EP0928839B1 - Vorrichtung zum Abtragen von Faserflocken und Verfahren zur Herstellung von Zähnen einer Abtragwalze - Google Patents
Vorrichtung zum Abtragen von Faserflocken und Verfahren zur Herstellung von Zähnen einer Abtragwalze Download PDFInfo
- Publication number
- EP0928839B1 EP0928839B1 EP98811142A EP98811142A EP0928839B1 EP 0928839 B1 EP0928839 B1 EP 0928839B1 EP 98811142 A EP98811142 A EP 98811142A EP 98811142 A EP98811142 A EP 98811142A EP 0928839 B1 EP0928839 B1 EP 0928839B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- teeth
- tooth
- steel sheet
- support member
- roller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G7/00—Breaking or opening fibre bales
- D01G7/04—Breaking or opening fibre bales by means of toothed members
Definitions
- the invention relates to a device for removing fiber flakes Fiber bales according to claim 1 and 7 and a method for producing teeth of a removal roller according to claim 16.
- From EP 267 466 is known to be detachable on the circumference of the removal roller to provide fixed teeth.
- the teeth have one of the circumferential contours of the removal roller adapted support surface and are by means of screws and screwed dowels into the roller.
- the teeth are relatively easy to replace.
- the contact surface of the teeth on the outer surface of the roller is formed such that they two spaced support shoulders having. This does not have to exactly match the round outer contour the removal roller must be taken into account when manufacturing the teeth.
- a disadvantage of this design is that the teeth are very stable must be, since they are not on a flat surface on the circumferential surface Contour fit.
- the teeth shown are accordingly made of Cast material made.
- the object of the present invention is the disadvantages of the prior art Eliminate technology, as well as create a removal roller with which Even small flakes reliably and evenly from the fiber bales can be removed. Another job is depending on Requirement with regard to the presented bales, as well as the presented Flake type a specially adapted removal roller through use to create specially matched teeth and tooth arrangements without to have a large number of removal rollers ready. Another The object of the present invention is in the event of damage replace individual teeth quickly and without complex assembly to be able to.
- the removal roller has a polygonal tube as the base body which teeth are interchangeably attached, this advantageously ensures that the teeth on the surfaces of the polygon tube are reliable are attachable.
- the teeth are preferably on the straight Fixed surfaces of the polygon tube. Are they interchangeable on the polygon tube arranged, an exchange of teeth is possible if the teeth worn or due to contamination in the Fiber bales were damaged. Changing teeth can also may be necessary if the tooth pitch is different than the current one or arrangement of the teeth or another tooth shape for ablation of the respective fiber flake material is required.
- the polygon tube according to the invention as the base body is the attachment of the individual teeth, since the individual tooth has a defined and easy to manufacture contact surface receives to the base body.
- the polygon tube has one of the desired number of circumferences Number of corners corresponding to teeth. This means that, for example, at a number of 12 teeth per circumference preferably with a polygonal tube Has 12 corners and accordingly 12 straight surfaces on the circumference.
- the polygonal tube is advantageously composed of two half-shells joined together manufactured. These half shells are easy to fold of a steel sheet can be produced. The two half shells are then for example by welding or screwing together and together form the polygon tube for the base body. As support the shape of the polygonal tube and to accommodate an axis of the Removal roller can be provided webs, which as disks in the Polygon tube are inserted and an additional hold of the polygon tube and the two half shells joined together.
- the carrier advantageously has a bore through which the tooth can be screwed onto the base body.
- the Carrier has on its underside a portion of the outer shape of the Polygonal tube on which the tooth is attached.
- the tooth is made of a bevel Sheet steel formed, with a surface of the folded sheet the carrier and the other surface forms the tooth itself. It is special here easy to make the carrier and the tooth when the trained one Tooth is attached to a flat surface of the base body.
- the arrangement of the tooth on a polygonal tube is particularly useful here which has flat surfaces between the corners. It is with it possible in a simple way, by bending the steel sheet a flat To achieve the surface of the carrier, which with the flat surface of the base body the removal roller corresponds and on the other hand also one to get a flat tooth.
- the carrier advantageously picks up and forms at least two teeth such a double or multiple tooth. Every tooth is using one Polygon tube as the main body of the removal roller of a surface of the polygon tube assigned. As a result, the carrier is sufficient in such a configuration across an edge from one surface to the adjacent surface.
- the Carrier is thereby angled so that two surfaces of the carrier with the two surfaces of the base body correspond. This creates one stable mounting of the carrier with its two or more teeth. On It is no longer possible to twist the support on the polygon tube. It is particularly advantageous if the carrier has two screws the base body is attached, each with a screw and nut is assigned to a surface of the polygon tube.
- the teeth are advantageously arranged on the carrier in such a way that they lie opposite each other in the axial direction of the removal roller on the carrier. This causes a distance between the teeth in the axial direction, which corresponds essentially to the width of the carrier. Are the teeth one assigned to each separate surface of the polygon tube, so also arises in Circumferential direction a distance between the teeth.
- This arrangement has a particularly high stability and protection against rotation of the teeth result. It is a mutual support of the teeth over the wearer possible so that the teeth have enough rigidity to ensure a safe To remove flakes without damaging the teeth. It is also ensured that the flakes are safe and even are taken from the fiber bales and also the fiber flake size, which is removed from the fiber bales are kept as small as possible can. This arrangement also ensures that in the fiber bales no alleys arise, from which fiber flakes no longer exist can be removed. This would disadvantageously become uneven Lead flake removal and thus further processing just as disturbing the removal of the fiber bales.
- the carriers with the teeth arranged thereon are advantageously along a circumferential line of the base body of the removal roller is arranged.
- This Circumferential line forms rows of teeth, which between grate bars, which the better removal of the fiber flakes from the fiber bales by the removal roller are arranged, are.
- the teeth are axially offset from each other, so that no tooth directly on the circumference follows behind the other.
- the distances between the teeth are chosen so that teeth standing close together in the axial direction on the circumference in a row are fastened as far apart as possible. This means that in Seen axially adjacent teeth offset by 180 ° on the circumference are arranged. This arrangement has shown that still smaller flakes than can be removed from the fiber bale.
- High-strength steel sheet has proven itself for the production of teeth and beams, which has a bending radius smaller than the sheet thickness.
- Steel sheet which allows such small radii when folding is for Particularly suitable for use as a tooth and carrier, as a result precise shaping of the teeth is made possible, gaps being avoided, in which fiber flakes get stuck and after collecting one could loosen larger number of fiber flakes again. Such collections would lead to an irregularity of the removed fiber flakes lead and thus adversely affect further processing.
- special good material has proven to be a high-strength steel sheet, which Bending radii allow which are less than 0.5 times the sheet thickness. With such Sheet steel is the danger of fiber flakes that accumulate and later solve again very little.
- the teeth of a removal roller are manufactured in such a way that that the teeth are made of sheet steel.
- the steel sheet is after the tooth and carrier shape was cut out of the steel sheet Surface-treated when flat. Then the steel sheet folded in such a way that a carrier and a tooth are formed.
- the surface treatment only the later ones Tooth tips concerns. This will cause the flat material to be folded facilitated and also is avoided that the surface layer through the folding is damaged.
- Another advantage is that the often very expensive material for surface treatment used sparingly can be, if only the tooth tips, which a surface treatment need to be coated.
- the surface treatment of the Teeth serve as wear protection and cause a longer service life of the Teeth.
- teeth and the carrier are cut from the steel sheet by laser become. This is a quick and automatic production of the multitude of teeth, using a steel sheet with high strength Can be found. It also ensures that the edges of the Teeth no longer need to be reworked, as a burr-free one is created using a laser Cutting the tooth shape is made possible. It is now possible for the first time teeth of this type, including the carrier, are quick and inexpensive in one operation and also to manufacture with the highest accuracy.
- Figure 1 shows a removal roller 1 in a side view.
- a polygon tube 3 On a jetty 5, which is arranged around a shaft 6 and connected to it in a rotationally fixed manner, a polygon tube 3 is arranged.
- the polygon tube consists of two half shells 3a and 3b.
- the half-shells 3a and 3b are each on two bevels 4 connected together.
- the two half-shells 3a are advantageously and 3b welded to the folds 4 and thereby form a solid Connection.
- half-shells 3a and 3b Through the use of half-shells 3a and 3b one is easy manufacture of polygon tube 3 guaranteed. Because of the open shape the half-shells 3a and 3b is the by means of conventional folding devices respective half-shell 3a, 3b can be produced by folding.
- the half shells have a diameter of approx. 200 mm and a length of up to 2 m on.
- the polygon tube 3 it is also possible to use the polygon tube 3 as an aluminum extrusion or as a rolled profile. Essential is that the polygon tube 3 creates surfaces by the folds which the teeth 2 are simply arranged and positioned can. The number of folds preferably corresponds to the number of the teeth required on the circumference of the removal roller 1.
- the teeth 2 are screwed onto the polygon tube 3 according to FIG.
- weld nuts 7 are welded inside the polygon tube.
- the weld nuts 7 are in fixed in position so that it can be assembled without holding the nut can.
- dowels for example are used, which from the outside in prefabricated holes in the Polygonal tube 3 are used and in which the teeth 2 by means of screws be attached.
- dowels claw on the inside of the Polygonal tube 3 such that a secure attachment of the teeth 2 thereby is guaranteed.
- the polygonal tube 3 has bevels 13 on the outside, which of a surface of the polygonal tube 3 to the adjacent surface of the polygonal tube 3 direct. Due to the folds 13, a flat piece of sheet metal becomes one Half shell 3a, 3b received.
- the bevels 13 run over the entire Removal roller 1 in the axial direction.
- a double tooth 15 is a bevel 14 of the double tooth 15 in accordance with the Bend 13 of the polygon tube 3 brought. This will ensure a safe and Positionally accurate attachment of the double tooth 15 ensured because the inclination of the surfaces to one another and the two bevels 13 and 14 a twist-proof positioning of the double tooth 15 on the removal roller 1 is created.
- Each double tooth is shown with two screws in the here Screwed on welding nuts.
- the removal roller according to FIG. 1 has 12 teeth 2 on its circumference. It has been found that with this relatively high number of teeth on Scope of the removal roller 1 a particularly safe flake removal can be achieved is. In particular, the large number of teeth ensures that the flakes are removed from the bale in small units, i.e. that the individual flakes, which are removed from the fiber bale become very small and even.
- FIG. 2 shows a double tooth 15.
- the teeth 2 are on opposite Arranged sides of the carrier 18.
- they are two teeth 2 with regard to the arrangement on the circumference of the removal roller 1 arranged on the carrier 18 as far apart as possible. This means, that the distance between the two teeth 2 in the axial direction about half Rust division corresponds.
- the grating is the distance between there are two grate bars 19 which are used to retain the fiber flakes and thus are provided for better removal of the fiber flakes from the bale.
- the carrier 18 has two bores 16 through which screws into the Weld nuts 7 of the polygon tube 3 are introduced.
- the fold 14 of the double tooth 15 causes the double tooth to extend over one Bend 13 of the polygonal tube 3 from a surface of the polygonal tube 3 to adjacent surface, so that the double tooth is secured against rotation is guaranteed with only one fastening screw per tooth.
- the Use of flat surfaces on the polygon tube 3 and corresponding to this on the carrier 18 allows a very inexpensive manufacture of the double tooth, since only simple bevels produce the Allow double tooth 15.
- the Double tooth only from a flat steel sheet, preferably by means of a Laser cut. Then it is surface treated if necessary. For this a coating 20 is preferably applied to the tooth tips.
- the application of the coating 20 in the flat state is particularly simple to realize. This is the middle area of the still flat double tooth covered and the coating applied. Through the cover of the still flat double tooth, coating material is saved, since it is only for the tooth tips, which later also the higher load exposed. Boronizing has proven particularly advantageous, Nidation or chrome plating of the tooth tips has been proven. With these surface treatments a wear-resistant tooth surface is created, which also resist iron parts embedded in the fiber bale can. After coating the still flat double tooth, the double tooth becomes beveled at the bevels 12 and 14 so that the double tooth on the one hand can be fastened on the polygonal tube 3 and on the other hand the teeth 2 protrude radially from the polygon tube 3.
- Figure 3 shows the distribution of six double teeth on one roller circumference.
- the settlement corresponds the arrangement of the teeth in a row between two grate bars 19.
- the double teeth 15 are arranged such that in the axial direction Removal roller teeth close together on the circumference of a row are attached as far apart as possible.
- the teeth are so axial to each other offset that on the circumference no tooth directly behind the other follows. Teeth close to each other in the axial direction are around 180 ° around the circumference the roller offset from each other.
- the distances in the axial direction of tooth Tooth are very small, so that small flakes come out of the bale be removed.
- the illustrated embodiments show twelve teeth 2 on the circumference a removal roller 1.
- the polygon tube 3 also contain more or fewer bends.
- material for the Teeth 2 has proven to be particularly advantageous in a high-strength steel sheet, which withstands the loads when removing the fiber bales, on the other hand, it allows extremely small bending radii during production.
- the Bending radii should advantageously be smaller than the sheet thickness, especially be advantageously smaller than half the sheet thickness possible to achieve an exact To bend the tooth 2 from the carrier 18 to ensure without Gaps appear, to which fiber flakes get stuck and later again to be able to solve.
- Such a material which the strength properties with corresponding bending properties is, for example Domex 420YP / XP.
- Domex 420YP / XP a material, which the strength properties with corresponding bending properties is, for example Domex 420YP / XP.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Preliminary Treatment Of Fibers (AREA)
Description
- Figur 1
- eine Abtragwalze in der Seitenansicht;
- Figur 2
- einen Doppelzahn;
- Figur 3
- eine Zahnverteilung über einen Walzenumfang.
Claims (19)
- Vorrichtung zum Abtragen von Faserflocken aus Faserballen mit einer Abtragwalze (1), welche mit einer Vielzahl von Zähnen (2) bestückt ist, wobei die Zähne (2) in Umfangsrichtung der Abtragwalze (1) angeordnet sind und einen axialen Abstand voneinander aufweisen, dadurch gekennzeichnet, daß die Abtragwalze (1) ein Vieleckrohr (3) als Grundkörper aufweist, auf welchem Zähne (2) auswechselbar befestigt sind.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Vieleckrohr (3) aus zwei aneinandergefügten, insbesondere geschweißten oder geschraubten Halbschalen (3a, 3b) besteht.
- Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Zähne (2) auf dem Grundkörper aufgeschraubt oder angeschweißt sind.
- Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß im Inneren des Vieleckrohres (3) Schweißmuttern (7) zum Befestigen der Zähne (2) mittels Schrauben angeordnet sind.
- Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß wenigstens zwei Zähne (2) miteinander verbunden sind.
- Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Zähne (2) auf einem Träger (18) angeordnet sind.
- Vorrichtung zum Abtragen von Faserflocken aus Faserballen mit einer Abtragwalze (1), welche mit einer Vielzahl von Zähnen (2) bestückt ist, wobei die Zähne (2) in Umfangsrichtung der Abtragwalze (1) angeordnet sind und einen axialen Abstand voneinander aufweisen, insbesondere nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß ein Zahn (2) aus einem abgekanteten Stahlblech geformt ist, wobei eine Fläche des abgekanteten Bleches den Träger (18) und die andere Fläche den Zahn (2) selbst bildet.
- Vorrichtung nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß der Träger (18) wenigstens zwei Zähne (2) aufnimmt und so einen Doppelzahn bildet.
- Vorrichtung nach einem der Ansprüche 6 bis 8, dadurch gekennzeichnet, daß der Träger (18) entsprechend der Form des Vieleckrohres (3) abgekantet ist und an wenigstens zwei Flächen des Vieleckrohres (3) anliegt.
- Vorrichtung nach einem der Ansprüche 6 bis 9, dadurch gekennzeichnet, daß die Zähne (2) an dem Träger (18) derart angeordnet sind, daß sie in axialer Richtung der Abtragwalze (1) an dem Träger (18) einander gegenüberliegen und jeweils einer separaten Fläche des Vieleckrohres (3) zugeordnet sind.
- Vorrichtung nach einem der Ansprüche 6 bis 10, dadurch gekennzeichnet, daß der Träger (18) zwei Bohrungen (16) zur verdrehfesten Befestigung des Trägers (18) auf dem Vieleckrohr (3) mittels Schrauben aufweist.
- Vorrichtung nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß die Zähne (2) in Reihen zwischen Roststäben (19) am Umfang der Abtragwalze (1) angeordnet sind.
- Vorrichtung nach Anspruch 12, dadurch gekennzeichnet, daß in jeder Reihe eine Vielzahl von Zähnen (2), insbesondere zwölf Zähne (2) angeordnet sind, die axial zueinander versetzt sind, so daß auf dem Umfang kein Zahn (2) direkt hinter dem anderen folgt.
- Vorrichtung nach Anspruch 12 oder 13, dadurch gekennzeichnet, daß der Abstand der Zähne (2) derart gewählt ist, daß in axialer Richtung nahe beieinanderstehende Zähne (2) auf dem Umfang in einer Reihe möglichst weit auseinander befestigt sind.
- Vorrichtung nach einem der Ansprüche 6 bis 14, dadurch gekennzeichnet, daß die Zähne (2) und der Träger (18) aus hochfestem Stahlblech mit Biegeradius kleiner der Blechdicke, insbesondere kleiner 0,5-facher Blechdicke gefertigt sind.
- Verfahren zur Herstellung von Zähnen (2) einer Abtragwalze die als Grundkörper ein Vieleckrohr aufweist, dadurch gekennzeichnet, daß die Zähne (2) aus Stahlblech gefertigt sind, das Stahlblech, insbesondere nur die späteren Zahnspitzen (17) in flachem Zustand oberflächenbehandelt werden und anschließend das Stahlblech zu Träger (18) und Zahn (2) abgekantet wird.
- Verfahren nach Anspruch 16, dadurch gekennzeichnet, daß wenigstens die Stellen des Stahlbleches, an denen später die Abkantung erfolgt, von einer Oberflächenbehandlung ausgespart bleiben.
- Verfahren nach Anspruch 16 oder 17, dadurch gekennzeichnet, daß zur Oberflächenbehandlung das Stahlblech boriert, nitriert, oder verchromt wird.
- Verfahren nach einem der Ansprüche 16 bis 18, dadurch gekennzeichnet, daß die Zähne (2) und der Träger (18) mittels Laser aus dem Stahlblech geschnitten werden.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19800371 | 1998-01-09 | ||
DE19800371A DE19800371A1 (de) | 1998-01-09 | 1998-01-09 | Vorrichtung zum Abtragen von Faserflocken und Verfahren zur Herstellung von Zähnen einer Abtragwalze |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0928839A1 EP0928839A1 (de) | 1999-07-14 |
EP0928839B1 true EP0928839B1 (de) | 2002-09-04 |
Family
ID=7854120
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98811142A Expired - Lifetime EP0928839B1 (de) | 1998-01-09 | 1998-11-18 | Vorrichtung zum Abtragen von Faserflocken und Verfahren zur Herstellung von Zähnen einer Abtragwalze |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0928839B1 (de) |
DE (2) | DE19800371A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006060933A1 (de) * | 2004-12-10 | 2006-06-15 | Maschinenfabrik Rieter Ag | Zahnelement für eine abtragswalze |
CN104018252B (zh) * | 2014-06-18 | 2016-08-31 | 盐城瑞德棉业有限公司 | 一种可快速调换的开松刺接头 |
CN105297185B (zh) * | 2015-11-20 | 2019-04-16 | 四川北方硝化棉股份有限公司 | 一种开棉高效的精制棉开棉机 |
CH715608A1 (de) * | 2018-12-03 | 2020-06-15 | Rieter Ag Maschf | Abtragwalze. |
CN110055629B (zh) * | 2019-04-29 | 2020-09-29 | 东阳市俊华电器销售有限公司 | 一种抓棉打手盘 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2688777A (en) * | 1950-11-04 | 1954-09-14 | Waste Conditioning Inc | Rotary separator and picker |
US3325880A (en) * | 1964-10-01 | 1967-06-20 | James I Kotter | Method of making a fiber processing cylinder |
CH505919A (de) * | 1969-01-31 | 1971-04-15 | Chr Burckhardt Fa | Nadelwalze |
EP0058781B1 (de) * | 1981-02-20 | 1985-06-05 | Maschinenfabrik Rieter Ag | Abtragwalze für Faserballen |
DE3620312A1 (de) * | 1986-06-18 | 1987-12-23 | Hollingsworth Gmbh | Vorrichtung zum oeffnen von gepressten faserballen aus spinngut |
GB2198157B (en) * | 1986-06-20 | 1990-01-04 | Frey Equip Mfg | Hay-bale shredding machine |
DE3637579A1 (de) * | 1986-11-04 | 1988-05-05 | Schubert & Salzer Maschinen | Abtragwalze fuer einen ballenoeffner |
JPH0390629A (ja) * | 1989-08-29 | 1991-04-16 | Fuji Deibaisu Kk | 原綿縦取りローラ及び原綿縦取りローラ付混綿装置 |
IT1271661B (it) * | 1994-07-14 | 1997-06-04 | Marzoli & C Spa | Dispositivo perfezionato di rilevamento di corpi estranei conduttori nelle balle di fibre lavorate nella macchine apriballe |
-
1998
- 1998-01-09 DE DE19800371A patent/DE19800371A1/de not_active Withdrawn
- 1998-11-18 EP EP98811142A patent/EP0928839B1/de not_active Expired - Lifetime
- 1998-11-18 DE DE59805405T patent/DE59805405D1/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE59805405D1 (de) | 2002-10-10 |
DE19800371A1 (de) | 1999-07-15 |
EP0928839A1 (de) | 1999-07-14 |
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