EP3572196B1 - Dispositif de pressage destiné au pressage d'un matériau de revêtement contre les pièces à usiner en forme de plaque ou de baguette - Google Patents

Dispositif de pressage destiné au pressage d'un matériau de revêtement contre les pièces à usiner en forme de plaque ou de baguette Download PDF

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Publication number
EP3572196B1
EP3572196B1 EP19175597.4A EP19175597A EP3572196B1 EP 3572196 B1 EP3572196 B1 EP 3572196B1 EP 19175597 A EP19175597 A EP 19175597A EP 3572196 B1 EP3572196 B1 EP 3572196B1
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EP
European Patent Office
Prior art keywords
pressing
coating material
force
actuator
pressing roller
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Active
Application number
EP19175597.4A
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German (de)
English (en)
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EP3572196A1 (fr
Inventor
Felix Schatz
Markus Blattner
Friedrich Schleeh
Hermann Nickel
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
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Homag GmbH
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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
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D5/00—Other working of veneer or plywood specially adapted to veneer or plywood
    • B27D5/006—Trimming, chamfering or bevelling edgings, e.g. lists

Definitions

  • the present invention relates to a pressing device for pressing a coating material against work pieces in the form of plates or strips according to the preamble of claim 1.
  • a pressing device for pressing a coating material against work pieces in the form of plates or strips according to the preamble of claim 1.
  • Such a device is known from document EP2181816 A1 known.
  • edge material edge thickness, edge height, clamping of the workpiece and also the shape of the component
  • different reaction forces arise between the roller and the workpiece.
  • the position of the roller is also important, especially for edging. The more precisely the edge is positioned in relation to the pressure roller, the better the quality will be beginning of edge.
  • today's systems are difficult to position in relation to one another.
  • the present invention aims to eliminate or at least partially alleviate the above problems of the prior art.
  • a pressing device for pressing a coating material against plate-shaped or strip-shaped workpieces which preferably consist at least in sections of wood, wood-based materials, plastic or the like, has a pressure roller.
  • This pressure roller is a roller for pressing the coating material against the workpieces.
  • Such a pressure roller can, for example, be heatable and must be sufficiently strong to press a coating material (which could for example have the form of an edge band) against the workpieces so firmly that the coating material can be connected to them.
  • the pressing device according to the invention also has a holder which supports the pressure roller so that it can rotate about an axis.
  • This axis is typically the central axis of the pressure roller.
  • the pressing device also has a force regulation device which is designed to control or regulate a force with which the pressure roller presses against the coating material.
  • This force regulating device can be a traversing device that is designed to press the pressure roller against the coating material.
  • This force can be regulated separately, which leads to an increased quality of the workpieces produced.
  • the possibility of controlling the pressure forces very well also increases the quality of the gluing (Verleim-QW).
  • the contact pressure can be set electronically and is therefore part of the program in addition to the actual contour. This increases flexibility. The contact pressure setting can be used again later. In addition, with very small objects to be coated that are difficult to clamp, you do not have to change anything in the basic setting of the unit afterwards.
  • the force regulation device comprises an actuator which is mounted in the holder and has a rotatably mounted end piece.
  • This end piece serves as a bearing for the pressure roller, which is mounted eccentrically and rotatably in this end piece.
  • This storage can take place, for example, via a shaft inserted between the end piece and the pressure roller.
  • the actuator is designed to apply torque to the end piece when actuated, allowing the pressure roller to apply a compressive force against the coating material.
  • a rotation of the end piece means that the pressure roller, which is supported by the end piece, can exert a force on the coating material due to the rotation of the actuator.
  • This force can be set externally by controlled actuation of the actuator and can also be readjusted if necessary when this force is detected.
  • the path of the center point of the aggregate ie the center point of the end piece
  • the roller on the other hand, would be driven by an actuator via the lever. This presses the roller against the workpiece.
  • the unit moves around the workpiece at a distance equal to the radius of the pressure roller.
  • the lever which is provided by the eccentric bearing of the pressure roller, creates a moment that can be controlled in such a way that the contact pressure is essentially constant (even when rotating around the C-axis, which is the axis of rotation).
  • a counterforce builds up, which is used to press the coating material on.
  • the central axis of the pressure roller is offset with respect to the axis of rotation of the end piece by a distance in the range of greater than 1mm, preferably 4mm to 15mm, preferably 8mm to 12mm, more preferably about 10mm.
  • the resulting small lever allows you to work with a comparatively small moment (e.g. less than 5 Nm) in order to obtain relatively large contact forces, for example in the range of 500 N. In this respect, it is possible to miniaturize the actuator while at the same time being able to exert a high pressing force.
  • a device for supplying the coating material is provided, this device being designed in such a way that the eccentrically mounted pressure roller acts in the form of a rocker arm.
  • This embodiment of the pressure device with the pressure roller in the form of a rocker arm causes the pressure roller to lag behind the end piece. This reinforces the advantages mentioned above with regard to the eccentric mounting of the pressure roller.
  • a rocker arm is understood to mean that, in the direction of movement relative to the workpiece to be coated, the point at which the pressure roller exerts a force on the workpiece lies behind the axis of rotation of the end piece which supports the pressure roller. Since the lever ratios are known and constant, a constant reaction force can be generated between the workpiece and the roller. The torque can be adjusted via software and continuously and can be limited, which is advantageous for good control of the pressing process.
  • the actuator includes a servo motor, which can have an electric drive, for example.
  • a servomotor means that the roller can be positioned at any drag angle with respect to the edge to be coated and also at any adjustable distance from the contour. This makes it easier to bring the edge to the workpiece.
  • the servo motor is preferably designed to set a torque desired by a user and/or is designed to compensate for the friction torques and/or cogging torques. This is beneficial for the quality of the connection. The possibility of setting a desired torque is advantageous for controlling the pressing device and leads to increased quality of the components produced.
  • An electric servo motor has the advantage that the roller can be positioned at a specific angle in a controlled manner by the servo drive. This is advantageous when applying the edge to the workpiece.
  • the actuator is a pneumatic actuator. This preferably uses a proportional valve and a device to limit the pressure of the pneumatic fluid in order to apply torque to the end piece. Such a pressing device and such an actuator are easy to implement.
  • a coating device for plate-shaped or strip-shaped workpieces which preferably consist at least in sections of wood, wood-based materials, plastic or the like, has a pressing device according to one of the preceding claims.
  • the coating device is preferably designed to independently control or regulate the position and orientation of the pressure roller with respect to the workpieces and the force with which the pressure roller presses against the workpieces.
  • the pressing device 100 has a base 110 on which a pivoting device 112 is provided. With this pivoting device 112, a bearing 116 can be pivoted with respect to a pivot point. On this bearing 116, a carriage 115 is slidably mounted. The position of this carriage 115 with respect to the bearing 116 can be adjusted by means of a pneumatic actuator 114. A pressure roller 118 (shown schematically) is provided on the carriage 115 . By moving the carriage 115 with respect to the bearing 116, the position of the pressure roller 118 with respect to the pivot point of the pivoting device 112 can be shifted. Thus, the pressure roller 118 can be pressed against a coating material to be pressed in a controlled manner, for example by the force exerted by the actuator 114 being able to be controlled.
  • the aim is that the force of the pressure roller 118 is always at right angles to the workpiece to be coated through the guide 116 and the carriage 115 .
  • the pressure roller 118 repeatedly breaks out to the front or to the rear, so that this pressing at a right angle is not always guaranteed. This then leads to the fact that by the force exerted by pneumatic actuator 114 is not always the desired force, but tends to be less than that force.
  • the pressing device 200 has a holder 210, the position of which can be controlled in relation to the workpiece, for example by means of a CNC device.
  • an actuator 202 is provided within this bracket 210, which has an end piece 203, which - is pivotally mounted - in this case by ball bearings.
  • a pivoting axis or central axis A of the actuator 202 extends through the end piece 203.
  • the pressure roller 218 is eccentrically offset with respect to this central axis A, but aligned parallel to it.
  • Its central axis A' is offset by a few millimeters with respect to the central axis A of the end piece 203, so that this roller is eccentric with respect to the end piece 203.
  • FIG. 3 shows schematically a second embodiment of the pressing device according to the invention.
  • the pressing device 300 is a variant of the 2 shown pressing device, which is why only the differences to this embodiment are explained here.
  • a pneumatic actuator 302 is provided within a holder 310 .
  • a pressure roller 318 is also mounted offset with respect to the central axis A on its end piece 303 and can be rotated about the central axis A′.
  • a third embodiment is in 4 shown.
  • FIG 5 shows the third embodiment of the present invention from a different perspective.
  • the pressing device 400 has a holder 410 and an electric actuator 402 in the form of a servo motor.
  • Tests with a prototype have shown that the contact pressure forces can be set steplessly and independently of the geometry (C-axis position) by the pressure roller 418 on the component. Such tests have also shown that the dynamics are sufficiently large so that theoretically any force curves can be set on the component (more or less pressure on the radius and impact). It was only necessary to adjust the torque limit as desired. Such a control can take place, for example, in that the value of the torque is transmitted to the controller at periodic intervals. It is not necessary to change the CNC path. Process monitoring can be easily implemented using the torque limitation and querying of the torque limitation.
  • FIG. 6 shows a coating device 500 according to the invention.
  • This coating device has a holder 510 on which a pressure roller 518 is provided.
  • this coating device one of the Figures 2 to 5 shown devices are installed.
  • this coating device has a device 524 for supplying the coating material.
  • This device for supplying the coating material is designed in such a way that the eccentrically mounted pressure roller 518 acts in the form of a rocker arm.
  • the pressing device 600 has a holder 610 which encloses a plate 626 which is positioned relative to the holder 610 is rotatably mounted on ball bearings. This plate 626 supports a shaft 622 which extends through an opening 623 of the holder 610 so that it can pivot with respect to the plate 626 . Within this opening 623 (here two) elastomeric rings 620 are provided. Furthermore, force measuring devices 624 are provided in the form of strain gauges. In order to measure the force using these strain gauges, four webs are attached around the bearing point of the elastomer ring 620, on each of which two sensors offset by 90° in the X and Y directions measure the force acting on one another.
  • the roller 618 is calibrated during a referencing process in order to compensate for any fluctuations and aging effects of the elastomer.
  • the deviation of the actual force value from the target value is used in a control circuit to carry out a correction.
  • the current tool radius (distance to the workpiece) is deliberately changed in the control (CNC) in order to obtain more or less contact pressure.
  • CNC control
  • Such a process is cyclical and very dynamic.
  • the pressure roller 618 is again mounted via ball bearings. This pressure roller 618 can thus rotate with respect to the shaft 622 and at the same time exert a force on the coating material.
  • a moving device 630 is also provided, which is only shown schematically in the present case. Through this traversing device 630, the holder 610 and thus the pressure roller 618 can be shifted in a controlled manner with respect to the workpiece to be coated.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Coating Apparatus (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Claims (6)

  1. Dispositif de pressage (200) pour le pressage d'un matériau de revêtement contre des pièces à usiner en forme de plaque ou de baguette qui se composent de préférence au moins par sections de bois, matériaux dérivés du bois, matière plastique ou similaires, avec :
    - un rouleau de pressage (218) pour le pressage du matériau de revêtement contre les pièces à usiner,
    - un support (210) qui loge de manière rotative le rouleau de pressage (218) autour d'un axe (A'), et
    - un appareil de régulation de force qui est configuré afin de commander ou réguler une force, avec laquelle le rouleau de pressage presse contre le matériau de revêtement,
    caractérisé en ce que
    l'appareil de régulation de force comporte un actionneur (202) logé dans le support qui présente un embout (203) logé de manière rotative qui loge de manière excentrée et rotative le rouleau de pressage (218), dans lequel l'actionneur est configuré afin d'exercer lors de l'actionnement un couple sur l'embout; de sorte que le rouleau de pressage (218) exerce une force de pression contre le matériau de revêtement.
  2. Dispositif de pressage selon la revendication 1, dans lequel
    l'axe médian (A') du rouleau de pressage est en déport par référence à l'axe de rotation (A) de l'embout d'une distance dans la plage de 8 mm à 12 mm, de préférence à peu près de 10 mm.
  3. Dispositif de pressage selon la revendication 1 ou 2, de plus avec un dispositif (524) d'amenée du matériau de revêtement, dans lequel le dispositif d'amenée du matériau de revêtement est configuré de sorte que le rouleau de pressage (218) logé de manière excentrée agisse sous la forme d'un basculeur.
  4. Dispositif de pressage selon l'une quelconque des revendications 1 à 3, dans lequel l'actionneur comporte un servomoteur qui est de préférence configuré afin de régler un couple souhaité par un utilisateur et/ou dans lequel celui-ci est configuré afin de compenser les couples de friction et/ou couples d'encliquetage.
  5. Dispositif de pressage selon l'une quelconque des revendications 1 à 3, dans lequel l'actionneur est un actionneur pneumatique (302) qui utilise de préférence une soupape proportionnelle et un appareil de limitation de pression du fluide pneumatique afin d'appliquer un couple sur l'embout.
  6. Dispositif de revêtement pour des pièces à usiner en forme de plaque ou de baguette qui se composent de préférence au moins par sections de bois, matériaux dérivés du bois, matière plastique ou similaires, avec :
    un dispositif de pressage selon l'une quelconque des revendications précédentes,
    dans lequel le dispositif de revêtement est de préférence configuré afin de commander la position et l'orientation du rouleau de pressage par référence aux pièces à usiner et la force, avec laquelle le rouleau de pressage presse contre les pièces à usiner, indépendamment les unes des autres.
EP19175597.4A 2018-05-23 2019-05-21 Dispositif de pressage destiné au pressage d'un matériau de revêtement contre les pièces à usiner en forme de plaque ou de baguette Active EP3572196B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018208062.3A DE102018208062A1 (de) 2018-05-23 2018-05-23 Andrückvorrichtung zum Andrücken eines Beschichtungsmaterials gegen platten- oder leistenförmige Werkstücke

Publications (2)

Publication Number Publication Date
EP3572196A1 EP3572196A1 (fr) 2019-11-27
EP3572196B1 true EP3572196B1 (fr) 2023-07-19

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EP19175597.4A Active EP3572196B1 (fr) 2018-05-23 2019-05-21 Dispositif de pressage destiné au pressage d'un matériau de revêtement contre les pièces à usiner en forme de plaque ou de baguette

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EP (1) EP3572196B1 (fr)
DE (1) DE102018208062A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019113932A1 (de) * 2019-05-24 2020-11-26 Homag Gmbh Verfahren zum Beschichten eines Bauteils sowie Beschichtungsvorrichtung
DE102020130733A1 (de) * 2020-11-20 2022-05-25 Ima Schelling Deutschland Gmbh Andrucksystem, Holzverarbeitungsmaschine und Verfahren zum Betrieb einer solchen
DE102021103106A1 (de) 2021-02-10 2022-08-11 Homag Gmbh Bearbeitungsvorrichtung sowie Verfahren zum Betrieb einer Bearbeitungsvorrichtung
DE102021103136A1 (de) 2021-02-10 2022-08-11 Ima Schelling Deutschland Gmbh Vorrichtung zum Beschichten der Schmalseite von plattenförmigen Werkstücken und Verfahren zum Auftragen von Haftmittel
EP4088897B1 (fr) * 2021-05-12 2023-12-20 IMA Schelling Deutschland GmbH Dispositif, en particulier machine à plaquer sur chants

Citations (3)

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EP0587102A1 (fr) * 1992-09-11 1994-03-16 KARL M. REICH MASCHINENFABRIK GmbH Fraiseuse de bonds avec fraise
EP2181816A1 (fr) * 2008-11-03 2010-05-05 Brandt Kantentechnik GmbH Appareil d'usinage
EP2392438A1 (fr) * 2010-06-02 2011-12-07 Homag Holzbearbeitungssysteme AG Dispositif de traitement

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DE1453336A1 (de) * 1962-01-31 1970-04-09 Dimter Erwin Umleime-Vorrichtung zur Bearbeitung von Raendern bei flachen Werkstuecken
DE2041706A1 (de) * 1969-09-03 1971-03-04 Tos Svitavy N P Vorrichtung zum Ankleben eines Furniers an Flaechen von Moebelteilen
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US6358356B1 (en) * 1999-11-01 2002-03-19 Linear Products Inc. Heated wheel for application of heat-activated or pressure sensitive precoated adhesive tape or string
DE10100516A1 (de) * 2001-01-08 2002-07-11 Josef Schiele Ohg Verfahren und Vorrichtung zum Glätten der Kantenflächen von Werkstücken
ITPN20030040A1 (it) * 2003-06-20 2004-12-21 Bortolini Engineering Snc Macchina bordatrice-refilatrice di pannelli.
DE202006020669U1 (de) * 2005-11-23 2009-07-02 Homag Holzbearbeitungssysteme Ag Vorrichtung zur Beschichtung von Bauteilen
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Publication number Priority date Publication date Assignee Title
EP0587102A1 (fr) * 1992-09-11 1994-03-16 KARL M. REICH MASCHINENFABRIK GmbH Fraiseuse de bonds avec fraise
EP2181816A1 (fr) * 2008-11-03 2010-05-05 Brandt Kantentechnik GmbH Appareil d'usinage
EP2392438A1 (fr) * 2010-06-02 2011-12-07 Homag Holzbearbeitungssysteme AG Dispositif de traitement

Also Published As

Publication number Publication date
EP3572196A1 (fr) 2019-11-27
DE102018208062A1 (de) 2019-11-28

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