EP0963281A1

EP0963281A1 - Method and device for cutting cuttable material from paper materials or paperlike stackable materials

Info

Publication number: EP0963281A1
Application number: EP98913520A
Authority: EP
Inventors: Thomas Warnatsch; Johann Schäffer; Winfried Weber; Horst Günther
Original assignee: Perfecta Schneidemaschinenwerk GmbH
Current assignee: Perfecta Schneidemaschinenwerk GmbH
Priority date: 1997-02-28
Filing date: 1998-02-21
Publication date: 1999-12-15
Anticipated expiration: 2018-02-21
Also published as: WO1998038018A1; EP0963281B1

Abstract

The invention relates to a device for cutting cuttable material from paper materials or paperlike stackable materials (2), comprising a cutting device accommodating three cutting blades (4,5), wherein two simultaneous side blades (5) and a phase-shifted front blade (4) cut at least three sides of the cuttable material (2), in addition to further mechanisms ensuring at least the transport functions of the cuttable material (2) wherein the cutting device is provided with at least one control circuit or control unit (20,21) for defined interruption of the movement of the cutting blades (4,5) and at least one control circuit or control unit to position the cuttable material (3).

Description

Method and device for trimming material to be cut from paper materials or stackable materials similar to paper materials

The invention relates to a method for trimming material to be cut made of paper materials or materials similar to paper material, in which, in cyclically recurring cutting cycles of a cutting device, two sides of the material to be cut can be cut at the same time and a third side thereof out of phase, and further upstream or subsequent process steps are carried out at least to implement the transport of the material to be cut.

The invention further relates to a device for trimming material to be cut from paper materials or paper material-like, stackable materials, consisting of a cutting device receiving three cutting knives, in which two side knives cut at least three sides of the material to be cut simultaneously and one front knife out of phase, and further mechanisms for realization at least the transport functions of the material to be cut.

Cutting machines are known in which the cutting, pressing and positioning movements are mechanically inevitably carried out. For example, in DE 40 33 437 AI or in DE 41 13 081 AI such a cutting device is proposed, which form a mechanically positive cutting machine in the case of mechanical forced coupling with loading and unloading devices (for example cam-controlled insertion and delivery systems). Such machines are widely used both in brochure ranges (inline machines) and less frequently than single machines (offline). In this way, an inevitable functional sequence can be achieved on these machines with simple mechanical means. The disadvantage here is that one determined by the mechanical forced operation Sequence of work cannot be changed by the operator. On the one hand, this means that if slow movements are required on a single sub-function, the entire machine has to work at a low speed, on the other hand, only the technological sequence once planned (e.g. conveying stacks from the magazine into the cutting station, pressing, cutting on three sides, releasing the pressure, laying out the stack) can be processed.

Machines with so-called sequence control and mechanically inevitable cutting units are also known. The cutting units, the pressing, the slide-in systems and possibly the delivery are controlled by separate drives. The linkage is done by a controller, whereby certain movements must be completed or positions must be reached before the next drive is set in motion. Here, several operating modes can be achieved through different control sequences. Continuous operation is customary, with one operator feeding the material to be cut into the insertion system, after which the stack is trimmed fully automatically and then laid out for a second operator.

The return operation is also known, in which the finished trimmed stack is transported back to the operator so that the machine can be operated by only one person.

Multi-panel trimming is common, in which two or three panels are cut out of a raw format by means of suitable technological sequences using additional components. However, multiple-use trimming has so far only been used for manual tongs loading and only on offline machines, so that additional separating saws must be used on brochure sections. So far, machines with sequential control have been used in which the cutting device can be moved into only one fixed position (basic position) during the cyclically recurring processing cycle. Under certain circumstances, the automatic approach to a further position is provided for the knife change. This is chosen so that all knives can be changed without collision is. On all known machines of this type, only the cyclically recurring approach to a position determined by the machine manufacturer is possible during the processing cycle, as a result of which only a few technological sequences can be achieved.

DE 195 16 047 AI proposes two separate drives (digitally controlled servo or step drives) for the front and side knives. In addition, autonomous drives are provided for the pressing and transport mechanisms. In addition to the large energy demand peaks and the associated high connection expenditure, it is disadvantageous that the required tight chronological sequence of both separately driven knife types requires great precautions to avoid a collision between the knives. In the event of an error, the damage incurred is very large.

DE 41 10 621 AI discloses a device with a non-uniformity gear of degree 2 for moving both types of knives, the first degree being bound by a main and the second degree by a power take-off. In addition to the advantage of the mechanical forced run protection and the collision-free nature of the two knife types, with this drive principle the majority of the energy required can be provided by a main drive supported by a flywheel, so that the network loads and connection expenses are kept low. The high outlay for realizing this solution is disadvantageous.

Applications are also known in which the individual types of knife are driven directly by hydraulic cylinders. In addition to the collision protection expenses involved, there is the disadvantage of the undefined average. In contrast to the crank drives otherwise used, in which the average position is determined independently of the knife speed and cutting resistance solely by the dead position of the mechanism, these machines have to cut very deep into the cutting bars. to secure the average under all conditions. This leads to increased blunting of the knives. Furthermore, the property of the crank drives is missing that, at a low operating height, a considerably greater cutting force can be exerted by the dead center ratio, which enables the cutting of very hard material to be cut. Attention is also drawn to the known disadvantages of hydraulic drives (efficiency, energy consumption, leakage problems in connection with the paper to be cut). In addition, such three-knife cutting machines do not work in the oblique swing cut. The parallel oscillating cut used on these machines achieves significantly larger gates, since the entire knife is immediately engaged in the area of use. This results in greater wear, especially of the knives, and a reduction in the quality of the cut.

Methods of wire comb binding are known, a trimmer for four-sided trimming being arranged after a collating machine. After trimming, the panels are tied with a wire comb. The disadvantage here is that due to the way the trimmer works (punch cut in two stations), the cut quality that can be achieved is only acceptable with small block thicknesses.

In another process, book blocks are produced by a booklet stretch (gathering machine, perfect binder, three-knife cutting machine). Before binding the wire comb, the spine previously cut on the perfect binder is cut off using a Lumbeck cutter. The advantage here is that the block thickness that can be achieved up to three cuts satisfies all requirements. In addition to the additional effort for gluing, the disadvantage is that the Lumbeck cutter can only cut a small block thickness, so that the bound book block must be manually separated into smaller blocks with a high amount of work.

It is therefore an object of the invention to provide a method for trimming material of the type mentioned at the outset improve that an at least three-sided automatic or semi-automatic trimming with variable cutting sequences and high average accuracy is economically feasible. It is a further object of the invention to create an associated device with which the method according to the invention can be carried out in a technologically simple and safe manner. The method and device should also be able to be easily integrated into conventional processing lines and enable new processing sequences.

According to the invention, the object is achieved by a method according to the preamble of claim 1 in that each cyclically recurring cutting cycle of a mechanically inevitable cutting device can be interrupted cyclically in at least one position of the cutting knife of the cutting device in accordance with a selectable, predetermined program sequence, that the cutting cycle determined by the mechanical forced movement of the cutting device in the position of the cutting knife reached by the interruption can be continued according to the program sequence, the same cutting material being processed further in or without a changed position or a different cutting material and / or that each interrupted phase of the Cutting cycle for processing the same, changed position or different material to be cut can be repeated as often as required before starting the respective processing cycle.

With this process sequence according to the invention, it is possible to use the advantages of crank-driven cutting machines also for four-sided trimming and for inline multiple-use trimming. The cutting knives can be operated in the oblique swing cut, whereby a high average accuracy of the material to be cut is achieved. The process sequence can be carried out inexpensively, since changeover times are eliminated or minimized or processing sequences that are normally carried out on different machines are also taken over by the cutting machine. In addition, this saves transport routes, means and labor.

It is also advantageous that the method can be used economically both inline-operated and on individual machines. The integration in brochure lines or production lines allows new machine and work time-saving technological processes.

According to an advantageous development of the method according to the invention, the cutting sequence of the cutting knives can be reversed and / or varied as desired and the position of the cutting knives changed by interrupting the cutting cycle in a predetermined position.

This enables a wide variety of cutting sequences, which can be set on the cutting machine by means of a correspondingly pre-programmed program selection. Adjusting the movement sequence shortens the process sequence since the cutting knife movement can be interrupted at any pre-programmed point.

It is also advantageous that, according to the method, it is provided that the direction of rotation for the movement of the cutting knives is optionally reversed from one position to another.

This increases the variability of the cutting sequences without the transport or positioning processes of the material to be cut being absolutely necessary.

According to the method according to the invention, it is further provided that when the material to be cut is cut on four sides, the two parallel sides of the material to be cut are cut simultaneously and the third side is out of phase, that the material to be cut on three sides is then automatically removed from the cutting device and repositioned, while the cutting device moves into such a position that after the slot is inserted again Material to be cut into the cutting station the fourth side can be trimmed.

In one working cycle of a mechanically inevitable three-sided cutting machine, all four pages of a book, for example, can be trimmed with high average accuracy. The process sequence is shortened in that the cutting knife is positioned simultaneously with the transport and positioning processes of the material to be cut. However, this process sequence requires safety devices on the machine to prevent the risk of injury.

According to another embodiment of the procedure, it is provided according to the invention that the four-sided trimming of the material to be cut is effected in that after the three sides have been trimmed, the third side is cut repeatedly, and then the material to be cut is automatically removed from the cutting station and repositioned, and in that after a new insertion of the material to be cut into the cutting station, the fourth side of the material to be cut is trimmed.

In this way, the risk of accidents is avoided even when cutting material to be cut on four sides, since the triggering of a cutting movement of the knives is coupled to the presence of the material to be cut in the cutting area. However, according to this solution, it must be accepted that the repetition of the cutting process on the third side may cause damage to the material to be cut due to minor deviations in the positions of the material to be cut and the cutting knife that occur randomly.

According to the invention, a new processing technology of the material to be cut is achieved within a production line in that after the compilation of the material to be cut by means of a collating machine and automatic transport to the cutting device, the four-sided trimming of the material to be cut is carried out in the oscillating cut. This saves operations such as gluing the book block or brochure and cutting off the back after trimming three sides using a Lumbeck cutter. In addition, the disadvantage of the Lumbeck cutter (trimming only small block heights is possible) is avoided, so that there is no need to split large blocks into several small ones, which in turn minimizes the work involved in producing blocks trimmed on four sides and the like.

According to the invention, the method can also be used advantageously if, after the four-sided trimming of the material to be cut and automatic transport to a downstream wire comb binding machine, the material to be cut is bound with a wire comb.

This also eliminates the need for additional - and known processes for the four-sided trimming of material to be cut - which require separate machines integrated in the process sequence, such as perfect binders and Lumbeck cutters.

A new technological process sequence of a cutting machine integrated in a brochure section is also achieved in that a blank is first cut out from a raw format by double-sided cutting, then the raw format residue is automatically removed from the cutting station, that the first crop is then trimmed, and then the raw format residue automatically fed to the cutting station for three-sided trimming and / or for cutting off and trimming a further benefit.

According to this solution, both working time and transport costs and the separating machines previously used for the separation process of the raw format in single use are saved.

It is also technologically advantageous if the trimming can be carried out in connection with at least one drilling operation of the material to be cut. Thus, the material to be cut can be trimmed on three or four sides at the same time or in succession and provided with a perforation for a ring binding.

According to the invention, it is also provided that the positions of the cutting knives of the cutting device, in which the cutting cycle is interrupted, can be changed manually as desired by the operator.

According to the invention the object is further achieved by a device according to the preamble of claim 11 in that the cutting device has at least one control loop or a control for interrupting the movement of the cutting knives and at least one control loop or control for positioning the material to be cut that the control loops and / or controls are designed and arranged in such a way that at least one positioning device and the knives of the cutting device can assume their positions determined by a selectable, predetermined program sequence at the same time or in succession, both devices being able to pass through their positions several times or not at all during a processing cycle, and that the synchronization of the cutting and the positioning device takes place by means of a central control or system regulation.

The cutting device according to the invention can advantageously be used in particular with regard to saving costs and time in all known embodiments of cutting machines. The control loops or controls in conjunction with the machine control or system control and the programming device allow the cutting device to be used both inline and in offline mode with any sequence of the cutting sequence or the working cycle. The construction of the cutting device in connection with the positioning device takes place in a cost-effective manner, since expensive electronic control units are eliminated.

According to an advantageous embodiment of the cutting device the at least one control circuit or the at least one control for the defined interruption of the movement of the cutting knives essentially comprises at least one position detection element, means for interrupting the movement of the cutting knives, a control element and a machine control or system regulation.

The means for interrupting the movement of the cutting blades are designed as a clutch / brake combination.

This structurally simple design allows a safe interruption of the movement of the cutting knives in any given position with precisely positioned material to be cut.

The exact positioning of the material to be cut is likewise carried out in a structurally simple manner in that the at least one control circuit or the at least one controller for positioning the material to be cut essentially comprises at least one positioning system connected to a feed device and servo-driven and a linking unit.

If the central control or system control is taken over by the central machine control, there are no further control devices for controlling the control loops or the controls.

According to another embodiment of the device according to the invention, the control element of the control circuit or of the control for the cutting knives is designed in such a way that it can carry out a stepless regulation of the driving forces or moments transmitted to the cutting knives.

This enables the cutting device to be used more easily and with less impact.

A further development of the device according to the invention provides that the positioning system between a stack magazine and a tongs loading station is arranged.

As a result, the material to be cut can be fed on the way from the stacking magazine to the tongs loading station or from the cutting device to the tongs loading station into any position of the tongs loading station which is predetermined with regard to the position of the cutting knives.

According to a further advantageous embodiment, the servo-driven positioning system in combination with the machine control or system control is designed such that the material to be cut can be moved into any position between the stacking magazine and the tongs loading station and these positions can be reproduced as often as desired with the same or different material to be cut.

This ensures that material of any size can be positioned precisely.

The control element of the control loops and / or the controls is designed such that the positioning device is deactivated for manual loading of the tongs loading station. This significantly increases the versatility of the cutting device because manual loading, for example for trimming individual books or brochures, can be carried out.

To prevent collisions and to ensure a safe automatic insertion into and an equally safe removal of the material to be cut from the cutting station, it is provided that the means for interrupting the movement of the cutting knives are designed such that the cutting knives are above the material to be cut in the interrupted state of their movement , with the front knife in at least one position and the side knife in at least one further position in the initial region of the movement toward the material to be cut. To ensure offline operation of the machine during inline operation, the control device is designed so that the assignment of the interruptions in the movement of the cutting knives to the cyclically recurring cutting cycle and the positions of the material to be cut can be changed manually by operator selection.

According to the invention, a protective device is also provided between the tongs loading station and the cutting device, which stops the cutting device when bodies which are not approved are fed into the cutting station.

This is to prevent accidents when the cutting knives move without the material being cut in the cutting station.

According to a further advantageous embodiment of the device according to the invention, an additional device can be connected to the cutting device for separating and trimming several blanks from a raw format, which is designed and coupled to the control loops or controls in such a way that the separated raw format after the first cut of the side knives transported back to the tongs loading station and there again automatically fed to the tongs loading station by means of the positioning device, during which time the front knife is trimmed before or after the first use.

This additional device, which can be arranged on the cutting machine, also ensures that the cutting machine can be assigned to any processing technologies in a cost-effective and time-saving manner in inline operation. It is also advantageous that this assignment ensures that the material to be cut can be trimmed with high precision, the maximum possible height of the material to be cut being used. The separation of the raw format into two or more uses is carried out on the three-knife cutting machine as advantageously as a four-sided bleed.

A further preferred embodiment provides that for the four-sided trimming of the material to be cut, an additional device can be connected to the tongs coating station, which is designed as a rotary gripper system and is coupled to the control loops or controls so that after the three-sided trimming of the material to be cut it moves back to the tongs loading station is rotated there into the corresponding position and fed to the cutting device again.

With the help of the rotary gripper system it is achieved that the cutting material can be carried out fully automatically with four-sided trimming.

The variable usability of the cutting machine is also ensured by the fact that the loading and unloading processes are carried out with one or more tongs loading systems, in which a switch between manual and automatic tongs loading is possible.

In order to ensure that the direction of rotation of the drive of the cutting device can be changed during a working cycle, the invention provides that means for reversing the direction of rotation of the driving shaft, preferably in the form of a reversing clutch, are arranged within the drive system of the cutting device.

The invention will be explained in more detail below on the basis of exemplary embodiments. In the accompanying drawing:

1 is a schematic representation of a cutting device for trimming at least three sides,

2 shows the schematic representation of a cutting machine according to the invention, 3 shows the schematic representation of the cutting machine according to the invention during the cutting of several blanks from a raw format (separating cut) with fully automatic operation,

4 shows the control diagram of a cutting machine according to the invention,

Fig. 5 shows the movement diagram of the knife and the material to be cut on four sides and triple change of

Position of the knives within a cyclically recurring work cycle and

Fig. 6 shows the movement diagram of the knife and the material to be cut with four sides and changing twice

Position of the knives within a cyclically recurring work cycle.

Fig. 1 shows schematically a cutting device. In this case, two cutting mechanisms for the side knives 5 and the front knife 4 are arranged in a machine body 1, to which a cutting table, which characterizes a cutting station 2, for receiving the material to be cut 3 is assigned. Both mechanisms are inevitably connected to one another by mechanical means by means of a gear 6. The main shaft 9 of the cutting device is connected to a clutch / brake combination 7, controlled by a control element 20, with a flywheel and pulley, which is operatively connected to a motor 10 via a belt drive 8. A position sensor 19 is inevitably connected to the main shaft 9 and, like the control element 20, is in operative connection with the machine control 21.

Fig. 2 shows a sectional view of the essential parts of a cutting machine according to the invention. On the machine body 1, a feed belt 11 is attached, at one end of which there is a stack magazine 12. Below the stack magazine 12, a positioning system 13 is arranged so that it is in Operational connection with an intermediate station 14 and a gripper loading station 15 is. A plier slide-in positioning system 16 with positioning stops 17 is arranged between this and the cutting station 2. There is a delivery belt 18 on the other side of the machine body 1. The material to be cut 3 is located in the cutting station 2.

Fig. 3 shows a sectional view of the cutting machine with fully automatic operation for multiple-benefit cutting. On the machine body 1, a feed belt 11 is attached, at one end of which there is a stack magazine 12. A positioning system 13 is arranged below the stack magazine 12 in such a way that it is in operative connection with an intermediate station 14 and a tongs loading station 15. Between this and the cutting station 2, a tong insertion positioning system 16 with positioning stops 17 is arranged. A delivery belt 18 is located on the other side of the machine body 1. A raw format 22 is shown in each of the individual function stations 11, 12, 14, 15. The finished product 24 is located in the cutting station 2, and the separated raw format 23 is located on a transport system (not shown) next to the cutting station 2.

4 shows a control diagram of a cutting machine according to the invention. A link unit 27 and a comparator 29 are implemented within the machine controller 21, which is designed as a memory-programmed controller (PLC). The linking unit is in operative connection with an operating unit 28, while the comparator interacts with the position transmitter 19, which detects the position of the clutch brake system 7 of the cutting device by means of a mechanical connection. A control element 20 is connected between the comparator 29 and the clutch-brake system 7. The drive 25, here designed as a servo motor, is mechanically connected to the positioning system 13. A servo unit 26 is connected between the linking unit 27 and the drive 25. The operation of the cutting machine according to the invention is as follows:

With the clutch brake system 7, the motor 10 can be non-positively connected to the main shaft 9 of the cutting device by means of the control element 20. As a result, the cutting knives 4, 5 are set in motion, as a result of which the cutting knives 4 and 5 are cut out of phase. The position transmitter 19 transmits the positions reached in each case to the machine control 21, which exerts influence on the frictional connection between the clutch / brake combination 7 and the main shaft 9 via the control element 20. With this control element 20, the frictional connection can not only be produced, but the transmissible torque can also be changed. This results in a smooth engagement and disengagement and regulation of the position and speed of the material to be cut 3. Different positions can be approached reproducibly.

When the operating mode is integrated into a production line, the material to be cut 3 is fed into the stacking magazine 12 via a feed belt 11, from which it is conveyed with the positioning system 13 via the intermediate station 14 into the tongs loading station 15. After aligning the material to be cut 3 with the positioning stops 17 in the pliers insertion system 16, the material to be cut 3 is gripped and transported into the cutting station 2, after which the pressing is carried out with a pressing device (not shown). Furthermore, the side knives 5 can be cut and the front knife 4 can be out of phase. If the cutting sequence is to be reversed, the cutting device is moved to a different position during a set-up cycle, after which the front knife 4 first cuts without changing the direction of rotation of the main shaft 9. If a four-sided trimming of the material to be cut 3 is desired, the trimmed material 3 to be trimmed on three sides is conveyed back by means of the tong insertion positioning system 16 into the tong loading station 15, where a manual or by means of a rotary gripper system not shown in the drawing in automatic turning takes place. During this time, the cutting knives 4, 5 are moved into a position in which the side knives 5 have already been trimmed. It is also possible for the side knives 5 to cut a second time on the trimmed material 3, as a result of which the required position is reached. This is followed by the turning process of the material to be cut 3 and the renewed insertion, the pressing of the material to be cut and the cutting of the front knife 4.

In addition to other tasks in the human-machine dialog, setpoints are recorded on the operating unit 28 and fed to the linking unit 27. Corresponding control signals are transmitted from this to the servo unit 26, which controls the drive 25 of the positioning system 13. The position sensor 19 detects the position of the clutch brake system 7 and transmits the actual values to the comparator 29, which controls a control element 20 of the clutch brake system 7 with corresponding switching signals. Different technological sequences, as shown and described by way of example in FIGS. 2, 3, 5 and 6, can thus be achieved by specifying different setpoints or different combinations.

The four-side trimming method is explained in more detail with reference to FIGS. 5 and 6. 5 illustrates one of the possible methods for four-sided trimming. In a Cartesian coordinate system, the time is plotted on the abscissa x and the knife stroke and the movement sequence of the material to be cut 3 are plotted on the ordinate y. First there is a three-sided trimming, characterized by a cutting movement first of the side knives 5 and out of phase of the front knife 4. When the position in which the side knives 5 are in the movement towards the material to be cut 3 (downwards) is reached, the cutting knives 4, 5 are stopped . The material to be cut 3 is then conveyed from the cutting station 2 into the tong loading station 15. The cutting device is then moved into the position in which the front knife 4 is in the downward movement. Now you can insert it again of the material to be cut 3, which has now been turned manually or automatically, after which the front knife 4 is cut. The cutting cycle can start again after the feed system has been transported back.

Another possible method for four-sided trimming is explained with the aid of FIG. 6. First there is a three-sided trimming, characterized by a cutting movement first of all by the side knife 5 and out of phase by the front knife 4. The cutting device continues to move into the position in which the front knife 4 moves downward. There it is stopped. As a result, the side knives 5 run a second time on the material 3 to be cut and still located in the cutting station 2. The material to be cut 3 is then conveyed from the cutting station 2 into the tongs loading station 15. Now the cut material 3, which has meanwhile been rotated manually or automatically, is inserted again, after which the front knife 4 is cut. The cutting cycle can start again after the feed system has been transported back.

Such a cutting method for four-sided trimming is particularly interesting when it is integrated into corresponding production lines. One possibility is the inline-linked four-sided trimming behind a collating machine, for example for the production of loose-leaf collections. Since these are often in ring binders or the like a minimum of two holes must be drilled in the stack. For this, at least one drill must be provided before, after or during the four-sided trimming.

Another possibility is the inline chaining with a gathering machine before and for example a wire comb binding machine after the four-sided trimming. This means that inline binding with a wire comb is also possible for thicker products that can no longer be cut with a so-called Lumbeck cutter within the wire comb binding machine. Likewise, after the perfect binder and / or the addition seed carrying machine which trimmers are not suitable for larger heights.

If, in the automatic mode of operation, several blanks are to be cut out from a raw format 22 (multiple-blanks trimming), according to FIG. 3 the side cutters 5 are used to cut the raw format 22 and then to transport the separated raw format remainder 23 back using a transport system (not shown). This can be a carriage which is positively connected to the tongs loading station 15. After movement of the separated raw format remainder 23 from the front knife level, the front knife 4 is cut to produce the finished product 24 and, at the same time, the separated raw format remainder 23 is automatically positioned in the forceps inserting positioning system 16 by means of the positioning system 13 and the positioning stops 17. After the finished product 24 has been trimmed, this is done by the separated raw format residue 23 transported by the tongs insertion positioning system 16 is laid out on the delivery belt 18. Then either a normal three-sided trimming or another separating cut takes place.

Further possibilities of technological sequences are four-sided separating cut and separating cut in the return operation. In the latter case, the separated format 23 is conveyed back together with the finished trimmed panel 24 to the tongs loading station 15, whereby an operator can remove the material to be cut 3 by hand.

Reference list

I machine body 2 cutting station

3 material to be cut

4 front knives

5 side knives

6 Transmission 7 clutch brake system

8 belt drive

9 main shaft

10 engine

II feed belt 12 stacking magazine

13 positioning system

14 intermediate station

15 tongs loading station

16 pliers slide-in positioning system 17 positioning stops

18 delivery belt

19 position encoder

20 control

21 Machine control 22 Raw format

23 Remnant of the raw format

24 Ready-made benefits

25 drive

26 servo unit 27 linking unit

28 control unit

29 comparators

Claims

claims

1.Procedure for trimming material to be cut from paper materials or paper-like, stackable materials, in which in cyclically recurring cutting cycles of a cutting device two sides of the material to be cut can be cut at the same time and a third side thereof out of phase, and further upstream or subsequent process steps at least for realizing the Transport of the material to be cut can be carried out, characterized in that within a processing cycle each cyclically recurring cutting cycle of a mechanically inevitable cutting device in at least one position of the cutting knives (4, 5) of the cutting device according to a selectable, predetermined program sequence can be interrupted cyclically so that the the mechanical forced movement of the cutting device defined cutting cycle in the position of the cutting knife reached by the interruption sser (4, 5) can be continued according to the program sequence, the same material to be cut (3) being processed in or without a changed position or a different material to be cut (3) and / or that each interrupted phase of the cutting cycle for processing the same, position-changed or other material to be cut (3) can be repeated any number of times before starting the respective processing cycle.

A method according to claim 1, characterized in that the cutting sequence of the by the interruption of the cutting cycle in a predetermined position Cutting knives (4, 5) can be reversed and / or varied as desired and the movement of the cutting knives (4, 5) can be adapted to the height of the material to be cut.

3. The method according to claim 1 and 2, d a d u r c h g e k e n n z e i c h n e t that the direction of rotation for the movement of the cutting knife (4, 5) can be reversed from one position to another position.

4. The method according to any one of claims 1 to 3, characterized in that with a four-sided trimming of the material to be cut (3), first the parallel sides of the material to be cut (3) are cut simultaneously and the third side thereof out of phase, that the three-sided trimmed material to be cut ( 3) the cutting device is automatically removed and repositioned while the cutting device moves into such a position that the fourth side can be cut after the material to be cut (3) has been inserted again into the cutting station (2).

5. The method according to any one of claims 1 to 3, characterized in that the four-sided trimming of the material to be cut (3) takes place in that after the phase-shifted trimming of the parallel sides and the front side, a repeated cutting process of the parallel sides takes place, that the material to be cut ( 3) the cutting station (2) is automatically removed and repositioned and that after a new insertion of the material to be cut (3) into the cutting station (2) the fourth side of the material to be cut (3) is trimmed.

6. The method according to claim 4 or 5, characterized in that after the compilation of the material to be cut (3) by means of a collating machine and automatic transport to the cutting device, the four-sided trimming of the material to be cut (3).

7. The method according to any one of claims 4 to 6, so that after the four-sided trimming of the material to be cut (3) and automatic transport to a downstream wire comb binding machine, the material to be cut (3) is bound with a wire comb.

8. The method according to any one of claims 1 to 7, characterized in that the trimming of the material to be cut (3) is linked to a brochure section such that a benefit is first cut out from a raw format (22) by double-sided cutting, then the raw format residue (23rd ) is automatically removed from the cutting station (2), that the first blank (24) is then trimmed and that the raw format residue (23) is then automatically fed to the cutting station (2) for trimming on three sides and / or for cutting off and trimming another blank (24 ) is supplied.

9. The method according to any one of claims 1 to 8, that the cutting takes place in connection with at least one drilling operation of the material to be cut (3).

10. The method according to any one of claims 1 to 9, so that the positions of the cutting knives (4, 5) of the cutting device, in which the cutting cycle is interrupted, can be changed as desired by the operator's choice.

11.Device for trimming material to be cut from paper materials or stackable materials similar to paper material, consisting of a cutting device holding three cutting knives, in which two side knives cut at least three sides of the material to be cut simultaneously and one front knife out of phase, and further mechanisms for realizing at least the transport functions of the Material to be cut, characterized - net that the cutting device has at least one control loop or a control for defined interruption of the movement of the cutting knife (4, 5) and at least one control loop or control for positioning the material to be cut (3) that the control loops and / or controls designed and arranged in such a way are that at least one positioning system (13) and the knives (4, 5) of the cutting device can assume their positions defined by a selectable, predetermined program sequence at the same time or in succession, both devices being able to pass through their positions repeatedly or not at all during a processing cycle, and that the synchronization of the cutting device and the positioning system (13) takes place by means of a central control or system control (21).

12. The apparatus according to claim ll, dadurchgeken nz eichnet that the at least one control circuit or the at least one control for the defined interruption of the movement of the cutting knife (4, 5) essentially at least one position detection element (19), means (7) for interrupting the movement the cutting knife (4, 5), a control element (20) and a machine control or system control (21).

13. The apparatus according to claim 12, so that the means for interrupting the movement of the cutting knives (4, 5) are designed as a clutch / brake combination (7).

14. The apparatus according to claim II, characterized in that the at least one control circuit or the at least one control for positioning the material to be cut (3) essentially has at least one servo-driven positioning system (13, 25, 26) connected to a feed device (11) and comprises a linking unit (27).

15. The apparatus of claim 11, d a d u r c h g e k e n n z e i c h n e t that the central control or system control (21) is taken over by the central machine control.

16. The apparatus according to claim 11 and 12, characterized in that the control element (20) of the control circuit or the control for the cutting knife (4, 5) is designed such that there is a continuous control of the driving forces transmitted to the cutting knife (4, 5) can perform or moments.

17. Device according to one of claims 11 to 15, that the positioning system (13) is arranged between a stack magazine (12) and a tongs loading station (15).

18. Device according to one of claims 11 to 17, characterized in that the servo-driven positioning system (13, 25, 26) in combination with the machine control or system control (21) is designed such that the material to be cut (2) between the stack magazine ( 12) and the tongs loading station (15) can be moved into any position and these positions can be reproduced as often as desired with the same or different material to be cut (2).

19. Device according to one of claims 11 to 18, that the machine control or system control (21) of the control loops and / or the controls is designed such that the positioning device is deactivated for manual loading of the tongs loading station (15).

20. Device according to one of claims 11 to 19, characterized in that the means (7) for interrupting the movement of the cutting knives (4, 5) are designed so that the cutting knives (4, 5) in the broken state of their movement above the material to be cut (3), with the front knife (4) in at least one position and the side knife (5) in at least one further position in the initial region of the movement towards the material to be cut (3).

21. Device according to one of claims 11 to 20, characterized in that the machine control or system control (21) is designed such that the assignment of the interruption of the movement of the cutting knife (4, 5) to the cyclically recurring cutting cycle and the positions of the Cuttings (3) can be changed.

22. Device according to one of claims 11 to 21, d a - d u r c h g e k e n n z e i c h n e t that a protective device is provided between the tongs loading station (15) and the cutting device, which stops the cutting device when feeding unauthorized bodies into the cutting station (2).

23. Device according to one of claims 11 to 22, characterized in that an additional device can be connected to the cutting device for separating and trimming a plurality of panels (24) from a raw format (22), which additional device is designed and coupled to the control loops or controls that the separated raw format (23) after the first cut of the side knives (4) is transported back to the tongs loading station (15) and is automatically returned to the tongs loading station (15) by means of the positioning device, during which time, before or after the trimming of the Front knife (5) on the first panel (24).

24. Device according to one of claims 11 to 23, characterized in that for the four-sided trimming of the material to be cut (3), an additional device is connected to the pliers coating station (15) can be, which is designed as a rotary gripper system and is so coupled to the control circuits or controls that after the three-sided trimming of the material to be cut (3) is moved back to the tongs loading station (15), rotated there into the appropriate position and fed to the cutting device again .

25. Device according to one of claims 11 to 24, so that the loading and unloading operations are carried out with one or more tongs loading systems (15) in which a switch between manual and automatic tongs loading is possible.

26. The device as claimed in one of claims 11 to 25, so that means for reversing the direction of rotation of the driving shaft, preferably in the form of a reversing clutch, are provided within the drive system of the cutting device.