EP2377688A2 - Device for producing adhesively bound products - Google Patents

Abstract

The device i.e. adhesive binder (1), has a book block conveying device (10) comprising a conveying unit (11) and clamps (14) that are arranged on the unit at a fixed pitch spacing (T). A processing station e.g. book block guiding station (25), spine processing station (18) and cover feeder (20), is adjusted in a motor-driven manner. Cycle time defined with respect to conveyance of the clamps is divided into an adjusting segment to reset and/or adjust the station based on changing printed product characteristics and a processing segment to process book blocks and/or covers.

Description

The invention relates to a device for producing adhesive-bound printed products according to the preamble of claim 1.

With such a device, also known as an adhesive binder, adhesive bound booklets or book blocks are produced for solid bindings, wherein adhesive is applied to the previously processed back of the book block and an envelope and / or a Fälzelstreifen wrapped around the block spine and pressed. Depending on the equipment of the perfect binder different binding methods and product variants are possible.

The DE 20 2005 007 012 U1 shows such a bookbinding machine with a book block conveyor, consisting of an endless conveyor means running around deflection wheels and a plurality of mutually spaced at a same mutual pitch on the conveyor brackets for clamping sheet stacks. Along straight conveyor lines, various processing stations (such as book block insertion station, back processing station (s), glue application station (s), cover feeder, press station (s), and delivery station) are provided to perform the required operations in accordance with the intended binding method. With perfect binders of the medium and high power range, the staples are arranged at a pitch slightly larger than the staple length very close to each other on the conveyor. In the processing stations, a pitch related to the pitch is defined, in each of which a complete work cycle takes place simultaneously with the promotion of the staples advanced by the pitch.

Such perfect binders with a plurality of continuously circulating brackets serve the mass production of identical booklets or book blocks in high production capacity. The perfect binders are set up for a specific printed product and then produce the desired overlay in one go. During production, the print product quality-improving corrections may be made to the settings of the various processing stations.

After the last printed product of an edition has left the perfect binder, the changeover to the next printed product takes place. At standstill of the book block conveyor both on the formats (height, width, thickness) of the input and final products changed as well as in itself format independent variables in the processing stations of the perfect binder changed. Also in the feeders for the input products, the guides and conveyors have to be adjusted to the new dimensions of the book blocks and envelopes. Format-independent settings can be, for example, in a back processing station, the depth and spacing of the notches to be introduced in the book block back notches or in Beleimstationen the respective adhesive application thicknesses.

Although now in the generic perfect binders, the essential Umstellvorgänge by motor Verstellachssysteme are automated via a central control device and essentially done in parallel, yet with each product change a time-consuming setup process is connected, which stands in economic disproportion to the actual processing time especially for small runs.

The object of the present invention is therefore to provide an apparatus for the production of adhesive-bonded products according to the preamble of claim 1, which enables a continuous production of different in particular in their format dimensions printed products on such binders.

This object is achieved in that the working cycle of the processing stations is subdivided into an adjustment section for converting and / or setting the at least one processing station according to changing print product features and a processing section for processing the book blocks and / or envelopes.

The conversion of the processing stations to another printed product can be carried out during a continuous promotion of the book block within a working cycle of the respective processing station. The processing stations can be adjusted after each guided past the respective processing station book block, which can be responded to individual product fluctuations within a run and the continuous production of different printed products in lot size one is possible. This may result in book blocks of several different printed products in the book block conveyor.

The perfect binder does not need to be stopped to switch to another print product, so that the set-up time virtually eliminated. This sat down so far in the minimum of the times for emptying the perfect binder, stopping the book block conveyor, parallel adjustment of the processing stations, this period is determined by the processing station with the longest Umstellzeit, and the Approaching the book block conveyor. The productivity of the perfect binder, especially for smaller runs is significantly increased because the book block conveyor can be operated continuously at a high conveying speed. Energy efficiency is also improved, since the book block conveyor does not have to be braked and accelerated during product changes, and empty runs from clamps are reduced to a minimum. Generic perfect binder with the processing stations according to the invention can be used for the production of printed products both in high circulation and for the one-off production of, for example, digitally printed content and allow in both cases an economical production.

A corresponding adjustment in the working cycle of the processing stations can be provided in a simple manner by an increased pitch between the constantly promoted with constant conveying speed brackets, with a pitch, which is at least twice as long as the length of the brackets, the adjustment at least as long as the Processing section can be. The preferred pitch is equal to three times the theoretically minimum pitch of the staple length. As a result, an adjustment time is available even at high conveyor speeds of the clamps, which allows the changeover of the processing stations to a larger format change of the printed products, for example. By a change in the block thickness of several millimeters.

A corresponding adjustment section in the working cycle of the processing stations can also be created by the fact that the working cycle optionally extends over one, two or more clamps, the clamps associated with the working cycle not being occupied with book blocks upstream of the clamp occupied by the book block to be processed. Preferably, the Buchblockeinführstation has a clock device for releasing and feeding the book block to the respective bracket of the selected work cycle.

A flexible division of the power stroke results when, according to a further embodiment, the ratio of the adjustment to the processing section is variable. Depending on whether the respective processing must be carried out for a longer time or shorter time due to the format, material and / or provided features of the printed product, the possibly saved processing time can be added to the Versteltabschnitt and vice versa. In combination with the optionally extending over one, two or more brackets work cycle, the adjustment can be flexibly adapted to the respective adjustment task.

Preferably, the at least one processing station has at least one working means, which can be acted upon by a drive device with at least one individual drive with a movement profile variable within the working cycle. The respective processing operations on the book block or the envelope can be shortened or extended in relation to the working clock very easy.

From a predetermined conveying speed of the book block conveyor device, a maximum format change can be derived, which can be realized within a working cycle in the adjustment section, for example a max. Change in product thickness of +/- 6 mm. On the other hand, a maximum conveying speed of the book block conveyor can be derived from the adjustment time required for a specific format change, which is possible with a work cycle via a clamp or, if appropriate, via a plurality of clamps.

In particular, for the setting of processing stations, which are set for an optimal work result depending on the work result of a previous processing station, at least one measuring device is arranged upstream of the at least one processing device for measuring at least one feature.

By means of a control device connected to a drive system of the book block conveying device, the processing stations can successively be converted to another printed product with the continuous conveyance of the respective book block during continuous production. Preferably, the control device is associated with an identification device for the perfect binder supplied book block. Data required for the conversion of the processing stations can then be retrieved from a data memory connected to the control device or derived from the identification data. Analogous to the successive conversion, the book block insertion station is subdivided into a plurality of successive conveyor segments for feeding the book blocks to the clamps, the individual conveyor segments being adjustable separately from each other according to the block thickness of the respective book block arriving subsequently at the respective conveyor segment.

Fig. 1

einen Klebebinder in einer teilweise schematischen Draufsicht;

Fig. 2 a, b

Bewegungsdiagramme von einer Andrückstation des Klebebinders;

Fig. 3

die Andrückstation in einer teilweise schematischen Seitenansicht.

The features of the present invention will be explained in the following description of a preferred embodiment with reference to the accompanying drawings. Show it

Fig. 1

an adhesive binder in a partially schematic plan view;

Fig. 2 a, b

Movement diagrams from a pressure station of the adhesive binder;

Fig. 3

the Andrückstation in a partially schematic side view.

The in Fig. 1 shown perfect binder 1 consists essentially of a book block conveyor 10 with an endless, continuously running around a drive sprocket 12 and Umlenkkettenrad 13 in the oval conveyor chain 11 as a conveyor with a plurality of spaced from each other on the conveyor chain 11 arranged brackets 14 and arranged along rectilinear conveyor lines , motorized adjustable processing stations, such as a Buchblockeinführstation 25, back processing stations 18, glue application stations 19, a Umschlaganleger 20, Andrückstationen 21, 22 and a Ausführstation 30. The brackets 14 each have a fixed, inner jaw 15 and a relatively movable outer jaw 16 for clamping book block 3.1 ... 3.8 formed from a plurality of folded sheets and / or sheets, the block back protruding downwards out of the clamp 14.

With the perfect binder 1 adhesive bound booklets or book blocks for hard covers can be made with adhesive applied to the previously processed block back and an envelope 4.1 ... 4.4 and / or a Fälzelstreifen wrapped around the block back and pressed. Depending on the equipment of the perfect binder different binding methods and product variants are possible.

The perfect binder 1 is designed according to the invention to the effect that the conversion to another printed product during ongoing production with continuous promotion of book block 3.1 ... 3.8 can be done in the book block conveyor 10. For this purpose, the working cycle t _{0 of} the respective processing stations is subdivided into an adjustment section t _v1 , t _v2 for changing over and / or setting the processing station according to changing print product features and a processing section t _B1 , t _B2 for processing the book blocks and / or envelopes. The perfect binder 1 does not have to be stopped for the changeover. The changeover takes place successively, that is, the processing stations 25, 18, 19, 20, 21, 22, 30 are temporally successively arranged according to their arrangement along the book block conveyor 10 and its conveying speed. The conversion can also affect the book block conveyor 10 with the brackets 14, the opening and closing distance is set to block thickness, if necessary. For block thickness self-adjusting staples 14, a conversion is not required.

Prerequisite for a conversion is first a known per se identification of the book blocks 3.1 ... 3.8 in the range of a book block feeder 26 and a corresponding assignment of the envelopes 4.1 ... 4.4 to the book blocks 3.1 ... 3.8, ie the envelopes 4.1 ... 4.4 must be fed in an envelope feed 24 the perfect binder 1 in the same order as the book blocks 3.1 ... 3.8. Exemplary is in Fig. 1 a sensor 41 connected to a controller 40, one on the book block 3.1 ... 3.8 applied code detected. The required product data are either derived directly from the code or the code points to a record that is held in the controller 40 or is retrievable from a data store.

It is also possible to use one or more sensors which detect the respective product dimensions directly on the book block 3.1... 3.8, for example by means of a block thickness measurement. The detection can take place in the passage of the book blocks 3.1 ... 3.8 or the book blocks 3.1 ... 3.8 are performed in the order in which they are placed in the perfect binder 1 by hand in a corresponding measuring device.

The conversion of the processing stations 25, 18, 19, 20, 21, 22, 30 includes format- and format-independent variables, the various active actuators (motor-driven adjustment axes, pneumatically driven cylinders, etc.) or electronic adjustment of servo drives, the corresponding active elements in the Determine processing stations in their temporal and / or spatial position. Examples of such active elements are the guide elements 28.1 ... 28.3, 23.1, 23.2, 31.1, 31.2 in the conveying paths 28, 23, 31 of the feeding of the book blocks and envelopes.

The changeover within a working cycle t ₀ is explained using the example of Fig. 3 illustrated pressing station 22, in which the attached to the back of the book block 3 envelope 4 is pressed firmly again. For this purpose, an up and down, as well as in the direction of the staple movement 51 back and forth moving Andruckisch 61 on the Andrückisch 61 transversely slidably mounted, lateral Andrückschienen 66 are provided. The Andrückisch 61 is slidably guided on a arranged on Paraliellenkem 63.1, 63.2 support 62, wherein a handlebar 63.2 is controlled by a rotatably driven cam 64, for processing up and moving the Andrückisches 61. The fixed cyclical forward and backward movement 52 of Pressing table 61 is effected via a coupling 65 of a mechanical drive device not shown.

A changeover to be made to the pressing station 22 relates to the lateral pressing rails 66 to be set to the respective block thickness. These are guided via cam rollers 67 in control cams 68 so that the pressing rails 66 are closed and opened in accordance with the block thickness with the cyclical forward and backward movement 52 of the pressing table 61. The control cams 68 are positioned by an adjusting drive 69 with an associated adjusting motor 70 transversely to the clamping movement 51.

In the Fig. 2a and Fig. 2b Movement diagrams of a respective operating cycle t _{0 are given} for different adjustment operations. About the working stroke t ₀ moves one Staple 14 of length L by the distance equal to the pitch T. The staple movement 51 is shown as a straight line, which corresponds to a constant conveying speed. The forward / backward movement 52 of the Andrückisches 61 has a portion of the synchronous synchronization with the bracket. The lifting movement 53.1 or 53.2 of the pressure table 61 is variable by the changeable rotational speed 71 by a servomotor 72 drivable cam plate 64 such that the actual Andrückphase the Andrücktisches 61 can be shortened or extended against the book block back. From the respective lifting movement 53.1 or 53.2, the respective processing section t _B1 or t _{B2 is derived} . The complementary adjustment section t _V1 or t _V2 is extended or shortened accordingly.

In Fig. 2 A is shown an adjustment 54.1, in which the control rails 68 are adjusted from a larger block thickness by a relatively small adjustment v ₁ to a smaller block thickness in a correspondingly short adjustment time, so that the adjustment section t _{V1 is} limited to the minimum and the processing section t _B1 with the machining section s _{1 can use} the maximum synchronizing phase of the pressure table 61 with the clamp 14.

In Fig. 2 b is an adjustment shown 54.2, in which the control rails 68 are adjusted by a displacement v ₂ of almost the full displacement v of a small block thickness to a large block thickness. The adjustment time required for this is given by an enlarged adjustment section t _V2 , which was created by corresponding shortening of the processing section t _B1 and thus a shortened processing section s ₂ . The interaction of adjustment 54.1 or 54.2 and variable lifting 53.1, 53.2 via a higher-level control 40, which also coordinates the conversion of the other processing stations 25, 18, 19, 20, 21, 22, 30.

The controller 40 is connected via control lines 44 to the processing stations and knows their current settings. In addition, the required settings of the processing stations, which can be defined from the product data, for processing the respectively identified book blocks 3.1... 3.8 and associated envelopes 4.1... 4.4 are stored in the controller 40 or can be calculated, if necessary.

The controller 40 determines in advance of the transfer of the book blocks 3.1 ... 3.8 to the brackets 14, the respective changeover times in the processing stations 25, 18, 19, 20, 21, 22, 30. These are dependent on the setting strokes and in the control 40 stored adjustment speeds for the respective manipulated variables. For adjusting axes with threaded spindles, it is like Fig. 2 b can be seen still the adjustment direction. Because to eliminate the game of spindle and nut, the target position is always approached from a larger parking position out.

From the controller 40, the max. required Umstellzeit a processing station used and converted taking into account the conveying speed of the book block conveyor 10 and provided in the processing stations each adjusting section t _V1 , t _V2 in a rounded after the stapling conveyor distance with which the first book block of the subsequent printed product follows the last book block of the previous book block ,

A respective processing station is changed over when the conveyor gap given by the conveying distance passes by the relevant processing station. The transition begins as soon as the book block of the preceding printed product or the relevant clamp 14 leaves the respective processing station. The controller 40 is for this purpose connected to the drive system 42 of the book block conveyor 10 and has a product tracking for each of identified in the book block feeder 26 and funded in the book block conveyor 10 book block. The processing stations are quasi converted to the respective first book block of the subsequent printed product leading.

The Buchblockeinführstation 25 comprises a block feeder 27 as a clock device with which this first book block after the conveying distance in the block conveyor channel 28 can be issued, for feeding to a bracket 14 by a driver 28 a. The block investor 27 may be assigned a buffer for temporarily storing subsequent book blocks.

The block conveyor channel 28 is subdivided into successive conveyor segments by guide elements 28.1... 28.3 which can be separately adjusted to block thickness. As soon as a last book block of the preceding printed product leaves such a conveyor segment, the respective guide element 28.1... 28.3 is adjusted to the next block thickness. In Fig. 1 In the front, by the guide element 28.3 specific conveyor segment medium-thick book block 3.3 has been promoted. A subsequent, thinner book block 3.4 is located in the transition from the first to the second conveyor segment. The two guide elements 28.1 and 28.2 are therefore set to the same thickness. Similar to the book block insertion station 25, a conveyor channel 31 is also divided into successive conveyor segments by corresponding guide elements 31.1, 31.2, which can be adjusted separately on the booklet thickness, in the feed station 30.

As stated above, the sensor 41 may be a measuring device for measuring at least the block thickness of a book block subsequently transported through the book block insertion station 25 and the book block conveyor 10. With the book block thickness thus determined, most of the manipulated variables for the various processing stations including the book block conveyor 10 can be determined with sufficient accuracy.

For very precise operations, such as the grooves, applying and pressing the envelopes 4.1 ... 4.4, the setting of the respective processing stations 20, 21, 22 is made according to the block thickness of the clamped in the bracket 14 book block. In particular block thickness fluctuations in the same book block 3 can be recognized so. For this purpose, the block thickness is measured with a second sensor 43, which is arranged after a back-processing station 18, if any fold edges that are present in the back and distort the actual block thickness are cut off. It can still be arranged at other points of the book block conveyor 10 sensors for the detection of product features, after which then subsequent processing stations are adjustable.

When perfect binder 1, all the brackets 14 are arranged at an enlarged pitch T to each other on the conveyor chain 11, wherein the increased pitch T is about three times the respect. The staple length L theoretically minimum pitch T ', so in the book block conveyor 10, a corresponding conveying distance A to each bracket 14 is fixed.

The processing stations can be adjusted after each passing at the respective processing station book block and thus enable the continuous production of different printed products, especially with the respective edition one. The fixed conveyor distance A allows the conversion of the printed products within a limited format change between successive printed products, for example. A change in the format thickness of up to +/- 6 mm.

In the case of a format change which is larger with respect to the changeover time, one or more consecutive brackets 14 are not used to create a larger conveyor distance. The non-use of staples 14 for this reason can be reduced by feeding the printed products to the perfect binder 1 in such an order that successive printed products of different formats differ from each other at most by the limited format change.

Although the perfect binder 1 is optimized by the increased pitch T for the production of printed products of each edition one, even larger batches can be produced economically on the perfect binder 1. As a result of the increased pitch T, in the exemplary embodiment two thirds of the staples 14 usually provided in such an adhesive binder fall away. Not only the costs of the book block conveyor but also its moving total mass are considerably reduced.

Alternatively, in an adhesive binder only at a few points of the conveyor chain 11 could be provided at pitch T 'between the other brackets 14 enlarged pitch between the brackets 14, so that in the book block conveyor 10, a corresponding conveying distance is fixed at these locations. In a product change, the first book block of the subsequent printed product would be associated with the first staple 14 after the increased pitch. In a further alternative, with an adhesive binder having staples arranged at the pitch T ', the respectively required conveying distance could be created by not adding a corresponding number of staples 14 to the book block.

Claims (12)

Device (1) for the production of adhesive bound printed products, such as brochures (2), magazines or book blocks for hard covers, consisting of a book block conveyor (10) with an endless, continuously around deflection wheels (12, 13) running conveyor (11) and a plurality of at a fixed pitch (T) to each other on the conveyor arranged brackets (14) for clamping formed of several folded sheets and / or sheets book block (3, 3.1 ... 3.8), and at least one along rectilinear conveyor lines arranged, motor-adjustable processing station, such as book block insertion station (25), back processing station (s) (18), glue application station (s) (19), cover feeder (20), pressure station (s) (21, 22) and / or execution station (30), wherein in the at least one Processing station (25, 18, 19, 20, 21, 22, 30) a working stroke (t ₀ ) is defined with respect to the promotion of the brackets (14) by the pitch (T ), characterized in that the power stroke (t ₀ ) is subdivided into an adjustment section (t _V1 , t _V2 ) for switching and / or adjusting the at least one processing station (25, 18, 19, 20, 21, 22, 30) changing print product features and a processing section (t _B1 , t _B2 ) for editing the book blocks (3, 3.1 ... 3.8) and / or envelopes (4, 4.1 ... 4.4). Apparatus according to claim 1, characterized in that the pitch (T) of the clamps (14) is at least twice as long as the length (L) of the clamps. Apparatus according to claim 2, characterized in that the pitch (T) of the clamps (14) is three times the. With respect to the staple length (L) theoretically minimal pitch (T '). Device according to one of claims 1 to 3, characterized in that the power stroke (t ₀ ) optionally extends over one, two or more brackets (14), wherein the working clock (t ₀ ) associated parentheses upstream of the book block to be processed occupied bracket are not occupied by book blocks. Apparatus according to claim 4, characterized in that the Buchblockeinführstation (25) has a clock means (27) for releasing and supplying the book block (3, 3.1 ... 3.8) to the respective bracket (14) of the selected working cycle. Device according to one of claims 1 to 5, characterized in that the ratio of the adjustment (t _V1 , t _V2 ) to the processing section (t _B1 , t _B2 ) is variable. Apparatus according to claim 6, characterized in that the at least one processing station (25, 18, 19, 20, 21, 22, 30) at least one working means (61, 66), which via a drive device (62, 63.1, 63.2, 64 , 65, 72) with at least one individual drive (72) with a variable within the working cycle (t ₀ ) movement profile (53.1, 53.2) can be acted upon. Device according to one of claims 1 to 7, characterized in that at certain conveying speed of the book block conveyor (10), the conversion of at least one processing station (25, 18, 19, 20, 21, 22, 30) to another printed product within a certain format change is possible. Device according to one of claims 1 to 8, characterized by at least one upstream of the at least one processing device (25, 18, 19, 20, 21, 22, 30) arranged measuring means (41, 43) for measuring at least one feature of a subsequent to the at least a processing station transported book block (3, 3.1 ... 3.8). Device according to one of claims 1 to 9, characterized by a control device (40) connected to a drive system (12, 42) of the book block conveyor (10) for the successive changeover of the processing stations (25, 18, 19, 20, 21, 22 , 30) to another printed product in continuous production. Apparatus according to claim 10, characterized in that the control device (40) is associated with an identification device (41) for supplied book blocks. Apparatus according to claim 10 or 11, characterized in that the Buchblockeinführstation (25) is divided into a plurality of successive conveyor segments (28.1, 28.2, 28.3) for feeding the book block (3, 3.1 ... 3.8) to the brackets (14) and that the individual conveyor segments are adjustable separately from one another according to the block thickness of the respectively subsequent book block arriving at the respective conveyor segment.

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