EP3248745B1 - Machine de plaquage de chants munie d'un dispositif de fraisage et procédé de fonctionnement d'une telle machine de plaquage de chants - Google Patents

Machine de plaquage de chants munie d'un dispositif de fraisage et procédé de fonctionnement d'une telle machine de plaquage de chants Download PDF

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Publication number
EP3248745B1
EP3248745B1 EP17172843.9A EP17172843A EP3248745B1 EP 3248745 B1 EP3248745 B1 EP 3248745B1 EP 17172843 A EP17172843 A EP 17172843A EP 3248745 B1 EP3248745 B1 EP 3248745B1
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EP
European Patent Office
Prior art keywords
edge
milling
panel
cladding
section
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EP17172843.9A
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German (de)
English (en)
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EP3248745A1 (fr
Inventor
Andrea VOLPATO
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Fravol Export Srl
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Fravol Export Srl
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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
    • B27D5/006—Trimming, chamfering or bevelling edgings, e.g. lists

Definitions

  • the present invention relates to an edge-banding machine, according to the preamble of claim 1, provided with a milling device and an operation method of said edge-banding machine.
  • Such an edge-banding machine and process obtained by said machine are known from the document DE 3732810 C1 .
  • the edge-banding machine of the invention is intended to be used to carry out the application of cladding edges on panels made of different materials such as wood, chipboard, plywood, MDF, etc.
  • the subject machine is adapted to perform the trimming of the cladding edges by linearly cutting the ends of such edges, and to perform the rounding of the cladding edges by carrying out an angular joining and rounding process at the ends of the cladding edges to seamlessly join the orthogonal sides of the panels.
  • the machine the invention is advantageously adapted to apply a cladding edge to one side of the panel at each passage of the panel through the edge-banding machine.
  • edge-banding machines have been introduced on the market which are adapted to apply the cladding edges on the sides of the panels and are provided with operating units adapted to perform the necessary finishing operations of the same edges.
  • edge-banding machines of the unilateral type which are adapted to apply an edge to one side of the panel at each passage of the panel through the edge-banding machine.
  • edge-banding machines of the known type comprise a support frame provided with a sliding guide extending between an inlet port and an outlet port, and driving means (obtained for example with a sliding belt) adapted to move the panels to advance along the sliding guide from the inlet port to the outlet port.
  • the edge-banding machine further comprises a storage station adapted to accommodate an edging tape to be applied to the panels and which will form the cladding edge. More specifically, such storage station comprises a rotatable support which carries the wrapped edging tape and is operable to rotate to unwrap the edging tape along the sliding lane to apply the edging tape to the side of the panel.
  • the edge-banding machine comprises a grinding unit placed along the sliding lane downstream of the inlet port and provided with one or more cutters adapted to act on the side of the panel to eliminate the irregularities thereof.
  • the edge-banding machine also comprises a gluing unit located downstream of the grinding group and adapted to deposit a layer of glue (e.g. heat-melting type) on the side of the panel and compress, by means of two or more rollers, the edging tape on the layer of glue for gluing the tape to the side of the panel.
  • glue e.g. heat-melting type
  • the grinding unit is provided with a cutting tool adapted to cut the edging tape at the rear end of the panel.
  • the edging tape glued to the panel using the above gluing unit has a greater length than the panel and a greater width than the thickness of the same panel, so that the edging tape protrudes with respect to the ends and the longitudinal sides of the side of the panel.
  • the edge-banding machine further comprises an end milling unit arranged downstream of the gluing unit and provided with a circular saw adapted to cut the portions of the edging tape that protrude beyond the ends of the side of the panel, linearly cutting the edging tape ends substantially flush with the ends of the side of the panel.
  • the edge-banding machine also comprises a trimming unit arranged downstream of the end milling unit and adapted to cut the portions of the edging tape that protrude beyond the longitudinal sides of the side of the panel.
  • the edge-banding machine also comprises a rounding unit arranged downstream of the trimming unit and provided with a cutter adapted to round the ends of the edging tape for seamlessly connecting the outer surface of the edging tape with the adjacent orthogonal side of the panel.
  • the cutter of the rounding unit is peripherally provided with multiple cutting teeth, each of which has an arched profile with a radius of curvature equal to the thickness of the edging tape for properly joining the two sides at 90 degrees of the panel.
  • an operator in each passage, an operator must introduce the panel into the edge-banding machine at the inlet port of the latter, in such a way that the driving means of the edge-banding machine move the panel to the operating units arranged along the sliding lane up to an outlet port.
  • the cladding edges are applied on the two longitudinal sides of the panel mutually parallel to and opposite.
  • the end milling unit is actuated to cut in a rectilinear manner the ends of the edging tape flush with the ends of the corresponding side of the panel, while the rounding unit is disabled.
  • the cladding edges are applied on the two end faces of the panel orthogonal to said longitudinal sides of the same panel.
  • the end milling unit is disabled while the rounding unit is actuated to round the ends of the edging tape applied to the end side of the panel, in such a way as to seamlessly join the outer surface of such an edging tape with the outer surface of the edging tape applied to the adjacent longitudinal side of the panel.
  • a first drawback of the above edge-banding machines of known type is due to the fact of necessarily comprising two distinct operating units (the end milling unit and the rounding unit) for working the ends of the edges during the first two passages and during the last two passages of the panel in the edge-banding machine, with consequent high cost and considerable dimensions of the same edge-banding machines.
  • a further drawback of the above edge-banding machines of known type is due to the fact that the circular saw of the end milling unit has a relatively large diameter (of the order of tens of centimeters) and, therefore, when it is driven in rotation (at speeds of the order of ten thousand revolutions per minute), the saw edge moves at a very high tangential speed, thereby generating a strong and high-pitched noise.
  • a further drawback of the above edge-banding machines of known type is due to the fact that the circular saw of the end milling unit, when it cuts the edging tape, produces numerous scraps that are projected into the air, with consequent danger for the operators, i.e. requiring the installation of protective panels with a consequent increase of costs of the edge-banding machine.
  • the problem underlying the present invention is therefore that of overcoming the drawbacks associated with known solutions by providing a milling device for an edge-banding machine which is able to perform both end milling operations and rounding operations of the cladding edges applied to the panel.
  • Another object of the present invention is to provide a milling device for an edge-banding machine which allows implementing edge-banding machines having a reduced cost.
  • Another object of the present invention is to provide a milling device for an edge-banding machine which allows implementing edge-banding machines having contained overall dimensions.
  • Another object of the present invention is to provide a milling device for an edge-banding machine which allows implementing relatively noise-free edge-banding machines.
  • Another object of the present invention is to provide a milling device for an edge-banding machine which is constructively simple and cost-effective to implement.
  • Another object of the present invention is to provide a milling device for an edge-banding machine which is operatively safe and reliable.
  • reference numeral 1 indicates as a whole a milling device object of the present invention.
  • the milling device 1 of the invention is intended to be advantageously mounted on an edge-banding machine 100 adapted to carry out the application of cladding edges on panels made, for example, of wood, chipboard, plywood, MDF (Medium-density fiberboard), etc.
  • each panel P is substantially shaped as a parallelepiped and has two major faces, generally coated, parallel and opposite each other and peripherally connected together by four sides L in twos parallel which define the thickness of panel P itself.
  • Each side L of panel P extends longitudinally between a front end edge and a rear end edge and is delimited in width by two longitudinal sides preferably parallel to each other.
  • the edge-banding machine 100 is adapted to apply a cladding edge B (e.g. PVC, ABS, melamine, wood, Formica, aluminum, etc.) on one or more sides L of panel P.
  • a cladding edge B e.g. PVC, ABS, melamine, wood, Formica, aluminum, etc.
  • the edge-banding machine 100 is in particular of the unilateral type, being adapted to apply a cladding edge B to one side only of panel P at every passage of panel P through the edge-banding machine 100 itself.
  • the edge-banding machine 100 comprises a support frame 101 intended to be rested on the ground and provided with a sliding lane 102 extending between an inlet port 103 and an outlet port 104, preferably according to a sliding direction S substantially rectilinear and in particular horizontal.
  • the edge-banding machine 100 further comprises feeding means 105 adapted to move panels P to advance along the sliding lane 102 from the inlet port 103 to the outlet port 104.
  • the feeding means 105 comprise a track conveyor belt of conventional type per se, adapted to advance panels P individually and horizontally, in succession to each other from the inlet port 103 to the outlet port 104.
  • the edge-banding machine also comprises a storage station 106 adapted to accommodate an edging tape to be applied to sides L of panels P and that will form the cladding edge B of panels P themselves. More specifically, such storage station 106 comprises a rotatable support 107 which carries the wrapped edging tape (not shown) and is operable to rotate to unwrap the edging tape along the sliding lane 102 to apply the edging tape to side L of panel P.
  • the edge-banding machine 100 advantageously comprises a grinding unit 108, of known type per se, placed along the sliding lane 102 downstream of the inlet port 103 and provided with one or more cutters (not shown) adapted to act on side L of panel P to eliminate the irregularities thereof.
  • the edge-banding machine 100 preferably comprises a gluing unit 109 placed downstream of the grinding unit 108 and comprising, in a conventional manner per se, a distribution device adapted to take an adhesive (such as heat-melting) from a containment tank and deposit a layer of such an adhesive on side L of panel P.
  • the gluing unit 109 is also provided with two or more rollers adapted to compress the edging tape to the layer of glue to glue the edging tape to side L of panel P.
  • the gluing unit 109 is also provided with a cutting tool adapted to cut the edging tape at the rear edge of side L of panel P, so that the portion of edging tape glued to side L of panel P forms a cladding edge B of panel P itself.
  • the cladding edge B glued to the corresponding side L of panel P by the gluing unit 109 has a greater length than side L of panel P and greater width than the thickness of panel P itself, so that the cladding edge B protrudes with respect to the end edges and the sides of side L of panel P.
  • the edge-banding machine 100 also comprises a trimming unit 110, of known type per se, arranged downstream of the gluing unit 109 and adapted to cut the portions of the cladding edge B protruding beyond the sides of side L of panel P substantially flush with the main sides of panel P itself.
  • a trimming unit 110 of known type per se, arranged downstream of the gluing unit 109 and adapted to cut the portions of the cladding edge B protruding beyond the sides of side L of panel P substantially flush with the main sides of panel P itself.
  • the edge-banding machine 100 may advantageously be provided with further operating units of known type per se and not described in the present description.
  • the edge-banding machine 00 comprises a control unit 100, in particular provided with a PLC, adapted to control in an automated or semi-automated manner the operating units 108, 109, 110 of the edge-banding machine 100 itself.
  • the milling device 1 object of the present invention is intended to be mounted on the support frame 101 of the edge-banding machine 100 along the sliding lane 102, preferably downstream of the gluing unit 109 and in particular downstream also of the trimming unit 110.
  • Such a milling device 1 can be operated for milling the portions of the cladding edge B that protrude beyond the end edges of the corresponding side L of panel P, defining two ends E of the cladding edge B substantially aligned with the edges of the corresponding side L of panel P.
  • the milling device 1 can be operated for selectively carrying out an end milling operation or a rounding operation.
  • the milling device 1 is adapted to cut in a substantially straight manner ends E of the cladding edge B substantially flush with the end edges of the corresponding side L of panel P, as shown in particular in the embodiment example in figure 12 .
  • the milling device 1 is adapted to round edges E of the cladding edge B of panel P, in such a way as to seamlessly join the outer surface of such a cladding edge B with the outer surface of the adjacent side L of panel P or, i.e. with the outer surface of the cladding edge B applied to such adjacent side L, as described in particular in the embodiment example in figure 13 .
  • the milling device 1 comprises a support structure 2 intended to be mounted on the edge-banding machine 100, and in particular intended to be fixed to the support frame 101 of the edge-banding machine 100 itself.
  • the milling device 1 further comprises a milling head 3 mounted on the support frame 2 and provided with an operational zone 4 in which the cladding edge B of panel P advancing along the sliding lane 102 is susceptible to pass.
  • the milling device 1 also comprises a milling tool 5 mounted on the milling head 3 and comprising a rotation body 6 provided with a rotation axis X, preferably orthogonal to the sliding direction S of panels P and in particular horizontal.
  • the rotation body 6 of the milling tool 5 extends along the rotation axis X between a front side 7 thereof, intended to face towards the cladding edge B to be worked, and a rear side 8 thereof facing the direction opposite to the front side 7.
  • the front side 7 and the rear side 8 of the rotation body 6 are substantially orthogonal to the rotation axis X of the rotation body 6 itself.
  • the rotation body 6 is peripherally provided with a cutting profile 9 extending around the rotation axis X between the front side 7 and the rear side 8 and intended to act at the operational zone 4 for milling the cladding edge B of panel P.
  • the milling device also comprises driving means 10 mechanically connected to the milling tool 5 and 10 drive adapted to bring in rotation the rotation body 6 of the latter about the rotation axis X to allow the cutting profile 9 of the rotation body 6 to mill the cladding edge B of panel P.
  • the driving means 10 comprise a first motor 11, preferably electric, mounted on the milling head 3 and provided with an output shaft to which the rotation body 6 of the milling tool 5 is connected to rotate the rotation body 6 about the rotation axis X, at a speed of for example 12000 rpm.
  • the cutting profile 9 of the rotation body 6 of the milling tool 5 has a section with a rounding section 12 of curved shape with concavity facing towards the front side 7 of the rotation body 6, and an end milling section 13, substantially straight and extending between the rounding section 12 and the front side 7.
  • the above section of the cutting profile is defined on a section plane radial and parallel to the rotation axis X and in particular containing the rotation axis X itself.
  • the milling device 1 comprises handling means 14 mechanically connected to the milling tool 5 and adapted to move such a milling tool 5 along the rotation axis X between a retracted position (shown in the example in figure 10 ) and an advanced position (shown in the example in figure 11 ).
  • the end milling section 13 of the cutting profile 9 of the rotation body 6 is arranged in the operational zone 4 to act on the cladding edge B of panel P to linearly cut end E of such a cladding edge B, so as to carry out the above end milling operation.
  • the rounding section 12 when the milling tool 5 is in the retracted position, the rounding section 12 is arranged outside the operational zone 4 not to go in contact with the cladding edge B of panel P.
  • the rounding section 12 of the cutting profile 9 of the rotation body 6 when the milling tool 5 is in the advanced position, the rounding section 12 of the cutting profile 9 of the rotation body 6 is arranged in the operational zone 4 to act on the cladding edge B of panel P to round end E of the cladding edge B itself, so as to carry out the above rounding operation.
  • the subject milling device 1 is able to perform both end milling operations and rounding operations, avoiding the use of two separate end milling and rounding units in the edge-banding machine 100, with consequent reduction in costs and dimensions of the edge-banding machine 100 itself.
  • the rotation body 6 of the milling tool 5 is peripherally provided with a plurality of teeth 15 arranged around the rotation axis X and on which said cutting profile 9 is formed.
  • each tooth 15 is provided with a corresponding section with the rounding section 12 and the end milling section 13.
  • the rotation body 6 is provided with a central hub 16 connected to the output shaft of the first motor 11 and from which teeth 15 extent radially.
  • the rotation body 6 of the milling tool 5 is made of a rigid material, preferably metal, such as steel (such as HSS), sintered metal, etc.
  • the end milling section 13 of the cutting profile 9 of the rotation body 6 of the milling tool 5 develops between a first end 17, suitably arranged at the front side 7 of the rotation body 6, and a second end 18 connected to the rounding section 12.
  • the section of the cutting profile 9 is provided with a joining section 32 fitting connecting the rounding section 12 and the second end 18 of the end milling section 13.
  • said joining section 32 is inclined with respect to the rotation axis X of the rotation body 6, extending in approach to the rotation axis X from the rounding section 12 towards the end milling section 13.
  • the joining section 32 is inclined with respect to the rotation axis X of the rotation body 6 by a joining angle ⁇ of between 6° and 10°, and preferably of about 8°.
  • the joining section 32 is substantially straight and in particular has a length of about 1 mm and 3 mm and preferably of about 1 mm.
  • the second end 18 of the end milling section 13 of the section of the cutting profile 9 is seamlessly joined to the rounding section 12.
  • the end milling section 13 of the cutting profile 9 is inclined with respect to the rotation axis X of the rotation body 6 by an end milling angle ⁇ of between 0° and 15°, and preferably greater than 0°.
  • the end milling section 13 develops from its first end 17 to its second end 18 away from the rotation axis X with inclination equal to said end milling angle ⁇ .
  • the above end milling angle ⁇ (in particular greater than 0°) prevents the end milling section 13 of the cutting profile 9 of the milling tool 5 from going into contact with the main side of panel P during the milling operations, preventing damage to such a main side.
  • the end milling angle ⁇ is of between 0° and 3° and is preferably greater than 0° and, in particular, equal to about 1°.
  • the end milling angle ⁇ is of between 6° and 10° and is preferably equal to about 8°.
  • the end milling section 13 of the cutting profile 9 has a length of at least about 5 millimeters and in particular of between about 5 mm and 6 mm.
  • the support structure 2 of the milling device 1 comprises a translation guide 19 orthogonal to the rotation axis X of the milling tool 5, and in particular parallel to the sliding direction S of the sliding lane 102 along which they panels P to be edged advance.
  • the milling device 1 comprises a movable carriage 20 slidably mounted on the translation guide 19 and carrying said milling head 3 mounted.
  • the milling device 1 also comprises a second motor (not shown) mounted on the support structure 2 and mechanically connected to the movable carriage 20 to actuate the latter to slide along the translation guide 19.
  • the second motor is connected to the movable carriage 20 through flexible transmission means, which advantageously consist of a chain wrapped as a ring on a driving wheel, a tension wheel and two return wheels.
  • the second motor advantageously consists of an asynchronous motor and is controlled by an inverter connected to the control unit of the edge-banding machine 100 having an electronic positioning system which allows controlling the rotation of the rotor of the second motor, and thus ultimately that allows controlling the position of the movable carriage 20 (and thus of the milling head 3) along the translation guide 19.
  • the handling of panels P by the feeding means 105 of the edge-banding machine 100 is assisted by an encoder, also connected to the control unit and able to produce a pulse signal capable of controlling the inverter of the second motor so that the movable carriage 20 moves perfectly synchronized with panels P.
  • the second motor controls the translation of the milling head 3 at the same speed as panels P to follow the latter in their stroke along the sliding lane 102 of the edge-banding machine 100.
  • the milling head 3 is rotatably mounted on the movable carriage 20, via a tilting shaft 21, around a transversal axis Y orthogonal to the translation guide 19 and parallel to the rotation axis X of the milling tool 5.
  • the milling device 1 comprises a third motor 22 integral with the movable carriage 20, mechanically connected to the milling head 3 for controlling the latter to rotate around the tilting shaft 21, and electrically coupled with the second motor to synchronize according to predetermined operational steps the rotation of the milling head 3 with its translation along the translation guide 19 above the movable carriage 20.
  • a third motor 22 integral with the movable carriage 20, mechanically connected to the milling head 3 for controlling the latter to rotate around the tilting shaft 21, and electrically coupled with the second motor to synchronize according to predetermined operational steps the rotation of the milling head 3 with its translation along the translation guide 19 above the movable carriage 20.
  • the third motor 22 consists of a reduction unit with worm screw controlled by an inverter connected to the control unit of the edge-banding machine 100 and provided with a pulse positioner for a correct angular positioning of the milling head 3.
  • the milling head 3 comprises a front coupler 23 and a vertical coupler 24, the latter consisting in particular of an idle disc free to rotate with axis parallel to the rotation axis X of the rotation body 6 of the milling tool 5.
  • the milling head 3 comprises actuating means 25, 26 adapted to keep the two couplers 23, 24 constantly resting onto panel P and thus ensure the correct working position of the milling tool 5.
  • the milling device 1 is provided with a support 27 fixed to the tilting shaft 21 and provided with a coupling guide 28, orthogonal to the tilting shaft 21 and to the translation guide 19, and on which coupling guide 28 the milling head 3 is slidably mounted.
  • the actuating means 25, 26 advantageously comprise a first pneumatic actuator 25 which is mounted on support 27 and is actuated by the control unit to move the milling head 3 along the coupling guide 28 up to push the vertical coupler 24 in abutment on the main side of panel P.
  • the actuating means 25, 26 advantageously comprise a second pneumatic actuator 26 to move the front coupler 23 transversely with respect to the sliding direction S of panel P up to bringing such front coupler 23 in abutment against the cladding edge B of panel P itself.
  • the milling head 3 comprises a support body 29 mechanically connected to the support structure 2 of the milling device 1 and provided with a positioning guide substantially straight and parallel to the rotation axis X of the rotation body 6 of the milling tool 5.
  • the support body 29 of the milling head 3 is slidably mounted on the coupling guide 28 of support 27 of the milling device 1.
  • the milling head 3 comprises a displacement body 30 slidably constrained to the positioning guide of the support body 29 and carrying the milling tool 5 rotatably mounted around the rotation axis X.
  • the above displacement body 30 carries mounted the first motor 11 of the driving means 10 adapted to bring in rotation the rotation body 6 of the milling tool 5.
  • the handling means 14 of the milling device 1 are connected to the displacement body 30 and are designed to displace the latter along the positioning guide of the support body 29 for moving the milling tool 5 between the retracted position and the advanced position.
  • the handling means 14 comprise a linear actuator 31, in particular pneumatic, mounted on the support body 29 of the milling head 3 and connected to the displacement body 30 to move the latter along the positioning guide.
  • a linear actuator 31 in particular pneumatic, mounted on the support body 29 of the milling head 3 and connected to the displacement body 30 to move the latter along the positioning guide.
  • the handling means 14 may comprise an electric motor or an electromagnet.
  • the handling means 14 are arranged to move along the rotation axis X the support structure 2 of the trimmer head milling device 1 or support 27 of the milling head 3 in order in both cases to move the milling tool 5 between the retracted position and the advanced position.
  • An object of the present invention is also an operation method of a milling device 1 of the type described above.
  • the method object of the present invention provides for actuating the rotation body 6 of the milling tool 5 to rotate about the rotation axis X, in particular by the driving means 10 of the milling device 1.
  • the method also provides for positioning the milling tool 5, selectively, in the retracted position or in the advanced position, in particular by the handling means 14 of the milling device 1.
  • the rotation body 6 acts on the cladding edge B of panel P with the end milling section 13 of the cutting profile 9 for linearly cutting one end E of the cladding edge B itself, in order to carry out an end milling operation of the cladding edge B.
  • the rounding section 12 of the cutting profile 9 of the rotation body 6 is arranged outside the operational zone 4 of the milling head 3 not to go in contact with the cladding edge B of panel P.
  • the rotation body 6 acts on the cladding edge B of panel P with the rounding section 12 of the cutting profile 9 for rounding end E of the cladding edge B itself, thus carrying out a rounding operation of the cladding edge B.
  • the above method is carried out in an edge-banding operation of panel P preferably obtained by the edge-banding machine 100.
  • This method allows carrying out an end trimming step of the cladding edge B of panel P or a rounding step of the cladding edge B, depending on the position (retracted or advanced, respectively) controlled to the milling tool 5.
  • the edge-banding process provides for passing panel P through the edge-banding machine 100 from the inlet port 103 to the outlet port 104 of the latter along the sliding lane 102.
  • the operating units 108, 109, 110 of the edge-banding machine 100 apply a cladding edge B to one of sides L of panel P.
  • an operator in each passage, an operator must introduce panel P into the edge-banding machine 100 at the inlet port 103 of the latter, in such a way that the feeding means 105 of the edge-banding machine 100 advance panel P along the sliding lane 102 of the same edge-banding machine 100.
  • the edge-banding process comprises a step of grinding side L of panel P to be edge-banded, by means of the above grinding unit 108 of the edge-banding machine, in order in particular to eliminate irregularities on side L.
  • a gluing step is then provided for a portion of the edging tape on side L of panel P, in particular obtained through the above gluing unit 109, in such a way as to attach a cladding edge B to side L of panel P.
  • the cladding edge B applied in this gluing step protrudes beyond the end edges and beyond the sides of side L of panel P.
  • the edge-banding process comprises, in particular after the gluing step, a trimming step, obtained in particular through the trimming unit 110 of the edge-banding machine 100, to remove the portions of the cladding edge B protruding from the sides of side L of panel P.
  • the edge-banding process includes a trimming step for linearly trimming the cladding edge B at the end edges of panel P, and/or a rounding step of the cladding edge B to perform an angular joining and rounding processing and at the end edges of panel P.
  • Such end trimming and rounding steps are both carried out by the milling device 1 by the operation method object of the present invention.
  • a photocell detects the arrival of panel P at the milling device 1, notifying it to the control unit of the edge-banding machine 100, which actuates the milling device 1.
  • control unit controls the driving means 10 (and in particular the first motor 11) to bring in rotation the rotation body 6 of the milling too01 5 of the milling device 1.
  • control unit controls the second motor of the milling device 1 to actuate the movable carriage 20 (with the milling head 3 thereon) to slide along the translation guide 19 to follow panel P advancing along the sliding lane 102.
  • control unit controls the third motor 22 of the milling device 1 to bring in rotation the milling head 3 at the front end edge of side L of panel P so that the milling tool 5 cuts the cladding edge B at such a front edge.
  • the control unit then controls the milling device 1 to work the cladding edge B at the rear end edge of side L of panel P, through movements of translation and rotation of the milling head 3 similar to those described above for the processing of the front end edge of side L of panel P.
  • the activation of the (rotation and translation) movements of the milling head 3 to perform processing at the rear end edge is achieved due to a sensor connected to the control unit that detects the length of panel P and therefore allows knowing when the latter has gone past the milling device 1.
  • the milling device 1 is set, in particular through the control unit controlled by the operator, to arrange the milling tool 5 in said retracted position in order to cut the cladding edge B by the (straight) end milling section 13 of the cutting profile 9 of the rotation body 6 of the milling device 5.
  • the milling device 1 is set, in particular through the control unit controlled by the operator, to arrange the milling tool 5 in the advanced position in order to cut the cladding edge B by the (arched) rounding section 12 of the cutting profile 9 of the rotation body 6 of the milling device 5.
  • the operation method of the milling device 1 can provide for setting or set the latter to carry out a rounding operation of the cladding edge B at the front edge of side L of panel P and an end trimming operation of the cladding edge B at the rear edge of side L of panel P, or vice versa.

Claims (11)

  1. Machine de plaquage de chants (100), comprenant :
    - un châssis de support (101) pourvu d'une bande coulissante (102) s'étendant entre un orifice d'entrée (103) et un orifice de sortie (104) suivant une direction de coulissement (S) sensiblement rectiligne ;
    - des moyens d'avancement (105) conçus pour déplacer les panneaux (P) afin de les faire avancer le long de ladite bande coulissante (102) de l'orifice d'entrée (102) à l'orifice de sortie (104) ; chacun desdits panneaux (P) étant pourvu de deux faces principales parallèles et opposées l'une à l'autre et reliées ensemble le long du périmètre au niveau de quatre côtés (L), chacun desdits côtés (L) s'étendant de façon longitudinale entre un bord d'extrémité avant et un bord d'extrémité arrière et étant délimité en largeur par deux côtés parallèles longitudinaux ;
    - une unité de collage (109) montée sur ledit châssis de support (101) le long de ladite bande coulissante (102) et conçue pour coller une bande de chant sur un desdits côtés (L) dudit panneau (P) pour former un bord de revêtement (B) ;
    - une unité de coupe (110) disposée en aval de ladite unité de collage (109) et conçue pour couper les parties dudit bord de revêtement (B) faisant saillie au-delà des côtés longitudinaux du côté (L) dudit panneau (P) ;
    - un dispositif de fraisage (1) monté sur le châssis de support (101) de ladite machine de plaquage de chants (100) le long de ladite bande coulissante (102) en aval de ladite unité de collage (109), et conçu pour fraiser les parties dudit bord de revêtement (B) qui font saillie au-delà des bords d'extrémité du côté correspondant (L) dudit panneau (P), définissant ainsi deux extrémités (E) dudit bord de revêtement (B) alignées avec les bords du côté correspondant (L) dudit panneau (P) ;
    - une unité de commande (100) apte à contrôler ladite unité de collage (109) et ladite unité de coupe (110) de manière automatique ou semi-automatique ;
    dans laquelle ledit dispositif de fraisage (1) comprend :
    - une structure de support (2) fixée au châssis de support (101) de ladite machine de plaquage de chants (100) ;
    - une tête de fraisage (3) montée sur ladite structure de support (2) et pourvue d'une zone opérationnelle (4) dans laquelle un bord de revêtement (B) d'un panneau (P) est susceptible de passer ;
    - un outil de fraisage (5) monté sur ladite tête de fraisage (3) et comprenant un corps de pivotement (6) qui est muni d'un axe de rotation (X) orthogonal à ladite direction de coulissement (S), il s'étend par rapport audit axe de rotation (X) entre un côté avant (7) et un côté arrière (8) et il est pourvu d'un profil de coupe (9) périphérique se développant autour dudit axe de rotation (X), s'étendant entre ledit côté avant (7) et ledit côté arrière (8) et destiné à agir au niveau de ladite zone opérationnelle (4) de la tête de fraisage pour fraiser le bord de revêtement (B) dudit panneau (P) ;
    - des moyens d'actionnement (10) reliés de façon mécanique audit outil de fraisage (5) et aptes à entraîner en rotation ledit corps de pivotement (6) autour dudit axe de rotation (X) ; dans laquelle lesdits moyens d'actionnement (10) comprennent un premier moteur (11) monté sur ladite tête de fraisage (3) et pourvu d'un arbre de sortie auquel le corps de pivotement (6) dudit outil de fraisage (5) est relié pour faire tourner ledit corps de pivotement (6) autour dudit axe de rotation (X) ;
    dans laquelle ladite tête de fraisage (3) comprend :
    - un corps de support (29) relié de façon mécanique à ladite structure de support (2) et pourvu d'un guide de positionnement sensiblement droit et parallèle audit axe de rotation (X) ;
    - un corps de déplacement (30) fixé de manière coulissante audit guide de positionnement et portant ledit outil de fraisage (5) monté de manière rotative autour dudit axe de rotation (X) ;
    dans laquelle lesdits moyens de manipulation (14) comprennent au moins un actionneur linéaire (31), sont reliés audit corps de déplacement (30) et sont conçus pour déplacer ledit corps de déplacement (30) le long dudit guide de positionnement pour mettre en mouvement ledit outil de fraisage (5) entre ladite position rétractée et ladite position avancée ;
    ladite machine de plaquage de chants (100) étant caractérisée en ce que le profil de coupe (9) dudit corps de pivotement (6) est pourvu d'une section, définie sur un plan de coupe radial et parallèle audit axe de rotation (X), ayant une section d'arrondissage (12), en forme d'arc avec la concavité faisant face audit côté avant (7), et une section de fraisage d'extrémité (13) droite s'étendant entre ladite section d'arrondissage (12) et ledit côté avant (7) et inclinée par rapport audit axe de rotation (X) d'un angle de fraisage d'extrémité (α) compris entre 0° et 15° ; dans laquelle la section de fraisage d'extrémité (13) du profil de coupe (9) du corps de pivotement (6) dudit outil de fraisage (5) se développe entre une première extrémité (17) disposée au niveau du côté avant (7) dudit corps de pivotement (6), et une seconde extrémité (18) reliée à ladite section d'arrondissage (12) ;
    ledit dispositif de fraisage (1) comprenant des moyens de manipulation (14) reliés de façon mécanique audit outil de fraisage (5) et, au moyen de ladite unité de commande (100), disposés pour mettre en mouvement ledit outil de fraisage (5) le long dudit axe de rotation (X) entre :
    - une position rétractée, dans laquelle la section de fraisage d'extrémité (13) du profil de coupe (9) dudit corps de pivotement (6) est disposée dans ladite zone opérationnelle (4) pour agir sur le bord de revêtement (B) dudit panneau (P) afin de couper de façon linéaire une extrémité (E) dudit bord de revêtement (B),
    - et une position avancée, dans laquelle la section d'arrondissage (12) du profil de coupe (9) dudit corps de pivotement (6) est disposée dans ladite zone opérationnelle (4) pour agir sur le bord de revêtement (B) dudit panneau (P) afin d'arrondir l'extrémité (E) dudit bord de revêtement (B) ;
    et en ce que la structure de support (2) dudit dispositif de fraisage (1) comprend un guide de translation (19) orthogonal à l'axe de rotation (X) dudit outil de fraisage (5) et parallèle à la direction de coulissement (S) de ladite bande coulissante (102) ; dans laquelle ledit dispositif de fraisage (1) comprend :
    - un chariot mobile (20) monté de façon coulissante sur ledit guide de translation (19) et portant ladite tête de fraisage (3) montée ;
    - un second moteur monté sur ladite structure de support (2) et relié de façon mécanique audit chariot mobile (20) pour actionner ledit chariot mobile (20) afin qu'il glisse le long dudit guide de translation (19).
  2. Machine de plaquage de chants (100) selon la revendication 1, caractérisée en ce que ledit angle de fraisage d'extrémité (α) est compris entre 0° et 3°.
  3. Machine de plaquage de chants (100) selon la revendication 1, caractérisée en ce que ledit angle de fraisage d'extrémité (α) est compris entre 6° et 10°.
  4. Machine de plaquage de chants (100) selon l'une quelconque des revendications précédentes, caractérisée en ce que la section dudit profil de coupe (9) est pourvue d'une section de raccordement (32) placée en connexion entre ladite section d'arrondissage (12) et ladite section de fraisage d'extrémité (13) et inclinée par rapport audit axe de rotation (X) s'étendant vers ledit axe de rotation (X) de ladite section d'arrondissage (12) à ladite section de fraisage d'extrémité (13).
  5. Machine de plaquage de chants (100) selon la revendication 4, caractérisée en ce que ladite section de raccordement (32) est inclinée par rapport audit axe de rotation (X) d'un angle de raccordement (α) compris entre 6° et 10°.
  6. Machine de plaquage de chants (100) selon la revendication 4 or 5, caractérisée en ce que ladite section de raccordement (32) est droite.
  7. Machine de plaquage de chants (100) selon l'une quelconque des revendications précédentes, caractérisée en ce que la section de fraisage d'extrémité (13) dudit profil de coupe (9) est au moins 5 millimètres de long.
  8. Machine de plaquage de chants (100) selon l'une quelconque des revendications précédentes, caractérisée en ce que le corps de pivotement (6) dudit outil de fraisage (5) est pourvu d'une pluralité de dents (15) de façon périphérique, disposées autour dudit axe de rotation (X) et sur lesquelles dents (15) ledit profil de coupe est obtenu (9).
  9. Machine de plaquage de chants (100) selon l'une quelconque des revendications précédentes, caractérisée en ce que :
    - ladite tête de fraisage (3) est montée de manière rotative sur ledit chariot mobile (20), à travers un axe basculant (21), autour d'un axe transversal (Y) orthogonal audit guide de translation (19) et parallèle à l'axe de rotation (X) dudit outil de fraisage (5) ;
    - ledit dispositif de fraisage (1) comprend un troisième moteur (22) monté sur ledit chariot mobile (20), relié de façon mécanique à ladite tête de fraisage (3) pour contrôler ladite tête de fraisage (3) afin qu'elle pivote autour dudit axe transversal (Y), et couplé électriquement audit second moteur de manière à synchroniser la rotation de ladite tête de fraisage (3) autour dudit axe transversal (Y) avec la translation de ladite tête de fraisage (3) le long dudit guide de translation (19) au-dessus dudit chariot mobile (20).
  10. Procédé de plaquage de chants qui utilise la machine de plaquage de chants (100) selon l'une quelconque des revendications précédentes, dans lequel ledit procédé de plaquage de chants comprend l'étape consistant à faire passer ledit panneau (P) à travers ladite machine de plaquage de chants (100) dudit orifice d'entrée (103) audit orifice de sortie (104) le long de ladite bande coulissante (102), dans laquelle, lors de chaque passage du panneau (P), lesdites unités fonctionnelles (109, 110) de la machine de plaquage de chants (100) appliquent un bord de revêtement (B) sur un des côtés (L) dudit panneau (P) ;
    dans lequel, lors de chaque passage du panneau (P), ledit procédé de plaquage de chants comprend :
    - une étape de collage pour une partie d'une bande de chant sur le côté (L) dudit panneau (P), obtenue par l'intermédiaire de ladite unité de collage (109), de manière à attacher un bord de revêtement (B) au côté (L) dudit panneau (P), dans laquelle le bord de revêtement (B) appliqué dans ladite étape de collage fait saillie au-delà des bords d'extrémité et au-delà des côtés longitudinaux du côté (L) dudit panneau (P) ;
    - après ladite étape de collage, une étape de coupe, obtenue par l'intermédiaire de ladite unité de coupe (110), pour enlever les parties dudit bord de revêtement (B) faisant saillie desdits côtés longitudinaux du côté (L) dudit panneau (P) ;
    - une étape de coupe pour couper de façon linéaire le bord de revêtement (B) au niveau des bords d'extrémité dudit panneau (P), et/ou une étape d'arrondissage du bord de revêtement (B) pour réaliser un rattachement angulaire et un traitement d'arrondissage au niveau des bords d'extrémité du panneau (P) ;
    dans lequel lesdites étapes de coupe et d'arrondissage d'extrémité sont toutes les deux effectuées par ledit dispositif de fraisage (1) à travers un procédé opérationnel dudit dispositif de fraisage (1), ledit procédé prévoyant ce qui suit :
    - ladite unité de commande contrôle le second moteur dudit dispositif de fraisage (1) pour actionner ledit chariot mobile (20) afin qu'il glisse le long dudit guide de translation (19) pour suivre le panneau (P) qui avance le long de ladite bande coulissante (102) ;
    - le fonctionnement du corps de pivotement (6) dudit outil de fraisage (5) afin de pivoter autour dudit axe de rotation (X) ; dans lequel ladite unité de commande contrôle le premier moteur (11) desdits moyens d'actionnement (10) pour entraîner en rotation le corps de pivotement (6) dudit outil de fraisage (5) ;
    - le positionnement sélectif dudit outil de fraisage (5) :
    - dans une position rétractée, dans laquelle ledit corps de pivotement (6) dudit outil de fraisage (5) agit sur ledit bord de revêtement (B) avec la section de fraisage d'extrémité (13) dudit profil de coupe (9), pour couper de façon linéaire une extrémité (E) dudit bord de revêtement (B),
    - dans une position avancée, dans laquelle ledit corps de pivotement (6) dudit outil de fraisage (5) agit sur ledit bord de revêtement (B) avec la section d'arrondissage (12) dudit profil de coupe (9), pour arrondir l'extrémité (E) dudit bord de revêtement (B) ;
    dans lequel :
    - si ledit procédé de plaquage de chants comprend la réalisation de ladite étape de fraisage d'extrémité, ledit dispositif de fraisage (1) est réglé, par l'intermédiaire de ladite unité de commande (100), afin de disposer l'outil de fraisage (5) dans ladite position rétractée afin de couper le bord de revêtement (B) par la section de fraisage d'extrémité (13) droite du profil de coupe (9) du corps de pivotement (6) dudit dispositif de fraisage (1) ;
    - si ledit procédé de plaquage de chants comprend la réalisation de l'étape d'arrondissage, ledit dispositif de fraisage (1) est réglé, par l'intermédiaire de ladite unité de commande (100), afin de disposer ledit outil de fraisage (5) dans la position avancée pour couper le bord de revêtement (B) par la section d'arrondissage (12) arqué du profil de coupe (9) du corps de pivotement (6) dudit dispositif de fraisage (1).
  11. Procédé de plaquage de chants selon la revendication 10, caractérisé en ce que, lorsque ledit outil de fraisage (5) se trouve dans ladite position rétractée, la section d'arrondissage (12) du profil de coupe (9) dudit corps de pivotement (6) est disposée à l'extérieur de la zone opérationnelle (4) de ladite tête de fraisage (3).
EP17172843.9A 2016-05-24 2017-05-24 Machine de plaquage de chants munie d'un dispositif de fraisage et procédé de fonctionnement d'une telle machine de plaquage de chants Active EP3248745B1 (fr)

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CN108098962A (zh) * 2017-12-13 2018-06-01 广州荷力胜蜂窝材料股份有限公司 一种蜂窝板镶边机
IT201800005129A1 (it) * 2018-05-07 2019-11-07 Dispositivo di fresatura per macchina bordatrice e metodo di funzionamento di detto dispositivo di fresatura
IT201800006497A1 (it) 2018-06-20 2019-12-20 Dispositivo di fresatura per macchina bordatrice
CN111391061B (zh) * 2020-04-27 2022-06-28 南兴装备股份有限公司 一种自动封边机的加工方法

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DE10229775C1 (de) * 2002-07-03 2003-07-10 Grotefeld Maschb & Vertriebs G Kapp- und Kantenrundungs-Aggregat
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EP2886272A1 (fr) * 2013-12-17 2015-06-24 Homag Holzbearbeitungssysteme GmbH Dispositif et méthode de traitement d'une pièce

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ITMO20070226A1 (it) * 2007-07-06 2009-01-07 Scm Group Spa Apparato per fresare
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US4792266A (en) * 1987-03-27 1988-12-20 Willis Lawrence E Rotary finishing tool
DE3732810C1 (en) * 1987-09-29 1989-04-13 Hornberger Maschbau Gmbh Device for working the edges of continuously moving plate-like workpieces
ES2208081A1 (es) * 2001-05-22 2004-06-01 S.A.G. Centro Tecnologico Italiano S.P.A Maquina para la colocacion de bordes, simples o doble, automatica, de tipo perfeccionado para la preparacion de bordes de piezas planas.
DE10229775C1 (de) * 2002-07-03 2003-07-10 Grotefeld Maschb & Vertriebs G Kapp- und Kantenrundungs-Aggregat
EP2886272A1 (fr) * 2013-12-17 2015-06-24 Homag Holzbearbeitungssysteme GmbH Dispositif et méthode de traitement d'une pièce

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