DE102008000039A1 - Roll load's cycle time optimizing method for roll changer supplying paper web in printing machine, involves transferring new material roll from waiting position by transfer table and moving new material roll in roll changer - Google Patents

Abstract

The method involves determining a trigger for starting roll changer load, retracting a transfer table (2) in a roll changer (1) and gluing a new material roll at a residual roll. A residual tube is ejected into a residual tube box (4) or the residual roll is stored on a roller carriage. The transfer table is driven out from the roll changer. The tube box or the carriage is transferred from the table to a basic position. Another new material roll (6) is transferred from a waiting position by the table. The material roll is moved in the roll changer.

Description

The The invention relates to a method for optimizing a cycle time the roll feed of a roll changer according to the Preamble of claim 1.

reelstands find use on printing presses and serve for feeding the material webs used as printing material. In general, will be while using paper webs. The material web is on a Rolled up material roll and runs from this to in the subsequent rotary printing machine to be printed.

In order to in the exhaustion of a web of material not the entire Printing machine must be stopped, it is known, a "flying Roll change. "The" flying roll change " is preferred and is used today for both Newspaper printing as well as for commercial printing practiced. One, two and three-armed roll stands are used for this or roll changer offered. "Flying roll change" means that sticking a new roll at undiminished speed the running, stretched paper web is performed. For this important process, under tension, tensile load and shear stress occurs, are only fractions of seconds to disposal.

For The new role is usually replaced by a flying role change Core drive accelerates until the peripheral speed of the linear velocity the running material web corresponds exactly. Upon reaching a given residual roll diameter, the bond is initiated. A flexible foam rubber roller presses the material webs to each other, and the old material web is using a knife bar separated from the expired role. The adhesive preparation of new roll is done previously in a known manner using adhesive tape and predetermined breaking points.

The Feeding the rollers to the reel splitter can be done with all known feeding systems, both by hand and with Carriers, transfer cars, driverless transport systems, Crane systems or traversers take place. It is not human Presence required on reel changer.

to Increasing the production speed it is known to carry out an automatic roll star feed. In the automatic Roller star feed is initially by push-button actuation or retrieve a new role in a fully automated system. An induction vehicle or other means of transport will be taking off the intermediate role the appropriate role and puts them on one empty roller carriage. The roller carriage drives mostly on one Transfertisch on, with which the automatic Rollensternbeschickung he follows. The transfer table moves the roller carriage with the new one Roll between the roller support arms of a roll stand. The roll is still centered on the transfer table to the receiving zones of the roll star. The cones of the roll carrier can now automatically be extended and take over the new Role. Subsequently, the loading device moves or the transfer table back to its original position. The trolley is being shut down from the transfer table and is ready to to take on a new role again.

If a role has expired and the roller support arms in the transfer position then the residual sleeve container will become automatic moved into the reel changer. The cones of the roller carrying arms become now in the arms. At the same time the emptied cardboard sleeve fixed by scrapers. The sleeve falls now in the rest roll container. Subsequently, the Automatically move the container back to its original position. The transport of these containers to the waste disposal site takes place preferably by induction vehicle.

All described movements can in manual mode also by Operation of manual controls performed become.

To the automatic triggering of the change process it is necessary electronically monitor the web run by reducing paper usage constantly measured and then calculated the residual roll diameter becomes. If a predetermined residual roll diameter is reached, then takes place the signal for swinging the new role in their acceleration or Adhesive position, etc.

The Production speed of the available Printing machines is at the typical production speeds of about 60,000 pressure per hour on a very rolling machine high technical level, thus further increasing given lower priority to printing speed can be, as the efforts and measures for reduction the preparation times at the machine or the cycle times the conversion and feeding of the reel changers.

Despite the very high level of technology already achieved, there is clearly more potential for optimizing print media production with offset technology. In particular, a shortening of set-up and cycle times as well as a reduction of waste, that is to say, remain on the expired roll after the roll change the amount of material of interest.

From the DE 10 2005 048 465 A1 It is known to provide a protection device for catching fragments on a transfer table arranged on the loading side of the roll changer. In the embodiment described here, a transfer table with a safety net attached thereto is retracted into the roll changer on reaching a critical residual roll diameter, whereby the area in front of the roll stand is secured. Thus, despite the existing risk of a roll over, the role can be further processed in order to reduce the loss.

Though can by such measures accident hazards for the operators are reduced, however, introduces Roll bursting mostly to a production interruption, which the reduced material loss quantity is strongly relativised.

Of the The invention is therefore based on the object, a method for optimization to create a cycle time of the roll feed of a roll changer.

The Object is the features of the invention Claim 1 solved.

According to the invention the entrance for a residual sleeve container or a roller carriage in a reel splitter already then triggered when a particular trigger state occurs. As trigger state comes For example, a certain residual roll diameter, z. Eg ≥ 250 mm of the running material roll into consideration, or even the position the roller carrying arms, which at a certain interval with the residual roll diameter or the scheduled roll change time.

The Default for the trigger-triggering residual roll diameter can be anywhere between the maximum and the minimum value, if the roll of material is not to be completely unwound. Preferably, the default is a minimum value. At incomplete Processing of the residual roll can be further processed in the production process.

With The position of the roller support arms can trigger the adhesive position the roller support arms are selected, which are preferably is detected by a sensor or as a signal from the roll changer sent after the Rollenarmverdrehung in the adhesive position becomes.

Of the Sleeve container or the roller carriage moves on insertion of the trigger signal then from a basic position a transfer table arranged in front of the reel changer, is there positioned and then moves using the Transfertisches between the support arms of the reel changer into it. There it is positioned in an ejection position in front of the reel changer.

After this the new web was adhered in a known manner now the roller support arms on the sleeve container or Roller wagon rotated past and the remaining sleeve is in known Way ejected, or stored the remaining role on the roller carriage. Subsequently, the sleeve container or the roller carriage with the transfer table back into the Basic position of the transfer table procedure.

at the exit of the sleeve container or the roller carriage from the transfer table in the direction of its basic position is now preferred at the same time from the other side of the transfer table, the new roll of material by means of her trolley from her starting position in front of the transfer table proceed to the transfer table. To the simultaneous exit of the Restrolle and entry of the new roll of material from or to the For example, to enable a transfer table before the trigger enters the residual sleeve container be moved into a parking position and in the basic position be provided empty roller carriage.

Of the Transfer table is then again between the roller support arms of the reel changer retracted. Subsequently, the recording of the new roll of material takes place in the roller support arms of the reel changer in a known manner.

The particular advantages of the invention are that the cycle time of roll loading on a roll changer can be shortened by about 15 to 20%. This has the consequence that Transport systems for roller transport and driverless transport vehicles for further feeding tasks on other reelstands be available earlier at the pressure plant and thus an optimization of the role logistics can take place.

at a star-shaped arrangement with a buffer or intermediate storage and a residual roll container at the transfer table is a simultaneous entry and exit to the transfer table but not possible for all conceivable variants. Therefore, should either the basic position of the residual sleeve container or a buffer position in a straight line with the transfer table and be arranged the position of the new roll of material.

However, a saving in the cycle time of the reel feed is still achieved by the early entry of the transfer table into the reel changer, even if the transfer table is moved to a new position before the re-assembly must be pivoted.

One Embodiment of the invention is in the drawings and will be described in more detail below.

It demonstrate:

1 a roll changer in a plan view;

2 a reel changer in a side view.

1 shows a roll changer 01 with one on the loading side of the roll changer 01 arranged transfer table 02 , which has a rail system 03 with a residual sleeve container 04 or a new roll of material 06 can be loaded. The residual sleeve container 04 is in this representation in its basic position. The new roll of material 06 is in a waiting position.

The reel changer 01 includes area coverage in a known manner 07 to protect against flying parts in case of bursting of the shell.

2 shows the reel splitter 01 in a side view. In this illustration, the residual sleeve container 04 already on the transfer table 02 ascended. The in a first roll carrier 08 expiring residual role 09 has reached a predetermined residual roll diameter, whereby the trigger for driving the residual sleeve container 04 on the transfer table 02 was triggered. For this purpose, the residual roll diameter is detected or calculated by suitable sensors and possibly compared with predetermined values. The residual roll diameter triggering the trigger can be determined to a minimum value.

The sensor detects z. B. a diameter of a new roll of material 06 when Aufachsen and a computing unit continuously calculates the residual roll diameter based on an already expired amount of paper, the start event may be, for example, the achievement of a predetermined residual roll diameter.

Achieving the predetermined residual roll diameter can also be achieved by taking a certain position of the roll carrier 08 be signaled, whereby the trigger is also triggered.

The current residual roll diameter can z. B. when unwinding the roll of material 06 ; 12 calculated from a measured during Aufachsvorgang roll diameter and an expired amount of material.

The transfer table 04 will now with the residual sleeve container 04 in the reel changer 01 retracted.

Subsequently or due to the high process speed substantially simultaneously becomes an adhesive frame 11 pivoted into an adhesive position and there is an automatic gluing the running material web, for example, paper web to a new roll of material 12 , which is already in a second roll carrier 13 the roll changer 01 is attentive.

The roller carriers 08 ; 13 comprise two in the image plane successively arranged roller support arms and are in a known manner in a roll stand 14 arranged.

After completion of the gluing, the roll stand is swiveled 14 and stripping a residual sleeve from the roller carrier 08 , The residual sleeve falls into the residual sleeve container 04 , Subsequently, the residual sleeve container 04 back to the basic position of the transfer table 02 moved back ( 1 ).

Simultaneously with the exit of the rest sleeve container 04 from the transfer table 02 becomes the material roll to be fed 06 from the other side to the transfer table 02 ascended and there is a Rollenpeickung the now free role carrier 08 in a known manner.

The process of reel feeding a reel changer 01 in a flying role change can run fully automatic.

01

reelstands

02

transfer table

03

rail system

04

Rest sleeve container

05

06

Roll of material, new, waiting position

07

area protection

08

roller carrier

09

residual role

10

11

adhesive frame

12

Roll of material, New

13

roller carrier

14

roller stand

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• DE 102005048465 A1 [0012]

Claims (8)

Method for optimizing a cycle time of the roll feed of a roll changer ( 01 in the case of a flying reel change, comprising the following steps: determining a trigger for starting the reel changer charging, driving on a residual sleeve container, 04 ) or an empty roller carriage on one in front of the reel changer ( 01 ) arranged transfer table ( 02 ), as soon as the trigger triggers, - retraction of the transfer table ( 02 ) in the roll changer ( 01 ), - gluing a new roll of material ( 12 ) to a residual role ( 09 ), - ejection of the residual sleeve into the residual sleeve container ( 04 ) or storage of the remaining roll ( 09 ) on the roller carriage, - extension of the transfer table ( 02 ) from the reel changer ( 01 ), - transfer of the residual sleeve container ( 04 ) or the roller carriage from the transfer table ( 02 ) to a basic position, - takeover of a new material role ( 06 ) from a waiting position through the transfer table ( 02 ), - Aufachsen the new roll of material ( 06 ) in the reel changer ( 01 ). A method according to claim 1, characterized in that the transfer of the residual sleeve container ( 04 ) or the roller carriage at the same time as the new material roll ( 06 ) takes place from the waiting position. Method according to claim 1 or 2, characterized in that the trigger for starting the reel changer feed is triggered by a predetermined residual reel diameter and the actual remaining reel diameter during the course of the remaining reel ( 09 ) is recorded and evaluated. Method according to claim 1 or 2, characterized in that the trigger for starting the reel changer feed is triggered by the position of the reel support arms when the reel carrier ( 13 ) has been pivoted into an adhesive position. A method according to claim 1 or 2, characterized in that the trigger for starting the reel changer loading by the beginning of the acceleration of the new roll of material ( 12 ) is triggered. Method according to one of claims 1 to 5, characterized in that it runs fully automatically. A method according to claim 3, characterized in that the current residual roll diameter during unwinding of the roll of material ( 06 ; 12 ) is determined arithmetically from a roll diameter measured during the thinning process and an expired material quantity. Method according to claim 3, characterized that the current residual roll diameter detected by a sensor becomes.