EP0705668A1 - Déchiqueteuse à lames-couronne - Google Patents

Déchiqueteuse à lames-couronne Download PDF

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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Withdrawn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)
English (en)
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/fr
Withdrawn legal-status Critical Current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, 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.

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)
EP95107833A 1994-08-12 1995-05-23 Déchiqueteuse à lames-couronne Withdrawn EP0705668A1 (fr)

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 (fr) 1996-04-10

Family

ID=6525558

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95107833A Withdrawn EP0705668A1 (fr) 1994-08-12 1995-05-23 Déchiqueteuse à lames-couronne

Country Status (1)

Country Link
EP (1) EP0705668A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0744257A3 (fr) * 1995-05-23 1997-06-11 Maier Zerkleinerungstech Gmbh Déchiqueteuse pour coupeaux de bois
AT406132B (de) * 1998-05-28 2000-02-25 Boehler Miller Messer Und Saeg Anordnung eines einweg-kamm-messers in einer messerwalze
WO1999059784A3 (fr) * 1998-05-16 2000-04-06 Maier Zerkleinerungstech Gmbh Systeme d'enlevement de copeaux a lames en anneau

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1199477B (de) * 1964-06-06 1965-08-26 Condux Werk Maschine zum Zerspanen, insbesondere von Holz
DE2318731A1 (de) * 1973-04-13 1974-10-24 Maier Kg Maschf B Trommelartiger messerkorb mit auswechselbaren messerpaketen
DE2360297A1 (de) * 1973-12-04 1975-06-05 Paul A Dr Ing Kirsten Messerschnellwechsel fuer messerringzerspaner
DE2410176A1 (de) 1974-03-04 1975-09-18 Paul A Dr Ing Kirsten Luftfuehrungen in messerring-spanern insbesondere fuer hackschnitzel
DE2628764A1 (de) * 1976-06-26 1977-12-29 Kloeckner Gmbh & Co Geb Messerbefestigung in messerring-zerspanern fuer hackschnitzel
DE3146861A1 (de) * 1981-11-26 1983-06-01 Hombak Maschinenfabrik Gmbh & Co Kg, 6550 Bad Kreuznach Verschleissschuh fuer einen messerringzerspaner
US4972888A (en) * 1989-11-14 1990-11-27 Acrowood Corporation Blade-carrying drum assembly for chip slicing machines
EP0481952A1 (fr) * 1990-10-17 1992-04-22 BÖHLER YBBSTALWERKE G.m.b.H. Pièce soumise à l'usure remplaçable
DE9206975U1 (de) * 1991-05-23 1992-09-17 Globus S.r.l., Galliate, Novara Zerspanungsmaschine für Holz und holzähnliches Material

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1199477B (de) * 1964-06-06 1965-08-26 Condux Werk Maschine zum Zerspanen, insbesondere von Holz
DE2318731A1 (de) * 1973-04-13 1974-10-24 Maier Kg Maschf B Trommelartiger messerkorb mit auswechselbaren messerpaketen
DE2360297A1 (de) * 1973-12-04 1975-06-05 Paul A Dr Ing Kirsten Messerschnellwechsel fuer messerringzerspaner
DE2410176A1 (de) 1974-03-04 1975-09-18 Paul A Dr Ing Kirsten Luftfuehrungen in messerring-spanern insbesondere fuer hackschnitzel
DE2628764A1 (de) * 1976-06-26 1977-12-29 Kloeckner Gmbh & Co Geb Messerbefestigung in messerring-zerspanern fuer hackschnitzel
DE3146861A1 (de) * 1981-11-26 1983-06-01 Hombak Maschinenfabrik Gmbh & Co Kg, 6550 Bad Kreuznach Verschleissschuh fuer einen messerringzerspaner
US4972888A (en) * 1989-11-14 1990-11-27 Acrowood Corporation Blade-carrying drum assembly for chip slicing machines
EP0481952A1 (fr) * 1990-10-17 1992-04-22 BÖHLER YBBSTALWERKE G.m.b.H. Pièce soumise à l'usure remplaçable
DE9206975U1 (de) * 1991-05-23 1992-09-17 Globus S.r.l., Galliate, Novara Zerspanungsmaschine für Holz und holzähnliches Material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0744257A3 (fr) * 1995-05-23 1997-06-11 Maier Zerkleinerungstech Gmbh Déchiqueteuse pour coupeaux de bois
WO1999059784A3 (fr) * 1998-05-16 2000-04-06 Maier Zerkleinerungstech Gmbh Systeme d'enlevement de copeaux a lames en anneau
AT406132B (de) * 1998-05-28 2000-02-25 Boehler Miller Messer Und Saeg Anordnung eines einweg-kamm-messers in einer messerwalze

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