EP2147761A2 - Method of dividing up large-scale plate-shaped workpieces and plate division facility - Google Patents

Abstract

The method involves producing a longitudinal edge consisting of a step or a bend, at a work piece by an end mill (34), where the work piece lies on a feeding table (12) of a plate partitioning system (10). A semi-finished part (50) is sawn by producing a straight longitudinal edge by a longitudinal section of a main saw (30) and a scoring saw (32), where the semi-finished part includes the longitudinal edge. A cross-section is introduced into the semi-finished part that is partitioned, in a region of the step. An independent claim is also included for a plate partitioning system for partitioning a large-size plate-shaped work piece for producing a furniture part, comprising a conveyor device.

Description

The invention relates to a method for dividing large-format plate-shaped workpieces according to the preamble of claim 1. The invention is further a Plattenaufteilanlage for dividing large-sized plate-shaped workpieces.

The DE 36 09 331 C1 describes a panel sorter that includes a tool trolley with a saw and a jig. Thus, both bores can be introduced into the workpiece, as well as saw cuts, in this panel dividing installation. From the market, a Plattenaufteilanlage is known, which is equipped with a variety of milling cutters with which the workpiece can be edited. Reference is also made to DE 10 2006 002 504 A1 ,

Object of the present invention is to provide a method which allows a fast complete division of the workpiece, with minimal waste, high quality cut and low cost.

This object is achieved by a method having the features of claim 1 and a Plattenaufteilanlage with the features of the independent claim. Further developments of the invention are specified in subclaims. For the invention important features can also be found in the following description and in the drawing. The features may be important both alone and in different combinations for the invention without the reference to each again.

The method according to the invention combines the advantages of milling with the advantages of sawing. When sawing little waste is produced, a saw cut has a high quality cut and the tool costs are low when sawing. Above all, however, the working speed of a sawing device is comparatively high. Milling, on the other hand, allows easy introduction of stepped or kinked edges by moving the workpiece relative to the milling device and / or the milling device relative to the workpiece. A combined movement on the one hand of the workpiece and on the other hand of the milling device is conceivable. The milling device advantageously comprises a milling cutter whose longitudinal axis is perpendicular to the workpiece plane.

It is understood that step (b) need not necessarily be performed after step (a). It is only important that a semi-finished product is produced, which has a straight (sawn) and a stepped (milled) longitudinal edge. This is also possible by first sawn off a "straight" strip without step or kink, and then by a longitudinal edge of this strip is processed by means of the milling device so that this longitudinal edge has said kink or the said step.

The method according to the invention is particularly favorable in an angular installation. Such an angular installation has a conveying direction bent by 90 degrees and two sawing devices whose sawing lines are at an angle of approximately 90 degrees to one another. Such an angle system allows a comparatively fast and continuous material flow without additional space required for a rotating device.

On the other hand, if the steps b and c, ie longitudinal sawing and cross-cutting, are carried out by the same sawing device, in such a case a turning device is required, which rotates the semifinished product between the two steps b and c by about 90 ° Degree turns. Such a rotating device may for example be integrated in the feed table.

A relatively complex plant is realized when the milling device and the sawing device are arranged on a common and along the saw line movable carriage. For example, the saw blades of the sawing device and the milling device can lie in one plane, so that the milling device is formed by a sawing gap which is usually present in a machine table can be passed when a milling operation is desired. Otherwise, the milling device is simply lowered so that it does not interfere with the saw cut (in step b). In principle conceivable, but somewhat more complex, of course, is an arrangement of the milling device on a separate carriage, which is movable parallel to the saw line.

For a good cut quality, the use of a scoring saw and a main saw is advantageous.

A precise work result can be achieved particularly well with an angle ruler, which can be used for the cross-sawn cut on the severed semi-finished product (step c).

In the production of the first longitudinal edge fall waste parts ("Nachschnittreste"). These can easily be disposed of via a standard waste flap, whereby an even more automated operation of the panel splitter and a relief of their operators is possible.

Figur 1:

eine schematische Draufsicht auf eine erste Ausführungsform einer Plattenaufteilanlage;

Figur 2:

eine schematische Draufsicht auf eine zweite Ausführungsform einer Plattenaufteilanlage;

Figur 3:

einen Aufteilplan zum Aufteilen eines großformatigen plattenförmigen Werkstücks in einer der Plattenaufteilanlagen der Figur 1 und 2;

Figur 4:

eine Darstellung des plattenförmigen Werkstücks von Figur 3 während eines ersten Verfahrensschrittes eines Aufteilverfahrens;

Figur 5:

eine Darstellung ähnlich Figur 4 nach dem ersten Aufteilschritt;

Figur 6:

eine Darstellung ähnlich Figur 4 während eines zweiten Aufteilschritts;

Figur 7:

eine Darstellung ähnlich Figur 4 eines abgetrennten Halbzeugs während eines dritten Verfahrensschritts;

Figur 8:

eine perspektivische Darstellung eines Bereichs der Plattenaufteilanlagen der Figuren 1 und 2 während des ersten Verfahrensschritts;

Figur 9:

eine Darstellung ähnlich Figur 8 während des zweiten Verfahrensschritts.

Hereinafter, embodiments of the invention will be described by way of example with reference to the drawings. In the drawing show:

FIG. 1:

a schematic plan view of a first embodiment of a Plattenaufteilanlage;

FIG. 2:

a schematic plan view of a second embodiment of a Plattenaufteilanlage;

FIG. 3:

an allocation plan for dividing a large-sized plate-shaped workpiece in one of the panel splitters of FIG. 1 and 2 ;

FIG. 4:

a representation of the plate-shaped workpiece of FIG. 3 during a first process step of a partitioning process;

FIG. 5:

a representation similar FIG. 4 after the first dividing step;

FIG. 6:

a representation similar FIG. 4 during a second scheduling step;

FIG. 7:

a representation similar FIG. 4 a severed semi-finished product during a third process step;

FIG. 8:

a perspective view of a portion of the Plattenaufteilanlagen the FIGS. 1 and 2 during the first process step;

FIG. 9:

a representation similar FIG. 8 during the second process step.

A first embodiment of a panel-forming installation is shown in FIG FIG. 1 overall, the reference numeral 10. It comprises a first feed table 12, which consists of a plurality of roller conveyors (not shown). Laterally from the first feed table rails 14 are provided, on which a first portal-like carrier 16 is movably guided. The carrier 16 is also referred to as the first program slider 16. At the first program slider 16 first collets 18 are attached. The first collets 18 can grip a large-format and plate-shaped workpiece 20 lying on the first feed table 12 and engage in both a first conveying direction (arrow 22) and against this first conveying direction 22 move. First program slider 16 and first collets 18 define a first conveyor 24 so far.

A first machine table 26, whose upper side lies in the same plane as the first feed table 12, adjoins the first feed table 12 in the direction of the first conveying direction 22. Below the first machine table 26, a first saw carriage 28 is arranged, which in turn carries a main saw 30, a scoring saw 32 and a finger milling cutter 34. Main saw 30, scoring saw 32 and end mill 34 are in a plane perpendicular to the plane of the plane FIG. 1 stands, in the area of a sawing gap 36 in the first machine table 26. The main saw 30 and end mill 34 define a Längssägeeinrichtung, the end mill 34 a milling device. Through the sawing gap 36 and the direction of movement of the first saw carriage 28 along the saw blade 36 a dash-dotted first sawing line 38 is defined.

To the first machine table 26 includes a cross transfer carriage 40, which extends into a second feed table 42. Above this, in turn, lateral rails 44 are present, on which a second program pusher 46 is guided with second collets 48. By means of the second collets 48, a semi-finished product 50, whose formation will be discussed below, are moved in a second conveying direction 52. By the second program pusher 46 and the second collets 48, a second conveyor 54 is defined so far. It can be seen that the second conveying direction 52 is at an angle of 90 degrees to the first conveying direction 22.

The second feed table 42 leads to a second machine table 56, below which a second saw carriage 58 with a main saw 60 and a scoring saw 62 is arranged. Main saw 60 and scoring saw 62 define a cross saw. The second machine table 56 also has a sawing gap 64, which is aligned along the direction of movement of the second saw carriage 58 and defines a second sawing line 66. At the second machine table 56, a discharge table 68 connects. It should be noted at this point that both above the first sawing gap 36 and also above the second sawing gap 64, a pressure bar is arranged in each case, but in FIG. 1 is not drawn for purposes of illustration. By the pressure bar, a workpiece during processing against the respective machine table 26 and 56 are clamped.

• Figur 3 zeigt eine Draufsicht auf das großformatige Werkstück 20, welches auf dem ersten Zuführtisch 12 liegt, sowie einen durch entsprechende Linien angedeuteten Aufteilplan dieses Werkstücks 20. Man erkennt, dass das Werkstück 20 in eine Vielzahl von unterschiedliche Abmessungen aufweisende rechteckige Endprodukte aufgeteilt werden soll. Durch die Aufteilung entsprechend dem Aufteilplan von Figur 3 entsteht Abfall (Nachschnittreste), der in Figur 3 schraffiert gezeichnet ist. Nachfolgend wird im Detail erläutert, wie zunächst das erste streifenartige Halbzeug 50 und aus diesem wiederum insgesamt 5 Endprodukte 72a bis 72e erzeugt werden.

The operation of the panel splitter 10 is controlled by a control and regulating device (not shown). For this purpose, the control and regulating device has a memory on which a computer program is stored. Upon execution of the computer program, a method is executed which will be described below with reference to FIGS FIGS. 3 to 7 explains:

• FIG. 3 shows a plan view of the large-sized workpiece 20, which is located on the first feed table 12, and an indicated by corresponding lines sharing plan of this workpiece 20. It can be seen that the workpiece 20 is to be divided into a plurality of different dimensions having rectangular end products. By the division according to the allocation plan of FIG. 3 there is waste (aftercuts), the in FIG. 3 hatched is drawn. In the following, it will be explained in detail how first the first strip-like semifinished product 50 and, in turn, a total of 5 end products 72a to 72e are produced.

First, the workpiece 20 is positioned by the first conveyor 24 relative to the first sawing line 38. Then by means of the end mill 34 by a corresponding movement of the first Sägewagens 28 and a matched with the movement of the first Sägewagens 28 movement of the workpiece 20 by the first conveyor 24 (the corresponding arrows are in FIG. 4 designated by the reference numerals 73a to 73e) a two stages 74a and 74b having the first longitudinal edge 76 on the workpiece 20 generates. This process is very good too FIG. 8 seen. The resulting first Nachschnittrest 78 is a in FIG. 1 non-visible waste flap disposed in the direction of the first conveying direction 22 immediately behind the first sawing line 38, disposed of. The result is in FIG. 5 shown.

The workpiece 20 is then moved by the first conveyor 24 further in the direction of the first conveying direction 22 and positioned relative to the first sawing line 38 so that by a first corresponding longitudinal saw cut (arrow 80 in FIG FIG. 6 ) by means of the Längssägeeinrichtung 30, 32, a second, linear longitudinal edge 82 is produced. This process is again in FIG. 9 shown. By the longitudinal saw cut 80, the semifinished product 50 is separated from the workpiece 20.

Now the semifinished product 50 is transported from the transverse transfer carriage 40 to the second feed table 42, detected there by the second conveyor 54 and along the second Transport direction 52 to the second sawing 60, 62 transports. In this case, the semi-finished product 50 lies with its second longitudinal edge 82 at a merely in FIG. 7 shown angle ruler 84 on.

The second conveyor 54 initially positions the semi-finished product 50 so that a trimming cut (arrow 86 in FIG FIG. 7 ) can be carried out. The second conveyor 54 now moves the semifinished product 50 further until the first step 54 lies in the region of the second sawing line 66. Now, by a corresponding cross section (arrow 88a in FIG. 7 ) produces the first end product 72a. By successively moving the semifinished product 50 in the direction of the second conveying direction 52 and introducing cross sections 88b, 88c, 88d and 88e, the further end products 72b to 72e are sawed off by the second sawing device 60, 62. The end products 72a to 72e can be removed by the operating staff of the panel dividing plant 10 at the unloading table.

It is understood that instead of a coordinated movement of both the end mill 34 and the first conveyor 24, only the end mill 34 could be moved. A rigid end mill and a corresponding movement of the workpiece 20 would be conceivable.

In FIG. 2 an alternative embodiment of a panel divider 10 is shown. It is true that such elements and areas which are functionally equivalent to elements and areas of the panel splitter of FIG. 1 , bear the same reference numerals and are not explained again in detail.

While the in FIG. 1 shown plate divider 10 is a so-called "angle system", which two to each other at an angle of 90 degrees standing conveying directions 22 and 52 and two sawing 30, 32 and 60, 62, has the panel splitter 10 of FIG. 2 but only via a conveyor 24 with a conveying direction 22. With the panel splitter 10, however, a method can also be performed, as described above in connection with the panel splitter 10 of FIG. 1 was explained.

However, the semi-finished product (in FIG. 2 not drawn) after its separation from the workpiece 20 is rotated manually by an operator on the unloading table 68 by 90 degrees and positioned relative to the saw line 38 in abutment with the angle ruler 84 so as to make the trimming cut 86 and the cross cut cuts 88a to 88e with the same sawing device 30, 32, which had already been used for the production of the second longitudinal edge 82.

In one embodiment, not shown, has in FIG. 2 shown Plattenaufteilanlage over an additional lateral conveyor through which the strip-like semi-finished gripped and automatically the sawing device for producing the cross-sawn cuts can be supplied.

Claims (11)

Method for splitting large-format plate-shaped workpieces (20), in particular for producing furniture parts, in which a workpiece (20) lying on a feed table (12) is conveyed by a conveyor (24) in a conveying direction (22) of a sawing device (30) ), characterized in that it comprises the following steps: (a) producing a first longitudinal edge (76) having at least one step (74) or bend on the workpiece (20) lying on the feed table (12) by means of at least one milling device (34); (b) sawing off a semi-finished product (50) having the first longitudinal edge (76) or which will have the first longitudinal edge by forming a rectilinear second longitudinal edge (82) by means of a longitudinal section of the sawing means (30), (32); (C) introducing a cross section into the separated semi-finished product (50), preferably at least in the region of the step (74). A method according to claim 1, characterized in that it is carried out in an angular installation (10), the semi-finished product after step (b), which in a Längssägeeinrichtung (30), (32) of the angular installation (10), a cross-saw device (60 ), (62) whose saw line (66) is at an angle of approximately 90 ° to the saw line (38) of the Längssägeeinrichtung (30), (32) is supplied to perform step (c). A method according to claim 1, characterized in that the steps (b) and (c) are realized by the same sawing means (30), (32), and that the semifinished product is rotated by approximately 90 ° between steps (b) and (c). Method according to one of the preceding claims, characterized in that the step (74) or the kink in step (a) at least by a to the conveying direction (22) parallel movement of the workpiece (20) is produced. Method according to one of the preceding claims, characterized in that the step (74) or the kink in step (a) at least by a to the conveying direction (22) parallel movement of the milling device (34) is produced. Panel dividing system (10) for dividing large-format plate-shaped workpieces (20), in particular for the production of furniture parts, with at least one feed table (12), at least one conveyor (24) and at least one sawing device (30), (32) the saw line (38) transversely to a conveying direction (22) of the conveying device (24), characterized in that it comprises at least one milling device (34) and a control and regulating device which is programmed to carry out a method according to one of the preceding claims. A panel dividing installation (10) according to claim 6, characterized in that the milling device (34) and the sawing device (30), (32) are arranged on a common carriage (28) movable along the saw line (38). Panel dividing installation (10) according to one of claims 6 or 7, characterized in that the Sawing device comprises a scoring saw (30) and a main saw (32). Panel dividing installation according to one of claims 6 to 8, characterized in that it has an angular ruler (84) which is arranged at an angle of preferably 90 ° to a sawing line (66) and at which the severed semi-finished product (50) in step (c ) can be applied. Panel dividing plant (10) according to one of claims 6 to 9, characterized in that it comprises a waste flap by means of which a waste (78) arising in step (a) can be disposed of automatically. Panel dividing installation according to claim 6, characterized in that the milling device is arranged on a separate carriage which can be moved parallel to the saw line.

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