EP0631866B1 - Method and means for introducing a web in a printing machine - Google Patents

Method and means for introducing a web in a printing machine Download PDF

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Publication number
EP0631866B1
EP0631866B1 EP19940108265 EP94108265A EP0631866B1 EP 0631866 B1 EP0631866 B1 EP 0631866B1 EP 19940108265 EP19940108265 EP 19940108265 EP 94108265 A EP94108265 A EP 94108265A EP 0631866 B1 EP0631866 B1 EP 0631866B1
Authority
EP
European Patent Office
Prior art keywords
threading
printing
webs
print carrier
web
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19940108265
Other languages
German (de)
French (fr)
Other versions
EP0631866A1 (en
Inventor
Rainer Burger
Klaus Theilacker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Manroland Druckmaschinen AG
Original Assignee
Manroland Druckmaschinen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to DE19934318299 priority Critical patent/DE4318299A1/en
Priority to DE4318299 priority
Application filed by Manroland Druckmaschinen AG filed Critical Manroland Druckmaschinen AG
Publication of EP0631866A1 publication Critical patent/EP0631866A1/en
Application granted granted Critical
Publication of EP0631866B1 publication Critical patent/EP0631866B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F13/00Common details of rotary presses or machines
    • B41F13/02Conveying or guiding webs through presses or machines
    • B41F13/03Threading webs into printing machines

Description

The invention relates to a method for feeding several Printing material webs, preferably paper webs, and on a Retractor.

From GB 421 328 a printing press with several printing units is known, which are each equipped with a retractor. By means of the Feeding devices, each of which is a feeding belt driven by a motor have, it is possible to independently of the substrate up to draw in the vicinity of the printing cylinders.

A pull-in device is already known from DE 22 41 127 C3, with only one single substrate at a time different feed paths are drawn. With the help of this Feeding device can have a paper web to be printed on preset turnouts in the desired manner by the individual Printing units of a printing press are performed, the web to be drawn in on a finite, drivable feed element is to be attached.

In addition, there are printing machines that work simultaneously several printing material webs have to be printed. Doing so Material web pulled in one by one. During the The entire printing press runs. Although this Process for feeding the material web saves a lot of time compared to manual feed, a high proportion nevertheless falls from waste that arises, for example, when in a Printing machine with four printing unit towers standing side by side fourth web of material is drawn in after the others three material webs have been drawn in and are now being moved have to.

If you would try all the webs of material at the same time move in to save time and waste, so they would Material webs due to the different lengths of feed paths and of the different times that they have for their feed path need at different times at their target points arrive. The first entry element at the destination arrived, would stop the entire press. Now those traction elements, such as cylinders or traction rollers, would have to to be touched by this material web, to be disengaged, then the printing press would have to be restarted and the remaining webs of material continue to be drawn in until the the next shorter material web would have reached the destination and accordingly the tension elements belonging to this strand are disengaged.

Even if it were possible to belong to one strand Disengage tension elements individually, while the to continue to turn the tension elements belonging to the other strands, see above it wouldn’t be possible to move into a standing and necessary for a uniqueness coupling Coupling running strands again.

Accordingly, it is necessary to use the individual lanes move in one after the other. Accordingly, when pulling in second lane moves the first one when pulling in the third lane the first and second are moved. If the path length is one Printing material web between a reel changer and a cutting unit in a printing press, for example, is 35 meters and four Substrates are to be drawn in one after the other a net retractable waste of 350 meters. The one for moving in The time required is four times that for one Substrate required time.

It is the object of the present invention to provide a method create a fast feed of printing material in the Printing machine allowed, also waste is saved.

The object is achieved according to the invention, as in claim 1 specified.

According to the invention, the individual substrates are accordingly for the shortest of them at the same time through the Printing units fed; the feed of the printing material web begins with the feed element that has to travel the longest distance. The next shorter feed elements start one after the other, see above that all feed elements arrive at their destination at the same time. According to the example above, four printing material webs are made with equally long feed paths in the printing press in a quarter of the Time drawn, as in conventional retractors is required. With a track length of 35 meters only arises a waste of 140 meters, which accounts for 40% of the waste corresponds to conventional retractors.

Instead of the simultaneous arrival of the substrate web during the To achieve pulling in that this too started at different times, it is in one another embodiment of the invention also possible Printing material webs at the same time, however, with different ones To let speeds run. This will be the one Printing material web that has to travel the longest feed path with fed at the highest speed. It won't provided that the retraction speeds each during the entire pull-in process must be constant, rather it is possible that the substrate web a long way has to travel at first at high speed is drawn in until it reaches the area of the printing units, and then, for example, at the same speed as that other printing material web that cover a shorter feed path Has. In this way, all substrate webs arrive at the same time their target points. Such a method is in Claim 2 claimed.

In a third variant of the invention, the Path length differences of the feed paths compensated so that all Feed paths (within permissible tolerances) are of equal length. To are, for example, fixed rods or fixed, rotatable ones Rollers are available that additionally wrap around the printing material webs so that they all travel the same way and the same way Retraction speed can be drawn. Instead of fixed Deflection means can rollers movable axially to their axis of rotation are provided, which correspond to the respectively provided Feed paths of the printing material webs in different positions are relocatable to compensate for the path length differences. A Such a method is claimed in claim 3.

Advantageous further developments can be found in the subclaims.

It is also an object of the invention to provide a retractor to create a fast feed of material webs in a Web press allowed.

This task is, as in claims 6-9 specified, solved.

In the following, the invention is described in exemplary embodiments on the basis of the Drawing explained.

Show it:

Fig. 1
a printing press with several printing units arranged side by side and one above the other and
Fig. 2
a printing press in tower design with two printing unit towers.

A printing press 1 (FIG. 1) has juxtaposed ones Satellite printing units 2, 3 and rubber-rubber printing units arranged above them 4, 5 on. From reelstands 6, 7 and 8 have to go through ways 9, 10, 11 printing material webs by means of the printing press Pull-in elements are pulled. Paths 9 to 11 are available exemplary of a variety of possible routes. Paths 9 to For example, 11 are 31.1 meters, 44.7 meters, and 26.7 meters long.

To the printing material webs, preferably paper webs, from the Pulling in reel changers 6 to 8 is on each of paths 9 to 11 a finite feed element, preferably a roller chain or a spring steel band, available, the side of the feed paths 9 to 11 running in guides. To the side of the feed paths 9 to 11 Drive stations 12 available for the retractors.

The distances between the drive stations 12 are preferably such that that the feed elements are at least from a drive station 12 are driven. So if the feed element from the Drive area of a drive station 12 moved out, it will its other end already from a new drive station 12 seized.

The feed element consists of a metallic, preferably ferromagnetic material to a in the drive stations 12 Trigger change in magnetic flux so that the motors of the Drive stations 12 are turned on. Another possibility, switching on the motors of the drive stations 12 consists in that pneumatic switching elements in the form of pneumatic pickups known design at a fixed distance in front of and behind the Drive stations 12 (for both directions of movement Feed elements) are arranged, which when the Feeding elements by switching pressure a switching signal in the trigger each drive station 12 so that an air motor in the drive station 12 is started and the feed element pulls or pushes until the beginning of the next Drive station is detected.

The printing press has an electronic memory in which all possible ways are stored in the printing press. The memory belongs to an electrical computer, for example a microprocessor. The operator operates, for example a control panel into which she enters all the data or on which she the currently selected paths or the positions of the feed elements queries. The feeder works under program control. By operating an off switch jumps the program to his Beginning back; the program is initiated by an on switch, that at different times the movement of the Triggers feed elements. At this point is a main valve, pneumatically controlled by the switch to the different Set ways still closed. This will set the course made that the operator chooses a programmed route and once in each of the different ways, for example the one in Fig. 1 drawn routes 9 to 11, by creating a electrical voltage, an initial initiator 14 is damped. The initial initiators 14 are each at the exit of the Reel changer 6, 7, 8 to the traction units 15, 16, 17.

The roll changers 6, 7, 8 shown in FIGS. 1, 2 are Reel changer for the flying reel change, in which the new Substrates during the run with the outgoing Printing material webs are glued.

In printing machines, for example for illustration printing, the a reel changer with standstill adhesive and one behind the Roll changer arranged paper storage for the printing material web have, the pull-in by means of the pull-in device optionally start behind the train; accordingly there are Initial initiators 14 arranged. Each of the printing units 2 to 5 (Fig. 1) has paper tear safety devices, for example the Paper tear safety devices 18. The paper tear safety devices 18 are each Teeing devices and associated register rollers 24 for change assigned to the path length of the printing substrate web in the feed path are each in front of the paper tear arrestors 18. The Paper tear safety devices 18 are only electromagnetically damped, when paper is guided past them, which registers optically becomes. Before the respective paper tear protection by the Is damped, the associated is located Register roller 24 in a position in which the printing material web traveled the longest possible route. Only after that Feed element has passed the paper tear safety device the register roller 24 moves in the direction of its desired position, wherein the path of the printing material web is gradually shortened. To this Way is avoided that the substrate web during A sudden jerk reduces tearing of their path. The Register roller 24 is required to cover this distance for example, as much time as for the entire pulling-in process Available.

After the initial initiators 14 by the respective Feed elements are damped, the feed elements drive around Oscillating rollers 27, which belong to the roll changers 6, 7, 8, around and on one, the vibrating rollers 27 in the feed direction downstream initiator 19 passing the end of the feed element or registered the beginning of the substrate web. The initiator 19 switches on the roller brake, which now has the respective position the vibrating roller is controlled. Compared to the printing process only a reduced braking force on the substrate during the Moving in exercised. The printing material web is now from the respective feed elements from the reel changers 6 to 8 through the printing units 2 to 5 to the respective folding units 20, 21 and 22 transported, according to the specified Route program a time delay between the start of the movement of the respective feed element for the different feed paths 9 to 11 opposite the longest feed path, here feed path 10 is observed. The feed elements and with them those of them drawn webs have a during the feed Speed from 25 to 30 m per minute.

If the folding units 20, 21, 22 have cutting rollers 26 at their inputs have, the feed elements on the cutting rollers 26th stopped or up to the former of the respective folder 20, 21, 22 moved in. The cutting knives are from Cutting rollers 26 turned off. If there are no cutting rollers are in any case up to the Folders pulled. The pull-in process ends as soon as the Retraction elements have reached end initiators 23 in one such a distance between the cutting rollers 26 and the respective Folders are arranged that the beginning of the substrate web are already in front of the cutting roller 26 or in front of the former remains. If the end initiators 23 are damped, it will Main valve closed and the drive stations 12 turned off. As soon as the beginning of the printing material web over the respective Cutting roller 26 has run, the cutting knife to the Cutting roller 26 turned to the printing material web in two Cut halves, one of which is made by hand over turning bars is guided to the respective folder 20, 21 or 22.

If in the event of the feeding of several printing material webs End initiators 23 not all at the same time, but at a distance are damped a few seconds in succession, it is sufficient that To initiate the end of the pull-in process when the first is dampened by them. After the end initiators 23 are damped, become the main valve for the air supply and the drive stations 12 switched off. The braking force for the reel changer 6 to 8 is for the Printing operation increased to normal.

After the end of the pull-in process, the pull-in elements that are out a chain or rope running in the rails of the feed path and a pull-in tip for pulling the printing material web, separated, i.e. the pull-in tip becomes the feed path removed so that the chain is always on the same feed path to the Roll changers 6, 7, 8 can move back.

For the return of the chains or ropes to the initial initiators! 4 the main valve is turned on again and the motors of the Drive stations 12 now move in the opposite direction.

When returning, the chain of the single feed elements up to the corresponding initial initiator 14 withdrawn. Once this is damped, the main valve closed and the motors of the drive stations 12 turned off. This completes the pull-in process, all buttons on the control panel are issued, and the printing press is free for the printing functions.

If several paper webs are fed in completely, the chains start when returning to the end initiators 23 at the same time, they arrive however at different times at the initial initiators 14 according to the path length of the different paths 9, 10, 11. Das leads to only the initial initiators 14 of each affected paper webs are damped. In the illustrated Thus, the initial initiator 14 in the example is first Reel changer 8, then the one in the reel changer 6 and finally the initial initiator 14 of the reel changer 7 is damped.

Correspondingly, only those become routes 11, 9 and 10 belonging drive stations 12 switched off. Only when that too Initial initiator 14 of the role changer 7 is damped, the remaining drive stations 12 switched off and the main valve closed. As with the single web feed, all buttons are now on Control desk issued, and the printing press is for everyone Print functions free.

According to the present invention, a drawing device for Pulling in several printing material webs, preferably paper webs, created the beginning of a with the indentation elements of finite length Take the paper web and remove it from the reel changers 6 to 8 and the trains 15 to 17 through the printing units 2 to 5 through to Pull folders 20 to 22. Compared to conventional ones Retraction devices are saved waste that a electronic memory is available in which the lengths of all possible feed paths 9 to 11 are stored in the printing press are and the feed elements according to the path difference of the Feed paths 9 to 11 and the resulting from given Retraction speed resulting time difference over a with the Memory connected electronic computers at different times can be switched on and switched off at the same time. It is also possible, while largely saving on waste of the printing process to re-feed the torn web. Instead of the feed elements must be started at different times it is also possible to start them at the same time, using them different retraction speed so that they Arrive at the same time (within the permissible time tolerances). Another alternative is the path length differences due to additional rollers to be wrapped around by the printing material webs balance.

Claims (9)

  1. Process for threading several print carrier webs, preferably paper webs, into a web-fed printing machine (1) along different threading paths (9 to 11) respectively from reel changers (6 to 8) and feed units (15 to 17) into printing units (2 to 5) of the web-fed printing machine (1) before the printing process with threading elements which start chronologically staggered with respect to each other according to the path difference of the threading paths (9 to 11) and the time differences resulting from this at predetermined threading speeds, wherein the process starts with the print carrier web on the longest threading path, and the print carrier web on the shortest threading path follows last, and all the print carrier webs arrive at the same time at the outlets of the printing units (2 to 5) and are halted.
  2. Process for threading several printed material webs, preferably paper webs, into a web-fed printing machine (1) along different threading paths (9 to 11) respectively from reel changers (6 to 8) and feed units (15 to 17) into printing units (2 to 5) of the web-fed printing machine (1) before the printing process with threading elements which introduce the print carrier webs at least at times at different speeds so that all the print carrier webs arrive at the same time at the outlets of the printing units (2 to 5) and are halted.
  3. Process for threading several print carrier webs, preferably paper webs, into a web-fed printing machine (1) along different threading paths (9 to 11) respectively from reel changers (6 to 8) and feed units (15 to 17) into printing units (2 to 5) of the web-fed printing machine (1) before the printing process with threading elements, wherein for compensation of the path length differences the print carrier webs are introduced at least partially via detours so that all the print carrier webs arrive at the same time at the outlets of the printing units (2 to 5) and are halted.
  4. Process for threading several print carrier webs according to claim 1, characterised in that start initiators (14) are electromagnetically actuated by the threading elements; deflectors are then set pneumatically according to the path programme; main valves in the printing lines belonging to the various threading paths (9 to 11) are opened one after the other with the time delay corresponding to the path difference; and drive stations (12) for advancing the threading elements pneumatically and the associated printing units (2 to 5) are switched on.
  5. Process for threading several print carrier webs according to one of claims 1 to 4, characterised in that the threading elements respectively travel round oscillation rollers (27) in the reel changers (6 to 8), whilst the oscillation rollers (27) are still stationary, and in that by means of initiators (19) which are arranged downstream of the oscillation rollers (27) in the in-feed direction the beginning of the respective print carrier web is recognised after it passes the threading elements, and in that the oscillation rollers (27) then control the brake force of the reel changers (6 to 8) via a signal generated by the initiators (19), so that the rollers exert a reduced brake force on the print carrier webs during the threading process.
  6. Threading device for drawing several printed material webs, preferably paper webs, along different threading paths (9 to 11) which are formed by guideways and deflectors lying outside the roller area, respectively from reel changers (6 to 8) and feed units (15 to 17) into printing units (2 to 5) of a printing machine (1) before the printing process with threading elements of finite length, the threading paths (9 to 11) being adjustable by adjustment means so that the threading elements can draw the print carrier webs on the respective threading paths (9 to 11), wherein a number of fixedly mounted rollers and/or rollers axially movable between the threading paths (9 to 11) of the print carrier web, corresponding at most to the number of threading paths, are arranged in the printing units (2 to 5) or in the region before the printing units (2 to 5) to compensate for the path length differences which the print carrier webs wind round during threading.
  7. Threading device for carrying out a process according to one of claims 1 to 3, characterised in that the adjustment means contain an electronic computer and an electronic memory and in that in the reel changers (6 to 8), which are designed as reel changers (6 to 8) for flying reel exchange, there is a start initiator (14) for recognising the starting point of the respective threading element, wherein the switch-over valves are joined via signal lines to the electronic computer, and are adjustable by it via signal lines in accordance with a path programme taken from the electronic memory, and wherein at the start time the threading elements are located at the respective start initiators (14) and these are electromagnetically actuated by the threading elements.
  8. Threading device for carrying out a process according to one of claims 1 to 3, characterised in that the adjustment means contain an electronic computer and an electronic memory, in that the reel changers are constructed as reel changers for stationary adhesion, in particular in a printing machine for illustration printing, with respectively subsequently inserted paper storage means for the respective print carrier webs, respective feed units and, behind the feed units in the direction of introduction, respectively have a start initiator (14) for recognising the starting point of the respective threading element, wherein the switch valves are joined by means of signal lines to the electronic computer and are adjustable by this in accordance with a path programme taken from the electronic memory, and wherein at the start time threading elements are located at the respective start initiators (14), the latter being electromagnetically actuated by the threading elements.
  9. Threading device for carrying out a process according to one of claims 1 to 5, characterised in that in each threading path (9 to 11) it has at least one paper tear safety device (18) with a cut-off device and an associated register roller (24) lying in the threading path in front of the paper tear safety device, wherein, before the threading element advances towards the register roller, this roller is brought into a position in which the print carrier web covers the longest possible path so that it does not hang down loosely or fall back.
EP19940108265 1993-06-02 1994-05-28 Method and means for introducing a web in a printing machine Expired - Lifetime EP0631866B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19934318299 DE4318299A1 (en) 1993-06-02 1993-06-02 Feeding device and method for feeding material webs into a printing press
DE4318299 1993-06-02

Publications (2)

Publication Number Publication Date
EP0631866A1 EP0631866A1 (en) 1995-01-04
EP0631866B1 true EP0631866B1 (en) 1998-01-21

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EP19940108265 Expired - Lifetime EP0631866B1 (en) 1993-06-02 1994-05-28 Method and means for introducing a web in a printing machine

Country Status (5)

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US (1) US5542350A (en)
EP (1) EP0631866B1 (en)
JP (1) JP2815310B2 (en)
CA (1) CA2124868C (en)
DE (1) DE4318299A1 (en)

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DE19721212C2 (en) * 1997-05-21 1999-04-01 Koenig & Bauer Ag Web rotary printing machine
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US6782087B1 (en) 1997-09-19 2004-08-24 Mci Communications Corporation Desktop telephony application program for a call center agent
US6490350B2 (en) 1997-09-30 2002-12-03 Mci Communications Corporation Monitoring system for telephony resources in a call center
US6466663B1 (en) 1997-09-30 2002-10-15 Don Ravenscroft Monitoring system client for a call center
JP3762071B2 (en) * 1997-11-04 2006-03-29 三菱重工業株式会社 Web feed travel control method and apparatus at the start of printing
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DE10015857A1 (en) * 2000-03-30 2001-10-11 Heidelberger Druckmasch Ag Device for drawing a material web into a rotary printing machine has hanging stations for web associated with components of machine along path of threading material web through machine
EP1138482B1 (en) 2000-03-30 2003-11-12 Heidelberger Druckmaschinen Aktiengesellschaft Web infeed device with decentralised link-up stations
DE10115919B4 (en) * 2001-03-30 2005-02-24 Koenig & Bauer Ag switch
DE10128821B4 (en) * 2001-06-15 2005-07-07 Koenig & Bauer Ag Method and device for merging webs of material
JP2004258306A (en) * 2003-02-26 2004-09-16 Fuji Photo Film Co Ltd Film feeder and image scanner equipped with the same
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DE102008001190B4 (en) 2008-04-15 2011-04-28 Koenig & Bauer Aktiengesellschaft Control unit for a belt or chain retraction device in a rotary printing machine and a method for monitoring and controlling an automatic retraction process of multiple webs
DE102013208751A1 (en) 2013-05-13 2014-11-13 Koenig & Bauer Aktiengesellschaft press
DE102013208754B4 (en) 2013-05-13 2018-09-13 Koenig & Bauer Ag Printing machine and a method for drawing a substrate web into a printing unit of a printing press
DE102014208896A1 (en) 2014-05-12 2015-11-12 Koenig & Bauer Ag Printing machine with a supply system for coating agents
DE102014208893A1 (en) 2014-05-12 2015-11-12 Koenig & Bauer Ag press

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Also Published As

Publication number Publication date
CA2124868C (en) 1997-11-25
US5542350A (en) 1996-08-06
DE4318299A1 (en) 1994-12-08
JPH079673A (en) 1995-01-13
CA2124868A1 (en) 1994-12-03
JP2815310B2 (en) 1998-10-27
EP0631866A1 (en) 1995-01-04

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