DE102010001469B3 - Chain drawing system for rotary web printing press that is utilized for printing newspaper, has cleaning element arranged between two idler rollers and for cleaning and/or lubricating bearing surfaces when drawing chain is drawn - Google Patents

Abstract

The system has a drawing chain (2) guided into a chain rail (1) and comprising idler rollers (3), where a cleaning element is arranged between the two idler rollers and lies with two opposite friction surfaces at bearing surfaces of the chain rail. The cleaning element cleans and/or lubricates the bearing surfaces when the drawing chain is drawn. The cleaning element is designed as a felt cuboid (8) that is soaked with oil or cleaning agent. The friction surfaces of the felt cuboid are aligned parallel to fiber direction of a felt, and the cleaning element is made of absorbent material. An independent claim is also included for a method for cleaning and/or lubricating a chain rail of a chain drawing system of a rotary web printing press.

Description

The invention relates to a Ketteneinziehsystem a web-fed rotary printing press and a method for cleaning and / or lubrication of a chain rail of a Ketteneinziehsystems according to the preamble of claim 1 and 6 respectively.

A perfect paper web logistics, ie the guidance of the material web between the reel changer and the folder delivery is a decisive prerequisite for the print quality and economic efficiency in web offset printing. Modern web offset presses allow a variety of different color assignments, which are achieved especially in newspaper printing by reversing the individual necessary printing units and appropriate guidance by the printing unit.

Paper retractors have the task of enabling automatic retraction of the paper web from the roll support by the printing unit to the hopper infeed rollers to rapidly change production, to relieve the operator of this time-consuming work and also to contribute through faster conversion to a reduction of waste.

Very common is the Ketteneinziehsystem. It enables the simultaneous feeding in of several webs and the chain rewinding takes place automatically by the shortest route. In detail, the system consists of chain tracks with profiled rails, which pass through the paper paths from the roller bearing through the printing unit to the hopper inlet rollers. This pendulum rollers, biasing, paper web release means, guide and register rollers and draw rollers of the turning devices are bypassed. The installation of switches allows a variable assignment of the roller bearings to the printing units and the various passes of the printing units, according to the preselected or desired guidance of the paper web. The feed can be made at an adjustable speed of 5 to 40 m / min and the chain return up to 50 m / min. The setting is made from the control desk. At the chain tracks three-phase motors controlled by frequency converters are arranged at a distance of about 4 m, at the shaft end a sprocket sits. The sprocket is in engagement with a piece of chain that is about 6.5 m long and thus taken when passing through the chain tracks each of the subsequent sprocket and transported to the next station on.

A prefabricated paper tip or a reusable pull-in tip is glued to the paper web to be fed or the paper web is cut or torn at an angle and fastened to the suspension device. The machine can then be switched from the control station to the desired retraction speed. The glued paper tip no longer needs to be sorted out, but can also run into the white waste. Any existing speed differences to the rotary machine are automatically compensated to avoid web breaks.

After retraction of the paper web, the return transport of the chain piece to the starting position from the roller bearing takes place on the shortest path. The piece of chain must go back the same way.

Since the chain guide rail passes through the entire printing unit and folder, soiling can be deposited during the printing operation in the chain guide rails and also in the chain pieces. These can hinder a subsequent setup operation or pollute the newly drawn-in material web.

From the DE 10 2007 002 875 A1 a retraction device for drawing a printing substrate into a printing press is known in which at least one end of a conveyor chain is associated with a cleaning device which is detachably connected to the Einziehkette. The cleaning device is connected by a fastening bolt with one end of the conveyor chain articulated and releasably connected. The cleaning device has a cuboid base body, on the opposite side walls cleaning body are arranged. The cleaning body may be formed, for example, as bristle bundles of a plurality of bristles. Other cleaning bodies may also be used, such as flexible scrapers or stiff scratches.

The invention has for its object to provide a Ketteneinziehvorrichtung, which allows a particularly simple and inexpensive way to clean the chain rail separately or during the Einziehvorganges and preferably at the same time allows optimal lubrication of the rollers of a Einziehkette.

The object is achieved by the features of claim 1 and 6, respectively.

The advantage of the invention is, in particular, that a particularly inexpensive and simple cleaning system for a Ketteneinziehsystem is created. The cleaning elements can be used if necessary and easily replaceable, so that it requires no special technical effort to clean a Ketteneinziehsystem and / or to lubricate.

A Ketteneinziehsystem has first in a known manner to a chain rail, which is laid along the entire web run in the printing press, in particular web-fed rotary printing press. A finite Einziehkette, which is preferably formed by rollers which are interconnected by means of webs on the axes of rotation, is guided in the chain rail. The rollers roll off the running surfaces of the chain rail.

In this case, at least one cleaning element is provided between two rollers of the Einziehkette, which rests with two opposing friction surfaces on the running surfaces of the chain rail and this cleans when retracting the Einziehkette and lubricates. Any number of cleaning elements can be arranged in the chain rail between two rollers.

Also, a simple disposal of the felt wedge is possible.

The cleaning element is preferably made of a flexible absorbent material in order to easily implement the introduction into the Einziehkette and to achieve a good uptake of the contaminants. In a preferred embodiment of the invention, the cleaning element is a felt cuboid, which is preferably impregnated with oil or a cleaning agent. The friction surfaces of the felt cuboid are advantageously aligned parallel to the fiber path of the felt.

In a further preferred embodiment, the friction surfaces of the felt cuboid are provided with a running in the direction and perpendicular to the friction surface section. This leads to a spreading of the felt squares, whereby the cleaning and / or lubricating action is enhanced and falling out of the felt squares is prevented from the Einziehkette.

• – Positionieren eines Reinigungselementes zwischen zwei Laufrollen einer Einziehkette;
• – Beförderung der Einziehkette durch die gesamte Kettenschiene oder durch Abschnitte davon, wobei zwei gegenüberliegenden Reibflächen des Reinigungselementes an den Laufflächen der Kettenschiene unter Reibkontakt anliegen;
• – Entfernen des Reinigungselements aus der Einziehkette.

A method for cleaning and / or lubricating a chain rail of a chain pull-in system comprises the following steps:

• - Positioning a cleaning element between two rollers of a Einziehkette;
• - Carriage of the Einziehkette through the entire chain rail or through portions thereof, wherein two opposite friction surfaces of the cleaning element abut the running surfaces of the chain rail under frictional contact;
• - Remove the cleaning element from the retraction chain.

The cleaning element can be soaked with oil or a detergent before or after positioning in the retraction chain.

The use of a felt squarer is proposed as a cleaning element for cleaning and / or lubrication of a Ketteneinziehsystems a web-fed rotary printing press.

An embodiment of the invention is illustrated in the drawings and will be described in more detail below.

Show it:

1 a Ketteneinziehsystem with cleaning elements in three different views a), b) and c);

2 a plan view a) and a side view b) of a felt cuboid.

1 shows a retractor in 1a ) in a side view, in 1b ) in plan view and in 1c ) in a cross-sectional view along the section line AA in 1a ).

In a chain rail 01 is a pull-in chain 02 stored. The pull-in chain 02 includes rollers in the illustrated preferred embodiment 03 , z. B. rollers 03 , which in each case on a bolt 04 are rotatably mounted. Bolts 04 are preferably by chain pieces 06 connected with each other.

The chain rail 01 has a side guide opening 07 on, through which not shown hanging devices for the material web protrude when the Einziehkette 02 pulls a web into the printing press.

At least one cleaning element 08 , in the illustrated embodiment, a felt cuboid 08 , is between two roles 03 in the pull-in chain 02 inserted. Due to the flexibility of the felt cube 08 is a simple insertion and replacement of the felt squares 08 possible. The felt cuboid 08 lies with two opposing friction surfaces 09 on the inner treads 11 the chain rail 01 at. There can be several felt cubes 08 between successive roles 03 the pull-in chain 02 be used.

Will now the Einziehkette 02 with or without hinged material web through the chain rail 01 pulled through, so are dirt on the treads 11 from the friction surfaces 09 of the felt squarer 08 added. Is the felt cuboid 08 impregnated with oil or impregnated with a cleaning agent, on the one hand, an improved separation of the dirt from the treads 11 and at the same time a lubrication of the treads 11 and roles 03 be achieved.

2 shows the felt cuboid 08 in 2a ) in a side view and in 2 B ) in plan view.

The friction surfaces 09 are parallel to the fiber path of the felt cuboid 08 aligned. On the friction surfaces 09 is centered in the direction of the pull-in chain 02 one to the friction surface 09 vertical section 12 intended. The cut 12 is preferably about 5 mm deep. Due to the resulting widening of the felt cube 08 this something protrudes over the guide opening 07 the chain rail 01 over so that the edges of the guide hole 07 can be cleaned better.

LIST OF REFERENCE NUMBERS

01

chain rail

02

webbing-

03

Roller, roller

04

bolt

05

06

piece of chain

07

guide opening

08

Cleaning element, felt cuboid

09

friction surface

10

11

tread

12

cut

Claims (7)

Chain retracting system of a web-fed rotary printing press with a chain rail ( 01 ) and one in the chain rail ( 01 ) guided pull-in chain ( 02 ) with rollers ( 03 ), which in running surfaces ( 11 ) of the chain rail ( 01 ), characterized in that at least one cleaning element ( 08 ) between two rollers ( 03 ) arranged with two opposing friction surfaces ( 09 ) on the treads ( 11 ) of the chain rail ( 01 ) and this when pulling the Einziehkette ( 02 ) the treads ( 11 ) and / or lubricate. Ketteneinziehsystem according to claim 1, characterized in that the cleaning element ( 08 ) a felt cuboid ( 08 ). Ketteneinziehsystem according to claim 2, characterized in that the felt cuboid ( 08 ) is saturated with oil or with a cleaning agent. Ketteneinziehsystem according to claim 2 or 3, characterized in that the friction surfaces ( 09 ) of the felt cuboid ( 08 ) are aligned parallel to the fiber path of the felt. Ketteneinziehsystem according to claim 5, characterized in that the felt cuboid ( 08 ) with a in the direction of the Einziehkette ( 02 ) and perpendicular to the friction surface ( 09 ) running section ( 12 ) is provided. Method for cleaning and / or lubricating a chain rail ( 01 ) of a Ketteneinziehsystems a web-fed rotary printing press, characterized in that a cleaning element ( 08 ) between two rollers ( 03 ) of a pull-in chain ( 02 ) and then the Einziehkette ( 02 ) through the chain rail ( 01 ) or is conveyed through sections thereof, two opposing friction surfaces ( 09 ) of the cleaning element ( 08 ) on running surfaces ( 11 ) of the chain rail ( 01 ) bear against frictional contact. Method according to claim 6, characterized in that the cleaning element ( 08 ) is soaked in oil or with a detergent.

Images