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WO2006048099A1 - Dispositif et procede pour relier des elements fins et plans - Google Patents

Dispositif et procede pour relier des elements fins et plans Download PDF

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Publication number
WO2006048099A1
WO2006048099A1 PCT/EP2005/010940 EP2005010940W WO2006048099A1 WO 2006048099 A1 WO2006048099 A1 WO 2006048099A1 EP 2005010940 W EP2005010940 W EP 2005010940W WO 2006048099 A1 WO2006048099 A1 WO 2006048099A1
Authority
WO
WIPO (PCT)
Prior art keywords
waveguide
microwaves
flat elements
adhesive
reflector
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.)
Ceased
Application number
PCT/EP2005/010940
Other languages
German (de)
English (en)
Inventor
Carsten Runge
Horst Linn
Jürgen Suhm
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.)
Heinrich Kuper GmbH and Co KG
Original Assignee
Heinrich Kuper 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.)
Filing date
Publication date
Application filed by Heinrich Kuper GmbH and Co KG filed Critical Heinrich Kuper GmbH and Co KG
Priority to DE502005004541T priority Critical patent/DE502005004541D1/de
Priority to EP05796324A priority patent/EP1807248B1/fr
Publication of WO2006048099A1 publication Critical patent/WO2006048099A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/70—Feed lines
    • H05B6/707—Feed lines using waveguides
    • H05B6/708—Feed lines using waveguides in particular slotted waveguides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
    • B27D1/10—Butting blanks of veneer; Joining same along edges; Preparatory processing of edges, e.g. cutting
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/70—Feed lines
    • H05B6/705—Feed lines using microwave tuning
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/64—Heating using microwaves
    • H05B6/78—Arrangements for continuous movement of material

Definitions

  • the invention relates to an apparatus and a method for connecting thin, flat elements, such as e.g. Veneer strips, on their edges, in order to produce a larger flat element.
  • thin, flat elements such as e.g. Veneer strips
  • Veneer splicing machines or butt gluing machines are known from the prior art in various configurations.
  • wood veneers are glued together on their narrow sides.
  • the veneer strips are elongated strips, which are provided with glue at the edges and then glued in the machines.
  • the individual veneer strips are introduced into the machine by means of a transport system and joined together at the abutting edges which are wetted with glue.
  • pressure is exerted on the joint between the individual veneer strips and, on the other hand, the adhesive is usually cured by heat.
  • the heat is generated by electrical resistance heaters and given off to so-called slide rails.
  • the slide rails are equipped with a non-stick coating so that the adhesive does not stick to them.
  • the task of the slide rails is in the formation of joints on the one hand to transport the heat into the adhesive and the adjacent joint area and on the other hand to keep the veneers flat. Since not only the adhesive joints but also the areas around the joints are heated by the heat transfer from the heating rails, this can lead to partial drying and create tension in the veneer strips. As a result, the assembled veneers can have a wavy shape.
  • the device according to the invention for connecting thin, flat elements by means of an adhesive enables a quick and secure connection of the flat elements without other areas of the flat elements being hit by the microwaves.
  • the butt joint between two flat elements is guided past the slot, whereby microwaves can emerge from the slot in order to harden the adhesive.
  • the microwaves can be introduced into the butt joint to the adhesive without further areas of the flat elements are exposed to microwaves.
  • the thin, flat elements are preferably veneer strips, in particular made of wood, or plastic strips which are connected to one another on their long sides, in order, for example, to provide large-area veneers.
  • the waveguide preferably has a rectangular cross section.
  • the waveguide can be made particularly compact, so that accordingly an assembly machine can be as small as possible. This enables even narrow strips of veneer to be put together.
  • the waveguide with a rectangular cross section preferably has a ratio of the side lengths of 1 to 4. It has been found here that an inner cross section of the rectangular waveguide of 21.6 mm ⁇ 86.4 mm is particularly advantageous.
  • the microwaves are preferably generated at a frequency of approximately 2.45 GHz.
  • a device for generating microwaves can be, for example, a magnetron.
  • the thin, planar elements lie at least partially on the waveguide during the passage through the machine.
  • a rectangular design of the waveguide is also advantageous, since the flat elements can then lie directly on the outside of the waveguide.
  • the thin, flat elements are preferably continuously guided past the slot or slots of the waveguide.
  • a plurality of slots are formed in the waveguide, which are arranged on a line.
  • the abutting edge of two flat elements to be connected can be guided in the longitudinal direction over the slots.
  • Crosspieces are always formed between the individual slots, at which the microwaves cannot escape.
  • the plurality of slots is formed in such a way that preferably adjacent slots are each at the same distance from one another.
  • a standing wave of microwaves is particularly preferably generated in the waveguide and the slits are each arranged in the area of the standing wave where the maximum radiation takes place. This enables the adhesive to be cured particularly quickly.
  • the device comprises a reflector which is arranged opposite the waveguide on the side of the waveguide on which the at least one slot is arranged.
  • the flat elements between the waveguide and the reflector are thus guided through the device.
  • the reflector is used to receive and reflect microwaves exiting through the slots in the waveguide, as a result of which the efficiency of the device according to the invention is significantly improved can. This also prevents problems from occurring due to microwaves emerging from the area of the butt joint.
  • the reflector is preferably also designed as a hollow conductor with slots, the slots in the reflector being formed at the positions at which the slots are formed in the waveguide.
  • the slots in the waveguide and in the reflector lie opposite one another. Microwaves which emerge through a slot in the waveguide are thus caught and reflected by the slot in the reflector and emitted again through the slot in the reflector.
  • the shape of the reflector preferably corresponds to the shape of the waveguide.
  • the reflector is further preferably formed with a flat plane in which the slots are arranged and the reflector is pressed onto the flat elements with a predetermined force.
  • the predetermined force is selected such that the flat elements can still be passed between the reflector and the waveguide.
  • Sliding tuning elements are further preferably arranged in the waveguide and / or in the reflector, in order to enable the course of the microwaves in the waveguide and / or in the reflector to be changed.
  • the tuning element is preferably a slide with a plate through which the length of the waveguide can be changed. This makes it possible, in particular, to fine tune the standing wave in the waveguide or in the reflector, in order to enable optimal coupling of microwaves through the slots.
  • a cover element is preferably arranged between the flat elements and the waveguide and between the flat elements and the reflector.
  • the cover element is made of a material which does not absorb microwaves or only absorbs it to a small extent.
  • the covering element is preferably a flexible masking tape or a Teflon plate or a quartz glass plate.
  • the cover plates are preferably detachably connected to the waveguide or the reflector.
  • the flat elements between the cover plates are thus guided through the machine according to the invention.
  • the device according to the invention is particularly preferably a veneer splicing machine and the thin, flat elements are preferably veneer strips.
  • the veneer strips can be made of wood or plastic.
  • the microwaves are guided in a waveguide and are coupled out of the waveguide via at least one slot formed in the waveguide.
  • the slots in the waveguide are arranged in such a way that they meet the butt joint provided with adhesive between two flat elements.
  • the planar elements are guided along the slots at their butt joint until the adhesive is cured by the microwaves emerging from the slots.
  • the flat elements are preferably veneer strips made of wood or plastic.
  • the flat elements are particularly preferably continuously guided past the slots.
  • FIG. 1 is a schematic, perspective view of a machine according to the invention for connecting thin, flat elements to one another at a butt edge and
  • Fig. 2 is a schematic sectional view through the machine shown in Fig. 1.
  • a veneer splicing machine according to an embodiment of the invention is described below with reference to FIGS. 1 and 2.
  • the veneer splicing machine 1 comprises a magnetron 2 for generating microwaves.
  • the microwaves generated in the magnetron 2 are conducted into a waveguide 3.
  • the waveguide 3 goes vertically upwards starting from the magnetron 2 and then bends at an angle of 90 ° to it.
  • the veneer splicing machine 1 comprises a reflector 6, which is arranged opposite the waveguide 3.
  • a transport system 9 comprises several gear wheels 9b and several revolving chain elements 9a.
  • the transport system 9 is only shown schematically in FIGS. 1 and 2 and is driven by means of an electric motor.
  • the transport system 9 serves to lead two veneers 12a, 12b through the machine.
  • the veneers 12a, 12b are transported by an upper and lower chain element 9a.
  • the reflector 6 is arranged directly above the waveguide 3.
  • a plurality of slots 4 are formed in the waveguide 3 and a plurality of slots 7 are formed in the reflector 6.
  • five slots 7 are formed in the reflector 6 in this embodiment.
  • five slots 4 are formed in the waveguide 3.
  • the waveguide 3 and the reflector 6 are constructed identically and have the same dimensions.
  • the waveguide 3 and the reflector 6 are arranged relative to one another in such a way that the slots 4 of the waveguide 3 and the slots 7 of the reflector 6 are each positioned opposite one another.
  • the slots 4 and 7 have a width of approximately 5 mm and a length of approximately 60 mm.
  • the distances between adjacent slots in the reflector or in the waveguide 3 are the same.
  • the inner dimensions of the waveguide 3 and the reflector 6, as can be seen from FIG. 2, are formed in a ratio of A: B of 1: 4. More precisely, the inner width A of the waveguide 3 is 21.6 mm and the inner height B of the waveguide is 86.4 mm.
  • the internal dimensions of the reflector 6 are identical to those of the waveguide 3.
  • the waveguide 3 comprises a tuning slide 5 in order to fine-tune the position of the electromagnetic fields in the waveguide 3.
  • the tuning slide 5 comprises a plate 5a, a rod 5b and a handle 5c and is operated manually.
  • the reflector 6 also comprises a tuning slide 8, which has a plate 8a, a rod 8b and a handle 8c. By changing the position of the plate 5a or 8a, a displaceable rear wall results for the waveguide 3 and the reflector 6, so that a fine tuning of the electromagnetic fields in the hollow areas is possible.
  • the kidney composing machine 1 also has a lower cover plate 10 and an upper cover plate 11.
  • the cover plates 10 and 11 are elongated plates which cover the slots 4 in the waveguide 3 and the slots 7 in the reflector 6. This prevents the slots, in particular at their edges, from receiving adhesive which can adhere there due to the drawing of the veneers 12a, 12b into the machine.
  • the cover plates 10, 11 are also indicated schematically in FIG. 1.
  • the arrow X in FIG. 1 denotes the direction in which the veneers 12a and 12b are inserted into the machine 1.
  • the veneers are inserted next to each other in parallel 12a and 12b, wherein, 12b each adhesive was applied to the mutually facing edges of the veneers 12a, so that provided between the veneers 12a, 12b ei ⁇ ne adhesive butt joint is formed.
  • the veneers 12a, 12b are drawn into the machine and moved by the transport system 9 in the direction of the arrow X such that the butt joint 13 lies directly between the slots 4 in the waveguide 3 and the slots 7 located in the reflector 6.
  • the cover plates 10 and 11 are made of a material which does not or only to a small extent absorb microwaves.
  • the cover plates 10, 11 are made from a quartz glass or from Teflon.
  • the material from which the waveguide 3 or the reflector 6 is made, on the other hand, is selected such that the microwaves cannot pass through.
  • the function of the veneer splicing machine 1 is as follows: The microwaves generated in the magnetron 2 are emitted into the waveguide 3 via an antenna. The microwaves are then Chen electrically conductive area of the waveguide 3 out. Microwaves can be coupled out of the waveguide 3 in the area of the slots 4. Since the slits 7 of the reflector 6 are arranged directly opposite the slits 4 of the waveguide 3, the reflector 6 can collect the microwaves that have emerged from the waveguide 3 but are not absorbed by the adhesive in the butt joint 13 and re-use them ⁇ inflect.
  • the veneer strips 12a and 12b are wetted on the edges at which they are to be glued together with an adhesive which can be hardened by means of microwaves.
  • the veneer strips 12a and 12b are then pressed together at the adhesive edges by lateral pressure and inserted together into the machine.
  • the compression process can also take place simultaneously with the introduction of the individual veneer strips 12a, 12b into the machine.
  • the veneer strips 12a, 12b are then completely drawn into the machine by the transport system 9 and passed through the machine in the direction of arrow X.
  • the initial state of carrying out the veneer strips 12a, 12b is shown in FIG. 1.
  • the veneer strips 12a, 12b are guided through the machine in such a way that the butt joint 13 provided with adhesive is arranged directly above the slots 4 in the waveguide 3 or below the slots 7 in the reflector 6 (see FIG. 2). .
  • the wall of the waveguide 3, in which the slots 4 are formed, serves as the support surface 3a.
  • the reflector 6 is movably suspended and can be pressed onto the veneer strips 12a, 12b with a force F such that the reflector wall in which the slots 7 are formed acts as a pressure surface 6a.
  • the veneer strips 12a, 12b can be passed through the machine flush and without offset.
  • the force F is selected such that the veneer strips 12a, 12b are not damaged and can be passed through the machine.
  • microwaves are coupled out through the slots 4 and are absorbed by the adhesive in the butt joint 13, as a result of which the adhesive hardens.
  • the non-absorbed exited microwaves enter the reflector 6 via the slits 7 and are reflected by the latter and can also exit again through the slits 7 and meet the adhesive in the butt joint 13 and further harden the adhesive. Due to the shape of the waveguide 3, the microwaves are positioned to form a standing wave, the maxima of the microwaves being positioned in the area of the slots 4, so that the greatest possible energy can escape from the slots 4 in order to cure the adhesive.
  • the cover elements 10, 11 are made as thin as possible in order to enable the microwaves to act in a concentrated manner on the joint area in order to keep the microwave leakage radiation as small as possible.
  • a veneer splicing machine can be provided which enables veneer strips to be glued without damage from heating beams to the veneer strips or without uncontrolled exposure to microwave radiation on the veneer strips.
  • a reflector 6 arranged in mirror image, moreover, largely prevent microwaves from escaping from the area of the adhesive hard zone into the environment.
  • the microwaves can be used in a targeted manner and with the desired energy content to cure the adhesive.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Veneer Processing And Manufacture Of Plywood (AREA)
  • Connection Of Plates (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Abstract

La présente invention concerne un dispositif pour relier des éléments fins et plans (12a, 12b) au moyen d'un adhésif, comprenant une unité de transport (9) qui sert à transporter les éléments plans (12a, 12b) à travers le dispositif, et un système (2) qui sert à produire des micro-ondes destinées à faire durcir un adhésif appliqué sur les arêtes des éléments plans (12a, 12b). Le dispositif de l'invention se caractérise en ce que les micro-ondes sont acheminées dans un guide d'ondes (3) qui présente au moins une fente (4), l'ouverture de joint (13) des éléments plans (12a, 12b), qui présente l'adhésif, pouvant passer au voisinage de la fente (4) pour faire durcir l'adhésif au moyen des micro-ondes qui sortent de la fente (4). L'invention a également pour objet un procédé pour relier des éléments fins et plans.
PCT/EP2005/010940 2004-11-02 2005-10-11 Dispositif et procede pour relier des elements fins et plans Ceased WO2006048099A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE502005004541T DE502005004541D1 (de) 2004-11-02 2005-10-11 Vorrichtung und verfahren zum verbinden von dünnen, flächigen elementen
EP05796324A EP1807248B1 (fr) 2004-11-02 2005-10-11 Dispositif et procede pour relier des elements fins et plans

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004052871A DE102004052871A1 (de) 2004-11-02 2004-11-02 Vorrichtung und Verfahren zum Verbinden von dünnen, flächigen Elementen
DE102004052871.3 2004-11-02

Publications (1)

Publication Number Publication Date
WO2006048099A1 true WO2006048099A1 (fr) 2006-05-11

Family

ID=35478364

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/010940 Ceased WO2006048099A1 (fr) 2004-11-02 2005-10-11 Dispositif et procede pour relier des elements fins et plans

Country Status (4)

Country Link
EP (1) EP1807248B1 (fr)
AT (1) ATE399081T1 (fr)
DE (2) DE102004052871A1 (fr)
WO (1) WO2006048099A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107932685A (zh) * 2016-10-12 2018-04-20 辛北尔康普机器及成套设备有限责任公司 用于连续加热压制材料垫的连续式加热炉

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITRE20130028A1 (it) * 2013-04-17 2014-10-18 Inermax S R L Sistema emettitore di microonde
DE102014213526A1 (de) * 2014-07-11 2016-01-14 Homag Holzbearbeitungssysteme Gmbh Vorrichtung zur Erwärmung einer Funktionsschicht
DE102015122976A1 (de) * 2015-12-30 2017-07-20 Sig Technology Ag Vorrichtung und Verfahren zum Erhitzen von Zuschnitten und/oder Packungsmänteln und/oder Verpackungen aus Verbundmaterial durch Orientierungspolarisation
DE102018105385B4 (de) * 2018-03-08 2020-01-30 Siempelkamp Maschinen- Und Anlagenbau Gmbh Durchlaufofen und Anlage zur Herstellung von Holzwerkstoffplatten
DE102018105390B4 (de) * 2018-03-08 2020-08-20 Siempelkamp Maschinen- Und Anlagenbau Gmbh Durchlaufofen und Anlage zur Herstellung von Holzwerkstoffplatten

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1340108A (fr) * 1961-12-05 1963-10-11 Patentverwertungs & Elektro Ho Dispositif de chauffage diélectrique de matières
DE19737593C1 (de) * 1997-08-28 1999-03-04 Kuper Heinrich Gmbh Co Kg Verfahren und Vorrichtung zum Verkleben von Furnierstreifen
US6287410B1 (en) * 1999-06-21 2001-09-11 Andrzej M. Klemarewski System and method for making compressed wood product
US6290809B1 (en) * 1997-05-03 2001-09-18 Maschinenfabrik J. Dieffenbacher Apparatus for the production of boards of wood-based material

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1062364B (de) * 1957-06-19 1959-07-30 Mikrowellen Ges M B H Deutsche Linearstrahler zur dielektrischen Erwaermung eines Gutes im Nahfeld
DE1085625B (de) * 1958-02-27 1960-07-21 Mikrowellen Ges M B H Deutsche Mikrowellenstrahler, vorzugsweise fuer Kantenverleimung
AT329163B (de) * 1973-09-05 1976-04-26 Siemens Ag Oesterreich Hochfrequenz-heizvorrichtung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1340108A (fr) * 1961-12-05 1963-10-11 Patentverwertungs & Elektro Ho Dispositif de chauffage diélectrique de matières
US6290809B1 (en) * 1997-05-03 2001-09-18 Maschinenfabrik J. Dieffenbacher Apparatus for the production of boards of wood-based material
DE19737593C1 (de) * 1997-08-28 1999-03-04 Kuper Heinrich Gmbh Co Kg Verfahren und Vorrichtung zum Verkleben von Furnierstreifen
US6287410B1 (en) * 1999-06-21 2001-09-11 Andrzej M. Klemarewski System and method for making compressed wood product

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107932685A (zh) * 2016-10-12 2018-04-20 辛北尔康普机器及成套设备有限责任公司 用于连续加热压制材料垫的连续式加热炉
CN107932685B (zh) * 2016-10-12 2020-09-18 辛北尔康普机器及成套设备有限责任公司 用于制造纤维板或刨花板的设备和方法

Also Published As

Publication number Publication date
DE102004052871A1 (de) 2006-05-04
ATE399081T1 (de) 2008-07-15
EP1807248A1 (fr) 2007-07-18
EP1807248B1 (fr) 2008-06-25
DE502005004541D1 (de) 2008-08-07

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