EP1964654A2 - Abrundungsmaschine für Holzpaneele - Google Patents

Abrundungsmaschine für Holzpaneele Download PDF

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Publication number
EP1964654A2
EP1964654A2 EP08101634A EP08101634A EP1964654A2 EP 1964654 A2 EP1964654 A2 EP 1964654A2 EP 08101634 A EP08101634 A EP 08101634A EP 08101634 A EP08101634 A EP 08101634A EP 1964654 A2 EP1964654 A2 EP 1964654A2
Authority
EP
European Patent Office
Prior art keywords
carriage
head
panel
rounding machine
machine
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Withdrawn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
EP08101634A
Other languages
English (en)
French (fr)
Other versions
EP1964654A3 (de
Inventor
Lino Montorfano
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.)
Bi-Matic Srl
Original Assignee
Bi-Matic Srl
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 Bi-Matic Srl filed Critical Bi-Matic Srl
Publication of EP1964654A2 publication Critical patent/EP1964654A2/de
Publication of EP1964654A3 publication Critical patent/EP1964654A3/de
Withdrawn legal-status Critical Current

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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
    • B27D5/006—Trimming, chamfering or bevelling edgings, e.g. lists

Definitions

  • the present invention relates to a machine for rounding the edges of wooden panels and to a method for rounding edges by means of a machining head. It relates in particular to a rounding machine for wooden panels able to effect both front and rear edge rounding, applied to a machine of the type comprising a conveyor belt.
  • An object of the present invention is to provide a rounding machine and a rounding method particularly suitable for conveyor belt-type machines, able to machine in an optimal manner panels with very rounded edges and panels with less rounded or sharp edges, to produce perfect copying of the profile of such panels.
  • the rounding machine shown in Figure 1 is intended to be mounted on a panel edging machine equipped with a conveyor belt, not shown, which acts as a support surface for the panel to be machined.
  • a translating carriage 2 is movable parallel to the conveyor belt on a pair of guides 3 fixed to the edging machine structure (not shown).
  • the movement of the translating carriage is imposed by a gearmotor 4 which rotates a sprocket 5 engaging a chain 6 stretched between said sprocket 5 and an idle wheel 7; this chain is fixed in known manner to the translating carriage 2.
  • the gearmotor 4 is controlled by a PLC in such a manner as to synchronize the translation speed of the carriage 2 with the translation speed of the panel 50 set by the conveyor belt.
  • a first carriage 9 is mounted, slidable on guides 8, on the translating carriage 2.
  • the guides 8 of the first carriage are parallel to the guides 3 of the translating carriage. In this manner the first carriage is movable on the guides 8 along an axis A parallel to one side 51 of the panel being machined (and hence longitudinally to the panel 50), and in particular to that panel side 51 facing the machining head.
  • the piston rods 11 of two opposing single-acting pneumatic cylinders 10 are fixed to the first carriage 9.
  • a flange 13 is mounted supporting a gearmotor 12, on the shaft of which a cam element 14 is mounted consisting of a round plate on which a pin 16 with a ball bearing is mounted.
  • a cam element 14 is mounted consisting of a round plate on which a pin 16 with a ball bearing is mounted.
  • the pin cooperates with a projection 18 provided in an appendix 19 rigid with the first carriage 9.
  • the pin 16 thrusts against the projection 19A and moves the carriage in a controlled manner against the pneumatic cylinder 10 which opposes this movement; these cylinders 10 are always active and under pressure.
  • a pair of further guides 19 are mounted on the first carriage 9, perpendicular to the guides 8 of the first element.
  • a second carriage 20 is slidably mounted on these further guides 19 and driven along the axis of these guides 19 (which is transverse to the longitudinal axis of the panel; the transverse axis is represented by B in Figures 4 and 5 ), by a double-acting pneumatic cylinder 21.
  • the speed of movement of said second carriage is controlled by a hydraulic speed regulator 22 associated with the second carriage 20 and mounted parallel to the pneumatic actuator 21.
  • the second carriage 20 supports a pair of guides 25 (of which only one is visible in Figure 3 ), on which a third carriage 23 slides, translationally driven along said guides 25 by a double-acting pneumatic cylinder 24.
  • the carriage 23 is substantially supported by said pneumatic cylinder 24, which controls its position.
  • the guides 25 are parallel to the guides 19 of the second carriage.
  • the carriage 23 presents a pair of bearings 25 housing guides 26 rigid with a fourth carriage 27 to which a milling head 28 is secured by a dovetail slide 29.
  • the head is fixed in position on the dovetail slide by a quick-release device 30.
  • the carriage 23 is driven by a double-acting pneumatic positioning cylinder 35, which substantially maintains a head aligning feeler 31 substantially abutting against the side of the panel.
  • the milling head 28 presents, coaxial to its milling cutter 33, a transverse feeler 32 consisting substantially of a ball bearing.
  • a suction cover 45 is provided about the milling cutter and is connected to a suction source to remove shavings deriving from the panel machining.
  • the rounding machine of the present invention operates in the following manner.
  • a panel (for example that shown in Figure 4 ) is disposed on the conveyor belt which carries it in front of the rounding unit, the panel travelling at constant speed.
  • the PLC which controls the unit operates the translation motor 4.
  • the carriage 2 and consequently the head 28 begin to travel along the side of the panel at its own speed; the sensor is located in a position such that the head travels in proximity to the first edge of the panel, but slightly withdrawn from it.
  • the pneumatic positioning cylinder 35 is then operated to cause the alignment feeler 31 to abut against the panel; at the same time, the panel 21 is pressurized to bring the feeler 32 into contact with the panel surface.
  • the PLC operates the motor 12, and consequently the cam 15, which moves the first carriage 9 in the panel advancement direction, causing the transverse feeler 32 to slide along the panel surface.
  • the milling cutter is rotated by a motor integrated into the head, to machine the panel edge 53.
  • the feeler 32 advances until it reaches the panel edge 52, which the milling head machines vertically.
  • the edge 52 has been exceeded (see Figure 4 )
  • the feeler 32 continues to be urged downwards by the pressure present in the cylinder 21, and hence tends to lose contact with the panel lower edge 59.
  • the pneumatic cylinder 24 operates to urge the third carriage 23, i.e. the machining head 28, in the opposite direction to that imposed by the pneumatic cylinder 21, to thus enable the feeler to remain in contact with the lower edge 59 of the panel, and hence carry out perfect machining.
  • the hydraulic speed regulator 22 intervenes to enable the head to advance along the machining profile with constant speed along the transverse axis B, whatever the pressure present in the pneumatic cylinder 21.
  • the pin 13 disengages from the appendix 18 and the pneumatic cylinder 10 returns the first carriage 9 to its rest position.
  • the milling cutter simultaneously machines the lower edge of the panel 59.
  • feed is removed from the double-acting cylinder 21 and the feeler 32 rests in its rest position on a guide (not shown) present on the cover of the edging machine. In this position the milling cutter is distant from the panel.
  • Variants of the present rounding machine can easily be conceived. Hence if the machine on which the rounding machine is installed does not present a conveyor belt, it is not necessary to provide a translating carriage 2.
  • the gearmotor 12 is not present, in its place there being provided a linkage directly operated by the movement of the translating carriage 2, for example by a pinion/rack engagement operating with a free wheel or with an electromagnetic clutch.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Milling, Drilling, And Turning Of Wood (AREA)
  • Rod-Shaped Construction Members (AREA)
EP08101634A 2007-02-28 2008-02-14 Abrundungsmaschine für Holzpaneele Withdrawn EP1964654A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI20070392 ITMI20070392A1 (it) 2007-02-28 2007-02-28 Arrotondatore per pannelli in legno

Publications (2)

Publication Number Publication Date
EP1964654A2 true EP1964654A2 (de) 2008-09-03
EP1964654A3 EP1964654A3 (de) 2008-12-10

Family

ID=39469150

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08101634A Withdrawn EP1964654A3 (de) 2007-02-28 2008-02-14 Abrundungsmaschine für Holzpaneele

Country Status (2)

Country Link
EP (1) EP1964654A3 (de)
IT (1) ITMI20070392A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2689903A1 (de) 2012-07-23 2014-01-29 SCM Group Tecmatic Maquinas e Equipamentos Ltda Abrundungs- und Beschneidungsgruppe für Kanten von Platten
EP2821171A1 (de) * 2013-07-04 2015-01-07 Homag Holzbearbeitungssysteme GmbH Bearbeitungsvorrichtung mit einer Beförderungseinrichtung und einer Bearbeitungseinrichtung

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10124307C1 (de) * 2001-05-17 2002-06-13 Klessmann Ima Gmbh Holzbearbei Kantenfräsaggregat für eine programmgesteuerte Durchlaufmaschine
ITPN20030040A1 (it) * 2003-06-20 2004-12-21 Bortolini Engineering Snc Macchina bordatrice-refilatrice di pannelli.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2689903A1 (de) 2012-07-23 2014-01-29 SCM Group Tecmatic Maquinas e Equipamentos Ltda Abrundungs- und Beschneidungsgruppe für Kanten von Platten
EP2821171A1 (de) * 2013-07-04 2015-01-07 Homag Holzbearbeitungssysteme GmbH Bearbeitungsvorrichtung mit einer Beförderungseinrichtung und einer Bearbeitungseinrichtung

Also Published As

Publication number Publication date
ITMI20070392A1 (it) 2008-09-01
EP1964654A3 (de) 2008-12-10

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