EP1408142A1 - Saw tooth wire for card clothing - Google Patents
Saw tooth wire for card clothing Download PDFInfo
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- EP1408142A1 EP1408142A1 EP03022645A EP03022645A EP1408142A1 EP 1408142 A1 EP1408142 A1 EP 1408142A1 EP 03022645 A EP03022645 A EP 03022645A EP 03022645 A EP03022645 A EP 03022645A EP 1408142 A1 EP1408142 A1 EP 1408142A1
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- Prior art keywords
- profile
- tooth
- sawtooth
- segment
- wire according
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
- D01G15/84—Card clothing; Manufacture thereof not otherwise provided for
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
- D01G15/84—Card clothing; Manufacture thereof not otherwise provided for
- D01G15/88—Card clothing; Manufacture thereof not otherwise provided for formed from metal sheets or strips
Definitions
- the invention relates to a sawtooth wire for producing a sawtooth all-steel set for the customer and / or the take-off roller of a carding machine or Card with a plurality of one behind the other in the longitudinal direction of the wire Teeth, each one starting from a tooth base towards one Tooth tip extending tooth face and one over two parallel to the longitudinal direction of the wire extending tooth flanks connected to the tooth face and starting out tooth back extending from the tooth tip in the direction of the following tooth base has, and a method for producing such sawtooth wires.
- Carding machines and cards are used in the production of yarns for alignment and cleaning of the textile fibers forming the yarns.
- the Textile fibers presented with the help of feed rollers a so-called drum. Acting it is a roller-shaped element, which with a Checkmark or sawtooth all-steel set is provided and rotated around the roller axis becomes.
- the drum set if necessary, works together with the outer surface of the drum distributed flat bars an alignment in the course of the rotation of the drum and cleaning of the supplied textile fibers.
- the fiber fleece obtained with the help of so-called takers and / or Removal rollers removed from the drum and fed for further processing.
- the pickup or pickup rollers usually have in the area of their lateral surface also a sawtooth all-steel set, which in the course of its rotation into the engages fiber fleece carried by the reel or a take-off roller and this pulls off the reel or the take-off roller.
- the object of the invention based on sawtooth wires for the production of all-steel sets for customers and / or To provide take-off rollers of a carding machine or card, which under at the same time ensuring high yarn quality and high production speed allow.
- this object is achieved by developing the known sawtooth wires solved, which is essentially characterized in that at least one Tooth flank of at least one sawtooth at least one between the tooth tip and the tooth base arranged and provided with a profile segment.
- This invention is based on the knowledge that those known when used Sawtooth wires have seen problems due to the fact that the assembly lanes the all-steel clothing of the customers and / or the take-off rollers with fiber material fill if sawtooth wires are used to manufacture these sets, which have a flank profile to maintain the necessary holding force.
- Both Sawtooth wires according to the invention this defect is remedied by the fact that the Creation of the required holding force required profiles only between the tooth base and the tooth tip are provided and do not extend beyond the tooth incision depth extend along the side of the blade towards the tooth base.
- that which is provided between the tooth base and the tooth tip Profile segment can be provided particularly easily if there is at least one preferably approximately parallel to the longitudinal direction of the wire profile web and / or at least one preferably running approximately parallel to the longitudinal direction of the wire Profile groove, because with such sawtooth wires, the profiling at the same time can take place with the other shaping of the wire. It is manufacturing technology particularly favorable if the profile segment having at least one profile groove arranged in a tooth flank aligned with the adjoining foot flank is.
- the arc bordered section in a perpendicular to the longitudinal direction of the profile web or the Cutting plane running profile groove a radius of curvature in the range of 0.05 - 0.5 mm, preferably 0.1-0.3 mm, particularly preferably about 0.15 mm.
- At least one of the profile segments has a plurality of approximately parallel to the Has longitudinal grooves of the wire profile grooves, it has to ensure a complete detachment of the nonwoven fabric from the clothing with simultaneous guarantee a high holding force and sufficient stability which is usually different from that Tooth base in the direction of the teeth tapering to the tip of the tooth has proven to be expedient, if at least one of the profile grooves has a smaller profile depth than that on the Side of this profile groove facing tooth base arranged profile groove. It means that the profile depths of the profile grooves increase towards the tooth base, so that the in this direction generally increasing the thickness of the teeth without affecting the Being able to take advantage of stability.
- Fiber detachment has proven to be useful if between at least two adjacent profile grooves or webs of a profile segment essentially one flat transition segment is arranged. In this case, damage can occur of fibers can be reliably prevented when the transition between the transition segment and at least one adjacent profile web or one adjacent profile groove with a radius of curvature in the range of 0.01-0.05 mm, preferably is rounded about 0.02 mm.
- the at least one profile web and / or the at least one profile groove has a profile height or profile depth of at least 0.02 mm, preferably at least 0.04 mm, particularly preferably has at least 0.05 mm and / or the individual profile grooves or Profile webs of a profile segment a distance in the range of 0.1-0.6 mm, preferably 0.2 - 0.4 mm, particularly preferably about 0.3 mm from each other.
- each tooth flank of a tooth has a profile segment
- the filling can Excessive holding force favoring the set can be prevented when on the one tooth flank arranged profile segment in the tooth base on the tooth tip pointing height direction of the tooth with respect to that arranged on the other tooth flank Profile segment is arranged offset.
- the profile segment arranged on one tooth flank can be a or have more profile grooves, while the profile segment arranged on the other tooth flank can have one or more profile webs.
- the teeth are usually in a perpendicular to the Longitudinal direction of the cutting plane from the tooth base in the direction of the Tapering the tip of the tooth has proven to be useful if the tooth tip is closer to the tooth base Profile segment at least one profile groove and / or that arranged closer to the tooth tip Profile segment has at least one profile web.
- the tooth backs of the Saw teeth according to the invention be profiled in a manner known per se, wherein the tooth back of at least one tooth at least one in the direction of the tooth base has a convex section merging into a concave section.
- Such Sets are described in DE 100 12 561. The disclosure content of this writing is hereby expressly referenced with regard to the profiling of the tooth back included in this description.
- sawtooth wires is a method of manufacturing these sawtooth wires, in which a Starting material is formed into a wire having a sheet section and then Saw teeth are punched into this section of sheet essentially thereby that the sheet section is profiled during the molding process.
- the sawtooth wire 10 shown in Fig. 1 for producing a set for the Removal roller of a carding machine comprises a foot region 20 with a foot flank 22, which merges via a shoulder 26 into a tooth flank of a leaf section 30 and one Foot flank 24, which is aligned with a tooth flank 34.
- the leaf section is shown in Fig. 1 and itself Cutting plane extending perpendicular to the longitudinal direction of the wire from the tooth flanks 32 and 34, the sheet starting from the foot section 20 in the direction tapered to the tooth tips 36.
- Each of the tooth flanks 32 and 34 has a profile segment 40 and 50, respectively both profile segments 40 and 50 between the tooth base and the tooth syringe 36 in the Blade section 30 trained teeth are arranged.
- the profile segment 50 with respect to the profile segment 40 arranged offset. This points closer to the tooth base and in the profile segment 50 arranged in total with the tooth flank 34 aligned with the foot flank 24 four profile grooves 52, while the profile segment arranged closer to the tooth tip 36 40 comprises a total of four profile webs 42. How particularly clear the detail display 2, are essentially between the individual profile webs 42 flat transition segments 44 arranged. The vertices of the in of the cutting plane running perpendicular to the longitudinal direction of the wire Profile webs a distance d1 of 0.29 mm.
- the radius of curvature R1 of the arcuate-edged profile webs is perpendicular to the longitudinal direction of the wire running sectional plane in the embodiment shown in the drawing Invention 0.15 mm.
- the transition between the transition section 44 and the profile webs 42 is rounded off with a radius of curvature R2 of 0.02 mm.
- the height h1 of the Profile webs 42 is in the embodiment of the invention shown in the drawing 0.05 mm.
- a substantially flat transition segment 54 is also between the individual Profile grooves 52 of the profile segment 50 arranged.
- the profile grooves 52 of the profile segment 50 are also edged with an arc, in this case too, the radius of curvature R3 of the profile grooves 52 is perpendicular to the longitudinal direction of the wire 10 cutting plane is 0.15 mm.
- the tread grooves 52 are arranged at a distance d2 of 0.29 mm from each other.
- the Transition between the profile grooves 52 and the transition segment 54 is with a Radius of curvature R4 of 0.02 mm rounded.
- the one shown in the drawing Embodiment of the invention is the depth h2 of the profile grooves 52 for all profile grooves 52 0.05 mm.
- profile segments include both profile grooves and profile webs.
- the tread grooves can increase in the direction of the foot section 20 Show profile depth. It is essential in the context of the invention that the profile segments not beyond the incision depth in the direction of the foot section 20 extend.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Corsets Or Brassieres (AREA)
Abstract
Description
Die Erfindung betrifft einen Sägezahndraht zur Herstellung einer Sägezahn-Ganzstahlgarnitur für den Abnehmer und/oder die Abnahmewalze einer Krempelmaschine oder Karde mit einer Mehrzahl von in Längsrichtung des Drahtes hintereinander angeordneten Zähnen, von denen jeder eine sich ausgehend von einem Zahngrund in Richtung auf eine Zahnspitze erstreckende Zahnbrust sowie einen über zwei sich parallel zur Längsrichtung des Drahtes erstreckende Zahnflanken mit der Zahnbrust verbundenen und sich ausgehend von der Zahnspitze in Richtung auf den folgenden Zahngrund erstreckenden Zahnrücken aufweist, sowie ein Verfahren zum Herstellen derartiger Sägezahndrähte.The invention relates to a sawtooth wire for producing a sawtooth all-steel set for the customer and / or the take-off roller of a carding machine or Card with a plurality of one behind the other in the longitudinal direction of the wire Teeth, each one starting from a tooth base towards one Tooth tip extending tooth face and one over two parallel to the longitudinal direction of the wire extending tooth flanks connected to the tooth face and starting out tooth back extending from the tooth tip in the direction of the following tooth base has, and a method for producing such sawtooth wires.
Krempelmaschinen und Karden werden bei der Herstellung von Garnen zur Ausrichtung und Reinigung der die Garne bildenden Textilfasern eingesetzt. Dazu werden die Textilfasern mit Hilfe von Zuführwalzen einem sogenannten Tambour vorgelegt. Dabei handelt es sich um ein walzenförmiges Element, welches auf seiner Mantelfläche mit einer Häkchen- oder Sägezahn-Ganzstahlgarnitur versehen ist und um die Walzenachse gedreht wird. Die Tambour-Garnitur bewirkt ggf. zusammen mit über die Mantelfläche des Tambours verteilt angeordneten Deckelstäben im Verlauf der Drehung des Tambours eine Ausrichtung und Reinigung der zugeführten Textilfasern. Nach diesem Ausrichtungs- und Reinigungsvorgang wird das damit erhaltene Faservlies mit Hilfe von sogenannten Abnehmerund/oder Abnahmewalzen von dem Tambour entfernt und der weiteren Verarbeitung zugeführt. Üblicherweise weisen die Abnehmer- bzw. Abnahmewalzen im Bereich ihrer Mantelfläche ebenfalls eine Sägezahn-Ganzstahlgarnitur auf, die im Verlauf ihrer Drehung in das von dem Tambour bzw. einer Abnehmerwalze mitgeführte Faservlies eingreift und dieses von dem Tambour bzw. der Abnehmerwalze abzieht.Carding machines and cards are used in the production of yarns for alignment and cleaning of the textile fibers forming the yarns. To do this, the Textile fibers presented with the help of feed rollers a so-called drum. Acting it is a roller-shaped element, which with a Checkmark or sawtooth all-steel set is provided and rotated around the roller axis becomes. The drum set, if necessary, works together with the outer surface of the drum distributed flat bars an alignment in the course of the rotation of the drum and cleaning of the supplied textile fibers. After this alignment and cleaning process the fiber fleece obtained with the help of so-called takers and / or Removal rollers removed from the drum and fed for further processing. The pickup or pickup rollers usually have in the area of their lateral surface also a sawtooth all-steel set, which in the course of its rotation into the engages fiber fleece carried by the reel or a take-off roller and this pulls off the reel or the take-off roller.
Im besonderen bei der Bearbeitung besonders feintitriger Fasern aus natürlichen oder synthetischen Polymeren hat es sich gezeigt, daß die Übergabe des Faservlieses von dem Tambour auf die Abnehmer- bzw. Abnahmewalze Schwierigkeiten bereitet. Das führt zu einer Füllung der Tambour-Garnitur mit nicht abgenommenem Fasermaterial, welche eine Mangelhafte Ausrichtung und Reinigung der zugeführten Textilfasern mit dem Tambour zum Ergebnis hat.Especially when processing particularly fine titre fibers from natural or synthetic polymers, it has been shown that the transfer of the nonwoven from the drum on the pick-up or take-off roller causes difficulties. Leading to fill the drum set with non-removed fiber material, which inadequate alignment and cleaning of the supplied textile fibers with the drum has the result.
Weiter hat es sich gezeigt, daß sich das von der Abnehmerwalze abgenommene Faservlies im besonderen bei höheren Produktionsgewichten frühzeitig von der Abnehmer- bzw. Abnahmewalze löst, was zu Problemen bei der Weiterverarbeitung des Fasermaterials führen kann.It has also been shown that that removed from the take-off roller Nonwoven in particular with higher production weights from the customer or removal roller, which leads to problems in the further processing of the fiber material can lead.
Zur Behebung dieser Probleme wurde bereits vorgeschlagen, die Sägezähne der Sägezahn-Ganzstahlgarnituren von Abnehmer- bzw. Abnahmewalze mit seitlichen Rilleneinwalzungen zu versehen. Es hat sich jedoch gezeigt, daß im besonderen bei Hochleistungskarden mit Produktionsleistungen von 80 kg oder mehr bei den zum Erhalt dieser Produktionsleistung notwendigen hohen Umfangsgeschwindigkeiten des Abnehmers bzw. der Abnahmewalze trotz der die Haltekraft fördernden Rilleneinwalzungen eine frühzeitige Ablösung des Faservlieses von dem Abnehmer bzw. der Abnahmewalze auftritt.To remedy these problems, the saw teeth of the Sawtooth all-steel sets of pick-up and take-off rolls with grooved grooves on the side to provide. However, it has been shown that especially in high-performance cards with production capacities of 80 kg or more in order to maintain this Production performance necessary high peripheral speeds of the customer or the take-off roller early despite the grooved rolling to promote the holding force Detachment of the nonwoven from the customer or the take-off roller occurs.
Zur Lösung dieser Probleme wird in der DE 100 12 561 eine Weiterbildung der bekannten Sägezahndrähte vorgeschlagen, bei der zusätzlich zu den Rilleneinwalzungen auch noch eine Profilierung der Zahnrücken der Sägezähne vorgesehen ist, bei der mindestens ein Zahn mindestens einen in Richtung auf den Zahngrund in einen konkaven Abschnitt übergehenden konvexen Abschnitt aufweist. Diese Profilierung kann bei den in der genannten Schrift beschriebenen Sägezahndrähten sowohl in Form von Vertiefungen, als auch in Form von Vorsprüngen im Bereich der Zahnrücken ausgeführt sein. Mit derartigen Sägezahndrähten kann eine auch für den Betrieb von Hochleistungskarden ausreichende Haltekraft zur Verfügung gestellt werden. Allerdings hat es sich insbesondere bei der Verarbeitung von Kunstfasern mit einer Stärke von 0,8 - 40 dtex, insbesondere bei silikonisierten Kunstfasern, und auch bei der Bearbeitung feiner Wolle als problematisch herausgestellt, daß mit den in der DE 100 12 561 beschriebenen Sägezahndrähten bei hohen Produktionsgeschwindigkeiten eine zufriedenstellende Garnqualität nicht erreichbar ist.To solve these problems, a further development of the known is described in DE 100 12 561 Sawtooth wires are proposed in addition to the grooving a profiling of the back of the saw teeth is also provided, at least a tooth has at least one towards the tooth base in a concave section transitional convex portion. This profile can be used in the sawtooth wires described both in the form of depressions, as also in the form of projections in the area of the tooth back. With such Sawtooth wires can also be sufficient for the operation of high-performance cards Holding force can be provided. However, it has been particularly in processing of synthetic fibers with a thickness of 0.8 - 40 dtex, especially with siliconized Synthetic fibers, and also found to be problematic when processing fine wool, that with the sawtooth wires described in DE 100 12 561 at high production speeds satisfactory yarn quality cannot be achieved.
Angesichts dieser Probleme im Stand der Technik liegt der Erfindung die Aufgabe zugrunde, Sägezahndrähte zur Herstellung von Ganzstahigarnituren für Abnehmerund/oder Abnahmewalzen einer Krempelmaschine oder Karde bereitzustellen, welche unter gleichzeitiger Sicherstellung hoher Garnqualitäten eine hohe Produktionsgeschwindigkeit erlauben.In view of these problems in the prior art, the object of the invention based on sawtooth wires for the production of all-steel sets for customers and / or To provide take-off rollers of a carding machine or card, which under at the same time ensuring high yarn quality and high production speed allow.
Erfindungsgemäß wird diese Aufgabe durch eine Weiterbildung der bekannten Sägezahndrähte gelöst, die im wesentlichen dadurch gekennzeichnet ist, daß mindestens eine Zahnflanke mindestens eines Sägezahns mindestens ein zwischen der Zahnspitze und dem Zahngrund angeordnetes und mit einer Profilierung versehenes Profilsegment aufweist.According to the invention, this object is achieved by developing the known sawtooth wires solved, which is essentially characterized in that at least one Tooth flank of at least one sawtooth at least one between the tooth tip and the tooth base arranged and provided with a profile segment.
Diese Erfindung geht auf die Erkenntnis zurück, daß die beim Einsatz bekannter Sägezahndrähte beobachteten Probleme darauf zurückzuführen sind, daß sich die Garniturgassen der Ganzstahlgarnitur der Abnehmer und/oder der Abnahmewalzen mit Fasermaterial füllen, wenn zur Herstellung dieser Garnituren Sägezahndrähte eingesetzt werden, welche zum Erhalt der notwendigen Haltekraft eine Flankenprofilierung aufweisen. Bei den erfindungsgemäßen Sägezahndrähten wird dieser Mangel dadurch behoben, daß die zur Schaffung der benötigten Haltekraft erforderlichen Profilierungen nur zwischen dem Zahngrund und der Zahnspitze vorgesehen sind und sich nicht über die Zahneinschnittiefe hinaus längs der Blattflanke in Richtung auf den Zahnfuß erstrecken. Auf diese Weise kann einerseits eine genügende Haltekraft für die von dem Tambour oder einem anderen vorgelagerten Bearbeitungssegment abgenommenen Fasern bereitgestellt werden, während andererseits die Entfernung der so abgenommenen Fasern von der Garnitur ohne Probleme möglich ist, wodurch letztlich eine Füllung der Garniturgassen verhindert wird. Das erlaubt die Herstellung hochwertiger Garne mit hohen Produktionsgeschwindigkeiten. This invention is based on the knowledge that those known when used Sawtooth wires have seen problems due to the fact that the assembly lanes the all-steel clothing of the customers and / or the take-off rollers with fiber material fill if sawtooth wires are used to manufacture these sets, which have a flank profile to maintain the necessary holding force. Both Sawtooth wires according to the invention this defect is remedied by the fact that the Creation of the required holding force required profiles only between the tooth base and the tooth tip are provided and do not extend beyond the tooth incision depth extend along the side of the blade towards the tooth base. That way on the one hand, a sufficient holding force for those in front of the drum or another Machined segment removed fibers are provided while on the other hand, the removal of the fibers thus removed from the clothing without Problems are possible, which ultimately prevents filling of the clothing alleys. This allows the production of high quality yarns at high production speeds.
Herstellungstechnisch kann das zwischen dem Zahngrund und der Zahnspitze vorgesehene Profilsegment besonders einfach bereitgestellt werden, wenn es mindestens einen vorzugsweise etwa parallel zur Längsrichtung des Drahtes verlaufenden Profilsteg und/oder mindestens eine vorzugsweise etwa parallel zur Längsrichtung des Drahtes verlaufende Profilrille aufweist, weil bei derartigen Sägezahndrähten die Profilierung gleichzeitig mit der sonstigen Formgebung des Drahtes erfolgen kann. Dabei ist es herstellungstechnisch besonders günstig, wenn das mindestens eine Profilrille aufweisende Profilsegment in einer mit der daran angrenzenden Fußflanke fluchtenden Zahnflanke angeordnet ist.In terms of production technology, that which is provided between the tooth base and the tooth tip Profile segment can be provided particularly easily if there is at least one preferably approximately parallel to the longitudinal direction of the wire profile web and / or at least one preferably running approximately parallel to the longitudinal direction of the wire Profile groove, because with such sawtooth wires, the profiling at the same time can take place with the other shaping of the wire. It is manufacturing technology particularly favorable if the profile segment having at least one profile groove arranged in a tooth flank aligned with the adjoining foot flank is.
Zur Vermeidung von Beschädigungen der Fasern bzw. zum Erhalt eines gewünschten Stapelverlaufs hat es sich als besonders günstig erwiesen, wenn mindestens ein Profilsteg und/oder mindestens eine Profilrille in einer senkrecht zur Längsrichtung des Profilstegs und/oder der Profilrille verlaufenden Schnittebene zumindest abschnittweise bogenförmig berandet ist, weil so die Bildung scharfer Kanten im Verlauf des Profilsegmentes vermieden wird. Im Sinne der Bereitstellung einer hohen Haltekraft bei gleichzeitiger Vermeidung von Faserbeschädigungen und Gewährleistung einer vollständigen Faserentfernung von der Garnitur hat es sich als besonders zweckmäßig erwiesen, wenn der bogenförmig berandete Abschnitt in einer senkrecht zur Längsrichtung des Profilstegs bzw. der Profilrille verlaufenden Schnittebene einen Krümmungsradius im Bereich von 0,05 - 0,5 mm, vorzugsweise 0,1 - 0,3 mm, besonders bevorzugt etwa 0,15 mm aufweist.To avoid damage to the fibers or to obtain a desired one It has proven to be particularly favorable when the stack progresses if at least one Profile web and / or at least one profile groove in a perpendicular to the longitudinal direction of the profile web and / or the sectional plane running at least in sections in an arcuate manner is bordered because this way the formation of sharp edges in the course of the profile segment is avoided. In terms of providing a high holding force while avoiding it of fiber damage and ensuring complete fiber removal From the set, it has proven to be particularly useful if the arc bordered section in a perpendicular to the longitudinal direction of the profile web or the Cutting plane running profile groove a radius of curvature in the range of 0.05 - 0.5 mm, preferably 0.1-0.3 mm, particularly preferably about 0.15 mm.
Wenn mindestens eines der Profilsegmente eine Mehrzahl von etwa parallel zur Längsrichtung des Drahtes verlaufenden Profilrillen aufweist, hat es sich zur Sicherstellung einer vollständigen Ablösung des Faservlieses von der Garnitur bei gleichzeitiger Gewährleistung einer hohen Haltekraft und hinreichenden Stabilität der sich üblicherweise von dem Zahngrund in Richtung auf die Zahnspitze verjüngenden Zähnen als zweckmäßig erwiesen, wenn mindestens eine der Profilrillen eine geringere Profiltiefe aufweist als die auf der dem Zahngrund zugewandten Seite dieser Profilrille angeordnete Profilrille. Das bedeutet, daß sich die Profiltiefen der Profilrillen in Richtung auf den Zahngrund erhöhen, um so die in dieser Richtung im allgemeinen zunehmende Dicke der Zähne ohne Beeinträchtigung der Stabilität gut ausnutzen zu können.If at least one of the profile segments has a plurality of approximately parallel to the Has longitudinal grooves of the wire profile grooves, it has to ensure a complete detachment of the nonwoven fabric from the clothing with simultaneous guarantee a high holding force and sufficient stability which is usually different from that Tooth base in the direction of the teeth tapering to the tip of the tooth has proven to be expedient, if at least one of the profile grooves has a smaller profile depth than that on the Side of this profile groove facing tooth base arranged profile groove. It means that the profile depths of the profile grooves increase towards the tooth base, so that the in this direction generally increasing the thickness of the teeth without affecting the Being able to take advantage of stability.
Zum Erhalt eines guten Kompromisses zwischen Haltekraft einerseits und vollständiger Faserablösung andererseits hat es sich als zweckmäßig erwiesen, wenn zwischen mindestens zwei benachbarten Profilrillen bzw. -stegen eines Profilsegmentes ein im wesentlichen ebenes Übergangssegment angeordnet ist. In diesem Fall kann eine Beschädigung der Fasern zuverlässig verhindert werden, wenn der Übergang zwischen dem Übergangssegment und mindestens einem daran angrenzenden Profilsteg bzw. einer daran angrenzenden Profilrille mit einem Krümmungsradius im Bereich von 0,01 - 0,05 mm, vorzugsweise etwa 0,02 mm abgerundet ist.To get a good compromise between holding power on the one hand and more complete Fiber detachment, on the other hand, has proven to be useful if between at least two adjacent profile grooves or webs of a profile segment essentially one flat transition segment is arranged. In this case, damage can occur of fibers can be reliably prevented when the transition between the transition segment and at least one adjacent profile web or one adjacent profile groove with a radius of curvature in the range of 0.01-0.05 mm, preferably is rounded about 0.02 mm.
Im besonderen bei der Verarbeitung von Kunstfasern, insbesondere silikonisierten Kunstfasern mit einer Stärke von 0,8 - 40 dtex hat es sich im Sinne der Herstellung guter Garnqualitäten mit hohen Produktionsgeschwindigkeiten als besonders zweckmäßig erwiesen, wenn der mindestens eine Profilsteg und/oder die mindestens einer Profilrille eine Profilhöhe bzw. Profiltiefe von mindestens 0,02 mm, vorzugsweise mindestens 0,04 mm, besonders bevorzugt mindestens 0,05 mm aufweist und/oder die einzelnen Profilrillen bzw. Profilstege eines Profilsegmentes einen Abstand im Bereich von 0,1 - 0,6 mm, vorzugsweise 0,2 - 0,4 mm, besonders bevorzugt etwa 0,3 mm voneinander aufweisen.Especially when processing synthetic fibers, especially siliconized ones Synthetic fibers with a thickness of 0.8 - 40 dtex have become good in terms of manufacturing Yarn qualities with high production speeds proved to be particularly useful, if the at least one profile web and / or the at least one profile groove has a profile height or profile depth of at least 0.02 mm, preferably at least 0.04 mm, particularly preferably has at least 0.05 mm and / or the individual profile grooves or Profile webs of a profile segment a distance in the range of 0.1-0.6 mm, preferably 0.2 - 0.4 mm, particularly preferably about 0.3 mm from each other.
Wenn jede Zahnflanke eines Zahns ein Profilsegment aufweist, kann eine die Füllung der Garnitur begünstigende übermäßige Haltekraft verhindert werden, wenn das auf der einen Zahnflanke angeordnete Profilsegment in der vom Zahngrund auf die Zahnspitze weisenden Höhenrichtung des Zahns bzgl. dem auf der anderen Zahnflanke angeordneten Profilsegment versetzt angeordnet ist.If each tooth flank of a tooth has a profile segment, the filling can Excessive holding force favoring the set can be prevented when on the one tooth flank arranged profile segment in the tooth base on the tooth tip pointing height direction of the tooth with respect to that arranged on the other tooth flank Profile segment is arranged offset.
Dabei kann das auf der einen Zahnflanke angeordnete Profilsegment eine oder mehr Profilrillen aufweisen, während das auf der anderen Zahnflanke angeordnete Profilsegment einen oder mehrere Profilstege aufweisen kann.The profile segment arranged on one tooth flank can be a or have more profile grooves, while the profile segment arranged on the other tooth flank can have one or more profile webs.
Im Hinblick auf den Erhalt einer zufriedenstellenden Stabilität der Zähne hat es sich im Hinblick auf die Tatsache, daß die Zähne sich üblicherweise in einer senkrecht zur Längsrichtung des Drahtes verlaufenden Schnittebene vom Zahngrund in Richtung auf die Zahnspitze verjüngen als zweckmäßig erwiesen, wenn das näher am Zahngrund angeordnete Profilsegment mindestens eine Profilrille und/oder das näher an der Zahnspitze angeordnete Profilsegment mindestens einen Profilsteg aufweist.In terms of maintaining a satisfactory stability of the teeth, it has in view of the fact that the teeth are usually in a perpendicular to the Longitudinal direction of the cutting plane from the tooth base in the direction of the Tapering the tip of the tooth has proven to be useful if the tooth tip is closer to the tooth base Profile segment at least one profile groove and / or that arranged closer to the tooth tip Profile segment has at least one profile web.
Zusätzlich zu der Profilierung der Zahnflanken können auch die Zahnrücken der Zähne erfindungsgemäßer Sägezahndrähte in an sich bekannter Weise profiliert sein, wobei der Zahnrücken mindestens eines Zahnes mindestens einen in Richtung auf den Zahngrund in einen konkaven Abschnitt übergehenden konvexen Abschnitt aufweist. Derartige Garnituren sind in der DE 100 12 561 beschrieben. Der Offenbarungsgehalt dieser Schrift wird hinsichtlich der Profilierung der Zahnrücken hiermit durch ausdrückliche Inbezugnahme in diese Beschreibung aufgenommen.In addition to profiling the tooth flanks, the tooth backs of the Saw teeth according to the invention be profiled in a manner known per se, wherein the tooth back of at least one tooth at least one in the direction of the tooth base has a convex section merging into a concave section. such Sets are described in DE 100 12 561. The disclosure content of this writing is hereby expressly referenced with regard to the profiling of the tooth back included in this description.
Wie der vorstehenden Erläuterung erfindungsgemäßer Sägezahndrähte zu entnehmen ist, zeichnet sich ein Verfahren zum Herstellen dieser Sägezahndrähte, bei denen ein Ausgangsmaterial zu einem einen Blattabschnitt aufweisenden Draht geformt wird und anschließend Sägezähne in diesen Blattabschnitt gestanzt werden im wesentlichen dadurch aus, daß der Blattabschnitt während des Formungsvorgangs profiliert wird.As can be seen from the above explanation of sawtooth wires according to the invention is a method of manufacturing these sawtooth wires, in which a Starting material is formed into a wire having a sheet section and then Saw teeth are punched into this section of sheet essentially thereby that the sheet section is profiled during the molding process.
Nachstehend wird die Erfindung unter Bezugnahme auf die Zeichnung, auf die hinsichtlich aller erfindungswesentlichen und in der Beschreibung nicht näher herausgestellten Einzelheiten ausdrücklich verwiesen wird, erläutert. In der Zeichnung zeigt:
- Fig. 1
- eine Schnittdarstellung eines erfindungsgemäßen Sägezahndrahtes in einer senkrecht zur Längsrichtung des Drahtes verlaufenden Schnittebene,
- Fig. 2
- eine Darstellung des in Fig. 1 mit A bezeichneten Details des Sägezahndrahtes und
- Fig. 3
- eine Darstellung des in Fig. 1 mit B bezeichneten Details des Sägezahndrahtes.
- Fig. 1
- 2 shows a sectional illustration of a sawtooth wire according to the invention in a cutting plane running perpendicular to the longitudinal direction of the wire,
- Fig. 2
- a representation of the details denoted in Fig. 1 of the sawtooth wire and
- Fig. 3
- a representation of the designated in Fig. 1 with B details of the sawtooth wire.
Der in Fig. 1 dargestellte Sägezahndraht 10 zur Herstellung einer Garnitur für die
Abnahmewalze einer Krempelmaschine umfaßt einen Fußbereich 20 mit einer Fußflanke
22, die über einen Absatz 26 in eine Zahnflanke eines Blattabschnitts 30 übergeht und einer
Fußflanke 24, die mit einer Zahnflanke 34 fluchtet. In dem Blattabschnitt 30 sind eine Mehrzahl
von in der Zeichnung nicht im Detail dargestellte Sägezähne durch entsprechende
Stanzvorgänge ausgebildet. Der Blattabschnitt wird in der in Fig. 1 dargestellten und sich
senkrecht zur Längsrichtung des Drahtes erstreckenden Schnittebene von den Zahnflanken
32 und 34 begrenzt, wobei sich das Blatt ausgehend von dem Fußabschnitt 20 in Richtung
auf die Zahnspitzen 36 verjüngt. The
Jede der Zahnflanken 32 und 34 weist ein Profilsegment 40 bzw. 50 auf, wobei
beide Profilsegmente 40 und 50 zwischen dem Zahngrund und der Zahnspritze 36 der im
Blattabschnitt 30 ausgebildeten Zähne angeordnet sind.Each of the
In der durch den Pfeil P angedeuteten Höhenrichtung ist das Profilsegment 50 bzgl.
dem Profilsegment 40 versetzt angeordnet. Dabei weist das näher am Zahngrund und in
der mit der Fußflanke 24 fluchtenden Zahnflanke 34 angeordnete Profilsegment 50 insgesamt
vier Profilrillen 52 auf, während das näher an der Zahnspitze 36 angeordnete Profilsegment
40 insgesamt vier Profilstege 42 umfaßt. Wie besonders deutlich der Detaildarstellung
in Fig. 2 zu entnehmen ist, sind zwischen den einzelnen Profilstegen 42 im wesentlichen
ebene Übergangssegmente 44 angeordnet. Dabei weisen die Scheitelpunkte der in
der senkrecht zur Längsrichtung des Drahtes verlaufenden Schnittebene bogenförmig berandeten
Profilstege einen Abstand d1 von 0,29 mm auf. Der Krümmungsradius R1 der
bogenförmig berandeten Profilstege beträgt in der senkrecht zur Längsrichtung des Drahtes
verlaufenden Schnittebene bei der in der Zeichnung dargestellten Ausführungsform der
Erfindung 0,15 mm. Der Übergang zwischen dem Übergangsabschnitt 44 und den Profilstegen
42 ist mit einem Krümmungsradius R2 von 0,02 mm abgerundet. Die Höhe h1 der
Profilstege 42 beträgt bei der in der Zeichnung dargestellten Ausführungsform der Erfindung
0,05 mm.In the height direction indicated by the arrow P, the
Wie besonders deutlich in Fig. 3 dargestellt ist, ist auch zwischen den einzelnen
Profilrillen 52 des Profilsegmentes 50 ein im wesentlichen ebenes Übergangssegment 54
angeordnet. Die Profilrillen 52 des Profilsegmentes 50 sind ebenfalls bogenförmig berandet,
wobei auch in diesem Fall der Krümmungsradius R3 der Profilrillen 52 in einer senkrecht
zur Längsrichtung des Drahtes 10 verlaufenden Schnittebene 0,15 mm beträgt. Die Profilrillen
52 sind in einem Abstand d2 von ebenfalls 0,29 mm voneinander angeordnet. Der
Übergang zwischen den Profilrillen 52 und dem Übergangssegment 54 ist mit einem
Krümmungsradius R4 von 0,02 mm abgerundet. Bei der in der Zeichnung dargestellten
Ausführungsform der Erfindung beträgt die Tiefe h2 der Profilrillen 52 für alle Profilrillen 52
0,05 mm.As is particularly clearly shown in Fig. 3, is also between the
Die Erfindung ist nicht auf die anhand der Zeichnung erläuterte Ausführungsform
beschränkt. Vielmehr ist auch an den Einsatz von Sägezahndrähten gedacht, bei denen nur
eine Zahnflanke mit einem Profilsegment ausgestattet ist. Ferner können auf beiden Zahnflanken
angeordnete Profilsegmente sowohl Profilrillen als auch Profilstege umfassen. Darüber
hinaus können die Profilrillen eine in Richtung auf den Fußabschnitt 20 zunehmende
Profiltiefe aufweisen. Wesentlich ist im Rahmen der Erfindung allerdings, daß sich die Profilsegmente
nicht über die Zahneinschnittiefe hinaus in Richtung auf den Fußabschnitt 20
erstrecken.The invention is not based on the embodiment explained with reference to the drawing
limited. Rather, the use of sawtooth wires is also intended, in which only
a tooth flank is equipped with a profile segment. Furthermore, on both tooth flanks
arranged profile segments include both profile grooves and profile webs. About that
in addition, the tread grooves can increase in the direction of the
Claims (15)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10247215 | 2002-10-10 | ||
DE10247215A DE10247215B4 (en) | 2002-10-10 | 2002-10-10 | sawtooth |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1408142A1 true EP1408142A1 (en) | 2004-04-14 |
EP1408142B1 EP1408142B1 (en) | 2007-01-24 |
Family
ID=32010418
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03022645A Expired - Lifetime EP1408142B1 (en) | 2002-10-10 | 2003-10-06 | Saw tooth wire for card clothing |
Country Status (14)
Country | Link |
---|---|
US (1) | US6920671B2 (en) |
EP (1) | EP1408142B1 (en) |
JP (1) | JP2004131920A (en) |
KR (1) | KR20040032795A (en) |
CN (1) | CN100385050C (en) |
AT (1) | ATE352645T1 (en) |
AU (1) | AU2003252872A1 (en) |
BR (1) | BR0304467A (en) |
CA (1) | CA2444941A1 (en) |
DE (2) | DE10247215B4 (en) |
ES (1) | ES2278105T3 (en) |
MX (1) | MXPA03009242A (en) |
PT (1) | PT1408142E (en) |
TW (1) | TW200415272A (en) |
Cited By (5)
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---|---|---|---|---|
WO2011138322A1 (en) * | 2010-05-04 | 2011-11-10 | Nv Bekaert Sa | Wire profile for card clothing |
WO2012019841A1 (en) * | 2010-08-09 | 2012-02-16 | Nv Bekaert Sa | Wire profile for card clothing |
EP2508658A1 (en) * | 2011-04-08 | 2012-10-10 | Graf + Cie AG | Saw tooth fitting |
EP2808429A1 (en) | 2013-05-27 | 2014-12-03 | Groz-Beckert KG | Wire for a roller of a carding machine |
EP2918710A1 (en) * | 2014-03-12 | 2015-09-16 | Groz-Beckert KG | Card clothing wire and method for the preparation of staple fibre non-woven fabrics |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6113731B2 (en) * | 2011-09-15 | 2017-04-12 | グローツ−ベッカート コマンディトゲゼルシャフト | Card wire with improved tooth shape |
US9433882B2 (en) * | 2012-02-20 | 2016-09-06 | Nv Bekaert Sa | Metal fiber web based filter |
EP2944712B1 (en) * | 2014-05-16 | 2018-09-05 | Groz-Beckert KG | Metallic card wire for card clothing |
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-
2003
- 2003-10-06 PT PT03022645T patent/PT1408142E/en unknown
- 2003-10-06 AT AT03022645T patent/ATE352645T1/en not_active IP Right Cessation
- 2003-10-06 EP EP03022645A patent/EP1408142B1/en not_active Expired - Lifetime
- 2003-10-06 ES ES03022645T patent/ES2278105T3/en not_active Expired - Lifetime
- 2003-10-06 DE DE50306360T patent/DE50306360D1/en not_active Expired - Lifetime
- 2003-10-07 TW TW092127777A patent/TW200415272A/en unknown
- 2003-10-08 AU AU2003252872A patent/AU2003252872A1/en not_active Withdrawn
- 2003-10-08 US US10/681,832 patent/US6920671B2/en not_active Expired - Fee Related
- 2003-10-09 MX MXPA03009242A patent/MXPA03009242A/en active IP Right Grant
- 2003-10-09 BR BR0304467-0A patent/BR0304467A/en not_active IP Right Cessation
- 2003-10-09 CA CA002444941A patent/CA2444941A1/en not_active Abandoned
- 2003-10-10 CN CNB2003101181059A patent/CN100385050C/en not_active Expired - Fee Related
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- 2003-10-10 KR KR1020030070515A patent/KR20040032795A/en not_active Application Discontinuation
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EP2918710A1 (en) * | 2014-03-12 | 2015-09-16 | Groz-Beckert KG | Card clothing wire and method for the preparation of staple fibre non-woven fabrics |
WO2015135982A1 (en) * | 2014-03-12 | 2015-09-17 | Groz-Beckert Kg | Clothing wire and method for producing staple fibre nonwovens |
Also Published As
Publication number | Publication date |
---|---|
DE10247215A1 (en) | 2004-04-22 |
US20040128800A1 (en) | 2004-07-08 |
CN1500921A (en) | 2004-06-02 |
BR0304467A (en) | 2004-08-31 |
CA2444941A1 (en) | 2004-04-10 |
JP2004131920A (en) | 2004-04-30 |
KR20040032795A (en) | 2004-04-17 |
MXPA03009242A (en) | 2005-04-11 |
EP1408142B1 (en) | 2007-01-24 |
DE10247215B4 (en) | 2008-07-24 |
DE50306360D1 (en) | 2007-03-15 |
AU2003252872A1 (en) | 2004-04-29 |
TW200415272A (en) | 2004-08-16 |
PT1408142E (en) | 2007-03-30 |
US6920671B2 (en) | 2005-07-26 |
ATE352645T1 (en) | 2007-02-15 |
CN100385050C (en) | 2008-04-30 |
ES2278105T3 (en) | 2007-08-01 |
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