EP1231037B1 - Method and apparatus for the working of continuously fed workpieces - Google Patents

Description

Technical area

The invention relates to a method according to the preamble of claim 1 and an apparatus according to the preamble of claim 15, for machining continuously moving workpieces, which are preferably plate-shaped, strip-shaped or strip-shaped, in particular for machining workpieces of different sizes from wood, wood-like Materials or plastics.

Such procedures and devices are used in particular for flexible format processing of furniture parts or wood panels of different sizes, which are to be processed at the longitudinal and / or transverse edges. Such a processing can be, for example, a length and transverse processing by milling, up or gluing edges and subsequent post-processing of the edge to produce finished furniture parts, such as a front or door element in the run.

State of the art

Such a method and such a device are known from DE 3 248 497-A known.

There are already known methods and devices for processing continuously moving workpieces, in which the workpieces are manually aligned by the operator and introduced into the devices. In the further course, they are then automatically processed on one page in the pass. After processing the first page, the workpieces are manually removed by the operator or automatically by a return device, transported back to the inlet of the device, rotated and processed in a second pass on a second side. Such Processing of the workpieces is time-consuming and labor-intensive and consequently cost-intensive.

Furthermore, methods and apparatus for processing continuously moving workpieces are known in which two opposite sides are processed simultaneously in one pass. The processing means for the opposed, i.e. usually right and left side of the workpieces must be coupled with each other to adapt to the dimensions or size of the workpieces with variable spacing, so that such double-sided working devices are complex and technically complex. In the case of a conversion to other workpiece dimensions, the devices must be completely emptied, resulting in high changeover times and downtime. There are therefore driven with known procedures of this type usually only medium and large lot sizes.

In addition, in the post-published DE 100 47 385 A a method and an apparatus for the processing of advancing moving workpieces described. According to the DE 100 47 385 A a method and a device is described, wherein the workpieces are aligned and processed on a substantially parallel to the direction of movement extending first side in a continuous and then moved transversely to the direction of movement, aligned and at the opposite, also substantially parallel to the direction of movement extending second Page to be edited in the pass. However, in the method or apparatus according to the DE 100 47 385 A result that the orientation of the second side of the workpieces after moving from the first stop position to the second stop position is not dimensionally correct and angle to the first side, ie, that the already processed first side with respect to the direction of movement of the workpieces 10 different is aligned as the not yet edited second page. As a result, after complete machining, a workpiece is obtained which has a machined first side and a machined second side which are not aligned at an angle to one another.

Presentation of the invention

The invention is based on the technical problem of a method and an apparatus according to the Application DE 100 47 385.7 in such a way that high cycle times in the processing of different sized workpieces can be achieved.

This technical problem is solved by a method having the features of claim 1 and a device having the features of claim 18.

The invention is based on the idea of designing a continuous machining of workpieces in such a way that first processed one side of the workpieces in the flow and the other side of the workpieces are processed to form a reference edge in the flow, the workpieces then moved transversely to the direction of passage and then align the other side with the reference edge and process it to size on the fly. Through the formation of the reference edge and the alignment at the reference edge, which has been processed in parallel to or before or after the first page in the pass, the workpieces are processed so that the machined first side and the machined second side of the workpieces Maß- and are aligned angularly to each other.

In particular, while maintaining the continuous movement after the processing of the first side and the reference edge a customized to the respective dimensions transverse displacement of the workpieces made, which brings the respective opposite second side by the orientation at the reference edge in a position in which then the processing steps for the second side can be performed. This makes it possible to process not only small lot sizes, but even in their dimensions completely different individual pieces in a row in the run without Umstellarbeiten and without additional changeover times, the first page and the second side of the workpieces are dimensionally and angularly processed. Furthermore, workpieces of different sizes can be subjected to both longitudinal processing and transverse processing in any order by this processing method according to the invention.

Due to the reference edge processing device, which forms a reference edge aligned on the second side parallel to the first side of the workpieces, the workpieces after the complete processing on a first and a second side, which are aligned to each other and angle aligned.

The transfer station makes it possible, by means of a movement adapted to the workpiece dimensions, to move workpieces different size in the pass after the workpiece-specific displacement by the Versetzstation and after alignment at the reference edge along second processing means can be processed without a complicated alignment must be made on the second side. This also means that small workpieces are moved by the transfer station from the first layer over a greater distance in the second layer and larger workpieces are moved over a smaller distance from the first layer to the second layer.

The device according to the invention is particularly useful for the processing of substantially opposite edges or sides of plate-shaped workpieces made of wood, wherein a conversion of the device to workpieces of different sizes by adjusting the displacement or displacement of the workpieces by the Versetzstation is not required. Consequently, even with workpieces with small batches or individual pieces there is no downtime of the device.

Further advantageous embodiments will be apparent from the dependent claims. Thus, it is advantageous that the workpieces are aligned in an angle relative to the direction of movement, running stop arrangements and transversely to the direction of movement in a first stop position and processed after reaching the first stop position in the first side and in the region of the second side to a defined excess become. Subsequent to this processing, the workpieces are moved by a transfer station transversely to the direction of movement in a second stop position and aligned at an angle to the reference edge and then processed angle and custom in the range of the second side. Due to the alignment in the second stop at the reference edge with a defined oversize, an angular and true-to-scale feed occurs, whereby the workpieces with a defined Oversize to the reference edge are already prefabricated so dimensionally accurate that the second side of the workpieces in the second stop position after alignment at the reference edge only needs to be processed so that the defined excess is milled with respect to the reference edge. Thus, an angular and Maßgerees workpiece is manufactured with a machined first and a machined second side.

Consequently, the workpieces can be processed, in particular, after a longitudinal processing in a subsequent cross-processing in the following manner. In the pass for longitudinal processing, the workpieces are processed in the first stop position aligned on the first side and to form a reference edge on the second side. Thereafter, the workpieces are moved and aligned at the reference edge and processed in the pass on the second side. Now the workpiece is offset by 90 ° for transverse processing and processed in a second pass through the device according to the invention. Here, the already machined on the long sides workpiece is aligned with the stop assemblies and processed on the first side and on the second side to form the reference edge. Then the workpiece is moved along the stop assemblies and aligned at the reference edge and then processed in the pass on the second side to measure and angle. Thus, the workpieces can be edited both on the long sides and on the transverse sides with angular accuracy and dimensional accuracy with a correspondingly required precision.

Another advantage is that the reference edge on the second side of the workpieces is formed by a reference edge processing device at the same angle as the first side and with a defined oversize transverse to the movement direction of the workpieces, the reference edge processing device transverse to Movement direction of the workpieces for processing the reference edge of the second side is arranged to be movable. Due to the movable arrangement of the reference edge processing device, workpieces of different sizes can be manufactured one behind the other in a straightforward manner using a reference edge.

According to the invention, the reference edge processing device is infinitely movable on a cantilever extending transversely to the direction of movement of the workpieces, which is designed in particular in a portal shape above the transport device, so that the reference edge processing device can be adjusted to workpieces of different sizes.

According to the invention, a first reference edge processing unit on the first longitudinal side of the cantilever and a second reference edge processing unit on the second longitudinal side of the cantilever opposite the first longitudinal side are respectively moved for processing a reference edge of a workpiece on the cantilever of the reference edge processing device. Thus, the first reference edge processing unit can produce the reference edge on a first workpiece, at the same time the second reference edge processing unit is moved to a position in which a reference edge of a subsequent second workpiece is formed. Thus, high cycle times can be achieved in the processing of different sized workpieces.

Moreover, a further advantage is that the reference edge of the second side of the workpieces is joined in the form of a fold by the reference edge processing unit, in particular by a milling unit, whereby a part of the second side of the workpieces is not processed by the reference edge processing unit.

The formation of a fold does not require large-scale machining of the second side to achieve a reference edge, so that the formation of the reference edge can be performed quickly and easily. Further, since a part of the second side is not processed, this page can be used in particular as a support of the workpieces, so that the workpieces can rest completely on a transport device.

Furthermore, it is advantageous if the workpieces are conveyed to the displacement station and are displaced thereon as far as the second stop position in the direction of the second side.

Advantageously, the workpieces that exceed a predetermined width transversely to the direction of movement, moved from the transfer station in the direction of the first side in the second stop position. Thus, workpieces with greater width can be processed on both sides, with the displacement of the workpieces by the Versetzstation depending on the workpiece width takes only a small amount of time.

Furthermore, it is advantageous that workpieces that exceed a predetermined width transversely to the direction of movement, are first moved in the direction of the first side and then in the direction of the second side of the workpieces in the second stop position. As a result, the alignment of the workpieces in the second stopper position can thereby be performed more precisely.

Advantageously, the workpieces are moved simultaneously or after alignment on the first stop assemblies on this transversely to the direction of movement into the first stop position for processing the first side and the reference edge of the workpieces, so that the alignment of the workpieces in the first stop position is possible quickly and accurately ,

Another advantage is that the workpieces are moved synchronously with the throughput speed of the Versetzstation in order to achieve a constant passage of the workpieces without clock loss.

Moreover, it is advantageous if the workpieces are displaced in an adjusting device downstream of the displacement station along the stop arrangements in the second stop position.

According to an advantageous embodiment, the alignment device has a plurality of intake rollers, wherein the workpieces by the acting from above feed rollers, which are aligned substantially in the direction of movement of the workpieces and in the direction of the second stop position, and transverse to the direction of transverse stops on the Reference edge are aligned. Thus, the workpieces are automatically moved by the feed rollers to rest against the transverse stops, in particular until the investment of an infeed ruler, wherein the slip between the feed rollers and the workpieces is dimensioned such that the feed rollers slide over the workpieces after this abut the transverse stops.

Furthermore, it is advantageous if the workpieces are aligned in the first stop position on first stop arrangements and in the second stop position on second stop arrangements in order to allow any pushing of the workpieces by the transfer station. Thus, the two sides of the workpieces can on the one hand be aligned independently of each other and on the other hand, the displacement of the workpieces in the transfer station is not affected by the stop assemblies.

When the workpieces are transported in the direction of movement during processing by a transport device are fixed by a transport device arranged above the upper pressure system for Werkstückeinspannung on the conveyor, the workpieces can be clamped during transport in a suitable manner.

Further, it is advantageous if the workpieces are held clamped during processing in the first stop position of a first transport unit together with a first top pressure unit and in the second stop position of a second transport unit together with a second top pressure unit. Thus, the workpieces can be clamped separately after moving.

It is also advantageous if the workpieces are held clamped during processing in the first stop position of a transport unit together with a first top pressure unit and in the second stop position of the transport unit together with a second top pressure unit. Thereby, the workpieces can be moved on the transport unit from the first stop position to the second stop position, wherein in each case for the processing of the first and second sides of the workpieces a corresponding first and second top pressure unit for clamping during processing is sufficient.

Moreover, it is advantageous if the reference edge processing unit is a milling unit, which forms the reference edge of the second side of the workpieces in the form of a fold, wherein the milling unit with a first part of the second side of the workpieces is engaged and with a second part of the second Side of the workpieces is not engaged. As a result, on the one hand the required processing for the reference edge is minimized and on the other hand, the processing of the reference edge can be performed independently of the width of the workpiece, even if the second side rests on a transport device for processing the reference edge. Due to the non-machined part of the workpiece, which serves as a support, it is not necessary that the transport device is only a narrow band. Thus, wide bearing surfaces of the conveyor may be used, which extend over the entire width of the workpieces and beyond, since the reference edge processing unit mills only the upper part of the second side of the workpiece to form a fold.

According to an advantageous embodiment, the transfer station on a slide assembly to move the workpieces from a first position to a second position for machining the workpieces in a structurally simple manner.

Furthermore, it is advantageous if the displacement station has a belt arrangement, a roller arrangement, a gripper arrangement or a suction arrangement.

According to a further embodiment, the displacement station has a combination of a slider arrangement, belt arrangement, roller arrangement, gripper arrangement and / or suction arrangement. Thus, two or more of the above-mentioned arrangements may be combined with one another to assist in the transport of the workpieces from the first layer to the second layer, which above-mentioned arrangements may be integrated into the transfer station and / or the alignment device.

According to an advantageous embodiment, the slider arrangement has a first slider on the second side of the workpieces facing side and a second slider on the first side of the workpieces facing side, so that a displacement of the workpieces both in one direction and in the other Direction can be carried out substantially transversely to the direction of movement of the workpieces. This has the advantage that the workpiece can be accelerated with high dynamics in a predetermined clamping and in particular can be braked. Thus, a high number of cycles of up to 30 workpieces per minute can be realized.

Advantageously, substantially parallel to the direction of movement, running stop arrangements are mounted for angular alignment of the workpieces on the transport device, wherein the orientation can be made independently of the transport of the workpieces directly to the transport device.

Advantageously, the stop assemblies are each formed from one or more strips, so that the orientation the workpieces can be performed in a structurally simple manner.

According to a further embodiment, the stop arrangements are formed in each case of a over the entire width of the transport device extending driving rail. Thus, the alignment of the workpieces can be performed both in the first and in the second layer on the same stop assemblies or driving rail.

According to a further advantageous embodiment, the stop assemblies are each formed from two or more stop pins or stop pins.

Moreover, it is advantageous if the stop arrangements are arranged retractable on the transport device. As a result, a variety of stop assemblies can be brought into engagement with the workpieces at a respectively desired location, so that, for example, a vertical alignment or an orientation at an angle can be performed at a desired location, as required. Furthermore, the stop arrangements can be lowered in the region of the transfer station in order not to interfere with a displacement of the workpieces. In particular, it is advantageous that the stop arrangements can be controlled due to their retractability such that different workpieces can be processed simultaneously both longitudinally and transversely. This means that a long workpiece for longitudinal processing extends over a plurality of stop arrangements, for example, so that the stop arrangements mounted below the workpiece or not required remain buried. Subsequently, short workpieces can be machined transversely, since the stop arrangements can be adapted by sinking to the size of the individual workpieces. As a result, the device is on workpieces of any size and on a any sequence of longitudinal and transverse machining by sinking the stop assemblies adjustable. Thus, by controlling the retractable stop assemblies for the first time a longitudinal and transverse machining of workpieces of different sizes in the run possible.

According to a further embodiment, the transport device has two continuous, juxtaposed transport chains, so that the transport device can be produced inexpensively. Furthermore, the two transport chains are arranged to each other at a fixed distance. Thus, no elaborately constructed and variable transport device for arbitrary machining of workpieces of different sizes is necessary.

Moreover, it is advantageous if the transport device has transverse to the direction of movement and along the entire width of the transport device extending longitudinal elements for supporting the workpieces, wherein the workpieces both during the processing of the first side and during the processing of the second side on the longitudinal elements are arranged. Thus, a uniform transport device can be used for the entire transport of the workpieces, so that the shifting from the first stop position to the second stop position can also be carried out on the longitudinal elements of the transport device.

If at least a part of the longitudinal elements are designed liftable, thereby forming the follower stop arrangements, depending on the workpiece size, the corresponding longitudinal element can be raised to serve as a stop assembly. Thus, the workpieces can be transported in close succession with only a small distance on the conveyor, even if the size of the workpieces is different, so that the cycle time is optimized.

Preferably, an alignment device for aligning the workpieces is arranged in the second position in the direction of movement of the workpieces after the transfer station.

Furthermore, it is advantageous if substantially parallel to the direction of movement extending transverse stops for aligning the workpieces are provided in order to ensure angular and dimensionally accurate alignment of the workpieces for processing the parallel to the direction of movement extending first and second sides of the workpieces.

According to a preferred embodiment, the transverse stops are each formed from one or more strips.

According to a further embodiment, the transverse stops are each formed from two or more rollers, so that the workpieces can be aligned or moved past the rollers with low friction.

According to a further advantageous embodiment, the transverse stops are preferably formed from two or more stop pins or stop pins.

Moreover, it is advantageous if the alignment station has a plurality of feed rollers, which are aligned substantially in the direction of movement of the workpieces and in the direction of the second stop position and cooperate with the transverse stops. As a result, the workpieces are automatically brought into the second stop position for processing the second side, wherein the reference edge is used to align the workpieces on the transverse stops.

Furthermore, it is advantageous that above the transport device, a top pressure system for clamping the workpieces is arranged to provide for a suitable clamping of the workpieces during transport along the processing facilities on the transport device.

According to a preferred embodiment, a first top pressure unit is arranged parallel to the transport device in the region of the first processing devices, and a second top pressure unit is arranged parallel to the transport device in the region of the second processing devices. Thus, the workpieces for machining the first side and for processing the second side can be clamped separately, so that a displacement of the workpieces between the processing of the first and the second side without restrictions is possible.

Brief description of the drawings

Fig. 1

eine schematische Gesamtansicht der erfindungsgemäßen Vorrichtung;

Fig. 2

eine teilweise in Querschnitt dargestellte Ansicht der Werkstückeinspannung der erfindungsgemäßen Vorrichtung;

Fig. 3

eine schematische Draufsicht des Teils der erfindungsgemäßen Vorrichtung, in welchem die Werkstücke eingeführt und an einer ersten Seite bearbeitet werden;

Fig. 4

eine schematische Draufsicht des Teils der erfindungsgemäßen Vorrichtung, in welchem die Werkstücke durch die Versetzstation versetzt werden; und

Fig. 5

eine schematische Draufsicht des Teils der erfindungsgemäßen Vorrichtung, in welchem die Werkstücke an einer zweiten Seite bearbeitet werden und die Vorrichtung verlassen.

In the following, an embodiment of the invention will be described and explained in more detail with reference to the accompanying drawings for further explanation and for better understanding. Show it:

Fig. 1

a schematic overall view of the device according to the invention;

Fig. 2

a partially cross-sectional view of the Werkstückeinspannung the inventive device;

Fig. 3

a schematic plan view of the part of the device according to the invention, in which the workpieces are introduced and processed on a first side;

Fig. 4

a schematic plan view of the part of the device according to the invention, in which the workpieces are offset by the Versetzstation; and

Fig. 5

a schematic plan view of the part of the device according to the invention, in which the workpieces are processed on a second side and leave the device.

Description of a preferred embodiment of the invention

In the following description and in the figures, the same components and components are also identified by the same reference numerals to avoid repetition, unless further differentiation is required.

In Fig. 1 an example of a device according to the invention for processing continuously moving workpieces 10 is shown, which are preferably plate-shaped and made of wood. The direction of movement of the workpieces is shown by the arrow at the inlet 20. The inlet is formed from a roller conveyor 21. The workpieces 10 are aligned at an angle to the direction of movement, follower stop assembly 30 and transversely to the direction of movement at an angle in a first stop position. Then, the workpieces 10 in the region of the first page 11, for example, by milling, sawing or the like are processed continuously in the format and preferably the edge is then provided in the pass with an edge band. Likewise, in the first stop position, the second side 12 is processed while forming a reference edge 212 by means of a reference edge processing device 110 in the pass.

The reference edge processing device 110 has a cantilever 115 extending transversely to the movement direction of the workpieces 10, on which a first and second reference edge processing unit 111, 112 is arranged to be infinitely movable. The first reference edge processing unit 111 is disposed on the first side of the cantilever 115, and a second reference edge processing unit 112 is disposed on the second longitudinal axis of the cantilever 115 opposite the first longitudinal side such that the first reference edge processing unit 111 can be steplessly moved independently of the second reference edge processing unit 112.

Subsequent to the machining of the first side 11 and the reference edge 212 on the second side 12 of the workpieces 10, they are displaced by a displacement station 40 transversely to the direction of movement into a second stop position and aligned at an angle to the reference edge 212. After reaching the second stop position, the workpieces 10 are processed in the region of the second side 12 in a similar manner as the first page 11 in the flow. Subsequent to the machining of the second side 12, the workpieces 10, which are now machined on two sides, become an in Fig. 1 not shown outlet 90 supplied. Thus, the workpieces 10 have been processed on the fly on two sides 11, 12 angle and dimensionally appropriate, while maintaining the continuous movement after processing the first page 11 a tailor-made to the respective dimensions transverse displacement of the workpieces 10 is made so that workpieces 10th different size in any order both a longitudinal processing and a transverse processing can be subjected.

The workpieces 10 are thereby transported according to the arrow direction by a transport device 51, 52 from the inlet 20 to the outlet 90. The transport device 51, 52 is constructed from a first transport unit 51 and a second transport unit 52, the first transport unit 51 being provided for clamping and transporting the workpieces 10 during processing of the first side 11 along first processing arrangements 70. The first processing arrangements 70 may be formed from a series of processing devices arranged one behind the other in the direction of passage, such as a milling device for size processing and an edge banding device arranged downstream in the direction of movement or passage with a corresponding post-processing.

The second transport unit 52 may also be provided for particularly long or wide workpieces 10 for supporting and transporting the workpieces 10 during processing along the first processing arrangements 70. The clamping of the workpieces 10 during machining along the first processing assemblies 70 via an upper printing system 61, 62, wherein a first top pressure unit 61 presses the workpiece 10 for clamping on the first transport unit 51 down.

After machining the first side 11 of the workpieces 10, they are no longer clamped by the first top pressure unit 61 in order to be transversely displaced in the region of the displacement station 40. In this case, the workpieces 10 can be transported both by the first transport unit 51 and by the second transport unit 52, which run parallel to each other over their entire length in a fixed predetermined distance, which is preferably about 1,200 mm. The transport units 51, 52 are each formed of continuous transport chains 53, 54 in the form of a chain track, which in turn consist of individual chain plates. After the transverse displacement of the workpieces 10 by the displacement station 40, the workpieces 10 are clamped for processing the second side 12 between the second transport unit 52 and a second top pressure system 62, so that the second side 12 of the workpieces 10 along the second processing assemblies 80 can be processed ,

The first top pressure unit 61 extends along the first half of the device according to the invention, which faces the inlet 20, and the second top pressure unit 62 extends along the second half of the device according to the invention, which faces the casserole 90.

In Fig. 2 now the clamping of the workpieces 10 is more apparent. The workpiece 10 is between the Top pressure system 61, 62 and the transport device 51, 52 clamped, wherein for processing the second side 12 of the workpiece 10 this protrudes in a suitable manner over the region of the clamping of the workpiece 10.

At the second side 12 opposite the first side 11, the workpiece 10 protrudes beyond the region of the clamping depending on the different size or length of the workpiece 10 transversely to the direction of movement, which in Fig. 2 opposite to the line of sight. The clamping of the workpieces 10 is carried out from below by a second transport unit 52 forming transport chain 54. From above, the workpiece 10 is pressed by the second top unit 62 of the top pressure 61.62 so on the conveyor chain 54 that the second side 12 of the workpiece 10 of the second processing assemblies 80 can be processed with sufficient precision. In this case, the workpiece 10 is held by an upper belt 64, which is made in particular of an elastic material, via two rollers 65, 66 cooperating with the profile of the upper belt 64. For clamping the workpieces 10, a plurality of such rollers 65, 66 are mounted in the direction of movement via corresponding roller holders 67 such that the upper belt 64 is pressed down onto the workpiece 10. Thereby, a relative movement of the workpiece 10 is avoided both between the upper belt 64 and between the conveyor chain 54 to perform the workpieces 10 in the second stop position exactly to the second processing means 80 for processing in the flow along.

According to the FIGS. 3 to 5 Now, the inventive method and the device according to the invention will be explained in more detail. Fig. 3 This represents the first part of the device according to the invention, in which the workpieces are fed via the inlet 20 of the device according to the invention and then processed thereon on the first side 11 of the workpieces 10. To the in Fig. 3 shown first part of the device according to the invention closes in the arrow direction of in Fig. 4 shown part of the device according to the invention, in which the workpieces 10 are offset by the displacement station 40. At the in Fig. 4 shown part of the device according to the invention in turn closes in the arrow direction of in Fig. 5 shown part of the erfindungemäßen device in which the workpieces 10 are processed on the second side 12 and leave the outlet 90 of the device according to the invention.

How out Fig. 3 it can be seen, the workpieces 10 are supplied via the existing of individual rollers 21 inlet 20 of the device according to the invention for longitudinal processing. In this case, the workpieces 10 are aligned along a transverse stop 35 forming inlet guide 35 and aligned at the same time or subsequently to a driving rail 30 and stop assembly 30. The stop arrangement 30 is formed in particular in a over the entire width of the transport device 51, 52 extending driving rail 30, wherein a plurality of driving rails 30 along the transport means 51, 52 are arranged. In particular, the two transport chains 53, 54 carry at a distance of 500 mm over the entire length of a driving rail, each extending parallel to each other. Since the abutment arrangements 30 are arranged to be retractable on the transport device 51, 52, workpieces 10 of different sizes can be transported one behind the other so that the abutment arrangements 30 protrude above the transport chains 53, 54 as required. More specifically, the driving rails 30 may be retracted or extended so that it is possible for the workpieces to be aligned with a driving rail or otherwise extend over a retracted driving rail when the workpiece, by virtue of its size, extends above one thereon following carrier rail is arranged. The driving rails can be as needed or depending on the size of the workpieces 10 are controlled such that they protrude in the vertical direction via the transport device 51, 52 or sunk below the transport device 51, 52. The driving rails are in particular in the transport chains 53, 54 retractable and highly controllable.

For clamping the workpieces 10, these are, as already described above, printed by an upper-pressure system 61, 62 on the transport device 51, 52, a first top-pressure system 61 being arranged above the first transport unit 61. After clamping the workpieces 10, the first side 11 is processed along the first processing means 70. The first processing devices 70 may comprise a milling device or the like and subsequently an edge banding device. Likewise, in the first stop position, the second side 12 is processed while forming the reference edge 212 by means of the reference edge processing device 110 in the pass. The reference edge processing units 111, 112 are in particular designed as jointing cutters which can form or join the reference edge 212 of the second side 12 of the workpieces 10 in the form of a fold.

The operation of the reference edge processing device 110 with only one mating cutter 111 will be described below. The joining cutter is displaced transversely to the movement direction of the workpieces 10 on the extension arm 115 in such a manner that the joining cutter 111 is brought into the corresponding position in order to produce the desired reference edge 212 with a defined excess on the second side 12 of the workpieces 10 in that the Workpieces 10 are passed in passing to the joint cutter 111 over. To form a reference edge 212 in the form of a fold, the jointing cutter 111 is arranged in the horizontal direction such that only part of the second side 12 of the workpieces 10 is milled off from above by the jointing cutter 111, wherein Milling the milling cutter to 6 mm above ground level. The thus formed narrow edge now serves as a reference edge 212, which is aligned at an angle parallel to the machined first side of the workpieces 10 and is already prefabricated with a defined excess of, for example, 2 mm so that the second side 12 of the workpieces 10 in the second stop position after being aligned at the reference edge 212 is merely processed so that the defined excess with respect to the reference edge 212 is milled. Thus, an angular and dimensionally accurate workpiece 10 is manufactured with a machined first and a machined second side, which have been processed in a continuous process.

Since, in the formation of the reference edge 212 in the form of a fold, only the upper part of the workpiece 10 is machined by the top milling unit 111, 112, the lower part of the workpiece 10 does not become the second side 12 for forming the reference edge 212 processed. Thus, it is possible that the reference edge 212 can be formed in a variety of workpiece formats, even if the workpiece rests completely on the transport device, since the joint cutter 111 does not come into collision with the transport device.

As in particular in Fig. 1 and 3 1, the reference edge processing device 110 may have two joining cutters 111, 112, each on one longitudinal side of the cantilever 115. Thus, it is possible for the first joining cutter 111 to produce the reference edge 212 of a first workpiece and for the second joining cutter 112 to produce the reference edge 212 of a second workpiece. It is particularly advantageous that the second joining cutter 112 is then moved to the appropriate position for processing the reference edge 212 of the second workpiece on the boom when the first joining cutter 111 is engaged with the first workpiece. Thus, no changeover times arise in the case of different workpiece formats, since the second jointing cutter 112 is already in the suitable position Position on the boom is to manufacture the reference edge 212 of the subsequent workpiece.

After the machining of the first side 11 of the workpieces 10, the workpiece clamping is released by the top pressure unit 61. Subsequently, the workpieces 10 of the transfer station 40 are supplied, the in Fig. 4 is explained in more detail. In the Fig. 4 shown offset station 40 may include a first slider assembly 42 and a second slider assembly 41 for moving the workpieces 10 transversely to the direction of movement shown by the arrow. The workpieces 10, which do not protrude beyond the second transport device 52, are displaced by the second slide arrangement 41 out of the first stop position along the carrier rails 30 into the second stop position for processing the second side 12. The second slider assembly 41 can be moved along with the workpieces 10 in the direction of movement and on the other hand are moved transversely to the direction of movement to move the workpieces 10 positively transversely to the direction of movement. In particular, the workpieces 10 can be exactly aligned by an alignment device 49 in the second stop position and adjusted to the correct length measure before the workpiece 10 is processed by the second processing assemblies 80.

However, if the workpieces 10 protrude beyond the second transport unit 52, they are first displaced transversely to the direction of movement by the first slider arrangement 42 in such a way that the second side 12 of the workpieces 10 no longer projects beyond the second transport unit 52. Subsequently, as described above, the workpiece 10 is displaced in the opposite direction from the second slider arrangement 41 into the second stop position and subsequently aligned by the alignment device 49. The slider assemblies 41, 42 may have a positioning stop as a portal superstructure. The second stop position may be formed by another transverse stop, not shown.

Alternatively, the workpieces 10 may be offset in the translation station 40 transverse to the direction of travel such that both the first slider assembly 42 and the second slider assembly 41 are simultaneously engaged with the workpieces 10 during translation. As a result, the workpieces 10 can be accelerated and braked with high dynamics between the first and second slider arrangements 41, 42 without the workpiece 10 abutting hard or unrestrained on a transverse stop or being displaced beyond the transport means 51, 52 by the transverse displacement. Thus, a high number of cycles or a high throughput speed of the workpieces 10 can be realized.

The transfer station 40 is synchronized to the passage speed of the transport device 51, 52, so that there is a constant feed of the workpieces 10 in the direction of movement. Further, the transfer station 40 has an integrated transport system through which the workpieces are stored in the displacement and alignment. The transport system 45 may be formed of a plurality of rollers or rollers or the like.

By moving the workpieces 10 by means of the displacement station 40, the workpiece 10 is brought into the second stop position in the region of a transverse stop, in particular in the region of an inlet guide 121. To ensure that the workpieces 10 with the reference edge 212 abut directly against the inlet guide 121 , 121 feed rollers 120 are arranged above the workpieces 10 in the region of the inlet ruler, which are aligned substantially in the direction of movement of the workpieces 10 and in the direction of the second stop position. Due to this orientation of the feed rollers, the workpieces 10 are formed on the reference edge 212 formed on the second side 12 brought directly into contact with the inlet ruler 121, wherein the slip of the feed rollers 120 is dimensioned to the workpieces 10 such that the feed rollers 120 slide over the workpieces 10 when the reference edge 212 of the workpieces 10 already applied to the inlet ruler 121.

After the workpieces 10 have been brought into the second stop position aligned by the transfer station 40 at the reference edge 212, the second side 12 of the workpieces 10 along the second processing assemblies 80 is processed. In this case, the workpiece 10 with the second side 12 bears against the inlet ruler 121, so that the defined excess of the workpiece 10 is machined or milled by the second processing arrangement 80 to the desired dimension. Due to the defined oversize of, for example, 2 mm, the workpiece 10 only has to be brought into abutment with the infeed ruler 121 in order to be able to produce it angularly and accurately by the second processing arrangements 80. Aligning to a certain level is eliminated since the corresponding size of the workpiece 10 is already predetermined by the reference edge 212 plus the oversize by the reference edge 212 with the defined oversize. If the reference edge 212 is formed in the form of a fold, both the fold and the reference edge 212 are machined or milled with the defined oversize by the second processing arrangements 80.

As already described above, the workpieces 10 for processing the second side 12 are pressed by a second top pressure unit 62 onto the conveyor chain 42 in order to ensure a suitable workpiece clamping. After machining the second side 12 of the workpieces 10, the Werkstückeinspannung is released and the now machined on both sides 11, 12 workpieces 10 leave the device of the invention via a constructed from a roller conveyor outlet 90. In particular at the end of Transport device 51, 52 may be located an output shaft, as shown by the dashed line.

Thus, by the inventive device workpieces 10 with different length or size without clock loss in any order to measure and angle can be edited. This is possible due to the individually adapted to the individual workpiece size transverse displacement of the workpieces 10 by the Versetzstation 40, so that as shown in the figures, individual workpieces with different sizes in the flow can be edited without clock loss with 1 piece. In addition, it is possible that the workpieces can be processed in any order both longitudinally and transversely, since the driving rails 30 are highly controllable or retractable as needed. In summary, it should be mentioned that by the device according to the invention in particular plate-shaped workpieces 10 by a two-pass through the device according to the invention angle and dimensionally can be edited on the edges, for example, to a finished door element with umgeleimten edges.

According to an embodiment, not shown, the transport device transverse to the direction of movement and over the entire width of the transport device extending longitudinal elements to rest for the workpieces 10, wherein the longitudinal elements extend over the entire width of the transport device such that they on the transport chain 53 as are also stored on the conveyor chain 54. Due to the wide configuration of the transport device formed by the longitudinal elements, the workpieces 10 can be arranged on the longitudinal elements both during the processing of the first side 11 and during the processing of the second side 12, wherein the workpieces 10 by the transfer station 40 on the longitudinal elements of the transport device can be moved. These longitudinal elements can in turn be raised, so that thereby give the follower stop assemblies 30, which can be controlled with respect to the respective workpiece size.

The length dimension of the workpieces is usually in about 250 to 2400 mm, with workpieces having a length less than 1200 mm according to Fig. 4 be shifted from right to left. However, if the workpieces are greater than 1200 mm, they are moved from left to right and then again left to the second stop position. This arrangement is particularly useful in that the displacement times are kept as low as possible and the width of the device according to the invention is minimized.

Claims (29)

1. Process for machining continuously moving workpieces (10), wherein the workpieces (10) are aligned and machined continuously on a first side (11) running essentially parallel to the movement direction and are machined continuously on a second side opposite the first side (11) and running essentially likewise parallel to the movement direction with formation of a reference edge (212), characterised in that the workpieces (10) are then displaced continuously transversely to the movement direction, aligned on the reference edge (212) of the second side (12) and machined continuously to dimension on the second side (12), wherein the reference edge (212) is formed on the second side (12) of the workpieces (10) by a reference edge machining device (110) at the same angle as the first side (11) and with a defined excess transversely to the movement direction of the workpieces (10), wherein the reference edge machining device (110) is arranged to be movable transversely to the movement direction of the workpieces (10) to machine the reference edge (212) of the second side (12) and the reference edge machining device (110) is moved to be infinitely movable on an arm (115) running transversely to the movement direction of the workpieces (10) and on the arm (115) of the reference edge machining device (110), a first reference edge machining unit (111) on the first longitudinal side of the arm and a second reference edge machining unit (112) on the second longitudinal side of the arm opposite the first longitudinal side is moved in each case to machine a reference edge (212) of a workpiece (10).
2. Process according to claim 1, characterised in that

   - the workpieces (10) are aligned according to angle on following stop arrangements (30) running essentially transversely to the movement direction and transversely to the movement direction into a first stop position

   - and after reaching the first stop position, are machined in the region of the first side (11) and machined to a defined excess in the region of the second side (12) on the reference edge (212),

   wherein the workpieces (10) following this machining

   - are displaced by a displacement station (40) transversely to the movement direction to a second stop position and aligned at an angle on the reference edge (212) and

   - after reaching the second stop position, are machined according to angle and dimension in the region of the second side (12).
3. Process according to claim 1, characterised in that the reference edge (212) of the second side (12) of the workpieces (10) in the form of a rebate is joined by the reference edge machining unit (111, 112), in particular by a milling unit, wherein a part of the second side (12) of the workpieces (10) is not machined by the reference edge machining unit (111, 112).
4. Process according to claim 2, characterised in that the workpieces (10) are conveyed onto the displacement station (40) and displaced on the latter in the direction of the second side (12) as far as the second stop position.
5. Process according to claim 2, characterised in that workpieces (10) which exceed a preset width transversely to the movement direction, are displaced into the second stop position by the displacement station (40) in the direction of the first side (11) of the workpieces (10).
6. Process according to claim 2, characterised in that workpieces (10) which exceed a preset width transversely to the movement direction, are displaced into the second stop position initially in the direction of the first side (11) and following that in the direction of the second side (12) of the workpieces (10).
7. Process according to one of claims 2 and 4 to 6, characterised in that the workpieces (10) are displaced simultaneously or after the alignment at the stop arrangements (30) transversely to the movement direction on the latter as far as the first stop position to machine the first side (11) and to machine the reference edge (212) of the second side (12) of the workpieces (10).
8. Process according to one of claims 2 and 4 to 7, characterised in that the workpieces (10) are displaced at the passage speed synchronised by the displacement station (40).
9. Process according to one of claims 2 and 4 to 8, characterised in that the workpieces (10) are displaced in an alignment device (49) downstream of the displacement station (40) along the stop arrangements (30) into the second stop position.
10. Process according to claim 9, characterised in that the alignment device (49) has a plurality of feed rollers (120), wherein the workpieces (10) are aligned by the feed rollers (120) acting from above and which are aligned essentially in the direction of the movement direction of the workpieces (10) and in the direction of the second stop position, and at the reference edge (212) by transverse stops (35, 121) running transversely to the movement direction.
11. Process according to one of claims 2 and 4 to 10, characterised in that the workpieces (10) in the first stop position are aligned at first stop arrangements (30) and in the second stop position at second stop arrangements (30).
12. Process according to one of claims 1 to 11, characterised in that the workpieces (10) are transported during machining by a transport device (51, 52) in movement direction and are fixed on the transport device (51, 52) for workpiece clamping by a top-pressure system (61, 62) arranged above the transport device (51, 52).
13. Process according to claim 12, characterised in that the workpieces (10) are mounted to be clamped during machining in the first stop position by a first transport unit (51) together with a first top-pressure unit (61) and in the second stop position by a second transport unit (52) together with a second top-pressure unit (62).
14. Process according to claim 12, characterised in that the workpieces (10) are mounted to be clamped during machining in the first stop position by a transport unit together with a first top-pressure unit (61) and in the second stop position by the transport unit together with a second top-pressure unit (62).
15. Device for machining continuously moving workpieces (10) having a transport device (51, 52) for the transport of workpieces (10) along first machining devices (70) to machine a first side (11) of the workpieces (10) running essentially parallel to the movement direction and along second machining devices (80) to machine a second side (12) of the workpieces (10) opposite the first side (11), running likewise essentially parallel to the movement direction, characterised in that a reference edge machining device (110) is provided to form a reference edge (212) on the second side (12) of the workpieces (10) in movement direction of the workpieces (10) in front of a displacement station (40), wherein the displacement station (40) is provided between the first and second machining devices (70, 80), and may displace the workpieces (10) essentially transversely to the movement direction from a first position to machine the first side (11) of the workpieces (10) to a second position to machine the second side (12) of the workpieces (10), wherein the reference edge machining device (110) has an arm (115) running transversely to the movement direction of the workpieces (10), on which arm (115) two reference edge machining units (111, 112) are arranged to be infinitely movable and on the arm of the reference edge machining device (110), a first reference edge machining unit (111) is arranged to be infinitely movable on the first longitudinal side of the arm (115) and a second reference edge machining unit (112) on the second longitudinal side of the arm (115) opposite the first longitudinal side.
16. Device according to claim 15, characterised in that each reference edge machining unit (111, 112) is a milling unit which forms the reference edge (212) of the second side (12) of the workpieces (10) in the form of a rebate, wherein the milling unit engages with a first part of the second side (12) of the workpieces (10) and does not engage with a second part of the second side (12) of the workpieces (10).
17. Device according to one of claims 15 or 16, characterised in that the displacement station (40) has a slide arrangement (41, 42).
18. Device according to claim 17, characterised in that the slide arrangement (41, 42) has a first slide (42) on the side facing the second side (12) of the workpieces and a second slide (41) on the side facing the first side (11) of the workpieces (10).
19. Device according to one or more of claims 15 to 18, characterised in that following stop arrangements (30) running essentially transversely to the movement direction are attached to the transport device (51, 52) for alignment of the workpieces (10) according to angle.
20. Device according to claim 19, characterised in that the stop arrangements (30) are formed from in each case one or more strips (30).
21. Device according to one of claims 19 or 20, characterised in that the stop arrangements (30) are arranged so they can be lowered on the transport device (51,52).
22. Device according to one of claims 15 to 21, characterised in that the transport device (51, 52) has two continuous transport chains (53, 54) arranged next to one another.
23. Device according to one or more of claims 15 to 22, characterised in that the transport device has longitudinal elements running transversely to the movement direction and over the entire width of the transport device as a support for the workpieces (10), wherein the workpieces (10) are arranged on the longitudinal elements both during machining of the first side (11) and during machining of the second side (12).
24. Device according to claim 23, characterised in that at least some of the longitudinal elements are designed so they can be raised to thus form the following stop arrangements (30).
25. Device according to one of claims 15 to 24, characterised in that an alignment device (49) for aligning the workpieces (10) into the second position is arranged in movement direction of the workpieces (10) after the displacement station (40).
26. Device according to one or more of claims 15 to 25, characterised in that transverse stops (35) running essentially parallel to the movement direction are provided to align the workpieces (10).
27. Device according to one of claims 25 or 26, characterised in that the alignment device (49) has a plurality of feed rollers (120) which are aligned essentially in the direction of the movement direction of the workpieces (10) and in the direction of the second stop position and cooperate with the transverse stops (35,121).
28. Device according to one of claims 15 to 27, characterised in that a top-pressure system (61, 62) to clamp the workpieces (10) is arranged above the transport device (51, 52).
29. Device according to claim 28, characterised in that a first top-pressure unit (61) is arranged parallel to the transport device (51, 52) in the region of the first machining devices (70) and a second top-pressure unit (62) is arranged parallel to the transport device (51, 52) in the region of the second machining devices (80).

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