EP3928939A1 - Dispositif et procédé de revêtement d'une pièce - Google Patents

Dispositif et procédé de revêtement d'une pièce Download PDF

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Publication number
EP3928939A1
EP3928939A1 EP21181415.7A EP21181415A EP3928939A1 EP 3928939 A1 EP3928939 A1 EP 3928939A1 EP 21181415 A EP21181415 A EP 21181415A EP 3928939 A1 EP3928939 A1 EP 3928939A1
Authority
EP
European Patent Office
Prior art keywords
adhesive
workpiece
unit
coating
tape
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Withdrawn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
EP21181415.7A
Other languages
German (de)
English (en)
Inventor
Marcus Fritz
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 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 GmbH filed Critical Homag GmbH
Publication of EP3928939A1 publication Critical patent/EP3928939A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G11/00—Applying adhesives or glue to surfaces of wood to be joined

Definitions

  • the invention relates to a device for coating a workpiece, which is preferably at least partially made of wood, wood-based materials, plastic or the like according to the preamble of claim 1, and a corresponding method.
  • the workpieces are usually provided with a coating material called an edge in the area of their narrow surface.
  • a wide variety of technologies are known for the adhesion of the coating material to the workpiece, such as the use of hot-melt adhesive.
  • devices and methods are known in which a separate adhesive web is supplied to adhere the coating material, which is activated, for example, by means of a suitable energy source, in order to adhere the coating material to the workpiece by means of the activated adhesive web.
  • a corresponding technology is in the DE 199 55 575 A1 disclosed. Thanks to the decoupling of the coating material and the joining sheet, a significantly larger variety of coating materials can be used. However, it has been shown that the quality and variability of the coating process should be further improved in the known device.
  • this object is achieved by a device for coating a workpiece according to claim 1 and a method for coating a workpiece according to claim 14.
  • a device for coating a workpiece according to claim 1 and a method for coating a workpiece according to claim 14.
  • Particularly preferred developments of the invention are given in the dependent claims.
  • the invention is based on the idea of designing the feed unit in such a way that the tape-like adhesive, which has a decisive influence on the quality and reproducibility of the coating result, can be fed and changed easily and precisely.
  • the feed unit for the tape-shaped adhesive in a coating device is arranged on or in a support element which can preferably be inserted into and removed from the device together with the feed unit.
  • the tape-like adhesive can be precisely positioned and guided thanks to the arrangement on the support element, whereby the quality of the coating process can be ensured or increased.
  • the result is easy and reliable handling, which enables an easy and reliable change between different tape-shaped adhesives and thus contributes to increased variability of the coating process or of the device.
  • the feed unit contains a supply of tape-shaped adhesive, which is preferably on a Adhesive carrier material is provided and is removable from this.
  • the quality and reproducibility of the coating process can be further increased, since impairment of the tape-like adhesive during the feeding process, for example as a result of adjacent adhesive layers sticking to one another, is avoided or minimized.
  • lower feed forces are also required for feeding the tape-like adhesive.
  • at least one side of the tape-like adhesive can be protected from soiling or other impairments during the feeding process.
  • a discharge unit is provided for discharging the adhesive carrier material. It is particularly preferred that the discharge unit is arranged on or in the support element, so that the above-mentioned advantages of increased quality and variability of the coating process can be further increased.
  • the feed and discharge units can be designed in different ways within the scope of the present invention. A particularly trouble-free operation with a simple construction results, however, when the feed unit has at least one rotatable roller for storing the tape-shaped adhesive, or when the discharge unit likewise has at least one rotatable roller for receiving the adhesive carrier material.
  • the support element is designed as an at least partially closed cassette, wherein the feed unit and / or the discharge unit is or are preferably arranged within the cassette.
  • the manageability as well as the storability and possibly also the stackability of the support element are increased.
  • the support element is set up to protect the tape-like adhesive from environmental influences such as, in particular, contamination, incidence of light or moisture. In this way, a further significant contribution to the solution of the underlying task is made, namely to increase the quality and also the variability of the coating process.
  • the support element has an information unit such as, in particular, an RFID unit, the data of which can be triggered and / or written to by the device preferably without contact, particularly preferably electromagnetically.
  • an information unit such as, in particular, an RFID unit
  • the data stored in the information unit can relate, for example, to the remaining amount of the tape-shaped adhesive present in the support element, but also to the properties such as the dimensions, the color, the type of adhesive, etc. of the tape-shaped adhesive.
  • the quality of the coating process is again guaranteed or increased, specifically when the coating requirements change.
  • the support element has at least one deflection element for deflecting the tape-shaped adhesive element.
  • the support element has at least one deflection element for deflecting the adhesive carrier material, as a result of which disruptions or Impairments due to unsuitable removal of the adhesive carrier material can be avoided.
  • the device has a pressing element for pressing the tape-like adhesive onto the coating material and / or the workpiece.
  • the exact position of the tape-shaped adhesive can be achieved in relation to the coating material or the workpiece, which ensures that the tape-shaped adhesive can perform its task without interference and in the right place and, for example, does not wrinkle.
  • the pressure element can be adjusted between a working position and a change position. This makes it possible to simplify the process of replacing and replacing the support element with the feed unit provided thereon or in it, and to make it trouble-free.
  • the support element can be easily exchanged and exchanged when the pressure element is in its exchange position.
  • the pressing element in its working position can carry out a particularly precise and trouble-free pressing of the tape-like adhesive.
  • the pressure element can fulfill a double function within the scope of the present invention, namely to activate the tape-like adhesive, i.e. to make it at least partially adhesive.
  • the pressure element can have a suitable material, such as silicone.
  • the device has an activation unit for activating the tape-shaped adhesive, which is preferably set up that To heat pressure element.
  • an activation unit for activating the tape-shaped adhesive which is preferably set up that To heat pressure element.
  • a targeted activation of the tape-shaped adhesive can be achieved, which is also integrated with the process of pressing the tape-shaped adhesive, so that the applied activation energy can be precisely adjusted with the aim of optimal adhesion of the tape-shaped adhesive to the coating material or to reach the workpiece.
  • the support element has at least one recess into which the pressure element and / or the activation unit extends. This achieves a precise and effective positioning of the pressure element and possibly also the activation unit in relation to the band-shaped adhesive, which enables the pressure element to engage behind the band-shaped adhesive in the region of the recess, for example in its changing position, and then to move it into its working position, whereby the tape-like adhesive is applied to the surface of the pressure element and is thus optimally prepared for pressing.
  • a method according to the invention is the subject of the independent patent claim 14. This enables the above-mentioned advantages of the device according to the invention and emphasizes the aspect that the support element can be easily and reliably removed for successive coating processes and replaced by another support element with a suitable tape-like adhesive.
  • FIG Fig. 1 A device 1 for coating a workpiece 2 is shown in FIG Fig. 1 shown schematically in a plan view.
  • the workpiece 2 to be coated can be, for example, a plate-shaped workpiece which consists at least in sections of wood, wood-based materials, plastics or similar materials or material combinations. Such workpieces are widely used in the furniture and construction element industries.
  • the device 1 initially comprises a coating unit 30 for coating the workpiece 2 with a coating material, which has a pressing element 32 for pressing the coating material 4 onto the workpiece 2.
  • the coating material can be, for example, a layer or web made of plastic, paper, veneer or a wide variety of other materials, with various multilayer coating materials also being conceivable.
  • the coating unit 30 in the present embodiment comprises feed rollers 36, which for this purpose serve to precisely feed the coating material with the tape-like adhesive 20 provided thereon to the surface of the workpiece 2 to be coated.
  • the coating unit 30 in the present embodiment has one or more activation units 34, which serve to activate the band-shaped adhesive 20 by the input of energy, in particular heat (ie to make it adhesive), so that the coating material 4 is made using the band-shaped adhesive 20 can be adhered to the workpiece 2.
  • the device 1 has a traversing unit 40, which in the present embodiment is designed as a conveyor device such as a conveyor belt or a conveyor chain and serves to convey the workpieces 2 in a direction D along the pressure element 32.
  • a traversing unit 40 which in the present embodiment is designed as a conveyor device such as a conveyor belt or a conveyor chain and serves to convey the workpieces 2 in a direction D along the pressure element 32.
  • the moving unit within the scope of the present invention can also serve to move the coating unit 30 with respect to the workpiece 2, while the workpiece 2 remains essentially stationary (so-called stationary technology). Mixed forms of both concepts are also possible within the scope of the invention.
  • the device 1 shown has a support element 50, on or in which a in Fig. 1 Feed unit, not shown in detail, for feeding a tape-shaped adhesive 20 is arranged.
  • the tape-shaped adhesive 20 serves to produce an adhesive connection between the coating material 4 and the workpiece 2.
  • the tape-like adhesive can be, for example, a tape which consists entirely or partially of a heat-activatable adhesive such as hot-melt adhesive or the like.
  • the tape-shaped adhesive 4 can also contain a carrier web or a carrier matrix in order to ensure the stability of the tape-shaped Increase adhesive.
  • the present invention is not limited to the type of adhesive.
  • the support element 50 is in Fig. 1 shown in two possible positions.
  • the support element 50 with the feed unit arranged therein can be arranged adjacent to the surface of the coating material 4 facing the workpiece 2 in order to apply the band-shaped adhesive 20 to the coating material 4.
  • the or a support element 50 can also be arranged adjacent to the movement part of the workpieces 2 (dashed position in Fig. 1 ) in order to apply tape-shaped adhesive to the surface of the workpiece 2 to be coated.
  • FIG Fig. 2 One embodiment of the support element 50 is shown in FIG Fig. 2 shown in more detail in a schematic plan view. It can be seen that the carrying unit 50 in the present embodiment is constructed as a cassette which has a housing 58 in which the strip-shaped coating material 20 and numerous components and units are accommodated.
  • the cassette 50 in the present embodiment comprises both the feed unit 10 for feeding the tape-shaped adhesive 20 and the discharge unit 14 for discharging the adhesive carrier material 22.
  • the feed unit 10 and the discharge unit 14 in the present embodiment are each supported by a rotatable roller 12 and 16 formed, on which the tape-shaped adhesive is stored or the adhesive carrier material is received.
  • various other components can also be present, such as, for example, holding or guide elements which serve to ensure a fault-free and wrinkle-free supply of the band-shaped adhesive 20 and a reliable removal of the adhesive carrier material 22.
  • the feed roller 12 and the discharge roller 16 each have a star-shaped recess which is used to position and couple the feed unit 10 and the discharge unit 16 or the entire support element 50 within the device 1.
  • the device 1 has suitable projections which engage in the recesses 12 ′ and 16 ′ of the rotatable rollers 12 and 16.
  • the positioning and coupling means 12 ′, 16 ′ can also serve to effect the winding and unwinding of the adhesive carrier material 22 or the band-shaped adhesive 20 in synchronism with the travel operation of the travel unit 40.
  • the rotatable roller 16, which receives the adhesive carrier material 22 can be rotated in the manner shown in FIG Fig. 2 direction shown by the arrow.
  • the cassette 50 in the present embodiment comprises an RFID chip 70, in which various data about the cassette 50 can be stored, such as the type of tape-shaped adhesive 20, the remaining amount or already used amount of tape-shaped adhesive 20, the use-by date , etc ..
  • the device 1 can read this data from the RFID chip 70 and, if necessary, can also write corresponding or other data to the RFID chip 70, the data exchange being able to take place in a contactless and electromagnetic manner. It should be noted, however, that other types of information units can also be used within the scope of the invention.
  • the housing 58 of the cassette 50 is designed as a closed housing in the present embodiment, which has only one - possibly sealed - outlet opening 58 'for the tape-shaped adhesive 20 and an - optionally sealed - inlet opening 58''for the adhesive carrier material 22. It should be noted, however, that the housing can also have different openings, which is preferred within the scope of the invention is that the housing or the support element as a whole can protect the band-shaped adhesive 20 from environmental influences such as, in particular, contamination, incidence of light or moisture. For this, however, it can be sufficient that only certain areas or sides of the housing are completely or partially closed.
  • a deflection roller 52 for deflecting the tape-shaped adhesive 20 and a deflection roller 54 for deflecting the adhesive carrier material 22. This allows the course of the tape-shaped adhesive to be specifically adapted to the conditions of the respective application, so that the tape-shaped adhesive can be applied safely and reliably.
  • the device 1 has a pressure element 60 which, in the present embodiment, is formed by a pressure roller which consists at least in sections of silicone.
  • the pressing element 60 is used to press the band-shaped adhesive 20 onto the coating material 4 or the workpiece 2, depending on the position in which (cf. Fig. 1 ) the support element 50 is currently being used.
  • the pressing element 60 is on the one hand around a perpendicular to the plane of the drawing in Fig. 2 running axis rotatable, but also linearly adjustable, as indicated by a double arrow in Fig. 2 indicated. In this way, the pressure element 60 is between the in Fig. 2 shown working position and one - in Fig. 2 shifted downwards - changing position adjustable.
  • the device 1 in the present embodiment has an activation unit 62 in the form of a heating device or energy source.
  • This serves to activate the band-shaped adhesive 20 by heating, that is to say to make it adhesive.
  • there is indirect heating of the tape-shaped adhesive 20 is used, in which the activation unit 62 heats the pressure roller 60 and this in turn at least partially transfers the heat to the tape-shaped adhesive 20.
  • the activation unit 62 is arranged adjacent to the pressure roller 60. When the cassette 50 is installed, the pressure roller 60 and the activation unit 62 are located in a recess 56 which is formed or defined in the cassette 50.
  • the pressure roller 60 is between the in Fig. 2 shown working position and one - in Fig. 2 offset downwards - changing position adjustable.
  • Both the activation unit (s) 34 of the coating unit 30 and the activation unit (s) 62 can each be designed as an energy source, using their energy, in particular heat, on the tape-like adhesive (or in other embodiments also the coating material and / or the workpiece ) can be applied.
  • energy sources can be used for this, such as hot air sources, laser sources, infrared sources, ultrasound sources, microwave sources, etc.
  • the operation of the device 1 described above takes place, for example, as follows.
  • the cassette 50 is in the in Fig. 1 position shown changed while the pressure element 60 is in its change position.
  • the pressing element 60 is then pushed forward into its working position and, in the process, deflects the band-shaped adhesive element 20 towards the coating material 4.
  • the real Coating operation begins, in which the coating material 4 is conveyed to the coating unit 30 and, at the same time, the band-shaped adhesive 20 is applied to the inner surface of the coating material 4 facing the workpiece 2.
  • the tape-like adhesive is indirectly heated by the activation unit 62 and thus adheres to the coating material 4.
  • the workpieces 2 are also simultaneously moved on the moving unit 40 in the in Fig. 1 shown flow direction D promoted.
  • the coating material 4 can now be applied and pressed against the surface of the workpiece 2 to be coated with the interposition of the band-shaped adhesive 20. Shortly beforehand, it is finally activated by means of the activation unit (s) 34, so that an adhesive bond is created between the coating material 4 and the workpiece 2.
  • the pressure roller 60 is moved back from the working position to the changing position, and the cassette 50 is removed from the device 1.
  • Another cassette 50 with the desired band-shaped adhesive 20 can then be inserted into the device 1 in order to then move the pressure element 60 again from the changing position into the working position.
  • a corresponding coating process can now be carried out again.
EP21181415.7A 2020-06-25 2021-06-24 Dispositif et procédé de revêtement d'une pièce Withdrawn EP3928939A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020116753.9A DE102020116753A1 (de) 2020-06-25 2020-06-25 Vorrichtung und Verfahren zum Beschichten eines Werkstücks

Publications (1)

Publication Number Publication Date
EP3928939A1 true EP3928939A1 (fr) 2021-12-29

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP21181415.7A Withdrawn EP3928939A1 (fr) 2020-06-25 2021-06-24 Dispositif et procédé de revêtement d'une pièce

Country Status (2)

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EP (1) EP3928939A1 (fr)
DE (1) DE102020116753A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19955575A1 (de) 1999-11-18 2001-05-23 Brandt Kantentechnik Gmbh Verfahren und Vorrichtung zum Anhaften eines Deckmaterials an Werkstückoberflächen von fortlaufend bewegten oder stationär angeordneten platten- oder leistenförmigen Werkstücken
DE102019112600A1 (de) * 2019-05-14 2020-11-19 Felder Kg Vorrichtung zur Beschichtung einer Oberfläche

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20204285U1 (de) 2002-03-18 2002-07-04 Paul Ott Gmbh Maschinenfabrik Vorrichtung zur Lagerung von Kantenmagazinen
DE102013001893A1 (de) 2013-02-02 2014-08-07 Ima Klessmann Gmbh Holzbearbeitungssysteme Bekantungsvorrichtung
DE102015213358A1 (de) 2015-07-16 2017-01-19 Homag Holzbearbeitungssysteme Gmbh Zuführeinrichtung für Beschichtungsmaterial
DE102017125039B3 (de) 2017-10-26 2018-08-16 Ima Klessmann Gmbh Holzbearbeitungssysteme Kantenbandkassette für Kantenbänder
DE102017125937A1 (de) 2017-11-07 2019-05-09 Ima Klessmann Gmbh Holzbearbeitungssysteme Kantenbearbeitungsanordnung
DE102018127617A1 (de) 2018-11-06 2020-05-07 Homag Gmbh Verfahren und Vorrichtung zum Beschichten eines Werkstücks

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19955575A1 (de) 1999-11-18 2001-05-23 Brandt Kantentechnik Gmbh Verfahren und Vorrichtung zum Anhaften eines Deckmaterials an Werkstückoberflächen von fortlaufend bewegten oder stationär angeordneten platten- oder leistenförmigen Werkstücken
WO2001036168A1 (fr) * 1999-11-18 2001-05-25 Brandt Kantentechnik Gmbh Procede et dispositif pour faire adherer un materiau de recouvrement sur des surfaces de piece en forme de plaques ou de baguettes, se deplaçant en continu ou fixes
DE102019112600A1 (de) * 2019-05-14 2020-11-19 Felder Kg Vorrichtung zur Beschichtung einer Oberfläche

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