WO1993013921A1 - Dispositif pour la separation de lamelles de bois dans un bois equarri sans enlevement de copeaux - Google Patents

Dispositif pour la separation de lamelles de bois dans un bois equarri sans enlevement de copeaux Download PDF

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Publication number
WO1993013921A1
WO1993013921A1 PCT/EP1993/000068 EP9300068W WO9313921A1 WO 1993013921 A1 WO1993013921 A1 WO 1993013921A1 EP 9300068 W EP9300068 W EP 9300068W WO 9313921 A1 WO9313921 A1 WO 9313921A1
Authority
WO
WIPO (PCT)
Prior art keywords
belt
feed belt
band
support
timber
Prior art date
Application number
PCT/EP1993/000068
Other languages
German (de)
English (en)
Inventor
Siegmar Gönner
Heinz-Hubert Braun
Original Assignee
Gebrüder Linck Maschinenfabrik 'gatterlinck' Gmbh & 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.)
Filing date
Publication date
Application filed by Gebrüder Linck Maschinenfabrik 'gatterlinck' Gmbh & Co. Kg filed Critical Gebrüder Linck Maschinenfabrik 'gatterlinck' Gmbh & Co. Kg
Publication of WO1993013921A1 publication Critical patent/WO1993013921A1/fr

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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
    • 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
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/002—Means to press a workpiece against a guide
    • 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 device for cutting wood lamellas from a timber without cutting, with a feed belt that transports the timber in its longitudinal direction, which is driven in a height-adjustable belt frame via deflection rollers and is endlessly supported, has belt support elements on the back of the belt and the timber in several passes against presses a knife that separates the wooden lamella and moves it along it.
  • non-cutting cutting technique 11 The non-cutting separation of wooden lamellae from a square timber is also referred to as "non-cutting cutting technique 11.
  • a major advantage of this method is that there is no loss of material in the form of sawdust.
  • the square timber processed on all sides is broken down into the wooden lamellae in several successive passes. Under”
  • wood lamella 11 is understood to mean any flat, elongated wood product up to the board thickness.
  • the feed belt is also pressed in the direction of the knife by the belt support elements, for example support rollers, acting on the back of the belt.
  • the adjustment of the belt frame must be limited so that there is still a sufficient safety distance between the feed belt and the knife under all operating conditions. This safety distance requires a comparatively thick residual lamella and thus a comparatively high amount of wood waste, which partially nullifies the advantage of lossless separation.
  • the object of the invention is therefore to design a device of the type mentioned at the outset so that the squared timber can be processed so completely that the remaining lamella is thinner than the wood lamellae produced.
  • the feed belt is stiffened in its transverse direction and has laterally projecting guide elements, and that guide rails are arranged at least in the area of the knife on both sides of the feed belt, which limit the displacement of the lateral guide elements of the feed belt towards the knife.
  • the lateral guide rails on which the lateral guide elements of the feed belt are supported, limit the displacement of the feed belt towards the knife. This reliably prevents the feed belt from coming into contact with the knife and can be destroyed.
  • the stiffening of the feed belt in the transverse direction prevents the feed belt from being able to approach the knife too much in spite of the lateral support in its central region. Since it is no longer necessary to maintain a relatively large safety distance from the knife, which is determined by the possible belt sag, the squared timber can be processed except for a remaining lamella, the thickness of which is less than that of the wooden lamellae produced. This ensures the greatest possible use of wood.
  • the guide rails arranged on both sides of the feed belt are firmly connected to the height-adjustable belt frame.
  • the guide rails are fed together with the belt frame after each pass of the squared timber, so that not only during the last pass of the squared timber, i.e. with the greatest possible approach to the knife, but the displacement of the feed belt in the direction of the knife is already limited with each previous pass.
  • the belt support elements are preferably movably supported on the belt guide frame by means of pressure medium cylinders, so that the feed belt is pressed against the squared timber with a uniform, predetermined pressure distribution.
  • the feed belt is a plate belt which consists of hingedly connected, transversely rigid band plates, and that laterally projecting edges of the band plates form the guide elements which interact with the guide rails.
  • the belt plates have sufficient transverse rigidity to prevent any sagging of the feed belt in the middle of the belt relative to the two side edges.
  • the guide elements supported on the guide rails are formed in a structurally very simple manner by the plate edges themselves.
  • the feed belt consists of flexible material into which guer-extending stiffening rods are inserted, the rod ends of which protrude from the feed belt form the guide elements.
  • this design has the advantage of easier and quieter belt travel, because only a few mechanically moving parts are used.
  • the inserted stiffening rods for example vulcanized into a rubber band, give the feed belt the desired transverse rigidity on the one hand and, on the other hand, form with both ends the guide elements which are supported on the guide rails arranged on both sides in order to limit the approach of the feed belt to the knife in the manner described.
  • FIG. 1 is a simplified side view of a device for cutting wood slats from a square timber without cutting
  • FIG. 5 shows a modified embodiment of the device according to FIG. 1 in a section similar to FIG. 2,
  • FIG. 8 shows a further modified embodiment of the device according to FIG. 1 in a section similar to FIGS. 2 and 5,
  • FIG. 9 shows a modified embodiment in a partial section corresponding to FIG. 8, but only the edge of the feed belt and the guide rail are shown,
  • Fig. 10 is a partial view in the direction of arrow X in Fig. IX and
  • FIG. 11 shows a modified embodiment, also in a partial view in the direction of arrow X in FIG. 9.
  • the devices shown in the drawing are used to separate a wooden lamella 2 from a square timber 1 machined on all sides in several passes.
  • the squared timber 1 which is conveyed up by a longitudinal conveyor (not shown), is moved along a processing table 3, which is arranged fixed to the frame in a machine frame 4.
  • a knife 5 is arranged in the processing table 3 and separates the wooden lamella 2 from the square timber 1 without cutting.
  • the feed of the squared timber 1 is carried out by a feed belt 6, which is guided in a belt frame 7 over deflection rollers 8 endlessly.
  • One of the deflection rollers 8 is driven by a drive motor 9 mounted on the belt frame 7.
  • the belt frame 7 is guided in height-adjustable manner on the machine frame 4 on guide columns 10.
  • the squared timber 1 is moved through the feed belt 6 in several passes along the knife 5, a wooden lamella 2 being cut off until a remaining lamella remains.
  • the feed belt 6 is a plate belt 11, which consists of hinged band plates 12, which on their surface facing the square timber 1 carry an elastic pad 13, for example made of rubber or elastic plastic.
  • the band plates 12 are each connected to chain links of a plurality of parallel link chains 14 or form chain links of these link chains 14 themselves. Further chain links are arranged between the individual link plates 12 for articulated connection.
  • support sprockets 15 are provided in the area of the lower belt run on the back of the belt as belt support elements, which engage and support the link chains 14.
  • the support sprockets 15 are each mounted on a rocker 16. Each rocker 16 is pivotally mounted on the belt frame 7 via a hinge pin 17 and a support 18.
  • each rocker 16 is movably supported on the belt frame 7 by means of two pressure medium cylinders 19.
  • the pressure medium cylinders 19 ensure that the support sprockets 15 and thus also the band plates 12 are pressed against the square timber 1 with a predetermined force.
  • support rollers that act on the belt plates 12 can also be used as belt support elements.
  • the guide rails 21 are fixedly connected to the vertically movable belt frame 7 by means of supports 21a and are lowered together with the latter after each pass through the squared timber 1 until they come to rest on lateral stop surfaces 22 fixed to the frame, as indicated in FIG. 2 by dash-dotted lines. This position represents the greatest possible displacement of the belt frame 7 in the direction of the knife 5.
  • the displacement of the band plate 12 in the direction of the knife 5 is limited in that the edges 20 of the band plates 12 come into contact with the guide rails 21 as lateral guide elements. This prevents the elastic supports 13 of the band plates 12 from touching the knife 5 and being destroyed in the process. This minimum possible distance of the elastic pads 13 to Knife 5 is less than the thickness of the wooden slats 2 produced. This ensures that the squared timber can be completely broken down into wooden slats 2 until only a thinner remaining slat remains.
  • the stop surfaces 22 fixed to the frame limit the height mobility of the lateral guide rails 21 and thus of the entire belt frame 7.
  • the guide rails 21 prevent the feed belt 6 from sagging in the longitudinal direction, and the transverse stiffening of the feed belt 6 caused by the belt plates 12 itself prevents sag in the transverse direction.
  • FIGS. 5 to 7 differs from the previously described embodiment essentially only in that as belt support elements on the back of the feed belt 6 articulated links 23 form two articulated band support rails 24 arranged at a distance from one another.
  • the band support rails 24 support the band plates 12 or the chain links of the link chain 14.
  • All members 23 of the band support rail 24 are movably supported on the band frame 7 by means of movable supports 25 and pressure medium cylinders 26. This support ensures that the band plates 12 are pressed against the squared timber 1 with uniform force distribution.
  • the laterally projecting edges 20 of the band plates 12 form guide elements which, in cooperation with the lateral guide rails 21 and their support on the stop surfaces 22 fixed to the frame, limit the displacement of the feed band 6 towards the knife 5.
  • the endlessly rotating feed belt 6 consists of flexible material, for example of rubber with fabric inserts.
  • the feed belt 6 is supported in the region of its lower run by support rollers 27 on the back of the belt.
  • the support rollers 27 are each movably supported on the belt frame 7 via a support bracket 28 and a pressure medium cylinder 29 and, as in the examples described above, are pressed against the feed belt 6 with a predetermined force in order to ensure a uniformly distributed pressing force for the square timber 1.
  • stiffening bars 30 are inserted, for example vulcanized, at uniform, narrow intervals for transverse stiffening.
  • the rod ends 31 of the stiffening rods 30 protruding from the feed belt 6 on both sides form the guide elements with which the feed belt 6 is supported on the two lateral guide rails 21.
  • the lateral guide rails 21 are also fastened to the belt frame 7 via supports 21a.
  • the height mobility of the guide rails 21 and thus of the belt frame 7 is limited in the manner already described by side stop surfaces 22 fixed to the frame.
  • the rod ends 31 carry rollers 32 which reduce the friction when they come into contact with the guide rails 21.
  • the stiffening rods 30 can be designed as flat rods which have an elongated rod cross section which extends in the longitudinal direction of the strip. Instead, it is also possible, as shown in FIG. 11, to design the stiffening bars 30 with a round bar cross section.
  • Apparatus according to claim 1 or 2 characterized in that the band support elements (15, 24, 27) via pressure medium cylinders (19, 26, 29) are movably supported on the band frame (7).

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Wood Veneers (AREA)

Abstract

Dans un dispositif pour la séparation, sans enlèvement de copeaux, de lamelles de bois (2) dans un bois équarri (1), une bande d'avance sans fin (6) est montée dans un cadre (7) réglable en hauteur. La bande d'avance (6) presse le bois équarri (1) en plusieurs passes contre une lame (5) qui sépare à chaque fois une lamelle de bois (2). La bande d'avance (6) est renforcée dans le sens transversal et présente des éléments de guidage faisant saillie dans le sens latéral. Des deux côtés de la bande d'avance (6) sont disposés des rails de guidage sur lesquels s'appuient les éléments de guidage en saillie de la bande d'avance (6) pour limiter le décalage de la bande d'avance (6) par rapport à la lame (5). On évite ainsi que le bande d'avance (6) vienne au contact de la lame (5) lorsque le bois équarri (1) ne se présente plus que sous la forme d'une dernière lamelle mince.
PCT/EP1993/000068 1992-01-20 1993-01-14 Dispositif pour la separation de lamelles de bois dans un bois equarri sans enlevement de copeaux WO1993013921A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19924201339 DE4201339C1 (fr) 1992-01-20 1992-01-20
DEP4201339.9 1992-01-20

Publications (1)

Publication Number Publication Date
WO1993013921A1 true WO1993013921A1 (fr) 1993-07-22

Family

ID=6449840

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1993/000068 WO1993013921A1 (fr) 1992-01-20 1993-01-14 Dispositif pour la separation de lamelles de bois dans un bois equarri sans enlevement de copeaux

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Country Link
DE (1) DE4201339C1 (fr)
WO (1) WO1993013921A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0689909B1 (fr) 1994-06-28 1997-10-22 Gebrüder Linck, Maschinenfabrik "Gatterlinck" GmbH & Co.KG Chaîne transporteuse plane pour trancher des feuilles de bois
DE4432528A1 (de) * 1994-06-28 1996-01-04 Linck Masch Gatterlinck Plattenkette für Maschinen zum spanlosen Abtrennen von Holzlamellen
EP0698455A1 (fr) * 1994-08-23 1996-02-28 Gebrüder Linck, Maschinenfabrik "Gatterlinck" GmbH & Co.KG Dispositif d'amenée pour des machines à travailler le bois

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1495816A (en) * 1922-10-31 1924-05-27 Philip J Smith Jointer feed means
US1653916A (en) * 1925-11-23 1927-12-27 Jackson & Church Co Jointer
US2732867A (en) * 1956-01-31 Facing machine with resilient fingers belt feed
US3329182A (en) * 1965-06-14 1967-07-04 Werner H Wiesinger Multiple, straight line rotary saw assembly
FR1563007A (fr) * 1967-02-09 1969-04-11
CH594481A5 (en) * 1975-11-03 1978-01-13 Meyer & Schwabedissen F Device for pressing items on machine tool table
EP0277591A2 (fr) * 1987-01-31 1988-08-10 Gebrüder Linck, Maschinenfabrik "Gatterlinck" GmbH & Co.KG Appareil de fabrication de planches minces
WO1988007488A1 (fr) * 1987-03-27 1988-10-06 Scandiafelt Ab Bande de transport
EP0486770A1 (fr) * 1990-10-20 1992-05-27 Gebrüder Linck, Maschinenfabrik "Gatterlinck" GmbH & Co.KG Procédé et dispositif pour trancher des feuilles de bois d'une poutre

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2732867A (en) * 1956-01-31 Facing machine with resilient fingers belt feed
US1495816A (en) * 1922-10-31 1924-05-27 Philip J Smith Jointer feed means
US1653916A (en) * 1925-11-23 1927-12-27 Jackson & Church Co Jointer
US3329182A (en) * 1965-06-14 1967-07-04 Werner H Wiesinger Multiple, straight line rotary saw assembly
FR1563007A (fr) * 1967-02-09 1969-04-11
CH594481A5 (en) * 1975-11-03 1978-01-13 Meyer & Schwabedissen F Device for pressing items on machine tool table
EP0277591A2 (fr) * 1987-01-31 1988-08-10 Gebrüder Linck, Maschinenfabrik "Gatterlinck" GmbH & Co.KG Appareil de fabrication de planches minces
WO1988007488A1 (fr) * 1987-03-27 1988-10-06 Scandiafelt Ab Bande de transport
EP0486770A1 (fr) * 1990-10-20 1992-05-27 Gebrüder Linck, Maschinenfabrik "Gatterlinck" GmbH & Co.KG Procédé et dispositif pour trancher des feuilles de bois d'une poutre

Also Published As

Publication number Publication date
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