EP0242763A2 - Apparatus for cutting piles of sheets - Google Patents

Abstract

A device for cutting stacked, sheet-like material has a table surface (19) with a working field (21), an input field (20) and an output field (22). A side stop (51) and a feed device (29) are also provided. A pressure slide (25) can be moved automatically in the direction of the cutting line (18) in order to press the material to be cut against the side stop (51). The effective width of the feed device (29) is smaller than the distance between the side stop (51) and the pressure slide (25). A ruler (26) running in the direction of the cutting line (18) has a limited stroke against the feed direction in order to press the material to be cut against the feed device (29). This results in improved alignment options.

Description

The invention relates to a device for cutting stacked sheet-like material, with a table surface, a working area, above which there is a cutting knife and a press beam, behind an input field for receiving the material to be cut and in front of an output field for receiving the cut material has, with a side stop for aligning the material to be cut and with a feed device for the material to be cut.

Such a cutting device is known from EP-PS 56 874. There are mainly stacks of paper, cardboard, plastic film and. Like. cut. The person skilled in the art knows that the cuts are made more precisely the better the stacked material to be cut is oriented in the transverse direction, that is to say at the side stop, and in the longitudinal direction, that is to say at the feed device. This alignment is usually done by an operator by hand performed with the help of an angular pressure element. However, this is tedious and time consuming, especially if you want to re-align before each cut.

In the cutting device according to EP-PS 56 874, automatic alignment in the longitudinal direction is already provided. To quickly remove the waste material from marginal and intermediate cuts, a gap is formed by pulling the starting area forward over the working area. Through this gap, a ruler located in its rest position below the starting field is pivoted into a vertical position, as a result of which the stacked goods reaching to the front edge of the working field are pressed against the feed device which extends across the machine width. However, since the next cut is only made after a further feed step, this alignment can sometimes be lost again.

The invention has for its object to provide a cutting device of the type described above with improved alignment options.

This object is achieved in that a pressure slide that is automatically movable in the direction of the cutting line is provided for pressing the material to be cut against the side stop and that the effective width of the feed device is smaller than the distance between the side stop and pressure slide.

Since the effective width of the feed device is shortened compared to the normal machine width, the pressure slide can remain approximately in place without colliding with the feed device. The working distances of the pressure slide and its operating time are correspondingly short. Since it is actuated automatically, the time interval up to the subsequent cut can also be kept small. Overall, there is a transverse alignment with a minimum of time. It is therefore not difficult to carry out this alignment before each cut.

Interchangeable feed devices of different widths can be provided to adapt to different widths of the material to be cut. However, it is much cheaper if the feed device is divided into individual segments in the direction of the cutting line, the feed function of which can be rendered ineffective at least over part of the cutting knife width. By making the feed function effective for a more or less large number of segments, the effective width of the feed device can be adapted to the particular circumstances.

It is particularly favorable that the segments can be moved from an operating position in which they take the material to be cut into an ineffective position. In the inactive position, the segments are lifted off the table surface of the cutting device and therefore do not collide with the pressure slide. Here, the segments can be pivoted up and back about a horizontal axis located behind them in the working position. However, there are also other ways of rendering the feed function ineffective, for example by uncoupling the ineffective segments from the feed drive.

In the case of a cutting device in which the feed device has teeth which engage in the foremost position in the grooves of the press beam, it is recommended that the segments have a pitch corresponding to the tooth pitch. The segments can then be identical to one another; be carried out. The respective effective width range of the feed device interacts with the press beam in the same way as was previously the case for the entire feed device.

The pressure slide is expediently located above the working area behind the pressure beam effective level. In this position, it is located close to the cutting line so that the alignment takes place in the cutting area.

For particularly high demands, it is recommended that the pressure slide can be moved first under the pressure beam and then in the pressure direction when the pressure beam is raised. In this way, the pressure slide can be brought even closer to the cutting line.

In a preferred embodiment, behind the pressure slide there is a feed path for the material to be cut which runs transverse to the feed direction. The material can therefore be fed in without colliding with the pressure slide.

In particular, the input field can be formed by a transport plate which can be moved transversely to the feed direction. The stacked goods to be cut can already be transported on this transport plate with a certain pre-alignment. It can plate until it abuts against the side stop are guided with the help of transport _i, where a certain basic orientation results.

The feeding of the material in the transverse direction and the reduced effective width of the feed device have the further advantage that not all of the material to be cut, which is located on the input field, has to be cut, but that - if this material is present, for example, in block strips arranged next to one another - One or a few block strips can be advanced and cut. In this case, a holding-down device extending in the feed direction is expediently provided behind the pressure slide. This then holds the adjacent block strips in place when the block strips are advanced. With this hold-down device there is also no risk of a collision with the feed device.

Advantageously, the feed device can be lifted overall and can be returned to the rear in the raised state. In this way, new goods can already be brought to the side stop via the feed path, while the feed device is returned to the starting position, because the feed device can be moved over the new goods.

The side stop can expediently be raised for the passage of the transport plate. This makes it possible to move the transport plate under the side stop as far as is necessary for the delivery of the entire stacked goods.

In a preferred embodiment it is ensured that in the area of the cutter bar a filler piece of the side stop can be moved downwards with the cutter bar and _{1 can be} lowered to below the table surface during the feed movement. The filler of the side stop is available Available if the goods are aligned transversely using the pressure slide. Since the filler piece sinks to below the table surface, the stacks of cut goods are not hindered when they are removed from the work area to the front. Especially with smaller labels u. The like. The stack shape is preserved better than before.

Another solution to the problem posed, which can also be used simultaneously with the first solution, is characterized according to the invention by a ruler running in the direction of the cutting line and arranged on the starting field, which has a limited stroke counter to the feed direction in order to counter the material to be cut to push the feed device.

Since the ruler is on the starting area, it can be placed at a distance from the working area. It is therefore possible to carry out the longitudinal alignment after the feed device has pushed the material to be cut into the position intended for the cut. The longitudinal alignment, like the transverse alignment, can therefore take place immediately before each cut. The arrangement of the ruler on the starting field can also be used for further advantageous purposes.

So it is recommended that the ruler can be tilted about a lower horizontal axis in order to support the stack of cut material during cutting and then to straighten it up again. Relatively high stacks of small labels or the like can therefore be handled safely. Hold-down elements can also be attached to the ruler, which lie resiliently on the material to be cut. This is of advantage, for example, if the sheet-like material is somewhat brittle and therefore tends to jump off when cutting.

If the exit field can be moved relative to the work area to form a gap, a transverse channel leading to a further processing point on the exit field is recommended, which is formed by a first ruler mounted on the exit field and a second ruler behind it, which opens after opening the gap in his working position is feasible, and an ejector that is movable along the transverse channel. In this way, the stack or stacks, in particular also those with a relatively small sheet size, can be carried on, for example, to a punching device or an automatic bundling machine.

In particular, the second ruler can be arranged in its rest position under the starting field and can be brought into its working position through the gap.

Here, the second ruler can be provided with a squeegee and controlled so that it wipes along the knife bar when it moves upwards. This removes paper residues.

It is recommended that the squeegee be slid in the working position towards the inclined surface of the cutter bar. This sliding movement allows stripping to take place over the entire sloping surface.

Advantageously, the segments of the feed device and / or the side stop and / or the pressure slide have vertically movable sliding fingers seated on the table surface. This ensures that, despite the various movements of the parts mentioned, there is always contact with the table surface, so that the goods are gripped down to the bottom sheet of the stack.

The use of the cutting device as a second cutting device of a system in which a first cutting device is designed for the production of block strips by parallel cuts is particularly advantageous, in the second cutting device only a partial number of the effective segments of a number of block strips arranged next to one another in the direction of the cutting line the feed device can be taken along. The use of two cutting devices, each of which is designed for one function, namely longitudinal cutting for producing the block strips, and cross cutting of these block strips, results in very efficient production. The second cutting device works practically fully automatically and therefore very quickly. The transverse cutting of the block strips can thus take place in approximately the same time as the manual longitudinal cutting of these block strips in the first cutting device. This does not exclude that the block strips are also supplied to the second cutting device by a plurality of first cutting devices, or conversely the block strips of a first cutting device are supplied to more than one second cutting device.

• Fig. 1 eine Draufsicht auf ein Schneidsystem mit der erfindungsgemäßen Schneidvorrichtung,
• Fig. 2 eine Seitenansicht der Vorschubeinrichtung,
• Fig. 3 eine Teilansicht der Vorschubeinrichtung von hinten,
• Fig. 4 einen Horizontalschnitt durch die in den Preßbalken eingreifende Vorschubeinrichtung,
• Fig. 5 eine schematische Ansicht der Schneidvorrichtung von hinten, wobei die Vorschubeinrichtung entfernt ist,
• Fig. 6 einen schematischen Vertikalschnitt durch den Arbeitsbereich der Schneidvorrichtung,
• Fig. 7 einen vergrößerten Schnitt durch den Bereich der Bewegungsbahn des Schneidmessers,
• Fig. 8 bis 18 den Arbeitsbereich der Schneidvorrichtung in einzelnen Arbeitphasen.

The invention is explained below with reference to a preferred embodiment shown in the drawing. Show it:

• 1 is a plan view of a cutting system with the cutting device according to the invention,
• 2 is a side view of the feed device,
• 3 is a partial view of the feed device from behind,
• 4 shows a horizontal section through the feed device engaging in the press beam,
• 5 shows a schematic view of the cutting device from the rear, with the feed device removed,
• 6 shows a schematic vertical section through the working area of the cutting device,
• 7 shows an enlarged section through the region of the movement path of the cutting knife,
• 8 to 18 the working area of the cutting device in individual work phases.

1 shows a first cutting device 1 in the form of a face cutting machine with an indicated cutting line 2. Here, block strips 4 are separated from stacks 3 of large-area sheet material, the stacks 3 being aligned in the usual way on a side stop 5 and being advanced step by step by a feed device 6.

The block strips 4 are collected at a loading and pre-alignment station 7 on a transport plate 8. At the edges there are two stops 9 and 10 running perpendicular to each other, with the aid of which the block strips 4 can be placed perfectly aligned next to one another on the transport plate 8. The loaded transport plate 8 can then be moved to the right in FIG. 1 after the stop 9 has been moved away by a small amount and the stop 10 has been moved down or up.

The loaded transport plate 8 arrives at a transfer station 11. This has a buffer shelf 12 with a plurality of levels 13 arranged one above the other (FIG. 5), which can each be raised to the working height with the aid of a lifting device 14. Each floor has at least two guide rails 15 and 16 and, if appropriate, further support means, such as rollers. The transfer station 11 is formed by the level 13 located at the working height.

The transfer station 11 connects directly to a second cutting device 17, the cutting line 18 of which is again indicated by dash-dotted lines in FIG. 1. This cutting device has a table surface 19 made of; an input field 20, a working field 21 and an output field 22. The input field 20, which roughly comprises the area B1, is formed by a transport plate 8 in each case. The working area 21, which roughly comprises the area B2, is located below a cutter bar 23, a pressure bar 24 (FIG. 7) and a pressure slide 25. The exit area 22, which is located above can extend the area B3, serves to receive the finished cut stacks. On it there is a ruler 26 also used for alignment. On one side of the exit field 22 there is an automatic bundling machine 27 for packaging the finished stacks and on the other hand an automatic punching machine 28 for further processing of the stacks. These machines can be used optionally.

The cutting device 17 has a feed device 29 which is composed of individual segments 30. These segments 30 each sit on a lever arm 31 which is pivotable about a rear axis 32. They can therefore be shifted from an effective position (fully extended in Fig. 2), in which they sit on the table surface 19, to an ineffective position (dash-dotted lines in Fig. 2), in which they are out of engagement with the table surface and the one located thereon Are stacked. The pivoting is done by hand, but can also be carried out automatically by suitable drive means, for example servomotors.

Each segment 30 can have a sliding finger 33 which is guided vertically in the segment and is in contact with the table surface 19 due to its weight. The press beam 24 has grooves 34, in which the feed device 29 engages with teeth 35 in its foremost position. The division of the segments 30 corresponds to the tooth division (FIG. 4).

The feed device 29 is attached to a first carriage 36 which can be displaced in the vertical direction on a carriage 37. The second carriage 37 can be moved in the longitudinal direction on a machine-fixed guide 38. The displacement movement takes place in a known manner with the help of motors, not shown, and can be carried out fully automatically in accordance with a previously entered programming.

In the area of the input field 20, the cutting device 17 has a guide track 39 which has two guides 40 and 41 for the transport plate 8 and further support rails 42. A coupling piece 43 can engage in a recess on the underside of the transport plate 8 and pull it out of the transfer station 11 onto the cutting device 17. For this purpose, the coupling piece 43 is pivotally held in a housing 44, which is fastened to a chain 45, by means of a servomotor. This runs over a drive wheel 46, which is driven by a motor 47, and a deflection wheel 48. In order that the transport plate 8 can be moved over the guide rail 15, a lowering device 49 is provided, which consists of a pneumatic or hydraulic piston-cylinder unit with a plunger 50, which depresses the guide rail 15.

The cutting device 17 is provided with a side stop 51, to which a proximity initiator 52 is assigned. As soon as the end face of the first block strip approaches this side stop 51, the proximity initiator 52 responds and switches off the motor 47. The block strips 4 therefore come in the immediate vicinity or in System at side stop 51 to rest. The side stop 51 can be raised by means of an inclined surface 8a on the front channel of the transport plate 8, so that the transport plate 8 can be moved under the side stop. If the feed device 29 is now activated, only the active segments 30 take the stacked goods in front of them, in the present exemplary embodiment only three block strips 4 Servomotors 53 moved several times against the feed direction in order to align the block strips 4 in the longitudinal direction, that is to say on the active segments 30 of the feed device 29. In addition, the pressure slide 25, which is also provided with sliding fingers 54, is moved parallel to the cutting line 18 in order to press the advanced block strips 4 against the side stop 51 and thereby effect a transverse alignment. Before this pressure movement, the pressure slide 25 can be moved closer to the cutting line 18 under the pressure beam 24, as is illustrated by the broken line in FIG. 1. The distance between the side stop 51 and the pressure slide 25 is smaller than the effective width of the feed device 29.

The pressure slide 25 is actuated in the transverse direction by a servomotor 55, which in turn can be displaced in the feed direction with the aid of a servomotor 56. This is connected to a carriage 58 which can be moved along a machine-fixed transverse guide 59.

The pressure movement of the ruler 26 or the pressure slide 25 can be carried out several times in succession if the nature of the material to be cut requires it. The active surface of these pressure elements can be provided with an elastic pad.

A hold-down device 60 is fastened to the same carriage 58 and can be shifted and loaded vertically with the aid of a servomotor 61. It is pressed down on the first of the block strips 4a not to be displaced before the first feed movement of the feed device 29, so that the alignment of these block strips achieved in the loading and aligning station 7 is maintained.

The rendered ineffective segments 30 of the feed device 29 have such a high position or are displaced so far to the rear that they do not collide with the pressure slide 25 nor with the hold-down device 60 and the associated drives.

In order for the cutter bar 23 to be able to carry out its working stroke, the side stop 51 is interrupted, the gap being filled by a filler piece 62 so that a correct alignment in the transverse direction is possible. This filler 62 can be lowered with the knife bar 23 from the position 62a shown in full lines in FIG. 7 with the knife bar 23 into the position 62b shown in broken lines. It prevents the cutting knife, which has a component of movement in the direction of the cutting line, from taking the stack that has just been cut laterally. After the cut, the filler is inserted further into the dotted position 62c lowered, in which it is located completely below the table surface 19. In this way, the filler does not hinder the removal of the stack just cut, even if it consists only of sheets of very small size. The movement of the filler 62 is effected by a servomotor 63.

As shown in FIG. 6, an ejector 64 can be lowered into a transverse channel 66 by means of a servomotor 65. The whole is fastened to a slide 67 which can be moved by a motor along a transverse guide 68 fixed to the machine. The transverse channel is delimited by the ruler 26 and by a second ruler 69. This second ruler moves into the position illustrated in FIG. 6 when the table top 70 forming the output field 22 has been advanced into the position shown in dashed lines in FIG. 1 to create a gap 73 between it and the working field 21, as in connection with this is explained in more detail with FIGS. 1 to 18. The finished stack can then be fed fully automatically to the bundling machine 27 or the punching machine 28 through the transverse channel 66.

The sequence of the individual movements in connection with the cutting process is explained in more detail with reference to FIGS. 8 to 18.

8, a block strip 4 is pressed by the ruler 26 against the segments 30 of the feed device 29, this ruler executing a movement in the direction of the arrow a from the dash-dotted position, possibly several times in succession. Shortly thereafter, the transverse alignment takes place with the aid of the pressure slide 25. Then the press beam 24, which is not illustrated here, is pressed down.

9, the section follows with the aid of the knife bar 23 moving in the direction of arrow b. At the same time, the ruler 26 is moved back in the direction of arrow c to the position shown in broken lines in FIG. 8 and about a lower horizontal axis in Tilted in the direction of arrow d.

If the cut according to FIG. 10 has now been carried out, a stack 71 results which, owing to the shape of the knife bar, assumes a parallelogram-shaped cross section. It is supported by the ruler 26.

11, the table top 70 is raised by the amount x, for example 1 mm, from the height of the cutting bar 72 below the cutter bar 23. This will safely separate the bottom sheet from this cutting bar.

The table top 70 is now advanced according to FIG. 12 to form a gap 73 in the direction of the arrow e. At the same time, the ruler 69, which had assumed a rest position below the table top 70, tilts upward in the direction of the arrow f. In addition, the ruler 26 tilts back into the vertical position in the direction of the arrow g. As a result, the stack 71 is erected.

13, the ejector 64 lowers in the direction of the arrow h into the transverse channel 27 formed between the rulers 69 and 26. Here, the ruler 26 can be slightly lifted off the stack 71 in the direction of the arrow i. The stack 71 can then be automatically fed to the automatic bundling machine 27 or the automatic punching machine 28.

Now it is assumed that an intermediate cut should not be made, but an intermediate cut. The segments 30 are moved in the direction of the arrow k and push the block strips 4 forward by the thickness of the intermediate cut (FIG. 14).

If, as shown in FIG. 15, the cutter bar 23 is again moved downward in the direction of the arrow b, the material 74 which has been separated falls down through the gap 73, preferably into a collecting container located there. At the same time, the ruler 69 has been tilted into a position approximately perpendicular to the inclined surface 75 of the cutter bar 23 and a squeegee 76 has been moved in the direction of arrow 1 against this inclined surface 75 with the aid of a servomotor 77.

As a result, all of the separated material 74 is securely stripped from the inclined surface 75 of the cutter bar and the knife when the cutter bar 23 moves up again (FIG. 16). _-

There is a further feed movement of the block strip 4 with the aid of the segments 30 in the direction of the arrow k, so that the rest of the separated material 74 falls through the gap 73. The ruler 69 returns to its rest position (FIG. 17) and the table top 70 closes the gap 73 (FIG. 18).

A new work cycle can now begin, in which the segments 30 advance the block strips again into the vicinity of the ruler 26. A new alignment process follows, a new cut and so on.

If the first block strip 4 - or in the present exemplary embodiment the first three block strips - have been divided into small stacks 72 in this way, the motor 47 is excited again so that the transport plate 8 advances further to the left in FIG. 5. As soon as the end face of the block strip 4a is detected by the proximity initiator 52, the transport plate 8 stops and a new feed can be carried out with the aid of the feed device 29. For this purpose, the feed device must be returned to the rest position illustrated in FIG. 1. This can take place before the transport plate 8 is moved further or simultaneously with it, namely when the feed device 29 is raised in its front position with the aid of the carriage 27 and moved back over the block strips into the starting position. Then a new feed takes place by means of the feed device 29. This work cycle is repeated until all block strips have been processed. The transport plate 8 can then be transported back to an empty floor of the buffer shelf 12 with the aid of the coupling piece 44.

The second cutting device 17 and the feed arrangement with the transport plate 8 can be operated largely automatically. As a result, a single operator is sufficient for the production of labels, who produces the block strips 4 on the cutting device 1, places them correctly on the loading and aligning station 7 and otherwise only monitors the automatic process of the system.

There can be deviations from the described embodiment in many respects without departing from the basic idea of the invention. For example, the empty transport plates 8 on the side of the input field 20 facing away from the transfer station 11 can be removed.

If brittle stacked goods are to be cut, the ruler 26 can additionally carry resilient hold-down elements 78, as shown in FIG. 9. In this way it can be ensured, even in the case of brittle sheet material, that the individual sheets do not jump away. If the hold-down elements 78 are not required, they can be folded away (FIG. 10). Furthermore, the ruler 26 can be provided with a proximity initiator 79 (FIG. 18), which responds when the front side 80 of the block strip 4 comes closer to the ruler 26 than corresponds to a predetermined limit distance. In this case, the feed device 29 is switched off in order to avoid incorrect operation. In addition, the feed device can be provided with a slip clutch, which responds when the block strips 4 find resistance during the feed.

The servomotors required for the automatic process are shown here as pneumatic or hydraulic piston-cylinder units. The servomotors can also be operated mechanically, electrically or in any other known manner.

Claims (22)

1.Device for cutting stacked, sheet-like material, with a table surface which has a working area above which there is a cutting knife and a press beam, an input field for receiving the material to be cut and an output field for receiving the cut material a side stop for aligning the good to be cut and with a feed device for the good to be cut, characterized in that for pressing the good to be cut (4) on the side stop (51) a pressure slide (24) which can be moved automatically in the direction of the cutting line (18) ) is provided and that the effective width of the feed device (29) is smaller than the distance between the side stop and the pressure slide. 2. Device according to claim 1, characterized in that the feed device (29) in the direction of the cutting line (18) is divided into individual segments (30), the feed function of which is ineffective at least over part of the cutting knife width. 3. Apparatus according to claim 1 or 2, characterized in that the segments (30) from a working position in which they take the material to be cut (4) can be moved to an ineffective position. 4. The device according to claim 3, characterized in that the segments (30) about a horizontal axis in the working position behind them (32) are pivotable upwards and backwards. 5. Device according to one of claims 1 to 4, in which the feed device has teeth which engage in the foremost position in grooves of the press beam, characterized in that the segments (30) have a pitch corresponding to the tooth pitch. 6. Device according to one of claims 1 to 5, characterized in that the pressure slide (25) is located above the working field (21) behind the pressure beam effective plane. 7. The device according to claim 6, characterized in that the pressure slide (25) when the pressure beam (24) is raised first under this and then movable in the pressure direction. 8. Device according to one of claims 1 to 7, characterized in that behind the pressure slide (25) is a transverse to the feed direction feed path (39) for the material to be cut. 9. The device according to claim 8, characterized in that the input field (20) is formed by a transport plate (8) movable transversely to the feed direction. 10. Device according to one of claims 1 to 9, characterized in that a holding-down device (60) extending in the feed direction is provided behind the pressure slide (25). ; 11. Device according to one of claims 1 to 10, characterized in that the feed device (29) can be lifted overall and can be returned to the rear in the raised state. 12. Device according to one of claims 9 to 11, characterized in that the side stop (51) for the passage of the transport plate (8) can be raised. 13. Device according to one of claims 1 to 12, characterized in that in the region of the cutter bar (23) a filler (62) of the side stop (51) with the cutter bar (23) can be moved downward and during the feed movement up to below the table surface (19 ) can be lowered. 14. Device for cutting stacked sheet-like material with a table surface which has a working field above which a cutting knife and a press beam are located, an input field for receiving the material to be cut and an output field for receiving the cut material a side stop for aligning the material to be cut and with a feed device for the material to be cut, in particular according to one of claims 1 to 13, characterized by a ruler (26) arranged in the direction of the cutting line (18) and arranged on the output field (22) , which has a limited stroke against the feed direction, to press the material (4) to be cut against the feed device. 15. The apparatus according to claim 14, characterized in that the ruler (26) can be tilted about a lower horizontal axis in order to support the stack (71) of the cut material during cutting and then to raise it upright again. 16. The apparatus of claim 14 or 15, characterized in that hold-down elements (78) are attached to the ruler (26) which resiliently lay on the material to be cut. 17. The device according to any one of claims 1 to 16, wherein the output field is movable relative to the working field with the formation of a gap, characterized by a transverse channel (66) leading to a further processing point (27, 28) on the output field (22) which a first ruler (26) mounted on the exit field and a second ruler (69) located behind it are formed, which can be brought into its working position after opening of the gap (73), and by an ejector (64) which is movable along the transverse channel is. 18. The apparatus according to claim 17, characterized in that the second ruler (69) is arranged in its rest position under the starting field (22) and can be brought into its working position through the gap (73). 19. The apparatus according to claim 18, characterized in that the second ruler (69) is provided with a squeegee (76) and is controlled so that it wipes along the knife bar (23) during the upward movement thereof. 20. The apparatus according to claim 19, characterized in that the squeegee (76) in the working position in the direction of the inclined surface (75) of the cutter bar (23) is displaceable. 21. Device according to one of claims 1 to 20, characterized in that the segments (30) of the feed device (29) and / or the side stop (51) and / or the pressure slide (25) vertically movable and on the table surface sliding finger ( 33, 54). 22. Device according to one of claims 1 to 21, characterized by the use as a second cutting device (17) of a system in which a first cutting device (1) is designed for the production of block strips (4) by parallel cuts, in the second cutting device (17) of a number of block strips arranged next to one another in the direction of the cutting line (18), only a partial number of the active segments (30) of the feed device (29) can be taken away.

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