MACHINING DEVICE FOR MACHINING A WORKPIECE NARROW SIDE AND METHOD

Abstract

The invention relates to a machining device for machining a narrow side of an, in particular plate-shaped workpiece. Such a machining device can particularly be used in the field of the furniture and component industry. Machining device has: a machining unit for machining a narrow side of a workpiece, a conveyor unit for moving the workpiece in a transport direction relative to the machining unit, a detection unit for detecting an optical and/or three-dimensional structure of the workpiece moved by means of the conveyor unit, and a holding unit for holding the workpiece at the conveyor unit at least between the position of the detection unit and the machining unit.

Claims

1. A machining device, comprising: a machining unit for machining a narrow side of a workpiece; a conveyor unit for conveying the workpiece in a transport direction relative to the machining unit; a detection unit for detecting an optical and/or three-dimensional structure of the workpiece moved by means of the conveyor unit; and a holding unit for holding the workpiece on the conveyor unit at least between the position of the detection unit and the machining unit.

2. The machining device according to claim 1, wherein the machining device comprises a control unit that is configured to output control commands for moving the machining unit on the basis of the detection result of the detection unit.

3. The machining device according to claim 1, wherein the machining unit is movable transversely to the transport direction of the workpiece on the basis of the detection result of the detection unit.

4. The machining device according to claim 3, wherein the machining unit is moved perpendicular to the transport direction of the workpiece.

5. The machining device according to claim 1, wherein the holding unit has a top pressure belt and/or the conveyor unit has a chain track.

6. The machining device according to claim 1, wherein the detection unit comprises a camera.

7. The machining device according to claim 6, wherein the camera is a CCD camera.

8. The machining device according to claim 6, wherein a lens of the camera points upwards in the vertical direction.

9. The machining device according to claim 1, wherein the machining device comprises a servo motor or linear motor to move the machining unit.

10. A machining installation, comprising: a machining device according to claim 1; and a longitudinal profiling machine for introducing a profile into a narrow side of the workpiece arranged downstream from the machining device, the longitudinal profiling machine having an alignment ruler to align the workpiece on the narrow side machined by the machining unit.

11. A method for machining a narrow side of a workpiece, comprising the steps: moving the one workpiece having an optical and/or three-dimensional structure by means of a conveyor device in a transport direction; detecting the optical and/or three-dimensional structure of the moved workpiece; and moving a machining unit for machining a narrow side of the workpiece the basis of the detection result, the workpiece being held on the conveyor device at least between the detection and the machining with the machining unit.

12. The method according to claim 11, wherein the workpiece is plate-shaped.

13. The method according to claim 11, wherein the workpiece comprises wood or wood materials.

14. The method according to claim 11, wherein a reference edge that is oblique or curved to the transport direction is formed on the workpiece by the machining unit.

15. The method according to claim 11, wherein the workpiece is clamped continuously between the detection and the machining.

16. The method according to claim 15, wherein the workpiece is clamped continuously by means of a top pressure belt.

17. The method according to claim 11, wherein the machining unit is moved transversely to the transport direction.

18. The method according to claim 17, wherein the machining unit is moved perpendicular to the transport direction.

19. The method according to claim 11, wherein the detecting unit detects on a front edge of the workpiece a difference between the narrow side of the workpiece and the optical and/or three-dimensional structure and the deviations between the narrow side of the workpiece and the optical and/or three-dimensional structure detected along the workpiece are defined as waypoints of the machining unit.

20. The method according to claim 11, wherein after a machining by means of the machining unit, the workpiece is fed into a longitudinal profiling machine for introducing a profile into a narrow side of the workpiece.

21. The method according claim 11, wherein the optical and/or three-dimensional structure of the moved workpiece is detected by means of a camera.

22. The method according to claim 21, wherein the camera is a CCD camera.

23. The method according to claim 21, wherein a lens of the camera points upwards in the vertical direction.

24. The method according to claim 11, wherein the machining unit forms a flat and/or profiled reference edge or finished cut on the workpiece.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0032] FIG. 1 shows a plan view of an embodiment of the machining device according to the invention.

[0033] FIG. 2 is a plan view of a longitudinal profiling machine which can be connected to the machining device according to FIG. 1.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0034] The enclosed figures explain one embodiment of the invention in detail. Modifications of certain features of the described embodiment can be combined with other variants in order to form further embodiments of the invention. Although the embodiment described below is not to be considered restrictive, features can further specify the invention defined in the claims.

[0035] The machining device 10 shown in FIG. 1 for machining a narrow side of a workpiece W is used in the field of the furniture industry to prepare the corresponding workpiece for a further machining. Specifically, such a workpiece may be a floor panel which is provided on one main side with a chamfer extending in the longitudinal direction of the floor panel.

[0036] In particular, a reference edge is supposed to be inserted into the respective workpieces W by means of the machining device 10, with the reference edge in turn serving as the reference area for subsequent machining steps.

[0037] The machining device 10 comprises a conveyor unit 11, which is presently configured as a belt conveyor. For example, the conveyor unit 11 moves workpieces at a speed of 200 m/min, for example, with the workpieces to be machined, for example, being spaced 50 mm or more from one another. The workpieces W are fed substantially parallel to the transport direction, with the transport direction being indicated in FIG. 1 by a corresponding arrow.

[0038] Due to the movement by means of the conveyor unit 11, the workpiece W enters the area of a travelling holding unit 12, which in this example is configured as a top pressure belt. The holding unit 12 makes it possible to keep the workpiece in a clamped state during a continuous movement with the conveyor unit 11.

[0039] After the workpiece W has been clamped in this way with the holding unit 12, an optical and/or three-dimensional structure on the main side of the workpiece W (upper side in the plan view according to FIG. 1) can be detected by a detection unit 15 (in particular a CCD camera). According to the embodiment, the detection unit (camera) 15 is arranged beneath the conveyor unit so that the lens of the detection unit 15 faces upwards in the vertical direction. Thus, the decor provided on the underside of the workpiece can be detected with the detection unit 15.

[0040] Since the workpiece W is held in a clamped state in the area of the detection unit 15, the position and orientation of the workpiece W and thus of the detected optical and/or three-dimensional structure is also fixed during the conveying movement by the holding unit 12. This means that the clamping of the workpiece can result in a curved, for example s-shaped, contour of the workpiece W.

[0041] In a downstream area of the machining device 10 there is a machining unit 16 (in particular a milling cutter) which is arranged to machine the narrow side of the workpiece W and thus to produce a reference edge or a finished cut.

[0042] On the basis of the information obtained by the detection unit 15, the position of the machining unit 16 is set by means of a control unit 20. The position of the machining device is guided along a calculated contour, so that the reference edge over the length of the workpiece W. is aligned exactly along an optical structure or a three-dimensional surface structure.

[0043] A longitudinal profiling machine 30 is provided in a transport direction downstream of the machining device 10. The workpiece provided with a reference edge by the machining device 10 can, for example, be guided directly from the machining device 10 to the longitudinal profiling machine 30. Alternatively, it is possible to feed the workpiece W to the longitudinal profiling machine 30 via a conveyor section (not shown), or even to store the workpiece W temporarily.

[0044] If the workpiece reaches the area of the longitudinal profiling machine 30, the workpiece W is gripped by a conveyor unit 31 of the longitudinal profiling machine 30 and guided in a transport direction (the transport direction is indicated by an arrow in FIG. 2). The longitudinal profiling machine 30 comprises a top pressure 33, which presses the workpiece W against the conveyor unit 31 and thus clamps the moving workpiece.

[0045] In the infeed area of the longitudinal profiling machine 30, there is an alignment ruler 32 which serves to align the workpiece W with the reference edge of the workpiece W. Subsequently, the workpiece W is guided through the conveyor device 31 into the area of one or more profiling tools 34, which are used to introduce a profile into a narrow side of the workpiece W. For example, a so-called click profile can be produced in a workpiece if the workpiece W is a floor panel.

[0046] In the embodiment example described here, opposing profiling tools 34 are provided in order to provide the respective workpiece W with a profile on both sides.