EP1818147A2 - Appareil et procédé pour usiner en continu les bords des pièces - Google Patents

Appareil et procédé pour usiner en continu les bords des pièces Download PDF

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Publication number
EP1818147A2
EP1818147A2 EP07010965A EP07010965A EP1818147A2 EP 1818147 A2 EP1818147 A2 EP 1818147A2 EP 07010965 A EP07010965 A EP 07010965A EP 07010965 A EP07010965 A EP 07010965A EP 1818147 A2 EP1818147 A2 EP 1818147A2
Authority
EP
European Patent Office
Prior art keywords
section
coating
nozzle
coating composition
workpiece
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.)
Withdrawn
Application number
EP07010965A
Other languages
German (de)
English (en)
Other versions
EP1818147A3 (fr
Inventor
Kurt Kalmbach
Johanees Schmid
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.)
Homag GmbH
Original Assignee
Homag Holzbearbeitungssysteme 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 Homag Holzbearbeitungssysteme GmbH filed Critical Homag Holzbearbeitungssysteme GmbH
Publication of EP1818147A2 publication Critical patent/EP1818147A2/fr
Publication of EP1818147A3 publication Critical patent/EP1818147A3/fr
Withdrawn legal-status Critical Current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
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N7/00—After-treatment, e.g. reducing swelling or shrinkage, surfacing; Protecting the edges of boards against access of humidity

Definitions

  • the present invention relates to a device for stationary or continuous machining of substantially flat or strip-shaped workpieces of open-pore wood materials or the like in the edge region according to the preamble of claim 1 and a corresponding method according to the preamble of claim 13.
  • a coating agent such as paint or the like is first applied by means of a job station, such as a roller or a nozzle on a workpiece edge. This is followed by pressing in and smoothing out the applied tempering agent in a separate hot putty station which has doctor elements, spatulas and the like.
  • the device has been found to be quite useful, it has a number of disadvantages.
  • part of the applied tempering agent is removed again in the area of the hot puttying station, which is uneconomical and contributes to soiling in the area of the hot puttying station.
  • the device has a complex construction, in which the application station and the hot puttying station must each be manufactured separately, mounted and aligned and thereby results in a comparatively long processing path.
  • the surface quality of the edges which determines the appearance of components such as furniture fronts authoritative, with the device according to EP 0 744 260 B1 only limited is improvable.
  • the EP 1 068 026 B1 a method and system for applying paint to edges of sheets and strips of porous structure.
  • the paint is first metered by means of a metering unit and then transferred to a first roller, by means of which the paint is finally applied to the edge of the workpiece.
  • the applied paint is smoothed by means of another, opposite roller.
  • the amount of paint applied by the metering unit to the first roller should be matched to the porosity of the workpiece edge.
  • the present invention is based on the idea of simplifying the construction and / or the method sequence in that the application as well as the coating or smoothening of a coating mass onto an edge section are combined or brought together as far as possible.
  • the coating device has a nozzle member which has a nozzle opening which faces the at least one edge portion and at least by a first surface and a second surface is limited, wherein the first surface in the direction of passage in front of the second surface is disposed and protrudes from the second surface.
  • the second surface set back from the first surface acts both as a boundary of the nozzle opening, by means of which the coating composition is applied, and as a pressing and smoothing surface, by means of which the coating composition immediately after application smoothed and - with a suitably porous edge portion - is pressed into the edge portion.
  • the application and smoothing of the coating composition are carried out in a common working step.
  • a plurality of device components or method steps can be summarized, which greatly simplifies the construction of the device and allows a speedy and undisturbed procedure.
  • the difference in level of the first and second surface ensures that pressing-in and smoothing of the coating mass is achieved without separate doctor blades, rollers or the like.
  • the surface quality in the edge region of the workpiece can be significantly improved by the extensive integration of the application and smoothing of the coating composition, since the coating composition is "swept" from the outset into the desired position and no subsequent removal of coating material by means of doctoring, rolling or the like is required , As a result, not least the material requirement of coating composition is minimized, while recycling or disposal facilities for abraded coating material are also not required.
  • the supernatant of the first surface relative to the second surface substantially corresponds to the thickness of the coating composition to be applied. This makes it possible for the first surface to rest against the workpiece edge to be coated during the application of the coating composition and, at the same time, automatically set the desired layer thickness of the applied coating composition without complicated adjustments or adjustments to the apparatus or the supply of the coating composition required are. Moreover, the fact that the first surface rests at least in sections or with an edge on the edge portion of the workpiece to be coated, a volume flow in the region of the nozzle opening, which is directed from the first surface in the direction of the second surface, so that the coating composition can be selectively applied to the edge portion and smoothed.
  • the contour of the first and / or second surface substantially corresponds to the contour of the at least one edge portion.
  • a supply device by means of which the coating composition can be supplied to the nozzle opening in order to enable a continuous and economical operation of the device according to the invention. It is particularly preferred that the coating composition can be tempered by the supply device. As a result, the properties of the coating composition can be adjusted specifically to the respective boundary conditions, in particular the cross-section of the nozzle opening and the porosity of the edge section to be coated, and unwanted hardening or clogging of the coating compound can be prevented.
  • the nozzle element has a cavity, which is in communication with the nozzle opening and the supply device.
  • the cavity contributes to providing a constant and continuous volumetric flow rate of coating compound at the nozzle orifice to assure proper surface quality of the coated edge and a trouble-free and continuous operation. That's it particularly preferred that the cavity has a larger cross section than the nozzle opening cross section.
  • the cavity serves as a sort of upstream collection chamber in which there is always sufficient coating material, so that, for example, even under changing operating conditions or different coating speeds coating compound at the nozzle opening at any time is available.
  • das'Düsenelement has at least a first portion and a second portion, which are interconnected, wherein at least one of the sections facing on the other portion Surface has at least one recess for forming the nozzle opening and / or the cavity.
  • the apparatus further comprises a curing device by means of which the coating applied to the at least one edge portion coating material is curable.
  • the curing station has a device for generating UV rays. By means of such a device can be appropriate coating compositions that cure under the action of UV rays, quickly finished with very good surface quality and prepare for subsequent processing steps.
  • the apparatus further comprises a conveying device for conveying a workpiece to be processed in a passing direction.
  • a conveying device for conveying a workpiece to be processed in a passing direction.
  • the device also has a milling device for providing at least one edge section of the workpiece with a contour and / or at least one grinding device for grinding, in particular custom grinding, of the at least one edge section and / or applied coating compound.
  • the combination of one or more of these devices with the coating device according to the invention results in a processing device by means of which plate-shaped workpieces can be processed in the edge region in a rational and fully automatic continuous operation.
  • FIG. 1 schematically shows a perspective view of a preferred embodiment of a nozzle element 4 as part of the device according to the invention for machining substantially flat or strip-shaped workpieces made of open-pore wood materials or the like in the edge region.
  • the nozzle element 4 has a nozzle opening 6, which faces an edge portion 1 'of a workpiece 1 to be machined.
  • the nozzle opening 6 of the nozzle element 4 is delimited by a first surface 8 and a second surface 10.
  • the first surface 8 in a coating direction which is indicated by an arrow in FIGS. 1 and 3, is arranged in front of the second surface 10 and projects with respect to the second surface 10.
  • the first surface 8 is formed to extend substantially perpendicular to the second surface 10 as far as an edge 8 'provided to abut the edge portion 1' of the workpiece 1 to be coated.
  • the first surface 8 and the second surface 10 of the nozzle member 4 may also have a different configuration as far as the first surface 8 protrudes from the second surface 10. It is also possible that the surfaces are curved at least in sections.
  • the second surface 10 is substantially parallel to the coating direction.
  • the surface 10 is inclined at least in sections relative to the coating direction.
  • the shape of the nozzle element in the area in front of the edge 8 ' is also arbitrary.
  • coating direction is not to be understood as meaning that the nozzle element must be moved during the coating process. Rather, it is also possible that the nozzle member 4 is stationary and the edge portion to be coated is moved against the specified coating direction.
  • the configuration and arrangement of the first surface 8 and the second surface 10 according to the invention ensures that a continuous volume flow of coating material is established in the nozzle element 4, which is applied in the region of the nozzle opening 6 to the edge portion 1 'to be coated and then through the first Surface 8 is deflected in the direction of the second surface 10. Therefore, the coating composition can be smoothed simultaneously with or immediately after its application by the second surface 10 and thereby optionally in pores of the edge portion 1 'are coated.
  • the supernatant S of the first surface 8 with respect to the second surface 10 is basically arbitrary depending on the application, has shown in the coating of substantially flat or strip-shaped workpieces made of open-pore wood materials that the supernatant S advantageously in the range of 0.1 to 1 mm can lie.
  • the contour of the first surface 8 and the second surface 10 in the present embodiment substantially corresponds to the contour of the edge portion 1 ', the contour of the second surface 10 being equal to the contour of the edge portion 1'. is spaced by the desired thickness S of the applied coating composition.
  • the nozzle element 4 has a cavity 12, which communicates with the nozzle opening 6.
  • the cavity 12 is connected on the opposite side of the nozzle opening 6 with a feed device, not shown, by means of the coating material B to the nozzle opening 6 can be fed.
  • the supply device can be any supply device which is capable of supplying a suitable coating mass to the nozzle opening. It is particularly preferred that the coating material B can be tempered by the supply device.
  • the type of coating composition is not particularly limited. However, it is preferred that the coating composition is curable by means of UV rays or the like.
  • the nozzle member 4 may be formed integrally, it has been found to be advantageous that the nozzle member 4 has a first portion 4 'and a second portion 4 "detachably connected to each other, for example by means of screws or the like 6 and the cavity 12 between the two sections 4 ', 4''arranged by For example, have one or both sections corresponding recesses on the other section facing the surface.
  • the coating device with the nozzle element 4 described with reference to FIGS. 1 to 3 can advantageously be combined with other devices for processing substantially flat or strip-shaped workpieces in the edge region.
  • 4 shows schematically a preferred embodiment of a device according to the invention for machining a workpiece in the edge region.
  • the embodiment of the device according to the invention shown in FIG. 4 comprises, in addition to a nozzle element 4, which is formed for example as described above with reference to FIGS. 1 to 3, a conveying device 20 for conveying a workpiece 1 to be machined in a passage direction which is shown in FIG. 4 is shown by an arrow.
  • the device comprises a milling device 2 to provide an edge portion 1 'of the workpiece 1 with a contour, and a grinding device 3, in order to rework the contour of the edge portion 1' produced by milling.
  • the device shown in Fig. 4 has a curing device 5, which has a device for generating UV rays, by means of which on the edge portion 1 'applied coating mass B is curable.
  • the processing with the device shown in Fig. 4 can preferably be done automatically in continuous operation, which makes the device very economical.
  • Fig. 5 schematically shows a preferred embodiment of the inventive method for machining a workpiece 1 in the edge region 1 '.
  • the numbers indicated in circles each denote successive process steps.
  • a workpiece 1 is first provided, which is to be processed in the region of an edge section 1 '.
  • the workpiece 1 is fed by means of the conveyor 20, for example, a conveyor belt or the like, to the milling device 2 and provided in the region of the edge portion 1 'with a contour.
  • This contour is further processed in the third processing step by means of the milling device 3 and prepared for the subsequent coating.
  • steps 4 and 4.1 the actual coating of the edge section 1 'is carried out with a coating material B.
  • the steps 4 and 4.1 are carried out according to the present invention in a joint operation by in step 4 applying the coating composition B and in step 4.1 simultaneously applying and smoothing the coating material B in the region of the edge portion 1 '.
  • This integration of the processing steps 4 and 4.1 is made possible for the first time by the inventive design of the nozzle element 4 described above with reference to FIGS. 1 to 3.
  • the applied coating composition B is cured by means of the curing device 5, in that the coating composition B is specifically exposed to UV radiation. Finally, if appropriate, a custom grinding of the cured coating compound by means of the grinding device 3 'can follow.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Coating Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
EP07010965A 2003-04-17 2004-04-19 Appareil et procédé pour usiner en continu les bords des pièces Withdrawn EP1818147A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10317953A DE10317953B3 (de) 2003-04-17 2003-04-17 Vorrichtung und Verfahren zur Durchlaufbearbeitung von Werkstücken im Kantenbereich
EP04009203A EP1468800B1 (fr) 2003-04-17 2004-04-19 Appareil et procédé pour usiner en continu les bords des pièces

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP04009203A Division EP1468800B1 (fr) 2003-04-17 2004-04-19 Appareil et procédé pour usiner en continu les bords des pièces

Publications (2)

Publication Number Publication Date
EP1818147A2 true EP1818147A2 (fr) 2007-08-15
EP1818147A3 EP1818147A3 (fr) 2009-08-12

Family

ID=32892426

Family Applications (2)

Application Number Title Priority Date Filing Date
EP07010965A Withdrawn EP1818147A3 (fr) 2003-04-17 2004-04-19 Appareil et procédé pour usiner en continu les bords des pièces
EP04009203A Expired - Lifetime EP1468800B1 (fr) 2003-04-17 2004-04-19 Appareil et procédé pour usiner en continu les bords des pièces

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP04009203A Expired - Lifetime EP1468800B1 (fr) 2003-04-17 2004-04-19 Appareil et procédé pour usiner en continu les bords des pièces

Country Status (4)

Country Link
EP (2) EP1818147A3 (fr)
DE (1) DE10317953B3 (fr)
ES (1) ES2369268T3 (fr)
PL (1) PL1468800T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITBO20120061A1 (it) * 2012-02-09 2013-08-10 Sorbini Srl Apparato per conferire ai lati grezzi di pannelli in truciolare di legno o simili, un aspetto regolare, liscio ed in grado di ricevere un qualsiasi trattamento di finitura.
DE102015219108A1 (de) 2015-10-02 2017-04-06 Homag Gmbh Verfahren sowie Vorrichtung zur Schmalflächenbeschichtung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0864407A1 (fr) 1997-03-11 1998-09-16 Karl-Heinz Wessel Dispositif de fermeture de bord de articles en fibres du bois
DE19907939C1 (de) 1999-02-24 2000-05-31 Homag Maschinenbau Ag Durchlaufverfahren und Vorrichtung zum Anbringen eines Beschichtungsmaterials an porösen Schmalseiten von Werkstücken

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3967581A (en) * 1971-07-06 1976-07-06 Irvin Edward Zirbel Apparatus for applying a coating to a workpiece edge
DE3914567A1 (de) * 1989-05-03 1990-11-08 Agfa Gevaert Ag Fotografisches aufzeichnungsmaterial
US5085891A (en) * 1990-07-16 1992-02-04 Nordson Corporation Edge sealing apparatus and method
DE19518925A1 (de) * 1995-05-23 1996-11-28 Homag Maschinenbau Ag Verfahren und Vorrichtung zur Durchlauf-Bearbeitung von im wesentlichen flächigen oder leistenförmigen Werkstücken aus offenporigen Holzwerkstoffen und dergleichen im Kantenbereich
DK173410B1 (da) * 1998-04-07 2000-09-25 Ulmadan Aps Fremgangsmåde, anlæg samt anvendelse af fremgangsmåde og anlæg til påføring af lak

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0864407A1 (fr) 1997-03-11 1998-09-16 Karl-Heinz Wessel Dispositif de fermeture de bord de articles en fibres du bois
DE19907939C1 (de) 1999-02-24 2000-05-31 Homag Maschinenbau Ag Durchlaufverfahren und Vorrichtung zum Anbringen eines Beschichtungsmaterials an porösen Schmalseiten von Werkstücken

Also Published As

Publication number Publication date
EP1818147A3 (fr) 2009-08-12
EP1468800A2 (fr) 2004-10-20
EP1468800B1 (fr) 2011-08-31
ES2369268T3 (es) 2011-11-29
EP1468800A3 (fr) 2005-03-09
DE10317953B3 (de) 2005-02-03
PL1468800T3 (pl) 2012-01-31

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