EP1018408A1 - Guillotine-type machine for cutting stacked sheet material - Google Patents

Abstract

The planar cutting machine has a table (3) for supporting the stacked sheet material, divided into a rear section (5) supporting the residual sheet stack and a relatively movable front section (9) for receiving the cut section of the sheet stack, located between a pair of cooperating rails, with a cooperating feed slide (67) used for transfer of the cut sheet stack to a further proicessing station. One of the latter rails is provided by a mobile alignment station (22), attached to the planar cutting machine adjacent the table front section.

Description

The invention relates to a face cutting machine for cutting of stacked, sheet-shaped goods according to the preamble of Claim 1.

Such a face cutting machine is known from EP-A-0 242 763 known. This forms with another face cutting machine an arrangement that enables a large exit stack to divide into small piles. With the first face cutting machine the necessary margin cuts on Made stack, after which this is present as the starting stack, the machine also divides the initial stack in partial stacks. These are collected on a pad and the second face cutting machine, which according to the Preamble of claim 1 is formed, supplied, this second face cutting machine perpendicular to the former Face cutting machine is arranged. In this second Cutting machine, the partial stacks are cut into each cut small stacks arranged in a row. Related to the The direction of feed of the goods is in front of the partial stacks, thus in Area of the front table part arranged the first ruler and it is in the between the front and rear table parts formed gap, adjacent to the rear end of the front Part of the table, the second ruler can be inserted. The two rulers form the cross channel between them, which is the small stack records that by means of an ejector to a processing station can be supplied. This is it for example, a bundling machine or a label punch. - The purpose of the arrangement described above is perform the cutting process largely fully automatically can. Because the edge trimming and cutting the initial stack in the first direction by means of the first face cutting machine the second face cutting machine only comes Task to separate the material to be cut in the second direction. It is not necessary to do this in the area of the to handle the front part of the table. It is only necessary to provide suitable means so that with each cut accumulating partial stacks are precisely conveyed to the side can. To achieve this, the first is on the starting field Ruler arranged that permanently assigned to the starting field is. The first ruler is provided with drive means that it allow the ruler with a limited stroke against the To move the feed direction to the material to be cut against the Press feed device. Furthermore, drive means for Tilt the first ruler around a lower horizontal axis provided so that the partial stack when generating the small Stack supported and then erected vertically again can be.

EP-A-0 453 933 discloses a face cutting machine for cutting described narrow small stack of sheets. With this face cutting machine can only stack with constant dimensions, seen in the feed direction of the goods. For this is an L-shaped element to accommodate the cut small stack provided. The lower leg of the L-shaped Element reaches under the small stacks during the other leg serves as a side support for the stack. The L-shaped Element can be moved horizontally and swiveled in a front table part of the face cutting machine, which but does not serve to hold the cut material. This storage of the L-shaped element serves the purpose of Cut through the partial stacks using the wedge-shaped knife and so that the formation is initially shifted in a parallelogram shape small stack tipping the L-shaped element understand, the front edge of the L-shaped Element remains in one plane with the table surface.

EP-A-0 056 874 describes a face cutting machine for cutting of stacked, leaf-shaped well-known that a table for receiving the goods, with a rear table part the receiving of the material to be cut and a front table part serves to pick up the cut material. Below the Tables in the area of the interface between the front and rear The table cutting machine has a ruler on the table section. This is against when a gap is formed between the two table parts the rear edge of the front part of the table moves so as to the last cut stacks of cut material, which are the result of Arrangement of the cutting bar of the face cutting machine slightly protrude beyond the rear edge of the front part of the table, completely to slide on this. The ruler is also used in this position as a splash guard when performing a Intermediate cut, in which the cutting waste through the gap to be disposed of down. - With such a cutting machine there is no automatic procedure, based on the cut to create the small stacks and forward them to a processing station.

The object of the present invention is a face cutting machine according to the preamble of claim 1 so on form that not only with one and the same cutting machine the cuts to create the partial stacks and the small ones Stacks, but also the small stacks automatically for further processing can be supplied.

The task is solved by a face cutting machine with the Features of claim 1.

It is essential in the present invention that only if the front table part is needed for work processes that Mobile straightening station is used to stack the small to be able to cut and remove safely, especially for Processing station. The invention is based on the basic Concept of specifying a face cutting machine at the can be done by hand, but it still allows the more detrimental effects of manual work at Automated cutting through particularly simple changeover processes to be able to perform. So if the mobile straightening station, which takes up the first ruler, not the front part of the table is assigned manually in the entire area of the table, thus worked in the area of the rear and front part of the table become. This is particularly advantageous for edge trimming, if the stack of cut material is available in large format and for Turning of the person working on the face cutting machine, in particular be handled in the area of the front part of the table got to. In this way, the worker pulls the stack of material to be cut after an edge cut forward, that is, in the area of the front Table part, rotates it 90 ° or 180 ° and pushes it back on the rear part of the table, against the feed device, the advances the stack of material to be cut by the exact cutting dimension. First if the original stack according to the margin cuts in one direction is divided into partial stacks and these by 90 ° were rotated to then put them into the small piles the mobile straightening station is used. she will connected to the device in the area of the front table part, so that the first ruler has the function of aligning and Supporting the partial stacks or small stacks when cutting can take over. The cut small stacks are cut through the cross channel formed between the two rulers conveyed away. This is preferably done using an ejector.

Basically, the mobile straightening station can be at any suitable Place the face cutting machine in the area of the front part of the table be connected to the face cutting machine, thus for example on the one that extends above the table Portal frame of the face cutting machine, which is also the. Includes the cutting knife and the press beam. According to is a special embodiment of the invention provided that the mobile straightening station with the front Table part is connectable. The advantage is that by means of of the front part of the table in an easy way an exact Positioning the mobile straightening station is possible and special simply a connection between the mobile straightening station and the front table part can be manufactured. Except of this, the mobile straightening station can be easily adjusted to the front part of the table. In this sense it is called considered appropriate if next to the front part of the table Lateral table part is arranged, which is the inclusion of the mobile straightening station is used when not in use. Educate the Surfaces of the front and side table part one level, the mobile straightening station can easily be between the two Moving table parts back and forth. The high mobility of the Straightening station is a basic requirement at the Wafer cutting machine according to the invention, since during the insertion Cutting cycles the straightening station needs on the one hand, on the other hand is not used or the area of the front table must be exempt from the mobile straightening station.

According to a preferred embodiment, it is provided that side table part can be raised and lowered, and two on top of each other arranged table levels, the lower Table level of the mobile rich station when not in use serves, further the upper table level when lowered side table part and the lower table level when raised side table part one level with the surface of the form the front part of the table. This design of the side The table section enables the mobile straightening station to be used when not in use below the working level of the side part of the table to position. Especially when cutting the output stacks in the first cutting direction to form the partial stack is the working surface for the person working on the face cutting machine of the side table part for storing or for temporary storage the partial stack is available and is not due to the Mobile straightening station not required during this work sequence busy. If the mobile straightening station is needed, the side part of the table with the one on the lower table level resting mobile straightening station raised and in the raised Position of the side table part the mobile straightening station the front part of the table moved or moved. If the Work surface of the side table part during the subsequent work sequences is required, the side Table part lowered again, so that its upper table level again aligned with the table level of the front part of the table.

To move the mobile straightening station particularly easily should it have wheels or rollers on its underside exhibit.

It must be ensured that the mobile straightening station is in its Working position a defined position to the front part of the table takes and during the relevant work processes too maintains, especially in the vertical position of the first Rulers parallel to the cutting plane of the cutting knife is guaranteed. A safe arrangement of the mobile straightening station on the front part of the table, for example be accomplished that the mobile straightening station on their Bottom and / or side with by means of vacuum and / or magnetically active elements is provided, which is in operative connection with the front part of the table and / or in the area of the Front table part arranged side stop can be brought. As an alternative or in addition to this, it is conceivable to use the mobile Straightening station with the front part of the table and / or a side stop arranged in the area of the front table part connect to. With a positive connection understood one that prevents the mobile Move the straightening station in the table level of the front part of the table can. According to a specific design, it is provided that the mobile straightening station is provided with positioning elements, the in operative position with complementary positioning elements of the front table part can be brought. To be particularly advantageous it is considered if the positioning elements of the mobile Straightening station as centering bolt and the complementary positioning elements of the front part of the table as centering fixtures are trained. The interacting centering bolts and Centering shots allow the shooting position of the mobile Straightening station in the front part of the table to change in the sense that an absolute parallelism between the vertical first ruler and the cutting plane is guaranteed. It is in particular provided that several pairs of complementary Positioning elements at different vertical distances are arranged to the cutting plane in the front part of the table. This Training of the face cutting machine is particularly of then Advantage when using the machine in a so-called mixed production to be cut. This means that after the Cut the small stacks with a possibly small one Small stacks can be cut in the direction of advance must have a greater extension in the feed direction. This You can work by simply moving the mobile straightening station perpendicular to the cutting plane. Could the mobile straightening station is not on the front part of the table would result in cutting in mixed operation, that large travels are made with the first ruler ought to. Instead, the described must be advantageous The ruler should only be designed for short travel distances, which also under the aspect of precise alignment of the ruler with regard to the components of the mobile straightening station receiving these and the alignment with respect to the front part of the table is an advantage.

It is considered appropriate if the feed device and / or the first ruler with movable side feeders are provided. This enables the rotated partial stack between one or more moveable investors and one to fix the stationary side feeder of the rear table section. This is usually done before or during the cut in the second Direction and is particularly advantageous if narrow benefits are cut. This ensures that the narrow benefits are aligned exactly parallel to each other and the partial stack assigned to the stationary side feeder lies flat against this. The feeder side feeder should also be in the feed direction and be movable in opposite directions. This enables the side feeder the feed device from the front, as a rule area of the feed device designed as a rake is moved become. The feed device can be advanced very far be, the feed rake with a facing computing section of the press bar of the cutting machine.

When cutting the small stacks from the partial stacks or when Intermediate cut, especially in connection with disposal the cutting waste through the gap, the first ruler has diverse Carry out movements, in particular movements of the material to be cut understand. So the ruler is around the feed dimension Generation of the small stack, the feed dimension to compensate for the Swivel movement of the ruler and the feed dimension of the intermediate cut movable.

To make the movements of the first ruler particularly easy To be able to accomplish is according to a preferred embodiment the invention provided that the mobile straightening station on the top with units for moving Recording the first ruler is provided. Here is the first The ruler can be swiveled around a horizontal axis thus runs parallel to the table level of the front part of the table. It is considered structurally appropriate if the mobile Straightening station a base element, in particular a plate-shaped Has base element in which the first ruler can be moved and is pivotally mounted. The base element takes for example a bearing element, which by means of at least one Actuator is movable, is also in the bearing element first ruler stored by at least one other Control element is pivotable. The straight-line movement and the pivoting movement of the ruler are thus kinematic are separated and consequently by means of different Controls accomplished. It will be advantageous viewed when the ruler is around its lower end an axis on the bearing element side is pivotable, as well as the upper one End of the ruler supported by a toggle lever in the bearing element is, the further actuating element on the toggle lever and the bearing element attacks. The ones intended for moving the first ruler Control elements are, for example, as electrical servomotors or pneumatic cylinder. In addition, should pneumatic and / or electrical control means for actuation the control elements for the first ruler and / or the elements for the connection of mobile straightening stations and the front part of the table be provided. The electrical control means can can be effective wirelessly, especially control means be provided on an infrared basis.

The above measures allow the first ruler, because it is a mobile component to be installed acts, defined with respect to the front part of the table or the position the part stack to be cut and the sequence of movements, which are to be accomplished by the first ruler guarantee. For example, the ruler when installing be positioned against the partial stack to be cut. Especially when the first ruler is installed against which are arranged with their front surfaces in the cutting plane Positioning the partial stack ensures that the ruler a defined, predetermined level, namely the cutting level assigned to the knife. Coordinates of movement of the first rulers can thus be placed in relation to the cutting plane become. On the other hand, there is a variable allocation of the investment area of the first ruler to the cutting plane possible. This means, that the contact plane of the first ruler in any Distance to the cutting plane is positioned and the position of the Rulers, in particular its position to the cutting plane, by means of electronics is detected. The electronics thus determine especially how far the vertically positioned investment level of the ruler is removed from the cutting plane and taken into account this with the current cutting process. Is from the prior art it is known to position machine parts with respect to the To determine and display the cutting plane using electronics, for example the position of the feed saddle Cutting machine with respect to the cutting plane. Will the mobile Straightening station over the positioning elements with the front one Connected table part, the position of the straightening station results regarding the table part directly and can be done via the electronics be evaluated. By means of the control means, especially the electronics, especially the control elements for the first ruler depending on the particular one Cutting sequence can be positioned. Preferably the Electronics the lowering movement of the cutting knife and controls it Actuator for pivoting the first ruler according to the Passage of the wedge-shaped cutting knife through the Cutting pile. Is superimposed or subsequently follows slight horizontal movement of the first ruler from the Cutting plane away to shift the parallelogram shifted small stack completely on the front part of the table to reach when the second ruler, aligned vertically, completely to the rear edge of the front part of the table creates. This is done with a vertically arranged second ruler Tilt the first ruler in its vertical position.

Further features of the face cutting machine according to the invention are in the description of the figures, the figures and in the subclaims shown, it being noted that all individual features and all combinations of individual features essential to the invention are.

Figur 1

eine Draufsicht einer ersten Ausführungsform der Planschneidmaschine mit auf einem Seitentisch plazierter, in Nichtgebrauchsstellung befindlicher mobiler Richtstation sowie mit einem auf dem hintreen Tischteil ruhenden Schneidgutstapel vor dem Randbeschnitt,

Figur 2

eine Darstellung gemäß Figur 1 mit auf dem hinteren Tischteil ruhenden Schneidgutstapel nach dem Randbeschnitt, somit den auf dem hinteren Tischteil ruhenden Ausgangsstapel, vor dem Schneiden von Teilstapeln in einer ersten Richtung,

Figur 3

eine Ansicht gemäß Figur 2 mit den auf dem hinteren Tischteil ruhenden um 90° gedrehten Teilstapeln, vor dem Schneiden in der zweiten Richtung,

Figur 4

die Planschneidmaschine gemäß Figur 3 mit auf dem vorderen Tischteil plazierter mobiler Richtstation, an deren Lineal die vorgeschobenen Teilstapel anliegen, in einer Position zur Durchführung des ersten Schnittes in der zweiten Richtung zwecks Abtrennen der diversen kleinen Stapel,

Figur 5

einen Schnitt durch die Schneidmaschine gemäß der Linie V-V in Figur 4,

Figuren 6 bis 8

die in Figur 5 eingekreiste, auf dem vorderen Tischteil aufliegende mobile Richtstation in verschiedenen Arbeitsstellungen,

Figur 9

die mobile Richtstation in einer Ansicht IX gemäß Figur 8,

Figuren 10 bis 15

Verfahrensschritte, die die Arbeitsweise der Planschneidmaschine ohne Zwischenschnitte zwischen den einzelnen Hauptschnitten verdeutlichen,

Figuren 16 bis 19

Verfahrensschnitte, die bei Durchführung eines Zwischenschnittes zwischen den Hauptschneidevorgängen einzulegen sind,

Figur 20

eine modifizierte Gestaltung der Planschneidmaschine mit Seitenanlegern an der Vorschubeinrichtung sowie am ersten Lineal, in einer Ansicht gemäß Figur 4,

Figur 21

eine Detailansicht des Seitenanlegers der Vorschubeinrichtung, in Richtung des Pfeiles D in Figur 20 gesehen,

Figur 22

eine Ansicht der Vorschubeinrichtung und des dieser zugeordneten Seitenanlegers, in Richtung des Pfeiles E in Figur 21 gesehen,

Figur 23

eine modifizierte Gestaltung der Einrichtung zum Befestigen der mobilen Richtstation mit dem vorderen Tischteil, in einer Ansicht gemäß Figur 10,

Figur 24

eine modifizierte Gestaltung der mobilen Richtstation mit Seitenanleger und Zentrierbolzen in einer Ansicht gemäß Figur 9,

Figur 25

in vergrößerter Darstellung einen Schnitt durch die Einrichtung zum Zentrieren von mobiler Richtstation und vorderem Tischteil und

Figur 26

eine modifizierte Gestaltung des weiteren Tischteiles zur Aufnahme der mobilen Richtstation, wenn diese nicht benötigt wird.

In the figures, the invention is illustrated on the basis of several embodiments of a face cutting machine, without being limited to these. It shows:

Figure 1

1 shows a top view of a first embodiment of the face-cutting machine with a mobile straightening station placed on a side table and not in use position and with a stack of cut goods resting on the back table part before the edge trimming,

Figure 2

FIG. 2 shows a representation according to FIG. 1 with the stack of cut material resting on the rear table part after the edge trimming, thus the initial stack resting on the rear table part, before cutting partial stacks in a first direction,

Figure 3

3 shows a view according to FIG. 2 with the partial stacks resting on the rear table part rotated by 90 °, before cutting in the second direction,

Figure 4

3 with the mobile straightening station placed on the front table part, on the ruler of which the advanced partial stacks rest, in a position for making the first cut in the second direction in order to separate the various small stacks,

Figure 5

3 shows a section through the cutting machine along the line VV in FIG. 4,

Figures 6 to 8

the mobile straightening station encircled in FIG. 5 and resting on the front table part in different working positions,

Figure 9

the mobile straightening station in a view IX according to FIG. 8,

Figures 10 to 15

Procedural steps that illustrate the operation of the face cutting machine without intermediate cuts between the individual main cuts,

Figures 16 to 19

Process sections that are to be inserted between the main cutting processes when performing an intermediate cut,

Figure 20

4 shows a modified design of the face cutting machine with side feeders on the feed device and on the first ruler, in a view according to FIG. 4,

Figure 21

20 shows a detailed view of the side feeder of the feed device, seen in the direction of arrow D in FIG. 20,

Figure 22

FIG. 21 is a view of the feed device and the side feeder assigned to it, seen in the direction of arrow E in FIG. 21,

Figure 23

3 shows a modified design of the device for fastening the mobile straightening station with the front table part, in a view according to FIG. 10,

Figure 24

3 shows a modified design of the mobile straightening station with side feeder and centering pin in a view according to FIG. 9,

Figure 25

in an enlarged view a section through the device for centering the mobile straightening station and front table part and

Figure 26

a modified design of the other table part to accommodate the mobile straightening station when it is not needed.

The basic design of the face cutting machine is the Representations of Figures 1 and 5 can be seen. The face cutting machine 1 has a stand 2, one carried by the latter Table 3 and one extending above the table 3 Portal frame 4 on. A rear table part 5 with its table surface 6 serves to accommodate the material to be cut 7, the consists of stacked sheet-like material. The single ones Sheet layers are designated with the reference number 8. A front one Table part 9 is used to hold the cut goods in Area of its table surface 10. In the portal frame 4 is a Press beam 11 mounted above the rear table part 5 is placed and can be lowered onto the material 7 to be cut. In front the press beam 11 is a knife carrier 12 in the portal frame 4 movably supported, in the area of its lower end a cutting knife 13 is screwed to this. The lower ends of Cutting knife 13 and knife carrier 12 are wedge-shaped, the surface of the cutting knife facing the press beam 11 13 positioned perpendicular to the table surfaces 6 and 10 and the cutting plane 14 is hereby formed. Below of the cutting knife 13 is in the rear table part 5, in short distance to the separating surface of the rear table part 5 and front table part 9, a cutting bar, not shown, embedded, into which the cutting knife 13 in its bottom dead center penetrates slightly to ensure that even the lowest Location of the stack of sheets made of paper, cardboard, foils or the like exists, is severed. The cutting knife is in known manner performed in the swing cut. In the area the rear table part is in the feed direction A (Figure 1) to be cut 7 a feed saddle 15 in the rear Table part 5 movably supported. The one with the good to be cut 7 comes into contact feed part 16 of the feed saddle front comb-shaped and has a greater height than the maximum insertion height of the goods to be cut 7. The Drive for moving the feed saddle 15 in the feed direction and contrary to this is not illustrated in detail. Below the protruding rear table part 5 are several Supports 17 arranged that the rear table part to the floor 18th support.

The working area in front of the front table part 9 on the Wrench cutting machine 1 is by the side of the front table part 9 arranged, arranged on the portal frame 4 Protected light barriers 19. To the side of the front Table part 9 are storage tables 20 and 21, on which cut or to be cut, if necessary can be stored temporarily. The operator's right storage table 21 also serves to accommodate a mobile straightening station 22 as long as it is not needed. Next to the A table 21 is a processing station 23 positioned, which is, for example, a label punch or a bundling machine. That by means of the face cutting machine cut small stacks become rows of Processing station 23 supplied, as shown in Figure 1 is shown. Before feeding the last row of small batches are seven more rows of the finishing station 23 have been supplied.

In the following, the procedure for forming the series becomes smaller Stack described, such a row in Figure 1 with the reference number 24 and the respective small stack with the Reference numeral 25 is designated. In the specific case, eight stack rows 24 of eight each for each output stack cut into small stacks.

FIG. 1 shows the one resting on the side storage table 21 mobile straightening station 22, with which both the rear table part 5 and also the front part of the table 9 of the cutting machine 1 for the Working with the machine are free. First it will be the big one Sheet stack 26 trimmed at its four edges 27 by he each to one of the side feeders 28 of the rear table part 5 created and by means of the feed saddle 15 in the Cutting position is advanced. After each cut, the Feed saddle 15 back and the operator can stack 26 slightly prefer and on the front table part 9 or turn 90 ° below the portal frame 4. To carry out The next edge cut is the stack 26 to the side feeder 28 and the feed saddle 15 created. After the four Edge cuts is the reduced in size Output stack 29 before, as shown in Figure 2. The on the cuts to be made are shown in FIG Dashed lines illustrate. At the side feeder 28 output stack 29 are successively advanced of the feed saddle 15 by the specified dimensions seven cuts in the first direction of the exit stack 29 eight partial stacks 30 are formed. Figure 3 shows these eight partial stacks 30, arranged side by side, but rotated by 90 ° are positioned in a position at which they face on the feed saddle and in the area of a partial stack 30 am right side feeder 28 abut. Based on this, the Face cutting machine operated in such a way that after feeding of the present output stack 29 and its Feed one cut each to form the eight here resulting small stack 28 is carried out and according to the method the front table part 9 in the direction of arrow A this small stack 25 perpendicular to the feed direction A, thus in Direction of arrow B, to further processing station 23 be pushed out. When cutting off the small stacks 25 4, the mobile straightening station arrives 22 used, which, as soon as the output stack 29 no longer the Space of the front table part 23 required from the storage table 21st can be moved to the front table part 9 and there is positioned at a defined location.

The mobile straightening station 22 is connected by means of five suction elements 53 the front table part 9 connectable, wherein in Figures 1 to 4, a straightening station 22 is shown on the operator facing side in a row has the suction elements 53.

The mobile straightening station 22 shown in FIGS. 8 and 9 is firmly connected to the front table part 9 and takes up first ruler 31 can be moved horizontally and around a horizontal one Swiveling axis. The mobile straightening station 22 has one plate-shaped base element 32. In this is a bearing element 33 stored by means of an electric servomotor 34 is movable. On the one hand, this is essentially the case plate-shaped base member 32 attached and it engages it in the direction of the double arrows C movable rod 35 on the bearing element 33 at. With the reference number 36 are electrical connections designated for driving the servomotor 34. In which Actuator is, for example, a servo motor. The plate-shaped base element 32 has on its top two parallel guides 37 for guiding the bearing element 33 on. This is provided with four lower bearing receptacles 38 in which the ruler 31 has in its lower area around axes 39 is pivotally mounted. In a central area of the bearing element 33 pivotally engage two toggle levers 40. The Legs 41 and 42 of the respective toggle lever 40 engage in Area of axes 43 and 44 articulated on the top of ruler 31 and Bearing element 33. A bearing axis connects the two Toggle lever 40 in the area of the joint between the respective two legs 41 and 42 and it engages about half the length the axis 45 a piston rod 46 of a pneumatic cylinder 47 the axis 45, the pneumatic cylinder 47 being articulated in an upper portion of the bearing member 43 is held. With The reference numbers 48 are the pneumatic connections of the pneumatic cylinder 47 designated. Since the articulation of the ruler 31 in lower pivot point, that is in the area of the axes 39, itself above the table surface 10 of the front table part 9 located, but must be permanently ensured that the ruler the table surface 10 contacted to also the lower sheet layers to be able to act on the respective stack is in lower area of the ruler 31 on its the rear table part 5 facing side one in the direction of the contact plane of the ruler 31 slidably mounted plate 50 in the actual ruler body 51 stored. When the ruler 49 is pivoted thus the lower one in contact with the table surface 10 Edge of the plate 50 relative to the actual ruler body 51 move. On the bottom is the plate-shaped base element 32 of the mobile straightening station 22 essentially in the Corners of the base element 32 provided with four rollers 52, so that the mobile straightening station, without having to lift it, from Storage table 21 pushed to the front table part 9 and back can be. To position the mobile straightening station 22 permanently to be able, it is - in a modified embodiment - In its rear area with three suction elements 53 and in their front side areas with two further suction elements 53 provided with negative pressure on the front Table part 9 can be created. The suction elements 53 are about axes 55 pivotable, the vertically extending slots 54 of the plate-shaped base element 52 are mounted. With the Reference numbers 56 are pneumatic connections to the suction elements 53 clarifies.

Figure 8 shows the mobile straightening station 22 with the retracted Bearing element 33 and extended piston of the pneumatic cylinder 47, with which the ruler 31 in its vertical position is transferred. In contrast, Figure 7 shows the retracted Position piston of the pneumatic cylinder 34 and consequently the ruler 31 in its pivoted position, in which corresponds to the parallelogram shape of the cut resulting stack of cut material is pivoted. Figure 6 shows one compared to the embodiments according to FIGS. 7 to 9 modified design, instead of the electric servomotor 34, with which any position can be represented, three Pneumatic cylinders 57, 58 and 59 connected in series between the plate-shaped base element 32 and the bearing element 33 are effective and by the positions of these three Pneumatic cylinder three different extension states of the Bearing element 33 can be represented in the direction of the double arrow C. are.

The following is the procedure for cutting the small ones Stack 25 described with reference to the representation of Figures 10 to 15:

The starting position according to FIG. 10 represents that situation represent how they are reproduced in the overall representation according to FIG is. The material to be cut, that in the individual partial stacks 30 is present, is used for cutting up to the first cutting dimension the output stack in the second direction by means of the feed saddle 15 advanced in feed direction A. Then it will the mobile straightening station 22 with the ruler 21 standing vertically from Move the table 21 to the front table part 9 and with the Ruler 31 against the facing front surfaces of the partial stack 30 positioned. This position represents, for example, the Reference position for the subsequent movements of the ruler 31 and the bearing element 33. The reference position is about the position of the feed saddle 15 and the known dimension of Output stack 29 in the feed direction A, the output stack 29 abuts the feed saddle 15 in the machine electronics representable. In this position the mobile straightening station 22 this is achieved by applying negative pressure to the suction elements 53 firmly connected to the front table part 9. The control the suction elements 53 are carried out by the machine electronics. In the subsequent cut, as shown in Figure 11, severed the cutting knife 13 the material to be cut and thereby generates the individual small stack 25, due to the wedge shape of the cutting knife 13 and the knife carrier 12 in the form of a parallelogram be shifted in itself. Tailored to the lowering and so that the cutting movement of the cutting knife 13 is controlled via the machine electronics, the toggle lever 40 assigned pneumatic cylinder 47, such that the Ruler 31 pivots in the direction of the arrow, which at the same time Move the bearing element 33 slightly away from the cutting plane is because the pivot axis 39 of the ruler 31 at a distance from Table surface 30 of the front table part 9 is positioned and due to the unchangeable footprint of each small stack 25 the movement of the plate 50 of the ruler 31st taking into account their shift is to be compensated.

The front table part 9 is movable and can with formation a gap 61 can be moved from the rear table part 5. A second ruler 62 is located below the front table part 9 pivoted about an axis 63. About not shown Adjusting means, for example a pneumatic cylinder, can do that Ruler, controlled by the machine electronics, at complete open gap 61 to the rear edge 64 of the front table part 9 are pivoted, being perpendicular to the table surface 10 is positioned and just like the ruler 31 over the entire width of the front table part 9 extends. From there static reasons that shown in Figures 10 to 15 Cutting bar 65 opposite the front edge of the rear table part 5 is set back slightly, is after that in Figure 11 shown section of the respective small stack 25 slightly over the rear edge 64 of the front table part 9. Before the ruler 62 swiveling in when the gap 31 opens the rear edge 64 of the front table part 9 creates, it is therefore necessary, according to the parallelogram shape placed ruler 31 according to this projection according to the arrow to move back in Figure 12 by using the machine electronics the electric servomotor 34 in this sense is applied so that, as shown in Figure 13, simultaneously with pushing over the respective small stack 25 accordingly the ruler 31 is moved forward. Subsequently 14, the small stacks 25 become erected in its cuboid shape, the ruler 31 in its position perpendicular to the table surface 10 by loading of the pneumatic cylinder 47 is pivoted back and at the same time the bearing element 33 by means of the electric servomotor 34 is moved slightly in the direction of the second ruler 62, by the difference due to the bearing of the ruler in the Compensate table surface 10 spaced axis 39. Also these movements take place through defined control via the Machine electronics. Then by means of an ejector 67, which in its rest position in the area of the storage table 20 is positioned in the between the two rulers 31st and 62 formed transverse channel 68 arranged series of small Stacked 25 transported in the direction of the transverse channel 68. For this the pusher 67 becomes behind the row of small stacks 25 lowered and move in the direction of the other storage table 21. Figure 1 shows, for example, but for the previous process cut output stack, one such last discharged row 24 of small stacks 25. This small stacks 25 are processed in the processing station 23 punched or bundled.

After the row of small stacks 25 has been pushed out, the Ejector 67 again in its starting position shown in Figure 4 move, the ruler 62 swung back and through Moving the front table part 9 of the gap 61 between this and the rear table part 5 closed again. It then takes place in the sense of the representation according to FIG Feed of the material to be cut by the specified cutting dimension, the electric servomotor 34 in the sense of the illustrated Arrow is activated by means of the vertical aligned rulers 31 from the individual longitudinally aligned Stack the total stack formed against the feed saddle 15 to align. The cutting sequence then closes according to the representation of Figures 11 to 14. After the last one Cutting and the removal of the resulting small ones Stack 25 will position the chopper into position Figure 15 transferred and the after the last cut on the rear table section 5 remaining row of small stacks 25 with the feed saddle 15 as far as possible on the front Table part 9 pushed over. It will then open after the Gap 61 the ruler 62 against the rear edge 64 of the front Table part 9 moves and pushes this last row completely on the front part of the table against the ruler 31. Also this row is then by means of the pusher 67 of the further processing station 23 supplied.

Are all rows of small stacks 25 of the finishing station 23 is supplied, is released to the Suction elements 53 the mobile straightening station 22 again to the storage table 21 proceed so that on the now vacant front table part 9 handled the next exit stack can be trimmed after the edge if necessary has been.

Figures 1 to 4 illustrate that a central connection 69 leads to the mobile straightening station 22. This shows the pneumatic lines to the pneumatic cylinder (s) 47 or 57 to 59, also the vacuum connections of the suction elements 53 and the electrical connections to the servomotor 34. With the central Connection 69 is coupled to the electronics that the aggregates (Pneumatic cylinder, servomotor, suction elements) of the mobile Straightening station 22 controls and also a Path detection system for detecting the position of the mobile Straightening station 22 relative, that is perpendicular to the cutting plane, can have. This makes it independent of the reference position of the feed saddle 15 as well as the adjoining it Stack of goods to be cut possible, the mobile straightening station 22 with respect to the cutting plane. This can be done with it with regard to any location of the front table part 9 respectively. Using electronics, in particular Feed data of the feed saddle 15 are taken into account, with which the electric servomotor 34 depending on different Feed dimensions can be controlled. Using of several pneumatic cylinders 57, 58 and 59 instead of the electrical servomotor 34, however, are only less feed dimensions of the ruler 31 can be represented, one of the cylinders the compensation when pivoting the ruler 31 is used.

A feed dimension of the electrical controlled by the electronics Actuator 34 or the electronically controlled Pneumatic cylinders 57 to 59 are used to compensate for Swiveling the ruler 31, a second feed rate of the vote to the variable width of the material to be cut according to the feed of the feed saddle. A third Feed dimension is in connection with one between two main cutting processes to create the series of small stacks 25 to see the intermediate cut to be inserted. With regard to the Problems in connection with intermediate cuts are addressed to the EP-A-0 056 874. The cutting under consideration an intermediate cut in which a thin waste dispute 70 occurs, is illustrated in Figures 16 to 19. The The relationships in FIG. 16 correspond to those in FIG. 11. After the cut, while swiveling the ruler 31 and moving the bearing element 33 slightly from the cutting knife away, an intermediate feed is via the feed saddle 15 of the material to be cut, as shown in FIG. 17. Around this level is required by applying electrical power Actuator 34, the bearing element 33 from the cutting plane 14 drive away. It is then as shown in Figure 18 transfers the small stacks 25 into their cuboid shape, by the ruler in the sense of the representation according to FIG. 14 31 oriented perpendicular to the table surface 10 Position is pivoted back, the pneumatic cylinder 47th and the electric servomotor 34 are applied. Then it will be to form the gap 61, the front table part 9 from the rear Move the table section 5 away and the ruler 62 against the rear edge 64 of the front table part 9 pivoted. By means of the The pusher 67 becomes the series of small stacks 25 of the Processing station fed and at the same time the Intermediate cut performed in which the resulting waste strip 70 is disposed of through the gap downwards. In order to the situation arises, as shown in FIG. 14, then the gap as shown in the figure 15 closed again.

The embodiment of the face cutting machine 1 according to FIG. 20 illustrates a lateral attached to the feed saddle 15 Feeder 71 and a lateral ruler attached to the first ruler 31 Feeder 72 for laterally placing the partial stack 30 on stationary side feeder 28 of the rear table section 5. The Structure and operation of the side feeder 71 on the feed saddle 15 is in Figures 21 and 22, the structure and the Operation of the side feeder 72 on the first ruler 31 in Figure 24 illustrates in more detail. Figures 21 and 22 show a Leaning ruler 73 with guide shaft 74 in a parking position. For the format setting is provided for a feed guide 75 which a receptacle 76 is slidable. This takes a swivel mount 77 on, in which a pivot cylinder 78 is mounted. This serves to pivot the contact ruler 73 by 90 ° from the in Figure 21 apparent horizontal parking position in the same vertical working position illustrated in this figure. By means of a sliding cylinder mounted in the receptacle 76 79 can lay the ruler 73 in front of the work area the feed saddle 15 and retracted so that the Leaning ruler 76 outside the area of influence of the rake 16 the feed saddle 15 is placed. Then this is required when the feed device is pushed to the maximum and the Rake 16 of the feed device 15 with the corresponding meshing rake-shaped section of the press beam 11 cooperates and consequently the investor 71 outside of this To arrange effective range of feed saddle 15 and press beam 11 is. - The side feeder 72 of the first ruler 31 has one arranged parallel to the axes 39, in the actual ruler body 51 mounted guide shaft 80 for setting the format. In this, a housing 81 is mounted, which is a feed cylinder 82 records. In this one is parallel to the actual one Ruler body 51 arranged ruler 83 stored. The Art the adjustment of the housing 1 in the guide shaft 80 is in the figure is not illustrated, it can be done by any means take place, for example by means of an electric servomotor or also mechanically. The control of the lateral feeder 71 and 72 is done via the machine electronics. The investor 72 is located in that area of the ruler 31 or mobile straightening station 22, the processing station 23rd is turned away. The length of the ruler 31 of the mobile straightening station 22 is of course dimensioned such that the feeder 72 outside the area of the small sub-stacks 25 is taken, is arranged.

Figures 23 to 25 illustrate the design of the Device for centering the mobile straightening station 22 with respect to of the front table part 9. For centering is how the 24 shows the mobile straightening station 22, specifically their plate-shaped base element 32 two in the area of the end faces 84 of the base element 32 arranged centering pin 85 provided, which is in operative connection with centering recesses embedded in the front table part 9 are feasible. The centering bolts 85 are in one plane arranged parallel to the cutting plane 14 of the knife 13 is positioned. As can be seen in the illustration in FIG. 23 are at different distances from the cutting plane 14, specifically in three different intervals, pairs of quintuple shots 86 provided in the front table part 9, so that plate-shaped base element 32 at three different distances can be positioned to the cutting plane 14. The positioning distances are identical, that is, it points the first Positioning level, based on the assigned centering fixtures 86 the same distance from the second centering plane as that third centering plane from the second. Figure 25 illustrates the structure of the associated centering pin 85 Centering device: In the plate-shaped base element 32 is a Housing 87 mounted, which receives a pneumatic cylinder 88, with which the centering pin 85 is vertical to the table surface 10 of the front table part 9 when lying on this mobile Straightening station 22 is movable. The lower end of the centering pin 85 is tapered and penetrates the corresponding tapered centering 86 in a centering plate 90, which in the front table part 9th embedded and with various fasteners 91 with this is connected. The centering plate is over the fasteners 91 assigned adjustable bushings to the cutting plane 14 adjustable, so that an absolute parallelism between the cutting plane 14 and that in the vertical position located ruler 31 is guaranteed. In the hundredweight reception 86 introduced centering pin 85 is one of the centering 86 associated limit switch 92 contacted, with what the exact positioning of the mobile straightening station 22 on the front table part 9 can be monitored. To change the Position of the straightening station 22, it is only necessary whose raise both centering bolts 85 to the disengaged position and the base member 32 in the new aligned position of the Centering pin 85 with the associated centering receptacles 86 bring and the centering pin 85 again in the centering 86 lower. About these predefined defined Positions of the plate-shaped base element 32 of the mobile Straightening station 22 to the front table part 9 and the continue known positions of the adjustment elements for the first ruler 31 can be the specific required in the sense described above Positions of the first ruler 31 in the operation of the face cutting machine 1 represent. The control of the pneumatic cylinder 88 and the limit switch 92 takes place via the machine electronics.

Figure 26 shows a modified design of the right table 21. This has two arranged one above the other in parallel Table levels 21a and 21b, the two table levels assigned table parts 21c and 21d by means of a web 21e are connected. With the underside of the table part 21d is one Lift rod 21e connected, with which the storage table 21 in total can be raised and lowered. In the lowered, in figure 26 position shown with solid lines forms the Surface of the upper table part 21c a plane with the Surface 10 of the front table part 9. In the raised Position of the table part 21c forms the surface 21b of the lower table part 21d, however, a plane with the surface 10 of the front table part 10. The surface 21b is used for Recording of the mobile straightening station 22 when it is not required becomes.

Claims (21)

Wafer cutting machine (1) for cutting stacked, sheet-like goods, with a table (3) for receiving the goods, a rear table part (5) receiving the goods to be cut and a front table part (9) receiving the cut goods, the table parts ( 5, 9) to form a gap (61), further with a feed device (15) and a press bar (11) for the material to be cut, a knife (13) for cutting the material, a first movable ruler (31) , which can be arranged in the area of the front table part (9), a second movable ruler (62) which can be brought into its working position after opening the gap (61), in such a way that a transverse channel between the two rulers (31, 62) (68) is formed, as well as with a conveyor device (67) which is movable along the transverse channel (68), characterized in that a mobile straightening station (22) can be connected to the face-cutting machine (1) in the region of the front table part (9) , where di e mobile straightening station (22) has the first ruler (31). Wafer cutting machine according to claim 1, characterized in that the front table part (9) serves to receive the mobile straightening station (22), which can be connected in particular to the front table part (9). A face-cutting machine according to claim 1 or 2, characterized in that a side table part (21) is arranged next to the front table part (9) and serves to receive the mobile straightening station (22) when not in use. Wafer cutting machine according to claim 3, characterized in that the surfaces of the front (9) and side table part (21) form a plane and the mobile straightening station (22) can be moved back and forth between the two table parts (9, 21). A face-cutting machine according to claim 3 or 4, characterized in that the side table part (21) can be raised and lowered and has two table levels (21a, 21b) arranged one above the other, the lower table level (21b) receiving the mobile straightening station (22). serves when not in use, wherein the upper table level (21a) with the side table part (21) lowered and the lower table level (21b) with the side table part (21) raised form a plane with the surface (10) of the front table part (9). A face-cutting machine according to one of claims 1 to 5, characterized in that the mobile straightening station (22) has wheels or rollers (52) for moving on its underside. A face-cutting machine according to one of claims 1 to 6, characterized in that the mobile straightening station (22) is provided on its underside and / or on the side with elements (53) which operate by means of negative pressure and / or magnetically active elements and which are operatively connected to the front table part (9 ) and / or a side stop arranged in the area of the front table part (9). A face-cutting machine according to claim 6, characterized in that the mobile straightening station (22) can be positively connected to the front table part (9) and / or a side stop arranged in the region of the front table part (9). A face-cutting machine according to claim 8, characterized in that the mobile straightening station (22) is provided with positioning elements (85) which can be brought into the operative position with complementary positioning elements (86) of the front table part (9). A face-cutting machine according to claim 9, characterized in that the positioning elements (85) of the mobile straightening station (22) are designed as centering bolts and the complementary positioning elements (86) of the front table part (9) are designed as centering receptacles. A face-cutting machine according to claim 9 or 10, characterized in that several pairs of complementary positioning elements (86) are arranged at different vertical distances from the cutting plane (14) of the cutting knife (13) in the front table part (9). A face-cutting machine according to one of claims 1 to 11, characterized in that the feed device (15) and / or the first ruler (31) are provided with movable side feeders (71, 72). A face-cutting machine according to claim 12, characterized in that the side feeder (71) of the feed device (15) can additionally be moved in the feed direction and in the opposite direction. Wafer cutting machine according to one of claims 1 to 13, characterized in that the mobile straightening station (22) is provided with units (32, 33, 40) for movably receiving the first ruler (31). Face cutting machine according to one of claims 1 to 14, characterized in that the first ruler (31) can be pivoted about a horizontal axis (39). A face-cutting machine according to one of claims 1 to 15, characterized in that the mobile straightening station (22) has a base element (32), in particular a plate-shaped base element (32), in which the first ruler (31) is movably and pivotably mounted. A face-cutting machine according to claim 16, characterized in that a bearing element (33) is mounted in the base element (32) which can be moved by means of at least one adjusting element (34; 57, 58, 59), and the first ruler (31) in the bearing element (33) ) is mounted, which can be pivoted by means of at least one further control element (47). A face-cutting machine according to claim 17, characterized in that the ruler (31) can be pivoted in the region of its lower end about an axis (39) on the bearing element side, and the upper end of the ruler (31) is mounted in the bearing element (33) via a toggle lever (40) is, the further actuating element (47) engages on the toggle lever (40) and on the bearing element (33). Face cutting machine according to one of claims 1 to 18, characterized in that the adjusting elements provided for moving the first ruler (31) are designed as electrical servomotors (34) or pneumatic cylinders (47; 57, 58, 59). Face-cutting machine according to one of claims 1 to 19, characterized in that pneumatic and / or electrical, in particular electronic control means for controlling the adjusting elements (34, 47, 57, 58, 59) for the first ruler (31) and / or the elements ( 85) are provided for the connection of the mobile straightening station (22) and the front table part (9). Face cutting machine according to claim 20, characterized in that the control means are wireless, in particular control means are provided on an infrared basis.

Images