EP0744257A2 - Déchiqueteuse pour coupeaux de bois - Google Patents

Déchiqueteuse pour coupeaux de bois Download PDF

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Publication number
EP0744257A2
EP0744257A2 EP96106168A EP96106168A EP0744257A2 EP 0744257 A2 EP0744257 A2 EP 0744257A2 EP 96106168 A EP96106168 A EP 96106168A EP 96106168 A EP96106168 A EP 96106168A EP 0744257 A2 EP0744257 A2 EP 0744257A2
Authority
EP
European Patent Office
Prior art keywords
knife
rotor
wear
chipper
produced
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.)
Granted
Application number
EP96106168A
Other languages
German (de)
English (en)
Other versions
EP0744257A3 (fr
EP0744257B1 (fr
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 EP0744257A2 publication Critical patent/EP0744257A2/fr
Publication of EP0744257A3 publication Critical patent/EP0744257A3/fr
Application granted granted Critical
Publication of EP0744257B1 publication Critical patent/EP0744257B1/fr
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 chipper for wood chips according to the preamble of claim 1.
  • chippers have become known in a large number of embodiments. For example, reference is made to DE-U-9307371. Such chippers are supplied with wood chips of a certain size with the aim of breaking them down into chips, which are mainly processed by the chipboard industry.
  • the width of the gap mentioned is particularly critical in terms of the quality and the quantity of the chips produced. Another decisive factor is the extent to which the knife edge protrudes radially inward over the wear surface of the knife block towards the rotor. The distance between the wear surface and the rotor's flight circle is also important.
  • the wear plates are also rounded on their surface facing the rotor, so that they are also circular in their entirety.
  • the annular gap between the The wear surface of the support block and the flight circle of the rotor thus have a constant width.
  • the invention has for its object to make the construction of chippers of the type mentioned in such a way that the cutting process in its effect the piece of wood that is cut, less compressed, more space for chip removal, better division and less pressure is exposed. With the success of achieving higher performance with lower energy consumption with improved chip quality.
  • the inventor has recognized that the gap between the flight circle of the rotor and the total of the wear surfaces of the support blocks does not have to be constant, but that such chippers also work perfectly when the wear surfaces are completely flat, and the gap between the flight circle of the rotor and the guide surface , Guide surface or the like. Is accordingly variable over the circumference.
  • This guiding / guiding surface is particularly protected as a wear surface.
  • the width of the annular gap between the flight circle of the rotor and the wear surfaces thus does not remain constant over the circumference, but changes. If the wear surfaces are approximately flat or even completely flat, relaxation occurs immediately after the individual knife - viewed in the direction of rotation of the rotor - since the annular gap there initially has a somewhat larger width. The width then decreases to about the middle of the wear surface and approaches zero, before finally increasing again. There is therefore a very rapid change from compressing the chips and relaxing again and realigning the chips before the new cutting process, since the concentric gap towards the cutting tip, due to the almost flat plate is no longer available and the cutlet hits the knife edge freely. This has proven to be extremely advantageous. This makes it possible to increase chip quality and throughput while at the same time reducing energy requirements.
  • the chips that are produced with chippers according to the invention are of perfect quality. When the rotor rotates, there is no congestion, which had to be feared at first.
  • Figure 1 shows a reduced view of a chipper from the front, i.e. on the side on which the housing cover with the inlet for the wood chips is located.
  • Figure 2 shows on an enlarged scale in an axial section and in side view the same chipper.
  • FIG. 3 shows a detail from FIG. 2 in an enlarged representation.
  • Figure 4 shows a representation similar to that of Figure 3, but with a slightly different design of the knife pack.
  • the chipper comprises a rotor 1 which is driven by a shaft 2.
  • the rotor 1 contains a ring of axially parallel vanes 3.
  • a knife basket with knives 4 likewise arranged axially parallel surrounds the rotor 1.
  • the rotor 1 and knife basket are in turn arranged in a housing 5 and together enclosed by the latter.
  • Housing 5 has an inlet 6 for the wood chips to be fed and an outlet for the finished wood chips.
  • FIGS. 3 and 4 two knife packs are shown in a section perpendicular to the axis. These two knife sets are part of the knife ring of the machine.
  • Each knife pack is constructed as follows: A support block 10 carries a cutting knife 11 which is fastened to the support block 10 by means of a clamping plate 12 and a screw 13.
  • Each support block 10 has a wear surface 10.1. It is crucial that this wear surface 10.1 facing the machine axis is approximately flat and therefore not concentric as in the prior art.
  • the wear surface 10.1 in the case of FIG. 3 is formed from a wear plate 10.2, which in turn is attached to the rest of the support block 10.
  • the wear surface 10.1 is formed from a wear layer that was produced by applying a wear layer, preferably by cladding or spraying and then grinding.
  • a stick knife 14 is provided which is fastened on the side of the support block 10 opposite the cutting knife 11 and which cooperates with the cutting knife of the adjacent knife pack.
  • the embodiment according to FIG. 4 is a stickless embodiment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Shovels (AREA)
EP96106168A 1995-05-23 1996-04-19 Déchiqueteuse pour coupeaux de bois Expired - Lifetime EP0744257B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19518609A DE19518609C1 (de) 1995-05-23 1995-05-23 Zerspaner für Hackschnitzel
DE19518609 1995-05-23

Publications (3)

Publication Number Publication Date
EP0744257A2 true EP0744257A2 (fr) 1996-11-27
EP0744257A3 EP0744257A3 (fr) 1997-06-11
EP0744257B1 EP0744257B1 (fr) 2000-09-13

Family

ID=7762466

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96106168A Expired - Lifetime EP0744257B1 (fr) 1995-05-23 1996-04-19 Déchiqueteuse pour coupeaux de bois

Country Status (3)

Country Link
EP (1) EP0744257B1 (fr)
AT (1) ATE196274T1 (fr)
DE (2) DE19518609C1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT408968B (de) * 1999-05-28 2002-04-25 Andritz Patentverwaltung Vorrichtung zur verkleinerung der überdimensionierten fraktion von spänen
WO2006045568A3 (fr) * 2004-10-25 2006-07-27 Inotec Gmbh & Co Holding Und H Dispositif pour produire ou transformer des aliments

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0879680A3 (fr) * 1997-04-22 1999-11-03 Heinrich Prof. Dr. Ing. Feichtinger Dispositif de fixation des couteaux dans un rotor de coupe
DE19902417A1 (de) * 1998-05-16 1999-11-25 Maier Zerkleinerungsanlage Gmb Messerringzerspaner
DE19921597C1 (de) * 1999-05-07 2000-07-27 Maier Zerkleinerungsanlage Gmb Messerring-Zerspaner zum Zerspanen von Hackschnitzeln
DE10058626A1 (de) * 2000-11-25 2002-06-06 Maier Zerkleinerungstech Gmbh Verfahren und Vorrichtung zum Erzeugen von Spänen aus Holz
WO2003055657A1 (fr) * 2001-12-29 2003-07-10 Leon Terlecki Support de couteau segmente de decoupeuse a bois
US8161856B2 (en) 2006-04-18 2012-04-24 Urschel Laboratories, Inc. Apparatus for cutting food product
DE102006053033A1 (de) * 2006-11-10 2008-05-15 Loth, Robert, Dipl.-Ing. Messerringzerspaner und Verschleißplatte für einen solchen
DE102015003520B4 (de) 2015-03-20 2016-11-24 B. Maier Zerkleinerungstechnik Gmbh Verfahren und Vorrichtung zum Schleifen von Messern und Verschleißplatten eines Messerringes
DE202015002132U1 (de) 2015-03-20 2016-05-23 B. Maier Zerkleinerungstechnik Gmbh Vorrichtung zum Schleifen von Messern und Verschleißplatten des Messerringes eines Messerringzerspaners

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT295833B (de) * 1970-06-26 1972-01-25 Gerhard Dr Ing Maier Vorrichtung zum Zerspanen von kleinstückigem Material, insbesondere vorzerkleinertem Holz
DE7031361U (de) * 1970-08-21 1971-04-01 Maier Dr Gerhard Zerspanrotor fuer rotationszerspaner.
DE7609913U1 (de) * 1976-03-31 1976-07-29 Pallmann Kg Maschinenfabrik, 6660 Zweibruecken Verschleisschuh
DE2628764C3 (de) * 1976-06-26 1978-12-07 Gebr. Kloeckner Gmbh & Co, 5239 Hirtscheid Messerbefestigung in einem Messerring-Zerspaner für Hackschnitzel
DE3146861A1 (de) * 1981-11-26 1983-06-01 Hombak Maschinenfabrik Gmbh & Co Kg, 6550 Bad Kreuznach Verschleissschuh fuer einen messerringzerspaner
DE3517236A1 (de) * 1985-05-13 1986-11-13 Pallmann Maschinenfabrik GmbH & Co KG, 6660 Zweibrücken Messerhalterung an messerringen durch fliehkeil
US4972888A (en) * 1989-11-14 1990-11-27 Acrowood Corporation Blade-carrying drum assembly for chip slicing machines
AT401478B (de) * 1990-10-17 1996-09-25 Boehler Ybbstalwerke Auswechselbarer verschleissteil
DE4039217C2 (de) * 1990-12-08 1993-11-11 Willi Jacobs Rundschaftmeißel
DE9307371U1 (de) * 1992-11-28 1994-01-13 B. Maier Zerkleinerungstechnik Gmbh, 33649 Bielefeld Zerspaner für Hackschnitzel
EP0705668A1 (fr) * 1994-08-12 1996-04-10 B. Maier Zerkleinerungstechnik GmbH Déchiqueteuse à lames-couronne

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT408968B (de) * 1999-05-28 2002-04-25 Andritz Patentverwaltung Vorrichtung zur verkleinerung der überdimensionierten fraktion von spänen
US6409111B1 (en) 1999-05-28 2002-06-25 Andritz-Patentverwaltungs-Gmbh Apparatus for reducing the oversized fraction of chips
WO2006045568A3 (fr) * 2004-10-25 2006-07-27 Inotec Gmbh & Co Holding Und H Dispositif pour produire ou transformer des aliments

Also Published As

Publication number Publication date
EP0744257A3 (fr) 1997-06-11
EP0744257B1 (fr) 2000-09-13
ATE196274T1 (de) 2000-09-15
DE19518609C1 (de) 1996-02-01
DE59605865D1 (de) 2000-10-19

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