EP2902160A1 - Macchina per la bordatura di pannelli di legno o simili - Google Patents

Macchina per la bordatura di pannelli di legno o simili Download PDF

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Publication number
EP2902160A1
EP2902160A1 EP15153849.3A EP15153849A EP2902160A1 EP 2902160 A1 EP2902160 A1 EP 2902160A1 EP 15153849 A EP15153849 A EP 15153849A EP 2902160 A1 EP2902160 A1 EP 2902160A1
Authority
EP
European Patent Office
Prior art keywords
branch
recirculation
feeding
hot gas
machine according
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
Application number
EP15153849.3A
Other languages
German (de)
English (en)
Other versions
EP2902160B1 (fr
EP2902160A8 (fr
Inventor
Filippo Forlani
Roberto Saltarelli
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.)
Biesse SpA
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Biesse SpA
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Publication date
Application filed by Biesse SpA filed Critical Biesse SpA
Publication of EP2902160A1 publication Critical patent/EP2902160A1/fr
Publication of EP2902160A8 publication Critical patent/EP2902160A8/fr
Application granted granted Critical
Publication of EP2902160B1 publication Critical patent/EP2902160B1/fr
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27DWORKING VENEER OR PLYWOOD
    • B27D5/00Other working of veneer or plywood specially adapted to veneer or plywood
    • B27D5/003Other working of veneer or plywood specially adapted to veneer or plywood securing a veneer strip to a panel edge

Definitions

  • the present invention relates to a machine for edgebanding wood panels or the like.
  • the present invention relates to a machine for edgebanding wood panels or the like either with a finishing edge with no glue and defined by two overlapping layers of co-extruded plastic materials, or with a finishing edge provided with a layer of glue.
  • the machine comprises a support surface for at least one panel; an edgebanding assembly; and a feeding device to feed the panels in succession through the edgebanding assembly and to allow the edgebanding assembly itself to apply a finishing edge along at least part of the lateral profile of each panel.
  • the machine comprises, furthermore, a feeding device to feed a hot gas, in particular a hot gas under pressure, onto the finishing edge and/or onto the lateral profile of the panel, and to allow the connection between the finishing edge and the panel itself.
  • a feeding device to feed a hot gas, in particular a hot gas under pressure, onto the finishing edge and/or onto the lateral profile of the panel, and to allow the connection between the finishing edge and the panel itself.
  • the gas is heated up progressively by a plurality of heating devices, which are mounted in succession along the feeding device, and is directed onto the finishing edge and/or onto the lateral profile of the panel by means of an outlet nozzle provided with a shut-off valve.
  • the shut-off valve In the presence of the panel, the shut-off valve is arranged in a closing position, in which the hot gas is fed onto the finishing edge and/or onto the lateral profile of the panel through the outlet nozzle. In the absence of the panel, the shut-off valve is moved to an opening position, in which the hot gas is dispersed into the external environment.
  • numeral 1 indicates a machine for edgebanding wood panels 2 or the like, as a whole.
  • Each panel 2 has two main faces 3, which are parallel and opposite to one another, and is limited by a lateral profile 4, which extends between the two faces 3, and comprises, in the case in point, two minor lateral faces 5, which are parallel to one another and to a horizontal direction 6 and two minor lateral faces 7, which are parallel to one another and to a horizontal direction 8 that is perpendicular to direction 6 itself.
  • Machine 1 comprises a feeding device 9 of known type, which defines a substantially horizontal support surface P for the panels 2 and is configured to feed the panels 2 in succession in direction 6.
  • Machine 1 comprises, furthermore, an edgebanding assembly 10 configured to apply a finishing edge 11 onto the lateral profile 4 of panel 2.
  • edge 11 is an edge with no glue, defined by two overlapping layers of co-extruded plastic materials, and one of them is melted to allow the union of edge 11 with panel 2.
  • edge 11 is provided with a layer of glue, which is activated thermally to allow the union of edge 11 with panel 2.
  • Edge 11 is separated from the ribbon of a bobbin 12, and is stabilized on profile 4 by means of a pressure roller 13, which is mounted to rotate about its longitudinal axis 14, which is substantially vertical and parallel to a direction 15 that is orthogonal to directions 6 and 8.
  • assembly 10 comprises, furthermore, a feeding device 16 to feed a hot gas against edge 11, preferably but not necessarily a hot gas under pressure, in the case in point hot air under pressure.
  • Device 16 comprises an outlet nozzle 17, which is mounted between panel 2 and edge 11, has a plurality of distribution holes 18, and is connected with a known compressed air pneumatic device (not illustrated) by means of a feeding branch 19.
  • the air under pressure fed along branch 19 is heated up progressively by a plurality of heating devices 20 (in the case in point, three heating devices 20), which are mounted in succession along branch 19 itself.
  • Each device 20 has a tubular duct 21, which is crossed by the air, is provided with an internal electric resistor 22, and is connected with each adjacent duct 21 by the interposition of a tubular connector 23, which is mounted between the ducts 21.
  • the temperature of the hot air fed along branch 19 is measured by a plurality of temperature sensors 24, each inserted inside a respective connector 23.
  • nozzle 17 is provided with an electric resistor that is completely similar to the resistors 22, and with a temperature sensor that is completely similar to the sensors 24.
  • Device 16 comprises, furthermore, a recirculation branch 25, which extends downstream of nozzle 17 in a feeding direction 26 of the hot air along device 16, and comprises, in the case in point, a first segment 27 having an inlet that is connected to branch 19 by means of the interposition of a shut-off valve 28, and a second segment 29 facing nozzle 17 so as to cause the hot air fed through nozzle 17 itself to recirculate.
  • a recirculation branch 25 which extends downstream of nozzle 17 in a feeding direction 26 of the hot air along device 16 and comprises, in the case in point, a first segment 27 having an inlet that is connected to branch 19 by means of the interposition of a shut-off valve 28, and a second segment 29 facing nozzle 17 so as to cause the hot air fed through nozzle 17 itself to recirculate.
  • Branch 25 comprises, furthermore, an outlet duct 30, which connects the two segments 27, 29 to one another, extends through a heat exchanger 31, and communicates, downstream of exchanger 31 itself, with the external environment.
  • Exchanger 31 is mounted on branch 19 upstream of the heating devices 20 in direction 26, and allows the hot air fed along branch 25, that is to say both the hot air fed through nozzle 17 and the hot air fed through valve 28, to heat up the air under pressure fed along branch 19.
  • valve 28 In the presence of panel 2, valve 28 is moved to a closing position, in which the first segment 27 is closed to feed the hot air firstly through nozzle 17, then against edge 11, and finally along the second segment 29.
  • valve 28 In the absence of panel 2, valve 28 is moved to an opening position, in which the hot air is fed along the first segment 27.
  • the heat exchanger 31 is eliminated and the outlet duct 30 is connected with branch 19 upstream of the heating devices 20 in direction 26.
  • FIG 3 differs from that illustrated in figures 1 and 2 in that, in it, exchanger 31 is eliminated and the recirculation branch 25 is eliminated and replaced with a recirculation branch 32 comprising a recirculation manifold 33 having an inlet connected with branch 19 by means of valve 28 and, for each connector 23, a respective recirculation duct 34 configured to connect manifold 33 with connector 23 itself.
  • valve 28 is opened and the hot air fed downstream of nozzle 17 is recirculated again inside the feeding branch 19 at least through the ducts 34.
  • Each duct 34 is provided with a pressure adjusting device 35, which is configured to feed the hot air inside the relative connector 23 at a pressure that is at least equal to the pressure of the hot air in branch 19, and to prevent a return of the hot air along manifold 33 and to nozzle 17.
  • Manifold 33 is connected with branch 19 upstream of the heating devices 20 in direction 26, and is, furthermore, connected with the external environment by means of the interposition of a shut-off valve 36.
  • the hot air is recirculated in the recirculation ducts 34 and in branch 19 when valve 36 is closed, while it is dispersed into the external environment when valve 36 is open.
  • the variant illustrated in figure 4 differs from that illustrated in figures 1 and 2 in that, in it, the connectors 23 are eliminated and replaced with respective heat exchangers 38 and the recirculation branch 25 is eliminated and replaced with a recirculation branch 39, which has an inlet connected with branch 19 by means of valve 28, crosses the exchangers 38 in succession, and has an outlet connected with the external environment.
  • valve 28 is opened and the hot air fed downstream of nozzle 17 is fed along the recirculation branch 39 to heat up the air under pressure fed along branch 19.
  • branch 39 comprises a first segment extending in succession through the exchangers 38, and a second segment to heat up a tank containing the glue that is to be applied onto the lateral profile 4 of panel 2 or onto edge 11.
  • each recirculation branch 32, 39 may also be provided with a further recirculation segment (completely similar to segment 29) facing nozzle 17 to cause the hot air fed through nozzle 17 itself to be recirculated.
  • the presence of the recirculation branches 25, 32 and 39 therefore allows the hot air fed downstream of the outlet nozzle 17 to be reused to heat up the air under pressure fed along the feeding branch 19 and/or to heat up the glue that is to be applied onto the lateral profile 4 of panel 2 or onto edge 11.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
EP15153849.3A 2014-02-04 2015-02-04 Machine pour placage de chant de panneaux en bois ou similaire Active EP2902160B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITBO20140047 2014-02-04

Publications (3)

Publication Number Publication Date
EP2902160A1 true EP2902160A1 (fr) 2015-08-05
EP2902160A8 EP2902160A8 (fr) 2015-09-30
EP2902160B1 EP2902160B1 (fr) 2018-05-23

Family

ID=50440728

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15153849.3A Active EP2902160B1 (fr) 2014-02-04 2015-02-04 Machine pour placage de chant de panneaux en bois ou similaire

Country Status (1)

Country Link
EP (1) EP2902160B1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201900024529A1 (it) * 2019-12-18 2021-06-18 Scm Group Spa Sistema per la bordatura di pannelli.
EP4005758A1 (fr) * 2020-11-27 2022-06-01 HOMAG GmbH Dispositif et procédé de revêtement d'une pièce

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019114105A1 (de) * 2019-05-27 2020-12-03 Homag Gmbh Verfahren und Vorrichtung zum Beschichten von Werkstücken

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4222812A (en) * 1978-06-29 1980-09-16 Lof Plastics, Inc. Hot air edge banding machine
DE10342723A1 (de) * 2003-09-16 2005-08-04 Delle Vedove Maschinenbau Gmbh Wärmetauschervorrichtung
EP2428340A1 (fr) * 2010-09-14 2012-03-14 Brandt Kantentechnik GmbH Cinématique de culbute de dosage
WO2014019847A1 (fr) * 2012-08-03 2014-02-06 Homag Holzbearbeitungssysteme Gmbh Procédé et dispositif de revêtement de pièces

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4222812A (en) * 1978-06-29 1980-09-16 Lof Plastics, Inc. Hot air edge banding machine
DE10342723A1 (de) * 2003-09-16 2005-08-04 Delle Vedove Maschinenbau Gmbh Wärmetauschervorrichtung
EP2428340A1 (fr) * 2010-09-14 2012-03-14 Brandt Kantentechnik GmbH Cinématique de culbute de dosage
WO2014019847A1 (fr) * 2012-08-03 2014-02-06 Homag Holzbearbeitungssysteme Gmbh Procédé et dispositif de revêtement de pièces

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201900024529A1 (it) * 2019-12-18 2021-06-18 Scm Group Spa Sistema per la bordatura di pannelli.
EP3838525A1 (fr) * 2019-12-18 2021-06-23 SCM Group S.p.A. Systeme de bordurage de chant de paneaux
EP4005758A1 (fr) * 2020-11-27 2022-06-01 HOMAG GmbH Dispositif et procédé de revêtement d'une pièce

Also Published As

Publication number Publication date
EP2902160B1 (fr) 2018-05-23
EP2902160A8 (fr) 2015-09-30

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