EP0486770A1 - Procédé et dispositif pour trancher des feuilles de bois d'une poutre - Google Patents

Procédé et dispositif pour trancher des feuilles de bois d'une poutre Download PDF

Info

Publication number: EP0486770A1
Authority: EP; European Patent Office
Prior art keywords: lamella; timber; drive belt; lamellae; support
Prior art date: 1990-10-20
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

EP91114048A

Other languages

German (de)

English (en)

Other versions

EP0486770B1 (fr

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.)

Gebrueder Linck Maschinenfabrik Gatterlinck GmbH and Co KG

Original Assignee

Gebrueder Linck Maschinenfabrik Gatterlinck GmbH and Co KG

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.)

1990-10-20

Filing date

1991-08-22

Publication date

1992-05-27

1991-08-22 Application filed by Gebrueder Linck Maschinenfabrik Gatterlinck GmbH and Co KG filed Critical Gebrueder Linck Maschinenfabrik Gatterlinck GmbH and Co KG

1992-05-27 Publication of EP0486770A1 publication Critical patent/EP0486770A1/fr

1995-01-11 Application granted granted Critical

1995-01-11 Publication of EP0486770B1 publication Critical patent/EP0486770B1/fr

2011-08-22 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Images

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
- B27L5/00—Manufacture of veneer ; Preparatory processing therefor
- B27L5/06—Cutting strips from a stationarily- held trunk or piece by a rocking knife carrier, or from rocking trunk or piece by a stationarily-held knife carrier; Veneer- cutting machines
- 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
- B27B25/00—Feeding devices for timber in saw mills or sawing machines; Feeding devices for trees
- B27B25/04—Feeding devices for timber in saw mills or sawing machines; Feeding devices for trees with feed chains or belts

Definitions

the invention relates to a method for cutting wood lamellae from a timber without cutting, the timber being conveyed in several successive revolutions along a knife, each of which cuts a wood lamella until only a leftover leftover remains from the timber, an endlessly rotating drive belt counteracting the timber the knife presses.
non-cutting technology Such methods, which are referred to as “non-cutting technology", are known.
One of the advantages of this method is that there is no material loss in the form of sawdust.
the prepared, ie all-round processed squared timber is broken down into the wooden slats in several successive runs.
wood lamella is understood to mean any flat, elongated wood product up to board thickness. The only waste or material loss that arises with this working process is the remaining lamella after the last wooden lamella has been cut off.
the thickness of this remaining lamella and thus the size of the material loss is determined by the fact that the endlessly rotating drive belt, which presses the squared timber against the knife, can only be advanced against the knife to such an extent that it does not come into contact with the knife. otherwise it would be destroyed.
the devices for cutting wood lamellae from a squared timber without cutting are usually designed in such a way that the squared timber is pressed from above against the knife below.
the lower run of the endless drive belt still has a certain sag even at the highest possible belt tension, which also depends on the belt length and the material properties, in particular the elasticity of the drive belt.
the "remaining lamella” is the rest of the squared timber remaining after the last wooden lamella has been cut off. This remaining lamella must still be so thick that the drive belt does not touch the knife due to its sag after passing through the remaining lamella, a considerable additional safety distance must be maintained because the size of the sag of the drive belt cannot be determined with sufficient reliability and after a long period of operation increases.
the object of the invention is to provide a method of the type mentioned at the outset such that the squared timber can be broken down into wooden lamellae as completely as possible, ie with as little material loss as possible. This means that the remaining lamella is thinner than the wooden lamellae produced.
This object is achieved in that before the separation of at least the wooden lamella, a supporting lamella is inserted between the drive belt and the remaining lamella of the squared timber and is conveyed together with the latter.
the distance to be maintained between the drive belt and the knife when the last wooden lamella is severed can be selected to be so large that it is reliably prevented that the drive belt touches and damages the knife.
the thickness of the support lamella is chosen so that it is certainly greater than the greatest band sag that occurs. Then the squared timber can be processed except for any thin lamella. Even if the remaining lamella is very thin, the drive belt remains so far away from the knife during the last pass that it does not come into contact with the knife when the belt sag follows.
the support plate preferably a plurality of support plates, is or are conveyed from the outlet of the drive belt to its inlet. This allows working with a relatively small stock of support slats.
the support plates are temporarily stored at one point in the circuit.
This intermediate storage forms a buffer, which ensures that a sufficient number Support slats are kept ready for use at the belt inlet.
the invention also relates to an advantageous device for carrying out the method.
the device according to the invention is based on a device with an endlessly circulating drive belt that transports the squared timber in the longitudinal direction and presses the squared timber against a knife that separates the wooden lamella, and with a conveyor device that conveys the squared timber in the circuit to the inlet and the drive belt.
the device according to the invention is characterized in that a feed device is arranged in front of the inlet of the drive belt, which places a support lamella on the square timber, and in that a removal device is arranged behind the outlet of the drive belt, which removes the support lamella from the remaining lamella of the square timber, and in that a transport device for the support lamellae, the removal device connects the application device.
This device increases the construction effort only insignificantly, but enables a substantially increased timber yield by reducing the material losses due to the remaining lamellae.
the device or system shown in the drawing is used to separate a wooden lamella 2 from a square timber 1 machined on all sides in each pass.
the squared timber 1 is conveyed up on a longitudinal conveyor, for example a chain bed or roller bed 3, and processed in a cutting station 4.
an endlessly rotating drive belt 5 is accommodated in a height-adjustable frame 7 guided on the machine frame 6 and is driven by a motor 8.
the lower run 5a of the drive belt 5 is supported by the frame 7
Pressure rollers 9 pressed against the top of the square timber 1 runs over a roller bed 10 in the machine frame 6 of the cutting station 4 and is pressed by the drive belt 5 against a knife 11 which separates the wooden lamella 2 from the bottom side of the square timber 1.
the remaining squared timber or the remaining lamella 1a remaining after the last wooden lamella 2 has been cut off is conveyed away on a roller bed 3a adjoining the cutting station 4.
the squared timber 1 is conveyed again in the circuit from the outlet of the cutting station 4 to the separation of further wooden lamellae 2.
the rest of the squared timber 1 is referred to as the remaining lamella 1, which is too thin to separate a wooden lamella 2 from it.
This remaining lamella 1a is conveyed away after leaving the cutting station 4.
an application device 12 is arranged at the inlet of the drive belt 5, the details of which are shown in FIG. 5.
a support lamella 17 is laterally displaced from a stack 16 by a slide 15 actuated by a pressure medium cylinder 14 from a stack 16 and placed on the rest of the squared timber 1 which is on the roller conveyor 3 is located.
This placement of a support lamella 17 only takes place when the rest of the squared timber 1 has become so thin after the separation of several wooden lamellae 2 that the drive belt 5 would have to be lowered so deep that the lower belt strand 5a after the wood has passed through with the knife 11 in Can come into contact, so that it would be damaged.
the support lamella 17 placed on the square timber 1 before the entry into the cutting station 4 increases the distance between the lower belt strand, which is sagging by a certain amount 5a and the knife 11 so that the band strand 5a cannot come into contact with the knife 11.
a driven transport roller 18 (FIG. 1) takes over the transport in the longitudinal direction of the squared timber 1 or the remaining lamella 17 placed thereon.
the remaining lamella 1a of the square timber 1 remaining after the last wooden lamella 2 has been cut off, together with the supporting lamella 17 located thereon, is conveyed further by a driven transport roller 19 on the roller bed 3a and reaches a removal device 20.
FIG. 7 shows, in a representation similar to FIG. 5, another possible embodiment of an intermediate storage device for a plurality of support lamellae 17 on the application device 12.
the intermediate storage device is formed here by a flat conveyor 29, for example a belt conveyor, which conveys the support lamellae 17 in the transverse direction.
the incoming support slats 17 are transferred from the longitudinal conveyor 24 to the cross conveyor 29 by means of a slide 30 and collected there.
a two-armed lever 31 which is controlled in such a way that it is held alternately in front of the side edge of the foremost support lamella 17 or in a recess 17a on the upper side of the next support lamella 17 with holding lugs 31a and 31b attached at both ends thereof intervenes. Due to the cyclical control of this two-armed lever 31, a support lamella 17 is only released for application to the square timber 1 if it was determined in the central control system via a measuring device (not shown) that the rest of the square timber 1 is so thin that the Placing a support plate 17 is required.
the squared timber 1 conveyed out of the cutting station 4 runs in the longitudinal direction via the removal device 20 to a cross conveyor 32 and arrives from there via a longitudinal conveyor 33 and one further (not shown) cross conveyor again to the inlet of the cutting station.
a support lamella 17 has been placed, which is at least before the last wooden lamella 2 has been cut off, but possibly already - depending on the thickness of the wooden slats - when the cut-off preceding wooden lamellae
the support lamella 17 is removed in the removal device 20 in the manner already described and is conveyed again in the circuit to the inlet of the cutting station 4. If the remaining lamella 1a remaining after the last wooden lamella 2 has been cut off is so thin that no further wooden lamella 2 can be separated therefrom, then this remaining lamella 1a is conveyed away without again coming to the cutting station 4.
FIG. 6 a modified version of the system is shown in FIG. 6.
the support lamella 17 is lifted from the underlying timber 1 or the remaining lamella 1a and conveyed in the longitudinal direction up to a cross conveyor 34.
the support plates 17 used here have longitudinal grooves on their longitudinal edges, in which guide wheels 35 engage from both sides.
the guide wheels 35 raise the support plate 17 and promote it in the longitudinal direction.
the circulation of the support lamellae 17 takes place, as already described, via the cross conveyor 34 and the longitudinal conveyor 24 for the entry of the cutting station.
the squared timber 1 or the remaining lamella 1a is taken over by the cross conveyor 32 and transferred to the longitudinal conveyor 33.
the intermediate storage device 13 or 29 is shown on the application device 12.
the interim storage facility can also on the Removal device 20 or in the region of the transport devices which support the support lamella 17 in the circuit.
the support lamellae 17 consist of wear-resistant material, for example of metal, plastic, hardwood, wood composite material or laminated material. Their wear resistance should be so high that they have a sufficiently long service life. However, the material should be so soft that it does not damage the knife 11 when the support plate 17 comes into contact with the knife 11.

Landscapes

Life Sciences & Earth Sciences (AREA)
Engineering & Computer Science (AREA)
Wood Science & Technology (AREA)
Forests & Forestry (AREA)
Manufacturing & Machinery (AREA)
Mechanical Engineering (AREA)
Manufacture Of Wood Veneers (AREA)
Laser Beam Processing (AREA)
Processing Of Solid Wastes (AREA)

EP91114048A 1990-10-20 1991-08-22 Procédé et dispositif pour trancher des feuilles de bois d'une poutre Expired - Lifetime EP0486770B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE4033471A DE4033471A1 (de)	1990-10-20	1990-10-20	Verfahren und vorrichtung zum spanlosen abtrennen von holzlamellen von einem kantholz
DE4033471		1990-10-20

Publications (2)

Publication Number	Publication Date
EP0486770A1 true EP0486770A1 (fr)	1992-05-27
EP0486770B1 EP0486770B1 (fr)	1995-01-11

Family

ID=6416758

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP91114048A Expired - Lifetime EP0486770B1 (fr)	1990-10-20	1991-08-22	Procédé et dispositif pour trancher des feuilles de bois d'une poutre

Country Status (3)

Country	Link
EP (1)	EP0486770B1 (fr)
AT (1)	ATE116895T1 (fr)
DE (2)	DE4033471A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO1993013921A1 (fr) *	1992-01-20	1993-07-22	Gebrüder Linck Maschinenfabrik 'gatterlinck' Gmbh & Co. Kg	Dispositif pour la separation de lamelles de bois dans un bois equarri sans enlevement de copeaux

Citations (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3295571A (en) *	1963-10-28	1967-01-03	Bork Per	Veneer production
US3627006A (en) *	1970-03-02	1971-12-14	Polymer Chemical Co	Method and means for producing wood veneer
DE3247551A1 (de) *	1982-12-22	1984-07-05	Bison-Werke Bähre & Greten GmbH & Co KG, 3257 Springe	Anlage zur herstellung von span-, faser- oder dergleichen platten
EP0277591A2 (fr) *	1987-01-31	1988-08-10	Gebrüder Linck, Maschinenfabrik "Gatterlinck" GmbH & Co.KG	Appareil de fabrication de planches minces
EP0322646A1 (fr) *	1987-12-28	1989-07-05	Michel Martin	Trancheuse longitudinale à bois et installation de tranchage
US4934199A (en) *	1988-03-25	1990-06-19	Boeing Company	Method and apparatus for preparing specimens for destructive testing of graphite epoxy composite material

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2222694A1 (de) *	1971-04-21	1973-11-22	Marunaka Tekkosho Inc	Holzschneidemaschine

1990
- 1990-10-20 DE DE4033471A patent/DE4033471A1/de active Granted
1991
- 1991-08-22 AT AT91114048T patent/ATE116895T1/de active
- 1991-08-22 DE DE59104243T patent/DE59104243D1/de not_active Expired - Fee Related
- 1991-08-22 EP EP91114048A patent/EP0486770B1/fr not_active Expired - Lifetime

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3295571A (en) *	1963-10-28	1967-01-03	Bork Per	Veneer production
US3627006A (en) *	1970-03-02	1971-12-14	Polymer Chemical Co	Method and means for producing wood veneer
DE3247551A1 (de) *	1982-12-22	1984-07-05	Bison-Werke Bähre & Greten GmbH & Co KG, 3257 Springe	Anlage zur herstellung von span-, faser- oder dergleichen platten
EP0277591A2 (fr) *	1987-01-31	1988-08-10	Gebrüder Linck, Maschinenfabrik "Gatterlinck" GmbH & Co.KG	Appareil de fabrication de planches minces
EP0322646A1 (fr) *	1987-12-28	1989-07-05	Michel Martin	Trancheuse longitudinale à bois et installation de tranchage
US4934199A (en) *	1988-03-25	1990-06-19	Boeing Company	Method and apparatus for preparing specimens for destructive testing of graphite epoxy composite material

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO1993013921A1 (fr) *	1992-01-20	1993-07-22	Gebrüder Linck Maschinenfabrik 'gatterlinck' Gmbh & Co. Kg	Dispositif pour la separation de lamelles de bois dans un bois equarri sans enlevement de copeaux

Also Published As

Publication number	Publication date
DE4033471C2 (fr)	1992-08-20
DE4033471A1 (de)	1992-04-23
EP0486770B1 (fr)	1995-01-11
ATE116895T1 (de)	1995-01-15
DE59104243D1 (de)	1995-02-23

Publication	Publication Date	Title
DE2648269C2 (de)	1983-08-04	Verfahren und Vorrichtung zum Zerbrechen von Flachglasscheiben in kleine Stückchen oder Scherben
EP0453935B1 (fr)	1994-08-24	Procédé et dispositif pour transporter des matériaux en feuilles superposées d'une table de réception vers une table d'alimentation dans une machine de coupe
DE102007006754A1 (de)	2007-08-23	Furnierschneidvorrichtung
DE3716666C2 (de)	1996-03-07	Plattenaufteilanlage mit einer Längssäge und einer Quersäge
DE1611617A1 (de)	1971-01-14	Vorrichtung zum Abstreifen von Stanzresten
DE2811706A1 (de)	1978-09-21	Verfahren und vorrichtung zum abziehen eines zusammenhaengenden steges vom rand eines koerpers
DE3028191A1 (de)	1981-04-02	Buntaufteilanlage fuer plattenfoermige werkstuecke
DE69706599T2 (de)	2002-07-11	Eine Schleifmaschine, insbesondere für Holzpaneele
EP0486770B1 (fr)	1995-01-11	Procédé et dispositif pour trancher des feuilles de bois d'une poutre
DE2518359A1 (de)	1976-05-26	Holzbearbeitungs-maschine
DE3812005C2 (fr)	1990-06-28
DE2501012A1 (de)	1976-07-15	Verfahren und vorrichtung zum aufeinandersetzen von stapeln
DE2505552A1 (de)	1976-08-26	Verfahren und vorrichtung zum schneiden eines furnierblattes
DE4422194C1 (de)	1996-06-05	Schneidverfahren für gestapeltes, blättriges Gut
DE2912255C2 (de)	1983-03-24	Vorrichtung zum automatischen Aufteilen einer Platte
EP0751905B1 (fr)	1999-12-22	Procede et dispositif pour le travail en paquets de feuilles coincidentes d'un materiau plat
DE20306776U1 (de)	2003-09-04	Einrichtung zum Querschneiden von Blech- oder Kunststoffbahnen
DE4422193C1 (de)	1996-03-21	Schneidverfahren für gestapeltes, blättriges Gut
DE3311541C1 (de)	1984-06-07	Vorrichtung zum Kerben eines Tonstrangstueckes quer zu dessen Laengsrichtung
EP0650810B1 (fr)	1997-02-26	Dispositif pour trancher du bois équarri en feuilles
DE3417097C2 (fr)	1993-02-11
DE3914320C2 (de)	1994-04-14	Ablängvorrichtung
DE4121517C1 (fr)	1992-08-27
DE2615733A1 (de)	1977-10-27	Vorrichtung zum vereinzeln von schnittholzstapeln
DE102009054342A1 (de)	2011-05-26	Verfahren zum Aufschneiden eines blockförmigen Substrats und Vorrichtung zur Durchführung des Verfahrens

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Date	Code	Title	Description
1992-04-10	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
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2005-08-22	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050822

EP0486770A1 - Procédé et dispositif pour trancher des feuilles de bois d'une poutre - Google Patents

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Definitions

Landscapes

Applications Claiming Priority (2)

Publications (2)

Family

ID=6416758

Family Applications (1)

Country Status (3)

Cited By (1)

Citations (6)

Family Cites Families (1)

Patent Citations (6)

Cited By (1)

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