DE10238010A1 - Folding unit for web-fed rotary printing presses with combined newspaper and selected commercial production - Google Patents

Abstract

The invention provides a folding unit (2) for web-fed rotary printing presses (1) with combined newspaper and selected commercial production, which requires little space and is easy to convert for changing productions. DOLLAR A The folding unit (2) consists of at least one newspaper (3) and at least one illustration folder (12), with webs in newspaper quality as well as selected commercial quality can be printed with printing units (5 to 7) of the web-fed rotary printing press (1) , and the respective printed web can be fed to both the newspaper folder (3) and the illustration folder (12) according to a required folding quality.

Description

The invention relates to a folding unit for web offset printing presses with combined newspaper and selected commercial production as required 1.

The web offset printing can be divide into the following main groups:

• - web offset printing for the Newspaper printing (coldset)
• - web offset printing for the Illustration printing (heatset)
• - web offset printing for the Semi-commercial production

The term semi-commercial production is also known as Selected Commercial Production known. In the following only the term Selected Commercial is used used.

While newspaper printing can be characterized by printing of coldset inks, the characteristic of illustration printing is that Processing of heatset colors.

The semi-commercial production or Selected commercial production is said to be between the production area close to newspaper and illustration printing. The relatively new one The term originated from the constantly expanding range of printed products and their diverse Quality standards. It there is also a connection between the constantly Expanding range of double-sided coated or pigmented Papers and selected commercial production. In pure newspaper printing (Coldset) become absorbent, fast-moving natural papers that process the printing ink only physically Let dry, no thermal drying support is needed.

But as soon as papers for processing come with some streak, or papers through satin have undergone compression is often already thermal support drying is necessary to prevent smearing or removal and the train at all to be able to process in the folder. The Selected Commercial production is characterized above all through the processing of heatset colors and corresponding papers on the one hand, and on the other hand a greater variety of possibilities to produce a wide variety of printed products as a result of possible Folding variants for processing in the heatset and / or in the coldset printed paper webs.

But selected commercial production also means a combination of coldset and heatset printing, with the possibility a merge the webs printed in the coldset or heatset for a printed product exists, but also only coldset or heatset productions can be planned.

On newspaper printing presses with the possibility additionally for newspaper production (preferably in coldset), in other production types Produce printed matter such as Selected Commercials (preferably in heatset, but also in coldset or in combined Coldset / heatset production) usually comes in for newspaper production typical folder for use.

The possibilities for manufacturing hanging from folded products to a great extent from execution from the folding unit used, d. H. that for typical newspaper folders the possibilities for production in different fold types and fold variants due to the technical characteristics of a newspaper folder are limited.

According to the state of the art Newspaper folding units mentioned above for the realization of both newspaper as well as selected commercial productions costly with facilities provided which in particular for the Selected Commercial productions improvements in the folding options and the folding quality should achieve. The disadvantage is that the above-mentioned facilities for Improve the folding quality in selected commercial production disadvantageous in pure newspaper productions impact and the conversion of the folder when changing production difficult.

In another version after the state of the art on the newspaper printing machines mentioned above with the possibility for the production of selected commercials at least two folding units used with the aim of one folder each for a corresponding production (a folder for Heatset, another for Coldset productions) to use. The disadvantage is that two folders are required in this case, one folder specifically for newspaper production and the other only for Selected Commercial production is used. This requires one of the number of folders Corresponding space requirements and higher expenditure on rail guidance systems and more space for the entire printing system.

The invention is based on the object Eliminate the above disadvantages and one for changing Production folding unit that is easy to convert and has a small installation space to create by means of which newspaper and selected commercial products are manufactured can be.

This task is due to the characteristics solved in the characterizing part of claim 1.

Advantageous embodiments of the Invention are the dependent claims can be seen in connection with the description.

It is advantageous that by means of the proposed folding unit, both pure newspaper folding products with typical characteristics, as well as selected commercials of variable product quality can be produced with newspaper printing machines.

Newspaper products are usually characterized by broadsheet or tabloid format, fixed signature width, high number of pages, Coldset, folding quality according to IFRA. IFRA is the abbreviation from “INCA-FIEJ Research Association ".

Selected commercial products are characterized by different fold types, variable signature widths, small to medium page numbers, in coldset or heatset or combined goldset / heatset production printed. The fold quality lies in the border area between newspaper (IFRA) and illustration (after FOGRA).

Broadsheet is the name of a newspaper page or for a newspaper format in web offset newspaper printing. Tabloid or Magazine is the name for a magazine page in web offset newspaper printing.

It is significant that means the proposed folding unit with the newspaper printing machines mentioned above especially for the production of selected commercials folding products in the Illustration usual Fold types can be realized. For example, fold products with 1st longitudinal fold, 1st transverse fold, 2nd transverse fold double parallel, 2nd Cross fold delta, 1st cross fold + 2nd longitudinal fold, 1st + 2nd cross fold delta + 2nd longitudinal fold as well as using a cutter folding products with only one 1. Longitudinal fold.

It is particularly noteworthy that the possibility by means of the folding unit consists of paper strands entering the folding unit which are highly variable in width to be processed by using a sliding former.

Thus, by means of the folding unit according to the invention the production possibilities the newspaper printing machine, especially for outside filling productions the typical newspaper production expanded.

Another advantage is that the Structure of the folding unit enables effective use of space and contributes to reducing the space costs of a printing press system.

Another advantage of the folding unit according to the invention is that the achievable fold quality for selected commercials is higher quality, in particular for example afterwards bookbinding further processing is sufficient.

Another advantage is that the Folding unit meets both the requirements of newspaper production, as well as optimally set up for special selected commercial productions. or is convertible.

The one proposed for newspaper presses Folding unit for Selected Commercial consists of at least one illustration folder in combination with at least one newspaper folder, the folding unit constructed in this way based on your configuration both for one pure newspaper production as well as for special selected commercial productions is suitable or provided. The folders become their constructive Characteristic according to the respective production - either Newspaper or selected commercial productions - used.

It is preferred for selected commercial productions with high print quality the folding quality to be correspondingly high and for this print job the illustration folder is used, but it is also the combination of newspaper print quality - print quality lower than at Selected Commercial - with high folding quality and vice versa possible.

Notes on the explanation of newspaper, selected Commercial and commercial / illustration quality are in the KBA report 12/1999, Page 89 of the printing press manufacturer König & Bauer AG.

Advantageously, the the folding unit according to the invention equipped newspaper printing machine in addition to newspaper production - conditionally through the achievable print and fold quality - also for the production of Print products can be used, which according to the state of the art were previously produced by illustration machines and the lower to medium quality range of Illustration.

For converting newspaper folders on selected commercial production required setup time can be significantly shortened because the effort for the Production change only on the commissioning of the for the production order reduce the required folding unit.

In a first variant become a newspaper printing system with the possibility of Selected Commercial Production assigned two folding units, one in a folding unit an illustration folder and a newspaper folder in the other folder is arranged. Each folding unit consists of a folding unit and the typical folding unit Folding structure (folding former, turning unit etc.), with the folding units are typically arranged side by side in the machine longitudinal axis.

• a) als Doppel-Falzwerk: Beide Falzwerke stehen hintereinander in einer Linie, die Falzauslage des hinteren Falzwerkes unterläuft das vordere Falzwerk, wobei in vorteilhafter Weise das hintere Falzwerk ein Zeitungsfalzwerk und das vordere Falzwerk wegen der standardmäßig vorhandenen Einrichtung für den 2. Längsfalz ein Illustrationsfalzwerk ist. Die Falzeinheit weist einen Falzaufbau für beide Falzwerke auf, wobei in vorteilhafter Weise der erste Falztrichter oberhalb des Doppel-Falzwerkes in illustrationstypischer Ausführung, beispielsweise ein verschiebbarer Falztrichter, verwendet wird und weitere in vertikaler Fortfolge benötigte Falztrichter zeitungstypisch, d.h. nicht verschiebbar, ausgeführt werden.
• b) als sog. Huckepack-Falzwerk: Die Falzwerke stehen übereinander, d.h. sie sind vertikal gestockt mit einem geringen Versatz der vertikalen Strangeinlauflinien zueinander um möglichst geringe Umlenkungen im Stranglauf nach dem 1. Längsfalz zum jeweiligen Falzwerk zu erreichen, wobei in vorteilhafter Weise das obere Falzwerk ein Illustrationsfalzwerk und das untere Falzwerk wegen seiner geringen Bauhöhe ein Zeitungsfalzwerk ist. Eine Möglichkeit für einen optionalen 2. Querfalz im Zeitungsfalzwerk existiert in diesem Fall nicht. Die Falzeinheit ist mit einem Falzaufbau für beide Falzwerke ausgestattet, wobei in vorteilhafter Weise der erste Falztrichter oberhalb des Huckepack-Falzwerkes in illustrationstypischer Ausführung, d.h. ein verschiebbarer Falztrichter, verwendet wird und weitere optionale Falztrichter in vertikaler bzw. horizontaler Fortfolge zeitungstypisch ausgeführt werden, das untere Falzwerk kann in dieser Variante optional mit einer Einrichtung für den 2. Längsfalz ausgerüstet werden.

In a further embodiment variant, the illustration folding unit and the newspaper folding unit are arranged in a common folding unit with the aim of reducing the space requirement for the entire machine, with both folding units only being assigned a common folding structure (folding former, turning unit, etc.):

• a) as a double folding unit: both folding units are in a row, the folding delivery of the rear folding unit underneath the front folding unit, whereby the rear folding unit is advantageously a newspaper folding unit and the front folding unit is an illustration folding unit because of the standard equipment for the second longitudinal fold is. The folding unit has a folding structure for both Folders, whereby the first former above the double folder in an illustration-typical design, for example a movable former, is used in an advantageous manner and further folders required in vertical succession are carried out in the manner of a newspaper, that is to say not displaceably.
• b) as a so-called piggyback folding unit: the folding units are one above the other, i.e. they are vertically stacked with a slight offset of the vertical strand infeed lines to one another in order to achieve as little deflection as possible in the strand run after the 1st longitudinal fold to the respective folding unit, the upper one being advantageous Folding unit is an illustration folding unit and the lower folding unit is a newspaper folding unit due to its low overall height. In this case, there is no possibility for an optional second cross fold in the newspaper folding unit. The folding unit is equipped with a folding structure for both folding units, whereby the first folding former above the piggyback folding unit in an illustration-typical design, i.e. a sliding folding former, is advantageously used, and further optional folding former are carried out in a vertical or horizontal sequence, typical of the newspaper, the lower one In this variant, the folding unit can optionally be equipped with a device for the 2nd longitudinal fold.

Features newspaper folder

According to the state of the art Newspaper folding unit is a point folding unit, designed for production of folded products in the 1st cross fold with page numbers in the range of predominantly 16 to 96 pages broadsheet or 32 to 192 pages tabloid and optionally in the 2nd longitudinal fold with page numbers in the range of approx. 16 to 64 pages of magazine.

The signature dimensions of the typical folded products are of little variability regarding the Marked width of the folded products.

The folding tolerances that can be achieved with newspaper folding machines suffice the requirements of the IFRA standards.

According to the state of the art, a newspaper folding unit achieves a minimum folding tolerance of ⁺ / _- 0.8 mm without folding aid (perforation etc.) or ⁺ / _- 0.5 mm with folding aid.

Newspaper folders are preferred suitable for processing paper webs printed in coldset.

For Selected commercial productions can also do newspaper folds Process printed paper webs in the heatset.

For Selected commercial productions can have newspaper folds optional also with a second cross fold (according to the state of the art only as a double parallel) equipped become.

All Assemblies of the newspaper folding plant are designed for processing high number of pages (up to 96 pages broadsheet).

The arrangement of product leading Elements - for example Punctures, ligaments, Sliding elements - along the The width of the folded products to be processed is largely asymmetrical, because of the fixed former, which is typical in newspaper printing. The funnel tip has a fixed distance regarding the folding unit walls, i.e. the position of the 1st longitudinal fold the folded product is always fixed and independent of the width of the processing paper web. The position of the opposite of the 1st longitudinal fold The open side of the folded product, however, depends on the width of the over Former folded paper web, the amount of change the position of the open side equal to half the amount of the change corresponds to the width of the paper web processed.

For Selected commercial productions can have newspaper folds optional can also be equipped with a sliding former.

Features illustration folder

According to the state of the art Illustration folder a point fold or a pointless Folding unit, designed for the production of folding products in the 1st cross fold with page numbers in the range from predominantly 8 to approx. 48 pages A2 (Broadsheet) or 16 to approx. 96 pages A3 (tabloid), as well as in the 2nd longitudinal fold with page numbers in the range of approx. 8 to 48 pages A4 (magazine) and optionally in the 2nd cross fold with page numbers in the range from 8 to approx. 48 pages A5 as double parallel or from 6 to approx. 24 pages as a delta, as well as with the possibility for processing products folded in the 2nd cross fold in the 2nd longitudinal fold.

The signature dimensions of the typical folded products are of great size variability regarding the Marked width of the folded products.

The folding tolerances that can be achieved with illustration folders suffice the requirements of FOGRA standards.

A state-of-the-art illustration folder achieves a maximum folding tolerance in the fold back of ⁺ / _- 0.5mm without folding aid (perforation etc.) or ⁺ / _- 0.3mm with folding aid.

Illustration folders are preferred Suitable for processing paper webs printed in the heatset.

There is an option also process paper webs printed in the gold set.

All Components of the illustration folder are designed for processing of folding products with high accuracy.

The arrangement of product-carrying elements - for example punctures, grippers, belts, sliding elements - along the width of the folded products to be processed is largely symmetrical, because of the movable former, which is typical in illustration printing. The funnel tip can be moved along the direction of the paper web and thus has a change The distance between the folding unit walls, i.e. the position of the 1st longitudinal fold and the open side opposite the 1st longitudinal fold on the folding product, is variable and depends on the width of the paper web to be processed, whereby the movable folding former is the means for optimal product guidance to enable the folding products through the folding unit with regard to the product guide elements arranged in the width of the folding unit.

The illustration folder can optionally be used e.g. For Single-purpose productions can also be equipped with a fixed former.

One-purpose production means that the format is fixed and with the press, in particular Web-fed rotary printing machine, processed only one web width becomes. This variant is common for long runs application, for example in the catalog or Phone book production.

Features newspaper printing in terms of fold

Processing from about 1 to 12-16 preferably in the coldset printed paper webs to newspapers.

Optionally, up to 3 can be printed in the heatset Paper webs for newspaper webs for the purpose of qualitative enhancement of the final product. Folding quality corresponds to that IFRA specifications, the folding products are usually not processed further.

Features illustration printing in terms of fold

Processing from 1 up to approx. 2-3 preferably printed webs of magazines, catalogs, Direct mails, brochures, advertising supplements (so-called advertising flyers) etc.

Paper webs printed in coldset can also be used as an option are processed. FALZ corresponds to the FOGRA specifications, the folding products are usually further processed.

Features Selected Commercial printing regarding fold

Processing from 1 to about 2 - 4 both in heatset as well as coldset printed paper webs for magazines, Brochures, advertising supplements (so-called advertising flyers), newspaper supplements etc.

Folding quality meets the IFRA requirements, whereby in individual cases the quality level according to the FOGRA standards, the folded products can be further processed will leave the folder as well as finished products.

The invention is intended to: an embodiment and are explained in more detail with reference to the figures. They show a highly schematic:

1 State-of-the-art web-fed rotary printing press with a folding unit for newspaper and selected commercial production,

2 State-of-the-art web-fed rotary printing press with two folding units for newspaper and selected commercial production,

3 Web-fed rotary printing machine with two folding units for newspaper and selected commercial production,

4 Web-fed rotary printing press with a folding unit for newspaper and selected commercial production,

5 Folding unit in an arrangement as a double folder and

6 Folding unit in an arrangement as a piggyback folder.

1 shows a web-fed rotary printing press 1 , in particular a newspaper printing press, according to the prior art with a folding unit 2 consisting of a newspaper folder 3 in combination with a fixed, ie non-displaceable, former 4 , for newspaper and selected commercial production. The web-fed rotary printing press 1 consists of printing units 5 to 7 , with the printing unit 5 Selected commercial products are printed and printed with the printing units 6 ; 7 Newspaper products are printed. For all printing units 5 to 7 are newspaper printing units. The Selected Commercial products, ie the webs printed in Selected Commercial quality, are transported over a web path 8th (Heatset train path) through a drying facility 9 to the folding unit 2 spent. The newspaper products, ie the webs printed in newspaper quality, are transported via a web path 10 (Goldset path) to the folding unit 2 spent.

Both the newspaper products and the selected commercial products are fed through the common former 4 pulled and in the newspaper folder 3 further processed.

2 shows a web-fed rotary printing press 1' according to the prior art with two folding units 2.1 '; 2.2 ' , each consisting of a newspaper folder 3.1 '; 3.2 ' in combination with a fixed, ie non-displaceable, former 4.1 ' . 4.2 ' , one folding unit each 2.2 ' for newspaper production as well as a folding unit 2.1 ' for selected commercial production. In contrast to 1 selected commercial products, ie the webs printed in selected commercial quality, are transported over the web path 8th' through the drying facility 9 ' to the folding unit 2.1 ' or 2.2 ' spent. The newspaper products, ie the webs printed in newspaper quality, are made via the web path 10 ' to the folding unit 2.2 ' spent. Thus, either the Selected Commercial products are in their own folding unit 2.1 ' , the newspaper products in their own folding unit 2.2 ' or the newspaper products together with the Selected Commercial products via the common folding unit 2.2 ' processed, ie via the common former 4.2 ' pulled and in the newspaper folder 3.2 ' further processed.

3 shows a web-fed rotary printing press 1'' with at least a two-part folding unit 2 '' , with a first part of the folding unit 2 '' consisting of a newspaper folder 3 '' in combination with a fixed, ie non-displaceable, former 4 '' for newspaper production and at least another part of the folding unit 2 '' consisting of an illustration folder 12 in combination with a moveable former 13 selected commercial production.

The Selected Commercial products, ie the webs printed in Selected Commercial quality, are placed on the web path 8th'' through the drying facility 9 '' to the folding unit 2 '' spent. The newspaper products, ie the webs printed in newspaper quality, are made via the web path 10 '' to the folding unit 2 '' spent. Thus, either the Selected Commercial products are in our own illustration folder 12 with sliding former 13 , the newspaper products in their own folding unit 2 '' or the newspaper products together with the Selected Commercial products via a common folding unit 2 '' processed, ie via the common fixed former 4 '' pulled and in the newspaper folder 3 ' further processed.

4 shows a web-fed rotary printing press 1''' with a folding unit 2 ''' consisting of a newspaper folder 3 ''' for newspaper production and an illustration folder 12 ' for selected commercial production in combination with a movable folding former 13 ' above the folding units 3 '''; 12 ' and an optional fixed, ie non-displaceable, former 4 ''' , designed for example as a balloon funnel, in vertical order.

The web-fed rotary printing press 1''' consists of the printing units 5 ''' to 7 ''' , with the printing unit 5 ''' Selected commercial products are printed and printed with the printing units 6 '''; 7 ''' Newspaper products are printed. For all printing units 5 ''' to 7 ''' are newspaper printing units. The Selected Commercial products, ie the webs printed in Selected Commercial quality, are placed on the web path 8th''' through the drying facility 9 ''' to the former 13 ' spent. The newspaper products, ie the webs printed in newspaper quality, are made via the web path 10 ''' also to the former 13 ' spent.

Both the newspaper products and the selected commercial products are fed through the common former 13 ' drawn and either in the newspaper folder 3 ''' and / or in the illustration folder 12 ' further processed.

When using the optional folding former 4 ''' are the newspaper products on an optional train path 14 to the former 4 ''' spent. The newspaper products are over the former 4 ''' pulled, then the newspaper folder 3 ''' fed and processed there. This means that either the Selected Commercial products and the Newspaper products each have their own form former 4 '''; 13 ' drawn and each in its own folder 3 '''; 12 ' processed, or the newspaper products and also the selected commercial products are via a common former 13 ' pulled and then each in its own folder assigned to the product or product properties 3 '''; 12 ' further processed.

In the 4 described folding unit 2 ''' is in the 5 and 6 explained in more detail.

5 shows a folding unit 2 '''' in an arrangement as a double folder, the front folder being an illustration folder 12 '' with standard equipment 15 for the 2nd longitudinal fold. The illustration folder 12 '' has a product display 12a for the 1st and / or 2nd cross fold, as well as a product delivery 12b for the 2nd longitudinal fold. The rear folder is a newspaper folder 3 '''' with one under the illustration folder 12 '' through the product display 3a ,

6 shows analogous to 5 a folding unit 2 ''''' in an arrangement as a piggyback folder, the upper folder being an illustration folder 12 ''' A newspaper folder with standard equipment for the 2nd longitudinal fold and the lower folder 3 ''''' with the option of optional equipment for the newspaper folder 3 ''''' with one facility 16 for the 2nd longitudinal fold and an associated product delivery 3b ,

1, 1 ', 1' ', 1' ''

Rotary press

2, 2 ', 2' ', 2' '', 2 '' '', 2 '' '' '

folding unit

2.1 '

folding unit

2.2 '

folding unit

3, 3 ', 3' ', 3' '', 3 '' '', 3 '' '' '

Zeitungsfalzwerk

3a

product display

3b

product display for the 2. Longitudinal fold

3.1 '

Zeitungsfalzwerk

3.2 '

Zeitungsfalzwerk

4, 4 ', 4' ', 4' '', 4 '' '', 4 '' '' '

formers

4.1 '

formers

4.2 '

formers

5, 5 ', 5' ', 5' ''

printing unit / Printing unit

6 6 ', 6' ', 6' ''

printing unit / Printing unit

7, 7 ', 7' ', 7' ''

printing unit / Printing unit

8th, 8 ', 8' ', 8' '', 8 '' '', 8 '' '' '

bahnweg

9 9 ', 9' ', 9' ''

drying device

10 10 ', 10' ', 10' '', 10 '' '', 10 '' '' '

bahnweg

11

-

12 12 ', 12' ', 12' ''

Illustrationsfalzwerk

12a

product display for 1st or 2nd cross fold

12b

product display for 2nd longitudinal fold

13 13 ', 13' ', 13' ''

formers

14

bahnweg

15 15 '

Facility for the 2. Longitudinal fold

16

Facility for the 2. Longitudinal fold

Claims (9)

Folding unit ( 2 ) a web-fed rotary printing press ( 1 ), in particular newspaper printing press, with printing units ( 5 to 7 ) of the web-fed rotary printing press ( 1 ) Tracks are both in paper quality and in Selected commmercial-quality printable, characterized in that the folding unit of at least one newspaper ( 3 ) and at least one illustration folder ( 12 ) exists and the respective printed web in accordance with a required folding quality both the newspaper folder ( 3 ) as well as the illustration folder ( 12 ) can be fed. Folding unit ( 2 ) according to claim 1, characterized in that printed webs in which a high folding quality is required, the illustration folder ( 12 ) and that printed webs that require a lower folding quality are sent to the newspaper folder ( 3 ) are fed. Folding unit ( 2 ) according to one of claims 1 or 2, characterized in that the newspaper folder ( 3 ) and the illustration folder ( 12 ) is arranged side by side in the direction of the machine longitudinal axis, with each folding unit ( 3 ; 12 ) a fold structure is assigned. Folding unit ( 2 ) according to claim 3, characterized in that both folding units ( 3 ; 12 ) either directly or by at least one machine component, in particular a printing unit, a web guiding unit, an unwinder, a drying device or a cooling unit, are arranged separately from one another in the machine longitudinal axis, the folding units ( 3 ; 12 ) are arranged either on one level or on two levels. Folding unit ( 2 ) according to one of claims 1 or 2, characterized in that both folding units ( 3 ; 12 ) are arranged one behind the other in the direction of the product delivery, whereby both folding units ( 3 ; 12 ) only one fold structure is assigned. Folding unit ( 2 ; 2 '''' ) according to claim 5, characterized in that the rear folder as a newspaper folder ( 3 ; 3 '''' ) is designed and the front folder as an illustration folder ( 12 ; 12 '' ) is designed. Folding unit ( 2 ) according to one of claims 1 or 2, characterized in that both folding units ( 3 ; 12 ) are arranged one above the other in two different levels. Folding unit ( 2 ; 2 ''''' ) according to claim 7, characterized in that the upper folder as an illustration folder ( 12 ; 12 ''' ) is designed and the lower folder as a newspaper folder ( 3 ; 3 ''''' ) is designed. Device according to one of claims 5 to 8, characterized in that the respective center axes of the folding units ( 3 ; 12 ) are in alignment with each other.