EP3812491B1 - Condensing guide for a drafting frame of a spinning machine and drafting frame - Google Patents
Condensing guide for a drafting frame of a spinning machine and drafting frame Download PDFInfo
- Publication number
- EP3812491B1 EP3812491B1 EP20202675.3A EP20202675A EP3812491B1 EP 3812491 B1 EP3812491 B1 EP 3812491B1 EP 20202675 A EP20202675 A EP 20202675A EP 3812491 B1 EP3812491 B1 EP 3812491B1
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- European Patent Office
- Prior art keywords
- compacting
- sliver
- suction
- guide roller
- roller
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- 238000009987 spinning Methods 0.000 title claims description 11
- 239000000835 fiber Substances 0.000 claims description 19
- 238000007378 ring spinning Methods 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims 2
- 230000006835 compression Effects 0.000 description 48
- 238000007906 compression Methods 0.000 description 48
- 238000005056 compaction Methods 0.000 description 25
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000003993 interaction Effects 0.000 description 4
- 206010020112 Hirsutism Diseases 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000000284 resting effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
- D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
- D01H5/70—Constructional features of drafting elements
- D01H5/72—Fibre-condensing guides
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
- D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
- D01H5/26—Drafting machines or arrangements without fallers or like pinned bars in which fibres are controlled by one or more endless aprons
Definitions
- the invention relates to a compression device for a drafting system of a spinning machine, in particular a ring spinning machine, for compacting a drawn sliver, with a compression zone in which a suction flow is generated perpendicular to the fiber transport direction by means of a suction opening.
- Drafting systems for spinning machines are known in various designs from the prior art. Their task is to stretch or distort a sliver fed to the drafting system, thereby reducing the cross-section of the fibers. In order to produce a uniform sliver, which is necessary for the formation of a uniform yarn, the fibers must be moved next to each other as evenly as possible during the draft.
- spinning machines especially ring spinning machines, in which a twisting element is directly connected to the drafting system
- a so-called spinning triangle is formed on the pair of output rollers of the drafting system.
- This spinning triangle has a significantly higher width than the resulting thread and has edge fibers that are not properly integrated into the resulting thread and therefore do not contribute to the strength of the thread to be spun.
- Known compression devices of the type mentioned are usually designed to act pneumatically. It is already known that slivers are summarized by suction on a perforation track extending along the fiber path, which passage opening is permeable to the suction flow through which air is sucked in by means of suction.
- the perforation tracks extend in the transport direction of a compaction belt, which is arranged circumferentially around a suction opening of a suction shoe.
- the compression strap can be formed from a close-meshed fabric which has a plurality of through openings that are permeable to the suction flow, in which case the suction shoe in the area of the suction opening has a narrow slot which delimits the suction opening and extends in the transport direction, via which only the Suction pull acts on the sliver and compresses it
- the DE 198 37 181 A1 , the JP 2018 035463 A , the DE 100 16 655 A1 , the DE 100 56 185 A1 , and the DE 10 2012 106781 A1 each disclose a compression device, the compression zone of which is delimited on the outlet side by a clamping point formed by a clamping roller. This is intended to ensure that the compaction effect is not lost before the spinning twist is applied.
- the object of the invention is to provide a compaction device and a drafting system for a compaction device, which enables the production of a uniform yarn.
- the invention solves the problem by a compaction device with the features of claim 1 and a drafting system with the features of claim 6.
- Characteristic of the compression device according to the invention is a compression element with a guide roller, which can be arranged in the area of the compression zone opposite the suction opening so that it can be rotated in the fiber transport direction, so that the sliver comes into engagement with the guide roller.
- the guide roller in engagement with the sliver pushes the sliver in the direction of the suction opening.
- the rotatability of the guide rollers prevents this a grinding of the sliver over the contact surface of the guide roller, which would negatively affect the yarn quality.
- the guide roller forms a fiber guide, which moves in the transport direction of the sliver due to its rotational movement.
- the fiber guidance provided by the guide roller enables the production of slivers with only small thick and thin areas.
- the sliver produced with the compression device according to the invention enables the production of a yarn with a particularly high level of uniformity, strength and less hairiness, which results in particular from the fact that the sliver is also guided in the compression zone.
- the compaction device comprises a suction shoe having the suction opening, a compression belt wrapping around an output upper roller and the suction shoe in the area of the suction opening with defined through openings permeable to the suction flow and an output lower roller resting against the compression belt in the area of the output upper roller.
- the guide roller can be arranged in the area of the suction shoe relative to the compression strap so that it can be rotated in the circumferential direction of the compression apron, so that the sliver comes into engagement with the guide roller.
- the direction of rotation of the compression belt determines the direction of fiber transport and the compression zone is in the area of the suction shoe.
- the guide roller in engagement with the sliver presses the sliver in the area in front of the pair of output rollers of the compression device formed from the output top roller and output bottom roller, the sliver against the compaction belt, whereby reliable fiber guidance in front of the pair of output rollers is achieved, which in particular is not possible from only a short one guided stretch of the sliver between the output roller pair and the pair of rollers of the drafting system upstream of the output roller pair. So that we guide the sliver essentially over its entire transport length through the compaction device, this taking place first in the area of the suction shoe via the guide roller and then via the pair of output rollers. This further supports the production of a yarn with a particularly high level of uniformity, strength and less hairiness.
- the design of the storage of the compression element carrying the guide roller as well The mounting of the guide roller on the compression element is fundamentally freely selectable. It is therefore possible to arrange the compression element in a stationary manner with a constant pressure force acting on the sliver relative to the suction opening or relative to the compression strap. According to an advantageous embodiment of the invention, however, it is provided that the compression element and/or the guide roller are mounted so that they can be adjusted in the direction of the suction opening or the compression strap.
- the pressure force between the guide roller and the compaction strap in a manner optimal for fiber guidance by adjusting the guide roller on the compression element and/or by adjusting the compression element in the direction of the suction opening.
- the pressure force can be reduced by increasing the distance or the pressure force can be increased by reducing the distance, whereby manufacturing tolerances can be compensated for and adjustments to the strength of the slivers can be made in a particularly convenient manner.
- the compression element carrying the guide roller has a support body which is mounted in a longitudinally displaceable manner in the direction of the suction opening.
- the support body with which the guide roller is supported relative to the compression belt can be adjusted in its distance from the compression belt and fixed in the set position.
- the design of the displaceability of the support body is fundamentally freely selectable. According to an advantageous embodiment, however, it is provided that the support body is mounted in a longitudinally displaceable manner on a support rail which extends in the direction of the suction opening.
- the use of a support rail which is designed in such a way that the support body can only be moved in the longitudinal axis direction of the support rail and transverse movements due to the Design of the connection between the support body and the support rail are blocked, improves the displaceability and positionability of the guide roller relative to the compression belt in a complementary manner. Misalignments of the guide roller relative to the compression strap can be avoided particularly reliably due to the interaction of the support body with the support rail, whereby the yarn quality can be guaranteed in a particularly reliable manner.
- the guide roller is coupled to a drive unit that drives it.
- a drive unit makes it possible to adjust the guide roller independently of the transport speed of the sliver and its interaction with the guide roller.
- a drivable guide roller Using a drivable guide roller, relative movements of the sliver relative to the contact surface of the guide roller that is in contact with the sliver can be avoided in a particularly reliable manner, which enables the production of a yarn with a particularly high quality.
- the drafting system according to the invention has a compaction device according to one or more of the above embodiments.
- the existing pair of output rollers of the drafting system forms the compaction device, so that the drafting system can be designed to be particularly simple and compact.
- the compaction belt runs around the output top roller of the drafting system and the suction shoe, so that a separate pair of output rollers forming the compaction device can be dispensed with.
- the output roller pair of the compaction device is connected to the drafting roller pairs, whereby these can also be made particularly compact together as a structural unit.
- a drafting system 2 equipped with a compaction device 1 is shown.
- the drafting system 2 has two first, second and third pairs of rollers 15, 16, 17 arranged at a distance from one another, between which a sliver passed between the rollers of the pairs of rollers 15, 16, 17 is stretched due to different rotational speeds of the pairs of rollers 15, 16, 17 or is distorted.
- Downstream of the third pair of rollers 17 is the compaction device 1, which also has two pairs of output rollers 18 arranged at a distance next to one another, each consisting of an output upper roller 7 and an output lower roller 8.
- the compaction device 1 also has two suction shoes 3 arranged at a distance from one another in the area between the output roller pairs 18 and the third roller pairs 17.
- the suction shoes 3 are connected via suction pipes 13 to a suction device, not shown here, and each have a suction opening 4 directed in the direction of the sliver to be fed through.
- the output top rollers 7 and the suction shoes 3 are each wrapped by a compaction belt 5 in such a way that it covers the suction opening 4.
- the compression belt 5 has a plurality of through openings arranged one behind the other in the transport direction and forming a perforation 6.
- the perforation 6 allows the suction flow provided by the suction device at the suction openings 4 of the suction shoes 3 to pass through, whereby the fibers of the stretched sliver are moved transversely to the transport direction towards the perforation 6 during the passage through the compaction device 1 and are thereby compacted.
- the drafting system 2 has a compression element 9, which has two guide rollers 10 rotatably mounted on a support body 11.
- the guide rollers 10 lie - in the transport direction of the sliver in front of the output roller pair 18 - in the area of the suction shoe 3 on the compression apron 5 and thereby press the stretched sliver against the compression apron 5, whereby good fiber guidance is achieved.
- the support body 11 is mounted on a support rail 12 in a longitudinally adjustable manner in the direction of the compaction straps 5 and can be fixed in the set position via an elongated hole 14.
- the fiber guidance generated by the guide roller 10 and the compression strap 5 can be conveniently adapted to, for example, manufacturing tolerances and different thicknesses of the slivers.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Description
Die Erfindung betrifft eine Verdichtungsvorrichtung für ein Streckwerk einer Spinnmaschine, insbesondere Ringspinnmaschine, zur Verdichtung eines verstreckten Faserbandes, mit einer Verdichtungszone, in der mittels einer Saugöffnung eine Saugströmung senkrecht zur Fasertransportrichtung erzeugt wird.The invention relates to a compression device for a drafting system of a spinning machine, in particular a ring spinning machine, for compacting a drawn sliver, with a compression zone in which a suction flow is generated perpendicular to the fiber transport direction by means of a suction opening.
Streckwerke für Spinnmaschinen, insbesondere Ringspinnmaschinen sind in vielfältigen Ausgestaltungen aus dem Stand der Technik bekannt. Ihre Aufgabe besteht darin, ein dem Streckwerk zugeführtes Faserband zu verstrecken, bzw. zu verziehen, wodurch eine Querschnittsreduzierung der Fasern bewirkt wird. Zur Herstellung eines gleichmäßigen Faserbandes, welches für die Bildung eines gleichmäßigen Garns erforderlich ist, müssen die Fasern dabei während des Verzugs möglichst gleichmäßig nebeneinander verschoben werden.Drafting systems for spinning machines, especially ring spinning machines, are known in various designs from the prior art. Their task is to stretch or distort a sliver fed to the drafting system, thereby reducing the cross-section of the fibers. In order to produce a uniform sliver, which is necessary for the formation of a uniform yarn, the fibers must be moved next to each other as evenly as possible during the draft.
Bei Spinnmaschinen, insbesondere Ringspinnmaschinen, bei denen sich ein Drallorgan unmittelbar an das Streckwerk anschließt, besteht der Nachteil, dass sich am Ausgangswalzenpaar des Streckwerks ein sogenanntes Spinndreieck einstellt. Dieses Spinndreieck besitzt eine deutlich höhere Breite als der entstehende Faden und weist Randfasern auf, welche nicht ordnungsgemäß in den entstehenden Faden eingebunden werden und somit nicht zur Festigkeit des zu spinnenden Fadens beisteuern.In spinning machines, especially ring spinning machines, in which a twisting element is directly connected to the drafting system, there is the disadvantage that a so-called spinning triangle is formed on the pair of output rollers of the drafting system. This spinning triangle has a significantly higher width than the resulting thread and has edge fibers that are not properly integrated into the resulting thread and therefore do not contribute to the strength of the thread to be spun.
Zur Vermeidung eines solchen Spinndreiecks am Ausgangswalzenpaar des Streckwerks ist es aus dem Stand der Technik bereits bekannt, einem Streckwerk eine Verdichtungsvorrichtung nachzuordnen, bzw. ein Streckwerk mit einer Verdichtungsvorrichtung auszugestalten, in welcher das verstreckte, jedoch noch im Wesentlichen drehungsfreie Faserband durch seitliches Zusammenfassen seiner Fasern verdichtet bzw. gebündelt wird. Durch die dadurch erzielte Vermeidung des Spinndreiecks vor dem Eintritt des Faserbands in das Drallorgan fällt der verdrehte Faden gleichmäßiger, reißfester und weniger haarig aus.To avoid such a spinning triangle on the output roller pair of the drafting system, it is already known from the prior art to arrange a compression device after a drafting system, or to design a drafting system with a compression device in which the stretched, but still essentially rotation-free sliver is compressed by laterally gathering its fibers is compressed or bundled. By avoiding the spinning triangle before the sliver enters the twisting element, the twisted thread turns out to be more uniform, more tear-resistant and less hairy.
Bekannte Verdichtungsvorrichtungen der eingangs genannten Art sind dabei üblicherweise pneumatisch wirkend ausgestaltet. So ist es bereits bekannt, dass Faserbänder durch Ansaugen an einer sich entlang des Faserverlaufs erstreckenden Perforationsspur zusammengefasst werden, welche für die Saugströmung durchlässige Durchgangsöffnung aufweist, durch die mittels Saugzug Luft eingesaugt wird. Die Perforationsspuren erstrecken sich dabei in Transportrichtung eines Verdichtungsriemchens, das um eine Saugöffnung eines Saugschuhs umlaufend angeordnet ist. In einer alternativen Anordnung kann das Verdichtungsriemchen aus einem engmaschigen Gewebe gebildet sein, welches eine Vielzahl von für die Saugströmung durchlässige Durchgangsöffnungen aufweist, wobei dann der Saugschuh im Bereich der Saugöffnung einen die Saugöffnung begrenzenden, sich in Transportrichtung erstreckenden schmalen Schlitz aufweist, über den allein der Saugzug auf das Faserband wirkt und dieses verdichtetKnown compression devices of the type mentioned are usually designed to act pneumatically. It is already known that slivers are summarized by suction on a perforation track extending along the fiber path, which passage opening is permeable to the suction flow through which air is sucked in by means of suction. The perforation tracks extend in the transport direction of a compaction belt, which is arranged circumferentially around a suction opening of a suction shoe. In an alternative arrangement, the compression strap can be formed from a close-meshed fabric which has a plurality of through openings that are permeable to the suction flow, in which case the suction shoe in the area of the suction opening has a narrow slot which delimits the suction opening and extends in the transport direction, via which only the Suction pull acts on the sliver and compresses it
Die
Zur Verbesserung der Garnqualität ist es aus der
Die Erfindung löst die Aufgabe durch eine Verdichtungsvorrichtung mit den Merkmalen des Anspruchs 1 sowie ein Streckwerk mit den Merkmalen des Anspruchs 6.The invention solves the problem by a compaction device with the features of
Vorteilhafte Weiterbildungen der Verdichtungsvorrichtung sind in den abhängigen Ansprüchen 2 bis 5 angegeben.Advantageous developments of the compression device are specified in
Kennzeichnend für die erfindungsgemäße Verdichtungsvorrichtung ist ein Verdichtungselement mit einer Führungsrolle, die derart in Fasertransportrichtung drehbar im Bereich der Verdichtungszone gegenüber der Saugöffnung anordbar ist, so dass das Faserband mit der Führungsrolle in Eingriff gelangt.Characteristic of the compression device according to the invention is a compression element with a guide roller, which can be arranged in the area of the compression zone opposite the suction opening so that it can be rotated in the fiber transport direction, so that the sliver comes into engagement with the guide roller.
Erfindungsgemäß drückt die mit dem Faserband in Eingriff befindliche Führungsrolle das Faserband in Richtung der Saugöffnung. Die Drehbarkeit der Führungsrollen verhindert dabei ein Schleifen des Faserbands über die Kontaktfläche der Führungsrolle, was die Garnqualität negativ beeinflussen würde. Die Führungsrolle bildet eine Faserführung, welche sich aufgrund ihrer Drehbewegung in Transportrichtung des Faserbands mitbewegt. Die durch die Führungsrolle bereitgestellte Faserführung ermöglicht die Herstellung von Faserbändern mit nur geringen Dick- und Dünnstellen. Das mit der erfindungsgemäßen Verdichtungsvorrichtung hergestellte Faserband ermöglicht die Herstellung eines Garns mit einer besonders hohen Gleichmäßigkeit, Festigkeit sowie geringeren Haarigkeit, was insbesondere aus dem Umstand resultiert, dass das Faserband auch in der Verdichtungszone geführt wird.According to the invention, the guide roller in engagement with the sliver pushes the sliver in the direction of the suction opening. The rotatability of the guide rollers prevents this a grinding of the sliver over the contact surface of the guide roller, which would negatively affect the yarn quality. The guide roller forms a fiber guide, which moves in the transport direction of the sliver due to its rotational movement. The fiber guidance provided by the guide roller enables the production of slivers with only small thick and thin areas. The sliver produced with the compression device according to the invention enables the production of a yarn with a particularly high level of uniformity, strength and less hairiness, which results in particular from the fact that the sliver is also guided in the compression zone.
Die erfindungsgemäße Verdichtungsvorrichtung umfasst einen die Saugöffnung aufweisenden Saugschuh, einem eine Ausgangsoberwalze sowie den Saugschuh im Bereich der Saugöffnung umschlingende Verdichtungsriemchen mit definierten, für die Saugströmung durchlässigen Durchgangsöffnungen und einer im Bereich der Ausgangsoberwalze an dem Verdichtungsriemchen anliegenden Ausgangsunterwalze.The compaction device according to the invention comprises a suction shoe having the suction opening, a compression belt wrapping around an output upper roller and the suction shoe in the area of the suction opening with defined through openings permeable to the suction flow and an output lower roller resting against the compression belt in the area of the output upper roller.
Die Führungsrolle ist bei dieser Ausführung derart in Umlaufrichtung des Verdichtungsriemchens drehbar im Bereich des Saugschuhs gegenüber dem Verdichtungsriemchen anordbar ist, so dass das Faserband mit der Führungsrolle in Eingriff gelangt. Die Umlaufrichtung des Verdichtungsriemchens gibt die Fasertransportrichtung vor und die Verdichtungszone ist im Bereich des Saugschuhs.In this embodiment, the guide roller can be arranged in the area of the suction shoe relative to the compression strap so that it can be rotated in the circumferential direction of the compression apron, so that the sliver comes into engagement with the guide roller. The direction of rotation of the compression belt determines the direction of fiber transport and the compression zone is in the area of the suction shoe.
Bei der erfindungsgemäßen Ausführung drückt die mit dem Faserband in Eingriff befindliche Führungsrolle das Faserband im Bereich vor dem aus Ausgangsoberwalze und Ausgangsunterwalze gebildeten Ausgangswalzenpaar der Verdichtungsvorrichtung das Faserband an das Verdichtungsriemchen, wodurch eine zuverlässige Faserführung vor dem Ausgangswalzenpaar erreicht wird, was insbesondere aus einer nur kurzen nicht geführten Strecke des Faserbandes zwischen dem Ausgangswalzenpaar und dem dem Ausgangswalzenpaar vorgelagerten Walzenpaar des Streckwerks resultiert. Damit wir das Faserband im Wesentlichen über seine gesamte Transportlänge durch die Verdichtungsvorrichtung geführt, wobei dies zunächst im Bereich des Saugschuhs über die Führungsrolle und hieran anschließend über das Ausgangswalzenpaar erfolgt. Dadurch wird die Herstellung eines Garns mit einer besonders hohen Gleichmäßigkeit, Festigkeit sowie geringeren Haarigkeit weiter unterstützt.In the embodiment according to the invention, the guide roller in engagement with the sliver presses the sliver in the area in front of the pair of output rollers of the compression device formed from the output top roller and output bottom roller, the sliver against the compaction belt, whereby reliable fiber guidance in front of the pair of output rollers is achieved, which in particular is not possible from only a short one guided stretch of the sliver between the output roller pair and the pair of rollers of the drafting system upstream of the output roller pair. So that we guide the sliver essentially over its entire transport length through the compaction device, this taking place first in the area of the suction shoe via the guide roller and then via the pair of output rollers. This further supports the production of a yarn with a particularly high level of uniformity, strength and less hairiness.
Die Ausgestaltung der Lagerung des die Führungsrolle tragenden Verdichtungselements sowie die Lagerung der Führungsrolle an dem Verdichtungselement ist grundsätzlich frei wählbar. So besteht die Möglichkeit, das Verdichtungselement ortsfest mit einer gleichbleibenden auf das Faserband wirkenden Andruckkraft gegenüber der Saugöffnung bzw. gegenüber dem Verdichtungsriemchen anzuordnen. Nach einer vorteilhaften Ausgestaltung der Erfindung ist jedoch vorgesehen, dass das Verdichtungselement und/oder die Führungsrolle in Richtung auf Saugöffnung bzw. das Verdichtungsriemchen verstellbar gelagert sind.The design of the storage of the compression element carrying the guide roller as well The mounting of the guide roller on the compression element is fundamentally freely selectable. It is therefore possible to arrange the compression element in a stationary manner with a constant pressure force acting on the sliver relative to the suction opening or relative to the compression strap. According to an advantageous embodiment of the invention, however, it is provided that the compression element and/or the guide roller are mounted so that they can be adjusted in the direction of the suction opening or the compression strap.
Gemäß dieser Ausgestaltung der Erfindung besteht die Möglichkeit, über eine Verstellung der Führungsrolle an dem Verdichtungselement und/oder durch eine Verstellung des Verdichtungselements in Richtung auf die Saugöffnung die Andruckkraft zwischen der Führungsrolle und dem Verdichtungsriemchen in einer für die Faserführung optimalen Weise anzupassen. So kann durch eine Abstandserhöhung die Andruckkraft reduziert bzw. durch eine Abstandsreduzierung die Andruckkraft erhöht werden, wodurch Fertigungstoleranzen ausgeglichen und Anpassungen an die Stärke der Faserbänder in besonders komfortabler Weise vorgenommen werden können.According to this embodiment of the invention, it is possible to adjust the pressure force between the guide roller and the compaction strap in a manner optimal for fiber guidance by adjusting the guide roller on the compression element and/or by adjusting the compression element in the direction of the suction opening. The pressure force can be reduced by increasing the distance or the pressure force can be increased by reducing the distance, whereby manufacturing tolerances can be compensated for and adjustments to the strength of the slivers can be made in a particularly convenient manner.
Zur Einstellung der Klemmkraft ist es dabei bspw. möglich, die Führungsrolle verstellbar an einem ortsfest angeordneten Verdichtungselement anzuordnen. Nach einer vorteilhaften Weiterbildung der Erfindung ist jedoch vorgesehen, dass das die Führungsrolle tragende Verdichtungselement einen in Richtung auf die Saugöffnung längsverschiebbar gelagerten Stützkörper aufweist. Gemäß dieser Ausgestaltung der Erfindung ist der Stützkörper, mit dem sich die Führungsrolle gegenüber dem Verdichtungsriemchen abstützt, in seinem Abstand gegenüber dem Verdichtungsriemchen einstellbar und in der eingestellten Lage fixierbar. Über eine Verlagerung des Stützkörpers kann somit in besonders einfacher und komfortabler Weise der durch die Führungsrolle auf das Verdichtungsriemchen bzw. zwischen dem Verdichtungsriemchen und der Führungsrolle angeordnete Faserband ausgeübte Druck eingestellt werden. Anpassungen der Andruckkraft können in einfacher Weise durch eine Verlagerung des Stützkörpers gegenüber dem Verdichtungsriemchen vorgenommen werden.To adjust the clamping force, it is possible, for example, to arrange the guide roller in an adjustable manner on a stationary compression element. According to an advantageous development of the invention, however, it is provided that the compression element carrying the guide roller has a support body which is mounted in a longitudinally displaceable manner in the direction of the suction opening. According to this embodiment of the invention, the support body with which the guide roller is supported relative to the compression belt can be adjusted in its distance from the compression belt and fixed in the set position. By moving the support body, the pressure exerted by the guide roller on the compression strap or the sliver arranged between the compression strap and the guide roller can be adjusted in a particularly simple and comfortable manner. Adjustments to the pressure force can be made easily by moving the support body relative to the compression strap.
Die Ausgestaltung der Verlagerbarkeit des Stützkörpers ist dabei grundsätzlich frei wählbar. Nach einer vorteilhaften Ausgestaltung ist jedoch vorgesehen, dass der Stützkörper an einer sich in Richtung auf Saugöffnung erstreckenden Stützschiene längs verschieblich gelagert ist. Die Verwendung einer Stützschiene, welche derart ausgestaltet ist, dass der Stützkörper nur in Längsachsenrichtung der Stützschiene verlagerbar ist und Querbewegungen aufgrund der Ausgestaltung der Verbindung zwischen Stützkörper und Stützschiene blockiert sind, verbessert die Verlagerbarkeit sowie Positionierbarkeit der Führungsrolle gegenüber dem Verdichtungsriemchen in ergänzender Weise. Fehlstellungen der Führungsrolle gegenüber dem Verdichtungsriemchen können aufgrund des Zusammenwirkens des Stützkörpers mit der Stützschiene besonders zuverlässig vermieden werden, wodurch die Garnqualität in besonders zuverlässiger Weise gewährleistet werden kann.The design of the displaceability of the support body is fundamentally freely selectable. According to an advantageous embodiment, however, it is provided that the support body is mounted in a longitudinally displaceable manner on a support rail which extends in the direction of the suction opening. The use of a support rail, which is designed in such a way that the support body can only be moved in the longitudinal axis direction of the support rail and transverse movements due to the Design of the connection between the support body and the support rail are blocked, improves the displaceability and positionability of the guide roller relative to the compression belt in a complementary manner. Misalignments of the guide roller relative to the compression strap can be avoided particularly reliably due to the interaction of the support body with the support rail, whereby the yarn quality can be guaranteed in a particularly reliable manner.
Grundsätzlich gewährleistet bereits eine freie Verdrehbarkeit der Führungsrolle eine hohe Garnqualität, wobei die Drehbewegung der Führungsrolle aus dem Zusammenwirken mit dem in Transportrichtung bewegten Faserband resultiert, welches die Führungsrolle in Drehung versetzt. Nach einer besonders vorteilhaften Ausgestaltung der Erfindung ist jedoch vorgesehen, dass die Führungsrolle mit einer diese antreibenden Antriebseinheit gekoppelt ist.In principle, free rotation of the guide roller already ensures a high yarn quality, with the rotational movement of the guide roller resulting from the interaction with the sliver moving in the transport direction, which sets the guide roller in rotation. According to a particularly advantageous embodiment of the invention, however, it is provided that the guide roller is coupled to a drive unit that drives it.
Die Verwendung einer Antriebseinheit ermöglicht es, die Führungsrolle unabhängig von der Transportgeschwindigkeit des Faserbandes und dessen Zusammenwirken mit der Führungsrolle einzustellen. Über eine antreibbare Führungsrolle lassen sich somit in besonders zuverlässiger Weise Relativbewegungen des Faserbandes gegenüber der mit dem Faserband in Kontakt stehenden Kontaktfläche der Führungsrolle vermeiden, was die Herstellung eines Garns mit einer besonders hohen Qualität ermöglicht.The use of a drive unit makes it possible to adjust the guide roller independently of the transport speed of the sliver and its interaction with the guide roller. Using a drivable guide roller, relative movements of the sliver relative to the contact surface of the guide roller that is in contact with the sliver can be avoided in a particularly reliable manner, which enables the production of a yarn with a particularly high quality.
Kennzeichnend für das erfindungsgemäße Streckwerk ist, dass dieses eine Verdichtungsvorrichtung gemäß einem oder mehreren der vorstehenden Ausgestaltungen aufweist. Bei dem erfindungsgemäßen Streckwerk bildet bspw. das vorhandene Ausgangswalzenpaar des Streckwerks die Verdichtungsvorrichtung, so dass das Streckwerk besonders einfach und kompakt ausgebildet sein kann. Demnach umläuft das Verdichtungsriemchen die Ausgangsoberwalze des Streckwerks und den Saugschuh, so dass auf ein separates, die Verdichtungsvorrichtung bildendes Ausgangswalzenpaar verzichtet werden kann. Alternativ schließt sich das Ausgangswalzenpaar der Verdichtungsvorrichtung an die Streckwerkwalzenpaare an, wobei diese gemeinsam als Baueinheit ebenfalls besonders kompakt ausgeführt werden können.What is characteristic of the drafting system according to the invention is that it has a compaction device according to one or more of the above embodiments. In the drafting system according to the invention, for example, the existing pair of output rollers of the drafting system forms the compaction device, so that the drafting system can be designed to be particularly simple and compact. Accordingly, the compaction belt runs around the output top roller of the drafting system and the suction shoe, so that a separate pair of output rollers forming the compaction device can be dispensed with. Alternatively, the output roller pair of the compaction device is connected to the drafting roller pairs, whereby these can also be made particularly compact together as a structural unit.
Ein Ausführungsbeispiel der Erfindung wird nachstehend mit Bezug auf die Zeichnungen erläutert. In den Zeichnungen zeigen:
- Fig. 1
- eine erste perspektivische Ansicht eines Streckwerks mit einer Verdichtungsvorrichtung;
- Fig. 2
- eine zweite perspektivische Ansicht des Streckwerks von
Fig. 1 ; - Fig. 3
- eine Seitenansicht auf das Streckwerk von
Fig. 1 und - Fig. 4
- eine perspektivische Ansicht eines Verdichtungselements des Streckwerks von
Fig. 1 .
- Fig. 1
- a first perspective view of a drafting system with a compaction device;
- Fig. 2
- a second perspective view of the drafting system
Fig. 1 ; - Fig. 3
- a side view of the drafting system
Fig. 1 and - Fig. 4
- a perspective view of a compaction element of the drafting system from
Fig. 1 .
In den
Die Verdichtungsvorrichtung 1 weist ferner zwei im Abstand voneinander angeordnete im Bereich zwischen den Ausgangswalzenpaaren 18 und den dritten Walzenpaaren 17 angeordnete Saugschuhe 3 auf. Die Saugschuhe 3 sind über Saugrohre 13 mit einer hier nicht dargestellten Saugvorrichtung verbunden und weisen jeweils eine in Richtung auf das hindurchzuführende Faserband gerichtete Saugöffnung 4 auf. Die Ausgangsoberwalzen 7 und die Saugschuhe 3 sind dabei jeweils derart von einem Verdichtungsriemchen 5 umschlungen, dass dieses die Saugöffnung 4 überdeckt.The
Zur Verdichtung eines aus dem dritten Walzenpaar 17 austretenden Faserbandes weist das Verdichtungsriemchen 5 mehrere in Transportrichtung hintereinander angeordnete, eine Perforation 6 bildende Durchgangsöffnungen auf. Die Perforation 6 ermöglicht den Durchtritt der durch die Saugvorrichtung an den Saugöffnungen 4 der Saugschuhe 3 bereitgestellten Saugströmung, wodurch die Fasern des verstreckten Faserbandes während des Durchtritts durch die Verdichtungsvorrichtung 1 quer zur Transportrichtung in Richtung auf die Perforation 6 bewegt und dabei verdichtet werden.To compress a sliver emerging from the third pair of
Zur Verbesserung der Führungen des Faserbandes im Bereich zwischen dem dritten Walzenpaar 17 und dem Ausgangswalzenpaar 18 weist das Streckwerk 2 ein Verdichtungselement 9 auf, welches zwei an einem Stützkörper 11 drehbar gelagerte Führungsrollen 10 aufweist. Die Führungsrollen 10 liegen dabei - in Transportrichtung des Faserbandes vor dem Ausgangswalzenpaar 18 - im Bereich des Saugschuhs 3 an dem Verdichtungsriemchen 5 an und drücken dabei das verstrecke Faserband an das Verdichtungsriemchen 5 an, wodurch eine gute Faserführung erzielt wird.To improve the guidance of the sliver in the area between the third pair of
Zur Einstellung der Andruckkraft der Führungsrollen 10 an die Verdichtungsriemchen 5 ist der Stützkörper 11 an einer Stützschiene 12 in Richtung auf die Verdichtungsriemchen 5 längsverstellbar gelagert und über ein Langloch 14 in der eingestellten Position fixierbar. Über die Verlagerbarkeit des Stützkörpers 11 und die dadurch erreichbare Einstellung der Andruckkraft der Führungsrolle 10 an dem Verdichtungsriemchen 5 kann die durch die Führungsrolle 10 und das Verdichtungsriemchen 5 erzeugte Faserführung in komfortabler Weise bspw. an Fertigungstoleranzen sowie unterschiedlichen Stärken der Faserbänder angepasst werden.To adjust the pressure force of the
- 11
- VerdichtungsvorrichtungCompaction device
- 22
- StreckwerkDrafting system
- 33
- SaugschuhSuction shoe
- 44
- SaugöffnungSuction opening
- 55
- VerdichtungsriemchenCompaction straps
- 66
- Durchgangsöffnung/PerforationPassage opening/perforation
- 77
- AusgangsoberwalzeOutput top roller
- 88th
- AusgangsunterwalzeOutput bottom roller
- 99
- VerdichtungselementCompression element
- 1010
- Führungsrolleleadership role
- 1111
- StützkörperSupport body
- 1212
- StützschieneSupport rail
- 1313
- SaugrohrSuction pipe
- 1414
- LanglochLong hole
- 1515
- erstes Walzenpaarfirst pair of rollers
- 1616
- zweites Walzenpaarsecond pair of rollers
- 1717
- drittes Walzenpaarthird pair of rollers
- 1818
- AusgangswalzenpaarOutput roller pair
Claims (6)
- Compacting device (1) for a drafting system (2) of a spinning machine, in particular a ring spinning machine, for compacting a drafted sliver, comprising a compacting zone, in which a suction flow is produced perpendicularly to the fibre transport direction by means of a suction opening (4), wherein the compacting device (1) comprises a suction shoe having the suction opening (4), a compacting apron (5) which wraps around an output top roller (7) and the suction shoe (3) in the region of the suction opening (4) and has defined through-openings (6) which are permeable to the suction flow, and an output bottom roller (8) which bears against the compacting apron (5) in the region of the output top roller (7), with a compacting element (9) having a guide roller (10), which can be arranged in the region of the compacting zone opposite the suction opening (4) so as to be rotatable in the fibre transport direction that the sliver comes into engagement with the guide roller (10), wherein the guide roller (10) in engagement with the sliver presses the sliver - in relation to the transport direction of the sliver - against the compacting apron (5) in the region in front of the pair of output rollers of the compacting device (1) formed by the output top roller (7) and output bottom roller (8).
- Compacting device (1) according to claim 1, characterised in that the compacting element (9) and/or the guide roller (10) can be moved towards the suction opening (4).
- Compacting device (1) according to one or more of the preceding claims, characterised in that the compacting element (9) has a support body (11), which is mounted for longitudinal displacement towards the suction opening (4).
- Compacting device (1) according to claim 3, characterised in that the support body (11) is mounted for longitudinal displacement on a support rail (12) extending towards the suction opening (4).
- Compacting device (1) according to one or more of the preceding claims, characterised in that the guide roller (10) is coupled to a drive unit which drives the guide roller.
- Drafting system (2) for a spinning machine, in particular a ring spinning machine, characterised by a compacting device (1) according to one or more of claims 1 to 5.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019128326.4A DE102019128326A1 (en) | 2019-10-21 | 2019-10-21 | Compaction device for a drafting device of a spinning machine and drafting device for a compression device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3812491A1 EP3812491A1 (en) | 2021-04-28 |
| EP3812491B1 true EP3812491B1 (en) | 2024-03-20 |
Family
ID=72964487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20202675.3A Active EP3812491B1 (en) | 2019-10-21 | 2020-10-20 | Condensing guide for a drafting frame of a spinning machine and drafting frame |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3812491B1 (en) |
| JP (1) | JP2021066993A (en) |
| CN (1) | CN112760765B (en) |
| DE (1) | DE102019128326A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4324861A1 (en) | 2021-04-12 | 2024-02-21 | Agc Inc. | Fluorocopolymer, method for producing fluorocopolymer, fluorocopolymer composition, and crosslinked rubber article |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19726694A1 (en) * | 1996-09-30 | 1998-04-02 | Rieter Ag Maschf | Draw frame for compact spinning preventing inter-cord fibre bridges |
| DE19815054C5 (en) * | 1998-04-03 | 2007-06-14 | Saurer Gmbh & Co. Kg | Method and spinning machine for producing coregarn |
| DE19837181A1 (en) * | 1998-08-17 | 2000-02-24 | Stahlecker Fritz | Apparatus to condense drawn sliver has a belt to carry the sliver over a sliding surface with a suction slit to be pressed against the surface by a clamping roller |
| DE19860201B4 (en) * | 1998-12-24 | 2008-12-18 | Maschinenfabrik Rieter Ag | Device for spinning a thread of several thread components |
| DE10016655A1 (en) * | 2000-04-04 | 2001-10-11 | Stahlecker Fritz | Sliver drawing unit, for a spinner, comprises paired pressure rollers at the sliver condensing zone, with a common intermediate gearing drive encapsulated within a shrouding housing, for protection against fiber debris |
| DE10053442A1 (en) * | 2000-10-27 | 2002-05-08 | Rieter Ag Maschf | Sliver drawing unit for a ring spinning station has a condensing zone defined by a leading press roller and a final twist blocking roller, where the twist block axis is at an angle to the condensing drum axis |
| DE10056185A1 (en) * | 2000-11-13 | 2002-05-23 | Zinser Textilmaschinen Gmbh | Textile machine drawing unit has perforated belt looping one drum and forming a clamp point |
| DE10127741C2 (en) * | 2001-06-08 | 2003-05-08 | Zinser Textilmaschinen Gmbh | Drafting system for a spinning machine |
| DE10158001A1 (en) * | 2001-11-22 | 2003-06-05 | Stahlecker Gmbh Wilhelm | Device on a spinning machine for compacting a fiber structure |
| DE10159048A1 (en) * | 2001-11-30 | 2003-06-18 | Rieter Ag Maschf | Sliver drawing unit at a ring spinning station for drawing and condensing the sliver has a twist block at the end of condensing zone with a camber mantle compressed under loading into a straight line at the condensing roller |
| DE10214641B4 (en) * | 2002-04-02 | 2007-02-22 | Saurer Gmbh & Co. Kg | Pneumatic compacting device for a fiber composite and method for pneumatically compacting a fiber composite |
| DE10322575A1 (en) * | 2003-05-20 | 2004-12-09 | Saurer Gmbh & Co. Kg | Ring spinning machine with compaction devices |
| CN1664192A (en) * | 2005-03-09 | 2005-09-07 | 南通大学 | Compact spinning method for accumulating fiber bundle by using front adsorption roller |
| DE102005045451B4 (en) * | 2005-09-22 | 2008-05-08 | Oerlikon Textile Gmbh & Co. Kg | Device for compacting a fiber structure |
| CN201254625Y (en) * | 2008-09-05 | 2009-06-10 | 东台纺织机械有限责任公司 | Fiber strand coacervation apparatus and ring spinning frame thereof |
| CN102644134B (en) * | 2012-05-22 | 2014-10-29 | 江南大学 | Four-roller oversized drafting compact spinning device |
| DE102012106781A1 (en) * | 2012-07-26 | 2014-05-15 | Maschinenfabrik Rieter Ag | Suction device for drafting equipment of spinning mill machine, has flat surface section with suction slot comprising main slot from which several side slots are branched |
| CN202786565U (en) * | 2012-08-03 | 2013-03-13 | 江南大学 | Double-area airflow control drafting device |
| JP6720781B2 (en) * | 2016-08-31 | 2020-07-08 | 株式会社豊田自動織機 | Fiber bundle concentrator in spinning machine |
| JP7251345B2 (en) * | 2019-06-19 | 2023-04-04 | 株式会社豊田自動織機 | Spinning frame |
-
2019
- 2019-10-21 DE DE102019128326.4A patent/DE102019128326A1/en active Pending
-
2020
- 2020-10-20 EP EP20202675.3A patent/EP3812491B1/en active Active
- 2020-10-20 JP JP2020175837A patent/JP2021066993A/en active Pending
- 2020-10-20 CN CN202011123115.1A patent/CN112760765B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112760765A (en) | 2021-05-07 |
| CN112760765B (en) | 2023-02-17 |
| DE102019128326A1 (en) | 2021-04-22 |
| JP2021066993A (en) | 2021-04-30 |
| EP3812491A1 (en) | 2021-04-28 |
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