EP1344655B1 - Device for producing glue bound book blocks and brochures, particularly for small batches - Google Patents

Description

The invention relates to a device for producing adhesive bindings of blocks and brochures, in particular for short runs according to the preamble of claim 1 and to a method for producing adhesive bindings of blocks and brochures, in particular for short runs according to the preamble of claim 10.

For perfect bindings, as part of the production of brochures previously stacked pile of layers on the back processed by milling, then glued and then hung in an envelope. The envelope is firmly glued to the block back.

In certain particular types of leaflets, the cohesion of the leaves is achieved by a Fälzelstreifen, which is firmly glued to the back and also glued laterally to the first and last sheet of the block. The envelope is glued to the block only laterally, on one or both sides, near the back. For such a production of various types of devices are known. Common to all solutions is that first a Fälzelstreifen and then the envelope is placed on the block back.

For the production of adhesive bound blocks for hardcover, the block must be provided in accordance with bookbinderischer kind of and behind with a flyleaf. Often, the back processing is not made when it is z. B. thread-stitched blocks, thread sealing or Perfobindung. In any case, the back is glued and then gefälzelt.

In the bookbinding industry devices for the production of perfect bindings are common, which can perform all the described operations. However, these are in any case machines with complex operating principles that can not be used economically for short runs.

The feed of flyleaf and Nachsatzblatt designed in all these machines always very problematic when the block back is to be milled in the perfect binding. This has the following reasons:

The endpapers are usually introduced into the feed transport before the transport system of the actual perfect binding device. Because of the Abfräsens on the back, the extension leaves are added to the Fräsmaß raised against the back, taped near the Rückenfalzkante and pressed against the block. By this procedure, glue contamination and oblique sticking of the attachment leaves are often brought about.

Because of the possible Anklebedifferenzen the extension leaves must be set higher by a certain tolerance, so they are not cut during milling.

Thus, they are not exactly at the back level after milling and can therefore not be intensively connected to the back of the block with the help of the back glue.

If a folding station is to be provided in a device for the production of blocks and folder brochures, this leads to a very long adhesive binder device.

In the case of attachment attachment, the supply area of the adhesive binding device is considerably extended, and thus the overall length of the installation. This is completely unacceptable, especially in the short run sector.

Another weak point of known devices of the type mentioned is generally also the delivery device, especially in compact adhesive binder systems, because the fresh back glued blocks often fall out of the transport system on a slide, with which they are brought from the vertical to the horizontal position. In other versions, they are placed on a longitudinal transport, on which they are transported helically in the horizontal position. The fresh blocks are distorted diagonally and the back glue is claimed accordingly.

In order to avoid the quality disadvantages of the products, a cross-stack delivery device is therefore often used in slow-running adhesive binding devices, in which the blocks are pushed out at right angles to the transport direction, so that they are stacked standing on their backs. However, this display does not allow inline coupling with a following machine or dryer line.

Another problem with the perfect binder delivery device when processing leaflets and in particular leaflets with envelopes on the envelope is the release from the stapling system after the envelope has been pressed because the opening staple ruptures the lateral adhesion of the envelope to the block and when the flap collapses Sheets at milled blocks

In another embodiment, the opening of the bond is prevented by transfer of the block in staple trucks, which hold together the block laterally in the area of Seitenleimung. However, kinks often occur in the envelope close to the back when it comes to thicker cover material.

The present invention is based on the described prior art, the object of a better quality and more economical processing of

Hardbacks, brochures and bookletlets especially for smaller Auflagengrössenr to allow.

This object is achieved with respect to the device by the characterizing features of claim 1 and with respect to the method by the characterizing features of claim 9, wherein particular embodiments of the invention will become apparent from the features of the dependent claims referred to the claims.

The device according to the invention is a linearly arranged system with a step by step forward block transport by a reciprocating transport device. Two opposite, belonging to the transport clamping rails, which are guided in a suitable manner, thereby clamp by an opening and closing movement of the blocks or paper stack to be transported.

The individual blocks are transported in at least two steps through the processing stations of the device, wherein always a certain area of the clamping rails of the corresponding processing station is assigned and therefore can be adapted in its shape. During the return of the clamping rails, the blocks are held according to the invention by an additional holding device in the reached position. This results in at least two phases of motion and at least two stoppage phases during the transport of a block.

Both in the phases of motion as well as in the standstill phases, machining operations take place at the block

The automatically fed or manually inserted directly blocks are stapled in the import position by the clamping rails, transported in the first step on the back processing to the first standstill position in which the application of the flyleafs, optionally the supply of Fälzelstreifen and the

Rückenbeleimen done while the clamping rails run back to their original position.

The area of the clamping rails, which clings the block for the first step, can be designed for transport over the milling machine so that the block has only a small notice. This achieves an optimally straight milling surface. For the side gluing and the pressing of Fälzelstreifen and envelope does not bother the low notice, as he would do with conventional adhesive binding devices, because the thus formed part of the clamping rails during these machining operations is not engaged.

In the first standstill position of the block is held by a holding device, while the actual block transport device runs back to its original position. This fixture is tuned by the design to the operations taking place in this position.

According to the invention, the endpapers are first fed at this point in a manner known per se by rotary feeders after the block back has already been milled off. They are aligned by a stop plate under the back of the block exactly flush with the block back.

Malpositioning, milling of the flyleaf and the line-shaped auxiliary gluing are excluded in this way. The leaves are completely integrated into the back glue. It achieves better quality with a simplified procedure

The gluing of the back is carried out by a under the back transversely to the transport direction of the block by a Beleimhub back and forth moving glue roller. The glue application is determined by a scraper. During the return stroke, the glue pot is lowered slightly in order to avoid contact between the glue roller and the block back, which in the meantime may have been provided with a selvedge strip. It releases the scraper, which determines the glue application strength. The reverse-rotating glue roller rinses away any glue soiling on the scraper.

Applying and settling of the glue film on the head and foot of the blocks can be achieved by simple scraper on the glue roller. The glue limit on the block back can be made much more accurate than when gluing in the transport direction with cyclically controlled scrapers, as is known in the art. The relatively slow movement of the glue roller avoids the build-up of undefined back pressure, which can lead to glue runs in the block.

Dirt on the glue scraper, which creates a narrow glue-free track on the glue roller, does not lead to the non-sticking of leaves and the interruption of the back glue in the direction of stress, as is the case with longitudinal gluing.

For gluing with hotmelt adhesives, a double roller can also be arranged in the glue pot, wherein each of the two rollers can apply a different thickness of glue film.

When not performing the Fälzelvorgangs a double gluing can also be achieved by the return stroke of a glue roller by z. B. the pre-stroke a thin glue film with close contact to the block back and the return stroke a thick glue film with a greater distance of the glue roller is applied to the block back. The lowering movement of the gluing unit during the return stroke is limited to the generation of the distance of the glue roller to the block spine.

The application of the Fälzelstreifens is coupled with the Rückenbeleimen motion. A pivotable suction plate connected to the gluing unit picks up the cut-to-length trimming strip and presses it against the block back surface at the end of the gluing stroke. The feeding of the Fälzelmaterials takes place as usual in the Querfälzelung. Coming from the roll, the web material is driven by rollers and further transported by a certain, the width of the Fälzelstreifens amount, fed to a cross-cutting device and cut there. When cutting the Fälzelstreifen to be cut off is already fixed by the suction plate.

In the next step, the block is again detected by the clamping rails of the transport device, transported via the Seitenbeleimung to the second standstill position and transferred there in a gradually rotating star boom.

The block is now clamped by another area of the clamping rails, where the side gluing is not hindered and by appropriate design space for the envelope when pressing is created.

The Stemausleger with star-shaped block clamps takes over the block for pressing the envelope or the Fälzelstreifens.

The pressing of the envelope is done in a conventional manner, first on the back and then on the sides. The lateral Andrückung takes place definitively, if the clamping rails have left the pressure range in the return stroke and thus the envelope can create without strong bending to the block and the lateral bonding is not torn after loosening the lateral Andrückschienen.

By a pivoting step of the star boom, the block is swung out with the envelope from the supply area of the transport device and thereby brought from the vertical almost in the horizontal position. The new block can now be fed. The deposited block is released from the export bracket of the star boom and placed on an export belt, where it is further transported back first and can be done inline coupling with subsequent machines. For hand picking the delivery device is arranged in an ergonomically favorable height.

The stapled storage of the single block spares the fresh Rückenbeleimung and avoids cracks in the glue film and deformations of the block.

The envelope is fed from the opposite direction so that, for reasons of accessibility and clarity, the paths from block and envelope to the merging position do not intersect and overlap. The envelopes can also be created in ergonomically favorable height.

The envelope is exactly aligned with the block position at standstill of the individual block, whereby a high positional accuracy can be achieved.

Fig. 1

eine Seitenansicht der erfindungsgemäßen Vorrichtung,

Fig. 2

eine Draufsicht auf die erfindungsgemäße Vorrichtung,

Fig. 3

einen Schnitt durch die Vorsatzblattanlege-, Fälzelstreifenzuführ- und Beleimstation und

Fig. 4

eine Schnitt durch Andrückstation und die Auslagevorrichtung

The invention will be described with reference to the accompanying drawings with reference to an expedient embodiment. It shows:

Fig. 1

a side view of the device according to the invention,

Fig. 2

a top view of the device according to the invention,

Fig. 3

a section through the flyleaf, Fälzelstreifenzuführ- and Beleimstation and

Fig. 4

a section through Andrückstation and the delivery device

The stepwise transport of a single block is carried out by the transporting device 1 with the reciprocating clamping rails 1a, the upper guide 1b and the lower guide 1c. The stroke in the transport direction is generated in each case via rack drives 2, which engage respectively in a rack 3 on the clamping rails 1a.

The clamping stroke of the clamping rails 1a is generated by eccentric rollers 4.

The transport movements are absolutely synchronous on both sides of the block. To adapt to the format thickness is one of the two lateral clamping rails 1a, for example, the right side in the plan view seen in the transport direction adjusted, which is illustrated in the representations by the adjustment s.

In the simplest embodiment of the import blocks are added to the import position A by hand. The addition can take place with the forward stroke and the return stroke as soon as the previous block has left the position.

On the way from position A to position B, the block overflows a processing unit for creating a straight block spine, in the present embodiment, the milling device 34. For space saving reasons, the processing tools for milling, leveling and notches are formed roller-shaped.

In the position B, the block is taken over by the retaining clips 5 of a separate holding device before the clamping rails 1a vent and run back.

During the transport movement a flyleaf V is separated by a suction bar 6 and transported by a roller 7, which runs against a drum 8, and belt 9, wherein it is guided by a plate 10.

Temporarily matched the flyleaf with his back reaches the height of the block spine, when the clamping rails have opened 1a. Through the plate 11 the flyleaf is positioned on both sides of the block exactly at the level of the back and held by the auxiliary clamps 12, e.g. can be operated by pneumatic aids, not shown.

The alignment plate 11 is part of the glue station and constitutes the cover and the scraper of a gluing unit denoted in its entirety by 13. The gluing unit 13 with a glue roller 14 is moved along a guide 15 by a drive 16 under the block back (stroke h1) the glue roller 14 makes a synchronous rotational movement, so that your surface rolls against the block back and transmits the glue. The glue film thickness is adjusted by moving the plate 11 (scraper). Applying and settling of the glue film on the head and foot can be achieved by free movement of the glue roller at the appropriate points by means not shown narrow slidable along the glue roller length scraper.

The glue pot can be heated to process hot melt adhesives.

During the return stroke of Glue Plant 13 this is lowered slightly downwards, so that no contact with the now gefälzelten back arises. (Stroke h2) The scraper 11 is released when the glue roller rotates backward during the return stroke. This automatically removes glue soiling on the scraper.

If it is dispensed with the supply of a Fälzelstreifens, the glue roller 14 can apply on the return stroke another example thicker glue film. The size of the glue film is determined by the return scraper 11a, and the lowering h2 takes place so far that the correct distance of the roller from the back of the block is produced.

At the glue pot a suction plate 17 is pivotally mounted, which receives the cut to length Fälzelstreifen and presses at the end of Beleimungshubes h1 to the block back.

The Fälzelmaterial F is fed from the role by a roller 18 with counter rollers 19 of the cutter 20 with the knife 20a by means of unillustrated simple drive means, wherein the transport stroke corresponds to the length to be cut off. The suction plate 17 holds the Fälzelstreifen when the cut is made. The back-glued, provided with flyleaves and Fälzelstreifen block is clamped in position B again by the clamping rails 1a and transported to the position C. In this case, the belt 9 airs via a simple operation, not shown. This second region of the clamping rails is designed so that a larger notice of the block occurs, so that during the stroke from B to C the side gluing can be done. It is advantageously carried out by known nozzle applicators 21st

In position C, the block is picked up by a stapling station provided by the star-shaped cantilever 22 and clamped by the fixed staple side 22a and the movable staple side 22b.

The on the table 23 ready envelope is aligned by a guide 24 and stops, not shown, and is pressed by a pressure table 25 and Andrückschienen 26 to the block back. The pressure table 25 makes this a vertical movement h3 driven by a rack drive 27th

After the clamping rails 1a have left the area during the return stroke, the lateral pressing is effected by the pressing rails 26 with the stroke h4.

The Andrückschienen 26 and the Andrückisch 25 go back and the block is brought by pivoting the star boom 22 by a pitch α about the axis of rotation 22c in a slightly inclined to the horizontal position. To achieve the desired angle of inclination receives the star boom a fivefold division. The Clamp 22b opens and the block slips on the inclined surface of the bracket 22a on a delivery belt 28th

In another embodiment, not shown here, the block can also be pushed out of the clamp 22 onto the belt 28. In this case, the Stemausleger receives a quadruple division and the Auslagerichtung is then exactly horizontal.

The envelopes are placed in a feeder 29, isolated by suction 30, fed in a conventional manner grooved rollers 31 and further transported to the position C. where an orientation of the envelope takes place.

Claims (16)

1. System for producing glued bindings of blocks and brochures, in particular small publications, with a conveyor system for conveying the blocks or paper stacks to be bound through the system and provided with clamping rails for securing the blocks or brochures, a processing unit for creating a straight block spine, a glueing station for applying glue to the block or paper stack spine and a discharge system for discharging the finished, glued block or paper stack, and the conveyor system (1a, 1b, 1c) has a separate retaining mechanism for securing the block or paper stack being processed in the glueing station as the clamping rails are returned to the pick-up position for a new block or paper stack, characterised in that a feed unit for applying end pages (V) to the front and rear faces of the block or paper stack is disposed adjoining the processing unit (4) in the conveying direction of the block or paper stack for creating the straight block spine, and the feed unit orients the end pages (V) flush with the spine edge of the block or paper stack.
2. System for producing glued bindings of blocks and brochures as claimed in claim 1, characterised in that the retaining mechanism has at least two retaining clamps (5) retaining the block or paper stack flat faces in their upper region remote from the processed block spine.
3. System for producing glued bindings of blocks and brochures as claimed in claim 1 or 2, characterised in that the glueing station has a glueing unit (13) which can be moved transversely to the conveying direction with at least one glue roller (14), which glue roller (14) is driven by the transverse movement of the glueing unit (13) so that it rolls on the block spine, and the glue thickness overall can be determined by the setting of a scraper (11) extending across the entire length of the roller.
4. System for producing glued bindings of blocks and brochures as claimed in claim 3, characterised in that the glue roller (13) has two scrapers displaceable on its length which scrape off the roller surface at the points for the head and tail of the block.
5. System for producing glued bindings of blocks and brochures as claimed in one of claims 1 to 4, characterised in that the glueing station cooperates with a feed station for folding strips with a cutting unit (20) and a suction table (17), at which the folding strips are cut to length and then fed to the suction table (17), which is moved into position underneath the block spine after the glueing operation and applies the folding strip to the glued block spine by means of a stroke movement.
6. System for producing glued bindings of blocks and brochures as claimed in one of claims 1 to 5, characterised in that the discharge system has an arm system (22) with clamping stations (22a, 22b) disposed in a star-shaped layout which pick up the block from the longitudinal conveyor and set it down clamped after applying the cover or folding strip.
7. System for producing glued bindings of blocks and brochures as claimed in one of claims 1 to 6, characterised in that the clamping rails (1a) of the conveyor system (1a, 1b, 1c) have at least two regions of differing design disposed one after the other in the conveying direction, which regions permit a projection adapted to the different conditions of the processing stations.
8. System for producing glued bindings of blocks and brochures as claimed in one of claims 1 to 7, characterised in that the processing unit for creating a straight block spine is provided in the form of a milling station (34), and the milling operation is effected by means of roller-shaped tools.
9. Method of producing glued bindings of blocks and brochures, in particular for small publications, with a system as claimed in claim 1, whereby the blocks and brochures are fed through the system by means of a conveyor system provided with clamping rails for securing the blocks or brochures, and a straight block spine is created in a processing unit first of all, after which a glue is applied to the block or paper stack spine at a glueing station, and once the glueing operation is complete the finished glued blocks or paper stacks are discharged by a discharge mechanism, and conveying by the system takes place in at least two steps by means of a forward and backward movement in the conveying direction of the clamping rails (1a) laterally clamping the blocks to the left and right, and the blocks are picked up by a separate retaining mechanism (5) during the conveying return stroke of the clamping rails (1a) and thus pass through a stationary phase of the conveyor during which the operation of applying glue to the book spine takes place, and processing operations on the block take place when the conveyor is both moving and stationary, characterised in that end pages are applied to the front and rear face of the block after the straight block spine has been created and the rear edge of the end pages is oriented completely flush with the rear edge of the block.
10. Method of producing glued bindings of blocks and brochures as claimed in claim 9, characterised in that the glue is applied to the spine of the block transversely to the conveying direction by means of a glueing unit (13) with at least one glue roller (14) which can be displaced transversely to the conveying direction, and the glue roller (14) is driven by the transverse movement of the glueing unit (13) so that it rolls on the block spine, and the glue thickness overall is fixed by the setting of a scraper (11) extending across the entire length of the roller.
11. Method of producing glued bindings of blocks and brochures as claimed in claim 9 or 10, characterised in that, during the glueing operation, folding strips are cut to length and then fed to a suction table (17) which is moved into position underneath the block spine with the glueing movement and applies the folding strip to the glued block spine by means of a stroke movement.
12. Method of producing glued bindings of blocks and brochures as claimed in one of claims 9 to 11, characterised in that the blocks are discharged by means of the discharge system by means of an arm (22) with clamps (22a, 22b) disposed in a star-shaped layout which pick up the block from the longitudinal conveyor and set them down clamped after the cover or folding strip has been applied.
13. Method of producing glued bindings of blocks and brochures as claimed in one of claims 9 to 12, characterised in that a cover is fed to the blocks from the direction opposite that in which the blocks are conveyed.
14. Method of producing glued bindings of blocks and brochures as claimed in claim 10, characterised in that glue can be applied twice by a twofold transverse stroke movement of the glue roller (14), and the glue thickness may be varied from one stroke to the next by adjusting the scraper (11).
15. Method of producing glued bindings of blocks and brochures as claimed in claim 10, characterised in that two applications of glue may be made, for example one thinner and one thicker, by two rollers disposed one after the other in the direction of the transverse glueing stroke with different scraper settings.
16. Method of producing glued bindings of blocks and brochures as claimed in one of claims 9 to 15, characterised in that if the system is operated without feeding in folding strips, glue can be applied in a differing thickness twice during the glueing stroke and glueing return stroke and the thickness of the film of glue is determined by a forward scraper and a return scraper and the lowering movement of the glueing unit during the return stroke is adapted to the thickness of the glue applied.

Images