WO2008038120A1 - Ensemble lame pour machines à scier des panneaux en bois ou en matériaux similaires - Google Patents

Ensemble lame pour machines à scier des panneaux en bois ou en matériaux similaires Download PDF

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Publication number
WO2008038120A1
WO2008038120A1 PCT/IB2007/002827 IB2007002827W WO2008038120A1 WO 2008038120 A1 WO2008038120 A1 WO 2008038120A1 IB 2007002827 W IB2007002827 W IB 2007002827W WO 2008038120 A1 WO2008038120 A1 WO 2008038120A1
Authority
WO
WIPO (PCT)
Prior art keywords
flange
blade
pin
hole
unit according
Prior art date
Application number
PCT/IB2007/002827
Other languages
English (en)
Inventor
Piergiorgio Benuzzi
Original Assignee
Giben International S.P.A.
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 Giben International S.P.A. filed Critical Giben International S.P.A.
Publication of WO2008038120A1 publication Critical patent/WO2008038120A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B5/00—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor
    • B27B5/29—Details; Component parts; Accessories
    • B27B5/30—Details; Component parts; Accessories for mounting or securing saw blades or saw spindles
    • B27B5/32—Devices for securing circular saw blades to the saw spindle

Definitions

  • This invention relates to a blade unit for panel saw machines for panels made of wood or similar materials.
  • This blade unit forms part of panel saw machines which essentially comprise: a main frame comprising a first horizontal table; means for advancing the panels along a defined feed line and usually consisting of a crossbar mobile in parallel along said first horizontal table and equipped with clamps used for gripping the panel or panels to be sawn; a straight cutting unit or cutting front transversal to the feed line and comprising a beam that mounts one or two hold-down bars for pressing down on the panels, and a carriage, positioned near the beam and equipped with at least one mobile circular blade designed to cut the panels along a line transversal to the beam and usually passing between the hold-down bars; a second table, positioned in front of the cutting front, downstream of the cutting unit relative to the direction of panel feed on the first horizontal table, for supporting the panels and/or the respective panel lengths obtained by cutting.
  • the above mentioned blade unit which this specification refers to in particular, comprises at least one motor-driven blade hub equipped with a pair of facing flanges and enclosing the circular saw blade.
  • the first flange is rigidly connected to (or made as a single part with) the hub, while the second flange is equipped with means for locking/releasing it to/from the first flange when the blade is changed.
  • these locking/releasing means comprise a socket of the type for a bayonet coupling in the blade hub and a series of fixing pins on the second flange that fit into matching holes in the first flange.
  • the pins are held in the coupled position in the first flange by respective spring means located inside the holes in the flange body. Inside the flange body, there is also a chamber or conduit equipped with a diaphragm that is in contact with the spring means.
  • the conduit can be made to communicate with the outside through a sealed connection so that a fluid (usually air) can, when necessary, be pumped into it to compress the spring elements and thus move the pins out of the holes in the second flange to allow the second flange to be turned and disengaged from the first flange to change the blade.
  • a fluid usually air
  • the aim of this invention is to overcome the above mentioned disadvantages by providing a blade unit for panel saw machines for panels made of wood or similar materials that has an extremely simplified constructional architecture and blade lock/release system without reducing machine quality and operating safety.
  • this aim is achieved by a blade unit for panel saw machines, especially a blade unit for panel saw machine for panels made of wood or similar materials, comprising the technical characteristics described in one or more of the appended claims.
  • Figure 1 is a schematic top plan view of a panel saw machine for panels made of wood or similar materials equipped with a blade unit according to the invention
  • FIGs 3, 4 and 5 are side views with some parts in cross section and others cut away in order to better illustrate others, showing the blade unit in three different configurations, with the blade in locked, pre-released and released conditions, respectively.
  • the blade unit according to the invention is used on panel saw machines 1 for cutting panels 4 made of wood or similar materials, illustrated schematically in Figure 1.
  • This panel saw machine 1 essentially comprises: a horizontal table 5 for supporting the panels 4; means 50 for advancing the panels 4 along a feed line A and mobile in a direction parallel to and along the horizontal table 5 (illustrated schematically with gripper clamps 50p, being of customary type and not strictly relevant to this invention); and a blade unit 2 comprising a carriage 3 that moves along a panel 4 cutting direction T transversal to the feed direction A in which the panels 4 are advanced along the table 5 (see also Figure 2). On the mobile carriage 3 there is a power-driven shaft 7 to which at least one circular saw blade 6 is rotatably connected.
  • the circular blade 6 is mounted on a block 8 comprising a first and a second flange 9 and 10, facing each other, for holding the blade 6 which is positioned between the flanges 9 and 10 themselves.
  • the first flange 9 revolves as one with the power-driven shaft 7, while the second flange 10 is equipped with means 11 for locking and releasing the blade 6 from the shaft 7 and acting between the two flanges 9 and 10 in such a way as to move them away and towards each other in such a way as to disengage and engage them to allow the blade 6 to be changed.
  • the locking and releasing means 11 comprise: a first central pin 12 housed in the second flange 10 and affording a protruding end 12a that can be screwed into a first central hole 13 in the first flange 9; manual operating means 14, positioned on the second flange 10, acting between the second flange 10 and the first central pin 12 and designed to enable the second flange 10 and the first central pin 12 to move axially relative to each other in such a way as to define two stable end limit positions where: the second flange 10 is partly detached from the first flange 9 (see arrows F, Figure 4) in such way that the first pin 12 can be disengaged manually from the first flange 9 (see arrows Fl, Figure 5); and the second flange 10 is moved manually into a safety position in contact with the blade 6 (see arrows F2, Figure 4) after the first pin 12 has been manually coupled with the first flange 9 (see arrow F3, Figure 3).
  • the blade unit 2 may comprise safe positioning means 25 acting between the operating means 14 and the second flange 10 and designed, respectively: to enable the operating means 14 to be manually released from the second flange 10 so that the latter can be moved to the partly detached position; and snap the operating means 14 into place on the second flange 10 when the second flange 10 is moved into contact with the blade 6.
  • safe positioning means 25 acting between the operating means 14 and the second flange 10 and designed, respectively: to enable the operating means 14 to be manually released from the second flange 10 so that the latter can be moved to the partly detached position; and snap the operating means 14 into place on the second flange 10 when the second flange 10 is moved into contact with the blade 6.
  • the first central pin 12 is divided into a first portion 12b and the above mentioned threaded end 12a.
  • the first portion 12b is housed in a second hole 15 in the second flange 10 and held rotationally in place by a key 16 positioned between the first portion 12b and an annular contact element 17 for closing the second hole 15 and which is integral with the second flange 10.
  • the threaded end 12a protrudes from the contact element 17.
  • the first spring means 21 enable the second flange 10 to be partially detached from the first flange 9 when a manual screwing movement is imparted to the third flange 18 (see arrow F18) causing the third and second flanges 18 and 10 to move axially relative to each other in such a way as to compress the first spring means 21.
  • an interposed key 16 housed partially in a matching widened part 17b of the central hole 17a in the annular contact element 17 enabling the first pin 12 and the second flange 10 to revolve as one with the power-driven shaft 7 and, when required, letting the third and second flanges 18 and 10 to slide axially relative to each other while keeping the first pin 12 in a stable position.
  • the above mentioned positioning means 25 comprise: an element or button 22 housed in a fourth radial hole 23 in the body 24 of the second flange 10 and open at the top where there is a respective fifth radial through hole 26 made in the third flange 18 allowing the end of the button 22 to protrude when the second flange 10 is moved into contact with the blade 6 and the second and third flanges 10 and 18 are locked to each other; second spring means 27 positioned between the button 22 and the bottom of the fourth hole 23 in the second flange 10, said second spring means 27 being designed to be compressed by external manual action (see arrow F27), enabling the protruding part of the button 22 to move into the third flange 18 so that the third flange 18 can be activated in such a way as to partly detach the second flange 10 from the first flange 9 as described above.
  • the blade 6 may turn in a first cutting direction V and the above mentioned protruding part 12a of the first pin 12 may be threaded so that it can be screwed into the first hole 13 in the opposite direction Vl to the direction of rotation V of the blade 6.
  • the second pin 19 of the third flange 18 may be threaded in such a way as to be screwed into the third hole 20 in a direction V2 (to achieve the detached configuration) that is the same as the direction Vl in which the protruding end 12a of the first pin 12 is screwed.
  • the blade 6 can be released manually in the following steps: pressing the button 22 (arrow F27) to disengage the third flange 18; manually screwing the third flange 18 in direction V2 to cause the first pin 12 and the second flange 10 to move axially relative to each other (arrow F) so that the latter is detached from the first flange 9 ( Figure 4); manually unscrewing the first pin 12 from the first hole 13 by gripping the body 24 of the second flange 10 ( Figure 5).
  • the blade 6 can be removed from the first flange 9 and replaced with a new blade 6.
  • a blade unit made as described above fully achieves the above mentioned aims thanks to blade lock/release components with an extremely simple structure.
  • the operating safety of the blade unit is not reduced, thanks also to the button which, besides providing the end position of the third flange, prevents unwanted movements between the second and third flanges.

Abstract

Ensemble lame pour machines à scier des panneaux, ledit ensemble lame comprenant : un chariot (3) qui se déplace dans une direction de coupe (T) ; une lame de scie circulaire (6) couplée à un arbre motorisé (7) monté sur le chariot (3) ; un socle de fixation (8) de lame (6) comprenant un premier flasque (9) et un deuxième flasque (10) en regard l'un de l'autre, le premier flasque (9) étant solidaire en rotation avec l'arbre motorisé (7) et le deuxième flasque (10) étant équipé de moyens (11) de blocage et de déblocage de la lame (6) vis-à-vis de l'arbre (7) et comprenant une première broche centrale (12) reçue dans le deuxième flasque (10) et présentant une extrémité saillante (12a) susceptible d'être vissée dans un premier trou central (13) ménagé dans le premier flasque (9), et de moyens d'actionnement manuel (14) montés sur le deuxième flasque (10) et agissant entre le deuxième flasque (10) et la première broche centrale (12) de manière à permettre au deuxième flasque (10) de se déplacer axialement par rapport à la première broche centrale (12) et définir ainsi deux positions extrêmes limites où le deuxième flasque (10) est partiellement détaché du premier flasque (9) en permettant ainsi le retrait manuel de la première broche (12) du premier flasque (9), et où le deuxième flasque (10) est placé manuellement au contact de la lame (6) une fois que la première broche (12) a été couplée manuellement au premier flasque (9).
PCT/IB2007/002827 2006-09-29 2007-09-27 Ensemble lame pour machines à scier des panneaux en bois ou en matériaux similaires WO2008038120A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBO20060674 ITBO20060674A1 (it) 2006-09-29 2006-09-29 Gruppo lama per macchine sezionatrici di pannelli in legno od assimilabili.
ITBO2006A000674 2006-09-29

Publications (1)

Publication Number Publication Date
WO2008038120A1 true WO2008038120A1 (fr) 2008-04-03

Family

ID=38961874

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2007/002827 WO2008038120A1 (fr) 2006-09-29 2007-09-27 Ensemble lame pour machines à scier des panneaux en bois ou en matériaux similaires

Country Status (2)

Country Link
IT (1) ITBO20060674A1 (fr)
WO (1) WO2008038120A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0798064A1 (fr) * 1996-03-28 1997-10-01 HOLZMA-MASCHINENBAU GmbH Dispositif de serrage pour outils en forme de disque
DE20008945U1 (de) * 2000-05-22 2001-10-04 Holzma Plattenaufteiltechnik Lagervorrichtung für ein rotierendes, rotationssymmetrisches Werkzeug
EP1250989A2 (fr) * 2000-09-08 2002-10-23 Black & Decker Inc. Ensemble d'embrayage et dispositif de serrage pour outil de coupe rotatif
EP1362656A1 (fr) * 2002-05-15 2003-11-19 REICH SPEZIALMASCHINEN GmbH Dispositif de traitement des panneaux
EP1375094A1 (fr) * 2002-06-18 2004-01-02 Black & Decker Inc. Mécanisme de serrage et ensemble d'embrayage pour outil de coupe rotatif
WO2006024058A1 (fr) * 2004-09-03 2006-03-09 Panhans Maschinenbau Gmbh Installation d'usinage, en particulier installation de delignage et de decoupage de panneaux

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0798064A1 (fr) * 1996-03-28 1997-10-01 HOLZMA-MASCHINENBAU GmbH Dispositif de serrage pour outils en forme de disque
DE20008945U1 (de) * 2000-05-22 2001-10-04 Holzma Plattenaufteiltechnik Lagervorrichtung für ein rotierendes, rotationssymmetrisches Werkzeug
EP1250989A2 (fr) * 2000-09-08 2002-10-23 Black & Decker Inc. Ensemble d'embrayage et dispositif de serrage pour outil de coupe rotatif
EP1362656A1 (fr) * 2002-05-15 2003-11-19 REICH SPEZIALMASCHINEN GmbH Dispositif de traitement des panneaux
EP1375094A1 (fr) * 2002-06-18 2004-01-02 Black & Decker Inc. Mécanisme de serrage et ensemble d'embrayage pour outil de coupe rotatif
WO2006024058A1 (fr) * 2004-09-03 2006-03-09 Panhans Maschinenbau Gmbh Installation d'usinage, en particulier installation de delignage et de decoupage de panneaux

Also Published As

Publication number Publication date
ITBO20060674A1 (it) 2008-03-30

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