EP2193894A1 - Method for sawing up at least one board - Google Patents

Abstract

The method involves serrating a partial insertion section, where the insertion section runs along a linear intersection (4), particularly in a parallel manner. A plate (1) is sawed only at a road section (9), which is shorter than total recess of the plate in a direction (10) of an insertion intersection (8).

Description

The present invention relates to a method for sawing at least one plate with a panel sizing saw with at least one saw blade, in particular circular saw blade, wherein the plate in a first process section by means of a first cut or multiple first cuts along a linear first cut line of the first cut or a plurality of linear, in particular parallel, Erstschnittlinien the first cuts are sawed into mutually completely separate plate strips and the plate strips are then sawed in a second process section by means of a second cut or a plurality of second cuts along a linear second cut line of the second cut or more linear, in particular parallel, second cut lines of the second cuts in completely separate sub-plates, wherein the First cut line (s) is (are) arranged obliquely or orthogonal to the second cut line or the second cut lines.

The division of a plate or large plate by means of a Plattenaufteilsäge or a Plattenaufteilanlage is a strictly sequential process. In the first dividing cycle or in the first method section, plate strips are produced from the plate. In the further division cycle or in the second process section, these strips are then sawn into partial plates. At the end of the first stage of the process are completely separate plate strips. At the end of the second process section, these are sawn into completely separate sub-panels. The method known per se in the prior art functions without any problems, as long as the part plates to be cut in the result coincide in at least one edge length with the width of the plate strips to be zuzusägenden in the first process section. It becomes problematic if the partial plates which are to be sawn out of a plate strip do not coincide at least in one edge length. In the prior art so-called third cuts are performed in this case to saw out of an intermediate format the final desired final format of the sub-plate. These third cuts have the problem that the intermediate formats must be re-inserted after the second process section in the panel sizing to the third section for the production of the sub-plate with the desired Dimensions to perform. This is both time consuming and labor intensive.

From AT 361700 a Plattenaufteilanlage is known, with a generic method for sawing at least one plate can be performed. The above problem with the third cuts is already in the embodiment according to Fig. 4 shown in this font. To overcome this problem with the third cuts, it is proposed in AT 361700 to use a total of four saw blades at different work stations of the panel sizing saw. The solution of the third-cut problem shown in the AT 361700 requires a very complex and thus cost-intensive construction of the panel splitter or saw, which pays off only for large numbers of plates to be sawn.

The object of the invention is therefore to further develop a generic method, so that the third-cut problem is solved in a simple and cost-effective manner.

For this purpose, the invention provides that during the first process section along at least one linear, preferably parallel to the (the) Erstschnittlinie (s) extending insert cut line at least one insert cut is sawed in which the plate is sawed only on a section which is shorter than the entire extension of the plate in the direction of the insert cutting line is.

According to the invention, it is thus provided that during the first method section additional insert cuts are cut along linear insert cutting lines, which preferably run parallel to the first cut line (s). However, the insert cut or insert cuts are shorter than the first cuts. While in the first cuts the plate is sawn over its entire length in completely separate plate strips, the insert cuts only over a partial distance, which is shorter than the entire extent of the plate in the direction of the insert cutting line.

In particular, when the saw blade used is a circular saw blade, in this procedure at one end of the partial section a cutting end remains, which extends longitudinally in the direction of the insert cutting line over a cutting end length. As a rule, this cut end should not be visible in any of the finally produced partial plates. In order to prevent this, a preferred embodiment of the method according to the invention provides that subsequent to the first method section, in the second method section with at least two second cuts, at least one waste strip is sawn out of the plate strip in which the insert cut is arranged, wherein at least the cut end of the partial section of the insert cut is arranged completely within the waste strip. In other words, in the second process section, a waste strip is thus sawn out in the region in which the cut end of the insert cut falls, so that the cut end is no longer visible in the finally produced partial plates.

In preferred embodiments, the first cut lines are parallel to each other and the second cut lines are preferably also parallel to each other. In addition to the first cut lines, the insert cut lines are also conveniently arranged. The first cut lines and the second cut lines can be arranged orthogonal to one another, ie at a 90 ° angle to each other. Deviating from this, however, it is also possible for the first cut lines to be arranged obliquely, that is to say neither orthogonally nor parallel to the second cut lines. Moreover, the first cut lines do not necessarily have to be parallel to one another or parallel to the insert cut lines. The same applies to the second cut lines with each other.

On the one hand, the method according to the invention can be used with comparatively simple panel dividing saws. These usually have a sawing line with a saw blade, wherein the handling or insertion of the plate and plate strips is usually performed manually by a machine operator. On the other hand, however, the method according to the invention can also be carried out in fully automated panel sizing saws which have one, two or more sawing lines and thus a corresponding number of saw blades and in which panel handling is carried out automatically. In these so-called panel dividing systems, the operator has mainly supervisory character. If the method according to the invention is used in panel dividing systems with at least two sawing lines, it may be provided that the first cut or cuts and the insert cut (s) are sawn by a first saw blade of the panel dividing saw and the second cut or cuts are cut. e) is sawn by a second saw blade. In the case of panel dividing installations with only one sawing line, provision may be made for the panel strips to be rotated by a panel strip turning device, preferably by a turntable, following the first method section and before the start of the second method section. The Slab turning device makes it possible to perform all cuts so both the first cuts and the insert cuts as well as the second cuts with only one saw blade.

In general, it should be noted that the method not only for sawing individual plates, but in the same way for the simultaneous sawing of stacked plates so plate stacks can be used.

Fig. 1

schematisiert eine einfache, beim Stand der Technik an sich bekannte Plattenaufteilsäge;

Fig. 2 bis 4

Draufsichten auf eine zu zersägende Platte, bzw. die daraus durch Zersägen hergestellten Plattenstreifen, anhand derer die beim Stand der Technik bekannte Vorgehensweise erläutert wird;

Fig. 5 bis 7

ähnliche Draufsichten, wobei allerdings nach dem erfindungsgemäßen Verfahren vorgegangen wird;

Fig. 8

schematisiert eine Situation, bei der sich das Sägeblatt am Schnittende eines Einsatzschnittes befindet und

Fig. 9 bis 11

ein weiteres Beispiel einer Anwendung des erfindungsgemäßen Verfahrens.

Further features and details of preferred embodiments of the method according to the invention are further explained with reference to the following description of the figures. Show it:

Fig. 1

schematizes a simple, in the prior art known per se panel sizing;

Fig. 2 to 4

Top views of a plate to be sawn, or produced therefrom by sawing plate strips, by means of which the known in the prior art procedure will be explained;

Fig. 5 to 7

Similar top views, but proceeding according to the method of the invention;

Fig. 8

schematizes a situation in which the saw blade is at the cut end of an insert cut and

Fig. 9 to 11

another example of an application of the method according to the invention.

Fig. 1 shows a highly schematic side view of a simple embodiment of a panel sizing 2, which can be used for the inventive method for sawing a plate 1 or a plate stack. The panel sizing saw 2 shown has a machine table 13, which is set up by means of the machine table feet 18 on a substrate. On the machine table 13, the in Fig. 1 not shown plates 1 are placed. For sawing the plates 1, the saw blade 3 is provided. Under sawing or sawing is understood that with the saw blade 3, a plate 1 or a plate stack is severed over its entire thickness. The saw blade 3 is conveniently, as is known, lowered into the saw carriage 15 and from this in the in Fig. 1 shown Saw can be raised. The saw blade 3 may additionally be assigned a scoring saw blade 16, as shown in FIG Fig. 1 is shown schematically. With this, a surface of the plate 1 or the plate strip 5 can be scratched along the respective first cut and / or insert cut and / or second cut, before the respective first cut and / or insert cut and / or second cut is sawn with the associated saw blade 3. The scoring saw blade 16 is thus not intended to completely sever the plate 1 over its entire thickness. Rather, it serves to score or cut a groove-shaped recess in the plate whose depth is less than the thickness of the plate 1. In particular, for sawing the insert cuts discussed below, it is advantageous if the scoring saw blade 16 can be lowered independently of the saw blade 3 to which it is associated so as to bring it out of contact with the slab 1 to be sawn.

In the illustrated embodiment according to Fig. 1 For example, the saw blade 3 and the scoring saw blade 16 are raised to be brought into contact with the plate 1 to be diced or the plate stack to be diced. If they are not needed, they can be lowered into the saw carriage 15. Notwithstanding the embodiment shown in FIG Fig. 1 Of course, it is also possible that the saw blade 3 and / or the scoring saw blade 16 acts from above on the workpiece to be sawn. In this case, the saw blades 3 and 16 are lowered for sawing and raised for disengaging with the workpiece to be sawn.

In order to be able to move the saw blade 3 and the scoring saw blade 16 along a saw gap in the machine table 13 known per se, the saw carriage 15 is mounted in the guide rail 17 in the direction 23, preferably motorized. In the illustrated embodiment, the guide rail 17 is also provided as a suction device for the costs incurred in the sawing process and thrown into the saw carriage 15 sawdust. For this purpose, an exhaust 19 is arranged at one end of the channel-like running guide rail 17, which is known per se and need not be explained further.

As in Fig. 1 In addition, the illustrated panel sizing saw 2 also has a pressure bar 14, which can be lowered along the pressure bar stand 20 in the direction of the machine table 13 and lifted off again in the opposite direction. The pressure bar 14 is used, as is known, to hold down the plate 1, the plate stack or the plate strip 5 when sawing on the machine table 13, or press. As is known, a suction device for sawdust thrown upwards by the saw blade 3 can be integrated into the pressure bar 14.

Based on Fig. 2 to 4 will now be explained, as in a generic method according to the prior art for sawing at least one plate 1, for example, with the in Fig. 1 shown panel sizing 2 is proceeded. Fig. 2 shows a plan view of the plate to be sawn 1. Dashed lines indicate the Erstschnittlinien 4 along which the first cuts are performed. In the exemplary embodiment shown, the two outer first cuts or first cut lines 4 serve for trimming the plate. With the middle first cut along the middle first cut line 4, the plate 1 in the two in the 3 and 4 sawed plate strip 5 sawed. The plate strips are completely separated from each other. The respective section thus takes place along the respective first cut line 4 through the entire extent of the plate 1 in the direction of the respective first cut line 4. These first cuts can be made, for example, with the in Fig. 1 shown panel sizing 2 are performed by the saw carriage 15 is first moved once in a marginal waiting position. Subsequently, the plate 1 is placed on the machine table 13 in the desired position for the first first cut position, the pressure bar 14 is lowered and carried out the sawing process by moving the saw carriage 15 along the guide rail 17 and thus along the respective first cut line 4. In this case, both the scoring saw blade 16 and the saw blade 3 in the in Fig. 1 raised sawing position shown. If the cut is completed along the respective first cut line 4, ie the blade is cut completely, then the saw blade and scoring saw blade are lowered, the saw carriage 15 is moved to its starting position, the pressure bar 14 is raised and the plate 1 is repositioned so that it is cut along the next first cut line 4 can be. The moving and handling of the plates 1 can be carried out by operators in smaller panel sizing 2 by hand. In larger panel dividing systems known per se slide-in wagons are generally provided with grippers in the prior art, which grip the plate 1 and position following a programmable controller. If all first cuts along the first cut lines 4 are carried out in this manner, the first method section ends. One of the two plate strips 5 is brought into a waiting position. The other plate strip 5 is rotated by an angle of preferably 90 °, so that subsequently by means of the saw blade 3 and the scoring saw blade 16, the second cuts are made along the second cut lines 6, which leads to the division of the plate strips 5 in the sub-plates 7. These second cuts are also made such that the partial plates produced from the plate strips 5 are completely separated from one another along the second cut lines 6. The rotation of the plate strips 5 before sawing the second cuts, can by hand or by means of an automated slab rotary device, such as a turntable, as known in the art.

This procedure known in the prior art is unproblematic as long as the partial plates 7 obtained from a plate strip have at least one edge length in common. If this is not the case, so-called third cuts must be carried out. Such is in Fig. 3 indicated as dotted line 21. In order to carry out the third cut 21, the partial plate 7, which is initially cut too large according to the known method, must again be positioned in the panel dividing saw 2 so that the third cut along the cutting line 21 can be made. This means both a high technical and time overhead and is particularly undesirable in highly automated panel sizing.

The Fig. 5 to 7 now show a first example, as is done in a method modified according to the invention. Fig. 5 again shows a plan view of the plate 1. The 6 and 7 show plan views of the plate strips 5, which arise by sawing the plate 1 by means of Erstschnitte. The sawing along the first cutting lines 4 in the first process section is now carried out first as in the prior art and with reference to Fig. 2 explained. In addition, however, in the first process section also a so-called insert cut along the in Fig. 5 sawn insert cutting line 8 sawed. The plate 1 is completely severed on the section 9 by the saw blade 3. In contrast, the insert section ends along the insert cutting line 8 but in its cut end 11. The section 9 on which the plate 1 is sawed by means of insert cut, is thus shorter than the entire extent of the plate in the direction 10 of the insert cutting line 8. Are all Erstschnitte and Saw cuts cuts and thus the plate divided into strips 5, so in turn, the plate strip 5 are sawn in succession along the second cut lines 6 in the second process section. In the plate strip 5 according to Fig. 7 occurs no change compared to the prior art. When sawing the second cuts along the second cut lines 6 on the plate strip 5 with the insert cut along the insert cut line 8, as in Fig. 6 is shown, however, advantageously diverging from the prior art, a so-called waste strip 12 cut out by two second cuts. The waste strip 12 is cut out in the region of the plate strip 5, in which the cut end 11 of the section 9 of the insert section is located. The width of the waste strip 12 is chosen so that the cut end 11 is completely within the waste strip over its entire cut end length 22 12 is arranged. In addition, to accommodate tolerances, the width of the waste strip 12 may be selected to be slightly larger than the cut end length 22.

After all in Fig. 6 shown second cuts were performed along the second cut lines 6, the completely separate partial plates 7 are present. The limited by the insert section along the insert cutting line 8 part plate 7 already has its final format, without the known in the prior art, based on Fig. 3 explained third-cut procedure is necessary. The method according to the invention thus has the effect that, at the end of the second process section, all partial plates 7 already have their final size and no third cuts have to be performed any more. This is a considerable simplification of the division cycle of the panel sizing saw 2 and a considerable time savings.

Fig. 8 shows in a schematic side view of the saw blades 3 and 16, the machine table 13 and the plate to be sawn 1 again increases the cut end 11 at the end of the insert cutting line 8. Good to see here is that the cut end 11 due to the shape of the saw blade 3 in Direction 10 of the insert cutting line 8 is elongated over a Schnittendlänge 22. This cut end 11 should not be seen in the rule in the finished cut part plates 7. To avoid this, is, as already based on Fig. 6 explained, the waste strip 12 is provided, wherein the cut end 11 is completely within the waste strip 12 over its entire Schnittendlänge 22. The problem of Schnittendlänge 22 occurs in particular in saw blades 3 in the form of circular saw blades. But even with stitch or band saws or the like. At the end of the cut 11 usually remains a dirty area, which should no longer be visible in the finally divided part plates 7. Even with such saw blades, it may therefore be advantageous to provide corresponding waste strips 12 which receive the cut end 11 of the insert cuts. As in Fig. 8 indicated, the scoring saw blade 16, if it is present, lowered in time at the cutting end 11, while the saw blade 3 is still cutting to the cutting end 11.

The Fig. 9 to 11 show a further embodiment, as in a method according to the invention can be proceeded. Here are from the upper in Fig. 10 shown plate strips 5 are cut out three part plates 7, which do not match each other in any of their edge lengths. In order to realize this without third cuts, two are used in this embodiment in the first method section Saw cuts cut along the insert cutting lines 8 in the plate 1. Accordingly, as in Fig. 10 shown, then also sawed out two waste strips 12 by means of the second cuts along the second cut line 6.

It is clear that the embodiments shown serve only to explain the method according to the invention. Of course, numerous other formats of the partial plates 7 can be produced by the method according to the invention. In the examples shown, the first cut lines 4 and the insert cut lines 8 are each arranged parallel to one another. The same applies to the second cut lines 6, these being orthogonal to the first cut lines 4 and the insert cut lines 8. This is a common scheme. The invention is not necessarily limited thereto. It does not necessarily have to be provided that the first cut lines 4 and the insert cut lines 8 run parallel to one another. The same applies to the second cut lines 6. Moreover, the angle between the first cut lines 4 and the second cut lines 6 or between the insert cut lines 8 and the second cut lines 6 also does not necessarily have to be orthogonal. The respective cutting lines can also be arranged at different oblique angles to each other.

In the method according to the invention, the panel dividing saw 2 is preferably partially or fully automatically controlled by a programmable control or regulating device. For the sake of completeness, it should be pointed out that the method according to the invention is based not only on the in Fig. 1 schematically shown panel sizing 2 but can be performed on a variety of known panel sizing or systems. For example, it would also be possible to use this method on the in Fig. 1 to perform the AT 361700 panel splitter. However, one could do without the saws 40 and 42 and the associated conveyor belts shown there, and perform the first cuts and the insert cuts with the longitudinal saw 3 and the second cuts with the cross saw 11 of AT 361700.

Legend to the reference numbers:

1

plate

2

Panel

3

sawblade

4

Erstschnittlinie

5

plate strip

6

Second line

7

partial plates

8th

Use of cutting line

9

leg

10

direction

11

cut end

12

waste strips

13

machine table

14

pressure beam

15

saw carriage

16

Scoring saw

17

guide rail

18

Maschinentischfuß

19

suction

20

Pressure bar stand

21

third section

22

Schnittendlänge

23

directions

Claims (8)

Method for sawing at least one plate (1) with a plate dividing saw (2) with at least one saw blade (3), in particular circular saw blade, wherein the plate (1) is cut in a first method section by means of a first cut or several first cuts along a linear first cut line (4) of the First cut or a plurality of linear, in particular parallel, first cut lines (4) of the first cuts in mutually completely separate plate strips (5) is sawed and then the plate strips (5) in a second process section by means of a second cut or a plurality of second cuts along a linear second cut line (6) Second cut or more linear, in particular parallel, second cut lines (6) of the second cuts in mutually completely separate sub-plates (7) are sawed, the Erstschnittlinie (s) (4) obliquely or orthogonal to the second cut line (6) or the second cut lines (6) arranged wi (be) rd, characterized in that running while the first process section along at least a linear, preferably parallel to the (s) Erstschnittlinie (s) (4) using cutting line (8) at least one insert section is cut, wherein the plate (1 ) is sawn only on a partial section (9) which is shorter than the entire extent of the plate (1) in the direction (10) of the insert cutting line (8). A method according to claim 1, characterized in that in the first process section at one end of the subsection (9), preferably in the direction (10) of the insert cutting line (8) over a Schnittendlänge (22) elongated, cut end (11) is formed and in the second Process section with at least two second cuts at least one waste strip (12) from the plate strip (5) in which the insert section is arranged is cut out, wherein at least the cut end (11) of the sub-section (9) of the insert section completely within the waste strip (12) is. A method according to claim 1 or 2, characterized in that the plate (1) or the plate strip (5) when sawing the first cuts (s) and / or insert cuts (s) and / or second cuts (s) on a machine table ( 13) of the panel sizing saw (2), preferably by a pressure bar (14) on the machine table (13) is held down, and the saw blade (3) for sawing the first cuts (s) and / or insert cuts (s) and / or Second sections (s) of a motor-driven saw carriage (15) along the respective first cut line (4) and / or insert cut line (8) and / or second cut line (6) relative to the plate to be sawn (1) or to be sawed plate strip (5) , A method according to claim 1 or 2, characterized in that the plate (1) or the plate strip (5) when sawing the first cuts (s) and / or insert cuts (s) and / or second cuts (s) on a machine table ( 13) of the panel sizing saw (2), preferably by a pressure bar (14) on the machine table (13) is held down, and to be sawed plate (1) or to be sawed plate strip (5) for sawing the first cuts or (s) and / or insert cuts (s) and / or second cuts (s) of a motor-driven insertion carriage along the respective first cut line (4) and / or insert cut line (8) and / or second cut line (6) relative to the saw blade (3) is moved. Method according to one of Claims 1 to 4, characterized in that the plate strips (5) are rotated by a plate strip turning device, preferably by a turntable, following the first method section and before the start of the second method section. Method according to one of Claims 1 to 5, characterized in that the first cut (s) and the insert cut (s) are sawn by a first saw blade (3) of the panel dividing saw (2) and the second cut (s) is (are) sawn by a second saw blade (3). Method according to one of claims 1 to 6, characterized in that the saw blade (3) or the saw blades (3) is assigned in each case a scoring saw blade (16) of the panel dividing saw (2), with which a surface of the plate (1) or the plate strip (5) along the first cut to be cut and / or insert cut and / or second cut is scribed before the respective first cut and / or insert cut and / or second cut is sawed with the associated saw blade (3). A method according to claim 7, characterized in that the scoring saw blade (16) independently of the saw blade (3), which it is associated, is lowered or lifted at the cut end (11) of the insert section and therefore out of contact with the to be sawn board (1) is brought.

Images