DE10124068A1 - Automatic positioning and cutting device has two orthogonal and phase-offset cutting knives fixed spatially relative to each other independently of format - Google Patents

Abstract

The invention relates to a device and a method for the automatic positioning and trimming of material to be cut from paper materials or paper material-like, stackable materials, in particular for triple-sided trimming of bound printed products, consisting essentially of a cutting arrangement with phase-offset, orthogonally cutting knife types, at least one transport and / or positioning unit, a rotating unit for rotating the material to be cut about the vertical axis and a pressing device for pressing the material to be cut during the cutting process. DOLLAR A According to the invention, in order to solve the task, which consists in reducing the changeover effort and the constructional and therefore investment effort, while at least maintaining the high cutting quality achieved so far, the device provides that two knives (4, 5 ) have a fixed spatial association with each other regardless of format, and that the rotating unit (11) and the pressing device (12) are likewise arranged in the device in a fixed and format-independent manner.

Description

The invention relates to a device for automatic Positioning and trimming paper products fabrics or stackable materials similar to paper materials lien, especially for three-sided trimming of bound Printed matter, consisting essentially of a Cutting arrangement with out of phase, orthogonal to each other cutting knife types, at least one transport and / or positioning unit, a rotating unit for rotating the Material to be cut around the vertical axis and a pressing device for pressing the material to be cut during the cutting process.

The invention further relates to a method for automa tables positioning and trimming material to be cut from Pa pier materials or similar to paper materials, stackable Materials, especially for three-sided trimming of bound printed matter in a cutting system in which Cuts automatically into the cutting area before trimming the cutting machine transported, positioned there and is fixed.

Cutting machines are known in which the three or more side trimming by manually aligning the material to be cut against positioning stops, by subsequent manual  Triggering of cutting processes, manual further turning, Turning and / or positioning movements of the material to be cut and other manually triggered cutting operations is achieved. In particular, this procedure creates books or brochures in small and medium runs by cutting three times with one turn between cuts and once turned.

A disadvantage of these methods is the low attainability Hourly output, the time-consuming preparation of Press dies, the usual face cutter on the press beam brought and the high operating effort. An automation This procedure is likely to be difficult to implement.

The document US 006 012 367 A proposes a document tailor who also cuts with a knife, whereby moving and rotating the material to be cut by one turn gripper system takes place. With this arrangement, a higher one Automation achieved that goes hand in hand with a certain Performance increase. However, she is out to trim the book unsuitable for several reasons. On the one hand, the handling takes place only by turning and positioning. Since the cutting direction of the Knife is always the same, so it has to be in the spine cut, which will tear it out. On the other hand requires the recess in the table for the rotary gripper system relatively large formats, small formats are possible with this procedure not producible. Furthermore, there are no references to Avoid the pressure build-up given on the book spine, so that this solution for trimming bound printing materials nissen is unsuitable or there will be damage to the Book spine accepted. In addition, the effectiveness by cutting three times and handling twice borders. The achievable cutting accuracy due to the amount The number of work steps can be estimated as relatively low.

In three-knife machines known the three-sided be cut by simultaneously cutting a knife type, the page knife, on the book head and foot and out of phase  orthogonal to it on the front. These machines have on due to the high level of automation and the achievable high levels Cutting quality found and will be widely used mainly used in the medium and high circulation area. The disadvantage of this solution is the high investment and Changeover effort when changing formats and the associated Downtimes of the brochure routes due to diverse Actuators, interchangeable parts and accessories are created.

There are three different ways to reduce this downtime automatic cutters with so-called automatic format changeover known. The existing adjustment drives were used automated, which saves time with an increased Investment was bought.

DE 197 20 042 C2 proposes a method and a device for three-sided trimming, in which the corresponding Working movements are carried out by positioning drives. In order to the effort could be reduced, but the disadvantage required replacement parts, especially press plates, Cutting tables, knives, various stops still exist.

There are no solutions on all known three-knife machines for the fully automatic change of all necessary change parts known. Furthermore, all such machines the construction of press dies using bookbinding Skill required, their trimming in many cases the knives damaged. This disadvantage affects in particular for short runs.

DE 198 43 011 A1 describes a method and an apparatus for described at least four-sided trimming, in which Cuttings positioned, on two orthogonal to each other Pages trimmed, rotated 180 ° and again orthogonally will cut. This is a fully automatic four-sided Trim possible. A disadvantage here is the lack of Suitability of this method for three-sided book trimming of the high changeover effort, which is the changeover effort known three automatic cutters still exceeds.  

It is therefore an object of the invention to provide a device for automa tables positioning and trimming paper materials or paper-like, stackable materials lien, especially for three-sided trimming of bound To further develop printed products so that the changeover effort especially with small support heights of the material to be cut and the constructive and thus investment costs can be reduced can, with the high cutting quality achieved so far at least should be maintained.

It is a further object of the invention to provide a method for automatic positioning and trimming of material to be cut Paper materials or similar to paper materials, stackable Materials, especially for three-sided trimming of ge bound printed matter, with which the material to be cut Time-saving and cost-saving, both processed and transported and can be positioned.

According to the invention, the task on the device side is thereby solved that two orthogonal and out of phase with each other cutting knives a fixed spatial have order to each other and that the rotating unit and the Press device also fixed and independent of format in the Device are arranged.

With this device according to the invention it is achieved that at Change of format of the material to be cut Conversion work is not necessary. This reduces downtimes times of the cutting machine to a minimum, which is special positive when processing cut material with short runs heights and changing formats. With this device formats of various sizes can be processed. The Cutting quality or accuracy is only depending on the quality of the cutting knife.

In a preferred embodiment of the invention known three-knife cutting machines are used, however, it must be accepted that at least one the knife performs cutting operations without contact with the material to be cut.  

It is advantageous if a pliers position as the positioning unit nier system is used, the shifting processes occur, between and after the cutting operations and the cutting holds good stacks together.

Clamp positioning systems of this type are known, but are usually only for positioning processes before or after Pruning used. With the variable use of the Zangenpo sitioning system is a fully automatic positioning of the Material to be cut ensures that the stack of material to be cut is the same held together early and thus in the same position within of the stack is held.

According to another advantageous development of the Invention According to the solution, the turntable has a lower turntable and an upper turntable, between which the material to be cut stack is fixed. The turntable can be moved vertically arranged and both the vertical movement and the Drehbe movement around the vertical axis is carried out automatically.

The turntable preferably rotates the material to be cut by 90 ° or 270 ° horizontally and are arranged so that their distance from the Cross knife is smaller than that of the side knife.

Rotation and / or displacement processes can be constructive according to this simple execution can be carried out fully automatically, whereby the individual processes both in time and in series can be varied as desired.

According to another advantageous embodiment, the Press device a three-part press plate, with a Part is firmly connected to the press and the two other parts each along one of the knife cutting lines are slidably mounted.

With the use of this three-part press plate according to the invention The changeover effort is also reduced because the press plate is independent of format. It is also secured represents that the pressing device the material to be cut on both  Cutting lines with a minimum distance to the cutting blades presses, which increases the cutting quality.

According to the invention, the upper part is in the fixed part of the press plate Turntable pivotally and vertically displaceable.

This ensures that after releasing the pressure by the Press plate the material to be cut remains fixed in its position since the turntables hold the stack together. After solving this The pliers positioning system takes over the function of the pressing Stack cohesion.

Especially for the three-sided trimming of material to be cut Form of books is provided according to the invention that the ver sliding parts of the press plate spaced Have recesses that are designed such that in the book spines between each cutting position Cutting table and press plate are fixed.

This ensures a high quality of the trimmed material performs because the spine, which is usually higher than the actual one Books, when pressed, are dependent on the format of the Bü bare in one of the recesses and therefore not be can be damaged.

It is also advantageous if the movable parts of the Press plate to adapt to different formats automa are designed to be positionable. This is what happens if to reduce downtime.

The lower turntable is according to another advantageous and structurally simple embodiment swivel and vertical Slidably mounted in the cutting table, forms one with it flat surface and is only used for the rotation cal shifted.

For design reasons, it is also possible to remove the top of the Turntables at a short distance below the cutting Arrange the table surface to reduce the quality of the cutting verstapels on its contact surface on the cutting table  avoid.

The object of the invention is furthermore procedural solved that first a first cutting process is carried out in the phase-shifted two at right angles to each other arranged sides of the material to be cut, where the material to be cut up to the immediate cutting line area in the compressed state is maintained that after that the Cuttings with at least partial release of the pressing automa table around the vertical axis in the further cutting position rotated, pressed again and then at least the third page is cropped or that depends on the respective format of the After the pressure has been released, the material to be cut is additionally horizon valley shifted into the further cutting position and ver is pressed before the further cutting process for trimming the at least third side of the material to be cut and that then another stack of cut goods is automatically the same or other format fed to the cutting system for processing and the trimmed cuttings from the cutting area of the Cutting system is removed.

With this process sequence according to the invention that becomes full automatic processing of material to be cut in a cutting system possible. Manual positioning operations are completely eliminated. The Operator only performs programming and monitoring operations out, so that also in this regard essential work relief has been noted.

According to the invention it is provided that the material to be cut between two cutting operations is rotated by 90 ° or 270 °. Zwischenpo sitions can also be realized, are in the Usually not required.

Another advantage is if by the uncircumcised Material to be cut with the transport and positioning processes in the Cutting position the material already cut from the Machining area is pushed onto a conveyor belt.

This eliminates the need for further handling operations for transportation  animals of the processed material to be cut.

In order to reduce the quality of the material to be cut, especially when loading cutting stacks of books to prevent being invention in accordance with pressing the stack close to the cutting line cut, keeping the spine free of load.

The invention is illustrated below using an exemplary embodiment explained. The associated drawings show in

Fig. 1 is a schematic representation of an inventive device for three-sided trimming of material to be cut in side view,

Fig. 2 shows the plan view of FIG. 1 with the fully automatic Functioning,

Fig. 3, the method according to three-sided trimming schematically an example of two different formats,

Fig. 4 is a detailed view of the cutting machine in lung Schnittdarstel,

Fig. 5a shows the basic structure of a press plate with prinzi pielle representation of the material to be cut when performing the phase-shifted angular cut and

Fig. 5b, the press plate according to Fig. 5a showing the material to be cut after performing the turning process.

According to FIGS. 1 and 2, the apparatus body consists of the machine 1, to which a cutting table 2 is fixed, on which the is to be trimmed Schneidgutstapel. 3 In Ma machine body 1 two orthogonal to each other and orthogonal to the cutting table arranged cutting mechanisms are seen before, one cutting mechanism carrying the cross knife 4 and the other cutting mechanism the side knife 5 . Such devices are known from three-knife machines and are intended to be used here. A feed belt 6 is firmly connected to the machine body 1 at the beginning of a feed area 7 . At the end of the feed area 7 , a tong loading station 8 is provided, in which positioning stops 9 and a tong positioning system 10 are arranged. In the area of the cutting table 2 , the rotating unit 11 and the pressing device 12 and behind the cutting table 2 , the delivery belt 13 is arranged. Further, mounted in the cutting table 2, an articulated manner to the rotary drive 14 and the short-stroke cylinder 15 connected lower turntable 16 drehge. Above the material to be cut 3 and with the Pressein device 12 is firmly connected to the press plate 17 , in which the upper turntable 18 is pivotally and vertically displaceable against a spring 19 .

FIGS. 5a and 5b show the construction of the pressing device 12 from the die 17, which is composed essentially consisting of three sub-plates 20, 21 and 22. The sub-plate 20 is fixedly connected to the pressing device 12 and in it the upper turntable 18 is rotatably articulated and vertically displaceable. The two other partial plates 21 and 22 are each slidably supported along the cutting lines 23 and 24 for the transverse knife 4 and the side knife 5 . The exact positioning of the two movable partial plates 21 and 22 depends on the respective format and can be set automatically or manually. For this purpose - as will be explained in detail below - stationary actuators are provided which automatically position the partial plates 21 and 22 .

According to FIGS. 5a and 5b, the partial plates 21 and 22 are mounted on guides 25 , 26 for setting the exact position, which are fixed to the fixed plate 20 connected to the pressing device 12 . Actuators 27 , 28 and adjusting spindles 29 , 30 , which are also arranged on the fixed part 20 of the press plate 17 , are in operative connection with a spindle nut 31 or 32 , each of which is attached to one of the partial plates 21 or 22 . Clamping devices 33 , 34 are fixedly attached to the partial plates 21 and 22 , so that they fix the partial plates 21 and 22 in the desired position via the guides 25 , 26 outside of the adjustment process.

In particular, for the processing of stacks of books it is hen that the partial plates 21 and 22 are spaced out with recesses 35 , 36 in the form of grooves which are arranged in the plane of the book spine and can thus be fixed load-free between the cutting table 2 and press plate 17 , In order to provide these grooves 35 , 36 for any format, the three-part structure of the press plate 17 is necessary, the nu-bearing sub-plates 20 , 21 being displaceable along the cut edges by a defined amount.

The operation of the invention is explained below with reference to FIGS. 3, 4, 5a and 5b.

Uncut trimmed material 3 reaches the feed area 7 via the feed belt 6 , through which it is conveyed into the tongs loading station 8 by means not shown. Using the positioning stops 9 , the material to be cut 14 is aligned in a tong positioning system 10 , gripped by it and conveyed onto the cutting table 2 . There, a press force is built up by means of the press device 12 via the press plate 17 . As a result, the upper turntable 18 is placed on the material to be cut 3 and deflects until it forms a flat surface with the press plate 17 . Then the phasenver set orthogonal cutting of the transverse knife 4 and the side knife 5th

After the cutting material 3 has been trimmed on two sides, for example the top and front, the main pressure is reduced and the pressing plate 17 is raised slightly, whereby it may only be raised to such an extent that the upper rotary plate 18 causes the material to be cut 3 against the lower rotary plate by spring action 16 pressed. The short-stroke cylinder 15 is then extended, as a result of which the lower turntable 16 with the material 3 to be cut is lifted out. The tong positioning system 10 is brought out of stack contact during these operations, as shown in FIG. 4, so that when the lower turntable 16 is subsequently rotated by means of a rotary drive 14 and the cut material 3 and the upper turntable 18 connected therewith, no collision of the cut material 3 with the tong positioning system 10 can occur.

After the turning process by a defined angle, preferably by 90 ° or multiples thereof, the short-stroke cylinder 15 is retracted and thus the lower turntable 16 is lowered well with the cutting 3 . In the meantime, the tongs positioning system 10 has moved back to the material to be cut 3 still pressed between the turntables 16 and 18 and has gripped it. Now the pressing device 12 opens completely, whereby the Drehlel lerpressung is canceled. The tongs positioning system 10 now conveys the material to be cut 3 to the next trimming position. Then again the main pressure is built up by means of the press plate 17 and the phase-shifted cut of the two types of knife, with the three-sided trimming possibly the cut of the side knife 5 without stack contact. However, this empty cut can be avoided if the knife types 4 , 5 can be driven separately or the knife 5 is brought out of contact with the cutting bar. In Fig. 3 the cutting and positioning processes are shown schematically.

After the trimming, the pressing device 12 opens completely and the trimmed material 37 remains on the cutting table 2 , while the tongs positioning system 10 returns to the tongs loading station 8 in order to fetch the next untrimmed trimmed material 3 , when it is conveyed to the cutting table 2, the previously trimmed material Material to be cut 37 is pushed onto the delivery belt 13 .

The press plate 17 must have the shape shown in FIGS. 5a and 5b, at least when trimming bound printed products, such as books, to avoid a reduction in the quality of the spine. The book spines protrude into the grooves 35 , 36 of the partial plates 21 and 22 , respectively, during the cutting processes, so that the book spines are free of load in these areas. For exact positioning of the grooves 35 , 36 to the spine of the material to be cut 3 , the partial plates 21 and 22 can be moved by a certain amount in their position either manually or automatically.

LIST OF REFERENCE NUMBERS

1

machine body

2

cutting table

3

be cut

4

cross knife

5

Seitenmesser

6

infeed

7

feeding

8th

Pliers loading station

9

positioning

10

tong

11

rotary unit

12

Pressing device.

13

delivery belt

14

rotary drive

15

Short stroke

16

lower turntable

17

press plate

18

upper turntable

19

feather

20

fixed part plate

21

subpanel

22

subpanel

23

Cross knife cut line

24

Side knives cut line

25

guide

26

guide

27

servomotor

28

servomotor

29

adjusting spindle

30

adjusting spindle

31

spindle nut

32

spindle nut

33

clamping device

34

clamping device

35

recess

36

recess

37

trimmed clippings

Claims (14)

1.Device for the automatic positioning and trimming of material to be cut from paper materials or paper-like, stackable materials, in particular for three-sided trimming of bound printed products, essentially consisting of a cutting arrangement with staggered, orthogonally cutting knife lines, at least one transport and / or Positioning unit, a rotating unit for rotating the material to be cut about the vertical axis and a pressing device for pressing the material to be cut during the cutting process, characterized in that two knives ( 4 , 5 ) that cut orthogonally and out of phase with one another have a fixed spatial association with one another regardless of format, and that the rotating unit ( 11 ) and the press device ( 12 ) are also fixed and independent of the format in the device. 2. Device according to claim 1, characterized records that well-known three-knife cutting machines are used. 3. Apparatus according to claim 1 and 2, characterized in that a tong positioning system ( 10 ) is used as the positioning unit, which performs the shifting operations before, between and after the cutting operations and holds the stack of cut material ( 3 ) together. 4. The device according to claim 1 to 3, characterized in that the rotary unit ( 11 ) has a lower turntable ( 16 ) and an upper turntable ( 18 ), between which the stack of cut material ( 3 ) is fixed, that the turntable ( 16 , 18 ) are arranged to be vertically displaceable and both the vertical movement and the rotary movement about the vertical axis are carried out automatically. 5. The device according to claim 4, characterized in that the turntable ( 16 , 18 ) horizontally rotate the material to be cut ( 3 ) by 90 ° or 270 ° and that these are arranged such that their distance from the transverse knife ( 4 ) is smaller than that to the side knife ( 5 ). 6. The device according to claim 1 and at least one of claims 2 to 5, characterized in that the pressing device ( 12 ) has a three-part pressing plate ( 17 ), a partial plate ( 20 ) being fixedly connected to the pressing device ( 12 ) and the two other partial plates ( 21 , 22 ) are each slidably mounted along one of the cutting lines ( 23 or 24 ). 7. The device according to claim 6, characterized in that in the fixed part ( 20 ) of the press plate ( 17 ) of the upper turntable ( 18 ) is rotatably and vertically displaceably mounted. 8. The device according to claim 6 and 7, characterized in that for the three-sided trimming of cut material ( 3 ) in the form of books, the displaceable partial plates ( 21 , 22 ) of the press plate ( 17 ) have spaced recesses ( 35 , 36 ), which are designed in such a way that the book spines are fixed in a load-free manner between the cutting table ( 2 ) and the press plate ( 17 ) in each cutting position. 9. The device according to claim 6 to 8, characterized in that the displaceable partial plates ( 21 , 22 ) are designed to be automatically positionable for adaptation to different formats. 10. The device according to claim 1 and at least one of claims 2 to 9, characterized in that the lower turntable ( 16 ) is rotatably and vertically displaceably mounted in the cutting table ( 2 ), forms a flat surface with this and only for the execution of the Drehbe movement is shifted vertically. 11.Procedure for the automatic positioning and trimming of material to be cut from paper materials or materials similar to paper material, stackable materials, in particular for three-sided trimming of bound printed products in a cutting system, in which the material to be cut is automatically transported to the cutting area of the cutting system prior to trimming, positioned and fixed there is characterized in that first a first cutting operation is carried out, in which two sides of the material to be cut ( 3 ) arranged at right angles to one another are trimmed, the material to be cut ( 3 ) being pressed together up to the immediate cutting line region ( 23 , 24 ) becomes,
that the material to be cut ( 3 ) is then automatically rotated about its vertical axis into the further cutting position when the pressing is at least partially released, pressed again and then at least the third side is trimmed, or that, depending on the respective format of the material to be cut ( 3 ), after the pressing has been released is additionally shifted horizontally into the further cutting position and pressed again before the further cutting process for trimming the at least third side of the material to be cut ( 3 ) takes place,
that a further stack of material to be cut ( 3 ) of the same or different format is then automatically fed to the cutting system for processing and the trimmed material ( 37 ) is removed from the cutting area of the cutting system. 12. The method according to claim 11, characterized in that the material to be cut ( 3 ) is rotated between two cutting operations by 90 ° or 270 °. 13. The method according to claim 11 or 12, characterized in that the untrimmed material to be cut ( 3 ) with the transport and positioning operations in the cutting position pushes the already cut material stack ( 37 ) from the processing area onto a conveyor belt. 14. The method according to claim 11 to 13, characterized in that the trimming of books is stacked under the cutting line pressing the cutting good ( 3 ), the book spines are kept load-free.