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(11) | EP 2 025 480 A1 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Machine for working door and window component parts of wood or similar |
| (57) A machine for working door and window component parts (2) of wood or similar has
a bed (3) extending in a first direction (4); cross members (16) mounted on the bed
(3) and parallel to a second direction (9) crosswise to the first direction (4); at
least one clamping device (17) fitted to each cross member (16) to clamp at least
one component part (2); a bridge crane (6) movable along the bed (3) in the first
direction (4); and two machining units (12, 29) movable along the bridge crane (6)
in the second direction (9); one (29) of the machining units being designed to detach
a bead (43) from the component part (2) and fasten the bead (43) to the same component
part (2).
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[0001] The present invention relates to a machine for working door and window component parts of wood or similar.
[0002] In the following description, "door and window" is intended to mean doors, windows, and furniture doors comprising an annular frame, and a panel, e.g. a pane of glass, fitted inside the frame.
[0003] Door and window component parts are worked on a machine comprising an elongated bed with two longitudinal guide members parallel to a first horizontal direction; a number of cross members fitted between the longitudinal guide members and movable along the longitudinal guide members in the first direction; at least one clamping device fitted to each cross member to clamp at least one component part; a bridge crane movable in the first direction along the bed; and a machining unit movable along the bridge crane in a second horizontal direction crosswise to the first direction.
[0004] To begin with, the component part is normally elongated and substantially parallelepiped-shaped, is clamped by the clamping device in a direction parallel to the first direction, and is shaped longitudinally to form a cavity bounded vertically by two ribs parallel to the first direction, and one of which is detached from the component part to form a bead by which, in use, to secure said panel to the other rib.
[0005] Known machines of the above type for working door and window component parts of wood or similar have several drawbacks, mainly due to the bead detached from the component part falling on the cross members, so the machine must be stopped to allow the operator to remove the bead from the machine, thus resulting in relatively long operating cycles.
[0006] Moreover, since each bead is eventually fitted purely randomly to a respective component part, known machines of the above type for working door and window component parts of wood or similar have the further drawback of the grain of the component part failing to match that of the bead and so impairing the look of the door or window.
[0007] It is an object of the present invention to provide a machine for working door and window component parts of wood or similar, designed to eliminate the above drawbacks, and which is cheap and easy to produce.
[0008] According to the present invention, there is provided a machine for working door and window component parts of wood or similar, as claimed in the accompanying Claims.
[0009] A non-limiting embodiment of the present invention will be described by way of example with reference to the accompanying drawings, in which :
Figure 1 shows a schematic plan view, with parts removed for clarity, of a preferred embodiment of the machine according to the present invention;
Figure 2 shows a schematic view in perspective of a detail in Figure 1;
Figure 3 shows a schematic of the operating principle of the Figure 2 detail;
Figure 4 shows a schematic view in perspective of a variation of the Figure 1 machine.
[0010] Number 1 in Figure 1 indicates as a whole a machine for working door and window component parts 2 made of wood or similar, and which are initially elongated and substantially parallelepiped-shaped.
[0011] Machine 1 comprises an elongated, substantially U-shaped bed 3 extending in a horizontal direction 4 and having two lateral longitudinal guide members 5 parallel to direction 4.
[0012] Machine 1 also comprises a bridge crane 6 in turn comprising an upright 7, which is fitted in known manner to bed 3 to move linearly in direction 4 along bed 3, under the control of a known actuating device not shown, and is fitted on its free end with a cross member 8 extending over bed 3 in a horizontal direction 9 crosswise to direction 4, and bounded laterally in direction 4 by two opposite faces 10, 11.
[0013] Bridge crane 6 supports a known machining head 12 fitted to face 10, fitted in known manner to cross member 8 to move linearly along cross member 8 in direction 9, and comprising, in the example shown, at least two electric spindles 13, which have respective longitudinal axes 14 parallel to a vertical direction 15 perpendicular to directions 4 and 9, are fitted in known manner to head 12 to move in direction 15, and are each designed to receive and retain a respective tool or aggregate (not shown).
[0014] Machine 1 also comprises a store M for changing the tools and/or aggregates (not shown) fitted to electric spindles 13, and which is carried by bridge crane 6, and extends along an endless path through upright 7, and is mounted asymmetrically in direction 4 with respect to cross member 8.
[0015] Machine 1 also comprises a number of cross members 16 - hereinafter referred to as "work surfaces" - which extend between longitudinal members 5 in direction 9, and are fitted to longitudinal members 5 to move along longitudinal members 5 in direction 4, either manually or by means of respective known actuating devices not shown.
[0016] Work surfaces 16 support a number of vises 17 which are movable between a grip position and a release position to grip and release at least one component part 2, and the layout of which on work surfaces 16 substantially depends on the size of and the work to be carried out on component parts 2.
[0017] Machine 1 also comprises a feed device 18 for feeding component parts 2, and in turn comprising a bed 19 located alongside bed 3 in direction 4 and supporting a number of belt conveyors 20, which are aligned in direction 4, extend in respective vertical planes parallel to one another and to direction 9, have respective coplanar top conveying branches, and extend in direction 9 between a loading station 21 and an unloading station 22, where the unmachined component parts 2 are loaded and unloaded on and off device 18 respectively.
[0018] Component parts 2 are transferred between feed device 18 and vises 17 by a grip-and-carry unit 23 comprising an arm 24, which projects in direction 4 from face 11 of cross member 8, is bounded in direction 9 by two opposite faces 25, 26, and is fitted in known manner to cross member 8 to move linearly in direction 9 along cross member 8, under the control of a known actuating device not shown.
[0019] In the example shown, arm 24 supports two grip-and-carry devices 27, 28 defined by respective grippers fitted to face 25; in the example shown, device 27 is fixed to arm 24 in direction 4, and device 28 is fitted in known manner to arm 24 to move linearly in direction 4 along arm 24, under the control of a known actuating device not shown.
[0020] As shown in Figures 1 and 2, arm 24 also supports a machining unit 29 fitted to face 26 and comprising a supporting plate 30 fitted to arm 24 in fixed manner or movably in direction 4; and a slide 31 which is fitted movably to plate 30, and is connected by a screw-nut screw coupling to a screw 32 rotated by an electric motor 33 to move slide 31 linearly in direction 15.
[0021] Slide 31 supports an electric motor 34 which, with the interposition of a belt drive 35, rotates two shafts 36 connected to slide 31 to rotate about respective longitudinal axes 37 parallel to direction 9, and fitted respectively with a notcher 38 and a blade cutter 39 arranged successively in direction 4.
[0022] In actual use, component parts 2 are loaded successively onto device 18 - manually or by means of a known loader not shown - at loading station 21, and are fed successively in steps to unloading station 22.
[0023] Once component parts 2 are loaded onto feed device 18, the component part 2 at station 22 is transferred by grip-and-carry unit 23 to vises 17, is clamped by vises 17 in a direction parallel to direction 4, and is shaped longitudinally by machining head 12 to form a cavity 40 (Figure 3a) which is open on the side facing a face 2a of component part 2, is open longitudinally in direction 4, is bounded in direction 15 by two ribs 41, 42 parallel to each other and to direction 4, and is designed to receive and house, in use, a panel (not shown) of the relative door or window (not shown).
[0024] At this point, rib 41 is detached from component 2 by notcher 38 and blade cutter 39 to form a bead 43 (Figures 3b and 3c) by which, in use, to secure the panel (not shown) of the door or window (not shown) to rib 42, and which is fastened to component part 2 by a number of fasteners 44 inserted between bead 43 and component part 2 by a known inserting device 45 fitted to slide 31, on the opposite side of blade cutter 39 to notcher 38 (Figure 3d).
[0025] The Figure 4 variation differs from the embodiment shown in the other drawings solely by feed device 18 and grip-and-carry unit 23 being eliminated, and machining unit 29 being mounted directly on face 11 of cross member 8 with the interposition of a slide 46 fitted to cross member 8 to move linearly along cross member 8 in direction 9.
1. A machine for working door and window component parts (2) of wood or similar, the
machine comprising a bed (3) extending in a first direction (4); at least two cross
members (16) extending in a second direction (9) crosswise to the first direction
(4), and movable along the bed (3) in the first direction (4); at least one clamping
device (17) fitted to each cross member (16) to clamp at least one component part
(2); a bridge crane (6) movable along the bed (3) in the first direction (4); and
at least a first machining unit (12) movable along the bridge crane (6) in the second
direction (9); and the machine being characterized by also comprising a second machining unit (29) movable along the bridge crane (6) in
the second direction (9) to detach a bead (43) from the component part (2) and fasten
the bead (43) to the same component part (2).
2. A machine as claimed in Claim 1, wherein the second machining unit (29) is movable
in a third direction (15) perpendicular to said first and said second direction (4,
9).
3. A machine as claimed in Claim 1 or 2, wherein the first machining unit (12) comprises
at least one electric spindle (13) to which can be fitted at least one tool or aggregate
for working the component part (2); a store (M) being provided to enable the electric
spindle (13) to change the tool or aggregate.
4. A machine as claimed in Claim 3, wherein the bridge crane (6) comprises a further
cross member (8) extending over the bed (3) in the second direction (9); the store
(M) being mounted on the bridge crane (6) asymmetrically in the first direction (4)
with respect to the further cross member (8).
5. A machine as claimed in any one of the foregoing Claims, wherein the second machining
unit (29) comprises at least one blade (38, 39) for detaching the bead (43) from the
component part (2); and an inserting device (45) for inserting at least one fastener
(44) between the bead (43) and the component part (2).
6. A machine as claimed in Claim 5, wherein the second machining unit (29) comprises
a first blade (38) for notching the component part (2); and a second blade (39) for
detaching the bead (43) from the component part (2).
7. A machine as claimed in Claim 6, wherein the second machining unit (29) comprises
two parallel supporting shafts (36) for supporting the first and second blade (38,
39) respectively; and an electric motor (34) for rotating the supporting shafts (36)
about respective longitudinal axes (37).
8. A machine as claimed in any one of the foregoing Claims, wherein the bridge crane
(6) comprises a further cross member (8) extending over the bed (3) in the second
direction (9) and bounded in the first direction (4) by two opposite faces (10, 11);
said first and said second machining unit (12, 29) being mounted on a first and a
second said face (10, 11) respectively.
9. A machine as claimed in any one of Claims 1 to 7, and also comprising a grip-and-carry
unit (23) for gripping and carrying the component parts (2), and which is fitted to
the bridge crane (6) to move in the second direction (9) and transfer the component
parts (2) to and from the clamping devices (17).
10. A machine as claimed in Claim 9, wherein the second machining unit (29) is fitted
to the grip-and-carry unit (23) to move in the second direction (9) with the same
law of motion as the grip-and-carry unit (23).
11. A machine as claimed in Claim 9 or 10, wherein the bridge crane (6) comprises a further
cross member (8) extending over the bed (3) in the second direction (9) and bounded
in the first direction (4) by two opposite faces (10, 11); the first machining unit
(12) and the grip-and-carry unit (23) being mounted on a first and a second said face
(10, 11) respectively.
12. A machine as claimed in Claim 11, wherein the grip-and-carry unit (23) comprises a
supporting arm (24) projecting from the bridge crane (6) in the first direction (4)
and bounded in the second direction (9) by two opposite further faces (25, 26); and
at least two grip-and-carry devices (27, 28) movable with respect to each other along
the supporting arm (24) in the first direction (4); the grip-and-carry devices (27,
28) and the second machining unit (29) being mounted on a first and a second said
further face (25, 26) respectively.
13. A machine as claimed in Claim 12, wherein the second machining unit (29) is movable
along the supporting arm (24) in the first direction (4).