EP0102446B1 - Vorrichtung zur Herstellung von auf Biegung beanspruchten Bauelementen aus Holz - Google Patents

Vorrichtung zur Herstellung von auf Biegung beanspruchten Bauelementen aus Holz Download PDF

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Publication number
EP0102446B1
EP0102446B1 EP83103271A EP83103271A EP0102446B1 EP 0102446 B1 EP0102446 B1 EP 0102446B1 EP 83103271 A EP83103271 A EP 83103271A EP 83103271 A EP83103271 A EP 83103271A EP 0102446 B1 EP0102446 B1 EP 0102446B1
Authority
EP
European Patent Office
Prior art keywords
stressing
glue
component
parts
compressive
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
Application number
EP83103271A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0102446A1 (de
Inventor
Werner Reppel
Claus Overlack
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.)
HOERDENER HOLZWERK GmbH
Original Assignee
HORDENER HOLZWERK GmbH
Hordener Holzwerk GmbH
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 HORDENER HOLZWERK GmbH, Hordener Holzwerk GmbH filed Critical HORDENER HOLZWERK GmbH
Priority to AT83103271T priority Critical patent/ATE27978T1/de
Publication of EP0102446A1 publication Critical patent/EP0102446A1/de
Application granted granted Critical
Publication of EP0102446B1 publication Critical patent/EP0102446B1/de
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/12—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members
    • 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
    • B27M3/0053—Manufacture or reconditioning of specific semi-finished or finished articles of composite or compound articles characterised by oblong elements connected laterally using glue
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1062—Prior to assembly
    • Y10T156/1066—Cutting to shape joining edge surfaces only

Definitions

  • the invention relates to a device for producing wooden components that are subjected to bending in the installed state and consist of at least two parts glued together, at least some of which have a linear force acting exclusively in their longitudinal direction across their entire cross-section, which generates compressive or tensile stresses is preloaded, consisting of a glue-tensioning bed receiving the parts of the component in parallel position with opposing pressing surfaces, at least one of which can be delivered against the one outer part of the component while applying the pressing force required for gluing.
  • the object of the invention is to propose a device for producing such prestressed and glued wooden components.
  • the invention is based on a known device (EP-A-0 048 812) with a glue fitted bed receiving the parts of the component in parallel with opposing pressing surfaces, at least one of which is against the outer part of the component Application of the pressing force required for gluing is deliverable.
  • This known device is used for high-frequency gluing of multi-part profiled wood and is characterized according to the invention by at least one clamping device which acts on the free ends of the part to be preloaded and which produces the linear compressive or tensile force during the gluing.
  • the parts of the component to be preloaded are placed - if appropriate together with the other parts or in front of them - in the clamping bed and connected at their free ends to the clamping device.
  • the pressing surfaces are moved against the outer parts of the component until the pressing force required for the gluing is brought into effect.
  • the tensioning device remains in effect.
  • the glue has set, which can be accelerated using the high-frequency method, for example, the pressing surfaces are released and the tensioning device is uncoupled.
  • the component then deforms in accordance with the impressed preloads.
  • a preferred embodiment of the device is characterized by two prestressing devices for applying a tensile and a compressive prestress to different parts of the component lying in the glue-fitted bed. With this device, opposing bias voltages can be entered into the component, which lead to the greatest possible load-bearing capacity.
  • an I-profile 1 is to be prestressed and glued.
  • the bars forming this profile 1 consist of the web 2 on its longitudinal sides adjoining straps 3.
  • the device which is known as a pure glue device from EP-A-0 048 812, initially has a conveyor device in the form of a carriage 8, which can be moved on rails 4, 5 by means of rollers 6, 7 and serves as a glue clamping bed.
  • at least one roller 7 is designed as a guide roller, for example with a double flange, in order to guide the carriage 8 with as little play as possible.
  • board rolls can of course also be provided.
  • the carriage 8 has a bottom 9 and mutually opposite side walls 10, 11, between which the bars of the profile 1 are received.
  • One of the side walls - the side wall 11 in the exemplary embodiment shown - has a pressing device, which is indicated schematically in the drawing by a pressing surface 13 and a directional arrow 14.
  • the pressing device acts from the side on the left belt 3 of the profile 1, while the other side cheek - optionally with the interposition of a wooden board or the like. Serves as an abutment for the other belt 3.
  • the device also has a stationary pressing device 15, which consists of a plurality of gallows-shaped carriers 16 arranged one behind the other at a distance, each of which has a vertical pressure cylinder schematically indicated by the direction arrow 17.
  • the pressure cylinders act via one or more pressure pieces 18 on the upper side of the web 2 and the belts 3, so that these are under the same pressing force.
  • the pressure piece 18 can also be designed as a template corresponding to the upper profile contour.
  • the web 2 and the belts 3 are pressed against the base 12 by means of the pressure cylinders 17 and are both directed and aligned with one another.
  • a tensioning device 27 (FIG. 2) is arranged, which on the tension bed, i.e. on the carriage 8, e.g. is attached to the side cheeks 10, 11 or on the bottom 9.
  • the tensioning device 27 shown in FIG. 2 is used to enter a tension preload.
  • it has a nail plate 28 or the like which engages the part to be prestressed - here one of the straps 3 of the profile 1.
  • the nail plate 28 is articulated on an arm 29 of an angle lever 30, the other arm 31 of which is loaded by a preloading weight 32.
  • the angle lever 30 is pivotally mounted on a bracket 33.
  • a similar tensioning device 27 is arranged or the belt 3 is only held there.
  • the other belt 3 of the profile is placed under a prestress.
  • the clamping device 27 shown in FIG. 4 which differs from that according to FIG. 2 only in that the nail plate is replaced by a pressure plate 34, is used for this purpose.
  • a similar clamping device or just a simple abutment can be arranged at the other end of the clamping bed.
  • the parts 2, 3 of the profile are placed in the glue clamping bed after gluing in the manner shown in FIG. 1 and the clamping device 27 is connected to the belts 3 by means of the nail plates 28 or via the pressure plates 34 and the load 32 is brought into effect .
  • the printing device 15 is activated so that the parts 2, 3 of the profile are aligned in the vertical direction and can no longer deflect.
  • the pressing device 13, 14 is put into operation and the profile 1 is laterally clamped, the clamping force being approximately three times the compressive force.
  • the printing cylinders 17 are then moved into their starting position, that is to say the carriage is released by the pressing device 16, so that it can be moved to a high-frequency device shown in FIG.
  • the HF device 19 has two upper electrodes 20 as hot electrodes and two lower electrodes 21 as cold electrodes, between which the profile 1 is moved by means of the carriage 8.
  • the electrodes are preferably under a spring force in the vertical and horizontal directions, so that, in conjunction with suitable spacers, a constant distance to the glue joint 24 (see FIG. 3) is ensured.
  • the uniform pressure can be ensured in a simple manner in that the electrodes 20 are connected to a holder 26 via a joint 25 sit, which in turn is under the action of a vertically arranged spring.
  • the position of the electrodes 20, 21 can thus also be adapted to different profile standards.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Civil Engineering (AREA)
  • Forests & Forestry (AREA)
  • Manufacturing & Machinery (AREA)
  • Structural Engineering (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Mechanical Coupling Of Light Guides (AREA)
  • Amplifiers (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
EP83103271A 1982-05-14 1983-04-02 Vorrichtung zur Herstellung von auf Biegung beanspruchten Bauelementen aus Holz Expired EP0102446B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83103271T ATE27978T1 (de) 1982-05-14 1983-04-02 Vorrichtung zur herstellung von auf biegung beanspruchten bauelementen aus holz.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3218134 1982-05-14
DE3218134A DE3218134C2 (de) 1982-05-14 1982-05-14 Verfahren und Vorrichtung zum Herstellen eines auf Biegung zu beanspruchenden Trägers aus Holz

Publications (2)

Publication Number Publication Date
EP0102446A1 EP0102446A1 (de) 1984-03-14
EP0102446B1 true EP0102446B1 (de) 1987-06-24

Family

ID=6163552

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83103271A Expired EP0102446B1 (de) 1982-05-14 1983-04-02 Vorrichtung zur Herstellung von auf Biegung beanspruchten Bauelementen aus Holz

Country Status (8)

Country Link
US (1) US4500378A (da)
EP (1) EP0102446B1 (da)
AT (1) ATE27978T1 (da)
CA (1) CA1204043A (da)
DE (1) DE3218134C2 (da)
DK (1) DK152686C (da)
FI (1) FI71971C (da)
NO (1) NO831668L (da)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8401393A (nl) * 1984-05-02 1985-12-02 Houthandel V H T C Groot B V Werkwijze en inrichting voor het vervaardigen van een samengestelde voorgespannen houten balk.
FI74239C (fi) * 1985-08-14 1988-01-11 Artlog Oy Foerfarande foer framstaellning av kroekta laminatytor genom limning.
US4637194A (en) * 1985-12-10 1987-01-20 James Knowles Wood beam assembly
US4745718A (en) * 1986-05-30 1988-05-24 Trus Joist Corporation Prestressed structural support and method for making same
US6105321A (en) * 1998-10-19 2000-08-22 Karisallen; Kenneth James Prestressed wood composite laminate

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2039398A (en) * 1934-10-11 1936-05-05 Edward R Dye Prestressed beam and method of manufacture
EP0048812A1 (de) * 1980-09-30 1982-04-07 Casimir Kast GmbH & Co. KG Vorrichtung zum Verleimen von Holzprofilen

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2574920A (en) * 1942-09-10 1951-11-13 Us Plywood Corp Apparatus for making plywood tubing
US3000429A (en) * 1956-06-22 1961-09-19 Studebaker Packard Corp Machine for prestressing and molding reinforced plastic members
GB969843A (en) * 1962-07-24 1964-09-16 Kalley Timber Dev Corp Proprie Improvements in or relating to the manufacture of glued laminated timber products
DE1952920A1 (de) * 1968-10-22 1970-05-06 Werner Zahlmann Verfahren zur Herstellung von Platten,Brettern od.dgl. auf Grundlage von Holz
US3605360A (en) * 1969-04-24 1971-09-20 Skuli Walter Lindal Prestressed vertically laminated beam of wood
BE748846A (fr) * 1969-04-24 1970-09-16 Lindal Skuli W Poutre en bois precontrainte, a couches horizontales, en couches de bois et de metal, et methode pour sa
DE1921594A1 (de) * 1969-04-28 1970-11-05 Hombak Maschinenfab Kg Presse zur Stirnholzverleimung
US3783066A (en) * 1971-09-29 1974-01-01 R Myers Reinforced structural member of fiber glass and method of making the same
BE777891A (fr) * 1972-01-10 1972-05-02 Lipski Raphael Poutre a armature rigide pre-tiree.
US4356045A (en) * 1980-05-30 1982-10-26 St. Regis Paper Company Complete production line of wood I-joist manufacturing apparatus the method of manufacture, and the I-joist product, having lumber chords and a plywood web
US4378263A (en) * 1981-01-26 1983-03-29 Logan Robert M Method and apparatus for making a composite material truss
AT369085B (de) * 1981-07-22 1982-12-10 Reiffenstuhl Hans Dipl Ing Dr Holztraeger mit auf zug und druck vorgespannten bewehrungen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2039398A (en) * 1934-10-11 1936-05-05 Edward R Dye Prestressed beam and method of manufacture
EP0048812A1 (de) * 1980-09-30 1982-04-07 Casimir Kast GmbH & Co. KG Vorrichtung zum Verleimen von Holzprofilen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DIN 1052, Okt.1969, Tabelle 9 - "bauen mit Holz" Heft 11, 1980, S.670-672 *

Also Published As

Publication number Publication date
DK152686C (da) 1988-08-29
DK214883A (da) 1983-11-15
FI71971B (fi) 1986-11-28
FI831611A0 (fi) 1983-05-10
NO831668L (no) 1983-11-15
FI831611L (fi) 1983-11-15
ATE27978T1 (de) 1987-07-15
DE3218134A1 (de) 1983-12-15
DK152686B (da) 1988-04-18
FI71971C (fi) 1987-03-09
EP0102446A1 (de) 1984-03-14
US4500378A (en) 1985-02-19
CA1204043A (en) 1986-05-06
DK214883D0 (da) 1983-05-13
DE3218134C2 (de) 1985-04-25

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