller on which the plug is arranged between lateral guide means, for example rows, arranged around the circumference of the roller by radially arranged needles. The ruffling nozzle is arranged with the nozzle outlet opening against the plug conveyor roller and essentially tangentially to it. Immediately outside the nozzle outlet opening, the plug is formed in a stuffer box formed by stationary guide means arranged in the region of the nozzle outlet opening and the lateral guide means moved on the plug conveyor roller. The plug that forms in this stuffer box is limited in such a way that it is arranged between the lateral guide means without touching the plug conveyor roller itself and without extending radially over these guide means. The plug emerging from the stuffer box is so stable that the axial guidance of the lateral guide means is sufficient for its further transport in the same position.
Es zeigt sich, dass es für die Qualität des erzeugten Garnes wichtig ist, dass sich das Fördermedium nach dem Austritt aus der Düsenaustrittsöffnung möglichst schnell entspannt, dass also die Stauchkammer möglichst gut entlüftet sein muss. Insbesondere bei hohen Fadengeschwindigkeiten kann die Entlüftung ungenügend sein und die Garnqualität negativ beeinflussen.It shows that it is important for the quality of the yarn produced that the conveyed medium relaxes as quickly as possible after exiting the nozzle outlet opening, that is to say that the stuffer box must be vented as well as possible. Especially at high thread speeds, the ventilation can be insufficient and negatively affect the yarn quality.
Es ist nun die Aufgabe der Erfindung, die Vorrichtung zum kontinuierlichen Kräuseln von thermoplastischen Fäden bezüglich der Entlüftung der Stauchkammer zu verbessern. Dabei soll die Vorrichtung für Betrieb und Unterhalt nicht aufwendiger werden.It is the object of the invention, the device for the continuous crimping of thermoplastic threads with regard to the ventilation of the stuffer box to improve. The device for operation and maintenance should not become more complex.
Diese Aufgabe wird gelöst durch die Vorrichtung gemäss dem kennzeichnenden Teil des unabhängigen Patentanspruches.This object is achieved by the device according to the characterizing part of the independent claim.
Beispielhafte Ausführungsformen der erfindungsgemässen Vorrichtung werden anhand der folgenden Figuren detailliert beschrieben. Dabei zeigen:
- Figur 1
- eine Vorrichtung zum kontinuierlichen Kräuseln von thermoplastischen Fäden, im Schnitt senkrecht zur Achse der Pfropfenförderwalze;
-
Figur 2 - die Stauchkammer gemäss dem Stande der Technik, als Schnitt parallel zur Achse der Pfropfenförderwalze;
- Figuren 3 bis 5
- verschiedene, beispielhafte Ausführungsformen der Stauchkammer der erfindungsgemässen Vorrichtung.
- Figure 1
- a device for the continuous crimping of thermoplastic threads, in section perpendicular to the axis of the plug conveyor roller;
- Figure 2
- the stuffer box according to the prior art, as a section parallel to the axis of the plug conveyor roller;
- Figures 3 to 5
- Various exemplary embodiments of the stuffer box of the device according to the invention.
Figur 1 zeigt eine Vorrichtung zur kontinuierlichen Kräuselung von thermoplastischen Fäden in einem Schnitt senkrecht zur Achse einer Pfropfenförderwalze 1. Die Pfropfenförderwalze 1 trägt um ihren Umfang seitliche Führungsmittel, beispielsweise zwei parallele Nadelreihen 2, von denen in der Figur die eine sichtbar ist und zwischen denen der Pfropfen positioniert ist. Aus der Figur ist ferner eine Kräuseldüse 3 ersichtlich mit einem Förderkanal und einer Düsenaustrittsöffnung 4 und eine im Bereiche der Düsenaustrittsöffnung 4 an die Kräuseldüse 3 beispielsweise angeformte Führungsgabel (stationäre Führungsmittel), die aus einem unteren Führungselement 5 und einem oberen Führungselement 6 besteht. Die Pfropfenförderwalze 1 und die Kräuseldüse 3 sind derart angeordnet, dass die beiden Nadelreihen 2 und die beiden Führungselemente 5 und 6 eine im wesentlichen tangential an die Pfropfenförderwalze 1 verlaufende Stauchkammer bilden, die die beiden Nadelreihen 2 in achsialer Richtung der Walze, die beiden Führungselemente 5 und 6 in radialer Richtung der Walze derart begrenzen, dass der aus der Stauchkammer austretende Pfropfen von der Umfangsfläche der Pfropfenförderwalze 1 beabstandet und innerhalb des radialen Bereiches der Nadelreihen 2 liegt. 1 shows a device for the continuous crimping of thermoplastic threads in a section perpendicular to the axis of a plug conveyor roller 1. The plug conveyor roller 1 carries lateral guide means around its circumference, for example two parallel rows of
Die Kräuselung läuft in drei Bereichen ab: zuerst wird der Faden F im Erhitzungsbereich A erhitzt, dann wird im Pfropfenbildungsbereich B der Pfropfen gebildet und unter allseitiger Führung solange geführt, bis er stabil genug ist, um ohne allseitige Führung über den Pfropfenweitertransportbereich C zu weiteren Verfahrensschritten wie Abkühlen und Pfropfenauflösung bewegt zu werden. Der Förderkanal stellt den Erhitzungsbereich A dar, die von den Nadelreihen 2 und den Führungselementen 5 und 6 gebildete Stauchkammer stellt den Pfropfenbildungsbereich B dar und der an die Stauchkammner anschliessende, durch die Nadelreihen gebildete Kanal stellt den Pfropfenweitertransportbereich C dar.The crimping takes place in three areas: first, the thread F is heated in the heating area A, then the plug is formed in the plug formation area B and guided under all-round guidance until it is stable enough for further process steps without all-round guidance via the plug transport area C. like cooling and grafting to be moved. The conveying channel represents the heating area A, the stuffer box formed by the rows of
Figur 2 zeigt nun den Pfropfenbildungsbereich B gemäss dem Stande der Technik, wie er beschrieben ist in der bereits zitierten europäischen Patentschrift Nr. 310890. Die Figur stellt einen Schnitt durch die Stauchkammer 7 gemäss den Pfeilen II in der Figur 1 dar. Aus der Figur ist wiederum die Pfropfenförderwalze 1 mit den zwei Nadelreihen 2 ersichtlich und zwischen den beiden Nadelreihen 2 die beiden stationären Führungselemente 5.1 und 6.1. Diese sind je einstückig und stellen als Abgrenzung der Stauchkammer 7 kompakte Flächen dar, die den frisch gebildeten Pfropfen auf zwei einander gegenüberliegenden Seiten begrenzen. Auf den anderen beiden Seiten wird der Pfropfen durch die Nadelreihen 2 begrenzt. Offensichtlich kann das Fördermedium in dieser Ausführungsform entsprechend den in der Figur angedeuteten Pfeilen zwischen den Nadeln der Nadelreihen 2 und durch die Zwischenräume zwischen Nadelreihen und stationären Führungselementen entweichen. Die einstückigen Führungselemente stellen ein Hindernis für das entweichende Medium und durch dieses erhitzte kompakte und stationäre Flächen dar, an denen sich der Pfropfen reibt. Figure 2 now shows the plug formation area B according to the prior art, as described in the already cited European Patent No. 310890. The figure shows a section through the
Figur 3 zeigt nun den Pfropfenbildungsbereich einer beispielhaften Ausführungsform der erfindungsgemässen Vorrichtung. Die Stauchkammer 7 wird auch hier seitlich durch die beiden Nadelreihen 2 begrenzt, radial durch ein unteres Führungselement 5.2 und ein oberes Führungselement 6.2. Die Führungslemente 5.2 und 6.2 sind im Gegensatz zu den Führungselementen der Figur 2 in radialer Richtung durchbrochen. Dadurch werden dem Medium entsprechend den Pfeilen mehr Wege zum sich Entspannen geöffnet, sodass es über eine kürzere Strecke mit dem Pfropfen mitläuft und dieser schneller mit kühler Aussenluft in Berührung kommt. Auch wird durch diese Unterbrechung der Führungsflächen eine allseitig gleichere Wegleitung des Fördermediums und dadurch eine allseitig gleichere Abkühlung des Pfropfens gewährleistet. Gleichzeitig werden durch die Unterbrechungen der Führungselemente die Reibflächen zwischen Pfropfen und Führungselementen und damit die mechanische Reibung reduziert. Die Führungselemente 5.2 und 6.2 bestehen aus einzelnen parallel zur Achse der Pfropfenförderwalze 1 nebeneinander angeordneten Lamellen, wobei zwischen den Lamellen Zwischenräume vorgesehen sind. Diese Ausführungsform hat den Vorteil, dass sie in bezug auf Robustheit der Ausführungsform gemäss dem Stande der Technik fast gleichwertig ist. Es zeigt sich aber, dass sich zwischen den Lamellen, insbesondere in den vom Pfropfen abgewandten Bereichen der Zwischenräume, Schmutz ablagern kann, der regelmässig entfernt werden muss, wenn die Vorteile der durchbrochenen Führungselemente gewahrt bleiben sollen. FIG. 3 now shows the plug formation area of an exemplary embodiment of the device according to the invention. The
Figur 4 zeigt eine weitere, beispielhafte Ausführungsform des Pfropfenbildungsbereiches der erfindungsgemässen Vorrichtung. Sie weist Führungselemente 5.3 und 6.3 auf, die als Reihe von Nadeln ausgeführt sind. Da einzelne Fadenschlaufen im sich bildenden Pfropfen auch zwischen den Nadeln durch reichen werden und da diese Schlaufen sich in den Zwischenräumen entlang den Nadeln bewegen, werden diese Zwischenräume kontinuierlich gereinigt, sodass der Nachteil der Ausführungsform gemäss Figur 3 ausgeschaltet ist. Dafür sind die Führungselemente 5.3 und 6.3 empfindlicher gegen Beschädigungen beim Fadeneinziehen und beim Demontieren der Pfropfenförderwalze 1. FIG. 4 shows a further exemplary embodiment of the plug formation area of the device according to the invention. It has guide elements 5.3 and 6.3, which are designed as a series of needles. Since individual thread loops in the plug that is formed will also pass through between the needles and since these loops move along the needles in the interspaces, these interspaces are continuously cleaned, so that the disadvantage of the embodiment according to FIG. 3 is eliminated. For this purpose, the guide elements 5.3 and 6.3 are more sensitive to damage when threading and when removing the plug feed roller 1.
Figur 5 zeigt eine weitere, beispielhafte Ausführungsform des Pfropfenbildungsbereiches der erfindungsgemässen Vorrichtung. In dieser Ausführungsform sind die Vorteile der beiden Ausführungsformen gemäss Figuren 3 und 4 kombiniert. Die Führungselmente 5.4 und 6.4 werden gebildet durch Lamellen, deren Zwischenräume vom Pfropfenkanal weg breiter werden, dadurch dass die Lamellen entsprechend dünner werden. Durch diese Ausführungsform kann eine genügende Führung des Pfropfens gewährleistet werden, wobei trotzdem in den nicht automatisch gereinigten Bereichen der Lamellenzwischenräume diese derart breit sind, dass eine Verstopfung durch Verschmutzungen unwahrscheinlich wird. FIG. 5 shows a further exemplary embodiment of the plug formation area of the device according to the invention. In this embodiment, the advantages of the two embodiments according to FIGS. 3 and 4 are combined. The guide elements 5.4 and 6.4 are formed by lamellae, the spaces between which widen away from the plug channel, in that the lamellae become correspondingly thinner. With this embodiment, a sufficient guidance of the plug can be ensured, nevertheless, in the areas of the interstices between the lamellae that are not automatically cleaned, the interstices are so wide that clogging due to contamination is unlikely.
Die dargestellten Ausführungsformen der erfindungsgemässen Vorrichtung stellen lediglich Beispiele dar. Es sind weitere Ausführungsformen denkbar, in denen die Seitenwände der Stauchkammer keine Nadelreihen sondern andersartig durchbrochene Wandungen sind. Ferner sind Ausführungsformen denkbar, in denen nur das eine der Führungselemente durchbrochen ist oder beide Führungselemente in verschiedener Art durchbrochen sind. Es sind auch andere Formgebungen der Führungselement-Teile denkbar.The illustrated embodiments of the device according to the invention merely represent examples. Further embodiments are conceivable in which the side walls of the stuffer box are not rows of needles but walls which are otherwise perforated. Furthermore, embodiments are conceivable in which only one of the guide elements is broken or both guide elements are broken in different ways. Other shapes of the guide element parts are also conceivable.
Claims (6)
- An apparatus for the continuous crimping of thermoplastic yarns, comprising a crimping nozzle (2) with a conveying duct and a nozzle outlet opening (4) and a guiding fork which is arranged in the zone of the nozzle outlet opening (4) and consists of a lower (5) and an upper guide element (6) as well as a plug conveying roller (1) with two lateral guide means (2) extending parallel around the circumference thereof, with a stuffer box (7) being enclosed by the lateral guide means (2) and the two guide elements (5 and 6) in a plug formation zone (B), characterized in that for improving the ventilation of the stuffer box (7) at least one of the guide elements (5 or 6) consists of a plurality of elements which are mutually distanced, with the intermediate spaces between said elements being slots which are open on the side of the guide elements which is averted from the nozzle outlet opening.
- An apparatus as claimed in claim 1, characterized in that the slots are aligned parallel to the direction of a tangent line at the circumference of the plug conveying roller (1).
- An apparatus as claimed in one of the claims 1 or 2, characterized in that the two guide elements (5, 6) consist of individual elements which are mutually distanced.
- An apparatus as claimed in one of the claims 1 to 3, characterized in that the individual parts of the guide element or the guide elements (5.2, 6.2) are lamellae which are arranged mutually adjacent in such a way that their narrow sides form the limitation of the stuffer box (7).
- An apparatus as claimed in claim 4, characterized in that the lamellae are thicker in the zone of the stuffer box (7) than in the zone which is averted from the stuffer box (7), whereas the intermediate spaces between the lamellae in the zone of the stuffer box are narrower than in the zone which is averted from the stuffer box.
- An apparatus as claimed in one of the claims 1 to 3, characterized in that at least one of the guide elements (5.3, 6.3) consists of a number of needles which are arranged mutually adjacent at a distance.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH161392 | 1992-05-20 | ||
| CH1613/92 | 1992-05-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0571322A1 EP0571322A1 (en) | 1993-11-24 |
| EP0571322B1 true EP0571322B1 (en) | 1996-09-25 |
Family
ID=4214539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93810310A Expired - Lifetime EP0571322B1 (en) | 1992-05-20 | 1993-04-28 | Apparatus for the continuous crimping of thermoplastic yarns |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5365644A (en) |
| EP (1) | EP0571322B1 (en) |
| JP (1) | JPH0610223A (en) |
| DE (1) | DE59303929D1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6311375B1 (en) * | 2000-07-27 | 2001-11-06 | Gilbert Patrick | Method of needle punching yarns |
| DE102014002318A1 (en) * | 2014-02-19 | 2015-08-20 | Oerlikon Textile Gmbh & Co. Kg | Device for crimping multifilament threads |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU502983A1 (en) * | 1973-02-09 | 1976-02-15 | Феб Шпинераймашиненбау Карл-Марксштадт (Инопредприятие) | Apparatus for producing high yarns |
| DE2507752A1 (en) * | 1975-02-22 | 1976-08-26 | Karlsruhe Augsburg Iweka | METHOD OF CURLING ARTIFICIAL FEEDS |
| US4450607A (en) * | 1975-10-02 | 1984-05-29 | Allied Corporation | Method for texturizing continuous filaments |
| DE2631393C3 (en) * | 1976-07-13 | 1984-09-20 | Bayer Ag, 5090 Leverkusen | Nozzle device for the production of textured filament yarns |
| JP2688428B2 (en) * | 1987-10-05 | 1997-12-10 | マシーネンファブリク リーター アクチェンゲゼルシャフト | Method and apparatus for continuous crimping of thermoplastic filaments |
-
1993
- 1993-04-28 EP EP93810310A patent/EP0571322B1/en not_active Expired - Lifetime
- 1993-04-28 DE DE59303929T patent/DE59303929D1/en not_active Expired - Fee Related
- 1993-05-13 JP JP5111519A patent/JPH0610223A/en active Pending
- 1993-05-19 US US08/063,324 patent/US5365644A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE59303929D1 (en) | 1996-10-31 |
| EP0571322A1 (en) | 1993-11-24 |
| JPH0610223A (en) | 1994-01-18 |
| US5365644A (en) | 1994-11-22 |
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