EP3772399B1 - End trimmer assembly for edgebanding machines to edgeband panels made of wood or the like - Google Patents

End trimmer assembly for edgebanding machines to edgeband panels made of wood or the like Download PDF

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Publication number
EP3772399B1
EP3772399B1 EP20189437.5A EP20189437A EP3772399B1 EP 3772399 B1 EP3772399 B1 EP 3772399B1 EP 20189437 A EP20189437 A EP 20189437A EP 3772399 B1 EP3772399 B1 EP 3772399B1
Authority
EP
European Patent Office
Prior art keywords
side face
electric motor
copy
copy attachment
panels
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.)
Active
Application number
EP20189437.5A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3772399A1 (en
Inventor
Paolo Bernardi
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.)
Biesse SpA
Original Assignee
Biesse SpA
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Filing date
Publication date
Application filed by Biesse SpA filed Critical Biesse SpA
Publication of EP3772399A1 publication Critical patent/EP3772399A1/en
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Publication of EP3772399B1 publication Critical patent/EP3772399B1/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27DWORKING VENEER OR PLYWOOD
    • B27D5/00Other working of veneer or plywood specially adapted to veneer or plywood
    • B27D5/006Trimming, chamfering or bevelling edgings, e.g. lists

Definitions

  • This invention relates to an edgebanding machine to edgeband panels made or wood or the like according to the preamble of claim 1.
  • Such a machine is known from the document IT PN20 080 070 A1 .
  • Each panel has two larger side faces parallel to each other, two first smaller side faces parallel to each other and perpendicular to the larger side faces, and two second smaller side faces parallel to each other and perpendicular to the first smaller side faces.
  • At least one of the second smaller side faces is provided with a finishing edge that normally has two opposite end portions, each of which projects from a relative first smaller side face in a first direction, which is orthogonal to the first smaller side face.
  • the end trimmer assembly comprises a support frame and, for each end portion of the finishing edge, a corresponding end trimming unit.
  • Each end trimming unit comprises a slide coupled in a sliding manner to the support frame to move straight along the support frame in the first direction; a copy attachment mounted on the slide and designed to be arranged in contact, in use, with the first smaller side face; and a cutting device mounted on the slide to move in a second direction transverse to the first direction and parallel to its first smaller side face and to cut at least part of the end portion of the finishing edge.
  • the copy attachment is coupled to the slide in a sliding manner to move in a third direction inclined in relation to the first direction between an operating position, wherein the copy attachment is arranged inside a feeding path of the panels in the first direction and in contact with the first smaller side face, and a rest position, wherein the copy attachment disengages the first smaller side face and is arranged outside the feeding path of the panels.
  • the copy attachment is moved between its operating position and its rest position by a pneumatic actuator mounted on the slide and provided with an output rod connected to the copy attachment.
  • the known end trimmer assemblies of the type described above have some drawbacks mainly due to the fact that the pneumatic actuators used to move the copy attachments between their operating positions and their rest positions involve relatively long times for moving the copy attachments, are unable to selectively control the operating position of the copy attachments and, therefore, the part of each end portion that is separated from the finishing edge, and have, therefore, relatively reduced flexibility and versatility.
  • the object of this invention is to provide an end trimmer assembly for edgebanding machines to edgeband panels made of wood or the like, which is free from the drawbacks described above and simple and inexpensive to manufacture.
  • an end trimmer assembly for edgebanding machines to edgeband panels made of wood or the like is provided as claimed in the appended claims.
  • the reference numeral 1 indicates, as a whole, an end trimmer assembly for finishing substantially flat panels 2 made of wood or the like.
  • each panel 2 has a substantially parallelepiped shape, and is delimited by two larger side faces 3 parallel to each other, by two smaller side faces 4 parallel to each other and perpendicular to the faces 3, and by two smaller side faces 5 parallel to each other and perpendicular to the faces 3 and 4.
  • At least one of the faces 4 is provided with a finishing edge 6 that has, in its initial configuration, two opposite end portions 7, each of which projects from a corresponding face 5 in a horizontal direction 8 that is perpendicular to the faces 5.
  • the end trimmer assembly 1 comprises an elongated frame 9, which extends in the direction 8, and supports two end trimming units 10, each of which is associated with a corresponding portion 7.
  • Each unit 10 comprises a horizontal slide 11, which is coupled in a sliding manner to the frame 9 to make, in relation to the frame 9 and under the thrust of an electric motor not shown, straight movements in the first direction 8, and supports a cutting device 12 and a front copy attachment 13.
  • the device 12 comprises an electrospindle 14, which extends in the direction 8, and is coupled in a sliding manner to the slide 11 to make, in relation to the slide 11 and under the thrust of an electric motor not illustrated, straight movements in a direction 15 transverse to the direction 8 and parallel to the faces 5.
  • the electrospindle 14 is equipped with an output shaft (not illustrated), which has a fitted cutting blade 16 mounted so as to rotate around a rotation axis 17 that is substantially parallel to the direction 8.
  • the copy attachment 13 is coupled in a sliding manner to a guide 18, which is formed on the slide 11, and extends in a direction 19 that is inclined according to an angle ranging between 0° and 90° in relation to the direction 8.
  • the copy attachment 13 is coupled, in addition, by means of a screw-nut coupling, to an output shaft 20 of an electric motor 21 mounted to rotate about a rotation axis 22 parallel to the direction 19.
  • the copy attachment 13 is moved by the motor 21 in the direction 19 between a lowered operating position (illustrated in dashed lines in Figure 3 ), wherein the copy attachment 13 projects inside a feeding path P for the panels 2 in the direction 8 and is arranged in contact with the corresponding face 5, and a raised rest position ( Figures 1 and 2 ), wherein the copy attachment 13 disengages the corresponding face 5 and is arranged outside the path P.
  • the electric motor (not illustrated) of the slide 11, the electric motor (not illustrated) of the electrospindle 14, and the electric motor 21 of the copy attachment 13 are each connected to a corresponding control member (not illustrated), in particular an encoder, for controlling an angular position of the corresponding output shaft.
  • the above-mentioned encoders are connected to an electronic control unit 23 configured to control the operation of each electric motor as a function of a signal coming from the corresponding encoder (not illustrated).
  • the motor 21 is driven by the control unit 23 so as to selectively control the operating position of the copy attachment 13, that is to say the position of the copy attachment 13 in relation to the blade 16 in the direction 8 and, thus, the quantity of end portion 7 separated from the finishing edge 6.
  • the panels 2 are moved forward in the direction 8 to allow each end trimming unit 10, combining the movements of the corresponding slide 11 in the direction 8, the movements of the corresponding electrospindle 14 in the direction 15, and the movements of the corresponding copy attachment 13 in the direction 19, to separate at least part of the corresponding end portion 7 from the finishing edge 6.
  • the end trimmer assembly 1 has some advantages mainly deriving from the fact that the electric motors 21 make it possible to move the copy attachments 13 between their operating positions and their rest positions with relatively reduced moving times, to enable the selective control of the operating position of the copy attachments 13 and, therefore, the part of each portion 7 separated from the edge 6, and to have, therefore, relatively high flexibility and versatility.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Details Of Cutting Devices (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Milling, Drilling, And Turning Of Wood (AREA)
EP20189437.5A 2019-08-06 2020-08-04 End trimmer assembly for edgebanding machines to edgeband panels made of wood or the like Active EP3772399B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102019000014130A IT201900014130A1 (it) 2019-08-06 2019-08-06 Gruppo intestatore per macchine per la bordatura di pannelli di legno o simili

Publications (2)

Publication Number Publication Date
EP3772399A1 EP3772399A1 (en) 2021-02-10
EP3772399B1 true EP3772399B1 (en) 2024-05-29

Family

ID=69158169

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20189437.5A Active EP3772399B1 (en) 2019-08-06 2020-08-04 End trimmer assembly for edgebanding machines to edgeband panels made of wood or the like

Country Status (2)

Country Link
EP (1) EP3772399B1 (it)
IT (1) IT201900014130A1 (it)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3800021A1 (de) * 2019-10-02 2021-04-07 HOMAG GmbH Kantenfräsaggregat, holzbearbeitungseinrichtung mit einem kantenfräsaggregat sowie verfahren zum bearbeiten von plattenförmigen werkstücken

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2610711A1 (de) * 1976-03-13 1977-09-15 Ludolf Stegherr Einrichtung zum fraesen von umleimern oder ueberstehenden flaechenbelaegen
ITPN20080070A1 (it) * 2008-09-30 2010-04-01 Bortolini Engineering S N C Centro di bordatura automatica di pannelli con profili perimetrali diversi

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3800021A1 (de) * 2019-10-02 2021-04-07 HOMAG GmbH Kantenfräsaggregat, holzbearbeitungseinrichtung mit einem kantenfräsaggregat sowie verfahren zum bearbeiten von plattenförmigen werkstücken

Also Published As

Publication number Publication date
EP3772399A1 (en) 2021-02-10
IT201900014130A1 (it) 2021-02-06

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