EP1408142B1 - Saw tooth wire for card clothing - Google Patents
Saw tooth wire for card clothing Download PDFInfo
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- EP1408142B1 EP1408142B1 EP03022645A EP03022645A EP1408142B1 EP 1408142 B1 EP1408142 B1 EP 1408142B1 EP 03022645 A EP03022645 A EP 03022645A EP 03022645 A EP03022645 A EP 03022645A EP 1408142 B1 EP1408142 B1 EP 1408142B1
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- Prior art keywords
- profile
- tooth
- segment
- sawtooth
- wire according
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- 230000007704 transition Effects 0.000 claims description 12
- 238000009960 carding Methods 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000007688 edging Methods 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 4
- 239000000835 fiber Substances 0.000 description 15
- 238000004519 manufacturing process Methods 0.000 description 13
- 238000004140 cleaning Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 229920002994 synthetic fiber Polymers 0.000 description 4
- 239000012209 synthetic fiber Substances 0.000 description 4
- 239000004753 textile Substances 0.000 description 4
- 239000002657 fibrous material Substances 0.000 description 3
- 239000004745 nonwoven fabric Substances 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 235000021189 garnishes Nutrition 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920005615 natural polymer Polymers 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Images
Classifications
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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
-
- 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 garnish for the customer and / or the take-off roll of a carding machine according to the preamble of patent claim 1.
- Carding machines and carding machines are used in the production of yarns for aligning and cleaning the textile fibers forming the yarns.
- the textile fibers are presented by means of feed rollers to a so-called drum. It is a roller-shaped element, which is provided on its outer surface with a check or sawtooth all-steel set and is rotated about the roll axis. If necessary, the spool set, together with cover strips distributed over the lateral surface of the spool, effects alignment during the rotation of the spool and cleaning the supplied textile fibers. After this alignment and cleaning process, the nonwoven fabric thus obtained is removed from the spool by means of so-called picking and / or take-off rollers and fed to further processing.
- the pick-up or take-off rolls in the region of their lateral surface also have a sawtooth all-steel clothing, which engages in the course of their rotation in the entrained by the spool or a doffer roller fleece and this deducted from the spool or the doffer roller.
- nonwoven fabric removed from the doffer roll dissolves at an early stage from the doffer or take-off roll at higher production weights, which can lead to problems in the further processing of the fiber material.
- the present invention seeks to provide sawtooth wires for the production of Ganzstahlgarnituren for picking and / or take-off rolls of a carding machine or carding machine, which allow a high production speed while ensuring high yarn qualities.
- this object is achieved by the specified in the characterizing part of claim 1 development of the known sawtooth wires.
- This invention is based on the finding that the problems observed when using known shegeieredrähte due to the fact that fill the Garniturgassen the all-steel set of customers and / or the take-off rolls with fiber material when used to produce these sets sawtooth wires, which are used to obtain the necessary holding force have a flank profiling.
- this deficiency is remedied in that the profiling required to provide the required holding force are provided only between the tooth base and the tooth tip and do not extend beyond the tooth incision depth along the blade edge in the direction of the tooth root, wherein an undesirable filling of Pickup roller set is avoided by an offset arrangement of profile segments on the tooth flanks.
- the profile segment provided between the tooth base and the tooth tip can be provided particularly simply if it has at least one profile web extending approximately parallel to the longitudinal direction of the wire and / or at least one profile groove extending approximately parallel to the longitudinal direction of the wire, because with such sawtooth wires Profiling can be done simultaneously with the other shape of the wire. It is manufacturing technology particularly favorable when the profile segment having at least one profile groove is arranged in an aligned with the adjoining root flank tooth flank.
- At least one profile web and / or at least one profile groove is bounded arcuately at least in sections in a section plane running perpendicular to the longitudinal direction of the profile web and / or the profile groove because this avoids the formation of sharp edges in the course of the profile segment.
- the arcuate bounded section in a direction perpendicular to the longitudinal direction of the profile web or the profile groove cutting plane has a radius of curvature in the area from 0.05 to 0.5 mm, preferably 0.1 to 0.3 mm, particularly preferably about 0.15 mm.
- At least one of the profile segments has a plurality of approximately parallel to the longitudinal direction of the wire extending profile grooves, it has to ensure complete detachment of the fiber web from the clothing while ensuring a high holding force and sufficient stability of the usually from the tooth base in the direction of the Tooth tip tapering teeth proved to be useful when at least one of the tread grooves has a lower tread depth than the arranged on the tooth base facing side of this tread groove tread groove. This means that the tread depths of the tread grooves increase in the direction of the tooth base so as to be able to make good use of the generally increasing thickness of the teeth in this direction without impairing the stability.
- the at least one profile web and / or the at least one tread groove a profile height or profile depth of at least 0.02 mm, preferably at least 0.04 mm, more preferably at least 0.05 mm and / or the individual tread grooves or profile webs of a profile segment a distance in the range of 0.1 - 0.6 mm, preferably 0.2 to 0.4 mm, more preferably about 0.3 mm from each other.
- the profile segment arranged on one tooth flank can have one or more profile grooves, while the profile segment arranged on the other tooth flank can have one or more profile webs.
- the teeth taper in a direction perpendicular to the longitudinal direction of the wire cutting plane from the tooth base towards the tooth tip, when the closer to the tooth base Having arranged profile segment at least one tread groove and / or arranged closer to the tooth tip profile segment has at least one profile web.
- sawtooth wires can be profiled in a conventional manner, wherein the tooth back of at least one tooth has at least one in the direction of the tooth base in a concave portion passing convex portion.
- Such sets are described in DE 100 12 561. The disclosure of this document is hereby incorporated by reference into this description with regard to the profiling of the tooth backs.
- a method for manufacturing these sawtooth wires in which a raw material is formed into a wire portion having a blade portion and then saw teeth are punched into this blade portion is substantially characterized in that the blade portion during the molding process is profiled.
- the sawtooth wire 10 shown in Fig. 1 for producing a set for the take-off roll of a carding machine comprises a foot portion 20 with a predominantlyflanke 22, which merges via a shoulder 26 in a tooth flank of a blade portion 30 and a predominantlyflanke 24, which is aligned with a tooth flank 34.
- a plurality of saw teeth not shown in detail in the drawing are formed by respective punching operations.
- the blade section is delimited by the tooth flanks 32 and 34 in the sectional plane shown in FIG. 1 and extending perpendicularly to the longitudinal direction of the wire, whereby the blade tapers from the base section 20 in the direction of the tooth tips 36.
- Each of the tooth flanks 32 and 34 has a profile segment 40 or 50, wherein both profile segments 40 and 50 are arranged between the tooth base and the tooth syringe 36 of the teeth formed in the blade section 30.
- the profile segment 50 is arranged offset with respect to the profile segment 40.
- the profile segment 50 arranged closer to the tooth base and in the tooth flank 34 aligned with the flank 24 has a total of four profile grooves 52, while the profile segment 40 arranged closer to the tooth tip 36 comprises a total of four profile webs 42.
- substantially planar transition segments 44 are arranged between the individual profile webs 42.
- the vertices of the profile webs bordered in an arcuate manner in the section plane running perpendicular to the longitudinal direction of the wire have a spacing d1 of 0.29 mm.
- the radius of curvature R1 of the curved profile webs is 0.15 mm in the sectional plane perpendicular to the longitudinal direction of the wire in the embodiment of the invention shown in the drawing.
- 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 0.05 mm in the embodiment of the invention shown in the drawing.
- a substantially planar transition segment 54 is also arranged between the individual profile grooves 52 of the profile segment 50.
- the profile grooves 52 of the profile segment 50 are also bounded arcuate, in which case the radius of curvature R3 of the tread grooves 52 in a direction perpendicular to the longitudinal direction of the wire 10 cutting plane is 0.15 mm.
- the profile grooves 52 are arranged at a distance d2 of also 0.29 mm from each other.
- the transition between the tread grooves 52 and the transition segment 54 is rounded off with a radius of curvature R4 of 0.02 mm.
- the depth h2 of the tread grooves 52 for all tread grooves 52 is 0.05 mm.
- the invention is not limited to the embodiment explained with reference to the drawing. Rather, the use of sawtooth wires is also intended, in which profile segments arranged on both tooth flanks comprise both profile grooves and profile webs. About that In addition, the tread grooves may have a profile depth increasing in the direction of the foot portion 20. It is essential within the scope of the invention, however, that the profile segments do not extend beyond the tooth incision depth in the direction of the foot portion 20.
Landscapes
- 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 nach dem Oberbegriff des Patentanspruch 1.The invention relates to a sawtooth wire for producing a sawtooth all-steel garnish for the customer and / or the take-off roll of a carding machine according to the preamble of patent claim 1.
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 Abnehmer-und/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 carding machines are used in the production of yarns for aligning and cleaning the textile fibers forming the yarns. For this purpose, the textile fibers are presented by means of feed rollers to a so-called drum. It is a roller-shaped element, which is provided on its outer surface with a check or sawtooth all-steel set and is rotated about the roll axis. If necessary, the spool set, together with cover strips distributed over the lateral surface of the spool, effects alignment during the rotation of the spool and cleaning the supplied textile fibers. After this alignment and cleaning process, the nonwoven fabric thus obtained is removed from the spool by means of so-called picking and / or take-off rollers and fed to further processing. Usually, the pick-up or take-off rolls in the region of their lateral surface also have a sawtooth all-steel clothing, which engages in the course of their rotation in the entrained by the spool or a doffer roller fleece and this deducted from the spool or the doffer 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.In particular, in the processing of particularly fine denier fibers of natural or synthetic polymers, it has been found that the transfer of the nonwoven fabric from the drum to the picking or take-off roll causes difficulties. This leads to a filling of the spool set with non-removed fiber material, which has a poor alignment and cleaning of the supplied textile fibers with the spool to 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 the nonwoven fabric removed from the doffer roll dissolves at an early stage from the doffer or take-off roll at higher production weights, which can lead to problems in the further processing of the fiber material.
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 overcome these problems, it has already been proposed to provide the saw teeth of the sawtooth all-steel sets of pick-up and take-off rolls with side grooved rolls. However, it has been shown that in particular at high performance carts with production rates of 80 kg or more in the necessary for obtaining this production high peripheral speeds of the pickup or the pickup roller despite the retaining force promoting Rilleneinwalzungen early detachment of the fiber web from the customer or the Pick-up 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. Sägezahndrähte, deren Zähne im Bereich der Zahnrücken eine Profilierung aufweisen sind auch in der FR 2821863 angegeben.To solve these problems, a further development of the known sawtooth wires is proposed in DE 100 12 561, in which in addition to the Rilleneinwalzungen also profiling the tooth backs of the saw teeth is provided, wherein at least one tooth at least one towards the tooth root in a concave Section has transitional convex portion. This profiling can be carried out in the form of recesses, as well as in the form of protrusions in the region of the tooth back in the sawtooth wires described in the cited document. With such Sawtooth wires can also be provided with a sufficient holding force for the operation of high performance carts. However, it has turned out to be problematic, especially in the processing of synthetic fibers with a thickness of 0.8-40 dtex, especially in siliconized synthetic fibers, and also in the processing of fine wool, that with the sawtooth wires described in DE 100 12 561 at high Production speeds a satisfactory yarn quality is unattainable. Sawtooth wires whose teeth have a profiling in the region of the back of the teeth are also indicated in FR 2821863.
Ferner wird in der DE 40 38 352 A1 vorgeschlagen, Zähne einer Auflösewalzengarnittir mittels einer Oberflächenbearbeitung mit einer Musterung zu versehen.It is also proposed in
Angesichts der Probleme im Stand der Technik liegt der Erfindung die Aufgabe zugrunde, Sägezahndrähte zur Herstellung von Ganzstahlgarnituren für Abnehmer- und/oder Abnahmewalzen einer Krempelmaschine oder Karde bereitzustellen, welche unter gleichzeitiger Sicherstellung hoher Garnqualitäten eine hohe Produktionsgeschwindigkeit erlauben.In view of the problems in the prior art, the present invention seeks to provide sawtooth wires for the production of Ganzstahlgarnituren for picking and / or take-off rolls of a carding machine or carding machine, which allow a high production speed while ensuring high yarn qualities.
Erfindungsgemäß wird diese Aufgabe durch die im kennzeichnenden Teil des Anspruchs 1 angegebene Weiterbildung der bekannten Sägezahndrähte gelöst.According to the invention this object is achieved by the specified in the characterizing part of claim 1 development of the known sawtooth wires.
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, wobei eine unerwünschte Füllung der Abnehmerwalzengarnitur durch eine versetzte Anordnung von Profilsegmenten auf den Zahnflanken vermieden wird. 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 finding that the problems observed when using known Sägezahndrähte due to the fact that fill the Garniturgassen the all-steel set of customers and / or the take-off rolls with fiber material when used to produce these sets sawtooth wires, which are used to obtain the necessary holding force have a flank profiling. In the sawtooth wires according to the invention, this deficiency is remedied in that the profiling required to provide the required holding force are provided only between the tooth base and the tooth tip and do not extend beyond the tooth incision depth along the blade edge in the direction of the tooth root, wherein an undesirable filling of Pickup roller set is avoided by an offset arrangement of profile segments on the tooth flanks. In this way, on the one hand a sufficient holding force for the fibers taken from the spool or other upstream processing segment fibers are provided, while on the other hand, the removal of the fibers so removed from the clothing is possible without problems, which ultimately a filling of Garniturgassen is prevented. This allows the production of high-quality yarns with 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.From a manufacturing point of view, the profile segment provided between the tooth base and the tooth tip can be provided particularly simply if it has at least one profile web extending approximately parallel to the longitudinal direction of the wire and / or at least one profile groove extending approximately parallel to the longitudinal direction of the wire, because with such sawtooth wires Profiling can be done simultaneously with the other shape of the wire. It is manufacturing technology particularly favorable when the profile segment having at least one profile groove is arranged in an aligned with the adjoining root flank tooth flank.
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.In order to avoid damage to the fibers or to obtain a desired stacking profile, it has proven to be particularly favorable if at least one profile web and / or at least one profile groove is bounded arcuately at least in sections in a section plane running perpendicular to the longitudinal direction of the profile web and / or the profile groove because this avoids the formation of sharp edges in the course of the profile segment. In terms of providing a high holding force while avoiding fiber damage and ensuring complete fiber removal from the clothing, it has proven to be particularly useful if the arcuate bounded section in a direction perpendicular to the longitudinal direction of the profile web or the profile groove cutting plane has a radius of curvature in the area from 0.05 to 0.5 mm, preferably 0.1 to 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 longitudinal direction of the wire extending profile grooves, it has to ensure complete detachment of the fiber web from the clothing while ensuring a high holding force and sufficient stability of the usually from the tooth base in the direction of the Tooth tip tapering teeth proved to be useful when at least one of the tread grooves has a lower tread depth than the arranged on the tooth base facing side of this tread groove tread groove. This means that the tread depths of the tread grooves increase in the direction of the tooth base so as to be able to make good use of the generally increasing thickness of the teeth in this direction without impairing the 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 obtain a good compromise between holding power on the one hand and complete fiber separation on the other hand, it has proved to be useful if between at least two adjacent tread grooves or webs of a profile segment a substantially planar transition segment is arranged. In this case, damage to the fibers can be reliably prevented if the transition between the transition segment and at least one adjoining profile web or a profile groove adjacent thereto with a radius of curvature in the range of 0.01 - 0.05 mm, preferably about 0.02 mm is rounded.
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.In particular, in the processing of synthetic fibers, in particular siliconized synthetic fibers with a thickness of 0.8-40 dtex, it has proven to be particularly useful in the sense of producing good yarn qualities with high production speeds, if the at least one profile web and / or the at least one tread groove a profile height or profile depth of at least 0.02 mm, preferably at least 0.04 mm, more preferably at least 0.05 mm and / or the individual tread grooves or profile webs of a profile segment a distance in the range of 0.1 - 0.6 mm, preferably 0.2 to 0.4 mm, more preferably about 0.3 mm from each other.
Das auf der einen Zahnflanke angeordnete Profilsegment kann 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 have one or 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 view of obtaining a satisfactory stability of the teeth, it has proven to be expedient in view of the fact that the teeth taper in a direction perpendicular to the longitudinal direction of the wire cutting plane from the tooth base towards the tooth tip, when the closer to the tooth base Having arranged profile segment at least one tread groove and / or 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 the profiling of the tooth flanks and the tooth backs of the teeth according to the invention sawtooth wires can be profiled in a conventional manner, wherein the tooth back of at least one tooth has at least one in the direction of the tooth base in a concave portion passing convex portion. Such sets are described in DE 100 12 561. The disclosure of this document is hereby incorporated by reference into this description with regard to the profiling of the tooth backs.
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 understood from the above explanation of sawtooth wires according to the present invention, a method for manufacturing these sawtooth wires in which a raw material is formed into a wire portion having a blade portion and then saw teeth are punched into this blade portion is substantially characterized in that the blade portion during the molding process is profiled.
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
- a sectional view of a sawtooth wire according to the invention in a direction perpendicular to the longitudinal direction of the wire cutting plane,
- Fig. 2
- a representation of the designated in Fig. 1 with A detail 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 shown particularly clearly in FIG. 3, a substantially
Die Erfindung ist nicht auf die anhand der Zeichnung erläuterte Ausführungsform beschränkt. Vielmehr ist auch an den Einsatz von Sägezahndrähten gedacht, bei denen 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 limited to the embodiment explained with reference to the drawing. Rather, the use of sawtooth wires is also intended, in which profile segments arranged on both tooth flanks comprise both profile grooves and profile webs. About that In addition, the tread grooves may have a profile depth increasing in the direction of the
Claims (13)
- Sawtooth wire for producing a sawtooth all-steel fitting for the doffer and/or the doffing cylinder of a carding machine or carding engine with a plurality of teeth disposed one behind the other in the longitudinal direction of the wire (10), each of which has a tooth front extending from a tooth base towards a tooth tip (36) and a tooth back extending over two tooth flanks (32, 34) extending parallel to the longitudinal direction of the wire (10), connected to the tooth front and extending from the tooth tip towards the following tooth base, at least one tooth flank (32, 34) having at least one profile segment (40, 50) disposed between the tooth tip (36) and the tooth base and provided with profiling, characterised in that with at least one tooth both tooth flanks (32, 34) have at least one profile segment (40, 50) disposed between the tooth tip and the tooth base, the profile segment (40) disposed on the one tooth flank being disposed offset in relation to the profile segment (50) disposed on the other tooth flank (34) in the height direction of the tooth pointing from the tooth base to the tooth tip.
- The sawtooth wire according to Claim 1, characterised in that the profile segment (40, 50) has at least one profile bar (42) extending preferably approximately parallel to the longitudinal direction of the wire (10) and/or at least one profile groove (52) extending preferably approximately parallel to the longitudinal direction of the wire (10).
- The sawtooth wire according to Claim 2, characterised in that at least one profile bar (42) and/or at least one profile groove (52) has arcuate edging, at least in sections, in a sectional plane extending perpendicularly to the longitudinal direction of the profile bar (42) and/or the profile groove (52).
- The sawtooth wire according to Claim 3, characterised in that the section with the arcuate edging has a radius of curvature (R1, R3) of in the region of between 0.05 and 0.5 mm, preferably between 0.1 and 0.3 mm, and particularly preferably of approximately 0.15 mm in a sectional plane extending perpendicularly to the longitudinal direction of the profile bar (42) or of the profile groove (52).
- The sawtooth wire according to any of Claims 2-4, characterised in that at least one of the profile segments (50) has a plurality of profile grooves (52) extending approximately parallel to the longitudinal direction of the wire, at least one of the profile grooves having a smaller profile depth (h2) than the profile groove disposed on the side of this profile groove facing towards the tooth base.
- The sawtooth wire according to any of Claims 2-5, characterised in that a substantially level transition segment (44, 54) is disposed between at least two adjacent profile grooves (52) and bars (42) of a profile segment (40, 50).
- The sawtooth wire according to Claim 6, characterised in that the transition between the transition segment (44, 54) and at least one adjacent profile bar (42) or one adjacent profile groove (52) is rounded with a radius of curvature (R2, R4) of in the region of between 0.01 - 0.05 mm, and preferably of approximately 0.02 mm.
- The sawtooth wire according to any of Claims 2 - 7, characterised in that the at least one profile bar (42) and/or the at least one profile groove (52) has a profile height (h1) and a profile depth (h2) of at least 0.02 mm, preferably at least 0.04 mm, and particularly preferably at least 0.05 mm.
- The sawtooth wire according to any of Claims 2-8, characterised in that the individual profile grooves (52) and profile bars (42) of a profile segment (40, 50) have a distance between them (dl, d2) of in the region of between 0.1 and 0.6 mm, preferably between 0.2 and 0.4 mm, and particular preferably of approximately 0.3 mm.
- The sawtooth wire according to any of the preceding claims, characterised in that the profile segment (50) disposed closer to the tooth base has at least one profile groove (52) and/or the profile segment (40) disposed closer to the tooth tip (36) has at least one profile bar (42).
- The sawtooth wire according to any of the preceding claims, characterised in that at least one, and preferably each tooth tapers from the tooth base towards the tooth tip (36) in a sectional plane extending perpendicularly to the longitudinal direction of the wire.
- The sawtooth wire according to any of the preceding claims, characterised in that the tooth back of at least one tooth has at least one convex section passing to a concave section towards the tooth base.
- A doffer and/or a doffing cylinder for a carding machine or a carding engine with a sawtooth all-steel fitting produced using a sawtooth wire according to any of Claims 1 - 12.
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 EP1408142A1 (en) | 2004-04-14 |
| EP1408142B1 true 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 (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101760664B1 (en) | 2014-03-12 | 2017-08-04 | 그로츠-베케르트 카게 | Sawtooth wire and method for manufacturing staple-fibre fleeces |
| KR101800477B1 (en) | 2010-05-04 | 2017-11-22 | 그로츠-베케르트 카게 | Wire profile for card clothing |
| KR101914631B1 (en) | 2011-04-08 | 2018-11-05 | 그래프 플러스 씨 아게 | Saw-tooth clothing |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012019841A1 (en) * | 2010-08-09 | 2012-02-16 | Nv Bekaert Sa | Wire profile for card clothing |
| EP2756119B1 (en) * | 2011-09-15 | 2016-03-30 | Groz-Beckert KG | Card wire with improved tooth shape |
| EP2817077B1 (en) * | 2012-02-20 | 2016-04-13 | NV Bekaert SA | Metal fibre web based filter |
| EP2808429B1 (en) | 2013-05-27 | 2017-06-28 | Groz-Beckert KG | Wire for a roller of a carding machine |
| EP2944712B1 (en) * | 2014-05-16 | 2018-09-05 | Groz-Beckert KG | Metallic card wire for card clothing |
Family Cites Families (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2937413A (en) * | 1956-09-27 | 1960-05-24 | John D Hollingsworth | Carding tooth |
| GB854090A (en) * | 1957-02-13 | 1960-11-16 | Gustav Damgaard | Improvements in saw tooth or garnett wire for the rollers or cylinders of textile machines |
| JPS4630266Y1 (en) * | 1966-10-19 | 1971-10-20 | ||
| JPS5128408Y1 (en) * | 1967-09-07 | 1976-07-17 | ||
| JPS5113548Y1 (en) * | 1970-05-07 | 1976-04-12 | ||
| JPS4821127Y1 (en) * | 1970-12-23 | 1973-06-20 | ||
| JPS5076127U (en) * | 1973-10-31 | 1975-07-02 | ||
| JPS5652293Y2 (en) * | 1978-05-25 | 1981-12-05 | ||
| JPS5698875U (en) * | 1979-12-26 | 1981-08-04 | ||
| JPS60181326A (en) * | 1984-02-29 | 1985-09-17 | Iwao Wada | Metallic card clothing |
| JPS6130082U (en) * | 1984-07-20 | 1986-02-22 | 東洋特殊金属工業株式会社 | metal clothing |
| ES2010170A4 (en) * | 1987-12-29 | 1989-11-01 | Graf + Cie Ag | A WIRE SAW TOOTH FROM A SAW TEETH TISSUE PLATE FOR A TEXTILE MACHINE PRODUCING RANDOM FOCUSED WOOL FIBERS |
| JPH01306625A (en) * | 1988-05-30 | 1989-12-11 | Kanai Hiroyuki | Metallic card clothing for spinning machine |
| US4964195A (en) * | 1988-11-18 | 1990-10-23 | Hollingsworth John D | Metallic card clothing |
| DE4038352A1 (en) * | 1990-12-01 | 1992-06-04 | Fritz Stahlecker | Beater roller for sliver opening - has boride treated teeth with recessed patterns on their flanks |
| DE4240026C2 (en) * | 1992-11-28 | 2003-10-16 | Fritz Stahlecker | Set for an opening roller of an OE spinning device |
| GB9307548D0 (en) * | 1993-04-13 | 1993-06-02 | Carclo Eng Group Plc | Fibre processing |
| CZ279649B6 (en) * | 1993-06-03 | 1995-05-17 | Rieter Elitex A.S. | Combing roller of spindleless spinning machine separating device and process for producing thereof |
| DE4436378A1 (en) * | 1994-10-12 | 1996-04-18 | Staedtler & Uhl | Sawtooth set |
| US6185789B1 (en) * | 1997-03-03 | 2001-02-13 | John D. Hollingsworth On Wheels, Inc. | Metallic clothing for carding elements |
| AUPP681098A0 (en) * | 1998-10-30 | 1998-11-19 | Commonwealth Scientific And Industrial Research Organisation | Card wire, especially for doffers and workers |
| DE10012561B4 (en) * | 2000-03-15 | 2004-09-02 | Graf + Cie Ag | sawtooth |
| FR2821863B1 (en) * | 2001-03-08 | 2004-01-02 | Ecc Platt Sa | CARD LINING, ESPECIALLY FOR A COMBINING CYLINDER, WORKING CYLINDER OR CONDENSER CYLINDER |
-
2002
- 2002-10-10 DE DE10247215A patent/DE10247215B4/en not_active Expired - Fee Related
-
2003
- 2003-10-06 ES ES03022645T patent/ES2278105T3/en not_active Expired - Lifetime
- 2003-10-06 AT AT03022645T patent/ATE352645T1/en not_active IP Right Cessation
- 2003-10-06 DE DE50306360T patent/DE50306360D1/en not_active Expired - Lifetime
- 2003-10-06 EP EP03022645A patent/EP1408142B1/en not_active Expired - Lifetime
- 2003-10-06 PT PT03022645T patent/PT1408142E/en unknown
- 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 BR BR0304467-0A patent/BR0304467A/en not_active IP Right Cessation
- 2003-10-09 MX MXPA03009242A patent/MXPA03009242A/en active IP Right Grant
- 2003-10-09 CA CA002444941A patent/CA2444941A1/en not_active Abandoned
- 2003-10-10 CN CNB2003101181059A patent/CN100385050C/en not_active Expired - Fee Related
- 2003-10-10 KR KR1020030070515A patent/KR20040032795A/en not_active Application Discontinuation
- 2003-10-10 JP JP2003352128A patent/JP2004131920A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101800477B1 (en) | 2010-05-04 | 2017-11-22 | 그로츠-베케르트 카게 | Wire profile for card clothing |
| KR101914631B1 (en) | 2011-04-08 | 2018-11-05 | 그래프 플러스 씨 아게 | Saw-tooth clothing |
| KR101760664B1 (en) | 2014-03-12 | 2017-08-04 | 그로츠-베케르트 카게 | Sawtooth wire and method for manufacturing staple-fibre fleeces |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2444941A1 (en) | 2004-04-10 |
| JP2004131920A (en) | 2004-04-30 |
| DE10247215B4 (en) | 2008-07-24 |
| DE50306360D1 (en) | 2007-03-15 |
| ES2278105T3 (en) | 2007-08-01 |
| MXPA03009242A (en) | 2005-04-11 |
| DE10247215A1 (en) | 2004-04-22 |
| TW200415272A (en) | 2004-08-16 |
| KR20040032795A (en) | 2004-04-17 |
| EP1408142A1 (en) | 2004-04-14 |
| ATE352645T1 (en) | 2007-02-15 |
| PT1408142E (en) | 2007-03-30 |
| US6920671B2 (en) | 2005-07-26 |
| CN1500921A (en) | 2004-06-02 |
| BR0304467A (en) | 2004-08-31 |
| CN100385050C (en) | 2008-04-30 |
| US20040128800A1 (en) | 2004-07-08 |
| AU2003252872A1 (en) | 2004-04-29 |
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