EP0107690A1 - Method and device for transforming billets into construction wood. - Google Patents
Method and device for transforming billets into construction wood.Info
- Publication number
- EP0107690A1 EP0107690A1 EP83901367A EP83901367A EP0107690A1 EP 0107690 A1 EP0107690 A1 EP 0107690A1 EP 83901367 A EP83901367 A EP 83901367A EP 83901367 A EP83901367 A EP 83901367A EP 0107690 A1 EP0107690 A1 EP 0107690A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sectors
- sector
- pressure
- glued
- drying
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B15/00—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form
- F26B15/02—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in the whole or part of a circle
- F26B15/08—Machines or apparatus for drying objects with progressive movement; Machines or apparatus with progressive movement for drying batches of material in compact form with movement in the whole or part of a circle in a vertical plane
-
- 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
- B27B1/00—Methods for subdividing trunks or logs essentially involving sawing
- B27B1/005—Methods for subdividing trunks or logs essentially involving sawing including the step of dividing the log into sector-shaped segments
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
- B27M3/00—Manufacture or reconditioning of specific semi-finished or finished articles
- B27M3/0013—Manufacture or reconditioning of specific semi-finished or finished articles of composite or compound articles
- B27M3/0026—Manufacture or reconditioning of specific semi-finished or finished articles of composite or compound articles characterised by oblong elements connected laterally
Definitions
- V he saw ren for processing of logs to Konstrutationsho with eh forming st annual rings and apparatus for Accomplishment of the process.
- the invention relates to a method for processing round wood into construction wood with standing annual rings, in which the round wood is first cut to length and the trunk is divided into wedge-shaped sector pieces which are mutually glued to one another and a device for carrying out the method.
- a particular problem in wood processing is the working of the wood, ie its change in shape due to swelling and shrinking when moisture is absorbed or released.
- the swelling or shrinkage is tangentially about twice as large as radial, the
- the object of the invention is to demonstrate a method in which board-like structural timber with only standing annual rings can be produced from logs, which does not require any dome production compared to known methods and thus ensures a high timber yield with uniform quality at any log diameter, whereby from the Diversity of the intermediate products that can be produced by the process and that can be selected in each case for the further processing.
- Another object of the invention is to show an apparatus for carrying out the method.
- the object is achieved in that at least two of the branches are made from a circular one
- Trunk cross-section of the wedge-shaped sectors each with a sector area provided with a layer of glue, are placed on top of one another in such a way that the respective other sector areas are arranged parallel to one another and the annual rings are upright and then the
- Sectors are glued together with a pressure to form a sector block.
- the device for carrying out the method consists of a sawing device, a drying device which can be loaded with sectors with a drying basket and a pressing device.
- FIG. 1 is a schematic representation of the construction of a construction part according to the invention from sectors of a log in a side view in section,
- 5a shows the veneer image in the case of separating cuts carried out on a structural part in and 5b in different directions
- Fig. 7a the pressing device for producing sector blocks and 7b in a schematic cross section.
- End faces 18, 19 may be formed in a manner known per se (FIG. 2), the surfaces of which are coated with a layer of glue.
- FIG. 3a Another possibility is shown in FIG. 3b
- Finger tines 24 are formed on the round end sections 22 of the sector blocks 17 to be connected to one another in such a way that the finger tines 24 of the one Sektoj? -. " ⁇ block 17 can be inserted into the grooves 25 between the finger tines 24 of the other sector block 17. The finger tines 24 can be held in the grooves 25 both by clamping action and by gluing. 5 This toothing shown in Fig. 3b has the
- sector blocks 17 provided with finger tines 24 and grooves 25 can therefore also be joined together without glue, such as tongue and groove boards. If several sectors and sector blocks 17 form a large sector block
- devices 12d, 12e can be used (FIGS. 7a and 7b). Both devices have a stop 28, which is arranged on the lateral end section 26 of the stop surfaces 13, 14 and on which the side stop facing it
- device 12d acts on stamps 16 on the sectors 4, 4a and sector blocks 17 -25 arranged between the stop surfaces 13, 14
- elastic pressure-resistant hoses 32 which the elastic pressure-resistant hoses 32 can be fixed in their position.
- elastic pressure-resistant hoses 32 are arranged alternately between the round end sections 22 of the sectors 4, 4a and the stops 28, 31.
- the veneer has a stripe pattern, as is shown schematically in FIG. 5a.
- a separating cut in the direction X ' a flat image is achieved for the veneer.
- the sector blocks 27 have to be moist before the separating cuts.
- the sectors 4, 4a are expedient and, in the case of certain woods, also necessary for the sectors 4, 4a to be glued with moisture. Since it is only in the manufacture of veneers
- the annual rings 3 need not be very straight. Furthermore, it is possible to use sectors 4, 4a with a larger wedge angle than is the case for the production of construction timber.
- the sectors 4, 4a of a trunk are expediently glued to form a large sector block 27, since this avoids frequent clamping in the veneer knife machine and better material utilization is achieved.
- the sector blocks 17 can also be used for the production of the middle layers for plywood panels, the quality of which then
- the sawing device 33 and the drying device 34 are shown schematically in FIGS. 6a and 6b.
- the log 1 to be processed is first sawn into handy lengths and then milled into a circular cylinder.
- This cylindrical log 1 is then introduced into the sawing device 33.
- the sawing units 36 By appropriate adjustment of the sawing units 36, it is possible for them to make longitudinal cuts in the round timber 1, which are adjusted according to the center angle of the desired sectors 4, 4a. By means of this sawing device 33, it is thus possible to achieve a desirable high level of quality, ie to cut out a maximum number of sectors 4, 4a per log 1.
- the annual rings 3 are all the more straight in the glued end product, as a result of which the corresponding properties such as stamina, resistance to warping, etc. are particularly good.
- the saw units 36 are designed so that they can be moved out laterally when not in use, for maintenance, for adjusting or for changing the saw blade.
- the sawing units 3 can expediently be designed as band saws.
- a conveying device 38 For the advancement of the round timber 1 through the sawing device 33, a conveying device 38 is provided, which has circularly arranged adjustable conveying rollers 39.
- the conveyor rollers 39 can the respective diameter of the log 1 to be cut can be adapted so that the log 1 is always arranged centrally in the sawing device 33.
- a drying device 3 is arranged at the exit of the sawing device 33.
- the sectors 4, 4a produced in the sawing device 33 are first inserted into a drying basket 41 at the exit of the sawing device 33.
- the sectors 4, 4a are arranged in a circular cross-section and are held between radially extending holding webs 45.
- the z. B. may consist of compression springs 46, the sectors 4, 4a are pressed into the drying basket 1 until they lie flat against the retaining webs 45.
- the drying basket 41 which can also be designed as a drying drum, is pushed into the drying device 3 with the wedge-shaped sectors 4, 4a and can be rotated therein.
- Nozzles 47 are formed in the wall 44 of the hollow chamber 42 of the drying device 34, through which drying air is blown into the hollow chamber 42. Exhaust air openings (not shown in more detail) are provided diametrically to the nozzles 47, so that full-area transverse ventilation in the drying device 34 is achieved. It is possible to use suitable air guiding means to design the air flow in such a way that either the entire lateral surface or only part of it is acted upon. By appropriate design of the nozzles 47, it is possible that when the
- Drying basket 41 in each case only the space between two sectors 4, 4a is intensively flowed through with the drying air. For this reason, the holding webs 45 are formed such that a free space through which drying air can flow is formed between the sectors 4, 4a.
- the drying device 3 is for all conventional drying processes that work with air movement such as B. warm air, hot air, hot steam, condensation drying u. Like applicable.
- drying basket 41 is filled with the sectors of a round timber 1, there are advantages for the further processing stages, since z. B. sorting of individual sectors 4, 4a is no longer required. In addition, the training of the drying
- such a pressing device can also be used in which the stop 28 is arranged horizontally and the stop surfaces 13, 14 are horizontally displaceable relative to one another.
- the segments and tips of the sectors 4, 4a, which face away from the '2-5 stop 28, of the sectors 4, 4a mounted between the stop surfaces 13, 14 can be pressurized by means of a pressure plate or pressure rail which extends over the entire sector block 27 will.
- This design of a 30 press device 35 is extremely advantageous in handling.
- the first four sectors 4 are first placed on the stop 28 so that their wide edges touch and the lower right edge of the right sector 35 4 touches approximately the stop surface 14.
- the sectors 4, 4a Since the focus of the sectors 4, 4a is relatively far below, the sectors 4, 4a remain with their peaks pointing upwards. Then the left stop surface 13 becomes careful moved up until it approximately touches the lower edge of the left sector 4, 4a. Now the remaining sectors 4, 4a or the outer halves of sectors can be placed between them from above. To ensure that all sector surfaces touch during pressing, the movable left stop surface 13 or right stop surface 14 is now somewhat withdrawn, so that the sectors 4, 4a lying above can be pressed down a small way until their tips are in each case protrude slightly between the wide edges of the adjacent sectors 4, 4a. Then the upper pressure plate is fixed and the sector block 27 is pressed under pressure by means of the stop surface 13 or both stop surfaces 13, 1.
- the method according to the invention and the device described are suitable for various fields of woodworking.
- the use in the production of plywood is advantageous since a high wood yield is achieved in connection with an excellent technological quality of the finished panels.
- Use in the manufacture of veneers is also advantageous, since round timber 1 of small dimensions can also be used according to the method described. This has the advantage that rotten kernels occur relatively rarely and the wood yield is very good.
- the veneers have standing annual rings. As a result, the swelling / shrinkage potential in the board plane is only about half as large as in the known plywood boards. Due to the uniform structure, the internal tensions are so low that the plates also have very good stamina.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- General Engineering & Computer Science (AREA)
- Veneer Processing And Manufacture Of Plywood (AREA)
Abstract
Dans le procédé pour transformer des billes de bois en bois de construction avec cercles annuels de croissance verticaux ou en bois pour le contreplacage, la bille est d'abord coupée en tronçons de longueur aisée à manier, puis fraisée circulairement, ensuite le tronc est divisé en secteurs en forme de coin qui sont collés ensemble. Au moins deux secteurs (4, 4a) en forme de coin découpés dans la section du tronc sont placés l'un sur l'autre, une face (7, 8) de chaque coin étant munie d'une couche de colle, de telle manière que les autres faces (5, 6) des coins soient parallèles et que les cercles de croissance (3) soient debout. Les secteurs (4, 4a) sont ensuite collés avec application d'une pression. A cet effet, on utilise un dispositif présentant deux surfaces de butée (13, 14) disposées parallèlement entre elles à une distance Y sur lesquelles les surfaces (5, 6) de secteurs d'un bloc de secteurs (17, 27) peuvent s'appuyer. Les secteurs (4, 4a) sont parallèles aux surfaces de butée (13, 14) et peuvent être soumis à la pression à l'aide de moyens de transmission de pression.In the process of transforming wooden logs into timber with annual vertical growth circles or into wood for plywood, the log is first cut into sections of length easy to handle, then circularly milled, then the trunk is divided into wedge-shaped sectors that are glued together. At least two wedge-shaped sectors (4, 4a) cut out from the trunk section are placed one on the other, one face (7, 8) of each corner being provided with a layer of glue, such so that the other faces (5, 6) of the corners are parallel and the growth circles (3) are upright. The sectors (4, 4a) are then bonded with the application of pressure. For this purpose, a device is used having two abutment surfaces (13, 14) arranged parallel to one another at a distance Y over which the surfaces (5, 6) of sectors of a block of sectors (17, 27) can be 'to press. The sectors (4, 4a) are parallel to the abutment surfaces (13, 14) and can be subjected to the pressure using pressure transmission means.
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT83901367T ATE58321T1 (en) | 1982-05-04 | 1983-05-04 | METHOD FOR PROCESSING ROUND TIMBER INTO CONSTRUCTION TIMBER WITH STANDING RINGS AND DEVICE FOR CARRYING OUT THE PROCESS. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19823216669 DE3216669A1 (en) | 1982-05-04 | 1982-05-04 | METHOD FOR PROCESSING ROUND WOOD TO CONSTRUCTION WOOD OR VENEER AND DEVICE FOR CARRYING OUT THE METHOD |
DE3216669 | 1982-05-04 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0107690A1 true EP0107690A1 (en) | 1984-05-09 |
EP0107690B1 EP0107690B1 (en) | 1990-11-14 |
Family
ID=6162680
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP83901367A Expired - Lifetime EP0107690B1 (en) | 1982-05-04 | 1983-05-04 | Method and device for transforming billets into construction wood |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0107690B1 (en) |
DE (2) | DE3216669A1 (en) |
WO (1) | WO1983003791A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2465148A (en) * | 2008-11-05 | 2010-05-12 | Peter Ransom | Method of manufacturing a plank of wood from wedge shaped pieces |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4747899A (en) * | 1986-01-31 | 1988-05-31 | Meinan Machinery Works, Inc. | Method for improving the mechanical strength of veneer sheets having lathe checks |
AU623344B2 (en) * | 1987-11-16 | 1992-05-14 | Radial Corporation Limited | Method of sawing timber and timber products formed thereby |
WO1989004747A1 (en) * | 1987-11-27 | 1989-06-01 | Andrew Karl Knorr | Method of sawing timber and timber products formed thereby |
AT398184B (en) * | 1989-01-18 | 1994-10-25 | Kohlhuber Gerald | METHOD FOR PROCESSING SMALL LUMBER TO PROFILE WOOD |
SE9003554L (en) * | 1990-11-08 | 1992-05-09 | Traeform I Karlstad Ab | MANUFACTURING OF LIMITED WOODEN PRODUCTS |
SE9103009L (en) * | 1991-10-16 | 1993-04-17 | Lars Hammarstroem | PROCEDURE FOR REDUCING A STOCK |
FI95887C (en) * | 1994-11-01 | 2001-05-18 | Tapojaervi Eero Antero | Joining arrangement for wood element blank |
AUPN672995A0 (en) * | 1995-11-22 | 1995-12-14 | Australian Radial Timber Conversion Company (Radcon) Pty. Ltd., The | Radial sawing log holder |
AUPN672895A0 (en) * | 1995-11-22 | 1995-12-14 | Australian Radial Timber Conversion Company (Radcon) Pty. Ltd., The | Radial sawn posts |
AUPN673095A0 (en) * | 1995-11-22 | 1995-12-14 | Australian Radial Timber Conversion Company (Radcon) Pty. Ltd., The | Chair with radially sawn timber components |
DE19613237C2 (en) * | 1996-04-02 | 1999-06-02 | Kirst Ralph Dipl Ing Fh | Beams and process for their manufacture |
SE9602426L (en) * | 1996-06-19 | 1997-12-20 | Primwood Ab | Procedure and pressure for the manufacture of glue joint |
AT2296U1 (en) * | 1997-06-13 | 1998-08-25 | Felbermayr Herbert | METHOD FOR PRODUCING PROFILE WOOD |
IT1391699B1 (en) * | 2008-11-10 | 2012-01-17 | Antonini Legnami S R L | PROCEDURE FOR THE REALIZATION OF A WOOD BASED PRODUCT AND PRODUCT SO OBTAINED |
SE538283C2 (en) * | 2014-08-08 | 2016-04-26 | Stora Enso Oyj | A gluelam structural member and a method of producing such agluelam structural member |
DE102016003506A1 (en) * | 2016-03-18 | 2017-09-21 | Weinig Dimter Gmbh & Co. Kg | Process for the production of blocks of juxtaposed, glued together wooden parts and plant for carrying out the method |
CN111493569A (en) * | 2020-05-21 | 2020-08-07 | 张乐童 | Multi-layer fan annular step rotary lifting type round wood bench |
AT524491A1 (en) * | 2020-12-14 | 2022-06-15 | Leitinger Hans Peter | Pair of boards, composite wood panel and method for their manufacture |
Family Cites Families (26)
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DE290153C (en) * | ||||
DE692C (en) | 1877-10-15 | W. TILLMANNS, Fabrikant, in Remscheid | Buildings that can be dismantled from corrugated sheet metal, made with ventilation and heating in mind | |
CH183513A (en) | 1935-05-20 | 1936-04-15 | Maag Hans | Process for the production of middle layers for carpentry purposes. |
DE692987C (en) * | 1938-12-25 | 1940-06-29 | Otto Kreibaum | or the like with exclusively standing growth rings |
DE831524C (en) * | 1950-09-09 | 1952-02-14 | Eugen Eisenmann | Method and device for drying stacked or loosely layered goods, in particular wood, by means of a rotating drying rack |
US2711196A (en) * | 1953-06-01 | 1955-06-21 | David M Daniel | Tilting arbor band saw |
DE977090C (en) * | 1953-10-13 | 1965-01-28 | Svenska Taendsticks Aktiebolag | Gluing press |
DE1453251A1 (en) * | 1964-12-17 | 1969-02-20 | Libella Gmbh & Co Kg | Pressing device for the production of panel-shaped components |
GB1086450A (en) * | 1965-09-24 | 1967-10-11 | Kahrs Maskiner Aktiebolag | Improvements in or relating to a method of and apparatus for working wood |
AU4767668A (en) * | 1968-12-12 | 1970-06-18 | Demello Ruben | A method for producing rotary wood veneers on veneer lathes, from artificial logs, andthe resulting plywood |
CA881312A (en) * | 1970-10-19 | 1971-09-21 | Forano Limitee | System for controlling the setting of a quadruple band saw |
DK127846B (en) * | 1972-01-20 | 1974-01-21 | Obel Pedersen Ib | Method of gluing objects together and apparatus for the method of exercise. |
US3961654A (en) * | 1973-02-20 | 1976-06-08 | Earl Dean Hasenwinkle | Log cutting and rejoining process |
US3903943A (en) | 1974-04-15 | 1975-09-09 | Weyerhaeuser Co | Log cutting and rejoining process |
US4077448A (en) * | 1975-12-31 | 1978-03-07 | Weyerhaeuser Company | Improved edging system |
US4027769A (en) * | 1976-01-07 | 1977-06-07 | Weyerhaeuser Company | Machine for conveying sector shaped pieces |
US4111247A (en) * | 1977-01-13 | 1978-09-05 | Weyerhaeuser Company | Log cutting and rejoining process for lumber manufacture |
US4101372A (en) * | 1977-01-13 | 1978-07-18 | Weyerhaeuser Company | Width adjusting thickness setting clamping system |
FR2381261A1 (en) * | 1977-02-18 | 1978-09-15 | Dubuit Jean Louis | ULTRAVIOLET RADIUS DRYING DEVICE |
DE2720762C3 (en) * | 1977-05-09 | 1982-09-16 | Otto Ing.(Grad.) 3216 Salzhemmendorf Kreibaum | Process for processing round timber into composite panels |
US4122878A (en) * | 1977-12-14 | 1978-10-31 | Baltek Corporation | Technique for converting balsa logs into panels |
DE2827308A1 (en) * | 1978-06-21 | 1980-01-10 | Singer Gmbh & Co Ing Buero | Round wooden bar mfg. process - has final sizing performed only after drying of initially wider cut planks |
MX152427A (en) * | 1979-09-12 | 1985-07-15 | Mexicano Inst Petrol | IMPROVED REACTOR AND PROCEDURE FOR ETHYLENE OXYCHLORATION |
DE2938062C2 (en) * | 1979-09-20 | 1983-07-21 | Otto 3216 Salzhemmendorf Kreibaum Sen. | Wooden construction element which is composed of round wood side sections that are essentially milled in a trapezoidal cross-section |
DE2942727C2 (en) * | 1979-10-23 | 1984-05-17 | Beton- und Plattenwerk-Westerstede GmbH & Co KG, 2910 Westerstede | Device for the continuous drying of freshly made concrete parts |
DE2947611C2 (en) * | 1979-11-26 | 1984-01-19 | Kurt Ing.(grad.) 8625 Sonnefeld Feyler | Process for the production of board lamellas |
-
1982
- 1982-05-04 DE DE19823216669 patent/DE3216669A1/en not_active Withdrawn
-
1983
- 1983-05-04 WO PCT/DE1983/000081 patent/WO1983003791A1/en active IP Right Grant
- 1983-05-04 DE DE8383901367T patent/DE3381994D1/en not_active Expired - Fee Related
- 1983-05-04 EP EP83901367A patent/EP0107690B1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO8303791A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2465148A (en) * | 2008-11-05 | 2010-05-12 | Peter Ransom | Method of manufacturing a plank of wood from wedge shaped pieces |
Also Published As
Publication number | Publication date |
---|---|
DE3216669A1 (en) | 1983-11-10 |
EP0107690B1 (en) | 1990-11-14 |
DE3381994D1 (en) | 1990-12-20 |
WO1983003791A1 (en) | 1983-11-10 |
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