EP0705668A1 - Knife ring cutter - Google Patents

Knife ring cutter Download PDF

Info

Publication number
EP0705668A1
EP0705668A1 EP95107833A EP95107833A EP0705668A1 EP 0705668 A1 EP0705668 A1 EP 0705668A1 EP 95107833 A EP95107833 A EP 95107833A EP 95107833 A EP95107833 A EP 95107833A EP 0705668 A1 EP0705668 A1 EP 0705668A1
Authority
EP
European Patent Office
Prior art keywords
knife
ring
wear plate
projection
carrying
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.)
Withdrawn
Application number
EP95107833A
Other languages
German (de)
French (fr)
Inventor
Rolf Ameling
Rudolf Wilholt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
B Maier Zerkleinerungstechnik GmbH
Original Assignee
B Maier Zerkleinerungstechnik GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by B Maier Zerkleinerungstechnik GmbH filed Critical B Maier Zerkleinerungstechnik GmbH
Publication of EP0705668A1 publication Critical patent/EP0705668A1/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
    • B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
    • B27L11/005—Tools therefor

Definitions

  • the invention relates to a knife ring chipper, in particular with the features from the preamble of claim 1.
  • Knife ring chippers are known in which a knife ring is arranged fixedly on an axis in a chipper housing.
  • a rotor for example in the form of a centrifugal impeller, is rotatably mounted on this horizontal axis.
  • the knife ring comprises an annular support frame, on the circumference of which a large number of knife-bearing elements are arranged such that they form a clamping exit gap with one another.
  • Each knife-carrying element comprises at least one knife bar, on which a stick knife and a cutting knife are arranged and fastened on the side surfaces opposite one another in the circumferential direction in order to achieve different chip strengths.
  • the arrangement is such that in the installed position the cutting knives and stick knives each have the same circumferential direction on the knife bars, i.e. are always arranged in the circumferential direction on the sides pointing in the same direction.
  • a wear plate is also arranged on the knife web on the surface pointing in the radial direction toward the horizontal axis.
  • Such a knife ring chipper has become known from DE 24 10 176 A1.
  • the wear plate has a projection on the free surface of the knife-bearing element. This projection is provided with openings, for example with bores (see FIG. 2a there) or with open-edged recesses (see FIG. 2b there). These breakthroughs are said to have an air flow as chip carrier air Allow to pass through to promote the removal of the chips radially outwards.
  • the invention has for its object to develop a knife ring chipper of the type mentioned in such a way that the chip removal takes place properly.
  • the inventors have recognized that the breakthroughs are due to the chip build-up in the discharge channel. Instead of promoting chip removal, they do the opposite, presumably due to turbulence after the chip exit slot. Accordingly, the inventors have made the wear plate protrusion completely free of perforations. In addition, its end edge is largely straight. In addition, the surface of the projection should be as smooth and flat as possible.
  • a knife ring cutter 1 comprises a knife ring 2 which is fixedly arranged on an axis, not shown in detail here.
  • the knife ring comprises knife-carrying elements 5 arranged in the area of the outer circumference 4.
  • a knife-bearing element 5 each comprises a cutting knife 6, which is arranged on a knife web 7.
  • the cutting knife 6 is arranged on a circumferential side surface 8 of the knife bar 7.
  • the side surface 9 opposite this side surface 8, which in the circumferential direction is opposite the side surface 8 in the opposite direction is designed as a smooth surface.
  • a wear plate 11 is arranged on the surface 10 of the knife bar 7 which is directed toward the axis (not shown here).
  • the wear plate 11 has several tasks. It supports on the one hand the end region 12 of the blade 13 of the cutting knife, and on the other hand against wear on the knife web 7.
  • the wear plate 11 in this embodiment is extended in the direction of the side face 9, so that it is above the knife web 7 in the direction of the neighboring knife-carrying Element 5 'protrudes.
  • the extended wear plate 11 thus forms a smooth further projection 15, which adjoins the side surface 9, but in such a way that there is no smooth transition but an offset.
  • the wear plate 11 and the knife bar 7 can be made from different materials, the wear plate 11 being made from a wear-resistant material.
  • a chip exit slot 16 is in each case formed between two adjacent knife elements 5 and 5 'directly by the cutting knife 6' of the one knife-bearing element 5 'and the wear plate 11 or the projection 15 of the other adjacent knife-bearing element.
  • the chip exit channel 17 into the housing 3, in which the knife ring is arranged, is formed by the cutting knife 6 'of the knife-bearing element 5' and the surface 19 of the knife-bearing element 5.
  • the design of the chip exit channels 17 with their smooth side walls offers the advantage that the chip removal is not disturbed by outstanding elements and blockages and thus a backflow into the inside of the knife ring 2 are avoided.
  • the projection 15 of the wear plate 11 is free of openings. It also has a straight end edge. In the present case, it is completely smooth and flat.

Abstract

The cutter has a blade ring (2) around a rotor (20), with carriers (5) for cutting blades (6). Each carrier has an associated wearing plate (11) facing the rotor. The wearing plate has a projection extending across its second side (9). The projection has a straight axis-parallel edge and does not have any apertures. The second plate side and the projection have a smooth level surface.

Description

Die Erfindung betrifft einen Messerringzerspaner, im einzelnen mit den Merkmalen aus dem Oberbegriff des Anspruches 1.The invention relates to a knife ring chipper, in particular with the features from the preamble of claim 1.

Bekannt sind Messerringzerspaner, bei denen ein Messerring auf einer Achse in einem Zerspanergehäuse feststehend angeordnet ist. Auf dieser horizontalen Achse ist des weiteren ein Rotor, beispielswise in Form eines Schleuderflügelrades drehbar gelagert. Der Messerring umfaßt ein kreisringförmiges Traggestell, an dessen Umfang eine Vielzahl von messertragenden Elementen derart angeordnet sind, daß diese einen Spannaustrittsspalt miteinander bilden. Jedes messertragende Element umfaßt mindestens einen Messersteg, an dem zur Realisierung unterschiedlicher Spanstärken jeweils ein Stockmesser und ein Schneidmesser an den in Umfangsrichtung einander gegenüberliegenden Seitenflächen angeordnet und befestigt sind. Die Anordnung erfolgt dabei derart, daß in Einbaulage die Schneidmesser und Stockmesser jeweils in Umfangsrichtung gleichgerichtet an den Messerstegen, d.h. in Umfangsrichtung immer an den in die gleiche Richtung weisenden Seiten angeordnet sind.Knife ring chippers are known in which a knife ring is arranged fixedly on an axis in a chipper housing. A rotor, for example in the form of a centrifugal impeller, is rotatably mounted on this horizontal axis. The knife ring comprises an annular support frame, on the circumference of which a large number of knife-bearing elements are arranged such that they form a clamping exit gap with one another. Each knife-carrying element comprises at least one knife bar, on which a stick knife and a cutting knife are arranged and fastened on the side surfaces opposite one another in the circumferential direction in order to achieve different chip strengths. The arrangement is such that in the installed position the cutting knives and stick knives each have the same circumferential direction on the knife bars, i.e. are always arranged in the circumferential direction on the sides pointing in the same direction.

Am Messersteg ist des weiteren an der zur horizontalen Achse hin in radialer Richtung weisenden Fläche eine Verschleißplatte angeordnet.A wear plate is also arranged on the knife web on the surface pointing in the radial direction toward the horizontal axis.

Ein solcher Messerringzerspaner ist aus DE 24 10 176 A1 bekanntgeworden. Dabei weist die Verschleißplatte auf der freien Fläche des messertragenden Elementes einen Vorsprung auf. Dieser Vorsprung ist mit Durchbrechungen versehen, beispielsweise mit Bohrungen (siehe dort Figur 2a) oder mit randoffenen Ausnehmungen (siehe dort Figur 2b). Diese Durchbrechungen sollen einen Luftstrom als Späneträgerluft durchtreten lassen, um die Abführung der Späne radial nach außen zu begünstigen.Such a knife ring chipper has become known from DE 24 10 176 A1. The wear plate has a projection on the free surface of the knife-bearing element. This projection is provided with openings, for example with bores (see FIG. 2a there) or with open-edged recesses (see FIG. 2b there). These breakthroughs are said to have an air flow as chip carrier air Allow to pass through to promote the removal of the chips radially outwards.

Dieser Messerringzerspaner hat sich trotz der genannten Trägerluftkanäle nicht bewährt. Es kommt hierbei immer wieder zu Stauungen im Spanabführungskanal.This knife ring chipper has not proven itself despite the carrier air channels mentioned. This always leads to congestion in the chip removal duct.

Der Erfindung liegt die Aufgabe zugrunde, einen Messerringzerspaner der eingangs genannten Art derart weiterzuentwickeln, daß die Spanabfuhr einwandfrei erfolgt.The invention has for its object to develop a knife ring chipper of the type mentioned in such a way that the chip removal takes place properly.

Diese Aufgabe wird durch die kennzeichnenden Merkmale gelöst. Die Erfinder haben erkannt, daß die Durchbrechungen an den Spänestauungen im Abfuhrkanal schuld sind. Statt die Späneabfuhr zu begünstigen, bewirken sie das Gegenteil, vermutlich durch Turbulenzen nach dem Spanaustrittsschlitz. Demgemäß haben die Erfinder den Vorsprung der Verschleißplatte völlig frei von Durchbrechungen gestaltet. Außerdem ist seine Endkante weitgehend geradlinig. Außerdem sollte die Oberfläche des Vorsprunges möglichst glatt und eben sein.This task is solved by the characteristic features. The inventors have recognized that the breakthroughs are due to the chip build-up in the discharge channel. Instead of promoting chip removal, they do the opposite, presumably due to turbulence after the chip exit slot. Accordingly, the inventors have made the wear plate protrusion completely free of perforations. In addition, its end edge is largely straight. In addition, the surface of the projection should be as smooth and flat as possible.

Die Figur verdeutlicht einen Ausschnitt aus einem Messerringzerspaner mit einer erfindungsgemäßen Ausführung eines messertragenden Elementes. Ein Messerringzerpanner 1 umfaßt einen Messerring 2, welcher auf einer, hier im einzelnen nicht dargestellten Achse fest angeordnet ist. Der Messerring umfaßt im Bereich des Außenumfanges 4 angeordnete messertragende Elemete 5. Ein messertragendes Element 5 umfaßt jeweils ein Schneidmesser 6, welches an einem Messersteg 7 angeordnet ist.The figure illustrates a section of a knife ring chipper with an inventive design of a knife-bearing element. A knife ring cutter 1 comprises a knife ring 2 which is fixedly arranged on an axis, not shown in detail here. The knife ring comprises knife-carrying elements 5 arranged in the area of the outer circumference 4. A knife-bearing element 5 each comprises a cutting knife 6, which is arranged on a knife web 7.

Das Schneidmesser 6 ist dabei an einer in Umfangsrichtung weisenden Seitenfläche 8 des Messersteges 7 angeordnet. Die dieser Seitenfläche 8 gegenüberliegende Seitenfläche 9, welche in Umfangsrichtung gegenüber der Seitenfläche 8 in die entgegengesetzte Richtung weist, ist als glatte Fläche ausgeführt. In radialer Richtung ist an der zur hier nicht dargestellten Achse hingerichteten Fläche 10 des Messersteges 7 eine Verschleißplatte 11 angeordnet. Die Verschleißplatte 11 hat mehrere Aufgaben. Sie stützt zum einen den Endbereich 12 der Klinge 13 des Schneidmessers, zum andern vor Verschleiß am Messersteg 7. Des weiteren ist die Verschleißplatte 11 in dieser Ausführung in Richtung der Seitenfläche 9 verlängert ausgeführt, so daß diese über den Messersteg 7 in Richtung des benachbarten messertragenden Elementes 5' hinausragt. Die verlängerte Verschleißplatte 11 bildet somit einen glatten weiteren Vorsprung 15, welche sich an die Seitenfläche 9 anschließt, jedoch derart, daß kein gleichmäßiger Übergang erfolgt sondern ein Versatz.The cutting knife 6 is arranged on a circumferential side surface 8 of the knife bar 7. The side surface 9 opposite this side surface 8, which in the circumferential direction is opposite the side surface 8 in the opposite direction is designed as a smooth surface. In the radial direction, a wear plate 11 is arranged on the surface 10 of the knife bar 7 which is directed toward the axis (not shown here). The wear plate 11 has several tasks. It supports on the one hand the end region 12 of the blade 13 of the cutting knife, and on the other hand against wear on the knife web 7. Furthermore, the wear plate 11 in this embodiment is extended in the direction of the side face 9, so that it is above the knife web 7 in the direction of the neighboring knife-carrying Element 5 'protrudes. The extended wear plate 11 thus forms a smooth further projection 15, which adjoins the side surface 9, but in such a way that there is no smooth transition but an offset.

Die Verschleißplatte 11 und der Messersteg 7 können dabei aus unterschiedlichen Materialien hergestellt werden, wobei die Verschleißplatte 11 aus einem gegen Verschleiß widerstandsfähigen Material gefertigt ist.The wear plate 11 and the knife bar 7 can be made from different materials, the wear plate 11 being made from a wear-resistant material.

Ein Spanaustrittsschlitz 16 wird jeweils zwischen zwei benachbarten Messerelementen 5 und 5' unmittelbar von dem Schneidmesser 6' des ein messertragenden Elementes 5' und der Verschleißplatte 11 bzw. des Vorsprunges 15 des anderen benachbarten messertragenden Elementes gebildet. Der Spanaustrittskanal 17 ins Gehäuse 3, in welchem der Messerring angeordnet ist, wird von dem Schneidmesser 6' des messertragenden Elementes 5' und der Fläche 19 des messertragenden Elementes 5 gebildet.A chip exit slot 16 is in each case formed between two adjacent knife elements 5 and 5 'directly by the cutting knife 6' of the one knife-bearing element 5 'and the wear plate 11 or the projection 15 of the other adjacent knife-bearing element. The chip exit channel 17 into the housing 3, in which the knife ring is arranged, is formed by the cutting knife 6 'of the knife-bearing element 5' and the surface 19 of the knife-bearing element 5.

Innerhalb des Messerringes 2 auf der Achse 3 ist desweiteren ein Rotor 20, beispielsweise in Form eines Flügelrades ausgebildet, drehbar angeordnet, der die Hackschnitzel gegen den, den Rotor umfangsseitig umhüllenden Messerring 2 schleudert. Die Schneidmesser 6 und 6' der messertragenden Elemente dienen dabei zum Zerspanen der Hackschnitzel in dünne Späne. Nach dem Zerspanen durchdringen die Späne zwischen den messertragende Elementen, beispielsweise 5 und 5', den Spanaustrittskanal 17 und gelangen von dort in einen hier nicht dargesellten Späneabzugskanal, aus dem sie beispielsweise in das nach unten offene Gehäuse des Messerringzerspaners abgeführt werden.Furthermore, a rotor 20, for example in the form of an impeller, is rotatably arranged within the knife ring 2 on the axis 3 and throws the wood chips against the knife ring 2 enveloping the rotor on the circumference. The cutting knives 6 and 6 'of the knife-carrying elements are used for Cutting the chips into thin chips. After machining, the chips between the knife-carrying elements, for example 5 and 5 ', penetrate the chip exit channel 17 and from there enter a chip removal channel, not shown here, from which they are discharged, for example, into the housing of the knife ring cutter, which is open at the bottom.

Die Gestaltung der Spanaustrittskanäle 17 mit deren glatten Seitenwänden bietet den Vorteil, daß die Spanabfuhr nicht durch herausragende Elemente gestört wird und Verstopfungen und damit ein Rückstau in das Innere des Messerringes 2 vermieden werden.The design of the chip exit channels 17 with their smooth side walls offers the advantage that the chip removal is not disturbed by outstanding elements and blockages and thus a backflow into the inside of the knife ring 2 are avoided.

Die Verwendung der Verschleißplatten 11 zur Bildung der Spanaustrittsschlitze 16 bietet den Vorteil, daß diese Platten bei starkem Verschleiß schnell ausgewechselt werden können.The use of the wear plates 11 to form the chip exit slots 16 offers the advantage that these plates can be replaced quickly in the event of heavy wear.

Gemäß der Erfindung ist es ganz entscheidend, daß der Vorsprung 15 der Verschleißplatte 11 frei von Durchbrechungen ist. Außerdem weist er eine geradlinige Endkante auf. Im vorliegenden Falle ist er völlig glatt und eben gestaltet.According to the invention it is very important that the projection 15 of the wear plate 11 is free of openings. It also has a straight end edge. In the present case, it is completely smooth and flat.

Claims (2)

Messerring-Zerspanner für Hackschnitzel 1.1 mit einem fest auf einer Achse angeordneten Messerring (2); 1.2 mit einem Zerspanergehäuse, das den Messerring zum Teil umschließt; 1.3 mit einem auf der Achse drehbar gelagerten Rotor (20), der vom Messerring (2) umschlossen ist; 1.4 der Messerring (2) umfaßt eine Vielzahl von an dessen Umfang angeordneten messertragenden Elementen (5, 5'); 1.5 jedes messertragende Element (5, 5') umfaßt mindestens einen Messersteg (7) und ein Schneidmesser (6, 6'); 1.6 dem messertragenden Element (5, 5') ist eine Verschleißplatte (11) zugeordnet, welche an dessen in radialer Richtung zum Rotor hin weisenden Fläche (10) angeordnet ist; 1.7 die Schneidmesser (6, 6') sind jeweils an den in Umfangsrichtung in die gleiche Richtung weisenden Seiten der messertragende Elemente (5, 5') angeordnet; 1.8 das Schneidmesser (6, 6') eines messertragenden Elementes (5, 5') bildet mit einem benachbarten messertragenden Element (5, 5') einen Spanaustrittsschlitz (16) mit anschließendem Spanaustrittskanal (17); 1.9 das einzelne messertragende Element (5, 5') ist auf der, der schneidmessertragenden Seite in Umfangsrichtung gegenüberliegenden zweiten Seite (9, 15, 19) frei von weiteren Messeranordnungen; 1.10 die Verschleißplatte (11) ist lösbar mit dem messertragenden Element (5, 5') verbunden; 1.11 die Verschleißplatte (11) weist auf der zweiten Seite (9) einen Vorsprung auf, der sich - in Umlaufrichtung des Rotors (20) gesehen - über die zweite Seite (9) hinaus erstreckt;
gekennzeichnet durch die folgenden Merkmale: 1.12 der Vorsprung der Verschleißplatte (11) weist eine geradlinige achsparallele Kante auf und ist frei von Durchbrechungen. Knife ring cutter for wood chips 1.1 with a knife ring (2) arranged fixed on an axis; 1.2 with a chipper housing that partially surrounds the knife ring; 1.3 with a rotor (20) rotatably mounted on the axis, which is enclosed by the knife ring (2); 1.4 the knife ring (2) comprises a plurality of knife-carrying elements (5, 5 ') arranged on its circumference; 1.5 each knife-carrying element (5, 5 ') comprises at least one knife bar (7) and a cutting knife (6, 6'); 1.6 the knife-carrying element (5, 5 ') is assigned a wear plate (11) which is arranged on its surface (10) pointing in the radial direction towards the rotor; 1.7 the cutting knives (6, 6 ') are each arranged on the sides of the knife-carrying elements (5, 5') pointing in the same direction in the circumferential direction; 1.8 the cutting knife (6, 6 ') of a knife-bearing element (5, 5') forms with an adjacent knife-bearing element (5, 5 ') a chip exit slot (16) with a subsequent chip exit channel (17); 1.9 the individual knife-carrying element (5, 5 ') is free of further knife arrangements on the second side (9, 15, 19) opposite the cutting knife-carrying side; 1.10 the wear plate (11) is detachably connected to the knife-carrying element (5, 5 '); 1.11 the wear plate (11) has a projection on the second side (9) which - seen in the direction of rotation of the rotor (20) - extends beyond the second side (9);
characterized by the following features: 1.12 the projection of the wear plate (11) has a straight, axially parallel edge and is free of openings. Messerringzerspaner nach Anspruch 1, dadurch gekennzeichnet, daß die zweite Seite (9) sowie der Vorsprung (15) glatte, ebene Oberflächen haben.Knife ring chipper according to claim 1, characterized in that the second side (9) and the projection (15) have smooth, flat surfaces.
EP95107833A 1994-08-12 1995-05-23 Knife ring cutter Withdrawn EP0705668A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4428615 1994-08-12
DE4428615 1994-08-12

Publications (1)

Publication Number Publication Date
EP0705668A1 true EP0705668A1 (en) 1996-04-10

Family

ID=6525558

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95107833A Withdrawn EP0705668A1 (en) 1994-08-12 1995-05-23 Knife ring cutter

Country Status (1)

Country Link
EP (1) EP0705668A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0744257A2 (en) * 1995-05-23 1996-11-27 B. Maier Zerkleinerungstechnik GmbH Chipping machine for chips
WO1999059784A2 (en) * 1998-05-16 1999-11-25 B. Maier Zerkleinerungstechnik Gmbh Blade ring cutter
AT406132B (en) * 1998-05-28 2000-02-25 Boehler Miller Messer Und Saeg ARRANGEMENT OF A DISPOSABLE COMB KNIFE IN A KNIFE ROLLER

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1199477B (en) * 1964-06-06 1965-08-26 Condux Werk Machine for cutting, especially wood
DE2318731A1 (en) * 1973-04-13 1974-10-24 Maier Kg Maschf B DRUM-LIKE KNIFE BASKET WITH INTERCHANGEABLE KNIFE PACKAGES
DE2360297A1 (en) * 1973-12-04 1975-06-05 Paul A Dr Ing Kirsten Quick-change blade mounting for wood chipper - has clamp for each blade unit, actuated by eccentrics
DE2410176A1 (en) 1974-03-04 1975-09-18 Paul A Dr Ing Kirsten Offcut remover for rotary knife cutters - hassair blow holes in the cutting block fasteners
DE2628764A1 (en) * 1976-06-26 1977-12-29 Kloeckner Gmbh & Co Geb KNIFE FASTENING IN KNIFE RING CHIPPERS FOR CHIPPING
DE3146861A1 (en) * 1981-11-26 1983-06-01 Hombak Maschinenfabrik Gmbh & Co Kg, 6550 Bad Kreuznach Wear shoe for a cutter-ring chipping tool
US4972888A (en) * 1989-11-14 1990-11-27 Acrowood Corporation Blade-carrying drum assembly for chip slicing machines
EP0481952A1 (en) * 1990-10-17 1992-04-22 BÖHLER YBBSTALWERKE G.m.b.H. Replaceable wear part
DE9206975U1 (en) * 1991-05-23 1992-09-17 Globus S.R.L., Galliate, Novara, It

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1199477B (en) * 1964-06-06 1965-08-26 Condux Werk Machine for cutting, especially wood
DE2318731A1 (en) * 1973-04-13 1974-10-24 Maier Kg Maschf B DRUM-LIKE KNIFE BASKET WITH INTERCHANGEABLE KNIFE PACKAGES
DE2360297A1 (en) * 1973-12-04 1975-06-05 Paul A Dr Ing Kirsten Quick-change blade mounting for wood chipper - has clamp for each blade unit, actuated by eccentrics
DE2410176A1 (en) 1974-03-04 1975-09-18 Paul A Dr Ing Kirsten Offcut remover for rotary knife cutters - hassair blow holes in the cutting block fasteners
DE2628764A1 (en) * 1976-06-26 1977-12-29 Kloeckner Gmbh & Co Geb KNIFE FASTENING IN KNIFE RING CHIPPERS FOR CHIPPING
DE3146861A1 (en) * 1981-11-26 1983-06-01 Hombak Maschinenfabrik Gmbh & Co Kg, 6550 Bad Kreuznach Wear shoe for a cutter-ring chipping tool
US4972888A (en) * 1989-11-14 1990-11-27 Acrowood Corporation Blade-carrying drum assembly for chip slicing machines
EP0481952A1 (en) * 1990-10-17 1992-04-22 BÖHLER YBBSTALWERKE G.m.b.H. Replaceable wear part
DE9206975U1 (en) * 1991-05-23 1992-09-17 Globus S.R.L., Galliate, Novara, It

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0744257A2 (en) * 1995-05-23 1996-11-27 B. Maier Zerkleinerungstechnik GmbH Chipping machine for chips
EP0744257A3 (en) * 1995-05-23 1997-06-11 Maier Zerkleinerungstech Gmbh Chipping machine for chips
WO1999059784A2 (en) * 1998-05-16 1999-11-25 B. Maier Zerkleinerungstechnik Gmbh Blade ring cutter
WO1999059784A3 (en) * 1998-05-16 2000-04-06 Maier Zerkleinerungstech Gmbh Blade ring cutter
AT406132B (en) * 1998-05-28 2000-02-25 Boehler Miller Messer Und Saeg ARRANGEMENT OF A DISPOSABLE COMB KNIFE IN A KNIFE ROLLER

Similar Documents

Publication Publication Date Title
DE10215833A1 (en) Cutter body with flail, has lateral surface of flail bearing body divided into segments
DE202009017951U1 (en) pulper
EP1679403A1 (en) Pulper for comminuting and suspending papermaking material
DE2405702C3 (en) Pulper for producing a pumpable suspension from dry paper raw materials
EP0744257B1 (en) Chipping machine for chips
EP0705668A1 (en) Knife ring cutter
WO2012084562A1 (en) Pressure screen
DE3925098C2 (en) Device for shredding material, so-called turbo separator
DE2640334C2 (en) Forage harvester
DE2938215A1 (en) CRUSHING DEVICE, ESPECIALLY FOR WOOD
EP0367255B1 (en) Wood chipping machine
EP0807500B1 (en) Chipping machine for chips
DE2221479A1 (en) KNIFE ROLLER FOR CUTTING MACHINES
DE202005010055U1 (en) Paddle cutter for chopping device has cutting edge pointing in rotating direction, which stretches across width of paddle cutter, from outer edge up to fixing zone which has opening for fixing the cutter on rotating part of chopping device
WO2002040166A2 (en) Centrifugal mill comprising two chambers
DE2618254A1 (en) Wood and paper refuse cutting drum - has discs mounted along shaft, each with projecting cutter blades
DE102009005929B4 (en) Cutting unit, especially for a meat grinder
EP1574615A1 (en) Refiner and refiner filling for paper pulp
EP3381563A1 (en) Chipper rotor
DE2457403A1 (en) Device for production of wood chippings - has paddle feed wheel with same axial intermediate space as ring cutter
DE2651569A1 (en) Fruit or vegetable cutter and shredder - has set of V=shaped blades placed on edge and movable through slit blade wiper
EP1394318A1 (en) Pressure screen for screening a fibrous suspension
DE2437202A1 (en) Feed system for comminution devices - has chute and vertical feed channel with parallel feed dividing sheets
EP0175313B1 (en) Waste comminuter
DE3743071A1 (en) Refiner for paper stock

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE DE FR IT

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19961011