EP1182052A2 - Method and device for processing a printed product in sheet form - Google Patents

Abstract

The printed product treatment process is applied to book blocks (14) of printed sheets clamped in positon in a continuous product flow. During one sector of the transportation route, their spines are treated. While each book block is clamped, or while it is being fixed in position during transportation, at least one of its other three sides is cut.

Description

The invention relates to a method for processing a sheet-like printed product according to the preamble of the claim 1 and a device for processing a sheet Printed matter according to the preamble of the claim 12th

In the manufacture of sheet-like printed products, the so far consist of a book block and an envelope the related printed sheets are collected, processed on the back and connected, hung in the envelope and then on the head and foot side as well as the The front is trimmed to the final format.

For making particularly precise cuts with smooth and geometrically perfect cut surfaces become cutting cells used with so-called triple cutters, the single, or a stack of several stacked printed products, on the head, foot and front to cut. The precision of a three-cutter is based among other things, that the material to be cut with a press stamp is fixed and the knives, which are then attached to the Cut lines through the stack against a cutting bar work.

However, the operation of a triple cutter requires inside an intervention in the product flow on a book production line. So the printed matter must flow from the Product flow removed and then in unsteady movements to be processed further. This complicates the necessary Transport device, especially if additionally stacking, Unstacking and separation measures planned become. The requirements are also increasing the positioning accuracy. The cutting performance of a three-cutter is also on the number of stacked and in depending on one operation. The average cutting performance is reduced if to achieve particularly high quality cuts only stacks from a small Number of individual printed products may be formed.

EP 0 698 451 B1 describes a method and a device for trimming flat printed products along one given cutting line known. The printed products are folded horizontally on a rotating conveyor belt and get to a cutting device with the first one Head and foot trimming by two working against each other Knife is running. The cutting of the knives point in the direction of transport and are during the cutting movement carried a limited distance in the direction of transport.

The printed products are then transferred from the conveyor belt to the gripper hand over the printed products to another pair of knives feed, their cutting transverse to the direction of transport are aligned. The knives of the other pair of knives are guided by drives that have a cutting movement and at the same time a movement over a limited distance in Execute transport direction so that the printed products too during the trimming of the front can.

For envelopes that have folding flaps and their Project folded edges over the front of the book block is such a trimming to the final format not easily possible, otherwise the folded edges of the envelope shortened together with the front of the book block would.

EP 0 754 566 B1 describes a method for manufacturing known from books, magazines or brochures, in which the Face of the book block after hanging in the envelope is circumcised. For this purpose, the folded edges of the cover flaps from the line of intersection of the end face through at least partial lifting set back.

From Korean utility model publications KR 059 338 and KR 083 812 are cutting stations or bookbinding devices known with cutting stations in which the front of the Book blocks similar to EP 0 754 566 B1 after hanging is trimmed in the envelope. Here, too Cover pages first by partially lifting the Front of the book block set back. Then will the book block by merging two overlapping ones Cutting edges trimmed.

The invention has for its object a method and a device for processing a sheet-like printed product from book block and cover to improve that the book block in a continuous product flow is trimmed precisely.

This task is carried out in a method according to the generic term of claim 1 by the features of claim 1 and a device according to the preamble of claim 12 solved the features of claim 12.

Further developments and advantageous refinements of the invention result from the subclaims.

Due to the features of the solution according to the invention, according to which Book block while maintaining its restraint or its Fixation in position on at least one of his during transport If three sides are trimmed, the leadership remains. The geometrical position of everyone during clamping or the fixation carried out processing steps remains constant and is therefore targeted at each book block reproducible. This ensures precise dimensional accuracy of all printed products.

According to a further development, the book block can be on the front and / or be trimmed on the head and foot side.

The geometric reference of the cutting lines to the processing line on the back remains in any case.

Furthermore, the book block while maintaining its clamping or its position fix drilled during transport and / or punched and / or stapled.

The geometric remains during these processing steps Relation of the measures to all further processing steps received during clamping or fixation.

A training course provides that the book block is provided during or after one of the processing steps, such as back processing, Gluing, begazing, punching, punching, stapling, too while maintaining its fixation or positional fixation be trimmed during transportation becomes.

By maintaining the clamping or fixing the position of the printed matter during transport is constant Alignment and guaranteed. These are important Requirements for a true to size and reproducible Trimming. Since these requirements for the invention In principle, trimming can always be available at any time respectively. The freedom of design for implementation the trimming is significantly improved, so far unused transport sections can be used and thereby shorten the processing time and a corresponding Device can be designed much more compact can.

According to a further development, the book block is on its front can be pivoted in a fixed swivel bearing stored knife trimmed by putting the knife in Direction to the conveyed book block and one together carried with him over a limited distance Cutting bar is pivoted.

Preferably between the cutting edge of the knife and the Cutting bar included an acute angle that is in Transport direction opens.

Due to the fixed storage of the knife in connection with the transport movement of the book block during the cut the cutting movement transverse to the sheet layers becomes a longitudinal movement superimposed. The book block runs out of itself closing leg of the knife edge and the cutting bar out, whereby the cutting path is extended and the cutting process very evenly with largely constant Cutting force can take place. It automatically results here a knife guide, as is otherwise the case with three-knife trimmers can only be achieved with an elaborate gearbox for oscillating cuts would.

From the side opposite the cutting bar, one can Press stamps are pressed against the book block, which together carried a limited distance with the cutting bar becomes.

The press ram and the cutting bar are removed during the Carry out the cutting process parallel to the book block, see above that the individual sheets are stuck during the cutting process stay compressed and also on the outer leaf layers no damage caused by grinding marks.

In the case of further training, the trimming of the Book blocks on at least one of its three remaining pages this is attached to an envelope and connected to it.

This makes it easier to trim the front of a leaf Book block and cover printed in one continuous product flow.

In particular, it is provided that the envelope with folding flaps is formed, with the folded edges of the folding flaps can survive the front of the book block.

This makes it possible to print sheets in one to produce a continuous product stream in which the Front of the book block is cropped, although the cover extends beyond the front of the book block.

A further training provides that the procedural steps in a bookbinding process can be integrated.

This makes it possible to print the products at the same distance and same sequence as previous stations through, also into the cutter and the envelope feeder and transfer station and out again to transport it out. As a result, there are no adaptation measures necessary, as was otherwise customary, for one discontinuous process with the continuous transport movement to link.

The jig can put the book block between them hold bracket.

The book block can be guided very precisely from the start and positioned in the processing stations. There too the staple is moved together with the book block, damages they are not the outer sheet layers. Furthermore are the individual sheets of the book block are already compressed, before the punch is retracted at the cutting device becomes. This creates an annoying air cushion already eliminated between the sheets. The later Retracting the press ram then only causes a fixation of the leaves directly on the cutting line.

Fig. 1

in Queransicht eine Phase der Behandlung eines Buchblocks vor dem Schneidvorgang,

Fig. 2

eine Draufsicht der Darstellung nach Fig. 1,

Fig. 3

in Draufsicht eine weitere Phase der Behandlung eines Buchblocks während des Schneidvorgangs,

Fig. 4

eine Draufsicht der Darstellung nach Fig. 3,

Fig. 5

eine schematische Darstellung der erfindungsgemäßen Vorrichtung aus Spannvorrichtung, Schneidvorrichtung und Umschlagzuführ- und Anlegestation und

Fig. 6

eine perspektivische Darstellung eines aufgeschlagenen fertigen blattförmigen Druckerzeugnisses.

The invention is explained below using an exemplary embodiment which is illustrated in the drawing. The drawing shows:

Fig. 1

in transverse view a phase of the treatment of a book block before the cutting process,

Fig. 2

2 shows a top view of the representation according to FIG. 1,

Fig. 3

in plan view a further phase of the treatment of a book block during the cutting process,

Fig. 4

3 shows a top view of the representation according to FIG. 3,

Fig. 5

is a schematic representation of the device according to the invention from tensioning device, cutting device and envelope feed and lay-up station and

Fig. 6

a perspective view of an open sheet-like printed product.

The drawings are very simplified schematic diagrams, which are limited to the absolutely necessary construction elements. Opposed to a travel or transportation option an adjacent movable or fixed element to indicate, camp symbols are drawn in uniformly.

In Fig. 1 is a book block 14 to be cut with his Back side 24 on a clamping device 12, which is a slide, can be a cart or a conveyor belt. The Sheet layers of the book block 14 are aligned vertically. On the clamping device 12 brackets 22 are attached, which under Apply pressure to the sheet layers of the book block 14 and fix them. Each bracket 22 engages approximately halfway up of the vertical book block 14.

FIG. 2 shows a top view of the illustration according to FIG. 1, longitudinal arrows together the direction of movement of the book block 14 with the clamp 22 holding the clamping device Hint at 12.

Fig. 3 shows a transverse view of the cutting device. Above the bracket 22 is on the right side Cutting bar 26, which, like the tensioning device 12 is mounted for longitudinal displacement and together with the book block 14 is moved during the cutting process. The cutting bar 26 is a press stamp 28 opposite, which also is mounted for longitudinal movement and together with the book block 14 is operated. A stationary actuator 30 exerts a transverse force on the plunger 28, so that this against the book block 14 towards the Cutting bar 26 is pressed. Immediately above the Press stamp 28, a knife 32 is arranged, the one Performs cutting movement in the direction of the cutting bar 26.

Fig. 4 shows a plan view of the cutting device. It is indicated here that the cutting bar 26 along a stationary rail is movable. In contrast is the Press ram 28 movable relative to a movable rail, which in turn by means of an actuating device 30 in the form of a cam or crank drive transverse to the clamping direction is movable.

The knife 32 is pivotable in a stationary axis 34 stored and actuated by means of a rotary drive 36. there forms the cutting edge of the knife 32 together with the Edge of the cutting bar 26 an acute angle, which in Clamping direction is open. Reduced during the cutting process this angle. This will in addition to the cutting movement in the transverse direction to the sheet layers 16 also one Generated longitudinal movement, which is due to the transport, and superimposed this on the transverse movement. This gives one uniform and gentle treatment of the material to be cut.

The drives of the cutting device can directly with the drive be synchronized with the tensioning device. This simplifies it the coordination of movements. At the same time can also be made possible in a simple manner Changing the transport speed at the same time the speed at which the printed matter is changed be circumcised. However, this can differ if the material to be cut requires it. Similar to the front trimming is done, also the head and Be trimmed during transport. In this case, however, it is necessary to also use the knife during of the cutting process in the transport direction.

Fig. 5 shows a schematic representation of the invention Device from clamping device 12, cutting device and envelope feed and docking station and the invention Process. Here, the book blocks 14 by means of a clamping device 12 first to a cutting device and then in a continuous product stream transported to an envelope feed and docking station.

The transport chain shown here describes one oval way. This includes a first straight section on the the book blocks 14 are trimmed by the knife 36, and a second straight line opposite, where the trimmed Book blocks 14 hung in envelopes 16 and with these are connected.

The first straight line is shown in Fig. 5 below. Here is a book block 14 coming from the left by means of the Clamping device 12 clamped along the first straight line and promoted and during transportation in the Cut the cutting device by means of the knife 32. The one the book block 14 trimmed on the front then runs through that shown on the right side of Fig. 5 semicircular Oval, then on the second straight track to go through the envelope feeding and loading station. There the book block is hung in an envelope 16 and with connected to this.

The finished sheet-like printed product from book block 14 and Envelope 16 is designated by the number 10.

Fig. 6 shows a perspective enlarged view of a finished sheet-like printed product 10 from book block 14 and cover 16. Book block 14 is on its back 24 connected to the envelope 16. The envelope 16 has via folding jaws 18, the folding edges 20 of the folding jaws 28 protrude at the front of the book block 14 can.

LIST OF REFERENCE NUMBERS

10

Printed Media

12

jig

14

book block

16

envelope

18

jaw

20

folding edge

22

clip

24

back page

26

cutting bar

28

press die

30

actuator

32

knife

34

axis

36

Rotary actuator

Claims (22)

A method of processing a sheet-like printed product (10) in a continuous product stream, wherein a book block (14) is clamped and processed on the back during a portion of its transport, characterized in that the book block (14) while maintaining its clamping or fixing its position during the Transport is trimmed on at least one of its three remaining sides. A method according to claim 1, characterized in that the book block (14) is trimmed on the front. A method according to claim 1 or 2, characterized in that the book block (14) is trimmed at the top and bottom. Method according to one of claims 1 to 3, characterized in that the book block (14) is drilled and / or punched and / or stapled while maintaining its clamping or fixing its position during transport. Method according to one of claims 1 to 4, characterized in that the book block (14) before, during or after one of the processing steps, such as back processing, gluing, Begazen, punching, punching, stitching, which also while maintaining its clamping or fixing its position during of the transport are trimmed. Method according to one of claims 1 to 5, characterized in that the front of the book block (14) is trimmed by a knife (32) pivotally mounted in a fixed pivot bearing (34) by the knife (14) in the direction of the conveyed Book block (14) and a cutting bar (26) carried along with it over a limited distance is pivoted. A method according to claim 6, characterized in that an acute angle is formed between the cutting edge of the knife (32) and the cutting bar (26), which opens in the transport direction. A method according to claim 6 or 7, characterized in that a press stamp (28) is pressed against the book block (14) from the side opposite the cutting bar (26) and is carried along a limited distance together with the cutting bar (26). Method according to one of claims 1 to 8, characterized in that the book block (14) is hooked into an envelope (16) and connected to it only after trimming on at least one of its three remaining pages. A method according to claim 9, characterized in that an envelope (16) is inserted, which has folding flaps (18), the folding edges (20) of the folding flaps (18) projecting from the front of the book block (14). Method according to one of claims 7 to 10, characterized in that the process steps are integrated in a bookbinding process. Device for processing a sheet-like printed product (10) in a continuous product stream with a clamping device for clamping or a fixing device for fixing the position of a book block (14) during the transport to processing stations, wherein a processing station is designed for back processing during a partial section of the transport path, characterized in that that a cutting device for trimming at least one of the three remaining pages of the book block is arranged in the course of the transport path of the tensioning device, which is continuously closed during transport, or is engaged. Device according to Claim 12, characterized in that the cutting device comprises a knife (32) for trimming the front of the book block (14). Apparatus according to claim 12 or 13, characterized in that the cutting device comprises knives for trimming the top and bottom of the book block (14). Device according to one of claims 12 to 14, characterized in that processing stations for drilling and / or punching and / or stapling the book block are arranged in the course of the transport path of the clamping device which is continuously closed during transport or in which the fixing device is engaged. Device according to one of claims 12 to 15, characterized in that the cutting device in the course of the transport path of the clamping device which is continuously closed during transport or in engagement with the fixing device before, on or after processing stations, in particular for back processing, for gluing, gassing, punching, punching , Stapling is arranged. Apparatus according to one of Claims 12 to 16, characterized in that the cutting device for trimming the front side comprises a knife (32) which is pivotably mounted in a fixed swivel bearing (34) and which is directed towards the further conveyed book block (14) and one together with the latter Cutting bar (26) carried along over a limited distance can be pivoted. Apparatus according to claim 17, characterized in that the cutting edge of the knife (32) with the cutting bar (26) forms an acute angle which is open in the transport direction. Apparatus according to claim 17 or 18, characterized in that a press ram (28) is arranged on the side opposite the cutting bar (26) which can be pressed against the book block (14) and can be carried together with the cutting bar (26) for a limited distance. Device according to one of claims 12 to 19, characterized in that the clamping device (12) comprises a bracket (22) holding the book block (14) between them. Device according to one of claims 12 to 20, characterized in that a station designed as a cover feeder is arranged in the transport direction behind the cutting device or at least behind the knife serving to trim the front of the book block. Device according to one of claims 12 to 21, characterized in that the device is an integral part of a bookbinding system or is integrated into the product stream of a bookbinding system.

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