EP1050390B1 - Blade ring-type chip shredder for cutting coarse chips - Google Patents

Blade ring-type chip shredder for cutting coarse chips

Info

Publication number
EP1050390B1
EP1050390B1 EP00108300A EP00108300A EP1050390B1 EP 1050390 B1 EP1050390 B1 EP 1050390B1 EP 00108300 A EP00108300 A EP 00108300A EP 00108300 A EP00108300 A EP 00108300A EP 1050390 B1 EP1050390 B1 EP 1050390B1
Authority
EP
European Patent Office
Prior art keywords
knife
clamping plate
carrier
ring
fastening screws
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP00108300A
Other languages
German (de)
French (fr)
Other versions
EP1050390A3 (en
EP1050390A2 (en
Inventor
Robert Loth
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 EP1050390A2 publication Critical patent/EP1050390A2/en
Publication of EP1050390A3 publication Critical patent/EP1050390A3/en
Application granted granted Critical
Publication of EP1050390B1 publication Critical patent/EP1050390B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 for cutting wood chips.
  • a Zerspaner has become known for example from DE 32 47 629 C1.
  • EP-A-0 807 500 discloses a chipper according to the preamble of claim 1.
  • Chippers of this type are constructed as follows: the chipper comprises a knife ring.
  • the knife ring in turn comprises a wreath of knife packages.
  • the knife packages are carried by two support rings, which enclose the knife packages between them.
  • the knife ring chipper further includes a rotor supporting a plurality of rotor blades.
  • Each knife package contains the following components: a wear plate, which is located in the area of the circle of the rotor blades, a knife carrier, a clamping plate and a knife clamped between knife carrier and clamping plate.
  • a wear plate which is located in the area of the circle of the rotor blades
  • a knife carrier for clamping serve at least two fastening screws, which are arranged at a mutual distance in the longitudinal direction of the blade package.
  • the clamping plate of the individual knife package has a hole, the knife a slot and the knife carrier a threaded hole. The fastening screw is passed through the hole in the clamping plate and the slot in the knife and screwed into the threaded hole of the knife carrier.
  • the knives have a limited service life of a few hours. After that they are worn and need to be replaced with new knives. This means that the knife packages must be dismantled.
  • the fixing screws are unscrewed, the worn knives removed, new knives inserted, the clamping plate replaced and the fastening screws passed through the holes in the clamping plate and the slots in the knives and in the threaded holes of the knife carrier screwed.
  • the precise position of the knives and the clamping plates are important. In particular, the knife board must be accurately adjusted, ie the radial position of the cutting edge. This process is time consuming and requires care and attention.
  • the clamping plate has been fixed by means of a guide slot and a pin engaging therein.
  • the invention has for its object to make a knife ring chipper of the type described above in such a way that the knife package can be easily and quickly mounted at precise position clamping plate and position-accurate knife.
  • the single fixing screw - together with the hole in the clamping plate, the slot in the knife and the hole in the knife carrier - used for centering As a result, a very significant simplification in the assembly is achieved, as well as a large adjustment accuracy of the respective knife.
  • the knife ring chipper shown in Figure 1 comprises a fixed blade ring 1.
  • the knife ring 1 encloses a rotor 2, which sits on a rotor shaft 2.3. Knife ring 1 and rotor 2 are arranged coaxially with each other.
  • the knife ring 1 is permanently installed in a housing 3.
  • the housing 3 has an inlet 3.1 for supplying wood chips, further comprising a chip outlet channel 3.2, which surrounds the knife ring 1.
  • the cuts shown in FIG. 2 are placed at different locations by the knife package shown in FIG. 3, namely in the cutting planes A-A, B-B, C-C and D-D.
  • the knife package has a knife 1.1. This is clamped between a knife carrier 1.2 and a clamping plate 1.3. It is also a wear plate 1.6 is provided, which is bolted to the knife carrier 1.2.
  • the knife 1.1 of a knife carrier 1.2 forms a knife gap 1.5 with the wear plate 1.6 of an adjacent knife carrier 1.2.
  • a rotor blade 2.1 is shown in phantom lines.
  • the rotor blade 2.1 carries a splitting blade 2.2. It can be seen that both the radial position of the splitting blade 2.2 and the radial position of the blade 1.1 are each a critical measure. If these dimensions are not adhered to, collisions between the knife 1.1 and the splitting blade 2.2 can occur.
  • FIG. 2 shows further details of the knife package.
  • the individual components of the blade package - except for the wear plate 1.6 - are mounted together by means of fastening screws 4, of which the fastening screw 4 is shown.
  • the fastening screw has a Nut 4.1 with a bunch 4.2 on.
  • To the collar 4.2 is followed by a dowel pin 4.3, and finally a threaded pin 4.4.
  • the clamping plate 1.3 has a fitting bore 1.3.1, and the knife carrier 1.2.2 a fitting bore 1.2.1 and a threaded bore 1.2.2.
  • the dowel pin 4.3 provides accurate centering of clamping plate 1.3, knife 1.1 and knife carrier 1.2 ago.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Automatic Tool Replacement In Machine Tools (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

A ring cutter that cuts chips with a ring of knives. Two carrier rings enclose a collar of knife packets. Each knife packet includes a knife clamped between a knife carrier a clamping plate with a cutting edge of the knife pointing to the inside of the ring. Fastening screws are threaded through a borehole in the clamping plate and an opening in the knife and are screwed into a threaded borehole in the knife carrier. One of the fastening screws is configured as an alignment pin.

Description

Die Erfindung betrifft einen Messerring-Zerspaner zum Zerspanen von Hackschnitzeln. Ein solcher Zerspaner ist beispielsweise aus DE 32 47 629 C1 bekanntgeworden. EP-A-0 807 500 offenbart einen Zerspaner gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a knife ring chipper for cutting wood chips. Such a Zerspaner has become known for example from DE 32 47 629 C1. EP-A-0 807 500 discloses a chipper according to the preamble of claim 1.

Zerspaner dieser Art sind wie folgt aufgebaut: der Zerspaner umfaßt einen Messerring. Der Messerring seinerseits umfaßt einen Kranz von Messerpaketen. Die Messerpakete sind von zwei Tragringen getragen, die die Messerpakete zwischen sich einschließen. Der Messerring-Zerspaner weist ferner einen Rotor auf, der eine Vielzahl von Rotorschaufeln trägt.Chippers of this type are constructed as follows: the chipper comprises a knife ring. The knife ring in turn comprises a wreath of knife packages. The knife packages are carried by two support rings, which enclose the knife packages between them. The knife ring chipper further includes a rotor supporting a plurality of rotor blades.

Jedes Messerpaket enthält die folgenden Bauteile: eine Verschleißplatte, die sich im Bereich des Flugkreises der Rotorschaufeln befindet, einen Messerträger, eine Klemmplatte sowie ein zwischen Messerträger und Klemmplatte eingespanntes Messer. Zum Einspannen dienen wenigstens zwei Befestigungsschrauben, die in einem gegenseitigen Abstand in Längsrichtung des Messerpaketes angeordnet sind. Entsprechend den Befestigungsschrauben weist die Spannplatte des einzelnen Messerpaketes eine Bohrung auf, das Messer einen Schlitz und der Messerträger eine Gewindebohrung. Die Befestigungsschraube wird durch die Bohrung in der Spannplatte und den Schlitz im Messer hindurchgeführt und in die Gewindebohrung des Messerträgers eingeschraubt.Each knife package contains the following components: a wear plate, which is located in the area of the circle of the rotor blades, a knife carrier, a clamping plate and a knife clamped between knife carrier and clamping plate. For clamping serve at least two fastening screws, which are arranged at a mutual distance in the longitudinal direction of the blade package. According to the mounting screws, the clamping plate of the individual knife package has a hole, the knife a slot and the knife carrier a threaded hole. The fastening screw is passed through the hole in the clamping plate and the slot in the knife and screwed into the threaded hole of the knife carrier.

Die Messer haben nur eine begrenzte Standzeit von einigen Stunden. Danach sind sie verschlissen und müssen gegen neue Messer ausgetauscht werden. Dies bedeutet, daß die Messerpakete demontiert werden müssen. Die Befestigungsschrauben werden somit herausgeschraubt, die verschlissenen Messer entnommen, neue Messer eingelegt, die Spannplatte wieder aufgelegt und die Befestigungsschrauben durch die Bohrungen in der Spannplatte und die Schlitze in den Messern hindurchgeführt sowie in die Gewindebohrungen der Messerträger eingeschraubt. Auf die lagegenaue Position der Messer sowie der Klemmplatten kommt es an. Insbesondere muß der Messervorstand genau eingestellt werden, d. h. die radiale Position der Schneide. Dieser Vorgang ist zeitaufwendig und erfordert Sorgfalt und Aufmerksamkeit.The knives have a limited service life of a few hours. After that they are worn and need to be replaced with new knives. This means that the knife packages must be dismantled. The fixing screws are unscrewed, the worn knives removed, new knives inserted, the clamping plate replaced and the fastening screws passed through the holes in the clamping plate and the slots in the knives and in the threaded holes of the knife carrier screwed. The precise position of the knives and the clamping plates are important. In particular, the knife board must be accurately adjusted, ie the radial position of the cutting edge. This process is time consuming and requires care and attention.

Bisher wurde die Klemmplatte mit Hilfe eines Führungsschlitzes und eines darin eingreifenden Stiftes fixiert.So far, the clamping plate has been fixed by means of a guide slot and a pin engaging therein.

Der Erfindung liegt die Aufgabe zugrunde, einen Messerring-Zerspaner der eingangs beschriebenen Art derart zu gestalten, daß sich das Messerpaket leicht und schnell bei lagegenauer Klemmplatte und lagegenauem Messer montieren läßt.The invention has for its object to make a knife ring chipper of the type described above in such a way that the knife package can be easily and quickly mounted at precise position clamping plate and position-accurate knife.

Diese Aufgabe wird durch die Merkmale von Anspruch 1 gelöst.This object is solved by the features of claim 1.

Demgemäß wird die einzelne Befestigungsschraube - zusammen mit der Bohrung in der Klemmplatte, dem Schlitz im Messer und der Bohrung im Messerträger - zur Zentrierung herangezogen. Hierdurch wird eine ganz erhebliche Vereinfachung bei der Montage erzielt, desgleichen eine große Einstellgenauigkeit des betreffenden Messers.Accordingly, the single fixing screw - together with the hole in the clamping plate, the slot in the knife and the hole in the knife carrier - used for centering. As a result, a very significant simplification in the assembly is achieved, as well as a large adjustment accuracy of the respective knife.

Die Erfindung ist anhand der Zeichnung näher erläutert. Darin ist im einzelnen folgendes dargestellt:

Figur 1
zeigt einen Messerring-Zerspaner in einem Axialschnitt.
Figur 2
zeigt einen Ausschnitt aus dem in Figur 1 enthaltenen Messerring in einer Ansicht in Achsrichtung und gegenüber dem Gegenstand von Figur 1 stark vergrößert; darin sieht man 4 Schnittansichten, gelegt durch ein Messerpaket, das in Figur 3 dargestellt ist
Figur 3
zeigt eine Draufsicht auf ein im Messerring montiertes Messerpaket, gegenüber der Darstellung von Figur 2 verkleinert.
The invention is explained in more detail with reference to the drawing. The following is shown in detail:
FIG. 1
shows a knife ring chipper in an axial section.
FIG. 2
shows a section of the knife ring contained in Figure 1 in a view in the axial direction and compared to the object of Figure 1 greatly enlarged; 4 shows sectional views taken through a knife package shown in FIG
FIG. 3
shows a plan view of a knife ring mounted in the knife assembly, compared to the representation of Figure 2 reduced.

Der in Figur 1 gezeigte Messerring-Zerspaner umfaßt einen feststehenden Messerring 1. Der Messerring 1 umschließt einen Rotor 2, der auf einer Rotorwelle 2.3 sitzt. Messerring 1 und Rotor 2 sind koaxial zueinander angeordnet. Der Messerring 1 ist in einem Gehäuse 3 fest eingebaut. Das Gehäuse 3 weist einen Einlauf 3.1 zum Zuführen von Hackschnitzeln auf, ferner einen Späneaustrittskanal 3.2, der den Messerring 1 umschließt.The knife ring chipper shown in Figure 1 comprises a fixed blade ring 1. The knife ring 1 encloses a rotor 2, which sits on a rotor shaft 2.3. Knife ring 1 and rotor 2 are arranged coaxially with each other. The knife ring 1 is permanently installed in a housing 3. The housing 3 has an inlet 3.1 for supplying wood chips, further comprising a chip outlet channel 3.2, which surrounds the knife ring 1.

Die in Figur 2 gezeigten Schnitte sind durch das in Figur 3 dargestellte Messerpaket an verschiedenen Stellen gelegt, nämlich in den Schnittebenen A-A, B-B, C-C und D-D. Das Messerpaket weist ein Messer 1.1 auf. Dieses ist zwischen einem Messerträger 1.2 und einer Klemmplatte 1.3 eingespannt. Es ist ferner eine Verschleißplatte 1.6 vorgesehen, die mit dem Messerträger 1.2 verschraubt ist. Das Messer 1.1 eines Messerträgers 1.2 bildet mit der Verschleißplatte 1.6 eines benachbarten Messerträgers 1.2 einen Messerspalt 1.5.The cuts shown in FIG. 2 are placed at different locations by the knife package shown in FIG. 3, namely in the cutting planes A-A, B-B, C-C and D-D. The knife package has a knife 1.1. This is clamped between a knife carrier 1.2 and a clamping plate 1.3. It is also a wear plate 1.6 is provided, which is bolted to the knife carrier 1.2. The knife 1.1 of a knife carrier 1.2 forms a knife gap 1.5 with the wear plate 1.6 of an adjacent knife carrier 1.2.

Eine Rotorschaufel 2.1 ist in Phantomlinien dargestellt. Die Rotorschaufel 2.1 trägt ein Spaltmesser 2.2. Man erkennt, daß sowohl die radiale Position des Spaltmessers 2.2 als auch die radiale Position des Messers 1.1 jeweils ein kritisches Maß sind. Werden diese Maße nicht eingehalten, so kann es zu Kollisionen zwischen dem Messer 1.1 und dem Spaltmesser 2.2 kommen.A rotor blade 2.1 is shown in phantom lines. The rotor blade 2.1 carries a splitting blade 2.2. It can be seen that both the radial position of the splitting blade 2.2 and the radial position of the blade 1.1 are each a critical measure. If these dimensions are not adhered to, collisions between the knife 1.1 and the splitting blade 2.2 can occur.

Figur 2 zeigt weitere Einzelheiten des Messerpaketes. Die einzelnen Bauteile des Messerpaketes - bis auf die Verschleißplatte 1.6 - sind mittels Befestigungsschrauben 4 miteinander montiert, von denen die Befestigungsschraube 4 dargestellt ist. Die Befestigungsschraube weist eine Mutter 4.1 mit einem Bund 4.2 auf. An den Bund 4.2 schließt sich ein Paßstift 4.3 an, und schließlich ein Gewindestift 4.4.FIG. 2 shows further details of the knife package. The individual components of the blade package - except for the wear plate 1.6 - are mounted together by means of fastening screws 4, of which the fastening screw 4 is shown. The fastening screw has a Nut 4.1 with a bunch 4.2 on. To the collar 4.2 is followed by a dowel pin 4.3, and finally a threaded pin 4.4.

Die Klemmplatte 1.3 weist eine Paßbohrung 1.3.1 auf, und der Messerträger 1.2 eine Paßbohrung 1.2.1 sowie eine Gewindebohrung 1.2.2. Der Paßstift 4.3 stellt eine genaue Zentrierung von Klemmplatte 1.3, Messer 1.1 und Messerträger 1.2 her.The clamping plate 1.3 has a fitting bore 1.3.1, and the knife carrier 1.2.2 a fitting bore 1.2.1 and a threaded bore 1.2.2. The dowel pin 4.3 provides accurate centering of clamping plate 1.3, knife 1.1 and knife carrier 1.2 ago.

Aus Figur 3 erkennt man, wie das Messerpaket zwischen zwei Tragringen 5.1 und 5.2 montiert ist.From Figure 3 it can be seen how the knife package between two support rings 5.1 and 5.2 is mounted.

Claims (2)

  1. Ring cutter for cutting wood chips;
    1.1 with a cutting ring (1), comprising a crown of knife packets and two carrier rings (5.1, 5.2) which support and encompass said knife packets;
    1.2 with a rotor (2) supporting a large number of rotor blades (2.1); wherein
    1.3 each knife packet contains the following parts:
    a knife carrier (1.2),
    a clamping plate (1.3),
    a knife (1.1) which is clamped between the knife carrier (1.2) and the clamping plate (1.3) and the blade of which is directed inwards;
    at least two fastening screws (4) which are each guided through a bore (1.3.1) in the clamping plate (1.3) and through an opening in the knife (1.1) and are screwed into a tapped hole (1.2.2) in the knife carrier (1.2); characterised by the following features:
    1.4 a portion of the length of at least one of the fastening screws (4) is configured as an alignment pin (4.3);
    1.5 at least a portion of the length of the associated bores in the clamping plate (1.3) and the knife carrier (1.2) is configured as mating bores (1.3.1, 1.2.1) and is adjusted at this location to the diameter of the alignment pin (4.3).
  2. Ring cutter according to claim 1, characterised in that the knife packet comprises a wearing plate (1.6).
EP00108300A 1999-05-07 2000-04-14 Blade ring-type chip shredder for cutting coarse chips Expired - Lifetime EP1050390B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19921597A DE19921597C1 (en) 1999-05-07 1999-05-07 Blade ring shredder for chopped material has blade ring comprising crown of blade packets held by support rings which enclose packets between them
DE19921597 1999-05-07

Publications (3)

Publication Number Publication Date
EP1050390A2 EP1050390A2 (en) 2000-11-08
EP1050390A3 EP1050390A3 (en) 2004-04-28
EP1050390B1 true EP1050390B1 (en) 2006-08-16

Family

ID=7907649

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00108300A Expired - Lifetime EP1050390B1 (en) 1999-05-07 2000-04-14 Blade ring-type chip shredder for cutting coarse chips

Country Status (8)

Country Link
US (1) US6561885B1 (en)
EP (1) EP1050390B1 (en)
JP (1) JP2000350940A (en)
AT (1) ATE336346T1 (en)
BR (1) BR0002084A (en)
DE (2) DE19921597C1 (en)
DK (1) DK1050390T3 (en)
ES (1) ES2269036T3 (en)

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DE10125922B4 (en) * 2001-05-21 2009-02-12 Pallmann Maschinenfabrik Gmbh & Co Kg Comminution unit of a comminution device for comminuting feed material, in particular knife basket of a chipper for wood
DE10124826A1 (en) * 2001-05-22 2002-12-05 Maier Zerkleinerungsanlage Gmb Knife package for a chipper
US7836923B2 (en) * 2002-10-25 2010-11-23 Key Knife, Inc. Ring slicer with easily removable knife and knife assembly
US6757952B1 (en) * 2002-10-25 2004-07-06 Key Knife, Inc. Ring slicer with easily removable knife and knife assembly
CN103085143B (en) * 2012-12-26 2015-03-11 上海恒纽科技发展有限公司 Method for preventing knife drum from being abraded
CN103465327B (en) * 2013-09-27 2016-08-24 金华市捷特包装有限公司 Cutter loop device and ring flaker for ring flaker
EP3071380B1 (en) * 2013-11-21 2020-06-17 Fam Knife assembly for flat knife blade and cutting system equipped with same
CN104450509B (en) * 2014-09-29 2016-02-03 江南大学 Spirulina cells broken wall shear
EP3527342A1 (en) * 2018-02-20 2019-08-21 Fam Knife assembly and cutting system equipped with same

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DE7031361U (en) * 1970-08-21 1971-04-01 Maier Dr Gerhard CUTTING ROTOR FOR ROTARY CUTTERS.
DE3247629C1 (en) * 1982-12-23 1984-03-22 Maschinenfabrik B.Maier GmbH & Co KG, 4800 Bielefeld Blade ring-type chip shredder - has chip-removing air flow produced by auxiliary rotor vanes in duct axially adjacent to chip outlet duct
US4651012A (en) 1985-03-21 1987-03-17 Martin Marietta Corporation High brilliance lensless projection system of test patterns
FR2663499B1 (en) * 1990-06-25 1992-10-16 Hesston Braud PROCESS FOR SHARPENING THE KNIVES OF A ROTARY DRUM AND ADJUSTING THE FIXED COUNTER KNIFE COOPERATING THEREWITH AND DEVICE IMPLEMENTING THIS PROCESS.
US5581605A (en) 1993-02-10 1996-12-03 Nikon Corporation Optical element, production method of optical element, optical system, and optical apparatus
US5439781A (en) 1993-05-10 1995-08-08 At&T Corp. Device fabrication entailing synchrotron radiation
DE4316514C2 (en) * 1993-05-18 1996-02-08 Pallmann Kg Maschf Method and device for resharpening the knives of comminution machines
US5339346A (en) 1993-05-20 1994-08-16 At&T Bell Laboratories Device fabrication entailing plasma-derived x-ray delineation
DE19518609C1 (en) * 1995-05-23 1996-02-01 Maier Zerkleinerungstech Gmbh Cutter for chippings
DE19605072C1 (en) * 1996-02-12 1997-10-02 Pallmann Kg Maschf Device for sharpening cutting tool fittings in wood chip-producing machine
US5737137A (en) 1996-04-01 1998-04-07 The Regents Of The University Of California Critical illumination condenser for x-ray lithography
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DE19629668C1 (en) * 1996-07-23 1998-01-02 Pallmann Kg Maschf Method and device for resharpening knives for shredding machines, in particular chipping knives for wood

Also Published As

Publication number Publication date
DK1050390T3 (en) 2006-12-27
DE50013318D1 (en) 2006-09-28
BR0002084A (en) 2001-01-02
ES2269036T3 (en) 2007-04-01
DE19921597C1 (en) 2000-07-27
US6561885B1 (en) 2003-05-13
JP2000350940A (en) 2000-12-19
EP1050390A3 (en) 2004-04-28
EP1050390A2 (en) 2000-11-08
ATE336346T1 (en) 2006-09-15

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