EP0393384B1 - Dispositif pour assembler du placage - Google Patents

Dispositif pour assembler du placage Download PDF

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Publication number
EP0393384B1
EP0393384B1 EP90105646A EP90105646A EP0393384B1 EP 0393384 B1 EP0393384 B1 EP 0393384B1 EP 90105646 A EP90105646 A EP 90105646A EP 90105646 A EP90105646 A EP 90105646A EP 0393384 B1 EP0393384 B1 EP 0393384B1
Authority
EP
European Patent Office
Prior art keywords
pressure
transport
drive shaft
disposed
shell
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 - Lifetime
Application number
EP90105646A
Other languages
German (de)
English (en)
Other versions
EP0393384A1 (fr
Inventor
Hans-Heinrich Kuper
Theo Grönebaum
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
Publication of EP0393384A1 publication Critical patent/EP0393384A1/fr
Application granted granted Critical
Publication of EP0393384B1 publication Critical patent/EP0393384B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • Y10T156/17—Surface bonding means and/or assemblymeans with work feeding or handling means
    • Y10T156/1702—For plural parts or plural areas of single part
    • Y10T156/1712—Indefinite or running length work
    • Y10T156/1715—Means joining indefinite length work edge to edge

Definitions

  • the invention relates to a device for assembling veneers with a plurality of transport rollers arranged on a drive shaft and at least one counter-pressure roller arranged parallel to this, a heating device and a pressing device.
  • a device for assembling veneers with a plurality of transport rollers arranged on a drive shaft and at least one counter-pressure roller arranged parallel to this, a heating device and a pressing device.
  • Such a device is known from DE-A-2 523 110.
  • Another similar device is known from DE-A-34 09 178.
  • Devices of this type are used to glue individual veneers or strips of veneer lengthwise to one another in order to produce a large-area veneer sheet. Since the veneer workpieces to be processed later have large, but very thin sheets, it is necessary to position the individual veneers exactly against each other before the gluing takes place. It is necessary to position the edges to be glued exactly relative to each other over their entire length. It is known from the prior art to use a stop for this purpose, against which the individual veneer strips are conveyed. Particularly in the case of wavy veneer strips or conveyed at an angle to the direction of gluing, it is associated with considerable difficulties or in many cases completely impossible in the known machines to position the veneers.
  • Another veneer gluing machine is known from DE-C-747 289.
  • driving shafts of rotating belts or chains for feeding veneers are provided with slip clutches.
  • the slip clutches can be designed, for example, as sprockets.
  • the invention has for its object to provide a device of the type mentioned which, with a simple structure and reliable operability, ensures transport and alignment of even the thinnest veneers with uneven longitudinal edges so that the longitudinal edges are aligned transversely to the direction of flow in a desired gluing direction can.
  • the device according to the invention is distinguished by a number of considerable advantages. Due to the possibility of changing the diameter of an internal drive device, it is possible on the one hand to vary the contact pressure in the glue joint against the previous veneer sheets according to the respective requirements, and on the other hand to vary this contact pressure if veneers of varying thickness or different friction values are to be processed. According to the invention, the possibility of changing the diameter and allowing slippage, for example by means of a slip clutch, also leads to different conveying speeds or paths of the individual areas of the veneer or of the veneer sheet, so that veneers inserted obliquely or obliquely are aligned in a particularly simple manner can.
  • this transport and pressure roller is surrounded by an outer jacket made of an elastic material, which is held by means of a cylindrical carrier body inserted into the transport and pressure roller.
  • the transport and pressure roller is constructed in such a way that it receives a support cylinder with a central recess for carrying out a shaft and that in at least one area of the support cylinder a recess for transmitting the pressure of the pressure fluid to one acting on the jacket from the inside is preferred curved pressure plate is formed.
  • the invention provides that the support cylinder has an inner elastic hose in the region of the recess takes up, the inner wall of which can be acted upon by the pressure fluid.
  • the hose thus serves on the one hand to seal and on the other hand to evenly transmit the pressure applied by the pressure fluid.
  • the hose extends only over part of the length of the support cylinder. This opens up the possibility of arranging a plurality of such hose sections on a transport and pressure roller and pressurizing them individually separately, so that different contact pressures and different circumferential speeds can be achieved even when using only a single, continuous or sectioned transport and pressure roller .
  • the invention can also be applied to individual transport and pressure rollers which can be of any length. According to the invention, it is thus possible to align veneers with relatively short adhesive areas and to position them precisely.
  • the pressure fluid is preferably supplied through the shaft, it being possible for the shaft to have at least one central recess for the passage of the pressure fluid, which is connected to at least one radial recess of the shaft, which is in the space between the each hose section and the shaft opens.
  • the device according to the invention thus allows the longitudinal edges of the individual veneers or veneer sheets to be glued to be aligned exactly with one another, in particular in a line transverse to the transport direction, this being possible both in the case of straight-line and also in the case of corrugated or serrated connecting areas of veneers. So you can According to the invention, veneer sheets with uniform or beveled cut edges can also be positioned precisely and securely and connected to one another.
  • a device according to the invention has, in addition to the usual devices, which are known, for example, from a device according to DE-OS 26 14 216, to which reference is hereby made, a stationary table (23) and an upper pressure stamp (24).
  • a counter-pressure roller (12) is mounted in / on the upper pressure stamp (24) and a transport and pressure roller (11) in the lower table (23).
  • the pressure stamp (24) can be moved in the vertical direction in order to convey or clamp a veneer introduced in the transport direction A.
  • the table (23) and the pressure stamp (24) each have a heating device (25, 26), each of which, alone or together, can also be moved relatively vertically, so that they rest in the seam area of the veneers in contact with a veneer sheet (not shown) can be moved to carry out the gluing by means of pressure and heat.
  • an inlet conveyor belt (29) on which the veneer strips to be glued are fed.
  • An outlet conveyor belt (30) connects to the outlet side of the table (23) in an analogous manner in order to remove the veneer sheets glued together.
  • the press roller (12) is mounted on a shaft (31) and connected to it via a toothing or the like.
  • the shaft (31) is connected (in a manner not shown) to a drive, so that, as shown, it can be rotated clockwise.
  • the transport and pressure roller (11) is mounted on the table (23) and is also driven by a drive, not shown.
  • the device according to the invention for assembling veneers works in the usual way.
  • a wide glued veneer sheet is held by means of the brake stamp (27), whereby additional stop pins (32), which are mounted on the table (23), can be moved upwards in order to hold the veneer sheet or to position its rear edge exactly.
  • a veneer is then fed via the infeed conveyor belt (29) and the transport and pressure roller (11), which, after the stop elements (32) have been removed from the transport path, is brought into contact with the veneer sheet already present.
  • the upper pressure stamp (24) is moved downwards in order to press the incoming veneer and the previous veneer sheets, the previous veneer being firmly clamped in by the brake stamp (27) and the heating devices (25, 26) being pressed lightly on the veneers or the subsequent veneer sheet form a shaft.
  • the following veneer is pressed firmly against the previous veneer sheet by the transport and pressure roller (11) and counter-pressure rollers (12).
  • the upper and lower heating devices (25, 26) are activated with pressure and heat in order to bond the adhesive applied to the adhesive edge of the new veneer to the other veneer sheet when the new veneer is transported to it.
  • the necessary contact pressure between the veneers is generated and maintained by the transport and pressure roller (11) and the associated counter-pressure roller (12). After a predetermined exposure time, the interconnected veneer sheets are released and transported onward.
  • Fig. 2 is a side view of the transport and pressure roller (11) according to the invention and the associated driven counter-pressure roller (12) is shown.
  • the counter-pressure roller (12) is constructed in the usual way, so that a further description is unnecessary.
  • the transport and pressure roller (11) is formed from individual roller sections, each of which has an outer jacket (13) which is designed in the form of a cylinder jacket and consists of a rough material such as hard rubber.
  • This jacket (13) is carried by an inner carrier body (14) made of metal, which is also designed in the form of a cylinder jacket and has a central bore through which a support cylinder (17) with an inner shaft (16) is passed.
  • This shaft (16) is connected in a manner not shown to a lateral drive and has an inner bore (15) through which a pressure medium such as compressed air can be supplied.
  • the outer circumference of the jacket (13) shows a high coefficient of friction to ensure the transport and pressing of a veneer in a safe manner.
  • each carrier body (14) which forms only a short roller (50 - 100 mm) with the jacket (13), a support cylinder (17) is mounted, which has several parallel elongated recesses (18 ), the end areas of which are rounded and have smooth wall surfaces sloping inwards from the outside.
  • each of these recesses (18) there is a curved, removable pressure plate (19), which has an outer covering (20). made of a material such as hard rubber with a high coefficient of friction.
  • This outer coating (20) of the pressure plate (19) rests against the smooth support body (14) of the casing (13) and, with its friction surface, has the task, on the one hand, of taking the casing (13) with it at the same rotational speed or one under slip and contact pressure Allow relative movement, provided that the jacket (13) receives a lower rotational speed due to the fact that a veneer entrained by the jacket (13) encounters resistance (like the edge of a previous veneer sheet).
  • the frictional force occurring between the outer friction surface of the lining (20) of the pressure plate (19) and the surrounding smooth inner wall of the cylindrical support body (14) is controlled by the elastic wall of a hose (21) which is in sections within all the support cylinders (17) lying next to one another has moved in and is preferably under the pressure of a pressure medium compressed air.
  • This elastic hose (21) which extends in individual sections over the entire length of the shaft (16) or preferably almost only over the length of a support cylinder (17), consists for example of a plastic and is fully acted upon by a pressure medium on its inside which is guided through a central longitudinal bore (15) in the shaft (16) via the radial transverse channels (22) (cf. Fig. 5) to the hose (21) and has a static effect.
  • the pressure medium presses the flexible hose (21) into this recess (18) in such a way that the narrow, exposed pressure plate (19) moves outwards and with its covering (20) presses against the inner wall of the cylindrical support body (14) and thereby - depending on the Pressure of the pressure medium (e.g. 3 - 6 bar) - there builds up a more or less large friction force.
  • the pressure medium e.g. 3 - 6 bar
  • Radial grub screws (33) are used for the positive connection between the shaft (16) and the respective support cylinder (17).

Landscapes

  • 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)
  • Rollers For Roller Conveyors For Transfer (AREA)

Claims (13)

  1. Dispositif pour assembler des feuilles de placage
    - comportant plusieurs rouleaux de transport et de pressage (11) disposés sur un arbre d'entrainement (16) et entrainés;
    - comportant au moins un cylindre (12) de contre-pression disposé parallèlement à ceux par lesquels les feuilles de placage sont amenées à travers un organe de pressage (24), les rouleaux de transport et de pressage (11) étant disposés de façon à appuyer sur les feuilles de placage directement et sans interposition de chaînes, bandes du analogues;
    - comportant un dispositif de chauffage (25, 26);
    - les rouleaux de transport et de pressage (11) présentant chacun une enveloppe (13),
       caractérisé
    - par le fait qu'entre chaque enveloppe (13) et l'arbre d'entraînement (16) est dispose un coupleur à friction qui relie, par serrage en pression, l'enveloppe (13) avec l'arbre d'entrainement (16),
    - par le fait que le coupleur à friction présente un cylindre d'appui (17) qui est disposé entre l'arbre d'entrainement intérieur (16) et une pièce intérieure (14) support de l'enveloppe (13) et qui présente des évidements (18) dans chacun desquels est disposée une plaquette de pression (19) mobile en direction radiale et maintenue sous la pression d'un fluide sous pression, et
       par le fait que sur la face intérieure du cylindre d'appui (17) est fixé, pour l'étanchéité des évidements (18), un tuyau élastique (21) qui coopère avec les plaquettes de pression (19) sous l'action du fluide sous pression.
  2. Dispositif selon la revendication 1, caractérisé par le fait que l'enveloppe (13) du rouleau de transport et de pressage comporte une couche extérieure de matériau plus dur qui présente un certain coefficient de frottement et qui s'appuie sur une pièce support intérieure (14), de forme cylindrique, en métal ou analogue, qui y est fixée.
  3. Dispositif selon l'une des revendications 1 ou 2, caractérisé par le fait que l'enveloppe (13) avec la pièce support (14), est montée sur le cylindre d'appui intérieur (17) avec liberté de rotation.
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé par le fait que la plaquette de pression (19) est de forme incurvée vers l'extérieur.
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé par le fait que la plaquette de pression (19) présente une couche de frottement extérieure (20) et une couche d'appui intérieure.
  6. Dispositif selon l'une des revendications 1 à 5, caractérisé par le fait que l'arbre d'entrainement (16) présente un perçage longitudinal central (15) et des perçages radiaux (22) d'amenée qui en dérivent et débouchent dans un espace intermédiaire entre la surface de l'arbre d'entrainement (16) et le tuyau élastique (21).
  7. Dispositif selon l'une des revendications 1 à 6, caractérisé par le fait que les espaces intermédiaires entre les portions du tuyau (21) sont rendues étanches au fluide sous pression par rapport à la surface de l'arbre d'entraînement (16) latéralement l'un par rapport à l'autre.
  8. Dispositif selon l'une des revendications 1 à 7, caractérisé par le fait que le rouleau de transport et de pressage est constitué de plusieurs rouleaux individuels qui sont disposés l'un à côté de l'autre et sont maintenus séparés l'un de l'autre au moyen de bagues d'écartement (24) qui s'appuient sur l'arbre d'entrainement (16).
  9. Dispositif selon l'une des revendications 1 à 8, caractérisé par le fait que chaque portion du tuyau (21) s'étend sur la zone médiane d'une portion du rouleau.
  10. Dispositif selon l'une des revendications 1 à 9, caractérisé par le fait que sur la périphérie du cylindre d'appui (17) plusieurs évidements longitudinaux parallèles (18) sont disposés à égale distance l'un de l'autre.
  11. Dispositif selon l'une des revendications 1 à 10, caractérisé par le fait que les évidements longitudinaux (18) du cylindre d'appui (17) présentent des surfaces de paroi inclinées s'ouvrant vers l'extérieur.
  12. Dispositif selon l'une des revendications 1 à 11, caractérisé par le fait que les plaquettes de pression (19) présentent des surfaces de paroi latérale de même inclinaison que les surfaces de paroi des évidements longitudinaux (18).
  13. Dispositif selon l'une des revendications 1 à 12, caractérisé par le fait que chaque plaquette de pression amovible (19) présente un revêtement extérieur formant couche de friction (20) constitué d'un matériau comme du caoutchouc dur à coefficient de frottement élevé.
EP90105646A 1989-03-28 1990-03-24 Dispositif pour assembler du placage Expired - Lifetime EP0393384B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8903793U DE8903793U1 (de) 1989-03-28 1989-03-28 Vorrichtung zum Zusammensetzen von Furnieren
DE8903793U 1989-03-28

Publications (2)

Publication Number Publication Date
EP0393384A1 EP0393384A1 (fr) 1990-10-24
EP0393384B1 true EP0393384B1 (fr) 1994-08-17

Family

ID=6837580

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90105646A Expired - Lifetime EP0393384B1 (fr) 1989-03-28 1990-03-24 Dispositif pour assembler du placage

Country Status (7)

Country Link
US (1) US5230766A (fr)
EP (1) EP0393384B1 (fr)
JP (1) JPH0332802A (fr)
DE (2) DE8903793U1 (fr)
DK (1) DK0393384T3 (fr)
ES (1) ES2062144T3 (fr)
FI (1) FI93325C (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19904438C1 (de) * 1999-02-04 2000-05-25 Holzindustrie Bruchsal Gmbh Furnierzusammensetzmaschine
JP2002371494A (ja) * 2002-03-11 2002-12-26 Daiki:Kk 衛生用紙
US20060275241A1 (en) * 2005-06-06 2006-12-07 Unilever Home & Personal Care Usa, Division Of Conopco, Inc. Cosmetic towelette product
DE102016210552B3 (de) * 2016-06-14 2017-08-31 Heinrich Kuper Gmbh & Co Kg Vorrichtung zum Zusammensetzen von Furnierstreifen zu einem Flächengebilde
CN111702888B (zh) * 2020-07-01 2024-10-15 嘉兴恒通木业有限公司 一种半自动木质单板拼接设备

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE747289C (de) * 1938-10-05 1944-09-18 Alfred Pahl Furnierfugen-Leimmaschine fuer duenne Furniere
US2331743A (en) * 1942-05-23 1943-10-12 Marathon Paper Mills Co Roll spindle
CH265909A (de) * 1944-06-06 1949-12-31 Fischer Schmutz Adolf Füge- und Verleimmaschine für Flachmaterial.
GB745453A (en) * 1953-06-25 1956-02-29 Gerardus Johannes Maria Kok Improvements in or relating to the edgewise joining of sheets
DE1292958B (de) * 1962-12-01 1969-04-17 Saueressig Kg Geb Walze, insbesondere Druckereiwalze fuer den Textil- und Papierdruck
FR1388085A (fr) * 1963-12-27 1965-02-05 Burton Fils Ets Rouleau commandé fou
FR1576917A (fr) * 1967-08-17 1969-08-01
US3510082A (en) * 1967-11-24 1970-05-05 Arthur T Williams Pneumatic chuck
US3540567A (en) * 1968-09-25 1970-11-17 Potlatch Forests Inc Biasing and indexing apparatus for sheet conveyor assembly
DE2523110C3 (de) * 1975-05-24 1978-04-06 Erwin 7291 Aach Haug Furnierzusammensetzmaschine
GB1546778A (en) * 1975-06-10 1979-05-31 Agfa Gevaert Rotatable pressure means with adjustable pressure length
FR2537102A1 (fr) * 1982-12-01 1984-06-08 Gallet Sa Convoyeur a rouleaux entraines par une bague de friction
US4461430A (en) * 1983-03-01 1984-07-24 Louis Lever Differential winding air shaft
CH659617A5 (de) * 1983-05-04 1987-02-13 Fischer Ag Brugg Georg Einrichtung zum zusammensetzen und verbinden von flaechigen werkstuecken.
NL8303102A (nl) * 1983-09-07 1985-04-01 Het Noorden Ingbureau Lamineerinrichting.
FI75407C (fi) * 1986-11-21 1988-06-09 Valmet Oy Foerfarande i en boejningsreglerad vals och valsanordning foer tillaempning av foerfarandet.
EP0384173B1 (fr) * 1986-11-29 1992-07-22 Eduard Küsters Maschinenfabrik GmbH & Co. KG Elément d'étanchéité pour un rouleau à pression réglable le long d'une ligne
FR2616140A1 (fr) * 1987-06-05 1988-12-09 Achard Picard Jean Arbre expansible et retractable notamment pour le serrage de mandrins recevant des materiaux en bande
DE3723385A1 (de) * 1987-07-15 1989-01-26 Siemens Ag Wellendrehvorrichtung mit hydromechanischer ueberholkupplung

Also Published As

Publication number Publication date
JPH0332802A (ja) 1991-02-13
ES2062144T3 (es) 1994-12-16
EP0393384A1 (fr) 1990-10-24
FI93325C (fi) 1995-03-27
FI901152A0 (fi) 1990-03-07
US5230766A (en) 1993-07-27
DK0393384T3 (da) 1994-11-14
DE59006807D1 (de) 1994-09-22
FI93325B (fi) 1994-12-15
DE8903793U1 (de) 1990-07-26

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