Board processing system

Abstract

The invention relates to a plate processing system with a processing station (1) for processing a plate-shaped workpiece (3) and a support and positioning device (2) for supporting and controlled displacement of the workpiece (3) relative to the processing station (1) in a horizontal transport plane (4) in the direction of a first linear axis (5), wherein the support and positioning device (2) has two spaced-apart support and positioning units (7, 8) for displacing the plate-shaped workpiece (3) over an intermediate space (6) between the two support and positioning units (7, 8).The machining station (1) includes a portal-like frame (9) with an upper crossbeam (10) arranged above the transport level (4) and a lower crossbeam (11) arranged below the transport level (4), wherein at least one machining unit (21, 28) movable in several axes with a motor-driven spindle (24, 29) for receiving a rotating tool is arranged on each of the upper and lower crossbeams (10, 11) of the portal-like frame (9).

Description

[0001] The invention relates to a plate processing plant according to the preamble of claim 1.

[0002] Such a plate processing system is known from WO 92 / 12816 A1. It comprises a processing station for machining a plate-shaped workpiece and a support and transport device by which a plate-shaped workpiece can be moved relative to the processing station in the direction of a first linear axis (X-axis) in a path-controlled or regulated manner. The support and transport device has two spaced-apart support and positioning units for moving the plate-shaped workpiece across a gap between the support and transport units. The processing station includes a portal-like frame with an upper crossbeam arranged above the transport plane and a lower crossbeam arranged below the transport plane.A multi-axis movable machining unit with a motor-driven spindle for holding a rotating tool is mounted on the upper and lower crossbeams. The support and positioning units are formed by support tables and gripper-shaped gripping and transport devices.

[0003] Other plate processing plants are known from US 3 295 570 A, EP 1 923 183 A1, EP 2 381 324 A1, GB 2 328 398 A and EP 1 405 693 A2.

[0004] The object of the invention is to create a plate processing system of the type mentioned above, which enables effective 6-sided processing of plate-shaped workpieces along their entire length without turning or folding the workpieces in a particularly stable design with high accuracy.

[0005] This problem is solved by a plate processing system with the features of claim 1. Advantageous further developments and beneficial embodiments of the invention are the subject of the dependent claims.

[0006] The plate processing system according to the invention comprises a processing station for processing a plate-shaped workpiece and a support and positioning device for supporting and controlled displacement of the plate-shaped workpiece relative to the processing station in a horizontal transport plane in the direction of a first linear axis. The support and positioning device has two spaced-apart support and positioning units for displacing the plate-shaped workpiece across a gap between the two support and positioning units.The machining station comprises a portal-like frame with an upper crossbeam positioned above the transport plane and a lower crossbeam positioned below the transport plane. At least one machining unit, movable in several axes, is mounted on each of the upper and lower crossbeams of the portal-like frame. This unit has a motor-driven spindle for holding a rotating tool. The two support and positioning units contain two or more parallel, circulating transport chains with externally mounted support plates for holding the workpiece. This design enables a particularly precise and stable support and positioning system.

[0007] In the panel processing system according to the invention, the panel-shaped workpieces are accessible from both above and below via the space between the two transport units. The panel-shaped workpiece can thus be processed simultaneously with high precision along its entire length and width from two opposite sides. This enables particularly efficient processing of even large-format panels on all six sides with high accuracy. The portal-like frame with the upper and lower crossbeams exhibits high rigidity, allowing for highly precise processing from all sides by the processing units arranged on it. Both the trimming work on a raw panel and all internal processing operations can be carried out with high dimensional accuracy.

[0008] The transport chains of each support and positioning unit are expediently guided on a frame-shaped carrier via front and rear deflections and can be driven continuously by a motor.

[0009] The frame-shaped supports of the support and positioning units are preferably horizontally movable by drives in the direction of the first linear axis. This allows the distance between the support and positioning units to be changed, or the distance between the support and positioning units to be optimally adjusted and adapted to the respective machining task. For example, the distance between the support and positioning units can be set between 600 mm and 1900 mm.

[0010] The transport chains can be guided by inner and outer lateral guide rollers and internal guide rollers arranged on the inside, along horizontal inner guide rails and parallel outer guide rails. The horizontal inner and outer guide rails are advantageously arranged on the top of the frame-shaped support such that a transport chain is guided with its inner and outer lateral guide rollers on the top surfaces of the horizontal inner and outer guide rails and with its internal guide rollers between the inner and outer guide rails. This not only precisely defines the height of the upper support plates on the upper run of the transport chains, but also achieves precise lateral guidance of the upper run of the transport chains for high accuracy in the Y-axis.

[0011] In a further advantageous embodiment, horizontal support rollers can be arranged at the ends of the frame-shaped supports facing the gap, lying transversely to the feed direction of the workpiece, for supporting the workpieces in the gap.

[0012] Each of the two support and positioning units can be equipped with a pressure unit featuring height-adjustable pressure elements for pressing the workpiece against the support plates of the transport chains. The pressure units can comprise a stationary section with a fixed first frame and a movable section with a second frame mounted on the carrier and adjustable along the first linear axis. Height-adjustable first and second pressure elements, designed as pressure rollers, can be mounted on the first and second frames, respectively.

[0013] The machining unit arranged on the upper crossbeam can be moved via an upper cross slide in a second linear axis perpendicular to the first linear axis and a third linear axis perpendicular to the first and second linear axes, and can be rotated about two rotary axes.

[0014] The machining unit mounted on the lower crossbeam can be moved via a lower cross slide in a second linear axis perpendicular to the first linear axis and a third linear axis perpendicular to both the first and second linear axes. Other or additional machining units or machining assemblies can also be mounted on the lower crossbeam.

[0015] Further features and advantages of the invention will become apparent from the following description of a preferred embodiment with reference to the drawing. The drawing shows: Figure 1a plate processing system according to the invention with a processing station and a support and positioning device in a front view; Figure 2 the plate processing plant of Figure 1 in a side view; Figure 3 the plate processing plant of Figure 1 in a top view; Figure 4 a plate processing plant according to the invention in one perspective; Figure 5 a detailed view of a support and positioning unit and Figure 6 a support and positioning unit with a pressure device.

[0016] The in the Figures 1 to 3The panel processing system shown in a front view, a side view, and a top view is designed to finish large-format, panel-shaped wooden components on all six sides without turning or folding the components. Such a panel processing system can be used, for example, to produce fully finished wall, roof, or ceiling elements for timber construction. The panel processing system shown includes a processing station 1 and a support and positioning device 2, by which a panel-shaped workpiece 3 can be moved relative to the processing station 1 in a horizontal transport plane 4 in the direction of a first linear axis 5 (X-axis) in a path-controlled or regulated manner.The support and positioning device 2 consists of two support and positioning units 7 and 8 spaced apart from each other by a gap 6, through which the plate-shaped workpiece 3 can be moved across the gap 6.

[0017] The processing station 1 has a portal-like frame 9 with a horizontal upper crossbeam 10 arranged above the transport level 4 and a horizontal lower crossbeam 11 arranged below the transport level 4. An upper processing unit 12, designed here as a multi-axis unit, is arranged on the upper horizontal crossbeam 10, which is arranged perpendicular to the first linear axis 5 and spans the workpiece 3, and a first lower processing unit 13, also designed as a multi-axis unit, is arranged on the lower crossbeam 11.

[0018] How particularly from Figure 2As can be seen, the upper machining unit 12, arranged on the upper crossbeam 10, comprises an upper cross slide with an upper horizontal slide 16, which is horizontally displaceable on a side surface of the crossbeam 10 via horizontal upper guide rails 14 in a second linear axis 15 (Y-axis) perpendicular to the first linear axis 5, and an upper vertical slide 18, which is vertically displaceable on the horizontal slide 16 in a third linear axis 17 (Z-axis) perpendicular to the first and second linear axes 5 and 15. A downwardly projecting, fork-shaped support 19 is rotatably mounted on the upper vertical slide 18 about a vertical first axis of rotation 20. A first machining unit 21, here designed as a motor spindle, is rotatably mounted in the fork-shaped support 19 about a second axis of rotation 22 perpendicular to the first axis of rotation 20.The machining unit 21 has a housing 23 with a rotaryally driven spindle 24, rotatable within the housing 23 about a longitudinal axis of the housing 23, for holding a milling cutter, drill, or other rotating tool. The machining unit 21 thus has a directly driven spindle 24 with an integrated tool interface.

[0019] The first lower machining unit 13, designed here as a 3-axis unit, is arranged on a side surface of the lower horizontal crossbeam 11, which is perpendicular to the first linear axis 5 and faces the space 6. The first lower machining unit 13 comprises a lower cross slide with a lower horizontal slide 26, which is guided horizontally on a side surface of the lower crossbeam 11 via horizontal lower guide rails 25 in a second linear axis 15 (Y-axis) perpendicular to the first linear axis 5, and a lower vertical slide 27, which is vertically displaceable on the horizontal slide 26 in a third linear axis 17 (Z-axis) perpendicular to the first and second linear axes 5 and 15.On the lower vertical slide 27, a machining unit 28, also designed as a motor spindle, is arranged with a rotary-driven and upwardly open spindle 29 for receiving a milling cutter, drill or other rotating tool.

[0020] A second lower processing unit 30, designed as a saw unit, is also slidably guided on the lower crossbeam 11 via the guide rails 25 in the direction of the second linear axis 15. Further processing units can also be arranged on the lower crossbeam 11. Optionally, deep-hole drilling units 32 can also be attached to a further lower crossbeam 31 that is offset parallel to the lower crossbeam 11.

[0021] Two tool changers, 33 and 34, are arranged on the two side walls of the portal-like frame for automatic tool changes. The first tool changer, 33, is designed for smaller tools, while the second tool changer, 34, is designed for larger tools. Various tools can be exchanged via the respective machining units 12, 13, and 30 using a pick-up principle.

[0022] During the Figures 1 to 3In the illustrated embodiment of a panel processing plant, the lower processing units 13 and 30 are arranged in a pit 35, while the portal-like frame 9 of the processing station 1 and the two support and positioning units 7 and 8 of the support and positioning device 2 can be arranged on a hall floor 36. However, the portal-like frame 9 of the processing station 1 and the two support and positioning units 7 and 8 of the support and positioning device 2 can also be arranged on bases 37 and 38 made of concrete or the like, as shown in Figure 4 shown.

[0023] The two support and positioning units 7 and 8, arranged before and after the gap 6 in the transport direction of the workpiece 3, each contain two or more parallel circulating transport chains 39, which according to Figure 5The transport chains 39 are guided on a frame-shaped support 40 via front and rear deflections 41 and can be driven continuously by a motor 42. The individual chain links 43 of the transport chains 39 have a support plate 44 on their outer side, which can be replaced if necessary, for supporting the plate-shaped workpiece 3. The support plates 44 can be made of a dimensionally stable and wear-resistant plastic with correspondingly high friction. Each of the transport chains 39 is guided by inner and outer lateral guide rollers 45 and 46 and inner guide rollers 47 arranged on the inside along a horizontal inner guide rail 48 and a parallel outer guide rail 49 on the top of the frame-shaped support 40.The guide rails 48 and 49 are arranged on the upper surface of the frame-shaped support 40 such that a transport chain 39, with its inner and outer lateral guide rollers 45 and 46, is guided on the upper surfaces of the inner guide rail 48 and the parallel outer guide rail 49, and with the additional inner guide rollers 47 between the two guide rails 48 and 49. This not only precisely defines the height of the upper support plates 44, which serve as bearing surfaces, on the upper run of the transport chain 39, but also ensures precise lateral guidance of the upper run of the transport chain 39 for high accuracy in the Y-axis. The upper support plates 44 on the upper run of the transport chain 39 define the transport plane 4 for moving the workpiece 3 in the direction of the X-axis.

[0024] At the ends of the frame-shaped supports 40 of both support and positioning units 7 and 8 facing the space 6, horizontal support rollers 50 are arranged transversely to the feed direction of the workpiece 3 to support the workpiece 3 against the space 6. The diameter of the support rollers 50 is precisely adapted to the height of the upper support plates 44 on the upper run of the transport chains 39, so that the workpiece 3 is supported but not lifted by the support rollers 50 during transport from one support and positioning unit 7 and 8 to the other. The frame-shaped supports 40 of the support and positioning units 7 and 8 are adjustable in the X-direction, so that the distance between the two support and positioning units 7 and 8 can be changed and adjusted as needed.

[0025] Between the transport chains 39 are in Figure 5Recognizable measuring devices 51 for detecting the feed movement of the workpiece 3 are arranged. These devices comprise a belt or chain guided on a carrier via deflection rollers, a pressure device moving with the belt or chain for pressing the belt or chain against the underside of the workpiece 3, and a sensor for detecting the movement of the belt or chain. The moving pressure elements allow the belt or chain to be pressed against the workpiece 3 to achieve a slip-free connection without any sliding friction between the pressure element and the belt or chain. Details of the measuring device are described in detail in DE 10 2013 104 241 A1. This document is expressly referenced with regard to the features of the measuring device.

[0026] The two essentially identical support and positioning units 7 and 8 are in Figure 6Particularly easily identifiable pressure units 52 with pressure elements 53 and 54 arranged above the transport chains 39 and adjustable in height for pressing a workpiece 3 onto the support plates 44 of the transport chains 39 are arranged. The pressure units 52 are constructed in two parts and have a stationary part with a fixed first frame 55 and a moving part with a second frame 56 arranged on the carrier 40 and movable together with it in the direction of the X-axis. Several first pressure elements 53, designed as pressure rollers, are arranged on the stationary first frame 55 and are adjustable in height via first drives 57. Second pressure elements 54, also designed as pressure rollers, are arranged on the second frame 56, which moves with the carrier 40, and are adjustable in height via second drives 58. The frame-shaped carriers 40 of the two support and positioning units 7 and 8 are connected via Figure 1The third drive 59 shown is horizontally movable in the direction of the first linear axis 5. This allows the distance between the two support and positioning units 7 and 8 to be adjusted to the respective machining tasks and to ensure that the support is positioned as close as possible to the tool.

[0027] Lateral supports 60, designed as roller tracks, can be arranged on both longitudinal sides of the frame-shaped support 40. However, the horizontal supports 60 are not strictly necessary, since the workpiece 3 rests on the upper support plates 44 of the transport chains 39, and the rotatable rollers of the roller track supports 60 are slightly offset downwards relative to the support plates 44, thus primarily serving as a safety device.

[0028] With the help of the above-described panel processing system, both the trimming work on a raw panel and all internal processing operations can be carried out with high precision without the need for time-consuming turning or folding of the panel-shaped workpieces. Reference symbol list

[0029] 1 Machining station 2 Support and positioning device 3 Workpiece 4 Transport level 5 First linear axis 6 Intermediate space 7 First support and positioning unit 8 Second support and positioning unit 9 Frame 10 Upper crossbeam 11 Lower crossbeam 12 Upper machining unit 13 First lower machining unit 14 Upper guide rail 15 Second linear axis 16 Upper horizontal slide 17 Third linear axis 18 Upper vertical slide 19 Beam 20 First rotary axis 21 Machining unit 22 Second rotary axis 23 Housing 24 Spindle 25 Lower guide rail 26 Lower horizontal slide 27 Lower vertical slide 28 First lower machining unit 29 Spindle 30 Second lower machining unit 31 Another lower crossbeam 32 Deep hole drilling unit 33 First Tool changer 34 Second tool changer 35 Pit 36 ​​Hall floor 37 Base 38 Base 39 Transport chains 40 Beam 41 Deflection 42 Motor 43 Chain link 44 Support plate 45 Inner lateral support roller 46 Outer lateral support roller 47 Inner48 Support roller 49 Horizontal inner guide rail 50 Horizontal outer guide rail 51 Support roller 52 Measuring device 53 Pressure unit 54 First pressure element 55 Second pressure element 56 First frame 57 Second frame 58 First drive 59 Second drive 60 Support

Claims

1. Panel processing installation comprising a machining station (1) for machining a plate-shaped workpiece (3) and further comprising a support and positioning device (2) for supporting and controlled displacement of the workpiece (3) relative to the machining station (1) in a horizontal transportation plane (4) in the direction of a first linear axis (5), wherein the support and positioning device (2) comprises two support and positioning units (7, 8) spaced apart from each other, for displacement of the plate-shaped workpiece (3) across a gap (6) between the two support and positioning units (7, 8), and wherein the machining station (1) comprises a portal-type frame (9) with an upper crossbeam (10) positioned above the transportation plane (4) and a lower crossbeam (11) positioned below the transportation plane (4), wherein at each of the upper and lower crossbeam (10, 11) of the portal-type frame (9) at least one machining unit (21, 28), movably in a plurality of axes, with a motor-driven spindle (24, 29) for holding a rotating tool, is arranged, characterized in that, viewed in direction of movement of the workpiece (3), the two support and positioning units (7, 8) arranged before and after the gap (6) comprise two or more transportation chains (39) revolving in parallel with externally arranged support plates (44) for supporting the workpiece (3).

2. Panel processing installation according to claim 1, characterized in that the transportation chains (39) of each support and positioning unit (7, 8) are guided on a frame-shaped carrier (40) by anterior and posterior deflection devices (41) and driven circumferentially by an engine (42).

3. Panel processing installation according to claim 2, characterized in that the frame-shaped carriers (40) of the support and positioning units (7, 8) are movable horizontally in direction of the first linear axis (5) by means of drives (59).

4. Panel processing installation according to one of claim 1 to 3, characterized in that the transportation chains (39) are guided by inner and outer lateral guide rollers (45, 46) and inner guide rollers (47) arranged on the inner side along horizontal inner guide rails (48) and outer guide rails (49) running parallel thereto.

5. Panel processing installation according to claim 4, characterized in that the horizontal inner and outer guide rails (48, 49) are arranged on the upper side of the frame-shaped carrier (40) such that a transportation chain (39) is guided with its inner and outer lateral guide rollers (45, 46) on the upper sides of the horizontal inner and outer guide rails (48, 49) and is guided with its inner guide rollers (47) between the inner and outer guide rails (48, 49).

6. Panel processing installation according to one of claim 2 to 5, characterized in that horizontal support rollers (50) positioned perpendicular to the feed direction of the workpiece (3) are arranged at the ends of the frame-shaped carriers (40) facing the gap (6).

7. Panel processing installation according to one of claim 1 to 6, characterized in that a pressing unit (52) with height-adjustable pressing elements (53, 54) for pressing the workpiece (3) on the support plates (44) of the transportation chain (39) is arranged on both of the support and positioning units (7, 8) respectively.

8. Panel processing installation according to claim 7, characterized in that the pressing units (52) comprise a stationary portion with a static first frame (55) and a movable portion with a second frame (56) arranged on the frame-shaped carrier (40) and jointly adjustable in the direction of the first linear axis (5).

9. Panel processing installation according to claim 8, characterized in that on the first frame (55) and the second frame (56) height-adjustable pressing elements (53, 54) configured as pressure rolls are arranged.

10. Panel processing installation according to one of claim 1 to 9, characterized in that the machining unit (21) arranged at the upper crossbeam (10) is movable via an upper cross slide (16, 18) along a second linear axis (15) perpendicular to the first linear axis (5) and along a third linear axis (17) perpendicular to both the first and second linear axes (5, 15) and is rotatable around two rotation axes (20, 22).

11. Panel processing installation according to one of claim 1 to 10, characterized in that the machining unit (28) arranged at the lower crossbeam (11) is movable via a lower cross slide (26, 27) along a second linear axis (15) perpendicular to the first linear axis (5) and along a third linear axis (17) perpendicular to both the first and second linear axes (5, 15) and is rotatable around two rotation axes (20, 22).

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