EP3754062B1 - Fibre bundle opening device for an open-end spinning device - Google Patents
Fibre bundle opening device for an open-end spinning device Download PDFInfo
- Publication number
- EP3754062B1 EP3754062B1 EP20180129.7A EP20180129A EP3754062B1 EP 3754062 B1 EP3754062 B1 EP 3754062B1 EP 20180129 A EP20180129 A EP 20180129A EP 3754062 B1 EP3754062 B1 EP 3754062B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- support surface
- opening roller
- distance
- fibre
- sliver
- Prior art date
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- 239000000835 fiber Substances 0.000 title claims description 39
- 238000007383 open-end spinning Methods 0.000 title claims description 7
- 230000007704 transition Effects 0.000 claims description 12
- 230000032258 transport Effects 0.000 description 9
- 238000009987 spinning Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 210000001520 comb Anatomy 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
- D01H4/30—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
- D01H4/30—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls
- D01H4/32—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls using opening rollers
Definitions
- the present invention relates to a sliver opening device for an open-end spinning device comprising a feed trough, a sliver draw-in cylinder and an opening roller.
- the fiber sliver draw-in cylinder is designed in connection with a clamping surface of the feed trough to transport a supply fiber sliver in the direction of the opening roller.
- the feed trough has a support surface for fixing a fiber tuft that has been combed out by the opening roller.
- the feeding trough also has a transition area with a convex curvature between the clamping surface and the supporting surface.
- the DE 35 01 842 C2 describes, for example, a sliver opening device in which a cylindrical, preferably corrugated sliver intake cylinder with an associated feed trough forms a clamping area for the supply sliver.
- the slowly revolving sliver draw-in cylinder feeds the supply sliver to a downstream opening roller at a constant transport speed.
- the feed sliver which is preferably temporarily stored in sliver cans, first passes through a compressor on its way to the opening roller, which not only compresses the feed sliver, but also gives it a specific profile that is favorable for feeding.
- the compressed supply sliver then runs into the clamping area formed by the sliver draw-in cylinder and the feed trough, which is usually wider than the supply sliver. This ensures that the supply sliver is also securely clamped in the edge areas.
- a fiber tuft support is arranged following the clamping area. However, no more precise information is given about the geometry of the tuft support.
- the DE 103 51 365 A1 discloses a feed trough for a sliver opening device of an open-end spinning device, with a concave clamping area, effective in connection with a sliver draw-in cylinder, for conveying a feed sliver, lateral guide walls for guiding the feed sliver and a concave support surface for fixing a fiber tuft processed by an opening roller by combing out, wherein the feed trough is pivotable about a pivot axis parallel to the axis of rotation of the opening roller.
- the feed trough is designed and arranged in its working position in such a way that there is a gap width between the support surface and the adjacent tips of the opening roller set at a combing point of between 0.7 and 1.5 mm, which results over an angular range in the direction of rotation of the opening roller of at least 30 ° steadily reduced to a gap width of less than 0.5 millimeters. It is further explained that, in addition to the continuous gap reduction between the support surface and the tips of the opening roller set, the transition area that is brought as close as possible to the opening roller is particularly important. This is intended to counteract a backlog of the tuft, especially in the production of fancy yarn.
- the sliver opening device according to the invention especially yarns synthetic fibers, especially polyester, with improved yarn values.
- the yarns produced with the sliver opening device according to the invention have above all a higher yarn strength but also better uniformity than yarns produced with known sliver opening devices.
- the support surface begins directly after the convex transition area.
- the beginning of the support surface represents the combing point for the fibers.
- Combing is a continuous process.
- the combing-in point is the point at which the combing-in increases. This point is determined less by the distance from the opening roller and more by the deflection in the circumferential direction of the opening roller. This deflection is largely completed after passing through the convex transition area.
- the yarn values can be further improved if the fibers are given more space in the area of the minimum distance between the support surface and tips of the opening roller set than is known in the prior art.
- the support surface is generally dimensioned in such a way that the support surface is brought as close as possible to the tips of the opening roller set. With the distance, it is only necessary to ensure that the tips do not come into contact with the support surface. With such food troughs, the minimum distance is usually between 0.2 and 0.5 millimeters.
- the minimum distance between the support surface and the circular cylindrical surface is greater than 0.5 millimeters, preferably greater than 0.6 millimeters.
- the narrowing of the distance between the support surface and the circular cylindrical surface extends from the start of the support surface to the minimum distance over an angular range of less than 30° in the direction of rotation of the opening roller.
- the support surface moves in the direction of rotation of the opening roller after reaching the minimum distance at a constant distance from the circular cylinder surface. This makes it possible, for example, to adjust the size of a dirt outlet opening following the tuft support.
- the feed trough has lateral guide walls in the area of the support surface for guiding the supply sliver, which extend from the beginning to the end of the support surface.
- This design makes sense above all in connection with an increased minimum distance between the support surface and the circular cylinder surface of the opening roller set.
- the guide walls can then be brought as close as possible to the tips of the opening roller set.
- An increased spacing of the support surface from the tips of the opening roller set can be realized between the guide walls.
- a sliver draw-in cylinder 7 that can be rotated in the direction of arrow 6 .
- the template sliver 4 which is usually in a not shown Sliver can is stored, directed via a compressor 9 in the direction of arrow 15 in a clamping zone, which is formed by the feed trough 11 and the sliver intake cylinder 7.
- the first surface 14a viewed in the fiber transport direction, is planar or even. At the combing point, the surface 14a is at a distance from the circular cylindrical surface 13, on which the tips 12 of the opening roller set 3 lie, which is provided with the reference number 18. The distance is the perpendicular from the support surface 14 to the circular cylindrical surface 13 on which the tips 12 of the opening roller set 3 lie. This distance tapers down to a minimum distance in the fiber transport direction. In the illustrated In the exemplary embodiment, the distance between the planar partial surface 14a tapers down to the minimum distance 19.
- the subsequent partial surface 14b is concave, that is to say curved inwards.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Spinning Or Twisting Of Yarns (AREA)
Description
Die vorliegende Erfindung betrifft eine Faserbandauflöseeinrichtung für eine Offenend-Spinnvorrichtung umfassend eine Speisemulde, einen Faserbandeinzugszylinder und eine Auflösewalze. Der Faserbandeinzugszylinder ist in Verbindung mit einer Klemmfläche der Speisemulde zum Transport eines Vorlagefaserbandes in Richtung der Auflösewalze ausgebildet. Die Speisemulde weist eine Stützfläche zur Fixierung eines durch die Auflösewalze durch Auskämmen bearbeiteten Faserbartes auf. Die Speisemulde weist außerdem zwischen der Klemmfläche und der Stützfläche einen Übergangsbereich mit einer konvexen Krümmung auf.The present invention relates to a sliver opening device for an open-end spinning device comprising a feed trough, a sliver draw-in cylinder and an opening roller. The fiber sliver draw-in cylinder is designed in connection with a clamping surface of the feed trough to transport a supply fiber sliver in the direction of the opening roller. The feed trough has a support surface for fixing a fiber tuft that has been combed out by the opening roller. The feeding trough also has a transition area with a convex curvature between the clamping surface and the supporting surface.
Faserbandauflöseeinrichtungen für Offenend-Spinnvorrichtungen sind in verschiedenen Ausführungsformen bekannt und in zahlreichen Patentschriften ausführlich erläutert.Sliver opening devices for open-end spinning devices are known in various embodiments and are explained in detail in numerous patents.
Die
Die
Es ist die Aufgabe der vorliegenden Erfindung eine Faserbandauflöseeinrichtung zu schaffen, die die Qualität des hergestellten Garnes verbessert.It is the object of the present invention to provide a sliver opening device which improves the quality of the yarn produced.
Zur Lösung der gestellten Aufgabe wird eine Faserbandauflöseeinrichtung für eine Offenend-Spinnvorrichtung vorgeschlagen, die eine Speisemulde, einen Faserbandeinzugszylinder und eine Auflösewalze mit einer Auflösewalzengarnitur, deren Spitzen auf einer Kreiszylinderfläche liegen, umfasst. Der Faserbandeinzugszylinder ist in Verbindung mit einer Klemmfläche der Speisemulde zum Transport eines Vorlagefaserbandes in Richtung der Auflösewalze ausgebildet. Die Speisemulde weist eine Stützfläche zur Fixierung eines durch die Auflösewalze durch Auskämmen bearbeiteten Faserbartes auf. Der Abstand der Stützfläche von der Kreiszylinderfläche verjüngt sich in Fasertransportrichtung bis auf einen minimalen Abstand. Die Speisemulde weist zwischen der Klemmfläche und der Stützfläche einen Übergangsbereich mit einer konvexen Krümmung auf. Der minimale Abstand der Stützfläche von der Kreiszylinderfläche ist kleiner als 1,5 Millimeter. Erfindungsgemäß weist die Stützfläche in Fasertransportrichtung gesehen an ihrem Beginn von der Kreiszylinderfläche einen Abstand zwischen 4 und 8 Millimeter auf.A sliver opening device for an open-end spinning device is proposed to solve the task, which comprises a feed trough, a sliver draw-in cylinder and an opening roller with an opening roller set whose tips lie on a circular cylinder surface. The fiber sliver draw-in cylinder is designed in connection with a clamping surface of the feed trough to transport a supply fiber sliver in the direction of the opening roller. The feed trough has a support surface for fixing a fiber tuft that has been combed out by the opening roller. The distance between the support surface and the circular cylinder surface tapers down to a minimum distance in the fiber transport direction. Between the clamping surface and the supporting surface, the feeding trough has a transition area with a convex curvature. The minimum distance between the support surface and the circular cylinder surface is less than 1.5 millimeters. According to the invention, the support surface has a distance of between 4 and 8 millimeters at its beginning from the circular cylindrical surface, viewed in the fiber transport direction.
Mit der erfindungsgemäßen Faserbandauflöseeinrichtung können vor allem Garne aus synthetischen Fasern, insbesondere aus Polyester, mit verbesserten Garnwerten hergestellt werden. Die mit der erfindungsgemäßen Faserbandauflöseeinrichtung hergestellten Garne weisen vor allem eine höhere Garnfestigkeit aber auch eine bessere Gleichmäßigkeit auf als mit bekannten Faserbandauflöseeinrichtungen hergestellte Garne.With the sliver opening device according to the invention, especially yarns synthetic fibers, especially polyester, with improved yarn values. The yarns produced with the sliver opening device according to the invention have above all a higher yarn strength but also better uniformity than yarns produced with known sliver opening devices.
Wichtig ist dabei ein ausreichender Abstand der Stützfläche von den Spitzen der Auflösewalzengarnitur, insbesondere im Einlaufbereich der Faserbartstütze. Durch einen ausreichenden Abstand werden die Fasern geschont und Beschädigungen, die die Garnqualität negativ beeinflussen, vermieden. Die beanspruchten oberen Grenzen für den Abstand stellen einen zuverlässigen Transport der Fasern durch die Auflösewalze sicher.A sufficient distance between the support surface and the tips of the opening roller set is important, particularly in the inlet area of the tuft support. Sufficient spacing protects the fibers and avoids damage that negatively affects yarn quality. The claimed upper limits for the distance ensure reliable transport of the fibers through the opening roller.
Die Stützfläche beginnt direkt im Anschluss an den konvexen Übergangsbereich. Der Beginn der Stützfläche stellt den Einkämmpunkt für die Fasern dar. Das Einkämmen ist ein kontinuierlicher Prozess. Der Einkämmpunkt ist dabei der Punkt, an dem das Einkämmen verstärkt einsetzt. Dieser Punkt ist weniger durch den Abstand zur Auflösewalze bestimmt, als mehr durch die Umlenkung in die Umfangsrichtung der Auflösewalze. Diese Umlenkung ist nach dem Durchlaufen des konvexen Übergangsbereichs weitestgehend abgeschlossen.The support surface begins directly after the convex transition area. The beginning of the support surface represents the combing point for the fibers. Combing is a continuous process. The combing-in point is the point at which the combing-in increases. This point is determined less by the distance from the opening roller and more by the deflection in the circumferential direction of the opening roller. This deflection is largely completed after passing through the convex transition area.
Die Garnwerte können weiter verbessert werden, wenn man den Fasern auch im Bereich des minimalen Abstandes der Stützfläche von Spitzen der Auflösewalzengarnitur mehr Platz gibt als im Stand der Technik bekannt. Gemäß dem Stand der Technik wird die Stützfläche in der Regel so dimensioniert, dass die Stützfläche so nah wie möglich an die Spitzen der Auflösenwalzengarnitur herangeführt wird. Bei dem Abstand ist dann nur sicherzustellen, dass eine Berührung der Spitzen mit der Stützfläche sicher verhindert wird. Bei solchen Speisemulden liegt der minimale Abstand in Regel zwischen 0,2 und 0,5 Millimeter.The yarn values can be further improved if the fibers are given more space in the area of the minimum distance between the support surface and tips of the opening roller set than is known in the prior art. According to the prior art, the support surface is generally dimensioned in such a way that the support surface is brought as close as possible to the tips of the opening roller set. With the distance, it is only necessary to ensure that the tips do not come into contact with the support surface. With such food troughs, the minimum distance is usually between 0.2 and 0.5 millimeters.
Im Rahmen der vorliegenden Erfindung hat sich jedoch als besonders vorteilhaft erwiesen den minimalen Abstand der Stützfläche von der Kreiszylinderfläche größer als 0,5 Millimeter, vorzugsweise größer als 0,6 Millimeter, zu wählen.In the context of the present invention, however, it has proven to be particularly advantageous to choose the minimum distance between the support surface and the circular cylindrical surface to be greater than 0.5 millimeters, preferably greater than 0.6 millimeters.
Gemäß einer vorteilhaften Ausführungsform erstreckt sich die Verjüngung des Abstandes der Stützfläche von der Kreiszylinderfläche vom Beginn der Stützfläche bis zu dem minimalen Abstand über einen Winkelbereich in Rotationsrichtung der Auflösewalze von weniger als 30°. Hierbei ist es durchaus möglich, dass sich die Stützfläche in Rotationsrichtung der Auflösewalze nach Erreichen des minimalen Abstandes im konstanten Abstand zu der Kreiszylinderfläche fortsetzt. Dadurch ist es zum Beispiel möglich die Größe einer auf die Faserbartstütze folgenden Schmutzaustrittsöffnung einzustellen.According to an advantageous embodiment, the narrowing of the distance between the support surface and the circular cylindrical surface extends from the start of the support surface to the minimum distance over an angular range of less than 30° in the direction of rotation of the opening roller. In this case, it is quite possible that the support surface moves in the direction of rotation of the opening roller after reaching the minimum distance at a constant distance from the circular cylinder surface. This makes it possible, for example, to adjust the size of a dirt outlet opening following the tuft support.
Die Stützfläche kann dabei von ihrem Beginn bis zu ihrem Ende als konkave Fläche ausgebildet sein. Es ist aber von Vorteil, um den breiten Einlaufbereich zu realisieren, wenn die Stützfläche an ihrem Beginn, vorzugsweise von ihrem Beginn bis zum Erreichen des minimalen Abstandes von der Kreiszylinderfläche, als plane Fläche ausgebildet ist. An die plane Fläche kann sich dann eine konkave Fläche anschließen. Je nach Ausbildung kann die konkave Fläche einen konstanten Abstand von der Kreiszylinderfläche aufweisen oder sich mit einen verjüngendem Abstand fortsetzen.The support surface can be designed as a concave surface from its beginning to its end. However, in order to realize the wide inlet area, it is advantageous if the supporting surface is designed as a flat surface at its beginning, preferably from its beginning until the minimum distance from the circular cylindrical surface is reached. A concave surface can then adjoin the flat surface. Depending on the design, the concave surface can have a constant distance from the circular cylinder surface or can continue with a tapering distance.
Gemäß einer vorteilhaften Ausführungsform geht die plane Fläche tangential in die konkave Fläche über. Dadurch wird eine abrupte Änderung des Abstandes zwischen der Stützfläche und der Auflösewalze vermieden, was sich positiv auf die Garnqualität auswirkt.According to an advantageous embodiment, the flat surface merges tangentially into the concave surface. This avoids an abrupt change in the distance between the support surface and the opening roller, which has a positive effect on the yarn quality.
Es ist bekannt im Übergangsbereich zwischen der Klemmfläche und der Stützfläche, gegebenenfalls seitliche Führungswände zum Führen des Vorlagefaserbandes anzuordnen. Dadurch soll ein Auswandern des Vorlagefaserbandes während des Auskämmens verhindert werden. Um das gewährleisten zu können ist der Abstand zwischen den beiden seitlichen Führungswänden kleiner als die axiale Ausdehnung der Auflösewalze. Das heißt, die seitlichen Führungswände stehen der Umfangsfläche der Auflösewalze gegenüber.It is known in the transition area between the clamping surface and the supporting surface to optionally arrange lateral guide walls for guiding the supply fiber sliver. This is intended to prevent the supply sliver from migrating during combing out. In order to be able to ensure this, the distance between the two lateral guide walls is smaller than the axial extent of the opening roller. This means that the lateral guide walls face the peripheral surface of the opening roller.
Gemäß einer bevorzugten Ausführungsform der erfindungsgemäßen Faserbandauflöseeinrichtung weist die Speisemulde im Bereich der Stützfläche seitliche Führungswände zum Führen des Vorlagefaserbandes auf, die sich vom Beginn bis zum Ende der Stützfläche erstrecken. Diese Ausführung ist vor allem in Verbindung mit einem vergrößerten minimalen Abstand der Stützfläche von der Kreiszylinderfläche der Auflösewalzengarnitur sinnvoll. Die Führungswände können dann möglichst nah an die Spitzen der Auflösewalzengarnitur herangeführt werden. Zwischen den Führungswänden kann ein erhöhter Abstand der Stützfläche von den Spitzen der Auflösewalzengarnitur realisiert werden.According to a preferred embodiment of the sliver opening device according to the invention, the feed trough has lateral guide walls in the area of the support surface for guiding the supply sliver, which extend from the beginning to the end of the support surface. This design makes sense above all in connection with an increased minimum distance between the support surface and the circular cylinder surface of the opening roller set. The guide walls can then be brought as close as possible to the tips of the opening roller set. An increased spacing of the support surface from the tips of the opening roller set can be realized between the guide walls.
Die vorliegende Erfindung wird nachfolgend anhand eines in den Figuren dargestellten Ausführungsbeispiels näher erläutert. Es zeigen:
- Fig. 1
- eine Vorderansicht auf eine erfindungsgemäße Faserbandauflöseeinrichtung;
- Fig. 2
- eine dreidimensionale Darstellung eines Auflösewalzengehäuses mit einer erfindungsgemäßen Speisemulde;
- Fig. 3
- eine Detailansicht der erfindungsgemäßen Faserbandauflöseeinrichtung.
- 1
- a front view of a sliver opening device according to the invention;
- 2
- a three-dimensional representation of an opening roller housing with a feed trough according to the invention;
- 3
- a detailed view of the sliver opening device according to the invention.
Die
Im oder am Auflösewalzengehäuse 1 ist außerdem ein in Richtung des Pfeiles 6 rotierbarer Faserbandeinzugszylinder 7 gelagert. Dieser korrespondiert mit einer Klemmfläche 10 einer Speisemulde 11, die mittels eines Speisenmuldenhalters 8 schwenkbar gelagert ist. Wie in
In
Der Faserbandeinzugszylinder 7 transportiert das Vorlagefaserband 4 in Verbindung mit der Klemmfläche 10 der Speisemulde 11 in Richtung der Auflösewalze 2. Der Klemmfläche 10 der Speisemulde 11 folgend durchläuft das Vorlagefaserband 4 einen Übergangsbereich 20 der Speisemulde 11 mit einer konvexen, das heißt nach außen gewölbten, Krümmung. Am Ende des Übergangsbereichs 20, das heißt nach dem Ende der konvexen Krümmung, beginnt eine Stützfläche 14 zur Fixierung des von der Auflösewalze 2 bearbeiteten Faserbartes. Zwischen dem Übergangsbereich 20 und der Stützfläche 14 liegt der Einkämmpunkt. Die Stützfläche 14 umfasst in dem dargestellten Ausführungsbeispiel zwei Teilflächen 14a und 14b. Die in Fasertransportrichtung gesehen erste Fläche 14a ist plan bzw. eben ausgebildet. Am Einkämmpunkt hat die Fläche 14a von der Kreiszylinderfläche 13, auf der die Spitzen 12 der Auflösewalzengarnitur 3 liegen, einen Abstand, der mit dem Bezugszeichen 18 versehen ist. Der Abstand ist dabei das Lot von der Stützfläche 14 auf die Kreiszylinderfläche 13, auf der die Spitzen 12 der Auflösewalzengarnitur 3 liegen. Dieser Abstand verjüngt sich in Fasertransportrichtung bis auf einen minimalen Abstand. In dem dargestellten Ausführungsbeispiel verjüngt sich der Abstand der planen Teilfläche 14a bis auf den minimalen Abstand 19. Die folgende Teilfläche 14b ist konkav, das heißt nach innen gewölbt ausgebildet. Die Fläche 14b ist ebenfalls als Kreiszylinderfläche ausgebildet, wobei die Mittenachse der Rotationachse 22 der Auflösewalze 2 entspricht. Das heißt, der Abstand der Fläche 14b von der Kreiszylinderfläche 13, auf der die Spitzen 12 der Auflösewalzengarnitur 3 liegen, entspricht durchgängig dem minimalen Abstand 19. Erfindungsgemäß liegt der Abstand 18 zwischen 4 und 8 Millimeter und der Abstand 19 ist kleiner ist als 1,5 Millimeter. In dem dargestellten Ausführungsbeispiel ist außerdem der Abstand 19 größer als 0,6 Millimeter.The sliver draw-in
Die Verjüngung des Abstandes der Stützfläche 14 oder genauer gesagt der Teilfläche 14a von der Kreiszylinderfläche 13 vom Beginn der Stützfläche 14 bis zu dem minimalen Abstand 19 erstreckt sich über einen Winkelbereich in Rotationsrichtung der Auflösewalze 2, der mit dem Bezugszeichen 21 gekennzeichnet ist. Dieser Winkelbereich 21 ist in dem dargestellten Ausführungsbeispiel kleiner als 30°.The tapering of the distance between the supporting
Die in
- 11
- Auflösewalzengehäuseopening roller housing
- 22
- Auflösewalzeopening roller
- 33
- Auflösewalzengarnituropening roller set
- 44
- Vorlagefaserbandsupply sliver
- 55
- Pfeilarrow
- 66
- Pfeilarrow
- 77
- Faserbandeinzugszylindersliver feed cylinder
- 88th
- Speisemuldenhalterpan holder
- 99
- Verdichtercompressor
- 1010
- Klemmflächeclamping surface
- 1111
- Speisemuldepantry
- 1212
- Spitzen der AuflösewalzengarniturTips of the opening roller set
- 1313
- Kreiszylinderflächecircular cylinder surface
- 1414
- Stützflächesupport surface
- 1515
- Pfeilarrow
- 1616
- Schwenkachsepivot axis
- 1717
- Pfeilarrow
- 1818
- Abstanddistance
- 1919
- Abstanddistance
- 2020
- Übergangsbereichtransition area
- 2121
- Winkelangle
- 2222
- Rotationsachse der AuflösewalzeAxis of rotation of the opening roller
- 2323
- seitliche Führungswändelateral guide walls
- 2424
- Schmutzaustrittsöffnungdirt outlet opening
- 2525
- Faserleitkanalfiber guide channel
Claims (8)
- A fibre band opening device for an open-end spinning device, comprisinga feed tray (11),a fibre band pull-in cylinder (7) andan opening roller (2) having an opening roller clothing (3), the tips (12) of which lie on a circular cylindrical surface (13), whereinthe fibre band pull-in cylinder (7) is designed to transport, in conjunction with a clamping surface (10) of the feed tray (11), a feed fibre band (4) towards the opening roller (2),the feed tray (11) has a support surface (14) for fixing a fibre tuft, which is processed by the opening roller (2) by combing, and the distance of the support surface (14) from the circular cylindrical surface (13) is tapered in the fibre transport direction to a minimum distance, and the feed tray (11) has a transition area (20) having a convex curvature between the clamping surface (10) and the support surface (14), and the minimum distance (19) of the support surface (14) from the circular cylindrical surface (13) is less than 1.5 millimetrescharacterised in thatthe support surface (14) has a distance (18) of between 4 and 8 millimetres from the circular cylindrical surface (13) at the beginning of the support surface (14) with respect to the fibre transport direction.
- The fibre band opening device according to claim 1, characterised in that the minimum distance (19) of the support surface (14) from the circular cylindrical surface (13) is greater than 0.5 millimetres, preferably greater than 0.6 millimetres.
- The fibre band opening device according to one of the preceding claims, characterised in that the tapering of the distance of the support surface (14) from the circular cylindrical surface (13) from the beginning of the support surface (14) to the minimum distance (19) extends over an angle range of less than 30° in the direction of rotation of the opening roller (2).
- The fibre band opening device according to one of the preceding claims, characterised in that the support surface (14) is designed as a flat surface (14a) from the beginning of the support surface (14) until the minimum distance from the circular cylindrical surface (13) is reached.
- The fibre band opening device according to one of the preceding claims, characterised in that the support surface (14) continues in the fibre transport direction at a constant distance from the circular cylindrical surface (13) after the minimum distance (19) has been reached.
- The fibre band opening device according to one of the preceding claims, characterised in that the support surface (14) comprises a concave surface (14b).
- The fibre band opening device according to one of the preceding claims, characterised in that the support surface comprises a flat surface (14a), which transitions tangentially into a concave surface (14b).
- The fibre band opening device according to one of the preceding claims, characterised in that the feed tray (11) has, in the area of the support surface (14), lateral guide walls (23) for guiding the feed fibre band (4), which extend from the beginning to the end of the support surface (14).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019116584.9A DE102019116584A1 (en) | 2019-06-19 | 2019-06-19 | Sliver opening device for an open-end spinning device and feed trough for the sliver opening device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3754062A1 EP3754062A1 (en) | 2020-12-23 |
EP3754062B1 true EP3754062B1 (en) | 2022-01-26 |
Family
ID=71103232
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20180129.7A Active EP3754062B1 (en) | 2019-06-19 | 2020-06-16 | Fibre bundle opening device for an open-end spinning device |
Country Status (5)
Country | Link |
---|---|
US (1) | US11384455B2 (en) |
EP (1) | EP3754062B1 (en) |
CN (1) | CN112111814B (en) |
BR (1) | BR102020012202A2 (en) |
DE (1) | DE102019116584A1 (en) |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH564104A5 (en) * | 1972-09-18 | 1975-07-15 | Vyzk Ustav Bavlnarsky | |
CH578628A5 (en) * | 1973-01-16 | 1976-08-13 | Vyzk Ustav Bavlnarsky | |
CS165855B1 (en) * | 1973-01-16 | 1975-12-22 | ||
US4024699A (en) * | 1974-10-11 | 1977-05-24 | Schubert & Salzer Maschinenfabrik Aktiengesellschaft | Sliver resolving apparatus for open-end spinning machines |
DE3374423D1 (en) * | 1982-11-05 | 1987-12-17 | Rieter Ag Maschf | Cleaning machine for fibre material |
DE3501842C2 (en) * | 1985-01-22 | 1997-08-21 | Schlafhorst & Co W | Sliver dissolving unit for an OE spinning machine |
DE4101315C2 (en) * | 1991-01-18 | 1999-04-29 | Stahlecker Fritz | Feeding and opening device for an OE spinning device |
DE4227885C2 (en) * | 1992-08-22 | 1994-11-17 | Rieter Ingolstadt Spinnerei | Device for pneumatically feeding fibers to the fiber collection surface of an open-end spinning element |
DE4441254A1 (en) * | 1994-11-19 | 1996-05-23 | Truetzschler Gmbh & Co Kg | Device for opening and cleaning flake fiber material, for. B. cotton, synthetic fiber u. the like |
DE10132912A1 (en) * | 2001-06-28 | 2003-01-16 | Stahlecker Gmbh Wilhelm | Air spinning unit has opening roller inside a perforated drum that acts as collecting surface for the fiber web from which the yarn is formed |
DE10351365A1 (en) * | 2003-10-16 | 2005-06-02 | Saurer Gmbh & Co. Kg | Feeding trough for a sliver opening device of an open-end spinning device |
DE102011116786A1 (en) * | 2011-10-22 | 2013-04-25 | Oerlikon Textile Gmbh & Co. Kg | Feeding trough for a sliver opening device of an open-end spinning device |
DE102014003329A1 (en) * | 2014-03-08 | 2015-09-10 | Saurer Germany Gmbh & Co. Kg | Method and device for operating an open-end rotor spinning machine |
DE102017118392A1 (en) * | 2017-08-11 | 2019-02-14 | Saurer Spinning Solutions Gmbh & Co. Kg | Feed table device for a sliver disassembling device of an open-end spinning device |
-
2019
- 2019-06-19 DE DE102019116584.9A patent/DE102019116584A1/en not_active Withdrawn
-
2020
- 2020-06-16 EP EP20180129.7A patent/EP3754062B1/en active Active
- 2020-06-17 CN CN202010552839.1A patent/CN112111814B/en active Active
- 2020-06-17 BR BR102020012202-9A patent/BR102020012202A2/en not_active IP Right Cessation
- 2020-06-18 US US16/905,150 patent/US11384455B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
US20200399791A1 (en) | 2020-12-24 |
CN112111814B (en) | 2022-08-30 |
CN112111814A (en) | 2020-12-22 |
EP3754062A1 (en) | 2020-12-23 |
BR102020012202A2 (en) | 2020-12-29 |
US11384455B2 (en) | 2022-07-12 |
DE102019116584A1 (en) | 2020-12-24 |
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