EP1764198B1 - Procédé et dispositif pour l'usinage de pièces en forme de plaque - Google Patents

Procédé et dispositif pour l'usinage de pièces en forme de plaque Download PDF

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Publication number
EP1764198B1
EP1764198B1 EP05020367A EP05020367A EP1764198B1 EP 1764198 B1 EP1764198 B1 EP 1764198B1 EP 05020367 A EP05020367 A EP 05020367A EP 05020367 A EP05020367 A EP 05020367A EP 1764198 B1 EP1764198 B1 EP 1764198B1
Authority
EP
European Patent Office
Prior art keywords
groove
workpieces
cover layer
panel
producing
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.)
Not-in-force
Application number
EP05020367A
Other languages
German (de)
English (en)
Other versions
EP1764198A1 (fr
Inventor
Otto Katz
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.)
Ledermann GmbH and Co KG
Original Assignee
Ledermann GmbH and Co KG
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
Priority to PL05020367T priority Critical patent/PL1764198T3/pl
Priority to EP05020367A priority patent/EP1764198B1/fr
Priority to ES05020367T priority patent/ES2300914T3/es
Priority to DE502005003116T priority patent/DE502005003116D1/de
Priority to AT05020367T priority patent/ATE388001T1/de
Application filed by Ledermann GmbH and Co KG filed Critical Ledermann GmbH and Co KG
Priority to DK05020367T priority patent/DK1764198T3/da
Priority to PCT/EP2006/009025 priority patent/WO2007033799A1/fr
Publication of EP1764198A1 publication Critical patent/EP1764198A1/fr
Application granted granted Critical
Publication of EP1764198B1 publication Critical patent/EP1764198B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
    • B27M3/00—Manufacture or reconditioning of specific semi-finished or finished articles
    • B27M3/04—Manufacture or reconditioning of specific semi-finished or finished articles of flooring elements, e.g. parqueting blocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27C—PLANING, DRILLING, MILLING, TURNING OR UNIVERSAL MACHINES FOR WOOD OR SIMILAR MATERIAL
    • B27C5/00—Machines designed for producing special profiles or shaped work, e.g. by rotary cutters; Equipment therefor
    • B27C5/006—Machines designed for producing special profiles or shaped work, e.g. by rotary cutters; Equipment therefor with non-rotating tools
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27F—DOVETAILED WORK; TENONS; SLOTTING MACHINES FOR WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES
    • B27F1/00—Dovetailed work; Tenons; Making tongues or grooves; Groove- and- tongue jointed work; Finger- joints
    • B27F1/02—Making tongues or grooves, of indefinite length

Definitions

  • the present invention relates to a method and an apparatus for processing plate-shaped workpieces in the region of an abrasive cover layer of the plate-shaped workpieces.
  • Such plates consist of a carrier material, for example of medium density fibreboard (MDF), high density fiberboard (HDF), chipboard o. The like., which is provided with a cover layer in the form of a laminate layer, a thin-layer veneer, a plastic layer or a thicker lacquer layer.
  • MDF medium density fibreboard
  • HDF high density fiberboard
  • cover layer in the form of a laminate layer, a thin-layer veneer, a plastic layer or a thicker lacquer layer.
  • Plates with a laminate layer of this type are used, for example, as floor panels. These panels are laterally grooved and feathered, this machining operation typically being carried out on woodworking machines in the run at a high feed speed currently in the range of 160 to 200 m / min.
  • the method disclosed therein processes plates which in addition to a core have a cover layer of a design layer, an intermediate layer and a protective top layer.
  • the protective top layer has primarily the task of minimizing abrasion, for example, when the workpieces are used as floor panels.
  • a disadvantage of these solutions is that the material present in the region of the upper layer is completely machined and furthermore a correspondingly high level of wear occurs at the tool cutting edges. Furthermore, during the machining of the abrasive covering layer, a fine-grained granular jet is produced, which due to its diffuse spreading can only be sucked off insufficiently.
  • the invention is based on the idea to minimize machining of the abrasive cover layer of the plate-shaped workpieces as much as possible.
  • the abrasive cover layer is not milled off, but is predominantly removed.
  • at least one groove is first produced in each of the plate-shaped workpieces in the area of the abrasive cover layer, in order subsequently to remove one surface section of the plate-shaped workpieces in the area of the abrasive cover layer, the removal taking place in such a way that the drawn-off surface section adjoins the at least one generated groove adjacent.
  • the at least one groove is produced with a depth which is greater than or equal to the thickness of the abrasive covering layer.
  • a particularly preferred apparatus for carrying out the method according to the invention is defined in claim 4. This allows a simple construction to achieve the advantages discussed above.
  • the groove generating device of the device according to the invention in the present invention can be equipped in many ways, is provided according to a development of the present invention that the groove generating device works by cutting and preferably has a rotationally driven grooving tool.
  • a cutting operation is still carried out, but limited to a very limited range, so that the chips produced in an economically and technically meaningful way by a suitable suction device o. The like. Can be included without causing major damage.
  • the use of a rotationally driven groove tool makes it possible to achieve a precise and precisely defined edge on the machined workpiece, which is required in particular in the area of floor panels.
  • the grooving tool which may, for example, be a rotating saw blade, according to a development of the present invention has on its outer circumference a plurality of conically shaped teeth.
  • the conical formation of the teeth reduces the risk of edge breakage in the subsequent machining of the workpiece, which could arise due to the inhomogeneity of the plate-shaped workpieces.
  • cone angles in the range of 30 ° to 60 °, in particular in the range of 40 ° to 50 ° have proven to be particularly advantageous.
  • the stripping device can also be configured in many ways in the context of the present invention. According to one embodiment of the present invention, however, it is preferred that the stripper has at least one scraper blade. With a scraper can be realized in a particularly simple construction, a clean and continuous removal of the surface portion. It is particularly preferred that the scraper blade is stationary, so that the processing device can work smoothly in continuous operation and the alignment of the scraper can be easily adjusted.
  • the stripping device has at least one sliding shoe for supporting the plate-shaped workpieces to be processed.
  • the position of the at least one sliding shoe is adjustable with respect to the at least one scraper blade.
  • the design and arrangement of the at least one scraper blade can be defined inter alia by the peel angle ⁇ , the clearance angle ⁇ and the angle of attack ⁇ . It has been shown that in the processing of plate-shaped workpieces made of wood, wood materials u. Like. A peel angle ⁇ in the range of 45 ° to 65 °, a free-cutting angle ⁇ in the range of 2 ° to 5 ° and an angle of attack ⁇ in the range of -20 ° to + 20 ° ensure trouble-free operation and a clean work result.
  • a guide device in particular a guide bar
  • the guide means contributes to the fact that the plate-shaped workpieces are not slipped, for example, when hitting the at least one scraper, but stably continue their passage through the device.
  • FIG Fig. 1 A preferred embodiment of a processing apparatus 1 according to the present invention is shown in FIG Fig. 1 shown schematically in a partial perspective view.
  • the apparatus shown is used for processing plate-shaped workpieces in the region of an abrasive cover layer, such as floor panels.
  • Such workpieces are usually made of wood, wood materials (such as MDF or HDF) or the like and also have an abrasive cover layer containing hard particles, which consist for example of alumina.
  • FIGS. 2 to 4 The construction of in Fig. 1 shown processing apparatus 1 is in the FIGS. 2 to 4 shown in more detail in a side view and two sectional views. Thereafter, the processing device 1 initially has a groove generating device 14 for producing at least one groove 17 in the plate-shaped workpieces 4 in the region of the abrasive cover layer 5. As in FIGS. 1 and 4 can best be seen, the groove generating device 14 has a groove tool 16 in the form of a so-called Ritzsägeblattts, which is driven in rotation by a motor unspecified. A preferred embodiment of the scoring saw blade 16 is shown in FIG Fig. 5 in a side view and in a sectional view shown.
  • the groove generating device 14 is designed such that the scoring saw blade 16 can be adjusted with respect to the workpiece to be machined both in the workpiece conveying direction and perpendicular thereto. As a result, on the one hand, it is achieved that with the groove generating device 14, a groove 17 can be produced in the respective plate-shaped workpiece 4, the depth of which is adjustable. Furthermore, premature wear of the scoring saw blade 16 in the area of the abrasive covering layer 5 of the respective plate-shaped workpieces 4 can be counteracted by adjusting the groove generating device.
  • the processing apparatus 1 shown further comprises a stripping device 3 for stripping a surface portion 19 of the plate-shaped workpieces in the region of the abrasive cover layer 5 and a conveying device (not shown in the figures) for conveying the plate-shaped workpieces 4 in a conveying direction which is shown in FIG Fig. 2 X is designated.
  • the conveyor may be a conveyor belt or the like in a known manner.
  • the stripper 3 of the groove generating device 14 is connected downstream in the conveying direction.
  • the peeling device 3 can be designed in the context of the present invention in many different ways, it has in the present Embodiment, a scraper blade (or a cutting blade) 9, which is arranged stationary.
  • the scraper blade has a cutting edge 10 facing the respective plate-shaped workpieces 4 and is attached to a tool carrier 8 which is adjustable with respect to the respective plate-shaped workpieces 4.
  • the position of the scraper blade 9 with respect to the plate-shaped workpieces to be machined can be adjusted so that the scraper blade 9 peels off an upper surface portion 19 adjacent to the at least one groove produced by the groove generating means 14 and its thickness greater than or equal to the thickness of the abrasive cover layer 5 is.
  • This depth is in common plate-shaped workpieces, for example in the range of 0.1 mm to 1.0 mm.
  • the scraper blade 9 engages during the withdrawal in the groove 17 formed by the groove generating device 14, wherein the depth of the scraper blade 9 is generally slightly smaller than the depth of the groove 17th
  • the stripping device 3 further comprises a sliding shoe 6 with a sliding surface 11 facing the respective plate-shaped workpieces, the position of the sliding shoe 6 or the sliding surface 11 being adjustable with respect to the scraper blade 9.
  • a chip receiving space 13 Between the shoe 6 and the scraper blade 9 is a chip receiving space 13, in which the separated from the respective plate-shaped workpieces 4 surface portion 19 is received and removed as Span 12 and optionally can be removed by a suction or discharge device, not shown.
  • the distance between the scraper and the shoe should be at least 2 mm.
  • the processing apparatus 1 comprises an upper printing apparatus 2 which applies pressure to the respective plate-shaped workpieces 4 from above during their passage through the processing apparatus 1 to stabilize and guide them.
  • the top pressure device 2 is arranged at least in the region above the scraper blade 9, which contributes to the fact that the plate-shaped workpiece is further conveyed stable during the force attack by the scraper blade 9.
  • FIG Fig. 6 A side view and a top view of a scraper blade used in the present embodiment are shown schematically in FIG Fig. 6 shown.
  • This figure illustrates in particular the clearance angle indicated by ⁇ , the peeling angle designated by ⁇ and the angle of attack of the scraper blade 9.
  • the scraper blade 9 has a peeling angle ⁇ of approximately 60 °, a clearance angle ⁇ of approximately 3 up to 4 ° and an angle of attack ⁇ of about + 20 °.
  • the positive sign of the angle of attack ⁇ makes it clear that the scraper blade can also be turned on in the other direction (with a correspondingly negative angle of attack ⁇ ).
  • the operation of the processing device 1 according to the invention takes place, for example, as follows.
  • the plate-shaped workpieces 4 are conveyed on the conveyor not shown in the conveying direction X with the abrasive cover layer 5 turned down. In this case, they first pass through the groove generating device 14 and are provided there with a groove 17 in the region of the abrasive cover layer whose depth is greater than or equal to the thickness of the abrasive layer. Subsequently, the plate-shaped workpieces 4 - continuously or discontinuously - further promoted to the stripping device 3, where the respective surface portion 19 adjacent to the at least one groove 17 produced in the region of the abrasive cover layer 5 is withdrawn. In this case, the surface portion 19 is subtracted with a thickness which is greater than or equal to the thickness of abrasive topcoat is. In this case, a chip 12 is formed which can be received and removed in the region of the chip receiving space 13.
  • the plate-shaped workpieces are further promoted and can now be provided in a known manner, for example by means of one or more milling heads, with a desired profiling, such as a tongue and groove profiling or click profiling.
  • a desired profiling such as a tongue and groove profiling or click profiling.
  • a cutting of the abrasive cover layer 5 of the respective plate-shaped workpieces is minimized, since a large part of the abrasive cover layer 5 is removed by the stripping device 3, without this coming into contact with the abrasive cover layer 5.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Turning (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Claims (12)

  1. Procédé pour l'usinage de pièces d'oeuvre (4) en forme de plaques, dans la zone d'une couche de couverture (5) abrasive des pièces d'oeuvre en forme de plaques, comprenant les étapes consistant à :
    fournir des pièces d'oeuvre (4) en forme de plaque, qui, de préférence, sont composées de bois, de matériaux ligneux ou analogues, les pièces d'oeuvre en forme de plaques étant munies d'une couche de couverture (5) abrasive en au moins une surface,
    creuser chaque fois au moins une rainure (17) dans les pièces d'oeuvre en forme de plaque, dans la zone de la couche de couverture abrasive,
    extraire chaque fois un tronçon de surface (19) des pièces d'oeuvre (4) en forme de plaques dans la zone de la couche de couverture (5) abrasive,
    l'extraction s'effectuant chaque fois après creusement de la au moins une rainure (17) et étant effectuée de manière que le tronçon de surface (19) à extraire soit limitrophe à la au moins une rainure (17) creusée.
  2. Procédé selon la revendication 1, caractérisé en ce que la au moins une rainure (17) est creusée à une profondeur supérieure ou égale à l'épaisseur de la couche de couverture (5) abrasive.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le tronçon de surface (19) est extrait avec une épaisseur supérieure ou égale à l'épaisseur de la couche de couverture (5) abrasive.
  4. Dispositif d'usinage (1) pour la mise en oeuvre du procédé selon l'une des revendications 1 à 3, comprenant :
    un dispositif de creusement de rainure (14), pour creuser au moins une rainure (17) dans les pièces d'oeuvre (4) en forme de plaques, dans la zone de la couche de couverture (5) abrasive,
    un dispositif d'extraction (3) pour extraire un tronçon de surface (19) des pièces d'oeuvre (4) en forme de plaques, dans la zone de la couche de couverture (5) abrasive, et
    un dispositif de transport pour produire un déplacement relatif, entre les pièces d'oeuvre (4) à usiner, d'une part, et le dispositif de creusement de rainure (14), ainsi que le dispositif d'extraction (3), d'autre part,
    le dispositif d'extraction (3) étant installé en aval du dispositif de creusement de rainure (14) en observant dans la direction de transport (X), et étant agencé pour extraire un tronçon de surface (19) limitrophe à au moins une rainure (17) produite par le dispositif de creusement de rainure (14).
  5. Dispositif d'usinage selon la revendication 4, caractérisé en ce que le dispositif de creusement de rainure (14) travaille avec enlèvement de copeaux et, de préférence, présente un outil de creusement de rainure (16) entraîné en rotation.
  6. Dispositif d'usinage selon la revendication 5, caractérisé en ce que l'outil de creusement de rainure (16) comprend sur sa périphérie extérieure une pluralité de dents (16') de forme conique, l'angle de conicité (δ) étant, de préférence, dans la fourchette de 30 à 60°, de façon particulièrement préférée dans la fourchette de 40 à 50°.
  7. Dispositif d'usinage selon l'une des revendications 4 à 6, caractérisé en ce que le dispositif de creusement de rainure (14) est agencé pour creuser une rainure (17), dont la profondeur est supérieure ou égale à l'épaisseur de la couche de couverture (5) abrasive.
  8. Dispositif d'usinage selon l'une des revendications 4 à 7, caractérisé en ce que le dispositif d'extraction (3) est agencé pour extraire un tronçon de surface (19) dont l'épaisseur est supérieure ou égale à l'épaisseur de la couche de couverture (5) abrasive.
  9. Dispositif d'usinage selon l'une des revendications 4 à 8, caractérisé en ce que le dispositif d'extraction présente au moins une lame de traction (9), de préférence stationnaire.
  10. Dispositif d'usinage selon la revendication 9, caractérisé en ce que le dispositif d'extraction (3) présente en outre au moins un patin glissant (6) pour le soutien des pièces d'oeuvre (4) en forme de plaques à usiner, patin dont la position, de préférence, est réglable par rapport à la au moins une lame de traction (9).
  11. Dispositif d'usinage selon la revendication 9 ou 10, caractérisé en ce que la au moins une lame de traction (9) présente un angle de taillant (β) dans la fourchette de 45 à 65° et/ou un angle de dépouille (α) dans la fourchette de 2 à 5° et/ou un angle de coupe (γ) dans la fourchette de -20 à +20°.
  12. Dispositif d'usinage selon l'une des revendications 4 à 11, caractérisé en ce qu'il présente en outre un dispositif de guidage, en particulier une lame de guidage, conçue pour s'engager dans une rainure prévue dans les pièces d'oeuvre à usiner.
EP05020367A 2005-09-19 2005-09-19 Procédé et dispositif pour l'usinage de pièces en forme de plaque Not-in-force EP1764198B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP05020367A EP1764198B1 (fr) 2005-09-19 2005-09-19 Procédé et dispositif pour l'usinage de pièces en forme de plaque
ES05020367T ES2300914T3 (es) 2005-09-19 2005-09-19 Procedimiento y dispositivo para mecanizar piezas de trabajo en forma de placa.
DE502005003116T DE502005003116D1 (de) 2005-09-19 2005-09-19 Verfahren und Vorrichtung zum Bearbeiten plattenförmiger Werkstücke
AT05020367T ATE388001T1 (de) 2005-09-19 2005-09-19 Verfahren und vorrichtung zum bearbeiten plattenförmiger werkstücke
PL05020367T PL1764198T3 (pl) 2005-09-19 2005-09-19 Sposób i urządzenie do obróbki płytowych przedmiotów obrabianych
DK05020367T DK1764198T3 (da) 2005-09-19 2005-09-19 Fremgangsmåde og indretning til bearbejdning af pladeformede emner
PCT/EP2006/009025 WO2007033799A1 (fr) 2005-09-19 2006-09-15 Procede et dispositif d'usinage de pieces en forme de plaques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05020367A EP1764198B1 (fr) 2005-09-19 2005-09-19 Procédé et dispositif pour l'usinage de pièces en forme de plaque

Publications (2)

Publication Number Publication Date
EP1764198A1 EP1764198A1 (fr) 2007-03-21
EP1764198B1 true EP1764198B1 (fr) 2008-03-05

Family

ID=35811746

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05020367A Not-in-force EP1764198B1 (fr) 2005-09-19 2005-09-19 Procédé et dispositif pour l'usinage de pièces en forme de plaque

Country Status (7)

Country Link
EP (1) EP1764198B1 (fr)
AT (1) ATE388001T1 (fr)
DE (1) DE502005003116D1 (fr)
DK (1) DK1764198T3 (fr)
ES (1) ES2300914T3 (fr)
PL (1) PL1764198T3 (fr)
WO (1) WO2007033799A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013006262A1 (de) * 2013-04-11 2014-10-16 Ima Klessmann Gmbh Holzbearbeitungssysteme Vorrichtung und Verfahren zur Bearbeitung plattenförmiger Werkstücke
KR102305198B1 (ko) * 2013-05-02 2021-09-28 가또오모꾸자이 고오교오 가부시끼가이샤 화장재의 트리밍 장치, 피복 제품의 제조 장치 및 제조 방법
DE102014207247A1 (de) * 2014-04-15 2015-10-15 Homag Holzbearbeitungssysteme Ag Nachbearbeitungswerkzeug
BE1027083B1 (nl) * 2019-02-26 2020-09-24 Flooring Ind Ltd Sarl Glij- of drukschoen voor een doorloopfreesmachine en werkwijze voor het vervaardigen van panelen

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2596365A (en) * 1947-03-07 1952-05-13 James E Bresnahan Grooving attachment for resawing machines
AT351746B (de) * 1977-09-26 1979-08-10 Lehbrink Gmbh & Co Kg W Vorrichtung zum abziehen von im kanten- oder abbiegungsbereich plattenfoermiger werkstuecke angeordneten folienstreifen
BE1010487A6 (nl) * 1996-06-11 1998-10-06 Unilin Beheer Bv Vloerbekleding bestaande uit harde vloerpanelen en werkwijze voor het vervaardigen van dergelijke vloerpanelen.
DE29611587U1 (de) * 1996-07-03 1996-09-12 Ledermann Gmbh, 72160 Horb Vorrichtung zur Vorzerspanung der Kantenbereiche von fortlaufend bewegten Werkstücken
DE29707286U1 (de) * 1997-04-23 1997-08-14 Ledermann Gmbh, 72160 Horb Werkzeug zur Bearbeitung von fortlaufend bewegten Werkstücken
IT1307424B1 (it) * 1999-04-29 2001-11-06 Costa S P A A Metodo per la profilatura di listelli per parquet e macchinasquadratrice atta a realizzare tale metodo.

Also Published As

Publication number Publication date
PL1764198T3 (pl) 2008-07-31
ES2300914T3 (es) 2008-06-16
DE502005003116D1 (de) 2008-04-17
EP1764198A1 (fr) 2007-03-21
ATE388001T1 (de) 2008-03-15
DK1764198T3 (da) 2008-06-16
WO2007033799A1 (fr) 2007-03-29

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