EP0627285B1 - Vorrichtung zum Querschneiden von Holzfurnier - Google Patents

Vorrichtung zum Querschneiden von Holzfurnier Download PDF

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Publication number
EP0627285B1
EP0627285B1 EP94201351A EP94201351A EP0627285B1 EP 0627285 B1 EP0627285 B1 EP 0627285B1 EP 94201351 A EP94201351 A EP 94201351A EP 94201351 A EP94201351 A EP 94201351A EP 0627285 B1 EP0627285 B1 EP 0627285B1
Authority
EP
European Patent Office
Prior art keywords
blade
accordance
strip
blade sections
sections
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
EP94201351A
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English (en)
French (fr)
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EP0627285A2 (de
EP0627285A3 (de
Inventor
Lorenzo Cremona
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.)
Angelo Cremona e Figlio SpA
Original Assignee
Angelo Cremona e Figlio SpA
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 Angelo Cremona e Figlio SpA filed Critical Angelo Cremona e Figlio SpA
Publication of EP0627285A2 publication Critical patent/EP0627285A2/de
Publication of EP0627285A3 publication Critical patent/EP0627285A3/de
Application granted granted Critical
Publication of EP0627285B1 publication Critical patent/EP0627285B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D11/00—Combinations of several similar cutting apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
    • B26D1/34—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut
    • B26D1/40—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a rotary member
    • B26D1/405—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a rotary member for thin material, e.g. for sheets, strips or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G1/00—Machines or devices for removing knots or other irregularities or for filling-up holes
    • 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
    • B27L5/00—Manufacture of veneer ; Preparatory processing therefor
    • B27L5/08—Severing sheets or segments from veneer strips; Shearing devices therefor; Making veneer blanks, e.g. trimming to size

Definitions

  • CH-354 890 discloses a transverse cutting apparatus wherein cutting means comprises two side-by-side transverse blades. If the sheet is wide, the two blades are operated simultaneously, whereas if the sheet is narrower than one blade, only one blade is operated.
  • EP-A-O 500 161 is a machine for carrying out transverse cuts selectively on the entire width or on a portion of the veneer width in connection with longitudinal cuts, so as to enable the scrap of defective parts with minimal wood waste.
  • the general purpose of the present invention is to provide a cutting device for carrying out accurate transverse cuts.
  • FIG. 1 shows a cutting device 15 comprising a rotating blade consisting of two blade sections 21 and 22 arranged side by side to rotate coaxially between bucking rollers 23 and 24 by motors 25 and 26 respectively having position sensors.
  • Axial sliding is controlled by a double action piston 28 driven hydraulically through the ducts 40, 54 by a hydraulic control unit 29 connected to electronic processing and control means 19.
  • an axially sliding clutch 30 having a spring 31, e.g. the Melville type, which usually holds it in engagement of the two blades (blades brought near).
  • a spring 32 e.g. the Melville type, which usually holds it in engagement of the two blades (blades brought near).
  • Another spring 32 weaker than the spring 31, placed in the piston 28, maintains axial tension of the blades.
  • FIG. 2 shows schematically an example of an embodiment of the axial clutch 30.
  • integral with the blade 21 is a supporting and containing structure 46 in which a shaft 47 integral with the blade 22 is inserted in a sliding manner. Reciprocal rotation between the structure 46 and the shaft 47 is permitted by bearings 48 and 49.
  • the spring 31 pushes between an element 50 integral with the shaft 47 and an element 51 rotating with the shaft 47, sliding coaxially thereto and butted axially on the structure 46 with an interposed bearing 52.
  • the bearing 48 is of known type permitting mutual axial translation of the parts between which it is placed.
  • the various parts of the station are controlled and commanded to operate by electronic processing and control means 19, e.g. provided by programmed logics such as a microprocessor of the known art programmed in accordance with the description given below and optionally interconnected to a personal computer or the like.
  • electronic processing and control means 19 e.g. provided by programmed logics such as a microprocessor of the known art programmed in accordance with the description given below and optionally interconnected to a personal computer or the like.
  • the control device 19 synchronises the movements of the blades 21, 22 and commands coupling or not of the two blades of the transverse cutter depending on requirements.
  • the device 19 commands the control unit 29 to supply fluid to the piston through the duct 54.
  • the piston moves the blade 22 axially away from the blade 21, thus disengaging the clutch 30 and permitting the two motors 25 and 26 to rotate the respective blade independently with independent speeds.
  • control device 19 To engage again the blades so that they behave substantially as a single blade the control device 19 first resynchronizes them electronically, putting the motors in step (by means of the signals emitted by their position sensors), so that the blades are rearranged as much as possible with parallel faces, and then commands the control unit 29 to supply the piston 28 with a fluid counterpressure through the duct 40, thus reconnecting the mechanical clutch 30 between the blades.
  • the device In use the device is usually utilized in a station for combined transverse and longitudinal cuts, as disclosed, for example, in the above mentioned application EP-A-500 161, so as to receive between blades and bucking roller an unbroken strip of wood veneer separated or not longitudinally by a known longitudinal cutting blade.
  • the device is controlled for cutting transversely a half-strip or the entire strip (depending on what is the case) in connection with longitudinal cuts, so as to form wood sheets having a size suitable for minimizing wood scrap.
  • Figure 3 shows schematically a different embodiment 15' of the cutting device according to the present invention.
  • the cutter 15' comprises a shaft 56 on which are supported independently in a rotating manner two blade holder units (57, 58) or sections, each having a plurality 59, 60 of equally spaced radial blades (as may be seen well in FIG. 4).
  • bucking roller 61 Parallel to the shaft 56 is a bucking roller 61 on which slides the veneer 12.
  • Each blade holder 57 and 58 is rotated by a motor 62 or 63 through a kinematic transmission, e.g. with a chain, 64 and 65.
  • the motors are mechanically engaged together through an electromechanical joint of the known art, e.g the electromagnetic type controlled by the device 19.
  • the cutting station In use the cutting station operates as described above. When cuts are to be made on half strips the joint 66 is disengaged and the motors drive the blade holders independently. When a full transverse cut is required, the device 19 first synchronizes the blades by controlling the motors 62, 63 through position sensors, similarly to the motors of the cutter 15, and then operates the clutch 66 so that the blades of the two blade holders rotate integrally and with mated cutting edges.
  • FIG. 4 shows three blades for each blade unit, as a compromise between cutting speed and manufacturing cost it is also possible to use cutters with a different number of blades.
  • connection means between the blades of the cutters 15 or 15' can be provided differently than described schematically or could even be replaced by only electronic synchronization of the rotation of the respective motors.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Wood Veneers (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)

Claims (10)

  1. Vorrichtung (15, 15') zum Querschneiden eines Holzfurnierstreifens mittels eines Messers, das sich um eine Achse dreht, um quer in Kontakt mit dem Streifen zu kommen, wobei das Messer aus zwei Messerabschnitten (21, 22, 57, 58) besteht, die nebeneinander angeordnet sind, um sich koaxial` und unabhängig, rotierend, steuerbar um die Achse zu drehen.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die beiden Messerabschnitte (21, 22; 57, 58) Betriebseinrichtungen aufweisen, die Synchronisationseinrichtungen (19, 30, 66) aufweisen, um gemeinsam auf Befehl einen durchgehenden Schnitt längs der gesamten Breite des Streifens durchzuführen.
  3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Messerachse sich in einer mittleren Position befindet, und das Messer zwei gegenüberliegende Kanten aufweist, um sich zwischen Schneidwalzen zu drehen, wobei der zu schneidende Streifen zwischen einer Schneidwalze und dem Messer durchgeht.
  4. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Synchronisationseinrichtungen eine mechanische Kupplung (30) zum, gegenseitigen Kuppeln der Messerabschnitte aufweisen.
  5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die mechanische Kupplung (30) Zähne (53, 55) auf den gegenüberliegenden Enden der beiden Messerabschnitte aufweist, um auf eine gegenseitige axiale Annäherung der Messerabschnitte hin gegenseitig ineinander einzugreifen.
  6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die Messerabschnitte durch elastische Einrichtungen (31) in gegenseitiger Nähe gehalten werden, wobei Auskuppeleinrichtungen (28) selektiv einen axialen Rückzug der Messerabschnitte gegen die Wirkung der elastischen Einrichtungen (31) bewirken.
  7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß die Auskuppeleinrichtungen einen Hydraulikkolben (28) zur Bewegung gegen die Wirkung einer Feder (32) aufweisen, die an einem Ende eines der beiden Messerabschnitte (21, 22) angeordnet ist.
  8. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Messerabschnitte mehrere Messer (59, 60) aufweisen, die radial um eine longitudinal rotierende Welle (56) angeordnet sind, um sich aufeinanderfolgend nahe zu einer Schneidwalze (61) zu bewegen, wobei der zu schneidende Streifen zwischen dem Messer und der Walze durchgeht.
  9. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Synchronisationseinrichtungen eine auskuppelbare mechanische Kupplung (66) zwischen den Wellen der Umdrehungsmotoren (62, 63) jedes Messerabschnitts aufweisen.
  10. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, daß die auskuppelbare mechanische Kupplung eine elektromechanische Kupplung ist.
EP94201351A 1991-02-12 1992-02-10 Vorrichtung zum Querschneiden von Holzfurnier Expired - Lifetime EP0627285B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ITMI910354A IT1249595B (it) 1991-02-12 1991-02-12 Stazione di taglio in fogli per sfogliati di legno
ITMI910354 1991-02-12
EP92200356A EP0500161B1 (de) 1991-02-12 1992-02-10 Bogenschneidmaschine für geschältes Holzfurnier

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP92200356.1 Division 1992-02-10

Publications (3)

Publication Number Publication Date
EP0627285A2 EP0627285A2 (de) 1994-12-07
EP0627285A3 EP0627285A3 (de) 1995-09-06
EP0627285B1 true EP0627285B1 (de) 1998-12-09

Family

ID=11358533

Family Applications (2)

Application Number Title Priority Date Filing Date
EP94201351A Expired - Lifetime EP0627285B1 (de) 1991-02-12 1992-02-10 Vorrichtung zum Querschneiden von Holzfurnier
EP92200356A Expired - Lifetime EP0500161B1 (de) 1991-02-12 1992-02-10 Bogenschneidmaschine für geschältes Holzfurnier

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP92200356A Expired - Lifetime EP0500161B1 (de) 1991-02-12 1992-02-10 Bogenschneidmaschine für geschältes Holzfurnier

Country Status (5)

Country Link
EP (2) EP0627285B1 (de)
AT (2) ATE152390T1 (de)
DE (2) DE69219381T2 (de)
ES (2) ES2127881T3 (de)
IT (1) IT1249595B (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5868187A (en) 1995-05-31 1999-02-09 Capital Machine Company, Inc. Method and apparatus for retaining a flitch for cutting
US5562137A (en) * 1995-05-31 1996-10-08 Capital Machine Company, Inc. Method and apparatus for retaining a flitch for cutting
US5694995A (en) * 1995-05-31 1997-12-09 Capital Machine Company, Inc. Method and apparatus for preparing a flitch for cutting
US5590700A (en) * 1995-11-15 1997-01-07 Capital Machine Co., Inc. Vacuum flitch table with self-cleaning vacuum valve
US5680887A (en) * 1995-11-30 1997-10-28 Capital Machine Co., Inc. Veneer slicer with timing belt
US5865232A (en) * 1996-03-08 1999-02-02 Miller Veeners, Inc. Method and apparatus for cutting veneer sheets from a tapered flitch
US5960104A (en) * 1996-08-16 1999-09-28 Virginia Polytechnic & State University Defect detection system for lumber
WO2005102633A2 (en) 2004-04-15 2005-11-03 Miller Veneers, Inc. Method and apparatus for cutting veneer sheets from a flitch
US9050735B2 (en) 2006-06-20 2015-06-09 Danzer Services Schweiz Ag Automatic clipping line
CA2716563A1 (en) * 2008-03-11 2009-09-17 Padana Ag Crossclipping and bundling system and method for veneer packets
CN102350713B (zh) * 2011-08-01 2014-04-02 济南德佳机器控股有限公司 物料优选加工设备及方法

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2616501A (en) * 1947-11-12 1952-11-04 Willis E Smith Combined veneer clipper and trimmer
GB692783A (en) * 1950-02-03 1953-06-17 Marvin Hart Improvements in the production of wood veneers
US2928305A (en) * 1957-01-14 1960-03-15 Prentice Machine Works Inc Veneer clipper for cutting measured lengths with means responsive to feed of work to regulate the cutting cycle
CH353890A (de) * 1957-09-05 1961-04-30 Mueller Ag Furnierschere
US2942635A (en) * 1959-01-16 1960-06-28 Roy C Horne Method of reconstituting lumber and product thereof
US3165961A (en) * 1962-11-30 1965-01-19 Weyerhaeuser Co Apparatus for automatically cutting defective veneer sheets
CH467658A (it) * 1968-02-02 1969-01-31 Saffa Spa Taglierina per assicelle
US3808925A (en) * 1973-03-12 1974-05-07 Durand Machine Co Ltd Rotary veneer clipper
JPS6246601A (ja) * 1985-08-26 1987-02-28 橋本電機工業株式会社 細幅長尺単板の連続自動処理装置
IT206331Z2 (it) * 1985-09-25 1987-08-10 Cremona Angelo & Figlio Taglierina rotante perfezionata per materiali in foglia, in particolare sfogliati di legno.
IT1228658B (it) * 1989-02-10 1991-06-27 Cremona Angelo & Figlio Dispositivo per la sezionatura ed l'accatastamento di rivette in legno.
JP2706332B2 (ja) * 1989-11-10 1998-01-28 三菱重工業株式会社 回転ドラム式切断装置
FI86818C (fi) * 1990-12-28 1992-10-26 Raute Oy Avskaerare
FI87431C (fi) * 1991-06-26 1993-01-11 Raute Oy Anordning foer kapning av faner

Also Published As

Publication number Publication date
EP0500161B1 (de) 1997-05-02
DE69219381D1 (de) 1997-06-05
EP0627285A2 (de) 1994-12-07
DE69227842D1 (de) 1999-01-21
DE69219381T2 (de) 1997-11-20
ATE174251T1 (de) 1998-12-15
EP0627285A3 (de) 1995-09-06
ES2127881T3 (es) 1999-05-01
ITMI910354A1 (it) 1992-08-12
EP0500161A3 (en) 1993-02-24
ES2101794T3 (es) 1997-07-16
EP0500161A2 (de) 1992-08-26
DE69227842T2 (de) 1999-04-29
ATE152390T1 (de) 1997-05-15
ITMI910354A0 (it) 1991-02-12
IT1249595B (it) 1995-03-09

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