EP2481540B1 - Device for sawing at least two plate or plate stack shaped workpieces - Google Patents

Description

The present invention relates to a device for sawing at least two plate- or plate-stacked workpieces, the device at least two independently movable feed devices for moving at least one workpiece in a main transport direction and at least one sawing device for sawing the workpieces along a sawing line transverse, in particular orthogonal , to the main transport direction and, as seen in the main transport direction, on the side of the saw line opposite the feed devices, a transport arrangement with a plurality of conveyors each having at least one contact surface for contacting one of the sawed workpieces and for spacing the sawed workpieces in at least one direction transverse to the main transport direction wherein the workpieces when moving and sawing and when spaced apart on a workpiece support side of a Werkstückauflageeb ene the institution can be arranged. Furthermore, the invention also relates to a corresponding method for sawing at least two plate or plate stack-shaped workpieces. Such a method according to the preamble of claim 15 and such a device according to the preamble of claim 1 is made AT 389 074 known.

In the so-called Buntaufteilen of plate or plate stack-shaped workpieces raw formats are first sawed into strips, so smaller workpieces, and subsequently at least some of these strips in final formats. The individual sawing operations are carried out sequentially and pushed the finished sawed end formats in accordance with the feed movements of the feed devices on a subsequent to the saw line support table.

The sawing of said workpieces can be carried out by successively arranged longitudinal and Queresägevorrichtungen, but also with a single sawing device, if the strip-shaped sawed-off workpieces by 90 ° rotates and feeds the sawing device a second time to then saw down the final formats.

In order to work as efficiently as possible, the workpieces or strips to be sawn together are displaced by the respective feed devices by different feed values. A typical cutting plan will be exemplified below. This has the consequence that the sawn workpieces or final formats blanks, seen in the main transport direction, are moved behind the saw line in the main transport direction relative to each other. It can happen that the final formats or sawed workpieces get caught and twisted. If the workpieces are not just individual plates but plate-stacked workpieces, then the finished sawed workpiece stacks or end format stacks can slip or tip over. This can lead to the damage of said parts and to the stoppage of the device.

This problem is known per se and has already been described several times in the prior art. There are already various approaches, which ultimately always based on the saw line to provide an arrangement of several transporters in the form of roles, the roller-shaped conveyors are arranged at an acute angle to the main transport direction, so that the sawed workpieces or end formats in the direction transverse Slowly diverge towards the main transport direction as they are transported in the main transport direction. Corresponding approaches are in the AT 389 074 B of the EP 0 654 332 A1 , of the EP 0 681 894 A1 and the DE 199 34 295 A1 shown.

All these known approaches, however, ultimately, seen in the main transport direction, only a good way behind the saw line. A disadvantage of these solutions is that they do not act directly behind the saw line, but the sawed workpieces or end formats must be moved only a piece in the direction of the main transport before they have been spaced from each other by the transporters in the direction transverse to the main transport direction.

The object of the invention is to propose an improvement here.

This is achieved in a generic device by extending at least the contact surface of a respective transporter of at least one drive of the transport assembly from the workpiece support level on the workpiece support side and then spaced from each other for spacing the sawed workpieces along a transverse transport path in at least one of the directions, preferably orthogonal Main transport direction movable and at the end of the transverse transport path at least up to the workpiece support plane, preferably across the workpiece support level away, retractable.

A method according to the invention in turn provides that at least the contact surface of a respective transporter of at least one drive of the transport assembly from the workpiece support level extended to the workpiece support side and then moved to each other spacing the workpieces along a transverse transport path in at least one of the directions transversely, preferably orthogonally, to the main transport direction and retracted at the end of the transverse transport path at least up to the workpiece support plane, preferably over the workpiece support plane away.

In other words, it is a core idea of the invention that for spacing the sawed workpieces in the area, seen in the main transport direction behind the saw line, the conveyors are first extended so far that they reach at least with their contact surface on the workpiece support side. After having made contact with the respective workpiece on the workpiece support side, the conveyors transport this workpiece transversely, preferably orthogonally, to the main transport direction along a transverse transport path, thereby spacing the sawed workpieces apart. At the end of the transverse transport path, the conveyors are again retracted so far that their contact surfaces are retracted back into the workpiece support plane or on the workpiece support side opposite side of the workpiece support plane and thus no longer touch the sawed workpiece. With appropriate Design of the drive of the transport arrangement can be provided that is raised when extending the contact surfaces of the conveyors on the workpiece support plane on the workpiece support plane, sawed workpiece. For lifting but can also alternative means, such. B. a per se known air cushion or the like may be provided. The central task of the conveyors is thus the displacement of the sawn workpiece along the transverse transport path in the direction transverse or orthogonal to the main transport direction. An optional task of the conveyors is to raise the sawed workpiece and lower it again, which, as I said, by alternative means such. B. correspondingly controllable air cushion, can be done.

By means of the invention, it is possible for the conveyors to be able to space apart the sawed workpieces in the direction transverse to the main transporting direction immediately behind the sawing line, so that the above-mentioned problems of the prior art are eliminated.

For the sake of completeness, it is pointed out that the term "transverse" is understood to mean, first of all, all angles that deviate from the parallels, ie, from 0 ° or 180 ° and their multiples. Embodiments of the invention in which the transverse transport for spacing the sawed workpieces in directions orthogonal to the main transport direction are particularly preferred.

With regard to the feed devices which can be moved independently of one another, it should be pointed out that these are generally intended to move the workpieces in the direction parallel to the main transport direction or in a common main transport direction. Due to their independent mobility, however, it is possible that the feed rates and feed paths of the independently movable feed devices are different.

The workpiece support plane is basically the plane predetermined by the device, onto which the workpieces are placed and on which they are transported or displaced. It is usually one correspondingly flat surface of a machine table, but the machine table can be made very different and partially different. The machine table or sections thereof can be plates, roller conveyors and plates with outlet openings for the formation of air cushions, to name but a few examples of the known in the prior art embodiments of machine tables.

The workpiece support side is that side of the workpiece support plane on which the workpieces are located when they are placed on the workpiece support plane for sawing. Usually the workpiece support plane is horizontal and the workpiece support side is then the area vertically above the workpiece support plane. But this does not necessarily have to be the case. The conveyors can be retracted or moved back to a rest position so far that their contact surface is in the workpiece support level or retracted even further. In the latter case, then the contact surfaces in the said rest position are on the workpiece support side opposite side of the workpiece support plane.

For the spacing of the sawed workpieces in the direction transverse or orthogonal to the main transport direction can be provided that only one of the sawed workpieces is offset by the transverse transport. However, other embodiments provide that the contact surfaces of a first group of transporters for spacing the workpieces in a first direction transversely to the main transport direction and the contact surfaces of at least a second group of transporters in another, preferably opposite to the first direction, direction transversely to the main transport direction movable are. In principle, it is conceivable that each transporter is driven by its own drive or by several own drives. However, it is usually more cost-effective if at least one common drive is assigned to several transporters. So z. B. be provided that the transporters of a group mentioned above is assigned at least one common drive. A preferred embodiment provides that the common drive for multiple transporters a movable in at least two, preferably mutually orthogonal directions rack has.

The transporters can be configured very differently in the sense of the invention. For example, it is conceivable that a respective transporter as an extendable and retractable z. B. telescopic punch is formed, which is additionally movable along the transverse transport path. The contact surfaces of these transporters are then preferably formed by appropriately extendable surfaces of the stamp. An alternative embodiment of the invention provides that the transporters are each formed as a rotatable about a rotation axis cams. The contact surface of the conveyor may then be formed by the surface of the cam farthest from the axis of rotation.

In principle, the cams should be rotatable about their axis of rotation at least so far that the contact surface of the respective cam can execute the extension, the movement along the transverse transport path and the retraction provided at the end of the transverse transport path. Preferred embodiments provide, however, that the cams of their drive or their drives in each case to, preferably at least, can be rotated 360 °. Furthermore, it is advantageous if the cams are each rotatable in opposite directions of rotation about their respective axes of rotation. In terms of a common drive for a plurality of cams, preferred embodiments provide that a plurality of cams, preferably spaced from each other, are arranged on a common shaft and are preferably driven together by means of the common shaft. If the sawed workpieces are to be spaced apart in the direction orthogonal to the main transport direction, it is advantageously provided that the respective axis of rotation of a respective cam, preferably the optional common shaft, is arranged in a plan view of the workpiece support plane parallel to the main transport direction. If, in the respective application, a transport is also inclined at an angle other than 90 ° transversely to the main transport direction, it can also be provided that said angle encloses a maximum of 45 ° with the main transport direction, ie 45 ° or less.

In generic sawing devices according to the prior art, it is customary to provide a so-called pressure bar which can be lowered onto the workpieces to be sawn in order to press them onto the workpiece supporting plane during the sawing process. Here is usually worked with great forces, so that a clean cut is made. In particular, in generic devices with such pressure bar, it is advantageous if the workpiece support plane is formed at least adjacent to the saw line as the surface of a workpiece support plate. In the workpiece support plate can then be provided for workpiece support side open recesses, the transporters are mounted in the recesses. The workpiece support plate forms a correspondingly stable abutment for the pressure bar. By the workpiece support side open recesses in the workpiece support plate, it is possible to arrange the conveyors very close to the saw line. This in turn makes it possible to space the sawed workpieces in the direction of transport directly behind the saw line in the direction transverse to the main transport direction.

In order to use inexpensive, relatively small Sägevorrichtungen or saw blades for sawing the workpieces, the thickness of the workpiece support plate should be as low as possible. Furthermore, the conveyors should be arranged as possible within the workpiece support plate, so do not survive on this at least in a retracted operating position.

In this sense, it is advantageous if the transporters have at least one operating position in which they are arranged completely within the workpiece support plate. The workpiece support plate conveniently has thicknesses of 15 mm to 45 mm. In order to form the air cushion already mentioned above, corresponding embodiments of the invention can provide that the workpiece support plate has open air outlet openings for the workpiece support side for forming an air cushion between the workpiece support plate and the workpiece. Further details and features of preferred embodiments of the invention will be explained with reference to the description of the figures.

Fig. 1

beispielhaft ein an sich bekanntes Aufteilschema für ein plattenförmiges Werkstück

Fig. 2 und 3

schematische Darstellungen zur Erläuterung des durch die Erfindung zu lösenden Problems;

Fig. 4

eine schematische Darstellung zur Wirkung der erfindungsgemäßen Lösung;

Fig. 5

eine schematisierte Draufsicht auf eine erfindungsgemäße Einrichtung zum Zersägen von zumindest zwei Platten oder plattenförmigen Werkstücken;

Fig. 6

eine Darstellung zu einem beispielhaft ausgewählten anderen Schnittschema;

Fig. 7

eine Detaildarstellung zu als Nocken ausgeführten Transporteuren der Einrichtung gem. Fig. 5;

Fig. 8

eine Detaildarstellung zur Anordnung mehrerer Nocken auf einer gemeinsamen Antriebswelle;

Fig. 9

eine schematisierte Detaildarstellung der Einrichtung gem. Fig. 5 in dem die Sägelinie umgebenden Bereich;

Fig. 10

eine entsprechende Ansicht entgegen der Haupttransporteinrichtung auf die in Fig. 9 dargestellte Situation und

Fig. 11 bis 14

schematische Darstellungen zu einer alternativen Ausgestaltungsform der Transporteure

Show it:

Fig. 1

by way of example a distribution scheme known per se for a plate-shaped workpiece

FIGS. 2 and 3

schematic representations for explaining the problem to be solved by the invention;

Fig. 4

a schematic representation of the effect of the solution according to the invention;

Fig. 5

a schematic plan view of an inventive device for sawing at least two plates or plate-shaped workpieces;

Fig. 6

a representation of an example selected other cutting scheme;

Fig. 7

a detailed representation of designed as a cam transporters of the device acc. Fig. 5 ;

Fig. 8

a detailed view of the arrangement of a plurality of cams on a common drive shaft;

Fig. 9

a schematic detail of the device acc. Fig. 5 in the area surrounding the saw line;

Fig. 10

a corresponding view opposite to the main transport on the in Fig. 9 illustrated situation and

Fig. 11 to 14

schematic representations of an alternative embodiment of the conveyors

The cutting plan gem. Fig. 1 is selected only as an example. He first shows a plan view of a plate which has already been sawed by means of a longitudinal section along a section line 25 in the main transport direction 3 in two strip-shaped workpieces 1. To make the desired final formats 27 and 28 Now, the sections along the dashed lines shown cut lines 26 must be sawn transversely to the main transport direction 3 yet.

Basically, it should be noted that in the Fig. 1 to 6 to be cut lines 26 dashed and already sawn cut lines 26 are shown in solid. The final formats 27 and 28 are ultimately the sawed workpieces 1.

In Fig. 1 is easy to see that the still cut lines 26 of the two strip-shaped workpieces 1 are spaced differently far from each other. In order to perform the corresponding cuts along the cutting lines 26 in the two workpieces 1 at least partially as common sawing operations, it is known in the prior art, each of the two strip-shaped workpieces 1 with its own feed device 2a and 2b in the main transport direction 3 and thus to Saw line 5 and beyond.

To explain the known per se, to be solved by the invention problem are in the FIGS. 2 and 3 only the independently movable feed devices 2a and 2b, the two strip-shaped workpieces 1 and the saw line 5 located. Fig. 2 shows the situation in which the feed device 2a has already transported the gripped by means of the known clamp 29 workpiece 1 so far that along the sawing line 5 two cuts along the cutting line 26 could be performed. During this sawing and transport operations of this strip-shaped workpiece 1 by means of the feed device 2a, the other strip-shaped workpiece 1 was approached by the feed device 2b only to the sawing line 5. In order to be able to carry out the first cut of the workpiece 1 transported by the feed device 2b together with the cut along the third cutting line 26 in the workpiece 1 transported by the feed device 2a in a common sawing process, the feed device 2b must move the workpiece 1 associated therewith further in the main transport direction 3 move as the feed device 2a, the workpiece assigned to her 1. By hooking or by friction of the two adjacent workpieces. 1 It may come to rotate or move the already sawed end formats 28, as in Fig. 3 The invention is intended to solve this problem known per se in the prior art and also described in the documents cited at the outset.

For this purpose, according to the invention, as in Fig. 4 shown, the already sawed workpiece 1 and its end formats 28 in the direction 8 transverse to the main transport direction 3 of corresponding, in Fig. 4 not shown transporters 6, seen in the main transport direction 3, immediately behind the saw line 5 is offset by the transverse transport 13. This prevents the feed of the other workpiece 1 by means of the feed device 2b, the in Fig. 3 shown twisting the already sawed end formats 28 can happen.

Fig. 5 now schematically shows a plan view of an inventive device for sawing at least two plate or plate stack-shaped workpieces 1. Schematically illustrated is the workpiece support plane 11, on which the workpieces to be sawed 1 rest. On display again are the feed devices 2a and 2b, which grasp the respective workpieces 1 with their known clamps 29 in order to be able to push them further in the main transport direction 3 to the sawing line 5 and thereafter. In the in Fig. 5 In the variant shown, it is provided that the sawed workpieces 1 and / or endforms 28 of the workpiece 1 transported by the feed device 2a are offset in the direction 8 transversely to the main transport direction 3 by the conveyors 6, while the sawed workpieces 1 or endforms 27 of the other workpiece 1 in a direction 9 opposite to the direction 9 transverse or orthogonal to the main transport direction 3 by means of corresponding, here in Fig. 5 not shown transporters 6 are added. Fig. 5 shows that it gem. the invention is possible to perform this offset along the respective transverse transport paths 13, seen in the main transport direction 3, immediately following the sawing line 5.

Preferred embodiments of the invention, such as those in Fig. 5 shown that a workpiece support area 22, in which workpieces on the of the feed devices 2a, 2b facing away from the saw line 5 can be arranged on the workpiece support side 10, in at least one direction 8, 9 transverse to the main transport direction 3, preferably on both sides, by stops 23, 24 is limited. In the embodiment gem. Fig. 5 is the workpiece support portion 22 in both directions 8 and 9 transversely to the main transport direction 3 of each stop 23 and 24 limited. The conveyors 6 push the respective end formats 27 and 28 against the respective stops 23 and 24, respectively, in such a way that the end formats or sawed workpieces can be transported further in the main transporting direction 3 in a clean alignment with the respective feed devices 2a and 2b. Preferred variants of such embodiments provide that at least one of the stops 23 and 24 is adjustable transversely to the main transport direction 3 in its position. Im, in Fig. 5 shown embodiment, this is the case of the stop 23. The adjustment is illustrated by the double arrow 30. Of course, however, both stops 23 and 24 can be adjusted accordingly. In alternative embodiments can also be provided that neither of the two stops 23 and 24 is adjustable. Furthermore, it is favorable that, as also realized here, at least one of, preferably all, stops 23 and 24 are formed as in the main transport direction 3 longitudinally extended stop rulers.

In a simplified embodiment may differ from the in Fig. 5 Of course, embodiment shown also be provided that only the final formats 27 or 28 of one of the workpieces 1 are offset in one of the directions 8 or 9.

Fig. 6 shows to illustrate possible alternatives that method of the invention, of course, can not be used only in two stripe-shaped workpieces 1 to be sawn together. In Fig. 6 the original plate or the original plate stack was first sawed by means of two longitudinal sections along longitudinal cutting lines 25 into three strip-shaped workpieces 1. The sections still to be performed along the cutting lines 26 transversely to the main transport direction 3 should also be carried out as efficiently as possible and thus simultaneously to produce the final formats 27 and 28, respectively. In the illustrated embodiment acc. Fig. 6 are to be made cut lines 26 of two strip-shaped Workpieces 1 formed equidistant. This has the consequence that these two strip-shaped workpieces 1 can be moved by a single feed device 2a in the main transport direction 3. The second feed device 2b is then used in this case to transport the third strip-shaped workpiece 1 in the main transport direction 3. In Fig. 6 are, as already in the Fig. 2 to 5 those clamps 29, which are not needed, shown in dashed lines. It is known per se in the prior art to lift these unneeded clamps 29 over the workpiece support level 11 in such a way that they do not collide with workpieces 1 pushed by other feed devices.

In Fig. 6 is also exemplified that the cutting lines 26 in a single workpiece 1 does not necessarily have to be equidistant. Of course, from a single strip-shaped workpiece 1 in the main transport direction 3 different final sizes 27 can be sawn out. For the sake of completeness, it is pointed out that a corresponding sawing device can naturally also have more than two feed devices 2a and 2b, eg three feed devices. All this does not change the possibility of the sawed workpieces 1 and final formats 27 and 28 following the saw line 5 according to the invention to space each other so that the basis of Fig. 3 explained problem can not occur. If at the same time sawing three or more workpieces 1 in final formats, it may be provided following the sawing line 5 that the centrally located end formats are not offset laterally and the outside respectively adjacent end formats in opposite directions 8 and 9 transverse to the main transport 3 be offset. However, the desired spacing can also be achieved if the final formats of a workpiece 1 in direction 8 and the end formats of the other workpieces 1 are offset to different degrees in the opposite direction 9. All this is possible with devices according to the invention in the case of three or more workpieces 1 to be diced in parallel or together.

Fig. 7 shows in a detailed view a section parallel to the saw line 5 through the workpiece support plate 18. To see are two, formed in the form of cam conveyors 6, which in corresponding recesses 19 of the workpiece support plate 18 are arranged. Both cams are each mounted rotatably about the respective axis of rotation 15 on a shaft 33. The axes of rotation 15 extend in this embodiment parallel to each other and parallel to the main transport direction 3. The here in the form of cams formed transporters 6 are so small that they, in the in Fig. 7 shown operating position are arranged completely within the workpiece support plate 18. The contact surface 7 of the respective transporter 6 or cam is in each case the most distant from the axis of rotation 15 surface area of the respective cam. In order to increase the friction between the sawn workpieces 1 and end formats 27 or 28 and the respective contact surface 7, the contact surfaces 7 may be provided with means for increasing the friction. These can be coatings or coverings of appropriate material. As a material z. B. a suitable elastomer such. B. rubber or a vulcanized rubber layer.

The Fig. 7 shows the two conveyors 6 and cams in the respective rest position in which they are not in contact with the chamfered workpieces 1 resting on the workpiece support plate 18 or the workpiece support plane 11 formed by them. From this rest position he will be in Fig. 7 Cams or transporter 6 shown on the left are rotated in the direction 16 about its axis of rotation 15 in order to transport the end format 27 resting on the workpiece support plane 11 transversely to the main transport direction 3 in the direction 9 and thus spacing it from the final format 28. During this rotation in the direction 16, the contact surface 7 of the cam shown on the left is extended from the workpiece support plane 11, starting at a certain angular position of the cam on the workpiece support side 10. The contact surface 7 then comes into contact with the end format 27. By further rotation of the conveyor 6 or cam in the direction 16, the contact surface 7 is then moved in the direction 9 transverse to the main transport direction 3 along the transverse transport path 13. In this case, the contact surface 7 or the cam takes on him resting end format 27 or sawed workpiece 1 in the direction 9 along the transverse transport path 13, resulting in the desired spacing of the final format 27 of the final format 28 results. At the end of the transverse transport path 13, the contact surface 7 by further rotation of the cam then back to the workpiece support plane 11 and over retracted. The rest or starting position of the cam or the conveyor 6 is conveniently as in Fig. 7 represented, always vertically downwards. In the described stroke is conveniently carried out always a full 360 ° rotation. Conveniently, each cam can be rotated about its axis of rotation 15 both in one direction and in the opposite direction. By means of these measures, a respective cam can perform a sequence of offset movements, whether in one direction or the other, without ever requiring an idle stroke or a return movement. The lifting of the sawn workpiece 1 or end format 27 can take place in a first variant by an air cushion formed between the workpiece support plane 11 and the respective sawn workpiece 1 or end format 27 or 28. This can, as known and in Fig. 7 only schematically shown, a sequence of air outlet openings 20 may be provided in the workpiece support plane 11. The lowering of the sawn workpiece or Endformates then takes place after the transverse transport, if desired, by appropriately switching off the air cushion. Alternatively, however, it may also be provided that the cam itself raises the sawed-on workpiece or final format resting on its contact surface 7 and lowers it again at the end of the transverse transport path 13.

The for the in Fig. 7 The procedure described on the left generally applies favorably to all cam-shaped transporters 6, that is to say also to those provided on the right, although in the exemplary embodiment shown its direction of rotation 17 opposes the direction of rotation 16 of the other cam. As a result, the end format 28 is transported in the direction opposite to the direction 9 8 transverse to the main transport direction 3 along a transverse transport path 13. Conveniently, a plurality of corresponding conveyors 6 are distributed over the entire workpiece support plate 18. The distance between adjacent conveyors 6 to each other should be chosen favorably so that even the smallest end format 27 or 28 in the described offset movement in the main transport direction 3 and also transversely to the main transport direction 3 rests on at least two transporters 6. An irregular arrangement of the conveyors 6 is possible, for. B. if in an area ever larger Final formats are made as in another. Generally speaking, the arrangement or the spacing of the respective transporters 6 and the transport directions 8, 9 that can be carried out by them can be adapted transversely to the main transport direction 3 to the final formats to be processed. The same applies to the question of whether the transporters can transport 8 and 9 in both directions transversely to the main transport direction 3 or only in one of these directions.

In general, it should be pointed out that each transporter 6 can be assigned its own or several own drives 12 in order to be able to carry out the described movements. However, it is more efficient in terms of machine technology if at least one common drive 12 is assigned to a plurality of conveyors 6, preferably a group of conveyors 6, which are intended to execute a movement in the same direction. In this sense, in the previously discussed embodiment, as in Fig. 8 shown, provided that several, here designed as a cam conveyors 6 are arranged on a common shaft 33 and are rotatable therewith. Between the spaced-apart transporters 6, gem. Fig. 8 Bearing elements 32 are provided which form part of the workpiece support plate 18 and are not rotated. The shaft 33 and thus also the axis of rotation 15 advantageously runs parallel to the main transport direction 3. However, angular arrangements can also be realized. In this case, it is conveniently provided that the angle between the axis of rotation 15 or shaft 33 and the main transport direction 3 in a plan view of the workpiece support plane 11 is a maximum of 45 °.

Fig. 9 shows a perspective view in the region of the saw line 5 of the schematically in Fig. 5 illustrated embodiment. In order to carry out the sawing process along the sawing line 5, as is known, a sawing device 4 is provided, which is shown here only schematically. In the embodiment shown, the sawing device 4 is a circular saw blade movable along the sawing line 5. This is for sawing the workpieces 1 on the workpiece support side 10 can be raised and also after the cut again on the opposite side, ie below the workpiece support level 11 lowered. All this is known per se and need not be described here. It can also any other sawing devices 4, as they are known in the art and are suitable for the sawing device in itself, are used.

In order to be able to press the workpieces 1 to be sawn onto the workpiece supporting plane 11 during the sawing process, as is known, a pressure bar 21 which can be lowered onto the workpieces 1, not shown here, is provided. This is movably mounted on the uprights 34 in the vertical direction. This too is known per se and need not be explained further. Furthermore are in Fig. 9 the two executed as stop rulers stops 23 and 24 drawn, whose function has also already been explained. How very good in Fig. 9 can be seen, the workpiece support plane 11 in the area, seen in the main transport direction 3, formed behind the saw line 5 of a surface of the workpiece support plate 18. In this workpiece support plate 18 are, as with reference to Fig. 7 and 8th explained transporters 6 arranged in the form of cams in the respective recesses 19. The transporters 6 arranged in the main transport direction 3 one behind the other are seated, as in FIG Fig. 8 Shown on a common shaft 33. The drive 12 for the shafts 33 or transporters 6 is located on the workpiece support side 10 opposite side of the workpiece support plane 11 and thus in the illustrated embodiment below the workpiece support plate 18. The common drive 12 is based on Fig. 10 explained. It is designed in several parts in the embodiment shown and also has a plurality of actuators. The individual components of the common drive 12 and their function are explained below: An offset carriage 35 can be moved across the guide rails 36 and by means of the offset carriage actuator 37 and the spindle 38 in both directions 8 and 9 transversely to the main transport direction 3. The offset carriage 35 carries the intermediate slide 41 via the lift actuators 39. By means of the lift actuators 39, the intermediate slide 41 and all components fastened to it can be raised and lowered in the vertical direction along the guide rails 40. On the intermediate slide 41, in turn, the first Queraktuator 42 and the second Queraktuator 43 are attached. Each of these Queraktuatoren 42 and 43 carries a rack 14, which serves a group of drive gears 31 and thus the on the corresponding Shaft 33 associated cam or conveyors 6 to rotate. Before a respective offset movement in direction 8 or 9 of the sawn, in Fig. 10 not shown workpieces 1 and end formats 27 and 28 are formed in this embodiment as a cam transporters 6 conveniently in the starting position or rest position gem. Fig. 7 , The intermediate slide 41 and thus also the racks 14 are lowered. By the offset carriage actuator 37 and optionally also the Queraktuatoren 42 and 43, the racks 14 are pre-positioned in directions 8 and 9. Subsequently, the Hubaktuatoren 39 lift the intermediate slide 41 and thus also the racks 14 so far until the racks 14 come into engagement with the respective drive gears 31. Subsequently, the two Queraktuatoren 42 and 43 move their respective associated racks 14 in the desired direction, so that the not sawed workpieces 1 and end formats 27 and 28 in the respective desired direction 8 and 9 are moved transversely to the main transport direction 3 and thus be spaced apart. In this process, the cams are conveniently rotated by 360 °, so that at the end of the sequence again in the starting or rest position gem. Fig. 7 are located. Subsequently, the intermediate slide 41 and thus also the racks 14 are lowered again, so that again the desired pre-positioning can be carried out and the common drive 12 is ready for the next separation of the final sawing process or sawed workpieces. The gap 45 between the racks 14 is conveniently positioned so that the line of intersection 25 between the two workpieces 1 to be sawn corresponds to the gap 45. The various actuators can, as known in the prior art, be designed in various ways, eg hydraulically, pneumatically or electrically.

Of course, as already explained, this is just one way, exemplified here, of how the conveyors 6 can be driven. Individual drives for each conveyor 6 or other forms of common drives 12 are conceivable.

The Fig. 11 to 14 show by way of example that the transporters 6 need not necessarily be designed as rotatable cams. Shown is one, too Fig. 7 similar longitudinal section. In this embodiment, the conveyors 6 are formed in the form of telescopically extendable and retractable punches. It can be z. B. to act pneumatic, hydraulic or electrically driven stamp. In addition, the stampers forming the conveyors 6 are still displaceable along a guide rail 44 in the respective recess 19 in the directions 8 and 9 transversely to the main transport direction 3. The contact surfaces 7 of this stamp-shaped conveyors 6 are shown. These contact surfaces 7 can also be equipped with corresponding friction-increasing means, as already explained with regard to the cams.

As an example, in the Fig. 11 to 14 a sequence of starting, intermediate and end positions for the inventive displacement of the sawn workpiece 21 and the final format 27 in the direction 9 shown transversely to the main transport direction. In Fig. 11 the transporter 6 is in its rest or starting position. The contact surface 7 is retracted to the side opposite the workpiece support side 10 of the workpiece support plane 11. In Fig. 12 was the contact surface 7 now extended and has the sawn workpiece 1 and end format 27 lifted from the workpiece support plane 11. Subsequently, the movement of the contact surface 7 and thus also of the sawn workpiece 1 or end format 27 takes place in the direction 9 transverse to the main transport direction 3 along the transverse transport path 13. The situation at the end of the transverse transport path 13 is in Fig. 13 shown. Subsequently, the contact surface 7 is again withdrawn or retracted to the side opposite the workpiece support side 10 with respect to the workpiece support plane 11, whereby the sawed workpiece 1 or end format 27 is lowered back onto the workpiece support plane 11. When comparing the FIGS. 11 and 14 one sees the desired effect, namely the spacing of the sawed workpiece 1 and the final format 27 in the direction 9 transverse to the main transport direction of a not shown here other end format 28 or sawed workpiece 1. For the sake of completeness it should be noted that in these examples the raising and lowering of the sawed workpieces 1 and end formats by means a not shown here air cushion can be accomplished. In this case, the transporters 6 are again responsible only for the execution of the transverse transport along the transverse transport path 13. Legend to the reference numbers: 1 workpiece 30 double arrow 2a, 2b feeder 31 drive gear 3 Main transport direction 32 bearing element 4 sawing 33 wave 5 sawing line 34 stand 6 carrier 35 offset cars 7 contact area 36 guide rail 8.9 direction 37 Versatzwagenaktuator 10 Workpiece support page 38 spindle 11 Workpiece support plane 39 lifting actuator 12 drive 40 guide rail 13 Quertransportweg 41 intermediate carriage 14 rack 42 first cross-actuator 15 axis of rotation 43 second cross-actuator 16 direction of rotation 44 guide rail 17 direction of rotation 45 gap 18 Workpiece support plate 19 recess 20 Air outlet opening 21 pressure beam 22 Workpiece support area 23 attack 24 attack 25 Cutting line in main transport direction 26 Cutting line transverse to the main transport direction 27 Final format 28 Final format 29 Klemmer

Claims (15)

1. Apparatus for sawing up at least two workpieces (1) which are in the form of a panel or a stack of panels, wherein the apparatus has at least two feed means (2a, 2b) which are movable independently of each other for displacing at least in each case one workpiece (1) in a main direction of transport (3), and at least one sawing device (4) for sawing up the workpieces (1) along a sawing line (5) transversely, in particular orthogonally, to the main direction of transport (3), and, viewed in the main direction of transport (3), on the side of the sawing line (5) opposed to the feed means (2a, 2b) a transport arrangement with a plurality of transporters (6) with in each case at least one contact face (7) for contacting one of the sawn-up workpieces (1) and for spacing apart the sawn-up workpieces (1) in at least one direction (8, 9) transversely to the main direction of transport (3), wherein the workpieces (1) upon displacement and upon sawing-up and upon spacing apart from each other can be arranged on a workpiece support side (10) of a workpiece support plane (11) of the apparatus, characterised in that at least the contact face (7) of a respective transporter (6) can be extended by at least one drive (12) of the transport arrangement out of the workpiece support plane (11) onto the workpiece support side (10) and then for spacing apart the sawn-up workpieces (1) is movable along a transverse transport path (13) in at least one of the directions (8, 9) transversely, preferably orthogonally, to the main direction of transport (3), and at the end of the transverse transport path (13) can be retracted at least as far as the workpiece support plane (11), preferably over the workpiece support plane (11).
2. Apparatus according to Claim 1, characterised in that the contact faces (7) of a first group of transporters (6) for spacing apart the workpieces (1) is movable in a first direction (8) transversely to the main direction of transport (3), and the contact faces (7) at least of a second group of transporters (6) is movable in a different direction (9), preferably opposed to the first direction (8), transversely to the main direction of transport (3).
3. Apparatus according to one of Claims 1 or 2, characterised in that at least one common drive (12) is associated with a plurality of transporters (6), preferably the transporters (6) of a group according to Claim 2.
4. Apparatus according to Claim 3, characterised in that the common drive (12) for a plurality of transporters (6) has a toothed rack (14) which is movable in at least two directions, preferably directions which are orthogonal to each other.
5. Apparatus according to one of Claims 1 to 4, characterised in that the transporters (6) are designed in each case as cams which are rotatable about an axis of rotation (15), the contact face (7) of the transporter (6) forming the surface region of the cam which is farthest from the axis of rotation (15).
6. Apparatus according to Claim 5, characterised in that the cams are rotatable about their respective axes of rotation (15) by their drive in each case by, preferably at least, 360° and/or in each case in opposing directions of rotation (16, 17).
7. Apparatus according to Claim 5 or 6, characterised in that a plurality of cams, preferably spaced apart from each other, are arranged on a common shaft (33) and are driven jointly preferably by means of the common shaft (33).
8. Apparatus according to one of Claims 5 to 7, characterised in that the axis of rotation (15) of a respective cam, preferably the common shaft (33) which is optionally present, when the workpiece support plane (11) is viewed from above, encloses an angle of at most 45° with the main direction of transport (3), preferably is arranged parallel to the main direction of transport (3).
9. Apparatus according to one of Claims 1 to 8, characterised in that the workpiece support plane (11) at least adjacent to the sawing line (5) is designed as the surface of a workpiece support plate (18), and recesses (19) which are open at least towards the workpiece support side (10) are arranged in the workpiece support plate (18), the transporters (6) being mounted in the recesses (19).
10. Apparatus according to Claim 9, characterised in that the transporters (6) have at least one operating position in which they are arranged completely within the workpiece support plate (18).
11. Apparatus according to Claim 9 or 10, characterised in that the workpiece support plate (18) has air exit openings (20) which are open towards the workpiece support side (10) for forming an air cushion between the workpiece support plate (18) and the sawn-up workpiece (1).
12. Apparatus according to one of Claims 9 to 11, characterised in that the apparatus has a pressure bar (21) for pressing the workpieces (1) against the workpiece support plate (18).
13. Apparatus according to one of Claims I to 12, characterised in that a workpiece support region (21), in which workpieces (1) can be arranged on the workpiece support side (10) on that side of the sawing line (5) which is remote from the feed means (2a, 2b), is delimited in at least one direction (8, 9) transversely to the main direction of transport (3), preferably on both sides, by stops (23, 24).
14. Apparatus according to Claim 13, characterised in that at least one of the stops (23, 24) is adjustable in position transversely to the main direction of transport (3) and/or in that at least one of the stops (23, 24) is designed as a longitudinal stop extending lengthwise in the main direction of transport (3).
15. A method for sawing up at least two workpieces (1) which are in the form of a panel or a stack of panels, in particular with an apparatus according to one of Claims 1 to 14, wherein at least two feed means (2a, 2b) which are movable independently of each other displace at least in each case one of the workpieces (1) in a main direction of transport (3), and at least one sawing device (4) saws up the workpieces (1) along a sawing line (5) transversely, in particular orthogonally, to the main direction of transport (3), and a transport arrangement with a plurality of transporters (6) with in each case at least one contact face (7) for contacting one of the sawn-up workpieces (1), which arrangement is arranged, viewed in the main direction of transport (3), on the side of the sawing line (5) opposed to the feed means (2a, 2b), spaces apart the sawn-up workpieces (1) in at least one direction (8, 9) transversely to the main direction of transport (3), wherein the workpieces (1) upon displacement and upon sawing-up and upon spacing apart are arranged on a workpiece support side (10) of a workpiece support plane (11) of the apparatus, characterised in that at least the contact face (7) of a respective transporter (6) can be extended by at least one drive (12) of the transport arrangement out of the workpiece support plane (11) onto the workpiece support side (10) and then for spacing apart the sawn-up workpieces (1) is moved along a transverse transport path (13) in at least one of the directions (8, 9) transversely, preferably orthogonally, to the main direction of transport (3), and at the end of the transverse transport path (13) is retracted at least as far as the workpiece support plane (11), preferably over the workpiece support plane (11).

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