Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
  • B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
  • B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
  • B27M1/08—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching by multi-step processes
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
  • B27F—DOVETAILED WORK; TENONS; SLOTTING MACHINES FOR WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES
  • B27F1/00—Dovetailed work; Tenons; Making tongues or grooves; Groove- and- tongue jointed work; Finger- joints
  • B27F1/02—Making tongues or grooves, of indefinite length

Definitions

• the invention relates to a device for processing workpieces made of wood, plastic and the like according to the preamble of claim 1 and a method for processing such workpieces according to the preamble of claim 7 or 13.
• the workpieces are clamped in feed units, which are provided with collets for clamping the workpieces.
• the collets lie next to each other at least over most of the length of the workpiece.
• all collets are used for clamping the workpiece. If machining operations are to be carried out on specific areas of the workpiece, the collets usually located there can be lowered so that the corresponding workpiece area is accessible for machining.
• the feed units and the adjustment for the collets are complex and expensive to manufacture the device.
• the invention has the object of providing the generic device and the generic method in such a way that the workpieces can be clamped reliably and flexibly, without the need for a complex adjustment is required.
• the tensioning device consists of the first and the second tensioning carriages, which can each be positioned independently of one another.
• the workpieces can be flexibly tensioned with the tensioning carriages, depending on the length and the area in which machining is to take place.
• the individual Spannwage ⁇ can be moved to the desired location of the workpieces in the longitudinal direction, so that the workpieces can be optimally tensioned for subsequent processing. This makes it easy to position the clamping carriages and clamp the workpiece with them so that a workpiece area is accessible for machining.
• the workpiece can be clamped with the first and second clamping carriages from two sides to about half the width.
• the first tensioning carriages are arranged in mirror image to the second tensioning carriages. This makes it very easy to keep the workpieces always clamped in the transfer of the first to the second tensioner.
• the tensioning carriages each have an upper and a lower collet chucking the workpiece at the top and at the bottom.
• the workpiece can be clamped securely with the clamping carriage, so that it is held reliably during processing.
• At least one of the first clamping carriages, with which the workpiece is clamped is provided with at least one stop for the workpiece, it can be clamped with exact position.
• the stop is adjustable transversely to the direction of movement of the clamping carriage.
• the clamping carriages are moved synchronously with the clamped workpiece.
• the workpiece to be machined is first clamped transversely to the feed direction to about half the width. Then the workpiece is machined on one side. Then the workpiece is stretched so that it is clamped from the opposite side to about half the width. In the further course, the workpiece is then further processed.
• the workpiece always remains clamped during re-clamping.
• the first tensioning carriages clamp the workpiece while it is engaged by the second tensioning carriages. Only when the second clamping carriages have clamped the workpiece, the collets of the first clamping carriages are released. In this way it is ensured that the workpiece during transfer or when re-clamping its intended for a high-quality processing position.
• the workpiece is guided through two successive processing stations and processed there each.
• different processing methods can be used.
• the workpiece is machined differently in at least one, but preferably in both processing stations.
• sawing, milling or drilling operations can be performed on the workpiece.
• at least one workpiece is simultaneously processed in each case in two processing stations.
• Each workpiece is clamped with corresponding clamping carriages.
• FIG. 1 shows a schematic representation of an inventive device for machining workpieces
• FIG. 2 is a processed in the apparatus of FIG. 1 workpiece in perspective
• FIG. 3 shows the workpiece according to FIG. 2 in a side view
• FIG. 4 shows the workpiece according to FIG. 2 in end view, FIG.
• FIG. 6 is a schematic representation of the tensioning device of two tensioning carriages of the device according to the invention according to FIG. 1.
• workpieces 1 made of wood are processed in a manner to be described on at least two opposite sides.
• the elongate workpieces 1 are fed transversely to their longitudinal direction via a transverse conveyor 2.
• the workpieces 1 may previously be planed or otherwise processed, for example.
• the workpieces 1 pass from the cross conveyor 2 on clamping carriage 3, on which the workpieces 1 are tightened.
• the device has several tensioning carriages 3, each for can be moved and positioned individually. Depending on the length of the workpiece 1, a corresponding number of clamping carriage 3 is used to clamp the workpiece 1.
• the clamping carriage 3 can be moved individually in the longitudinal direction of the workpieces 1 and in the feed direction 6, the workpieces 1 can be stretched flexibly, depending on the length and depending on the area where machining is to be performed on the workpiece.
• the tensioning carriage 3 are then moved with the tensioned workpiece 1 at a synchronous speed.
• the workpiece 1 for example, processed longitudinally or positioned for processing.
• the tensioning carriage 3 On the tensioning carriage 3, the workpieces are transported along a transport path 4.
• the workpieces 1 are stretched on the tensioning carriage 3 so that they are transported in their longitudinal direction through the device.
• a first processing station 5 the workpieces are processed at least on their right in the direction of transport 6 long side.
• a transfer area 7 in which the workpieces 1 are taken over by second tensioning carriage 8, which are arranged approximately in mirror image to the first tensioning carriage 3.
• second tensioning carriage 8 On the second clamping carriage 8, the machined on the right longitudinal side workpieces 1 are recorded so that they can be processed in a second processing station 9 at least on its left in the transport direction 6 longitudinal side.
• the processed on both sides of the workpieces 1 1 handed over a cross conveyor 10, which transports the workpieces 1 transversely to its longitudinal direction from the device and optionally supplies a downstream processing.
• the clamping carriage 8 are as well as the clamping carriage 3 independently moved and positioned individually.
• the workpieces 1 are taken over in a manner to be described by the clamping carriage 8 so that they can be further processed in the processing station 9.
• the tensioning carriage 8 are also moved with the tensioned workpiece 1 at a synchronous speed.
• the tensioning carriage 3 travel on a rail 1 1, which is located on the left in the transport direction 6 longitudinal side of the transport path.
• the tensioning carriage 8 run on a rail 12 which is provided on the right in the transport direction 6 longitudinal side of the transport path 4. In the transfer area 7, the rails 1 1, 12 overlap each other. This makes it possible that the clamping carriage 3, 8 can be positioned side by side so that the workpiece 1 can be taken over without change in position of the second clamping carriage 8.
• part of the tensioning carriage 3 is initially in a parking position 13.
• a different number of tensioning carriages 3 is used.
• Each tensioning carriage 3 has an upper and a lower collet 14, 15 (FIG. 6) with which the workpiece 1 can be clamped on the upper and lower sides 18, 19.
• At least the upper collet 14 is vertically adjustable to the transport direction 6, so that the workpiece 1 can easily get on the clamping carriage 3 and can be stretched on it.
• the adjustment is preferably pneumatic, but can also be done hydraulically or by electric motor.
• the lower collet 15 is height-adjustable to pass the workpiece 1 in a manner to be described to the second clamping carriage 8 can.
• a support could be provided, which is advantageous height adjustable or easily lowered.
• each clamping carriage 3 is advantageously provided with at least one stop 17 (FIG. 6) which is adjustable transversely to the transport direction 6.
• the stop 17 By means of the stop 17, the workpieces 1 can be accurately aligned with the tensioning carriage 3, before being tensioned with the collets 14, 15 on the tensioning carriage 3. Basically, it is sufficient if only the upper collets 14 are height adjustable. Then, the lower collets 15 serve as a support for the workpiece 1. It is also possible that the upper and the lower collets 14, 15 are mutually adjustable in opposite directions. The two collets 14, 15 extend on the top and the bottom 18, 19 of the workpiece 1 only so far that they do not interfere with or affect the processing of the workpiece 1 in the processing station 5.
• the stop 17 may also be provided as a separate unit in the device, that is not on the clamping carriage 3. Even then, the workpieces 1 can be clamped exactly on the clamping carriage 3.
• the processing station 5 has a plurality of processing units, in the embodiment a saw 20, a drilling unit 21 and a milling unit 22.
• the saw 20 With the saw 20, the workpiece 1 is first sawed transversely to its longitudinal direction to the required length. It is possible to design the saw 20 or the circular saw blade so that they can be set at an angle, so that the workpiece can be sawn at the end face also at an angle.
• the drilling unit 21 has at least one drill 23, with which the required holes can be mounted in the workpiece.
• the drill 23 can introduce the bores on the right in the direction of transport 6 longitudinal side 24 of the workpiece 1 (FIG.
• the drilling unit 21 is advantageously pivotable about different axes, so that the holes can not only be introduced vertically into the longitudinal side 24, but also at different angles and / or inclined. It is also possible to adjust the drilling unit 21 so that holes can be made with the drill 23 in the upper side 18 of the workpiece 1. These holes can be perpendicular to the workpiece top 18, but also at different angles to her. Since the clamping carriage 3 are each arranged at greater distances from each other, the holes can be provided easily in the area between. Also in the end faces of the workpiece 1 holes can be attached.
• the right longitudinal side 24 of the workpiece 1 is processed.
• the workpiece 1 does not have to be machined over the entire length of the longitudinal side 24. It is possible to make only at certain points of the long side 24 milling, as will be explained with reference to FIGS. 2 to 5 on an embodiment yet.
• the workpieces can be processed 1 to about half the cross section on the entire longitudinal side with high accuracy and quality in the flow.
• each clamping carriage 8 also has collets 25, 26 (Fig. 1 and 6), corresponding to the collets 14, 15 are arranged in pairs one above the other. With the collets 25, 26, the workpiece 1 is clamped to the top 18 and bottom 19. The collets 25, 26 extend from the right longitudinal side 24 in the direction of the left in the direction of transport 6 longitudinal side 27 of the workpiece. 1
• the machined in the processing station 5 workpiece 1 is passed to the clamping carriage 8.
• the clamping carriage 3, 8 are arranged in the transfer area 7 to each other so that the collets 25, 26 of the clamping carriage 8 are opposite to the collets 14, 15 of the clamping carriage 3.
• This has the advantage that the workpiece 1 may initially remain clamped on the tensioning carriage 3 when the collets 25, 26 are applied to the workpiece 1.
• the collets 14, 15 of the clamping carriage 3 are lifted so that the clamping carriage 3 can go back to the starting position to clamp in the region of the cross conveyor 2, the next workpiece 1. With the clamping carriage 8, the workpiece 1 is transported through the processing station 9.
• the drill 29 of the drilling unit 28 holes can be mounted in the workpiece.
• a bore in the left in the transport direction 6 longitudinal side 27 of the workpiece 1 is introduced with the drill 29.
• the drilling unit 28 is advantageously adjustable about different axes, so that the drill 29 can be brought into different positions with respect to the workpiece 1.
• a bore can be introduced.
• this hole not only perpendicular to the transport direction 6, but depending on the setting of the drilling unit 28 in different angles of inclination.
• 37 can be introduced in different directions extending bores, depending on the position of the drill 29th
• corresponding milling work on the workpiece 1 are made, for example, on the longitudinal side 27 or at the end face.
• the cutting unit 31 following the milling unit 30 has a chain saw 32, with which slots in the workpiece 1 can be produced.
• the saw unit 31 or the chain saw 32 can be set in different positions so that slits running on the workpiece 1 in different directions can be attached.
• the chainsaw 32 can also be adjusted so that, for example, at the end face of the workpiece 1, a corresponding slot can be sawn.
• the tensioning carriages 8 After leaving the processing station 9, the tensioning carriages 8 reach the area of the transverse conveyor 10. After loosening the collets 25, 26, the machined workpiece 1 is transferred to the transverse conveyor 10. Then the tensioning carriage 8 drive back into the transfer area, to take over the next, in the meantime in the processing station 5 machined workpiece 1.
• the transfer of the workpiece 1 in the transfer area 7 is advantageously carried out automatically.
• the clamping carriage 3, 8 are independently adjustable in the transport direction 6, the workpiece 1 can be optimally clamped.
• 2 to 5 show an example of a workpiece 1, which has been processed in the two processing stations 5, 9.
• the exemplified workpiece 1 is a Kehlsparren having the longitudinal sides 24 and 27. Near the two ends, a groove 33, 34 is provided in the longitudinal side 24, which has been introduced by the milling unit 22 of the processing station 5. In the area between the grooves 33, 34, which extend over the thickness of the workpiece 1, the longitudinal side 24 is flat.
• the end faces 36, 37 are bevelled and profiled.
• the end face 36 is roof-shaped in cross section, while the end face 37 has a V-shaped recess 38 over its length.
• the profiling of the previously obliquely sawn end faces 36, 37 can be performed with the milling unit 22 or 30.
• the end face 36 can also be processed by two saw cuts in two different pivot positions of the saw.
• the workpiece 1 according to FIGS. 2 to 5 is to be understood only as an example. From the machining of this workpiece results that in the respective processing stations 5, 9 not all processing units must be used. Depending on the processing task, only one or only two or also all three units are used in the processing stations 5, 9.
• the number of processing units in the processing stations 5, 9 is also only exemplary.
• the processing stations may have fewer or more processing units, as shown by way of example in FIG. 1.
• the processing stations 5, 9 may contain different numbers and / or different types of processing units, in addition to the described, for example, a marking unit, with which the workpieces 1 itself or any reference lines for later use of the workpieces can be marked.
• the processing units in the processing stations 5, 9 are advantageously interchangeable, so that it is possible, depending on the processing task, to load the corresponding processing units into the respective processing station 5 and / or 9.
• various tools can be substituted, depending on the type of processing task.
• the necessary tools are available in tool magazines near the respective processing units, from which they can be removed automatically and quickly and loaded into the processing unit.
• the workpieces 1 are processed in two steps from the right and left, with the workpieces are clamped during these operations.
• the workpieces 1 can be processed in the pass on the entire longitudinal side with high accuracy and quality.
• the clamping carriage 3 and 8 can be easily moved next to each other in the transfer area 7, the support and the lower collet 15, 26 of the clamping carriage 3, 8 slightly downwards adjustable. To transfer the pads or the lower collets 15 of those clamping carriage, which do not tension the workpiece, lowered. Likewise, it is also possible to slightly raise the still clamped with the clamping carriage 3 workpiece when entering the transfer area, so that the clamping carriage 3, 8 can be easily moved next to each other.
• the workpieces 1 can first be sawn at both end faces 36, 37. Subsequently, the one longitudinal side of the workpieces is partially or over their entire length machined by milling and / or drilling.
• the device can also be designed mirror-inverted to the X and / or Y axis.
• the workpieces are seen in plan view according to Figure 1 fed from the bottom right, the passage direction through the device is from right to left and the removal advantageous to the top left.
• the feeder In a mirror-inverted arrangement to the Y axis, the feeder would be from top left, the direction of passage from left to right, and the bottom right removal; and finally, in a mirror-inverted arrangement to the X and Y axes, the feeder would be from the bottom left, the pass direction would also be from left to right, and the top right.
• the first tensioning wagons 3 are always opposite the provided guidance and running with the attacks, or in the area of the first clamping carriage is provided with respect to the feed a separate stop for the workpieces.
• only one processing station is provided in the device in which the workpiece can be processed completely and on all sides.
• the transfer of the workpieces can take place in the processing station or in the area before or after this processing station, the removal before or after this processing station.
• the production capacity is significantly limited in such training.

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• Engineering & Computer Science (AREA)
• Life Sciences & Earth Sciences (AREA)
• Mechanical Engineering (AREA)
• Wood Science & Technology (AREA)
• Forests & Forestry (AREA)
• Multi-Process Working Machines And Systems (AREA)
• Chemical And Physical Treatments For Wood And The Like (AREA)
• Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
• Diaphragms For Electromechanical Transducers (AREA)
• Adornments (AREA)
• Veneer Processing And Manufacture Of Plywood (AREA)

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• 2007
  • 2007-08-28 DE DE102007040580A patent/DE102007040580B3/de not_active Expired - Fee Related
• 2008
  • 2008-08-14 SI SI200830258T patent/SI2185331T1/sl unknown
  • 2008-08-14 AT AT08801576T patent/ATE500042T1/de active
  • 2008-08-14 EP EP08801576A patent/EP2185331B1/fr not_active Not-in-force
  • 2008-08-14 DE DE502008002754T patent/DE502008002754D1/de active Active
  • 2008-08-14 WO PCT/EP2008/006677 patent/WO2009030348A1/fr active Application Filing

Non-Patent Citations (1)

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