EP0963281B1 - Method and device for cutting cuttable material from paper materials or paperlike stackable materials - Google Patents

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

The invention relates to a method for trimming of material to be cut from paper materials or similar to paper materials, stackable materials, in which in cyclically recurring Cutting cycles of a cutting device in each case two sides of the material to be cut at the same time and a third Side can be trimmed out of phase and others upstream or subsequent process steps at least to realize the transport of the Cuttings are performed using the procedure below Use of the associated arrangement is performed.

The invention further relates to a device for trimming material to be cut from paper materials or paper-like, stackable materials, consisting of from a cutting device holding three cutting knives, with two side knives at the same time and a front knife trim at least three sides of the material to be cut out of phase, and other mechanisms for realizing at least the transport functions of the material to be cut.

Cutting machines are known in which the cutting, pressing and and positioning movements mechanically inevitable become. For example, in DE 40 33 437 A1 and in DE 41 13 081 A1 proposed such a cutting device, mechanical mechanical coupling with loading and unloading devices (for example curve-controlled slide-in and delivery systems) a mechanically inevitable cutting machine form. Such machines are both widespread integrated in brochure ranges (inline machines) as well less often than single machines (offline) in use. So lets on these machines with simple mechanical means achieve an inevitable sequence of functions. The disadvantage is here that one determined by the mechanical forced run Sequence of work cannot be changed by the operator. Thereby on the one hand, if slow movements are required a single sub-function the whole machine with less Working at speed, on the other hand, only once planned technological sequence (e.g. stack from magazine in Convey cutting station, press, cut on three sides, pressing loosen, lay out stack) are processed.

Furthermore, machines with so-called sequence control and in mechanically inevitable cutterbars known. Here the cutting units, the pressing, the slide-in systems and possibly the delivery is controlled by separate drives. The link is made 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 differentiated Achieve tax consequences. The continuous operation is usual, an operator cutting the material into the insertion system promotes, after which the stack is trimmed fully automatically and is then laid out to 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 just one person.

Multi-pruning is common, with two or three Benefit by using appropriate technological sequences cut out of additional components from a raw format become. So far, multiple-use trimming has only been used for manual tongs loading and only used on offline machines, so that additional dividing saws on brochure lines must be used. So far, machines with sequence control used in which the cutting device during of the cyclically recurring processing cycle in just a fixed position (basic position) can be moved. For under certain circumstances, the knife change is the automatic start another position. This is chosen that a collision-free change of all knives is possible. is. On all known such machines is only that Cyclic recurring start-up by the machine manufacturer position during the processing cycle possible, which results in only a few technological sequences to let.

DE 195 16 047 A1 describes two separate drives (digital controlled servo or stepper drives) for the front and the side knives suggested. In addition, each is autonomous Drives provided for the pressing and transport mechanisms. In addition to the large energy demand peaks, this is disadvantageous and the associated high connection costs, that the required tight chronological order of both separately driven knife types large precautions for Avoiding a collision between the knives is required. in the In the event of an error, the resulting damage is very large.

DE 41 10 621 A1 discloses a device with a non-uniform transmission from grade 2 to moving both Knife types, with the first degree of running by a main and the second degree of running is tied up by a power take-off becomes. In addition to the advantage of mechanical restraint and the absence of collisions between the two types of knife With this drive principle, the majority of the required Energy from a main drive supported by a flywheel be made available so that the network loads and connection costs are kept low. Disadvantageous is the high effort to re-implement this solution.

Applications are also known in which the individual Knife types driven directly by hydraulic cylinders become. In addition to the collision protection expenses incurred the disadvantage of the undefined average occurs on. In contrast to the otherwise used Crank drives where the average position is independent of knife speed and cutting resistance alone the dead position of the mechanism is determined with these Machines can be cut very deep into the cutting bars. to secure the average under all conditions. This leads to increased blunting of the knives. Farther lacks the property of crank drives that at low Height of use by the translation of the dead center considerably greater cutting force can be applied, with which the trimming of very hard material to be cut. On the known disadvantages of hydraulic drives (efficiency, Energy requirements, leakage problems related to the cutting paper) should also be noted. Also work such three-knife cutting machines not in the oblique swing cut. The parallel swing cut used on these machines achieves significantly larger gates as the entire knife is immediately engaged in the area of use stands. Greater wear, especially the knife and one The result is a reduction in the quality of the cut.

Methods of wire comb binding are known, whereby according to a Gathering machine a trimmer for four-sided trimming is arranged. After trimming, the benefits are with a Wire comb bound. The disadvantage here is that due to the How the trimmer works (die cut in two stations) achievable cut quality only acceptable with small block thicknesses is.

In another process, book blocks are passed through a booklet stretch (Collating machine, perfect binder, three-knife cutting machine) manufactured. Before wire comb binding cutting the previously made on the perfect binder Back with a Lumbeck cutter. It is advantageous here that the achievable block thickness up to three cutting meets all requirements. In addition to the additional disadvantage Gluing effort that the Lumbeck cutter only one can cut small block thickness, so that the finished bound Book block manually with high workload in smaller Blocks must be separated.

It is therefore an object of the invention to provide a method for trimming of cuttings of the type mentioned above 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 another object of the invention, an associated device to create with which the inventive method safely and technologically easy to implement in a cost-effective manner is. The method and device should also be in can easily integrate conventional processing lines and enable new machining processes.

According to the invention, the object is achieved by a method the preamble of claim 1 solved in that every cyclically recurring within a processing cycle Cutting cycle of a cutting device in which the knife are inevitably connected, in at least one Position of the cutting knife of the cutting device accordingly recurring a selectable, predetermined program sequence can be interrupted by the mechanical forced cutting cycle determined by the cutting device in the position reached by the interruption of the Cutting knife continued according to the program can be, the same cutting material in or without changed Position or another material to be processed further and / or that every interrupted phase of the cutting cycle for processing the same, changed position or different Material to be cut before starting the respective processing cycle can be repeated any number of times.

With this process sequence according to the invention, it is possible the advantages of crank driven cutting machines also for a four-sided trim and for inline multiple-use trimming to use. It can cut the knife in the oblique swing cut operated, creating a high average accuracy of the material to be cut is reached. The procedure is inexpensive to implement because of changeover times are eliminated or minimized or machining processes, that are normally carried out on different machines, be taken over by the cutting machine.

In addition, transport routes and means of transport become in this way and saved labor.

It is also advantageous that the process is economical both inline-operated as well as applicable to individual machines. Integration in brochure lines or production lines allows new machine and labor-saving technological Procedures.

After an advantageous development of the invention The process can be stopped by interrupting the cutting cycle given position, the cutting sequence of the cutting blades reversed and / or arbitrarily varied and the position of the cutting knife to be changed.

This enables a wide variety of cutting sequences through an appropriately preprogrammed program selection can be set on the cutting machine. The customization the sequence of movements shortens the process, because the cutting knife movement on any preprogrammed point can be interrupted.

It is also advantageous that according to the method, the Direction for moving the cutting knives from one in selectively reverse another position.

This increases the variability of the cutting sequences without that there are transport or positioning processes of the material to be cut is absolutely necessary.

According to the method according to the invention, that with a four-sided trimming of the material to be cut first the two parallel sides of the material to be cut trimmed simultaneously and the third page out of phase be that the three-sided trimmed Cuttings are automatically removed from the cutting device and is repositioned while the cutter is in moved such a position that after reinserting the Cut the fourth side of the material to be cut into the cutting station can be.

Mechanically inevitable within one work cycle working three-sided cutting machine is thus trimming of all four pages, for example of a book at high Average accuracy possible. The process will thereby shortened that simultaneously with the transport and Positioning processes of the material to be cut the positioning of the cutting knife he follows. However, this process sequence requires Safety devices on the machine to prevent injury to prevent.

According to another embodiment of the process sequence, the invention provided that the four-side trim of the Cuttings are made in that after trimming the three sides a repeated cutting of the third side takes place that the cutting material of the cutting station is automatically removed and repositioned and 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 you are also at risk of an accident Avoid four-sided trimming by Schneidugt because it triggers a cutting movement of the knives to the presence of a Material to be cut is coupled in the cutting area. However, must after this solution be accepted that the repetition the cutting process of the third page by itself setting minor deviations of positions from The material to be cut and the cutting knife may damage each other caused on the material to be cut.

According to the invention, a new processing technology of Material to be cut within a production line is achieved that after the compilation of the material to be cut by means of a Gathering machine and automatic transport to the cutting device the four-sided trimming of the material to be cut Vibrational cut is made.

This makes operations such as gluing the book block or the brochure and the detachment of the back after the Three-sided trimming saved with a Lumbeck cutter. In addition, the disadvantage of the Lumbeck cutter becomes hereafter (Trimming only small block heights possible) avoided, so there is no need to split large blocks into several small ones, which in turn is the amount of time spent on manufacturing minimized from 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.

Here, too, additional and known methods are no longer required for four-sided trimming of material to be cut - Machining operations that are separate in the process flow require integrated machines, such as Perfect binder and Lumbeck cutter.

A new technological process flow one into one Brochure range of integrated cutting machines will also thereby achieved that a benefit from a raw format is cut out by double-sided cutting, afterwards the raw format residue is automatically taken from the cutting station is that the final trimming of the first benefit and that afterwards the raw format remainder automatically the Cutting station for three-sided trimming and / or for cutting off and pruning its further benefit.

After this solution, both working hours, as well Transport effort and that for the separation process of the raw format saved in single-use cutting machines previously used.

Technologically advantageous is also when trimming in connection with at least one drilling operation of the Can be cut.

Thus, the material to be cut can be cut at the same time or or trimmed on four sides and with a perforation for one Ring binding can be provided.

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

According to the invention, the object is further achieved by a device solved according to the preamble of claim 11, that the cutting device has at least one control loop or a control to interrupt the movement in a defined way the cutting knife, which are inevitably connected to each other, and at least one control loop or controller for positioning of 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 knife of Cutting device their by a selectable, predetermined Program sequence positions at the same time or one after the other can take, the positioning device and the blades of the cutter take their positions during run through a processing cycle several times or not at all can, and that the synchronization of the cutting and the Positioning device by means of a central control or System control takes place.

The cutting device according to the invention is particularly advantageous in terms of cost and time saving in all known Embodiments of cutting machines can be used. The control loops or controls in connection with the machine control or system control and the programming device allow use of the cutting device in both Inline as well as offline operation with any sequence of Cutting sequence or the working cycle. The structural execution the cutting device in connection with the positioning device happens in a cost effective way because expensive electronic Control units are eliminated.

According to an advantageous embodiment of the cutting device comprises the at least one control loop or the at least one controller to interrupt the defined Movement of the cutting knife essentially at least one Position detection element, means for interrupting the movement the cutting knife, a control element and a machine control or system control.

The means to interrupt the movement of the Cutting knife designed as a clutch-brake combination.

This structurally simple design allows a safe Interrupting 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 carried out equally in a constructively simple manner in that the at least one control loop or the at least one controller for positioning the material to be cut essentially at least a servo-driven connected to a feeder Positioning system and a linking unit comprises.

If the central control or system regulation from the central Machine control is taken over, there are no more Control devices for the control of the control loops or the controls.

According to another embodiment of the device according to the invention is the control element of the Reigelkreis respectively the control for the cutting knife designed such that it a stepless regulation of the transferred to the cutting knife Can execute driving forces or moments.

This is a wear-resistant and impact-optimized application enables the cutting device.

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.

This allows the material to be cut on the way from the stacking magazine to Tongs loading station or from the cutting device to the tongs loading station in any and position specified with respect to the position of the cutting knives be fed to the tongs loading station.

The servo-driven positioning system in combination with the Machine control or system regulation is after another advantageous embodiment such that the Material to be cut between the stacking magazine and the tong loading station can be moved to any position and these positions with the same or different material to be cut can often be reproduced.

This ensures that any material to be cut is accurate can be positioned.

The control element of the control loops and / or the controls is designed such that for manual loading of the tongs loading station the positioning device is overridden is set. This makes the variable usability of the Cutting device significantly increased because manual loading for example for trimming individual books or Brochures can be run.

To prevent collisions and to ensure a safe automatic insertion in and an equally safe Removal of the material to be cut from the cutting station is provided, that the means to interrupt the movement of the cutting knife are designed so that the cutting knife in the interrupted State of their movement above the material to be cut stand, with the front knife in at least one position and in at least one other position the side knives in the beginning of the movement towards the material to be cut.

To ensure offline operation of the machine during of the inline operation, the control device is designed such that manually assigning the interruptions by operator selection the movement of the cutting knives to the cyclically recurring Cutting cycle and the positions of the material to be cut changed can be.

According to the invention, a protective device is also between the tongs loading station and the cutting device provided, which when feeding unauthorized bodies stops the cutting device in the cutting station.

This is to prevent accidents when the cutting blades move without being present of cutting material avoided in the cutting station become.

After a further advantageous embodiment of the invention Device can be used for separating and trimming several Use an additional device from a raw format the. Cutting device are connected, which are formed in this way and with the control loops respectively. Controls is coupled that the separated raw format after the first performed cut of the side knives to the tongs loading station transported back and there again by means of the positioning device automatically the tongs loading station is supplied, during this time, before or afterwards the cutting of the front knife at the first use he follows.

Also with this additional device that can be arranged on the cutting machine is achieved that the cutting machine and time-saving in inline operation of any processing technology can be assigned. It is an advantage also that this assignment ensures that the existence of the Cuttings can be made with high precision, the maximum possible cutting height can be used. The Separating the raw format into two or more uses will work as well advantageously carried out on the three-knife cutting machine a four-sided bleed.

Another preferred embodiment provides that for four-sided trimming of the material to be cut an additional device can be connected to the pliers coating station which is designed as a rotary gripper system and thus with the control loops or controls is coupled that after the three-sided trimming of the material to be cut to the tongs loading station is moved back there into the corresponding Position rotated and the cutter again is fed.

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

The variable usability of the cutting machine will be explained in the following also ensured that the loading and unloading operations with one or more tong loading systems take place where switching between manual and automatic tongs loading is possible.

To ensure that the direction of rotation during a work cycle the drive of the cutting device can be changed can, it is provided according to the invention that within the drive system the cutter means for reversing the Direction of rotation of the driving shaft, preferably in the form a reversing clutch are arranged.

Fig. 1

die schematische Darstellung einer Schneideinrichtung zum mindestens dreiseitigen Beschnitt.

Fig. 2

die schematische Darstellung einer erfindungsgemäßen Schneidemaschine,

Fig. 3

die schematische Darstellung der erfindungsgemäßen Schneidemaschine während des Schneidens mehrerer Nutzen aus einem Rohformat (Trennschnitt) bei vollautomatischer Arbeitsweise,

Fig. 4

das Steuerschema einer erfindungsgemäßen Schneidemaschine,

Fig. 5

das Bewegungsdiagramm der Messer und des Schneidgutes bei Vierseitenbeschnitt und dreifachem Wechsel der Position der Messer innerhalb eines zyklisch wiederkehrenden Arbeitstaktes und

Fig. 6

das Bewegungsdiagramm der Messer und des Schneidgutes bei Vierseitenbeschnitt und zweifachem Wechsel der Position der Messer innerhalb eines zyklisch wiederkehrenden Arbeitstaktes.

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

Fig. 1

the schematic representation of a cutting device for at least three-sided trimming.

Fig. 2

the schematic representation of a cutting machine according to the invention,

Fig. 3

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

Fig. 4

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

Fig. 5

the movement diagram of the knives and the material to be cut with four-sided trimming and triple change of the position of the knives within a cyclically recurring work cycle and

Fig. 6

the movement diagram of the knives and the material to be cut with four-sided trimming and twice changing the position of the knives within a cyclically recurring work cycle.

Fig. 1 shows schematically a cutting device. Are there in a machine body 1, to which a cutting station 2 characteristic cutting table for receiving the material to be cut 3 is assigned two cutting mechanisms for the side knives 5 and the front knife 4 arranged. Both mechanisms will with mechanical. Average inevitably through a gear 6 connected with each other. The main shaft 9 of the cutting device is with a clutch-brake combination controlled by a control element 20 7 with flywheel and pulley connected to a motor 10 in via a belt drive 8 There is a connection. With the main shaft 9 is a position sensor 19 inevitably connected, as well as the control 20 in operative connection with the machine control 21 stands.

Fig. 2 shows the most essential in a sectional view Parts of a cutting machine according to the invention. On the machine body 1, a feed belt 11 is attached at one end there is a stack magazine 12. Below the stacking magazine 12, a positioning system 13 is arranged so that it in Active connection with an intermediate station 14 and one Forceps loading station 15 stands. Between this and the Cutting station 2 is a tong insertion positioning system 16 arranged with positioning stops 17. On the other hand the machine body 1 is a delivery belt 18. Das Cuttings 3 are in the cutting station 2.

3 shows the cutting machine in a sectional view with fully automatic operation for multiple-use trimming. A feed belt 11 is attached to the machine body 1, at one end there is a stack magazine 12. Below the stacking magazine 12 is a positioning system 13 so arranged that it is in operative connection with an intermediate station 14 and a tongs loading station 15. Between this and the cutting station 2 is a tong insertion positioning system 16 arranged with positioning stops 17. On the other side of the machine body 1 there is a Delivery belt 18. In the individual functional stations 11, 12, A raw format 22 is shown in each case 14, 15. In the Cutting station 2 is the finished product 24, on a Transport system, not shown, next to the cutting station 2 is the separated raw format 23.

4 shows a control diagram of a cutting machine according to the invention. Inside the machine controller 21, which is programmed as a memory Control (PLC) are one Linking unit 27 and a comparator 29 realized. The Linking unit is in operative connection with an operating unit 28, while the comparator with the position encoder 19 interacts, which by means of mechanical connection Position of the clutch brake system 7 of the cutting device detected. Between the comparator 29 and the clutch brake system 7, a control element 20 is switched. The drive 25, designed here as a servo motor, has a mechanical connection with the positioning system 13. Between the linking unit 27 and the drive 25, a servo unit 26 is connected.

The mode of operation of the cutting machine according to the invention is the following:

With the clutch brake system 7 can by means of the control element 20 the motor 10 with the main shaft 9 of the cutting device be frictionally connected. This will make the Cutting knife 4, 5 set in motion, causing a phase-shifted Cutting the cutting knife 4 and 5 is reached. The position transmitter 19 transmits the respectively achieved Positions to the machine control 21, which via the Control 20 influence the adhesion between the Clutch-brake combination 7 and the main shaft 9 exercises. With this control element 20 can not only produce the frictional connection, but also changed the transmissible torque become. This ensures a smooth engagement and disengagement a regulation of position and speed of the Material to be cut 3. Different positions can be reproduced be approached.

When operating in a production line the cutting device 3 reaches the stacking magazine via a feed belt 11 12, of which it is with positioning system 13 the intermediate station 14 into the pincer coating station 15 is promoted. After aligning the material to be cut 3 with the positioning stops 17 in the pliers insertion system 16 gripping the material to be cut 3 and transporting it in the cutting station 2, after which the pressing in with one shown. Pressing device is carried out. Furthermore, the Cut of the side knives 5 and out of phase of the front knife 4 done. If the cutting sequence is to be reversed, the Cutting device during one setup cycle into another Move the position, after which the Main shaft 9 first cuts the front knife 4. Becomes a four-sided trimming of the material to be cut 3 is desired the material to be cut 3 trimmed on three sides by means of the pliers insertion positioning system 16 back to the tong loading station 15 promoted where a manual or by means of a not shown in the drawing. Rotary gripper system in automatic turning takes place. During this time the Cutting knife 4, 5 moved to a position in which the Have already cut side knife 5. It is also possible that the side knives 5 on the trimmed material 3 cut a second time, creating the required position is achieved. Then the turning process of the Material to be cut 3 and the reinsertion, the material to be cut and the cut of the front knife 4.

On the control unit 28, among other tasks of Human-machine dialog setpoints and the linking unit 27 fed. From this are corresponding control signals to the servo unit 26, which transmits the drive 25 controls the positioning system 13. The position transmitter 19 detects the position of the clutch brake system 7 and transmits the actual values to the comparator 29, which with corresponding Switching signals a control element 20 of the clutch brake system 7 controls. By specifying different setpoints respectively. different links can thus be different technological sequences, as exemplified in Figures 2, 3, 5 and 6 shown and described, achieve.

The four-side trimming method is illustrated in FIGS. 5 and 6 explained in more detail. Fig. 5 illustrates one of the possible Four-sided trimming process. In a Cartesian The coordinate system is on the abscissa x the time and on the ordinate y the knife stroke and the movement of the Cutting material 3 applied. First, there is a three-sided Trimming, characterized by a cutting movement initially the side knife 5 and out of phase of the front knife 4. At Reach the position in which the side knives 5 in the movement towards the cutting line 3 (downward) the cutting knife 4, 5 stopped. Then that will Cutting 3 from the cutting station 2 into the tong loading station 15 promoted. Then the cutter in the position in which the front knife 4 in the downward movement. Now you can insert it again of the material to be cut, which has now been turned manually or automatically 3, after which the front knife 4 is cut. After return transportation of the insertion system, the cutting cycle can be repeated kick off.

Another possible method for Four-sided bleed explained. First, there is a three-sided Trimming, characterized by a cutting movement initially the side knife 5 and out of phase of the front knife 4. The cutting device moves on without stopping in the position in which the front knife 4 is down emotional. There it is stopped. This makes the side knives run 5 a second time on the cut and continue in the Cutting station 2 located from 3. Subsequently the material to be cut 3 is removed from the cutting station 2 into the tongs loading station 15 promoted. Now the next one takes place Insertion of the now manually or automatically rotated Material to be cut 3, after which the front knife 4 is cut. After the feed system has been transported back, the cutting cycle can be started start again.

Such a cutting method is particularly interesting for four-sided trimming when integrated into the corresponding Production lines. One possibility is the inline-chained four-sided trimming behind a gathering machine, for example for the production of loose-leaf collections. This one often in ring binders or similar is used is at least one double drilling of the stack required. To do this, at least a drill before, after or during the four-sided Trimming should be provided.

Another option is inline chaining with one Gathering machine in front and, for example, a wire comb binding machine after cutting on the demivating side. Thus one. Inline binding with wire comb also for stronger products that with a so-called Lumbeck cutter inside the wire comb binding machine can no longer be cut, possible. Can also after the perfect binder and / or the collating machine not suitable for larger heights Trimmer to be replaced.

If automatic mode of operation is to be used, several benefits from one Raw format 22 are cut out (multiple-use trimming), 3 with the side knives 5 the separation cut of the raw format 22 and then the return transport the separated raw format remainder 23 with a not shown transport system. This can be done with the tongs loading station 15 positively connected cars. After moving the separated raw format remainder 23 from the Front knife level, the front knife 4 is cut to Production of the finished product 24 and at the same time the automatic Position the separated raw format remainder 23 in Plier slide-in positioning system 16 by means of the positioning system 13 and the positioning stops 17. After trimming of the finished product 24 this is achieved by the pliers insertion positioning system 16 transported separated raw format remnants 23 designed for the delivery belt 18. Then follows either a normal three-sided bleed or a another cut.

Four-sided separating cuts are further possibilities of technological sequences and separating cut in the return operation. With the latter the separated format 23 is finished together with the conveyed trimmed panel 24 back to the tongs loading station 15, an operator the cutting material 3 of Hand can remove.

Reference list

1

Machine body

2nd

Cutting station

3rd

Clippings

4th

Front knife

5

Side knife

6

transmission

7

Clutch brake system

8th

Belt drive

9

Main shaft

10th

engine

11

Feed belt

12th

Pile maid

13.

Positioning system

14

Intermediate station.

15

Forceps loading station.

16

Plier slide-in positioning system

17th

Positioning stops

18th

Delivery belt

19th

Position encoder

20th

Control

21

Machine control

22

Raw format

23

Remnant of the raw format.

24th

Ready-made benefits

25th

drive

26

Servo unit

27

Linking unit

28

Control unit.

29

Comparator

Claims (26)

1. A method for trimming cutting material from paper materials or paper material-like stackable materials for which, in cyclically recurring cutting cycles of a cutting device, in each case, two sides of the cutting material can be trimmed simultaneously and a third side can be trimmed out of phase, and to further preceding or subsequent process steps, which are carried out at least for realizing the transport of the cutting material, characterized in that, within a processing cycle, each cyclically recurring cutting phase of a mechanically positive cutting device can be interrupted in a cyclically recurring manner in accordance with a selectable specified program in at least one position of the cutting knives (4, 5) of the cutting device; that the cutting phase, fixed by the mechanically controlled movement of the cutting device in the position of the cutting knives (4, 5), reached by the interruption, can be continued in accordance with the program, it being possible to continue to process the same cutting material (3) with or without a changed position or a different cutting material and/or that each interrupted phase of the cutting phase, for processing the same, position-changed or other cutting material (3) repeatedly as often as desired before the respective processing cycle, is ended.
2. The method of claim 1, characterized in that, due to the interruption of the cutting phase in a specified position, the cutting sequence of the cutting knives (4, 5) can be reversed and/or varied at will and the position of the cutting knives (4, 5) changed.
3. The method of claims 1 and 2, characterized in that the direction of rotation for the movement of the cutting knives (4, 5) can be reversed alternately from one position to another.
4. The method of one. of the claims 1 to 3, characterized in that, for a four-sided trimming of the cutting material (3), in each case initially the parallel sides of the cutting material (3) are trimmed simultaneously and the third side is trimmed during an offset phase and that subsequently the cutting material (3), trimmed on three sides, is automatically taken from the cutting device and positioned anew, while the cutting device moves into such a position that, after the renewed insertion of the cutting material (3) into the cutting station (2), the fourth side can be trimmed.
5. The method of one of the claims 1 to 3, characterized in that that the four-sided trimming of the cutting material (3) takes place owing to the fact that, after the phase-offset trimming of the parallel sides and the front side, a repeated cutting process of the parallel sides takes place, that subsequently the cutting material (3) is removed automatically from the cutting station (2) and positioned anew and that, after a renewed insertion of the cutting material (3) into the cutting station (2), the fourth side of the cutting material (3) is trimmed.
6. The method of claims 4 or 5, characterized in that, after the cutting material (3) is assembled by means of an assembling machine and transported automatically to the cutting device, the four-sided trimming of the cutting material (3) takes place.
7. The method of one of the claims 4 to 6, characterized in that, after the four-sided trimming of the cutting material (3) and the automatic transport to a downstream wire comb binding machine, the cutting material (3) is bound with wire comb.
8. The method of one of the claims 1 to 7, characterized in that the trimming of the cutting material (3), tied into a booklet line, takes place in such a manner that, to begin with, copies produced from one sheet are cut from an untrimmed format (22) by two-sided cutting, after which the remainder of the untrimmed format (23) automatically is taken from the cutting station (2), that, subsequently, the final trimming of the first copies produced from one sheet (24) is carried out and that, thereafter, the remainder of the untrimmed format (23) is supplied automatically to the cutting station (2) for the three-sided trimming and/or for the severing and trimming of a further copy produced from one sheet (24).
9. The method of one of the claims 1 to 8, characterized in that the trimming takes place in conjunction with at least one drilling process of the cutting material (3).
10. The method of one of the claims 1 to 9, characterized in that the positions of the cutting knives (4, 5) of the cutting device, in which the cutting phase is interrupted, can be varied at will according to the choice of the operator.
11. An apparatus for trimming cutting material from paper materials or paper material-like stackable materials consisting of a cutting device, accommodating three cutting knives, for which at least three sides of the cutting material are trimmed simultaneously by two side knives and out of phase by a front knife, and to further mechanisms for realizing at least the transport functions of the cutting material, characterized in that the cutting device has at least one control circuit or a controlling device for the defined interruption of the motion of the cutting knives (4, 5) and at least one regulating circuit or a controlling device for positioning the cutting material (3),

    that the regulating circuits and/or control devices are constructed and disposed in such a manner, that at least one positioning system (13) and the knives (4, 5) of the cutting device can assume their positions, fixed by a specified program that can be selected, simultaneously or consecutively, both devices being able to pass through their positions repeatedly or not at all during a processing cycle,

    and that the cutting device and the positioning system (13) are synchronized by means of a central controlling device or an equipment regulating system (21).
12. The apparatus of claim 11, characterized in that at least one regulating circuit or the at least one controlling device for the defined interruption of the motion of the cutting knives (4, 5) comprise essentially at least one position-determining element (19), means (7) for interrupting the motion of the cutting knives (4, 5), a control element (20) and a machine controlling device or a plant regulating device (21).
13. The apparatus of claim 12, characterized in that the means for interrupting the movement of the cutting knives (4, 5) are constructed as a coupling-braking combination (7).
14. The apparatus of claim 11, characterized in that the at least one regulating circuit or the at least one controlling device for positioning the cutting material (3) comprises essentially at least one positioning system (13, 25, 26), which is connected with a feeding device (11) and is servo-driven, and a linking unit (27).
15. The apparatus of claim 11, characterized in that the central controlling device or the plant regulating device (21) is taken over by a central machine controlling device.
16. The apparatus of claims 11 and 12, characterized in that the control element (20) of the regulating circuit or the controlling device for the cutting knives (4, 5) is constructed in such a manner that the driving forces or the driving torques, transferred to the cutting knives (4, 5), can be regulated infinitely variably.
17. The apparatus of one of the claims 11 to 15, characterized in that the positioning system (13) is disposed between a stacking magazine (12) and a gripper loading station (15).
18. The apparatus of one of the claims 11 to 17, characterized in that the servo-driven positioning system (13, 25, 26), in combination with the machine controlling device or plant regulating device (21), is constructed in such a manner, that the cutting material (2) can be moved to any position between the stacking magazine (12) and the gripper loading station (15) and that these positions can be reproduced as often as desired with the same or a different cutting material (2).
19. The apparatus of one of the claims 11 to 18, characterized in that the machine controlling device or the installation regulating system (21) of the regulating circuit and/or of the controlling devices are constructed in such a manner that, for loading the gripper loading station (15) manually, the positioning device is switched off.
20. The apparatus of one of the claims 11 to 19, characterized in that the means (7) for interrupting the motion of the cutting knives (4, 5) are constructed so that the cutting knives (4, 5), in the interrupted state of their motion, are above the cutting material (3), the front knife (4), in at least one position, and the side knives (5), in at least another position, being in, the starting region of the motion towards the cutting material (3).
21. The apparatus of one of the claims 11 to 20, characterized in that the machine controlling device or the equipment regulating device (21) is constructed so that, by operator choice, the assignment of the interruption of the movement of the cutting knives (4, 5) to the cyclically recurring cutting phase and the positions of the cutting material can be changed.
22. The apparatus of one of the claims 11 to 21, characterized in that a safety device is provided between the gripper loading station (15) and the cutting device, stopping the latter when impermissible bodies are supplied to the cutting station (2).
23. The apparatus of one of the claims 11 to 22, characterized in that additional equipment can be connected with the cutting device for cutting off and trimming several copies produced from one sheet (24) of an untrimmed format and is constructed and coupled with the regulating circuits or controlling devices in such a manner, that the cut-off untrimmed format (23), after the first cutting step of the side knives (4) is carried out, is transported back to the gripper loading station (15) and supplied there once more, by means of the positioning device, automatically to the gripper loading station (15), the trimming of the front knife (5) at the first copies produced from one sheet (24) taking place during, before or after this time.
24. The apparatus of one of the claims 11 to 23, characterized in that additional equipment can be connected with the gripper loading station (15) for the four-sided trimming of the cutting material (3) and constructed as a twist gripper system and is coupled with the regulating circuits or the controlling devices in such a manner, that the cutting material (3), after being trimmed on three sides, is moved back to the trimmer loading station (15), rotated there into the appropriate position and supplied once more to the cutting device.
25. The apparatus of one of the claims 11 to 24, characterized in that the loading and unloading processes are carried out with one or more gripper loading systems (15), for which it is possible to switch over between manual and automatic gripper loading.
26. The apparatus of one of the claims 11 to 25, characterized in that, within the driving system of the cutting device, means for reversing the direction of rotation of the driving shaft, preferably in the form of a reversing coupling, are provided.

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