WO2007028187A1 - Procede et dispositif pour produire un assemblage par cheville pour des elements en bois - Google Patents

Procede et dispositif pour produire un assemblage par cheville pour des elements en bois Download PDF

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Publication number
WO2007028187A1
WO2007028187A1 PCT/AT2006/000371 AT2006000371W WO2007028187A1 WO 2007028187 A1 WO2007028187 A1 WO 2007028187A1 AT 2006000371 W AT2006000371 W AT 2006000371W WO 2007028187 A1 WO2007028187 A1 WO 2007028187A1
Authority
WO
WIPO (PCT)
Prior art keywords
dowel
bore
components
diameter
pressure rollers
Prior art date
Application number
PCT/AT2006/000371
Other languages
German (de)
English (en)
Inventor
Erwin Thoma
Original Assignee
Erwin Thoma
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 Erwin Thoma filed Critical Erwin Thoma
Publication of WO2007028187A1 publication Critical patent/WO2007028187A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/10—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
    • E04C2/16—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products of fibres, chips, vegetable stems, or the like
    • 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
    • B27M3/0006—Devices for fixing fittings into holes
    • 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
    • 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
    • B27M3/28—Manufacture or reconditioning of specific semi-finished or finished articles of dowels or bolts
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/10—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
    • E04C2/12—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products of solid wood

Definitions

  • the invention relates to a method for producing a dowel joint for timber construction elements, in particular for the glue-free connection of wall, roof and ceiling elements made of wood or glue-free wood beams.
  • JP 2000-064436 A shows a dowel which is compressed prior to driving and then increases its volume by absorbing moisture. In order to achieve a secure hold, a relatively strong compression must be performed, which leads under unfavorable conditions to damage of components.
  • the object of the present invention is to avoid these disadvantages and to provide a method which ensures a particularly strong and durable dowel connection. According to the invention, such a method comprises the following steps:
  • An essential aspect of the present invention is the fact that during the pressing process a defined surface structure is pressed into the dowel.
  • the essential feature of the present invention is in particular the realization that it is possible to compress wooden dowels in the dry state by radial pressure, so that they do not or only slightly increase their diameter again for the time being. Only by the moisture balance with the surrounding component and / or by addition of moisture during insertion of the dowel tries to expand again, whereby the corresponding frictional connection is made.
  • the compressed dowel has a larger diameter than the bore and is pressed into this.
  • a particularly strong and durable dowel joint can be achieved if the dowel is preferably dried before being introduced into the bore prior to compression to provide a moisture difference from the components to be joined.
  • the pressing can on the one hand global, ie large area, done by the individual layers of solid wood components of a device to be pegged, are clamped by respective clamping elements by pressing bars transversely to the plane of the device.
  • Typical surface pressures are between 5 N / cm 2 and 30 N / cm 2 .
  • the surface pressure here can typically be between 30 N / cm 2 and 200 N / cm 2 and is preferably about 100 N / cm 2 .
  • the pressing is achieved, for example, by punches with an annular pressing surface, which are pressed centrally around each bore on the workpiece.
  • the present invention relates to an apparatus for producing a dowel joint.
  • the wood dowel is compressed by at least three profiled pressure rollers which are arranged around the circumference of a cylindrical space area for receiving a dowel.
  • the compression of the wooden dowel can be done for example by three offset by 120 ° pressure rollers.
  • at least three profiled drive rollers are arranged at least approximately the same extent around the circumference of a cylindrical space area for receiving a dowel, wherein the drive rollers are each rotatably mounted about an axis and the axes are skewed to - and in a normal plane on - the axis of the cylindrical space area are arranged.
  • the mechanical compression in this case is achieved in that the milled dowel passes through a press, are arranged in the three or more pressure rollers with concave curved profile, wherein the pressure rollers compress the dowel in the direction of the diameter.
  • the profile may be semi-circular in cross section or parabolic. The radius of curvature measured at the apex of the profile should correspond to the radius of the compressed anchor.
  • At least two groups of pressure rollers are offset axially with respect to the cylindrical space area and are preferably also arranged angularly offset about the axis of the cylindrical space area.
  • a specific surface structure such as transverse grooves, grid-shaped elevations or depressions or the like, is pressed into the dowel.
  • the insertion of the wooden dowel into the hole can be done dry.
  • a lubricant for example, water, or for additional static safety, an adhesive, for example, an adhesive liquid, such as casein, spray.
  • the liquid can be put together in the sense of a biologically harmless product from food-safe ingredients.
  • the invention relates to a dowel joint for timber construction elements, in particular wall, roof and / or ceiling elements made of wood or glue-free wooden beams, with at least two connected components, which have at least one common bore into which a dowel is inserted, the before insertion into the Bore is compressed by radial pressure.
  • a dowel joint for timber construction elements in particular wall, roof and / or ceiling elements made of wood or glue-free wooden beams, with at least two connected components, which have at least one common bore into which a dowel is inserted, the before insertion into the Bore is compressed by radial pressure.
  • a defined surface structure preferably transverse grooves, grid-shaped elevations or depressions is pressed.
  • Fig. 1 is a wall element connection according to the inventive method; 2 shows a device according to the invention for compressing a dowel; and
  • Fig. 3 is a schematic sectional view explaining the method according to the invention.
  • the dowel 3 In order to achieve and improve without additional glue a static strength requirements of the pinned components 1, 2, which are designed as solid wood components, and the dowel 3 are mechanically compacted before the mechanical pressing into the laminated wood element 4, so that their diameter to 2 to 20% reduced.
  • Such dowels 3 swell after being pressed into the holes 5, 6 of the solid wood components 1, 2 stronger than conventionally milled wooden dowels, even if they are drier than the wood of solid wood components 1, 2 introduced.
  • the diameter d of the bores 5, 6 can be made smaller than the diameter D of the dowel 3.
  • the difference between the diameter D of the dowel 3 and the diameter d of the bores 5, 6 can be up to 20% of the diameter d of the bores 5, 6 amount.
  • the dowels 3 are machined in the smaller diameter holes 5, 6 are pressed.
  • the composition of this liquid can consist of food-safe ingredients in the sense of a biologically harmless product.
  • the pre-pressed anchor 3 can also be introduced dry into the laminated wood element 4.
  • the mechanical compression can be achieved for example by a device 10 shown in FIG. 2, which has three or more pressure rollers 11, 12.
  • the device 10 has two groups of pressure rollers 11, 12.
  • the pressure rollers of a group are uniformly arranged around the circumference of a cylindrical space 13, in which the dowel 3 is inserted, wherein the pressure rollers 11, 12 about axes IIa, 12a are rotatably arranged.
  • the radius r of the profile of the pressure rollers 11, 12 corresponds to the radius R of the compressed dowel 3.
  • the axes IIa, 12a are skewed with respect to the axis 13a of the cylindrical space area and arranged in a normal plane on the axis 13a of the cylindrical space portion 13 and can be delivered by a force applying device 14 radially to the cylindrical space area 13.
  • the pressure rollers 11, 12 of a group are arranged distributed at an angle of 120 ° around the circumference.
  • the pressure rollers 11 of a group and the pressure rollers 12 of the second group are axially spaced with respect to the axis 13a and offset by an angle ß of 60 ° to each other.
  • the dowel 3 is pushed in the direction of the axis 13a in the cylindrical space portion 13 between the pressure rollers 11, 12, pulled through or further conveyed by the pressure rollers, wherein at the same time by the pressure rollers 11, 12, radial pressure is exerted. Compression can be done in one or more compression steps.
  • the result of the compression process is a dowel 3, the diameter D is reduced by 2 to 20% with respect to the initial state.
  • the dowel 3 retains its reduced cross-section until the wood of the dowel 3 absorbs moisture from its surroundings and thus swells. The moisture absorption and swelling takes place after introduction into the bores 5, 6.
  • the compression process of the anchor 3 can also be done by other compression devices, such as mechanical, hydraulic or hydrostatic presses, or the like.
  • FIG. 3 it can be seen that the solid wood components 1 to be dowelled, which are to be connected to form a plate-shaped component, such as a wall element, are pressed together in the direction of the arrows 18 by plate-shaped pressing bars 16 a, 16 b.
  • the pressure exerted by the press beams 16a, 16b is, for example, 15 N / cm 2 .
  • the solid wood components 1 are compressed by annular punches 17a, 17b.
  • the contact pressure at a bearing surface of 100 cm 2 is 12 kN, ie the surface pressure is about 120 N / cm 2 .
  • the present invention makes it possible to produce timber components in optimal form by dowel joints, with maximum strength and durability combined with ecological compatibility.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Architecture (AREA)
  • Manufacturing & Machinery (AREA)
  • Forests & Forestry (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

L'invention concerne un procédé servant à produire un assemblage par cheville, notamment pour l'assemblage sans colle de panneaux en bois. Le procédé selon l'invention comprend les étapes suivantes : perçage d'au moins un alésage (5, 6) de diamètre prédéfini (d) dans les éléments à assembler (1, 2) ; fourniture d'une cheville de bois (3) de diamètre extérieur supérieur au diamètre (d) de l'alésage dans les éléments à assembler (1, 2) ; compression, par pressage radial, de la cheville de bois à un diamètre (D) correspondant environ au diamètre (d) de l'alésage (5, 6) dans les éléments à assembler ; insertion de la cheville de bois (3) dans l'alésage (5, 6). Une structure de surface définie, de préférence des rainures transversales ou des élévations ou creux en forme de grille, est estampée dans la cheville (3) pendant l'étape de pressage.
PCT/AT2006/000371 2005-09-06 2006-09-06 Procede et dispositif pour produire un assemblage par cheville pour des elements en bois WO2007028187A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT14562005A AT502017B1 (de) 2005-09-06 2005-09-06 Herstellung einer dübelverbindung
ATA1456/2005 2005-09-06

Publications (1)

Publication Number Publication Date
WO2007028187A1 true WO2007028187A1 (fr) 2007-03-15

Family

ID=37433932

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT2006/000371 WO2007028187A1 (fr) 2005-09-06 2006-09-06 Procede et dispositif pour produire un assemblage par cheville pour des elements en bois

Country Status (2)

Country Link
AT (1) AT502017B1 (fr)
WO (1) WO2007028187A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008028925A1 (fr) * 2006-09-06 2008-03-13 Erwin Thoma Procédé de fabrication de pièces en forme de plaque
EP2390433A1 (fr) 2010-05-31 2011-11-30 Norbert Dr. Merl Eléments préfabriqués et leur procédé de fabrication
CN113771174A (zh) * 2021-08-03 2021-12-10 扬州工业职业技术学院 复合木枪钉的生产方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2612195A (en) * 1947-08-11 1952-09-30 Peter A Rahaim Process of making improved dowel stock and dowel pins
US2681086A (en) * 1951-10-15 1954-06-15 Hans Heid Device for the manufacture of round corrugated wooden rods
GB2126681A (en) * 1982-09-09 1984-03-28 Modular Syst Dowel fastener and joints including same
WO2000003850A1 (fr) * 1998-07-13 2000-01-27 Erwin Thoma Element en bois stratifie prefabrique
JP2000064436A (ja) * 1998-08-25 2000-02-29 Kyodo Kumiai Tamahara Craft 木材の連結構造
WO2002088483A1 (fr) * 2001-04-26 2002-11-07 Erwin Thoma Element de bois stratifie prefabrique

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3338224C2 (de) * 1983-10-21 1985-12-12 Walter 4520 Melle Fischer Verbindungselement zur unsichtbaren Verbindung von Teilen, insbesondere flächigen Teilen bei Möbeln
JP3388336B2 (ja) * 1996-12-27 2003-03-17 株式会社ウッドワン 木質構造材の接合方法
JP3728739B2 (ja) * 2002-12-05 2005-12-21 宮崎県 木ダボとその製造方法及び木ダボを用いた接合方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2612195A (en) * 1947-08-11 1952-09-30 Peter A Rahaim Process of making improved dowel stock and dowel pins
US2681086A (en) * 1951-10-15 1954-06-15 Hans Heid Device for the manufacture of round corrugated wooden rods
GB2126681A (en) * 1982-09-09 1984-03-28 Modular Syst Dowel fastener and joints including same
WO2000003850A1 (fr) * 1998-07-13 2000-01-27 Erwin Thoma Element en bois stratifie prefabrique
JP2000064436A (ja) * 1998-08-25 2000-02-29 Kyodo Kumiai Tamahara Craft 木材の連結構造
WO2002088483A1 (fr) * 2001-04-26 2002-11-07 Erwin Thoma Element de bois stratifie prefabrique

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008028925A1 (fr) * 2006-09-06 2008-03-13 Erwin Thoma Procédé de fabrication de pièces en forme de plaque
US8074358B2 (en) 2006-09-06 2011-12-13 Erwin Thoma Method for the production of panel-type components
EP2390433A1 (fr) 2010-05-31 2011-11-30 Norbert Dr. Merl Eléments préfabriqués et leur procédé de fabrication
CN113771174A (zh) * 2021-08-03 2021-12-10 扬州工业职业技术学院 复合木枪钉的生产方法

Also Published As

Publication number Publication date
AT502017A4 (de) 2007-01-15
AT502017B1 (de) 2007-01-15

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