EP0255546A1 - Wood-support knife guides for wood chipping machines - Google Patents

Wood-support knife guides for wood chipping machines Download PDF

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Publication number
EP0255546A1
EP0255546A1 EP86110386A EP86110386A EP0255546A1 EP 0255546 A1 EP0255546 A1 EP 0255546A1 EP 86110386 A EP86110386 A EP 86110386A EP 86110386 A EP86110386 A EP 86110386A EP 0255546 A1 EP0255546 A1 EP 0255546A1
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EP
European Patent Office
Prior art keywords
knife holder
wood
support means
wood support
setbolt
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
EP86110386A
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German (de)
French (fr)
Other versions
EP0255546B1 (en
Inventor
Dominique Sentagnes
Rony Callens
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.)
Dimetal
Original Assignee
Dimetal
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
Priority to DE19853508971 priority Critical patent/DE3508971A1/en
Application filed by Dimetal filed Critical Dimetal
Priority to EP19860110386 priority patent/EP0255546B1/en
Publication of EP0255546A1 publication Critical patent/EP0255546A1/en
Application granted granted Critical
Publication of EP0255546B1 publication Critical patent/EP0255546B1/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 wooden support along with fasteners for full cut knives (strip knives) with integrated scoring devices according to DE-PS 28 18 143 or DE-PS 29 52 710.
  • these integrated scoring devices according to DE-OS 31 00 310 can also be asymmetrical.
  • the object of the invention is to provide a wooden support and fasteners in which no material displacement in the direction along the plane of the knife holder can occur.
  • the wooden supports according to the invention should be able to be manufactured from all possible highly wear-resistant materials, be exchangeable in the shortest possible time and be designed so that at least no splinters can get stuck between them and the scoring ribs.
  • the invention solves this problem with a wooden support and fasteners in which the necessary screwing forces are predominantly or wholly introduced in the direction perpendicular to the plane of the knife holder.
  • the wooden support is used on one or both sides Provide gradations or wedge surfaces that serve as fastening surfaces for the fastening screws.
  • the surfaces of the wooden support facing the scoring ribs enclose the respective scoring rib in a corresponding manner.
  • the wooden support 1 is accommodated in the knife holder 5, against which the full carving knife 3 with integrated scoring ribs rests.
  • the wooden support 1 connects to the wooden support 2 in the centrifugal wedge 6, which sits in a corresponding groove in the cutter head 7.
  • a countersunk screw 9 according to DIN 7991 clamps the wooden support 1 in the area of the wedge pressure surface 10.
  • a socket head screw 11 with a hexagon socket according to DIN 912 can fix the wooden support 1 in the area of the pressure surface 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Milling, Drilling, And Turning Of Wood (AREA)

Abstract

1. A wood support means along with fastening means in a knife holder for wood cutting machines, equipped with full cut knives with integrated slitters, the knife holder lying against the centrifugal wedge, and the wood support means being fixed on the knife holder with a fastening screw which engages the knife holder and acts against a contact surface on the wood support means, characterized in that a setbolt-like widened portion is provided at the radially inside end of the wood support means (1), the setbolt axis being on the center plane of the wood support means (1) and perpendicular to the plane of the knife holder (5) and the head being formed in the direction of the knife (3), the knife holder (5) having a correspondingly shaped step bore open on the radial outside for insertion of the setbolt-like widened portion of the wood support means (1), and the contact surface (10, 12) for the fastening screw (9) being provided on the head of the setbolt-like widened portion, said screw preventing the wood support means (1) from falling out without taking up essential clamping forces between the wood support means (1) and the knife holder (5).

Description

Gegenstand der Erfindung ist eine Holzabstützung nebst Befestigungsmitteln für Vollschnittmesser (Streifenmesser) mit integrierten Ritzern gemäß DE-PS 28 18 143 bzw. DE-PS 29 52 710. Für Schrägschnittwellen können diese integrier­ten Ritzer gemäß DE-OS 31 00 310 auch asymetrisch ausgebildet sein.The invention relates to a wooden support along with fasteners for full cut knives (strip knives) with integrated scoring devices according to DE-PS 28 18 143 or DE-PS 29 52 710. For inclined cutting shafts, these integrated scoring devices according to DE-OS 31 00 310 can also be asymmetrical.

Diese Holzabstützungen können entweder im Fliehkeil untergebracht werden (DE-PS 26 23 182), wobei dann das Messer direkt an dem Fliehkeil anliegt, oder teils im Fliehkeil, teils im Messerhalter (DE-P 34 15 656.9- 15), wobei der Messerhalter zwischen Messer und Fliehkeil Anordnung findet.These wooden supports can either be accommodated in the centrifugal wedge (DE-PS 26 23 182), in which case the knife rests directly on the centrifugal wedge, or partly in the centrifugal wedge, partly in the knife holder (DE-P 34 15 656.9- 15), the knife holder between Knife and centrifugal wedge arrangement takes place.

Letztgenannte Anordnung hat den Vorteil höherer Betriebs­sicherheit (vgl. DE-P 34 15 656.9-15, Seite 4, letzter Absatz bis Seite 6 einschließlich). Holzabstützungen sind hohen mechanischen Beanspruchungen und starkem Verschleiß unterworfen. Dementsprechend ist ihre sichere Klemmung und ihre Fertigung aus hochverschleißfestem Material von erheblicher Bedeutung.The latter arrangement has the advantage of greater operational reliability (cf. DE-P 34 15 656.9-15, page 4, last paragraph up to page 6 inclusive). Wooden supports are subject to high mechanical loads and heavy wear. Accordingly, their secure clamping and their manufacture from highly wear-resistant material are of considerable importance.

Allen bisher bekanntgewordenen Holzabstützungen ist der Nachteil gemeinsam, daß ihre Befestigung im Messerhalter zu Materialverdrängungen und damit zu Verbiegungen des Messerhalters führen kann, die sich nachteilig auf die Spanqualität auswirken. Das gilt sowohl für die Befesti­gung mittels Nieten wie mittels Klemmkeilen entsprechend DE-P 34 32 329.5-15. Die Holzabstützung gemäß belgischer Patentschrift 875 168 versucht dieses Problem in der Weise zu lösen, daß das im Messerhalter verankerte Unterteil der Holzabstützung als offener Klemmring ausgebildet wird. Diese Art der Befestigung weist jedoch nicht die gleiche Betriebssicherheit auf, wie eine genietete Verbindung bzw. ein fest verschraubter Klemmkeil. Nachteilig ist ferner, daß der gewünschte Federeffekt des Klemmrings nicht in hochverschleißfestem Material erzielt werden kann, weil diese zu spröde ist, Ein weiterer Nachteil aller bisher bekanntgewordenen Holzabstützungen für Vollschnittmesser ist darin zu sehen, daß sich aufbackender Holzstaub und -splitter zwischen Ritzerrippen und ihren jeweiligen Holzabstützungen festsetzen können und damit einen ein­wandfreien Quertrennschnitt des Holzes durch die Ritzer­spitzen bzw. -schneiden verhindern.All previously known wooden supports have the disadvantage in common that their attachment in the knife holder to material displacement and thus to bending of the Knife holder can lead, which adversely affect the chip quality. This applies both to fastening by means of rivets and by means of wedges in accordance with DE-P 34 32 329.5-15. The wooden support according to Belgian patent 875 168 tries to solve this problem in such a way that the lower part of the wooden support anchored in the knife holder is designed as an open clamping ring. However, this type of attachment does not have the same operational reliability as a riveted connection or a firmly screwed clamping wedge. Another disadvantage is that the desired spring effect of the clamping ring cannot be achieved in highly wear-resistant material because it is too brittle. Another disadvantage of all previously known wooden supports for full-cut knives is that baking-up wood dust and splinters between scoring ribs and their respective ones Can fix wood supports and thus prevent a perfect cross-cut of the wood by the scribe tips or cutting.

Aufgabe der Erfindung ist es, eine Holzabstützung nebst Befestigungsmitteln aufzuzeigen, bei denen keinerlei Materialverdrängungen in Richtung längs zur Ebene des Messerhalters auftreten können. Die erfindungsgemäßen Holzabstützungen sollen aus allen infragekommenden hoch­verschleißfesten Stoffen gefertigt werden können, in kürzester Zeit austauschbar sein und so ausgebildet sein, daß sich zumindest keine Splitter zwischen ihnen und den Ritzerrippen festsetzen können.The object of the invention is to provide a wooden support and fasteners in which no material displacement in the direction along the plane of the knife holder can occur. The wooden supports according to the invention should be able to be manufactured from all possible highly wear-resistant materials, be exchangeable in the shortest possible time and be designed so that at least no splinters can get stuck between them and the scoring ribs.

Die Erfindung löst diese Aufgabe durch eine Holzabstützung nebst Befestigungsmitteln, bei denen die notwendigen Schraubkräfte vorwiegend oder zur Gänze in Richtung senkrecht zur Ebene des Messerhalters eingeleitet werden. Hierzu wird die Holzabstützung ein- oder beidseitig mit Abstufungen oder Keilflächen versehen, die den Befesti­gungsschrauben als Anpreßflächen dienen. Die den Ritzer­rippen zugewandten Flächen der Holzabstützung umschließen die jeweilige Ritzerrippe formentsprechend.The invention solves this problem with a wooden support and fasteners in which the necessary screwing forces are predominantly or wholly introduced in the direction perpendicular to the plane of the knife holder. For this purpose, the wooden support is used on one or both sides Provide gradations or wedge surfaces that serve as fastening surfaces for the fastening screws. The surfaces of the wooden support facing the scoring ribs enclose the respective scoring rib in a corresponding manner.

Die Figuren erläutern die erfindungsgemäße Holzabstützung:

  • Fig. 1 zeigt die Anordnung der Holzabstützung in der Messerwelle,
  • Fig. 2 zeigt in Draufsicht die Befestigung der Holzab­stützung im Messerhalter,
  • Fig. 3 zeigt im Schnitt die Anbringung der Holzabstüt­zung im Messerhalter mittels Senkschrauben nach DIN 7991,
  • Fig. 4 zeigt im Schnitt die Anbringung der Holzabstüt­zung im Messerhalter mittels Zylinderschrauben mit Innensechskant nach DIN 912,
  • Fig. 5 zeigt die Holzabstützung mit Keilanpreßfläche,
  • Fig. 6 zeigt die Holzabstützung mit parallel zur Messer­halterebene verlaufender Abstufung als Anpreßflä­che,
  • Fig. 7 zeigt im Schnitt Messer mit Ritzerrippe, die von den Anlageflächen der Holzabstützung umschlossen wird.
The figures explain the wooden support according to the invention:
  • 1 shows the arrangement of the wooden support in the knife shaft,
  • 2 shows a top view of the fastening of the wooden support in the knife holder,
  • 3 shows in section the attachment of the wooden support in the knife holder by means of countersunk screws according to DIN 7991,
  • 4 shows in section the attachment of the wooden support in the knife holder by means of socket head screws with hexagon socket according to DIN 912,
  • 5 shows the wooden support with a wedge pressure surface,
  • 6 shows the wooden support with gradation running parallel to the knife holder plane as a contact surface,
  • Fig. 7 shows in section knives with scoring rib, which is enclosed by the contact surfaces of the wooden support.

Die Holzabstützung 1 wird in dem Messerhalter 5 unterge­bracht, an dem das Vollschnitzmesser 3 mit integrierten Ritzerrippen anliegt.The wooden support 1 is accommodated in the knife holder 5, against which the full carving knife 3 with integrated scoring ribs rests.

Die Holzabstützung 1 schließt an die Holzabstützung 2 im Fliehkeil 6 an, der in einer entsprechend Nut des Messerkopfes 7 sitzt.The wooden support 1 connects to the wooden support 2 in the centrifugal wedge 6, which sits in a corresponding groove in the cutter head 7.

Die Anlageflächen 8 der Holzabstützung 1 umschließen die Ritzerrippe 4 vollständig. Eine Senkschraube 9 nach DIN 7991 klemmt die Holzabstützung 1 im Bereich der Keilan­preßfläche 10. Alternativ kann eine Zylinderschraube 11 mit Innensechskant nach DIN 912 die Holzabstützung 1 im Bereich der Anpreßfläche 12 feststellen.The contact surfaces 8 of the wooden support 1 completely enclose the scoring rib 4. A countersunk screw 9 according to DIN 7991 clamps the wooden support 1 in the area of the wedge pressure surface 10. Alternatively, a socket head screw 11 with a hexagon socket according to DIN 912 can fix the wooden support 1 in the area of the pressure surface 12.

Claims (3)

1. Holzabstützung nebst Befestigungsmitteln in einem Messerhalter für Holzzerspanungsmaschinen, bestückt mit Vollschnittmessern mit integrierten Ritzern, wobei der Messerhalter dem Fliehkeil anliegt, dadurch gekenn­zeichnet, daß die Holzabstützung (1) im Messerhalter (5), mit einer Senkschraube (9) gegen eine Keilanpreß­fläche (10) wirkend, in Sollposition festgeklemmt wird, wobei die Keilanpreßfläche (10) in einem spitzen Winkel zur Längseben des Messerhalters (5) verläuft.1. Wood support together with fasteners in a knife holder for wood-cutting machines, equipped with full-cut knives with integrated scoring, the knife holder abutting the centrifugal wedge, characterized in that the wooden support (1) in the knife holder (5) with a countersunk screw (9) against a wedge pressure surface ( 10) acting, is clamped in the desired position, the wedge pressure surface (10) extending at an acute angle to the longitudinal plane of the knife holder (5). 2. Holzabstützung nach Anspruch 1, dadurch gekennzeichnet, daß Holzabstützung (1) im Messerhalter (5) mit einer Zylinderschraube (11) gegen eine abgestufte Anpreßflä­che (12) wirkend, im Sollposition festgeklemmt wird, wobei die abgestufte Anpreßfläche (12) parallel zur Längsebene des Messerhalters (5) verläuft.2. Wood support according to claim 1, characterized in that the wooden support (1) in the knife holder (5) with a cylinder screw (11) acting against a stepped contact surface (12) is clamped in the desired position, the stepped contact surface (12) parallel to the longitudinal plane the knife holder (5). 3. Holzabstützung nach Anspruch 1 oder 2, dadurch gekenn­zeichnet, daß die der Ritzerrippe (4) zugewandten Anlageflächen (8) der Holzabstützung (1) eine Ritzer­rippe (4) umschließen.3. Wood support according to claim 1 or 2, characterized in that the scoring rib (4) facing contact surfaces (8) of the wood support (1) enclose a scoring rib (4).
EP19860110386 1985-03-13 1986-07-28 Wood-support knife guides for wood chipping machines Expired - Lifetime EP0255546B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19853508971 DE3508971A1 (en) 1985-03-13 1985-03-13 Wood support in cutter holders for woodworking machines
EP19860110386 EP0255546B1 (en) 1986-07-28 1986-07-28 Wood-support knife guides for wood chipping machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19860110386 EP0255546B1 (en) 1986-07-28 1986-07-28 Wood-support knife guides for wood chipping machines

Publications (2)

Publication Number Publication Date
EP0255546A1 true EP0255546A1 (en) 1988-02-10
EP0255546B1 EP0255546B1 (en) 1990-06-13

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EP19860110386 Expired - Lifetime EP0255546B1 (en) 1985-03-13 1986-07-28 Wood-support knife guides for wood chipping machines

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB967770A (en) * 1962-09-03 1964-08-26 Kirsten Paul A Cylindrical tool carrier for machines for chipping timber substantially parallel to the fibre
DE2345961A1 (en) * 1973-09-12 1975-03-20 Buerener Maschf Gmbh Wood chipper blade shaft - has two blades offset on common holder, for comb and/or stripper blades
FR2332108A1 (en) * 1975-11-21 1977-06-17 Pessa Oleodinamica Wood comminution and chip production system - has roller with inbuilt knives and section breaker elements
BE875168A (en) * 1979-03-29 1979-07-16 Special Repair Services Srs MACHINE FOR CUTTING CHIPS FROM WOOD BLOCKS AND KNIFE FOR SUCH MACHINE
SU967828A1 (en) * 1978-06-30 1982-10-23 Московский Ордена Трудового Красного Знамени Завод Деревообрабатывающих Станков И Автоматических Линий Blade shaft of chipping machine
EP0085040A2 (en) * 1982-01-21 1983-08-03 Vereinigte Edelstahlwerke Aktiengesellschaft (Vew) Tool spindle for the manufacture of flat wood chips
DE3412251A1 (en) * 1984-04-02 1985-10-10 Dimetal Z.I. du Phare, Mérignac Cutter holder for the cutter shaft of a woodworking machine
DE3415656A1 (en) * 1984-04-27 1985-10-31 Inter-Wood-Maschinen GmbH & Co KG, 8923 Lechbruck Cutter holder for the bevel-cutting cutter head of a woodworking machine
DE3432329A1 (en) * 1984-04-27 1986-03-13 Inter-Wood-Maschinen GmbH & Co KG, 8923 Lechbruck Cutter holder for the cutter head of a wood-cutting machine
DE3508971A1 (en) * 1985-03-13 1986-09-18 Dimetal Z.I. du Phare, Mérignac Wood support in cutter holders for woodworking machines

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB967770A (en) * 1962-09-03 1964-08-26 Kirsten Paul A Cylindrical tool carrier for machines for chipping timber substantially parallel to the fibre
DE2345961A1 (en) * 1973-09-12 1975-03-20 Buerener Maschf Gmbh Wood chipper blade shaft - has two blades offset on common holder, for comb and/or stripper blades
FR2332108A1 (en) * 1975-11-21 1977-06-17 Pessa Oleodinamica Wood comminution and chip production system - has roller with inbuilt knives and section breaker elements
SU967828A1 (en) * 1978-06-30 1982-10-23 Московский Ордена Трудового Красного Знамени Завод Деревообрабатывающих Станков И Автоматических Линий Blade shaft of chipping machine
BE875168A (en) * 1979-03-29 1979-07-16 Special Repair Services Srs MACHINE FOR CUTTING CHIPS FROM WOOD BLOCKS AND KNIFE FOR SUCH MACHINE
EP0085040A2 (en) * 1982-01-21 1983-08-03 Vereinigte Edelstahlwerke Aktiengesellschaft (Vew) Tool spindle for the manufacture of flat wood chips
DE3412251A1 (en) * 1984-04-02 1985-10-10 Dimetal Z.I. du Phare, Mérignac Cutter holder for the cutter shaft of a woodworking machine
DE3415656A1 (en) * 1984-04-27 1985-10-31 Inter-Wood-Maschinen GmbH & Co KG, 8923 Lechbruck Cutter holder for the bevel-cutting cutter head of a woodworking machine
DE3432329A1 (en) * 1984-04-27 1986-03-13 Inter-Wood-Maschinen GmbH & Co KG, 8923 Lechbruck Cutter holder for the cutter head of a wood-cutting machine
DE3508971A1 (en) * 1985-03-13 1986-09-18 Dimetal Z.I. du Phare, Mérignac Wood support in cutter holders for woodworking machines

Also Published As

Publication number Publication date
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