DE1922962A1 - Folding unit for thick folded products - Google Patents

Description

Rapid press factory -

KOENIG & BAUER AG Wuerzburg, April 29, 1969

Würzburg 326 / Wm / sc

Patent application Folding unit, for thick folded products

The invention relates to folding units for rotary printing machines for the production of thick newspapers,

For this purpose, folders have been designed as 2: 1 ~ or 3: 2 wheel folders with a maximum page capacity of 112 to 128 pages. Bs is disadvantageous that the speed of rotation of the rotary printing presses must be reduced because it is difficult to cut such thick products and to fold. For 128 pages you need eight paper webs, which are folded over funnels to form a strand of a total of 32 papers form «The cutting knives wear out quickly when cutting these 32 pieces of paper, which together are around 3 mm thick. When collecting with 2t1 devices, the collecting layer of 32 papers must be changed a small cylinder, about half the size of the forme cylinder, which runs at high speed and thus exerts great centrifugal forces. This is why even a 112-page production causes great difficulties · Undermines with 312-machines the collecting layer of, for example, 32 papers the incoming Web old 32 papers and thus increases rhythm! Soh den 3/2 cylinders by 3 mm "There" are more than 10 56 im Radius «This is why strong, fluctuating traction ratios result in tearing open the punctures and flying away from the sides or

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cause other difficulties. In all apparatus for strong products, the inner papers do not run well into the folding cylinder group because they are too loose. They are from the Outer papers, which are stretched too tightly, are displaced. Because of this difficulty in folding, which turns out to be very disadvantageous prove, the printing presses have to speed and thus in their performance when producing thick newspapers to be limited »

The object of the invention is based on the object of creating a folding unit which makes it possible to overcome these disadvantages avoid folding thick products without having to limit the machine performance «

According to the invention, the disadvantages mentioned are avoided in that the necessary incoming paper strands are divided into two different interfaces, which are equipped in a manner known per se with devices for collecting and non-collecting, and that both cutting cylinder groups feed the separated sheets to a roll or transfer cylinder and this Bread rolls or transfer cylinders one or two cylinders with rotating folding gauges for the actual transverse folding process, optionally with the interposition of a transfer cylinder, are used in a known manner, two or more folding triots or turning bars above the cylinder group to bring the individual paper webs together " ?

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In a particularly advantageous manner, the collecting cylinder 5/2 size, i.e. it can hold five newspapers and two Deliver wheel folding cylinders that are attached to the collecting cylinder at a distance of 120. In this way that affects Do not collect the cutting process. For example, for a 60-page newspaper, you need ten paper webs, from which suitably five over two upper funnels and five run over two lower funnels. This can still be managed well for each funnel. The longitudinally folded webs of two each Funnels, i.e. only 20 papers twice, are each fed to a pair of cutting cylinders. The cut of 20 papers doesn't do any Trouble. Both pairs of cutting cylinders transfer the copies to the 5/2 collecting cylinder. This creates the Collect 16O pages and 80 pages twice for uncollected production.

In 'a further embodiment of the invention is in front of each wheel folding cylinder a transfer cylinder switched. Then there is always a gap of one copy length on the transfer cylinder. According to the invention the downstream wheel folding cylinder then runs at a reduced speed, e.g. half the speed, and takes the Copies with grippers to enable a speed jump of the copy in a slow one. Such an apparatus with The slower cross fold is suitable for the production of previously unknown thick products of 160 pages or more at top speed fold.

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In addition, it is also possible to use each of the two groups of cutting cylinders for collecting, e.g. B, the ratio 3j2 is selected for groove and knife cylinders. But it can also be 2: 1. The sheets are therefore pre-collected for each interface. Consequently, a downstream merging cylinder which does not collect and which in this case is an integral one is sufficient Ratio z. B. four sizes. Are on this cylinder one or two wheel folding cylinders connected. Both wheel folding cylinders can, for. B. run at full speed. According to the invention, only the first wheel folding cylinder runs at full speed Speed and takes the copies with punctures from 4/2 merging cylinder. The second wheel folding cylinder is running with reduced, z. B, half the speed and takes the sheet with grippers to make a speed jump into slow motion to allow when the copy is handed over. In this way, the double-thick, particularly difficult collectible product is folded in an advantageous manner with strong slowing down, which is particularly favorable for the folding process. The rotary printing press can So run at top speed and it is not throttled by the folder. In the case of uncollected production, delivers the printing press doubles as many newspapers anyway, so here the speed can be reduced a little if necessary the first wheel fold, which must run at full speed, makes difficulties when z. B. turned corners occurred » On the other hand, the folded product is only half as thick, so easy to fold, so that in most cases it can be run at full speed the copies follow to sioh lüokenlos »But there the first

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Wheel fold takes out every second copy from the 4/2 transfer cylinder, there is a gap of behind every remaining copy Copy length. Consequently, the second wheel folding cylinder can like In the case of collective production, run at a reduced speed and accept the copies with grippers and a rapid jump in speed instead of using punctures.

The inventive solution to the problem posed opens up ways for the production of previously unknown thick products at full speed of the rotary machine. It has two different cutting points and a transfer cylinder, the one or two wheel folding cylinders are connected. In the simplest case is available:

1. a wheel folding cylinder with full running speed and Punctures when collecting and not collecting,

2. or two wheel hemming cylinders for split gear, both with full speed and punctures,

3, for maximum performance when collecting two wheel folding cylinders, whereby one with punctures at full speed and one with grippers but with considerable slowing down,

k, «in apparatus for maximum performance when collecting and when collecting nails with two wheel folding cylinders, both with grippers and b« id · with slowing down,

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In all cases that have two wheel folding cylinders a cylinder make the normal, known knife movement, e.g. describe the three-pronged hypocycloid. With the second cylinder the copy runs almost completely around the cylinder, so that the knives are only allowed to exit the folding rollers with one point. The well-known 3 * 2 wheel hemming system is used here, along with the Knife carrier with eccentric circumferential 3/2-sleeve on the 3/2-cylinder, or the knife tips are, as in patent application P 17 61 O74.I-27 or P 18 01 419.2-27, overlaid with Additional rotations path-controlled,

Embodiments of the invention are shown in the drawings and are described in more detail below. Show it:

Fig. 1 shows a folding unit. The two equipped with a collecting device Has cutting cylinder pairs, which have a 4/2 SaEiaiel- and transfer cylinder with a wheel folding cylinder work together without slowing down,

2 shows a folding unit with two pairs of cutting cylinders without a collecting device, via a 5/2 collecting and transfer cylinder with a wheel folding cylinder without slowing down work together

3 shows a folding unit with two pairs of cutting cylinders without a collecting device. You is a Sanunel and the result is a β cylinder connected downstream with 5/2 circumference, on which at a distance of 120 ° two wheel folding cylinders arranged without slowing down

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Fig. K shows a fur with two pairs of cutting cylinders set up for collecting, which deliver the specimens to a Samine 1 and transfer cylinder. They are folded away by two wheel folding cylinders, the first of which works without, the second without or with slowdown,

Fig. 5 ^e i ° folding unit with two pairs of cutting cylinders without a collecting device, which work together with a collecting cylinder with a 5/2 circumference. In the case of uncollected production, the copies are alternately delivered to transfer cylinders with a 4/2 circumference, which are offset by 120 on the 5/2 collecting cylinder. The copies are folded away by two wheel folding cylinders, which run slower than the transfer cylinders.When production is collected, a transfer cylinder and the associated wheel folding cylinder are shut down,

6 shows a side view of a rotary printing press with ten printing units. The five units are running Strips on two fold formers each next to each other,

7 the arrangement of the folder of the printing press according to FIG. 6,

FIG. 8 shows a folding mechanism according to FIG. 2, but with a 4/2 transfer cylinder which is arranged between the 5/2 transfer cylinder and the wheel folding cylinders,

/8th

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A first example of the inventive arrangement of the relevant The cylinder of a folding unit is shown in FIG. Paper webs 101 and 102 are driven by 1/2 cutting and collecting cylinders I03 and 104 cut to copy length and 2/2 useful cylinders 105, I06 either collected or not collected to hand over. The copies are taken over from them by a 4/2 collecting and transfer cylinder 107 and sent to one 2/2-wheel folding cylinder 108 with two knives, which they folds away between folding rollers 109, 110. The wheel folding cylinder could, for. B. also have 3/2 circumference and with three folding knives work.

When collecting, a row of dots is created on the wheel folding cylinder removed or controlled accordingly.

The circumference ratio of the cylinders involved can, however, also be used instead of 1: 2: 4: 2 (with collection on the cylinder with 1/2 circumference) 2: 3: 4: 2 with collecting on the cylinder with 3/2 circumference.

Paper webs 151, 152 can also, as shown in FIG. 2, be cut by 2/2 cutting cylinders 153, 154 and transferred to 2/2 utility cylinders 155, 156. The copies are collected by a 5/2 collecting cylinder I56 and folded away between folding rollers 158 »159 ^{by a 2/2 wheel folding cylinder 157t which is equipped with two knives.}

__A A

But the UmfangBverhältnia the cylinder can also place 2: 2: 5 '2

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2: 2: 5: 3 (three rotating folding knives) and cutting and usable cylinders can be 2: 2 or 3 »3 with three cutting knives, which results in more favorable pinpoint controls. Kik with four knives is also conceivable «

According to FIG. 3, the webs 201, 202 (similar to FIG. 2) are cut by 2/2 cutting cylinders 203, 204 against 2/2 utility cylinders 205 »206 and the copies are cut onto one 5/2 collecting cylinder 207 collected. However, on this one are in Two 4/2-wheel folding cylinders 208, 209 arranged at a distance of 120 °, which the copies between folding rollers 210, 211 or 212, fold away. The wheel folding cylinders 208, 209 are each with two Equipped with folding knives. The folding knives of the wheel folding cylinder 209 are controlled so that they emerge only between the folding rollers 210, 211.

When collecting, either a wheel folding cylinder, e.g. 208, becomes complete turned off or it will be from the wheel folding cylinder 208 the Punctures shut down so that he cannot accept any copies there.

In Figure 4, a variant of the folder in Figure 1 is shown, in which instead of d ·· one wheel folding cylinder 108, two wheel folding cylinders 258, 259 are connected to the transfer cylinder. The webs 251, 252 are here by 2/2 cutting cylinders 253ι 254 cut The Exeeplere are made by 3/2-cylinder 255, 256 are transferred directly to a 4/2 transfer uneaaylinder 257 (double production) or can also be collected on them

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will. In the case of double production, both wheel folding cylinders 258, 259 work, with the wheel folding cylinder 258 from the transfer cylinder 257 accepts every second copy and folds it away. When * collecting missing due to the collecting process for the wheel hemming cylinder 258 certain specimen. The wheel folding cylinder 258 can then be shut down. Since when collecting on the transfer cylinder 257 after each occupied field is followed by a free field, the wheel folding cylinder 259 can run more slowly without causing disturbances. because the copy moves to the free field of the transfer cylinder when it decelerates 257 can slip. In an advantageous manner, the double-thick collection product can thereby be slowed down considerably be folded. But even with uncollected production there is a free field, since then the folding cylinder 258 each 2nd copy folds away. Therefore, the wheel folding cylinder 259 always work at a slower speed while the first wheel folding cylinder 258 must fold at full speed because for the wheel f <; cylinder 258 the specimens at! Production still come without a break.

In order to allow both wheel folding cylinders to slow down when production is doubled, a V2 transfer cylinder 308, each with two rotating FalzMiiern, is required in the folding unit, according to FIG. 309 arranged. The webs 301, 302 are cut into sheets by 2/2 mesa cylinder 303t 30k,

305,306

which by 2/2 useful cylinder Y «n a 5/2 collecting cylinder 30? be handed over. The 4/2 transfer cylinder 3O8 takes every second one Copy of the collecting cylinder 307 "b," o that only every second one

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Field of the transfer cylinder 308 is occupied. Therefore, the wheel folding cylinder 310 can run at half speed. The delayed copy can slip on the circumference of the transfer cylinder 3O8 when it is accepted by the gripper 312 of the wheel folding cylinder 310 without causing disturbances because the subsequent field of this cylinder 3O8 is free _e The same applies to the cylinders 309 and 3II.

Of the three tips of the hypocycloid, the rebate knives of the cylinder 310 two must be controlled away, so that the folding knives only emerge between the folding rollers 313t 314.

With double production, i.e. when both wheel folding cylinders 310 and 311 work, the specimens are driven by the paddle wheels 315, 316 deposited on the conveyor belts 317, 3I8.

However, the advantages of a double output can be found in collective production by installing a transfer route 319 that connects the conveyor belts 317 and 3I8. To achieve the Splitting effect is a working under the wheel hemming cylinder another paddle wheel arranged. So when the wheel hemming cylinder 310 is shut down, a paddle wheel 320 becomes next to the paddle wheel 315 provided. The paddle wheel 315 is half of the Blades removed and mounted on the hub of the blade wheel 320, so that every second copy is on the transfer route 319 can be deposited, which forwards them to the conveyor belt 318. When the wheel folding cylinder 311 mtiji is shut down accordingly Installation of a paddle wheel 321 must be proceeded.

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Xn Figure 8 is a folding mechanism, similar to Figure 2 shown, the is only intended for collective production.

The webs 401, 402/2 cutting cylinders 403, cut 404 on copy length and the specimens of 2/2-groove cylinders 4O5 _f 4o6 are accepted and passed to a 5/2-collecting cylinder 407 which it picks up from the second The collected copies are removed from the 4/2 transfer cylinder 4o8, on which every second field is now free. The copies are taken over by a 3/2-wheel folding cylinder, which has two grippers 410 and two folding knives and runs at half speed. According to the invention occur here, as also z. B * explained in Figure 4, no disturbances, because if the copy is delayed by the folding cylinder 409, the copy can slide onto the free field of the transfer cylinder 408 in FIG. 4 removes every second copy from cylinder 408 with uncollected production and thus provides for the gap in the copy stron that allows the wheel folding cylinder 409 to work with slowing down *

A printing machine with which such thick newspapers are produced can be, is shown in Figure 6 «The folding. 351 is arranged in the middle of the machine · To the right and left of it there are five printing units 352, their paths come from the roll stars 354. Five lanes 353 each are guided above the funnels 355 »356 bmw, 357, 358 · Naoh the longitudinal cutting and the longitudinal falsing, the webs $ like eu

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described before, passed through the cutting devices and folded.

An example of such a paper guide is shown in FIG. The webs on the right side of the machine are guided over the formers 357 »358. Below are the formers 355 »356 arranged through which the trajectories of the left Side of the machine to be folded lengthways.

By guide rollers 359, the sheets are of the right and left machine was te merged "The combined paper ribbons 360 a first cutting cylinder group, the strands are supplied to 36I of the second cutting cylinder group of the folders described"

According to the examples listed, the required extremely thick newspaper copies can then be folded.

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Claims (1)

29.4.69 Claims 1.) Folding unit, for web-fed rotary printing machines for production of particularly thick newspapers, characterized in that the necessary incoming paper strands on two different Interfaces are divided, in a manner known per se with facilities for collecting and non-collecting are equipped, and that both cutting cylinder groups, the severed sheets a Sanunel or transfer cylinder feed and this sainmel or transfer cylinder or two cylinders with rotating folding knives for the actual transverse folding process, if necessary with the interposition a transfer cylinder are arranged downstream, two or four or four fold formers in a known manner Turning bars above the cylinder group for merging of the individual paper webs can be used. 2. Folding unit, for production of web-fed rotary printing machines of particularly thick newspapers, characterized in that the necessary incoming paper strands (101, 102) on two pairs of cutting cylinders (103, 105 | 104, 106 $) are divided, which in a known manner with devices for Gathering or not gathering are equipped, and that both Cutting cylinder pairs (103, 105l 104, 106f) the collected Merge sheets on the same point of a transfer cylinder (107) and from there a Raderfala cylinder (108) of the usual design for the transverse fold. / 15 009846/0079 29.A.69 3. Folding unit for rotary machines, characterized in that the incoming paper strands (151 »152) are divided into two pairs of cutting cylinders (153t" I55j 15 ² * »156j) which have no conventional collecting device and that both pairs of cutting cylinders (153» 155 $ 15 ^ »156 $) transfer the uncollected copies to a roll and transfer cylinder (156) with a preferably 5/2 circumference, which transfers the combined copies either directly (uncollected) or after repeated circulation (collected) to a wheel folding cylinder (157) of the usual design passes on to the cross fold. 4 «folder for rotary machines according to claim 2, characterized characterized in that the transfer cylinder (257) is a straight one Has number of punctures which are assigned in pairs to two wheel folding cylinders (258, 259), one wheel folding cylinder (259) having devices known per se which because * the folding knife can only emerge into the folding rollers and thus allows the copies to run around and the Even when collecting, active wheel folding cylinder runs with reduced peripheral speed and the copies with grippers and jump in speed from the transfer cylinder (257) to Dimt, Folding unit according to claim 2, with which, however, is only collected characterized in that the wheel folding cylinder (409) is equipped with grippers (* Hθ) and runs at a reduced peripheral speed, 0Q9846 / ^0079/16 29.4.69 6. FaIzwerk according to claim 3i, characterized in that the 5/2-collecting and transfer cylinder (307) two transfer cylinders (308, 309) are connected, which when not collected Production alternately accept one copy each, while with collective production a cylinder group (e.g. 308, 310) is made passive, and that each additional transfer cylinder (308, 309) transfers the copies to a wheel folding cylinder (3IO, 311), which are preferably with reduced Rotate speed and the copies with grippers and accept a jump in speed. 7. folding unit according to claims 1,4 and 6, characterized in that when using two wheel folding cylinders the outputs are connected in such a way that, even with collective production, a split is caused by double bucket wheels known per se (315t 320; 316, 321f) takes place and the output is below the dormant Wheel folding cylinder is used for the cylinder in operation. 8. Folding unit according to claim 3t, characterized in that the Collecting cylinder (207) has a 5/2 circumference on which two wheel folding cylinders (208, 209) or transfer cylinders are spaced 120 ° apart are arranged. 009846/0079 ft Blank page