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EP0853147B1 - Cleaning lip - Google Patents

Cleaning lip Download PDF

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Publication number
EP0853147B1
EP0853147B1 EP97111910A EP97111910A EP0853147B1 EP 0853147 B1 EP0853147 B1 EP 0853147B1 EP 97111910 A EP97111910 A EP 97111910A EP 97111910 A EP97111910 A EP 97111910A EP 0853147 B1 EP0853147 B1 EP 0853147B1
Authority
EP
European Patent Office
Prior art keywords
lip
cleaning
roll
cleaning lip
wiping edge
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
Application number
EP97111910A
Other languages
German (de)
French (fr)
Other versions
EP0853147A1 (en
Inventor
Wolfgang Göhler
Alfred Nauthe
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rieter Ingolstadt Spinnereimaschinenbau AG
Original Assignee
Rieter Ingolstadt Spinnereimaschinenbau AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rieter Ingolstadt Spinnereimaschinenbau AG filed Critical Rieter Ingolstadt Spinnereimaschinenbau AG
Publication of EP0853147A1 publication Critical patent/EP0853147A1/en
Application granted granted Critical
Publication of EP0853147B1 publication Critical patent/EP0853147B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01HSPINNING OR TWISTING
    • D01H5/00Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/60Arrangements maintaining drafting elements free of fibre accumulations
    • D01H5/62Non-rotary cleaning pads or plates; Scrapers

Definitions

  • the invention relates to a cleaning lip for a rotating roller of a textile fiber material drafting system of a textile machine according to the preamble of claim 1 and the use of such a cleaning lip according to claim 15.
  • the term textile machine encompasses roving machines, such as cards or draw frames, and spinning machines which have a drafting system. These textile machines process textile fiber material. That is cotton or its blends with synthetic fibers.
  • the fiber material can be in the form of a nonwoven fabric or fiber sliver.
  • Pairs of rollers are arranged in the drafting system. A pair of rollers is formed as top and bottom rollers, between which the fiber material is guided. In addition to fibers of the desired stack length, short fibers and dirt are contained in the fiber material.
  • the dirt is solid dirt particles of the cotton such as shell parts, dust or foreign particles, but also avivage.
  • This dirt and fibers collect on the outer surface of the roller. There they adversely affect the nip of the pair of rollers and favor the formation of coils on the roller. Winding ultimately leads to the jamming of the fiber material on the pair of rollers.
  • a cleaning lip is used on the outer surface of the rotating roller.
  • Rieter Ingolstadt Spinnereimaschinenbau AG shows in the operating instructions, route RSB 851 (4135), SB 851 (4131), p. 27, points 4.4.2.8 and p. 28, fig. 5, the use of cleaning lips (P2) on the Roller of a 3-over-3 drafting system.
  • the cleaning lip is assembled from a suspension element and a lip.
  • the cleaning lip is fixed at such an angle to the outer surface of the roller that the wiping edge of the lip is guided parallel to the longitudinal axis of the roller and rests under bending tension with the wiping edge on the outer surface of the roller.
  • the cleaning lip scrapes dirt that settles from the outer surface of the roller and ensures that it is kept clean.
  • Fig. 5 shows, the dirt falls off the cleaning lip and is captured and removed by a pneumatic suction system of the drafting system.
  • Fig. 5 there shows that the lip has a relatively large length and a direction of application of the wiping edge of the lip depending on the direction of rotation is required.
  • the direction of application of the wiping edge of the lip changes, which does not return to the original application direction when the roller is subsequently turned forward.
  • the function of the cleaning lip is severely restricted.
  • the direction of contact of the scraper edge must also be checked and corrected.
  • the lip is exposed to strong mechanical and thermal stresses. Mechanical stress results from heavy soiling of the roller or formation of coils. The friction between the lip and the outer surface of the roller leads to a high thermal load. This means that the wiping edge of the lip does not form a constant, continuous line of contact on the lateral surface of the roller after a relatively short time.
  • the generic DE 34 22 139 C2 has the task of a scraper (corresponds to a cleaning lip) to create that works reliably, is inexpensive to manufacture, wherein at the same time resulting from a stiffening of the wiper lip (corresponds to a lip) resulting disadvantages are avoided.
  • the wiper lip is in one for this Fastened mounting rail and lies with a scraper edge on one to be cleaned counterclockwise rotating cylinder. It is assumed that a certain bending stress acts on the elastic wiper lip. The However, bending only occurs in the direction of rotation of the roller. In opposite Direction, the wiper lip is supported by the extension of the holding rail.
  • the wiper lip has larger transverse recesses and in between corresponding ribs and a smaller longitudinal recess.
  • the transversely extending recesses result in a wavy weakening of the Longitudinal wiping lip.
  • the longitudinal recess 17 results in a undulating weakening of the wiper lip in the transverse direction.
  • a disadvantage of one Such execution is that by the undulating weakening Wiping lip no even wiping of the roller.
  • Another The main disadvantage is that when the roller is turned back, the scraper edge Wiping lip is subject to heavy friction wear, since the wiping lip against the Direction of rotation of the roller is directed and may not be sufficient.
  • the wiping lip as a result of the uneven wiping and as a result of the Extension of the holding rail does not mean that the lip turns when the roller rotates settling dirt completely removed, so that when the roller is used for a long time the formation of disruptive wraps takes place.
  • the cleaning effect of the cleaning lip is only limited to the removal of interfering particles etc. in normal Operation of a drafting system or the rollers.
  • EP 45 725 shows a lip with a stiffening (rib) at the free end of the Lip. This is intended to achieve a longer lip service life. Due to the However, there is an increased risk of relatively great rigidity or rigidity Cracking of the lip, which does not increase the service life.
  • the object of the invention is to reduce the service life of a cleaning lip on a rotating Roller of a textile fiber material processing drafting system and at the same time to improve the cleaning effect of the cleaning lip on the roller.
  • the object is achieved by the features of claim 1.
  • the cross-section of the lip is weakened at a defined point by the groove.
  • There the course of the bending lines in the material of the lip is constricted when it bends. It is thereby achieved that, starting from the groove in the interior of the material, defined bending lines up to the scraper edge are generated, which represent a defined, namely identical bending stress.
  • This ensures that an approximately constant bending stress exists in differentially small sections over the length of the groove on the scraper edge.
  • the bending stiffness in the area of the support means is reduced. With a vertical guidance of the side edges of the lip (with respect to the scraping edge), the material of the lip is abruptly broken off.
  • a groove is attached, which is parallel to the wiping edge of the lip over the entire Section to the width of the lip is guided, the side edge with the Scraper edge forms an obtuse angle.
  • the cleaning lip according to the invention has the advantage that a continuous line of contact of its scraper edge on the outer surface of the roller is guaranteed for a significantly longer service life.
  • the distance between the wiping edge of the lip and the delimiting edge of the support means is considerably shorter. This results in a reduced use of material for the lip.
  • the lip can be positively attached to the suspension in the injection molding process.
  • the suspension element can itself be made of plastic. A different thermal expansion between the suspension element and lip is thus avoided.
  • the ends of the support means are shaped so that they only have to be inserted into a holding means.
  • the support means can be linearly guided in a central area where the lip is attached and cranked in the two end areas.
  • the holding means is advantageously a guide groove on the roller bearing.
  • the guide groove on the bearing forms a stop on which the carrying means of the cleaning lip is inserted and fixed, so that no additional adjustment of the cleaning lip is required.
  • At least the cranked end region of the support means corresponds in its material thickness to the width of the guide groove in the holding means.
  • the suspension element can be reinforced on the material side compared to the two end regions of the suspension element. This ensures that the support means can only be arranged in the holding means in a predetermined position (eg groove on the lip opposite the drafting system).
  • a web is enclosed in the material of the lip between the groove and the scraper edge.
  • the bar is cast in when the lip is injection molded.
  • the web is preferably made of metal. This improves the stiffening.
  • the depth of the groove is less than or equal to half the material thickness of the lip.
  • Figure 1 shows schematically three pairs of rollers 2, 2 '; 3, 3 ', 4, 4' of a drafting system 1.
  • Fiber material is conveyed through the drafting system 1 in accordance with the running direction 8.
  • the direction of rotation of the rollers of the drafting system is indicated by arrows.
  • a cleaning lip 5, 6, 7 is assigned to the lower roller of a pair of rollers.
  • the cleaning lips 5, 6, 7 touch the wiping edge of their lip against the lateral surface of the lower roller. Due to the design of the drafting system and thus the position of a lower roller in relation to the drafting system base body, the length of the individual lips for the rollers of a drafting system is often different. It is inefficient. If a uniform length of the cleaning lips is nevertheless used, adjustable holding means must be available on the drafting system in order to be able to position the lip in the correct position.
  • FIG. 5 shows such a holding means 18 known in the prior art.
  • the holding means 18 receives the cleaning lip 21 in a guide groove 20.
  • the holding means 18 is fastened to the bearing 16 for a lower roller 17 via a releasable fastening means 19.
  • the longitudinal axis L of the roller 17 leads into the image plane.
  • the direction of contact for the cleaning lip 21 on the roller 17 is achieved by rotating and fixing the holding means 18 about the fastening means 19 acting as an axis. This is expensive, and there is also the possibility of incorrect settings of the direction of application for the cleaning lip, since there is poor visibility, in particular with lower rollers.
  • Figures 2 and 3 show a cleaning lip 9, which consists essentially of a support means 10 and a lip 11.
  • the suspension element can be a rod, a tube or a flat bar.
  • the cleaning lip 11 is positively attached to the support means 10 in the injection molding process.
  • the lip 11 is essentially rectangular, the width of the lip being limited by the side edges S 1 , S 2 .
  • the width of the lip corresponds essentially to the length of the lateral surface of a roller.
  • the length of the lip is limited by the wiping edge AK.
  • the wiping edge of the lip is guided parallel to the longitudinal axis of the roller and is placed under bending stress on the outer surface of the roller.
  • the lip is made of elastic plastic.
  • the elastic plastic has a Shore A hardness of less than or equal to 90.
  • a groove 12 which is parallel to the longitudinal axis of the roller over a section to the width of the lip, which is at a distance A to the two end edges S 1 , S 2 of the lip 11 ends.
  • the groove can be arranged either on the concave or the convex side of the lip (when the lip is in the working position, FIG. 6).
  • the depth of the groove is less than or equal to half the material thickness of the lip.
  • This groove improves the bending stress of the lip resting on the lateral surface, so that a continuous stripping line of the stripping edge is formed on the lateral surface of the roller.
  • a web (ST) is enclosed in the elastic plastic of the lip between the groove 12 and the wiping edge AK. This further improves the stiffening.
  • This web (ST) is advantageously made of metal.
  • FIG. 4 Another embodiment is shown in FIG. 4.
  • a lip 23 is positively attached to a support means 22, which has a groove 24 in the vicinity of the support means, which is guided parallel to the longitudinal axis of the roller over the entire section of the width of the lip, the side edge S 3 , S 4 with the scraper edge AK 1 includes an obtuse angle ⁇ 1 , ⁇ 2 .
  • FIG. 6 shows an improved holding means for a cleaning lip 9 in the diagram.
  • a roller 14 with a longitudinal axis LA running into the image plane is arranged in a bearing 13 (corresponds to a holding means).
  • the bearing 13 has a guide groove 15 into which a cleaning lip 9 can be inserted and fixed as far as it will go. So that the cleaning lip always reaches a desired installation position (groove on the side of the lip that is assigned to the roller concave or convex), the support means can be reinforced on the material side in its central region compared to the two end regions of the support means, so that a forced insertion position into the installation position is created.
  • the stop of the guide groove 15 is designed in such a way that when lips of uniform length are used, their wiping edge lies against the outer surface of the roller 14 with a slight bend (see FIG. 6). This corresponds to the working position of the lip in the direction of rotation of the roller. If the lip is deflected in a different direction of application (when the direction of rotation changes), when the roller 14 is rotated again in the direction of operation, the lip can be brought back into the original direction of application. It was found that the tangential force component on the cleaning lip according to the invention at the point of contact with the cylinder is increased compared to the solution according to the prior art (FIG. 5).
  • the cleaning lip according to the invention for removing Wrap can be used, the carrying means of the cleaning lip in Holding means at a distance, is releasably fixed parallel to the roller and the Scraper edge of the lip is guided parallel to a longitudinal axis of the roller and under Bending stress is present on a lateral surface of the roller and thus a predetermined one Direction of contact on the lateral surface and the roller forwards or backwards is rotatable.
  • Elimination of a wrap can be achieved by doing the opposite Rotation of the roller to the previous rotation of the wiping edge of the lip predefined investment direction independently in a different investment direction is pivoted and when the rotation is changed again, the scraper edge is automatically pivoted again in the specified direction of investment.
  • the lip is independently swung back and forth by scraping the Scraper edge on the outer surface of the roller is eliminated.
  • Figure 6 also illustrates that the cleaning lip 9 with its shortened length (at least 10 mm to at most 15 mm) less space required in the lower one Drawing room space claimed. Thus, more favorable conditions for the Suction as well as for the design or utilization of the lower Drafting room created.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Cleaning In General (AREA)

Description

Die Erfindung betrifft eine Putzlippe für eine rotierende Walze eines textilen Fasermaterials verarbeitenden Streckwerks einer Textilmaschine gemäß dem Oberbegriff des Anspruchs 1 sowie die Verwendung einer solchen Putzlippe gemäß Anspruch 15.
Der Begriff Textilmaschine umfaßt Vorspinnmaschinen, wie zum Beispiel Karden oder Strecken, sowie Spinnmaschinen, die ein Streckwerk haben. Diese Textilmaschinen verarbeiten textiles Fasermaterial. Das ist Baumwolle oder deren Mischungen mit Kunstfasern. Das Fasermaterial kann als Faservlies oder Faserband vorliegen.
Im Streckwerk sind Walzenpaare angeordnet. Ein Walzenpaar wird als Ober- und Unterwalzen gebildet, zwischen denen das Fasermaterial geführt wird.
Im Fasermaterial befinden sich neben Fasern gewünschter Stapellänge, Kurzfasern und Schmutz. Beim Schmutz handelt es sich um feste Schmutzpartikel der Baumwolle wie Schalenteile, Staub oder Fremdpartikel, aber auch Avivage. Dieser Schmutz sowie Fasern sammeln sich auf der Mantelfläche der Walze. Dort beeinflussen sie nachteilig den Klemmspalt des Walzenpaares und begünstigen eine Wickelbildung an der Walze. Eine Wickelbildung führt letztlich zum Stau des Fasermaterials am Walzenpaar. Um diese nachteiligen Folgen zu vermeiden, erfolgt der Einsatz einer Putzlippe an der Mantelfläche der rotierenden Walze.
Die Rieter Ingolstadt Spinnereimaschinenbau AG zeigt in der Bedienungsanleitung, Strecke RSB 851 (4135), SB 851 (4131), S. 27, Pkt. 4.4.2.8 und S. 28, Abb. 5, den Einsatz von Putzlippen (P2) an der Walze eines 3-über-3-Streckwerkes. Die Putzlippe ist aus einem Tragemittel und einer Lippe zusammengefügt. Die Putzlippe ist in einem solchen Winkel zur Mantelfläche der Walze fixiert, daß die Abstreifkante der Lippe parallel zur Längsachse der Walze geführt ist und unter Biegespannung mit der Abstreifkante auf der Mantelfläche der Walze anliegt. Bei der Rotation der Walze schabt die Putzlippe sich absetzenden Schmutz von der Mantelfläche der Walze und sorgt für eine Sauberhaltung.
Wie die Bedienungsanleitung S. 38, Abb. 5 zeigt, fällt der Schmutz von der Putzlippe ab und wird durch ein pneumatisch arbeitendes Absaugsystem des Streckwerks erfaßt und abtransportiert.
Die dortige Abb. 5 zeigt, daß die Lippe eine relativ große Länge hat und eine drehrichtungsabhängige Anlagerichtung der Abstreifkante der Lippe erforderlich ist.
Bei einem kurzfristigen Rückdrehen der Walze (was ein Bediener bei Beseitigung eines Wickels an der Walze macht) ändert sich die Anlagerichtung der Abstreifkante der Lippe, die sich bei nachfolgendem Vorwärtsdrehen der Walze nicht wieder in die ursprüngliche Anlagerichtung bringt. In einem solchen Fall ist die Funktion der Putzlippe stark eingeschränkt. Die Anlagerichtung der Abstreifkante muß zusätzlich kontrolliert und korrigiert werden.
Die Lippe ist unter Betriebsbedingungen starken mechanischen und thermischen Beanspruchungen ausgesetzt. Mechanische Beanspruchung resultiert aus starker Verschmutzung der Walze oder Wickelbildung. Die Reibung zwischen Lippe und Mantelfläche der Walze führt zu einer hohen thermischen Belastung. Das führt dazu, daß die Abstreifkante der Lippe nach relativ kurzer Zeit keine konstante, durchgängige Berührungslinie auf der Mantelfläche der Walze bildet.
Es zeigt sich, daß sich die Abstreifkante wellt oder abnutzt und nicht mit der gesamten Abstreifkante an der Mantelfläche der Walze anliegt. Es existiert eine unterschiedliche Wärmedehnung zwischen Tragemittel und Lippe.
Damit wird die Funktion der Reinigung und Sauberhaltung der Mantelfläche verschlechtert. Das erfordert einen Austausch der Putzlippe. Die gegenwärtige Standzeit der Putzlippe ist relativ gering.
Im Stand der Technik gab es weitere Versuche, die Putzlippe zu verbessern.
Die CH 681 459 A5 hat die Aufgabe, eine gute Austauschbarkeit des Gummielements (entspricht der Lippe) zu gewährleisten und den Abstreifeffekt zu erhöhen. Fertigungstechnisch ist das dortige Gummielement aufwendig.
The invention relates to a cleaning lip for a rotating roller of a textile fiber material drafting system of a textile machine according to the preamble of claim 1 and the use of such a cleaning lip according to claim 15.
The term textile machine encompasses roving machines, such as cards or draw frames, and spinning machines which have a drafting system. These textile machines process textile fiber material. That is cotton or its blends with synthetic fibers. The fiber material can be in the form of a nonwoven fabric or fiber sliver.
Pairs of rollers are arranged in the drafting system. A pair of rollers is formed as top and bottom rollers, between which the fiber material is guided.
In addition to fibers of the desired stack length, short fibers and dirt are contained in the fiber material. The dirt is solid dirt particles of the cotton such as shell parts, dust or foreign particles, but also avivage. This dirt and fibers collect on the outer surface of the roller. There they adversely affect the nip of the pair of rollers and favor the formation of coils on the roller. Winding ultimately leads to the jamming of the fiber material on the pair of rollers. In order to avoid these disadvantageous consequences, a cleaning lip is used on the outer surface of the rotating roller.
Rieter Ingolstadt Spinnereimaschinenbau AG shows in the operating instructions, route RSB 851 (4135), SB 851 (4131), p. 27, points 4.4.2.8 and p. 28, fig. 5, the use of cleaning lips (P2) on the Roller of a 3-over-3 drafting system. The cleaning lip is assembled from a suspension element and a lip. The cleaning lip is fixed at such an angle to the outer surface of the roller that the wiping edge of the lip is guided parallel to the longitudinal axis of the roller and rests under bending tension with the wiping edge on the outer surface of the roller. When the roller rotates, the cleaning lip scrapes dirt that settles from the outer surface of the roller and ensures that it is kept clean.
As the operating instructions on page 38, Fig. 5 shows, the dirt falls off the cleaning lip and is captured and removed by a pneumatic suction system of the drafting system.
Fig. 5 there shows that the lip has a relatively large length and a direction of application of the wiping edge of the lip depending on the direction of rotation is required.
If the roller is turned back for a short time (which is what an operator does when a roll is removed from the roller), the direction of application of the wiping edge of the lip changes, which does not return to the original application direction when the roller is subsequently turned forward. In such a case, the function of the cleaning lip is severely restricted. The direction of contact of the scraper edge must also be checked and corrected.
Under operating conditions, the lip is exposed to strong mechanical and thermal stresses. Mechanical stress results from heavy soiling of the roller or formation of coils. The friction between the lip and the outer surface of the roller leads to a high thermal load. This means that the wiping edge of the lip does not form a constant, continuous line of contact on the lateral surface of the roller after a relatively short time.
It can be seen that the scraper edge corrugates or wears and does not rest with the entire scraper edge on the outer surface of the roller. There is a different thermal expansion between the suspension element and the lip.
This deteriorates the function of cleaning and keeping the outer surface clean. This requires an exchange of the cleaning lip. The current service life of the cleaning lip is relatively short.
There have been further attempts in the prior art to improve the cleaning lip.
The CH 681 459 A5 has the task of ensuring good interchangeability of the rubber element (corresponds to the lip) and to increase the wiping effect. In terms of production technology, the rubber element there is complex.

Die gattungsbildende DE 34 22 139 C2 hat die Aufgabe, einen Abstreifer (entspricht einer Putzlippe) zu schaffen, der zuverlässig funktioniert, dessen Herstellung kostengünstig ist, wobei gleichzeitig die sich aus einer Versteifung der Abstreiflippe (entspricht einer Lippe) ergebenden Nachteile vermieden werden. Die Abstreiflippe ist hierfür in einer Halteschiene befestigt und liegt mit einer Abstreifkante an einem zu reinigenden sich gegen den Uhrzeigersinn drehenden Zylinder an. Es ist davon auszugehen, daß hierbei eine gewisse Biegespannung auf die elastische Abstreiflippe einwirkt. Die Biegung erfolgt allerdings nur in Drehrichtung der Walze. In entgegengesetzter Richtung ist die Abstreiflippe mittels der Verlängerung der Halteschiene abgestützt. Die Abstreiflippe weist größere quer verlaufende Ausnehmungen und dazwischen entsprechende Rippen und eine kleinerere längs verlaufende Ausnehmung auf. Die quer verlaufenden Ausnehmungen ergeben eine wellenförmige Schwächung der Abstreiflippe in Längsrichtung. Die längsverlaufende Ausnehmung 17 ergibt eine wellenförmige Schwächung der Abstreiflippe in Querrichtung. Nachteilig bei einer derartigen Ausführung ist es, daß durch die wellenförmige Schwächung der Abstreiflippe keine gleichmäßige Abstreifung der Walze erfolgt. Ein weiterer wesentlicher Nachteil ist, daß bei einem Rückdrehen der Walze die Abstreifkante der Abstreiflippe einen starken Reibverschleiß unterliegt, da die Abstreiflippe gegen die Laufrichtung der Walze gerichtet ist und nicht ausreichen kann. Außerdem gestattet die Abstreiflippe in Folge der ungleichmäßigen Abstreifung und in Folge der Verlängerung der Halteschiene nicht, daß die Lippe bei Rotation der Walze den sich absetzenden Schmutz vollständig beseitigt, so daß bei längerem Einsatz der Walze die Bildung von störenden Wickeln erfolgt. Die Reinigungswirkung der Putzlippe ist lediglich beschränkt auf die Entfernung von störenden Partikeln etc. bei normalen Betrieb eines Streckwerks bzw. der Walzen.The generic DE 34 22 139 C2 has the task of a scraper (corresponds to a cleaning lip) to create that works reliably, is inexpensive to manufacture, wherein at the same time resulting from a stiffening of the wiper lip (corresponds to a lip) resulting disadvantages are avoided. The wiper lip is in one for this Fastened mounting rail and lies with a scraper edge on one to be cleaned counterclockwise rotating cylinder. It is assumed that a certain bending stress acts on the elastic wiper lip. The However, bending only occurs in the direction of rotation of the roller. In opposite Direction, the wiper lip is supported by the extension of the holding rail. The wiper lip has larger transverse recesses and in between corresponding ribs and a smaller longitudinal recess. The transversely extending recesses result in a wavy weakening of the Longitudinal wiping lip. The longitudinal recess 17 results in a undulating weakening of the wiper lip in the transverse direction. A disadvantage of one Such execution is that by the undulating weakening Wiping lip no even wiping of the roller. Another The main disadvantage is that when the roller is turned back, the scraper edge Wiping lip is subject to heavy friction wear, since the wiping lip against the Direction of rotation of the roller is directed and may not be sufficient. Also allowed the wiping lip as a result of the uneven wiping and as a result of the Extension of the holding rail does not mean that the lip turns when the roller rotates settling dirt completely removed, so that when the roller is used for a long time the formation of disruptive wraps takes place. The cleaning effect of the cleaning lip is only limited to the removal of interfering particles etc. in normal Operation of a drafting system or the rollers.

Die EP 45 725 zeigt eine Lippe mit einer Versteifung (Rippe) am freien Ende der Lippe. Es soll damit eine längere Standzeit der Lippe erzielt werden. Aufgrund der relativ großen Steifigkeit oder Starrheit besteht jedoch die erhöhte Gefahr einer Rißbildung an der Lippe, was zu keiner Erhöhung der Standzeit führt. EP 45 725 shows a lip with a stiffening (rib) at the free end of the Lip. This is intended to achieve a longer lip service life. Due to the However, there is an increased risk of relatively great rigidity or rigidity Cracking of the lip, which does not increase the service life.

Aufgabe der Erfindung ist es, die Standzeit einer Putzlippe an einer rotierenden Walze eines textilen Fasermaterial verarbeitenden Streckwerks zu erhöhen und zugleich die Reinigungswirkung der Putzlippe an der Walze zu verbessern.The object of the invention is to reduce the service life of a cleaning lip on a rotating Roller of a textile fiber material processing drafting system and at the same time to improve the cleaning effect of the cleaning lip on the roller.

Die Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruchs 1 gelöst. Durch die Nut wird der Querschnitt der Lippe an definierter Stelle geschwächt. Dort ist der Verlauf der Biegelinien im Material der Lippe bei deren Biegung eingeschnürt. Es wird damit erreicht, daß ausgehend von der Nut im Materialinneren definierte Biegelinien bis zur Abstreifkante erzeugt werden, die eine definierte, nämlich gleichartige Biegespannung repräsentieren. Somit wird gesichert, daß über die Länge der Nut an der Abstreifkante eine annähernd konstante Biegespannung in differentiel kleinen Abschnitten existiert. Andererseits wird die Biegesteifigkeit im Bereich des Tragemittels reduziert.
Mit einer senkrechten Führung der Seitenkanten der Lippe (bezüglich zur Abstreifkante) erfolgt ein abrupter Abbruch des Materials der Lippe. Um die an den rechtwinklig geführten Seitenkanten (in Bezug auf Abstreifkante) zu geringe Biegespannung ausgleichen zu können, wird dort eine größere Biegespannung zugelassen. Dies wird erreicht, indem in einer Ausgestaltung die Nut nicht bis an die Seitenkante geführt wird. Das wirkt einer Rißbildung im Bereich der Seitenkanten entgegen.
The object is achieved by the features of claim 1. The cross-section of the lip is weakened at a defined point by the groove. There the course of the bending lines in the material of the lip is constricted when it bends. It is thereby achieved that, starting from the groove in the interior of the material, defined bending lines up to the scraper edge are generated, which represent a defined, namely identical bending stress. This ensures that an approximately constant bending stress exists in differentially small sections over the length of the groove on the scraper edge. On the other hand, the bending stiffness in the area of the support means is reduced.
With a vertical guidance of the side edges of the lip (with respect to the scraping edge), the material of the lip is abruptly broken off. In order to compensate for the too low bending stress on the right-angled side edges (in relation to the scraper edge), a greater bending stress is permitted there. This is achieved in that in one embodiment the groove is not guided to the side edge. This counteracts the formation of cracks in the area of the side edges.

Nach einer anderen Ausgestaltung ist auf der Lippe in der Nähe des Tragemittels eine Nut angebracht ist, die parallel zur Abstreifkante der Lippe über den gesamten Abschnitt zur Breite der Lippe geführt ist, wobei die Seitenkante mit der Abstreifkante einen stumpfen Winkel einschließt.According to another embodiment is on the lip near the support means a groove is attached, which is parallel to the wiping edge of the lip over the entire Section to the width of the lip is guided, the side edge with the Scraper edge forms an obtuse angle.

Die erfindungsgemäße Putzlippe erbringt den Vorteil, daß für eine wesentlich höhere Standzeit eine durchgängige Berührungslinie ihrer Abstreifkante auf der Mantelfläche der Walze gewährleistet wird.
Mit der erfindungsgemäßen Lösung wird es auch möglich, die Lippe kürzer (kürzere Stirnkante) zu gestalten, d.h. die Lippe ist von geringerer Länge. Der Abstand zwischen Abstreifkante der Lippe und begrenzender Kante des Tragemittels ist wesentlich kürzer. Das erbringt einen verringerten Materialeinsatz für die Lippe.
Damit wird es möglich, die Schmutzkammer unterhalb eines Streckwerkes kleiner zu machen, d.h. eine verkürzte Anordnung des Streckwerks auf dem Maschinengestell zu ermöglichen, andererseits wird mehr Freiraum für die untere Streckwerksabsaugung ermöglicht, wenn die Putzlippe eine geringere Länge hat.
Das wirkt sich auch vorteilhaft auf die Luftführung der pneumatischen Absaugung aus.
Mit der Verkürzung der Länge der Lippe wird auch eine Unabhängigkeit von der Drehrichtung der Walze erreicht. Sollte es bei kurzzeitigem Rückdrehen der Walze zu einer Auslenkung der Lippe in ihrer Anlagerichtung kommen, dann ist eine Selbstausrichtung der Lippe in die ursprüngliche Anlagerichtung bei nachfolgendem Vorwärtsdrehen der Walze gewährleistet.
Die Lippe kann im Spritzgußverfahren formschlüssig am Tragemittel befestigt werden. Vorteilhafterweise sind am Tragemittel keine zusätzlichen Ausnehmungen im Material erforderlich. Das Tragemittel kann selbst aus Kunststoff bestehen. Es wird damit eine unterschiedliche Wärmedehnung zwischen Tragemittel und Lippe vermieden.
Die Enden des Tragemittels sind so geformt, daß sie lediglich in ein Haltemittel eingesteckt werden müssen. Das Tragemittel kann in einem Mittenbereich, wo die Lippe befestigt ist, linear geführt sein und in den beiden Endbereichen gekröpft sein.
Das Haltemittel ist vorteilhafterweise eine Führungsnut am Lager der Walze. Die am Lager vorhandene Führungsnut bildet einen Anschlag an dem das Tragemittel der Putzlippe eingeführt und fixiert wird, so daß kein zusätzliches Justieren der Putzlippe erforderlich wird. Mindestens der gekröpfte Endbereich des Tragemittels entspricht in seiner Materialstärke der Weite der Führungsnut im Haltemittel. Das Tragemittel kann in seinem Mittenbereich materialseitig verstärkt sein gegenüber den beiden Endbereichen des Tragemittels. Damit wird erreicht, daß das Tragemittel nur in einer vorgegebenen Position (z.B. Nut auf der Lippe dem Streckwerk gegenüberliegend) im Haltemittel angeordnet werden kann.
In einer weiteren Ausgestaltung der Erfindung ist vorgesehen, daß im Material der Lippe zwischen Nut und Abstreifkante ein Steg eingeschlossen ist. Das Eingießen des Steges wird beim Spritzgießen der Lippe realisiert. Der Steg ist vorzugsweise aus Metall. Es wird damit eine Verbesserung der Aussteifung erzielt.
In einer weiteren Ausgestaltung ist die Tiefe der Nut weniger oder gleich der Hälfte der Materialstärke der Lippe.
The cleaning lip according to the invention has the advantage that a continuous line of contact of its scraper edge on the outer surface of the roller is guaranteed for a significantly longer service life.
With the solution according to the invention, it is also possible to make the lip shorter (shorter end edge), ie the lip is of shorter length. The distance between the wiping edge of the lip and the delimiting edge of the support means is considerably shorter. This results in a reduced use of material for the lip.
This makes it possible to make the dirt chamber below a drafting system smaller, ie to enable a shorter arrangement of the drafting system on the machine frame, on the other hand, more space is made possible for the lower drafting system suction if the cleaning lip has a shorter length.
This also has an advantageous effect on the air routing of the pneumatic suction.
With the shortening of the length of the lip, independence from the direction of rotation of the roller is also achieved. If the lip is deflected briefly in its direction of contact when the roller is turned back briefly, then a self-alignment of the lip in the original direction of contact is ensured when the roller is subsequently turned forward.
The lip can be positively attached to the suspension in the injection molding process. Advantageously, no additional recesses in the material are required on the support means. The suspension element can itself be made of plastic. A different thermal expansion between the suspension element and lip is thus avoided.
The ends of the support means are shaped so that they only have to be inserted into a holding means. The support means can be linearly guided in a central area where the lip is attached and cranked in the two end areas.
The holding means is advantageously a guide groove on the roller bearing. The guide groove on the bearing forms a stop on which the carrying means of the cleaning lip is inserted and fixed, so that no additional adjustment of the cleaning lip is required. At least the cranked end region of the support means corresponds in its material thickness to the width of the guide groove in the holding means. In its central region, the suspension element can be reinforced on the material side compared to the two end regions of the suspension element. This ensures that the support means can only be arranged in the holding means in a predetermined position (eg groove on the lip opposite the drafting system).
In a further embodiment of the invention it is provided that a web is enclosed in the material of the lip between the groove and the scraper edge. The bar is cast in when the lip is injection molded. The web is preferably made of metal. This improves the stiffening.
In a further embodiment, the depth of the groove is less than or equal to half the material thickness of the lip.

Ausführungsbeispiele zur Erfindung sind in Zeichnungen dargestellt und im folgenden näher beschrieben.Embodiments of the invention are shown in drawings and in following described in more detail.

Es zeigen

Figur 1
Walzen eines Streckwerks mit Putzlippen;
Figur 2
Vorderansicht einer Putzlippe mit Nut;
Figur 3
Seitenansicht einer Putzlippe mit Nut;
Figur 3a
Seitenansicht einer Putzlippe mit Nut und Steg;
Figur 4
Putzlippe mit Nut und schrägen Seitenkanten der Lippe;
Figur 5
Schema der Befestigung einer Putzlippe nach dem Stand der Technik;
Figur 6
Schema eines Haltemittels für die Putzlippe.
Show it
Figure 1
Rolling a drafting system with cleaning lips;
Figure 2
Front view of a cleaning lip with groove;
Figure 3
Side view of a cleaning lip with groove;
Figure 3a
Side view of a cleaning lip with groove and web;
Figure 4
Cleaning lip with groove and sloping side edges of the lip;
Figure 5
Scheme of the attachment of a cleaning lip according to the prior art;
Figure 6
Scheme of a holding means for the cleaning lip.

Figur 1 zeigt schematisch drei Walzenpaare 2, 2' ; 3, 3', 4, 4' eines Streckwerks 1. Fasermaterial wird entsprechend der Laufrichtung 8 durch das Streckwerk 1 gefördert. Die Drehrichtung der Walzen des Streckwerks ist durch Pfeile gekennzeichnet. Jeweils der unteren Walze eines Walzenpaares ist eine Putzlippe 5, 6, 7 zugeordnet. Die Putzlippen 5, 6, 7 berühren mit der Abstreifkante ihrer Lippe die Mantelfläche der unteren Walze.
Aufgrund der Konstruktion des Streckwerks und somit der Position einer unteren Walze gegenüber dem Streckwerksgrundkörper ist oftmals die Länge der einzelnen Lippen für die Walzen eines Streckwerks unterschiedlich. Das ist unrationell. Wird dennoch auf eine einheitliche Länge der Putzlippen zurückgegriffen, müssen am Streckwerk einstellbare Haltemittel vorhanden sein, um die Lippe in der richtigen Lage positionieren zu können.
Figure 1 shows schematically three pairs of rollers 2, 2 '; 3, 3 ', 4, 4' of a drafting system 1. Fiber material is conveyed through the drafting system 1 in accordance with the running direction 8. The direction of rotation of the rollers of the drafting system is indicated by arrows. A cleaning lip 5, 6, 7 is assigned to the lower roller of a pair of rollers. The cleaning lips 5, 6, 7 touch the wiping edge of their lip against the lateral surface of the lower roller.
Due to the design of the drafting system and thus the position of a lower roller in relation to the drafting system base body, the length of the individual lips for the rollers of a drafting system is often different. It is inefficient. If a uniform length of the cleaning lips is nevertheless used, adjustable holding means must be available on the drafting system in order to be able to position the lip in the correct position.

Figur 5 zeigt ein solches im Stand der Technik bekanntes Haltemittel 18. Das Haltemittel 18 nimmt die Putzlippe 21 in einer Führungsnut 20 auf. Das Haltemittel 18 ist über ein lösbares Befestigungsmittel 19 am Lager 16 für eine untere Walze 17 befestigt. Die Längsachse L der Walze 17 führt in die Bildebene hinein. Die Anlagerichtung für die Putzlippe 21 an der Walze 17 wird durch Verdrehen und Fixieren des Haltemittels 18 um das als Achse wirkende Befestigungsmittel 19 erreicht.
Das ist aufwendig, außerdem besteht die Möglichkeit von Fehleinstellungen der Anlagerichtung für die Putzlippe, da insbesondere bei unteren Walzen eine schlechte Sicht besteht.
FIG. 5 shows such a holding means 18 known in the prior art. The holding means 18 receives the cleaning lip 21 in a guide groove 20. The holding means 18 is fastened to the bearing 16 for a lower roller 17 via a releasable fastening means 19. The longitudinal axis L of the roller 17 leads into the image plane. The direction of contact for the cleaning lip 21 on the roller 17 is achieved by rotating and fixing the holding means 18 about the fastening means 19 acting as an axis.
This is expensive, and there is also the possibility of incorrect settings of the direction of application for the cleaning lip, since there is poor visibility, in particular with lower rollers.

Die Figuren 2 und 3 zeigen eine Putzlippe 9, die im wesentlichen aus einem Tragemittel 10 und einer Lippe 11 besteht. Das Tragemittel kann eine Stange, ein Rohr oder eine flache Leiste sein. Die Putzlippe 11 ist im Spritzgußverfahren formschlüssig auf dem Tragemittel 10 befestigt. Die Lippe 11 ist im wesentlichen rechteckförmig ausgebildet, wobei die Lippe in ihrer Breite durch die Seitenkanten S1, S2 begrenzt ist. Die Breite der Lippe entspricht im wesentlichen der Länge der Mantelfläche einer Walze. Die Länge der Lippe wird begrenzt durch die Abstreifkante AK. Die Abstreifkante der Lippe ist parallel zur Längsachse der Walze geführt und unter Biegespannung auf der Mantelfläche der Walze angelegt. Die Lippe besteht aus elastischem Kunststoff. Der elastische Kunststoff hat eine Shore-A-Härte von weniger oder gleich 90. Auf der Lippe 11 ist in Nähe des Tragemittels 10 eine Nut 12 angebracht, die parallel zur Längsachse der Walze über einen Abschnitt zur Breite der Lippe geführt ist, der im Abstand A zu den beiden Stirnkanten S1, S2 der Lippe 11 endet. Die Nut kann entweder auf der konkaven oder der konvexen Seite der Lippe (bei Arbeitsstellung der Lippe, Fig. 6) angeordnet sein. Die Tiefe der Nut ist weniger oder gleich der Hälfte der Materialstärke der Lippe. Durch diese Nut wird die Biegespannung der an der Mantelfläche anliegenden Lippe verbessert, so daß eine durchgängige Abstreiflinie der Abstreifkante auf der Mantelfläche der Walze gebildet wird. In einer Ausgestaltung der Erfindung (Fig. 3a) ist im elastischen Kunststoff der Lippe zwischen Nut 12 und Abstreifkante AK ein Steg (ST) eingeschlossen. Dadurch wird die Aussteifung weiter verbessert. Dieser Steg (ST) ist vorteilhafterweise aus Metall.Figures 2 and 3 show a cleaning lip 9, which consists essentially of a support means 10 and a lip 11. The suspension element can be a rod, a tube or a flat bar. The cleaning lip 11 is positively attached to the support means 10 in the injection molding process. The lip 11 is essentially rectangular, the width of the lip being limited by the side edges S 1 , S 2 . The width of the lip corresponds essentially to the length of the lateral surface of a roller. The length of the lip is limited by the wiping edge AK. The wiping edge of the lip is guided parallel to the longitudinal axis of the roller and is placed under bending stress on the outer surface of the roller. The lip is made of elastic plastic. The elastic plastic has a Shore A hardness of less than or equal to 90. On the lip 11 in the vicinity of the support means 10 is a groove 12 which is parallel to the longitudinal axis of the roller over a section to the width of the lip, which is at a distance A to the two end edges S 1 , S 2 of the lip 11 ends. The groove can be arranged either on the concave or the convex side of the lip (when the lip is in the working position, FIG. 6). The depth of the groove is less than or equal to half the material thickness of the lip. This groove improves the bending stress of the lip resting on the lateral surface, so that a continuous stripping line of the stripping edge is formed on the lateral surface of the roller. In one embodiment of the invention (FIG. 3a), a web (ST) is enclosed in the elastic plastic of the lip between the groove 12 and the wiping edge AK. This further improves the stiffening. This web (ST) is advantageously made of metal.

Eine andere Ausgestaltung zeigt Figur 4. Dort ist an einem Tragemittel 22 eine Lippe 23 formschlüssig befestigt, die in Nähe des Tragemittels eine Nut 24 hat, die parallel zur Längsachse der Walze über den gesamten Abschnitt der Breite der Lippe geführt ist, wobei die Seitenkante S3, S4 mit der Abstreifkante AK1 einen stumpfen Winkel α1, α2 einschließt.Another embodiment is shown in FIG. 4. There, a lip 23 is positively attached to a support means 22, which has a groove 24 in the vicinity of the support means, which is guided parallel to the longitudinal axis of the roller over the entire section of the width of the lip, the side edge S 3 , S 4 with the scraper edge AK 1 includes an obtuse angle α 1 , α 2 .

Figur 6 zeigt im Schema ein verbessertes Haltemittel für eine Putzlippe 9. Eine Walze 14 mit einer in die Bildebene hineinlaufenden Längsachse LA ist in einem Lager 13 (entspricht einem Haltemittel) angeordnet. Das Lager 13 hat eine Führungsnut 15, in die eine Putzlippe 9 bis zum Anschlag einschiebbar und fixierbar ist. Damit die Putzlippe stets eine gewünschte Einbaulage (Nut auf der Seite der Lippe, die der Walze konkav oder konvex zugeordnet ist) erreicht, kann das Tragemittel in seinem Mittenbereich materialseitig verstärkt sein gegenüber den beiden Endbereichen des Tragemittels, so daß eine erzwungene Einführposition in die Einbaulage geschaffen wird.
Der Anschlag der Führungsnut 15 ist so gestaltet, daß bei Verwendung von Lippen einheitlicher Länge deren Abstreifkante unter leichter Biegung (siehe Fig. 6) an der Mantelfläche der Walze 14 anliegt. Das entspricht der Arbeitsstellung der Lippe bei Betriebsdrehrichtung der Walze. Bei Auslenkung der Lippe in eine andere Anlagerichtung (bei Drehrichtungswechsel) kann bei erneuter Drehung der Walze 14 in die Betriebsdrehrichtung die Lippe wieder in die ursprüngliche Anlagerichtung gebracht werden. Es wurde gefunden, daß die tangentiale Kraftkomponente an der erfindungsgemäßen Putzlippe an der Berührungsstelle zum Zylinder vergrößert ist gegenüber der Lösung nach dem Stand der Technik (Fig. 5).
FIG. 6 shows an improved holding means for a cleaning lip 9 in the diagram. A roller 14 with a longitudinal axis LA running into the image plane is arranged in a bearing 13 (corresponds to a holding means). The bearing 13 has a guide groove 15 into which a cleaning lip 9 can be inserted and fixed as far as it will go. So that the cleaning lip always reaches a desired installation position (groove on the side of the lip that is assigned to the roller concave or convex), the support means can be reinforced on the material side in its central region compared to the two end regions of the support means, so that a forced insertion position into the installation position is created.
The stop of the guide groove 15 is designed in such a way that when lips of uniform length are used, their wiping edge lies against the outer surface of the roller 14 with a slight bend (see FIG. 6). This corresponds to the working position of the lip in the direction of rotation of the roller. If the lip is deflected in a different direction of application (when the direction of rotation changes), when the roller 14 is rotated again in the direction of operation, the lip can be brought back into the original direction of application. It was found that the tangential force component on the cleaning lip according to the invention at the point of contact with the cylinder is increased compared to the solution according to the prior art (FIG. 5).

Es wurde gefunden, daß die erfindungsgemäße Putzlippe zur Beseitigung von Wickeln verwenden werden kann, wobei das Tragemittel der Putzlippe in Haltemitteln in einem Abstand, parallel zur Walze lösbar fixiert ist und die Abstreifkante der Lippe parallel zu einer Längsachse der Walze geführt ist und unter Biegespannung auf einer Mantelfläche der Walze anliegt und so eine vorgegebene Anlagerichtung auf der Mantelfläche einnimmt und die Walze vor- oder rückwärts drehbar ist. It has been found that the cleaning lip according to the invention for removing Wrap can be used, the carrying means of the cleaning lip in Holding means at a distance, is releasably fixed parallel to the roller and the Scraper edge of the lip is guided parallel to a longitudinal axis of the roller and under Bending stress is present on a lateral surface of the roller and thus a predetermined one Direction of contact on the lateral surface and the roller forwards or backwards is rotatable.

Eine Beseitigung eines Wickels kann erreicht werden, indem bei entgegengesetzter Drehung der Walze zur bisherigen Drehung die Abstreifkante der Lippe aus der vorgegebenen Anlagerichtung selbständig in eine andere Anlagerichtung geschwenkt wird und bei erneutem Wechsel der Drehung die Abstreifkante selbständig wieder in die vorgegebene Anlagerichtung geschwenkt wird. Durch das selbständige Hin- und Herschwenken der Lippe wird der Wickel durch Schaben der Abstreifkante auf der Mantelfläche der Walze beseitigt wird.Elimination of a wrap can be achieved by doing the opposite Rotation of the roller to the previous rotation of the wiping edge of the lip predefined investment direction independently in a different investment direction is pivoted and when the rotation is changed again, the scraper edge is automatically pivoted again in the specified direction of investment. By the the lip is independently swung back and forth by scraping the Scraper edge on the outer surface of the roller is eliminated.

Figur 6 verdeutlicht auch, daß die Putzlippe 9 mit ihrer verkürzten Länge (mindestens 10 mm bis höchstens 15 mm) weniger Platzbedarf im unteren Streckwerksraum beansprucht. Somit werden günstigere Bedingungen für die Absaugung als auch für die konstruktive Gestaltung bzw. Ausnutzung des unteren Streckwerksraumes geschaffen.Figure 6 also illustrates that the cleaning lip 9 with its shortened length (at least 10 mm to at most 15 mm) less space required in the lower one Drawing room space claimed. Thus, more favorable conditions for the Suction as well as for the design or utilization of the lower Drafting room created.

Claims (15)

  1. A cleaning lip at a rotating roll of a drawing frame of a textile machine processing fibrous material, wherein the cleaning lip (9) comprises of a carrying means (10, 22) integrated with a lip (11, 23), the lip (11, 23) is composed of elastic plastic and a wiping edge (AK, AK1) of the lip (11, 23) runs parallel to the longitudinal axis of the roll (14) and lays under bending stress on the outer surface of the roll (14), and the material of the lip (11, 23) in the near of the carrying means (10, 22) shows a weakening, characterized in that the weakening is formed as a groove (12, 24) which runs parallel to the longitudinal axis of the roll (14) and retaining means (13) for the cleaning lip (9) are formed in a way, that the wiping edge (AK, AK1) lays on the outer surface of the roll with a light bending corresponding operational forward rotation, assumes upon the corresponding reversal of the roll (14) and when the roll (14) returns to its forward rotation the wiping edge (AK, AK1) reassumes its original position.
  2. A cleaning lip according to Claim 1, characterized in that the groove (12) ends at a spatial interval (A) from both of the side edges (S1, S2) of the lip (11).
  3. A cleaning lip according to Claim 1, characterized in that the groove (24) extends over the entire width of the lip (23).
  4. A cleaning lip according to one or more of the Claims 1 to 3, characterized in that the side edges (S1, S2) of the lip are at right angles to the wiping edge.
  5. A cleaning lip according to one or more of the Claims 1 to 3, characterized in that the side edges (S3, S4) of the lip enclose an obtuse angle (α1 α2).
  6. A cleaning lip according to one or more of the Claims 1 to 5, characterized in that in the interior of the lip between the groove (12, 24) and wiping edge (AK, AK1) a rigid bar (ST) has been enclosed.
  7. A cleaning lip according to Claim 6, characterized in that the rigid bar (ST) is of metal.
  8. A cleaning lip according to one or more of the Claims 1 to 7, characterized in that the depth of the groove (12, 24) is less than, or equal to half of the material thickness of the lip.
  9. A cleaning lip according to one or more of the Claims 1 to 8, characterized in that the lip (11, 23) is comprised of an elastic plastic with a Shore A-hardness of less than or equal to 90.
  10. A cleaning lip according to Claim 1, characterized in the carrier means (10, 22) extends itself linearly in a middle area where the lip is affixed, and is bent at each end.
  11. A cleaning lip according to Claim 10, characterized in that at least the bent end zones of the carrier means possess a material thickness which corresponds to the width of a guide nut (15, 20) in a retaining means (13, 18).
  12. A cleaning lip according to Claim 10, characterized in that the carrier means (10, 22) is materially reinforced in its middle section as opposed to the two end zones of said carrier means.
  13. A cleaning lip according to Claim 1, characterized in that the carrier means (10, 22) is comprised of plastic.
  14. A cleaning lip according to Claim 1, therein characterized, in that the length (1) of the lip (11, 23) from one edge bordering on the carrier means (10, 22) to the wiping edge (AK, AK1) is at least 10 mm to a maximum of 15 mm.
  15. The use of a cleaning lip (9) according to one or more of the Claims 1 to 14 for the clearing of wrappings, wherein the cleaning lip (9) is releasable affixed at a spatial interval, parallel to the roll (14) and the wiping edge thereof (AK, AK1) of the lip (11, 23) runs parallel to the longitudinal axis of the roll (14), and lays under bending stress against the outer surface of the roll (14), thereby assuming a specific flexural curve in contact with the outer surface of the roll, characterized in that when the roll (14) reverses its rotation from an original direction, then the wiping edge (AK, AK1) of the lip (11, 23) swings itself out of the original roll surface contact position and upon a subsequent change of roll rotation back to the original direction, the said wiping edge (AK, AK1) also swings itself back to its original wiping position.
EP97111910A 1996-10-12 1997-07-12 Cleaning lip Expired - Lifetime EP0853147B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19642198A DE19642198C2 (en) 1996-10-12 1996-10-12 Cleaning lip
DE19642198 1996-10-12

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EP0853147B1 true EP0853147B1 (en) 2000-10-11

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DE10207255A1 (en) * 2002-02-21 2003-09-04 Rieter Ingolstadt Spinnerei Sliver drawing unit has an elastic cleaning lip at one roller surface, with a brake section, to detach clinging fibers to be carried off in an air stream
EP1700937A2 (en) 2005-03-09 2006-09-13 Rieter Ingolstadt Spinnereimaschinenbau AG Device for removing dirt from a spinning preparatory machine comprising a drafting device

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DE19814490A1 (en) * 1998-04-01 1999-10-07 Voith Sulzer Papiertech Patent Stoppage avoiding method for nozzle, especially for paper web or cardboard in applying glue, pigments or coatings with color stripes, through fountain applicator
JP2014009404A (en) * 2012-06-27 2014-01-20 Murata Mach Ltd Cleaning device, draft machine and spinning machine of draft roller
DE102020132058A1 (en) * 2020-12-02 2022-06-02 Maschinenfabrik Rieter Ag Elastic cleaning lip, support element and cleaning device

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US2498213A (en) * 1946-06-17 1950-02-21 Lodding Engineering Corp Doctor device for rolls and cylinders
US3356067A (en) * 1966-09-14 1967-12-05 Lodding Engineering Corp Doctor blades having relieved ends
US3703019A (en) * 1970-10-15 1972-11-21 Norton Co Surface conforming wear resistant doctor blade for rolls
EP0045725B1 (en) * 1980-08-04 1985-01-16 Hans Rudolf Hotz Device for cleaning the rolls of draft rolling mills of textile machines
US4387663A (en) * 1981-10-07 1983-06-14 Beloit Corporation Blade type fountain coater metering device
CH659088A5 (en) * 1983-06-20 1986-12-31 Galipag SCRAPER FOR THE CYLINDER OF TEXTILE MACHINES.
KR940000938B1 (en) * 1987-03-24 1994-02-04 가부시끼가이샤 도요다지도오속기 세이사꾸쇼 Swingingly movable cleaner mechanism suspended from a draft roller
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DE10207255A1 (en) * 2002-02-21 2003-09-04 Rieter Ingolstadt Spinnerei Sliver drawing unit has an elastic cleaning lip at one roller surface, with a brake section, to detach clinging fibers to be carried off in an air stream
DE10207255B4 (en) * 2002-02-21 2011-05-26 Rieter Ingolstadt Gmbh textile machine
EP1700937A2 (en) 2005-03-09 2006-09-13 Rieter Ingolstadt Spinnereimaschinenbau AG Device for removing dirt from a spinning preparatory machine comprising a drafting device

Also Published As

Publication number Publication date
US5940925A (en) 1999-08-24
DE19642198A1 (en) 1998-04-16
EP0853147A1 (en) 1998-07-15
DE59702452D1 (en) 2000-11-16
DE19642198C2 (en) 1999-11-04

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