EP2365899A1 - Procédé et dispositif pour l'enduction de pièces - Google Patents

Procédé et dispositif pour l'enduction de pièces

Info

Publication number
EP2365899A1
EP2365899A1 EP09763940A EP09763940A EP2365899A1 EP 2365899 A1 EP2365899 A1 EP 2365899A1 EP 09763940 A EP09763940 A EP 09763940A EP 09763940 A EP09763940 A EP 09763940A EP 2365899 A1 EP2365899 A1 EP 2365899A1
Authority
EP
European Patent Office
Prior art keywords
workpiece
coating material
energy
source
adhesive
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
EP09763940A
Other languages
German (de)
English (en)
Other versions
EP2365899B1 (fr
Inventor
Johannes 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
Priority to EP09763940.5A priority Critical patent/EP2365899B1/fr
Priority to EP16191750.5A priority patent/EP3132901B1/fr
Publication of EP2365899A1 publication Critical patent/EP2365899A1/fr
Application granted granted Critical
Publication of EP2365899B1 publication Critical patent/EP2365899B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D5/00—Other working of veneer or plywood specially adapted to veneer or plywood
    • B27D5/003—Other working of veneer or plywood specially adapted to veneer or plywood securing a veneer strip to a panel edge

Definitions

  • the invention relates to a method and a device for coating workpieces, which are preferably at least partially made of wood, wood materials, plastic or the like.
  • DE 34 47 592 discloses a Kantenanleimvorraum, in which the edge material is supplied via a feed device while a hot melt adhesive is applied to the workpiece facing surface of the edge material. Subsequently, the edge material is pressed by means of a pressure roller against the surface to be coated of the workpiece.
  • Coating apparatus continues to increase, so there is also a need for an accelerated operation of the coating apparatus.
  • the erfmdungsge154en method is based on the idea to use the material properties of the wood frequently used materials or wood-based materials directly for the adhesion of a coating material.
  • the method according to the invention is characterized in that energy is applied to a surface of the workpiece such that lignin contained in the material of the workpiece at least at the surface of the workpiece to be coated exhibits adhesive properties.
  • the coating material is printed on a surface of the workpiece, wherein the coating material is at least partially connected to the workpiece using the adhesive properties of the lignin.
  • the coating material By applying energy to the lignin contained in the workpiece to be coated this is melted or fused so that the lignin unfolds adhesive properties.
  • the energy in the context of the present invention can be applied directly or indirectly to the surface of the workpiece. Indirect application of the energy can take place, for example, by reflection or else by other suitable mechanisms. For example, it is possible to use the coating material itself as a transfer medium of reflected radiation, heat or other suitable forms of energy.
  • the invention provides a device for coating workpieces according to claim 5.
  • the erfmdungsge speciallyen device is based on the idea to set at the interface between the coating material and workpiece and replace the previously used, preheated hot melt adhesive by novel bonding techniques.
  • the device for coating workpieces has at least one energy source for applying energy to an adhesive or agent which can be provided independently and / or can be part of the coating material and / or of the workpiece. In this way, there are significantly more far-reaching possibilities to tailor the bonding process of the coating material on the workpiece to the respective requirements and thus to enable optimum operation of the coating device for each individual case.
  • the energy source can be designed in various ways, the term "energy” being to be understood in a broad sense in the context of the present invention Group consisting of Laser, Infrared Source, Ultrasonic Source, Magnetic Field Source, Microwave Source, Plasma Source and Fumigation Source
  • energy sources are also possible, such as applying a chemical reaction to the coating material, such as a fumigation source
  • the respective energy source on the one hand can activate an agent already present as an adhesive and on the other hand also an agent which does not serve as an adhesive by applying energy, a chemical reaction or the like can make an adhesive.
  • any desired energy source can be used in the context of the invention.
  • a laser allows an especially goal-oriented and zugxges working, while infrared and plasma sources allow a broad-track operation and a good depth effect.
  • Ultrasonic, magnetic field, and microwave energy sources operate without contact, and can still add energy to the process during coating coating rates.
  • a magnetic field has a good depth effect.
  • a fumigation based energy source is sic ⁇ particularly well suited, by acting on and reaction with the
  • the Beschichrungsmaterial is in the context of the present invention preferably in the form of a supply in the Supply means provided, wherein the coating material may be selected in the context of the present invention from a variety of materials. According to one embodiment of the invention, it is preferred that the material of the coating material is selected from ⁇ er group consisting of plastic, veneer, paper, cardboard, metal and combinations thereof.
  • the coating material 12 has, at least in sections, an integral or discrete layer which unfolds adhesive properties due to the supply of energy. In this way it is no longer absolutely necessary in the context of the invention to provide a conventional adhesive application, but this function can be integrated into the edge feed. In this case, a complete integration of the adhesive or adhesively feasible agent in the coating material allows a very simple and draughty operation of the inventive device.
  • the formation of the adhesive or adhesively feasible agent as a discrete layer which is combined with the coating material at a suitable time, has the advantage of a higher variety of va ⁇ antenviel must so in the latter embodiment, even for a variety of types of coating materials, only a single discrete layer of Adhesive or adhesively feasible agent be kept.
  • the device further comprises at least one
  • Adhesive preparation device which is adapted to apply an already adhering or still to be made by earergiebea ⁇ ftschung to be made center on the Beschxchtungsmate ⁇ al and / or workpiece.
  • Var ⁇ antenna diversity of the device is still further increased, and it can also be used with combinations of different adhesives, so that virtually any coating material can be applied to virtually any workpiece by means of the inventive device. It is particularly preferred that the device at least two
  • the pressure device is set up to apply the coating material to a narrow surface and / or a broad surface of the workpiece.
  • the at least one energy source is arranged movable, preferably transversely to the direction of a relative movement between the pressure device and the respective workpiece produced by the Forderemricntung.
  • the at least one energy source is arranged movable, preferably transversely to the direction of a relative movement between the pressure device and the respective workpiece produced by the Forderemricntung.
  • the Forder nails can be configured in the context of the present invention in various ways, for example, such that the respective workpiece is stationary and one or more components of the device m with respect to the workpiece are movable.
  • Such Stationarmaschmen are characterized by a very small footprint and high variability.
  • the conveying device is set up to convey the workpieces in a passage direction, wherein the conveying operation can be continuous or optionally also clocked. In this way, a particularly rapid and trouble-free operation of the device according to the invention with high throughput is achieved.
  • the individual structural units of the device according to the invention can in principle be arranged as independent, fixed or movably mounted units. According to one embodiment of the invention, however, it is provided that at least the pressing device and the energy source are combined to form a unit which can be exchanged via an interface in a supply unit such as in the tool holder of a spindle unit.
  • a highly variable and flexible device can be created with which a variety of workpieces and feed materials can be processed without providing an excessively large number of components.
  • the number of required drive units is reduced by the interchangeability of the unit of pressure device and energy source, since different units on the common supply unit (for example spindle unit) can be driven and supplied.
  • the device has a focusing device, which is set up to direct the energy provided by the energy source to selected regions of the adhesive to be activated or to be generated.
  • a focusing device which is set up to direct the energy provided by the energy source to selected regions of the adhesive to be activated or to be generated.
  • the operation of the device can be easily adapted to different dimensions of the coating material, without modification work on the respective energy source are required. So the active area can be punctiform or linear, but also be set flat with different dimensions.
  • the intensity of the energy applied to the adhesive can also be varied by way of the focusing device, so that an optimum coating result can be achieved without damaging the coating material.
  • the energy source and / or the focusing device are intended to oscillate.
  • local Energyspxtzen can be avoided, and it can be a uniform coverage of the energized area to be effected.
  • the energy source and / or the siereinricntnt be set to oscillate the faster, the faster the relative movement relative to the workpiece is.
  • the sierein ⁇ chtung can direct the energy provided by the energy source in principle to any point of Beschikntungsmaterials or optionally also the workpiece or adhesive. According to one embodiment of the invention, however, it is provided that the focusing device is set up to direct the energy provided by the energy source in the region immediately upstream of a contact pressure area in which the coating material is printed on a surface of a workpiece. As a result, it is possible to work with a minimum amount of energy, which not only reduces energy consumption but also minimizes potential damage to the energized materials.
  • the device further comprises a Steuerem ⁇ cntung, which is adapted to the operation, in particular the power of the power source on the Properties and dimensions of the adhesive or adhesively feasible agent and to adjust the relative speed between the energy source and adhesive.
  • a Steuerem ⁇ cntung which is adapted to the operation, in particular the power of the power source on the Properties and dimensions of the adhesive or adhesively feasible agent and to adjust the relative speed between the energy source and adhesive.
  • Fig. 1 shows schematically a plan view of a coating apparatus 1 as a preferred embodiment of the present invention
  • Fig. 2 shows schematically a top view of a Beschikntungsvorricht ⁇ ng 1 as a second preferred embodiment of the present invention
  • Fig. 3 shows schematically a plan view of a coating apparatus 1 as a third preferred embodiment of the present invention
  • FIG. 4 shows schematically a side view of a coating unit for a coating precursor according to the invention.
  • a coating apparatus 1 for coating workpieces 2 as a preferred embodiment of the present invention is shown schematically in FIG. 1 in a top view.
  • the Be istungsvomchtung 1 is used in the present embodiment for coating plate-shaped workpieces 2, which consist at least at intervals of wood-wood materials, plastic or the like, as used for example in the field of furniture and component industry today.
  • workpieces such as solid wood or chipboard, lightweight panels, sandwich panels, skirting boards, profiles for profile coating, etc. It should be noted, however, that the present invention is not limited to such items.
  • the coating apparatus 1 initially comprises a conveying device 4, which is configured in the present embodiment as a throughfeed direction, for example in the form of a roller requester, a belt pusher or the like.
  • the Forder worn 4 serves to require the workpieces 2 in a direction of passage (from left to right m Figure 1 ⁇ .
  • a supply device 10 is arranged for supplying a coating material 12, wherein the Be Anlagenungsmate ⁇ al, for example, an edge material for a narrow surface of the piece of value, but also a cover material for Breitflacne or] ede any other surface of the value piece 2 .
  • the supply means 10 contains a supply of coating material 12, which may consist of a wide variety of materials, such as plastic, veneer, paper, cardboard, metal, etc., and various combinations thereof.
  • the Beschmchtungsmate ⁇ a J. for example, in roll form (if necessary in a cassette), but also be provided in the form of individual sections.
  • such integral coating material may be formed by, for example, a plastic material containing a layer 14 which unfolded by the energy supply adhesive properties.
  • the remaining coating material may in principle be made of any material.
  • the discrete layer 14 is arranged on the workpiece 2 facing side of the Be Anlagenungs ⁇ iate ⁇ als 12.
  • the feeding device 10 feeds the coating material 12 to a pressing device 20 for pressing the coating material 12 against a surface 2a of the workpiece 2.
  • the pressing device 20 in the present embodiment is a pressure roller (instead of a pressure roller, for example, also bands, shoes or the like can be used), which rolls on the surface 2a of the workpiece 2 and in this way the coating material 12 to the surface 2a of the workpiece 2 prints.
  • the coating device 1 comprises an energy source 30 for applying energy to the adhesive or adhesively feasible agent 14.
  • energy sources such as for example laser, infrared source, ultrasound source, magnetic field source, microwave source, plasma source, gassing source, etc All of these energy sources 30 provide energy in directed form and direct it to the adhesive agent 14 which is supplied as an integral or discrete part of the coating material 12.
  • This bundled or directed energy is represented by a line emerging from the energy source 30, as in FIG. This passes through a sierem ⁇ chtung 32, which is adapted to direct the energy provided by the energy source 30 to selected areas of the adhesive 14 to be activated or to take place.
  • the energy source 30 can also be arranged at another suitable location within the scope of the invention.
  • an energy source according to a general embodiment of the invention for example, be integrated in the pressure device and / or the Forder worn.
  • Focusing device 32 to act a lens.
  • energy source 30 can use different focusing device 32, wherein the focusing device can be set up in each case to set the scattering width and possibly also the intensity of the applied energy.
  • the focusing device 32 directs the energy provided by the energy source 30 in the area immediately upstream of an inking area 32, in which the coating material 12 is printed onto the surface 2a of the workpiece 2.
  • This operation of the power source 30 and also of the focusing device 32 is controlled by a control device which is shown in more detail, wherein the control device particularly measures the power of the power source 30 on the properties and dimensions of the adhesive 14 and the relative severity between the power source 30 and the adhesive 14 tunes.
  • the controller may also evaluate information from sensors that interfere with the operation of the
  • Be istungsvorricntung monitor for example, sensors, which are arranged in the region of the Arrhumk Schemes 22 and For example, detect the temperature of the applied coating material 12.
  • the control device can control not only the energy source 30 but optionally also the focusing device 32.
  • the focusing device 32 is arranged in the present embodiment to oscillate, if necessary, for example, in a direction perpendicular to the drawing plane in Figure 1. Under an oscillating motion, an oscillation having a frequency of, for example, at least 10 Hz (e.g. 50 Hz). In this case, the control device ensures that the focusing device oscillates faster, the faster the relative movement relative to the workpiece 2.
  • the focusing device 32 in the present embodiment is movable together with the energy source 30, in a direction transverse to the direction of passage of the conveyor 4. This is particularly advantageous for large-scale coating tasks, such as for coating the broad surfaces of workpieces.
  • the device 1 according to the invention also makes possible the method according to the invention in which lignin contained in the respective workpiece 2 is applied to the coating material 12 at the Surface 2a of the workpiece 2 is used.
  • the energy source 30 for this purpose for example by means of the focusing device 32, set up and adjusted so that contained in the material of the workpiece 2 lignin at least on the surface to be coated 2a of the Werkstucks adhesive properties unfolds. This presupposes, of course, that lignin is contained in the workpiece to be coated, ie that the workpiece consists at least in sections of wood, wood-based materials or the like.
  • the coating material 12 is printed on the surface 2a of the workpiece, so that the coating material is connected to the workpiece using the adhesive properties of the lignin.
  • the adhesive effect of the lignin can be combined with the adhesion of a separately supplied agent 14.
  • the energy of the energy source 30 can be applied directly to the surface 2a to be coated. Alternatively or additionally, it is also possible to apply the energy, for example, to the coating material 12. This energy can be reflected by the coating material 12, for example, or introduced in the form of residual heat in the surface 2a of the workpiece.
  • a second preferred embodiment of the coating device 1 according to the invention is shown schematically in a plan view in FIG. This differs from the first embodiment shown in Figure 1 primarily in that the adhesive or adhesively feasible means 14 is not supplied together with the coating material 12, but by means of a
  • Adhesive supply device is applied in the form of an adhesive applicator roll 40 on the surface to be coated 2a of the workpiece 2.
  • Adhesive applicator roll 40 is applied in the form of an adhesive applicator roll 40 on the surface to be coated 2a of the workpiece 2.
  • the thus-applied adhesive 14 is then also activated or generated by energization by means of the energy source 30, again immediately upstream of a pressing region 22.
  • the coating apparatus 12 of the present invention may, of course, also include other adhesive providing means, such as a second adhesive applicator roll or the like, and these different adhesive providing means preferably also provide different adhesive agents 14 from each other.
  • adhesive providing means such as a second adhesive applicator roll or the like
  • these different adhesive providing means preferably also provide different adhesive agents 14 from each other.
  • FIG. 3 A third preferred embodiment of the coating device 1 according to the invention is shown schematically in FIG. 3 in a plan view. This is characterized in that the adhesive or adhesively feasible agent 14 in Shape of a web material from one
  • Adhesive supply device 42 is provided. This sheet material 14 is fed in synchronism with the coating material 12 in a region between the coating material 12 and the workpiece 2, and then energized and adhered in the region immediately upstream of a pressing portion 22. In this way, at any time a change of the coating material 12 can be done without problems, while always with the same adhesive or adhesively feasible means can be used.
  • a preferred embodiment of the pressure device 20 and the power source 30 are shown schematically in Figure 4 in a side view.
  • the pressing device 20 and the power source 30 are combined to form a unit 50, which can be exchanged via an interface 52 in a supply unit such as in the tool holder of a spindle unit.
  • the interface 52 can be, for example, a universal interface, as disclosed in the applicant's patent application EP 0 743 139.
  • the interchangeable unit 50 may also support the sensing device 32 and further include a coating material supply slot 54 for ease of delivery to the platen roller 20 and energy from the opposite side by the energy source 30.
  • a coating material supply slot 54 for ease of delivery to the platen roller 20 and energy from the opposite side by the energy source 30.
  • Such a unit is particularly suitable for Stationarmaschmen, but also for continuous machines ,, and allows a particularly variable and flexible operation Such machines, the number of required supply units (spindle units) can be reduced accordingly.

Abstract

L'invention concerne un procédé d'enduction de pièces (2), qui sont constituées au moins en sections de bois, de matériaux à base de bois ou analogues, comprenant les étapes suivantes : la mise à disposition d'une pièce (2), qui est constituée au moins en sections de bois, de matériaux à base de bois ou analogues, l'introduction d'un matériau de revêtement (12) à appliquer sur une surface (2a) de la pièce (2), l'application d'énergie sur une surface (2a) de la pièce de manière à ce que la lignine contenue dans le matériau de la pièce (2) développe des propriétés d'adhésion au moins sur la surface à enduire (2a) de la pièce, et le pressage du matériau de revêtement (2) sur une surface (2a) de la pièce, le matériau de revêtement (12) étant relié avec la pièce (2) au moins partiellement en utilisant les propriétés d'adhésion de la lignine.
EP09763940.5A 2008-12-01 2009-11-30 Dispositif pour le revêtement de pièces Active EP2365899B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP09763940.5A EP2365899B1 (fr) 2008-12-01 2009-11-30 Dispositif pour le revêtement de pièces
EP16191750.5A EP3132901B1 (fr) 2008-12-01 2009-11-30 Dispositif et procede destines au revetement de pieces a usiner

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE202008015878U DE202008015878U1 (de) 2008-12-01 2008-12-01 Vorrichtung zum Beschichten von Werkstücken
EP09002588.3A EP2191947B1 (fr) 2008-12-01 2009-02-24 Dispositif destinés au revêtement de pièces à usiner
EP09763940.5A EP2365899B1 (fr) 2008-12-01 2009-11-30 Dispositif pour le revêtement de pièces
PCT/EP2009/066035 WO2010063668A1 (fr) 2008-12-01 2009-11-30 Procédé et dispositif pour l'enduction de pièces

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP16191750.5A Division EP3132901B1 (fr) 2008-12-01 2009-11-30 Dispositif et procede destines au revetement de pieces a usiner

Publications (2)

Publication Number Publication Date
EP2365899A1 true EP2365899A1 (fr) 2011-09-21
EP2365899B1 EP2365899B1 (fr) 2016-10-12

Family

ID=42105528

Family Applications (3)

Application Number Title Priority Date Filing Date
EP09002588.3A Expired - Fee Related EP2191947B1 (fr) 2008-12-01 2009-02-24 Dispositif destinés au revêtement de pièces à usiner
EP16191750.5A Active EP3132901B1 (fr) 2008-12-01 2009-11-30 Dispositif et procede destines au revetement de pieces a usiner
EP09763940.5A Active EP2365899B1 (fr) 2008-12-01 2009-11-30 Dispositif pour le revêtement de pièces

Family Applications Before (2)

Application Number Title Priority Date Filing Date
EP09002588.3A Expired - Fee Related EP2191947B1 (fr) 2008-12-01 2009-02-24 Dispositif destinés au revêtement de pièces à usiner
EP16191750.5A Active EP3132901B1 (fr) 2008-12-01 2009-11-30 Dispositif et procede destines au revetement de pieces a usiner

Country Status (7)

Country Link
US (1) US20120058279A1 (fr)
EP (3) EP2191947B1 (fr)
CN (2) CN102271884A (fr)
BR (1) BRPI0922115A2 (fr)
DE (1) DE202008015878U1 (fr)
ES (2) ES2441599T3 (fr)
WO (1) WO2010063668A1 (fr)

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US20120058279A1 (en) 2012-03-08
BRPI0922115A2 (pt) 2016-01-05
EP2365899B1 (fr) 2016-10-12
EP3132901B1 (fr) 2019-10-23
DE202008015878U1 (de) 2010-04-15
EP2191947A1 (fr) 2010-06-02
ES2441599T3 (es) 2014-02-05
ES2607655T3 (es) 2017-04-03
CN102271884A (zh) 2011-12-07
CN106426431A (zh) 2017-02-22
WO2010063668A1 (fr) 2010-06-10
EP2191947B1 (fr) 2013-10-16
EP3132901A1 (fr) 2017-02-22

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