DE3126279C2 - Folder for web-fed rotary printing machines with flat sheet delivery - Google Patents

Abstract

A folder for a rotogravure, offset or high-pressure web-fed rotary press is used instead of a separate sheet delivery device to deliver flat sheets. For this purpose, the guidance of the conveyor belts in the folder is changed in such a way that the flat sheets laid out as individual envelopes or collectively are fed directly or indirectly to a delivery device by the cross cutter.

Description

3 4

ne, so use deep, offset and letterpress. are arranged, as indicated by means of guide rollers 25a

Advantageous refinements of the invention are shown in the drawings in the case of the second arch guide 30a Subclaims indicated. a possibly required

With the aid of the drawings, an implementation is made before changing the effective length of the endless belts game of the invention explained It shows 3 can, for. B. achieved by tape storage (not shown)

F i g. 1 a folder at the delivery of folded. Another way to pray for retooling Arc; it says that the sheets required for flat sheet production

F i g. 2 one of the F i g. 1 corresponding schematic sketch additional pulleys in exchangeable of the folder after the conversion to Planobo cassettes, the counter-display on the housing 2. 10 are stuck.

F i g. 1 shows in a schematic way a folding device. In the manufacture of piano sheets, the from

advice for a rotogravure rotary printing machine printing unit coming paper web in cross cutter 4 with a housing 2, a cross cutter 4 with a cut, and the resulting piano bow Knife and one groove cylinder, two Oberführzylin- 26a are then as a single sheet from the cross cutter the 6, a collecting cylinder 8. a flap cylinder 15 4 with the help of the sheet guide 16a on the transfer cylinder 10, a bucket wheel 12 with blades 13 and an anther 6 are transported past to the flap cylinder 10. Order of endless delivery belts 14. To the trans- From the flap cylinder 10, the piano bows 26a arrive port the cut sheets that are shown in the drawing with the help of the sheet guide 30a to the Auskgeeinrichtung 26, one of the transfer cylinders 6 34a, which are shown in FIG. 2 in a schematic way as a display and the band line 16 20 band associated with the collecting cylinder 8 is shown

of two endless belts 18, 20, which are extended by a number of

Deflection rollers are performed. Furthermore, the collecting cylinder brake (not shown) and a device (not shown) 8 shows an endless cover band 22 and the flap cylinder) for overlapping successive planes or 10 an endless cover band 24 with Umlenki ollen 25 bows and a scale-shaped display of the piano bows assigned 25 provided. These facilities can be conventional

In the production of folded sheets, the more Bz-type works and are expediently syn-folding apparatus as in FIG. 1 indicated, driven by the flap cylinder 10 in the usual manner. So it could be: The z. B. a so-called tail brake used who-paper web is used for the production of individual sheets 26 the. in which the piano sheets are on a cylinder provided with a rubber band cut in the transverse direction by the cross cutter 4 at their rear ends and the sheets 26 are then gripped by the collecting cylinder 8. In order to overlap the piano arches, the use of clocked blown air would be conceivable from (visually indicated) griffins,
be kept away from 28 or punctures. Another option is to use the planobo-

They are transferred to the flap cylinder 10 in transverse directions by means of a ribbon cable that is on one side with device folded and the folded sheets 26 are provided between 35 vacuum openings is to be braked, and see the blades 13 of the paddle wheel 12 released, upstream of this sheet brake to overlap from where they are to be provided in a scaled form on the display conveyor step in the transport route of the rlanobogen. Oaths 14 can be stored. However, an overlap is not absolutely necessary;

In Fig. 2 the folder has been converted in such a way that instead of the shingle you could also directly use a stack that it is suitable for displaying piano bows 26a.

for this purpose, the ribbon line 16 is modified so that

it serves as a bow guide 16a, the piano bow 26a for this purpose 2 sheets of drawings

bypassing the collecting cylinder 8 directly to the in

In this case, the flap cylinder 10 not used for folding is supplied. In addition, the flap cylinder 10 is 45
assigned a further bow guide 30a, which removes the piano bow from the flap cylinder 10 while bypassing the
Bucket wheel 12 feeds directly to a delivery device 34a arranged above the bucket wheel 12

As already mentioned, the arch guide 16a becomes 50
by changing the tape guidance of the tape line 16
For this purpose, the endless belt 20a serving as the upper belt is formed from the transfer cylinders 6 up to
pulled the shroud 24a of the flap cylinder 10,
and the underhand endless belt 18a is from 55
the transfer cylinders 6> with partial wrapping
of the collecting cylinder 8 is also drawn to the shroud 24a. Additional pulleys 17a are provided for this changed tape guide.

The sheet guide 30a is changed by a changed ω
Tape guide of the cover tape 24a and a guide rail 32a are formed.

The ones required to change the tape guide
additional pulleys, such as B. the pulleys
17a, can be housed in the housing 2 at all times. 65
The change in the tape guide can also be achieved, at least in part, by the fact that pulleys can be pivoted on deflection rollers, which are already present for the production of the folds

Claims (8)

1 2 are used for perfectly bound printed products. Patent claims: den) the folder is usually replaced by a separate sheet delivery 1. Folding device for rotary printing ma- terials flat sheet delivery requires a corresponding machine, which is used for the delivery of piano sheets, the equipment-related expense. Furthermore, since the Planobobar is precisely laid out with a separate cross-cutting device, the piano sheets are usually laid out as fourfold a collecting cylinder, a flap cylinder and sheet, the piano sheets have to be rearranged and cut after being disengaged from a delivery device. It also shows that for the piano sheets a sheet-like delivery device in general ηιτ the half-cylinder (8) bypassing the sheet guide (16a; vor- io be work performance compared to the folders, seen and the flap cylinder (10) with a bottom case Furthermore, an immediate gene guide (30a) as transfer of the piano sheet waste removal is not possible for flat sheet delivery. is designed for display From DE-OS 27 04 813 is already a folding apparatus 2. Folding apparatus according to claim 1, characterized by something of a different type known, which is not only used for distinction that the sheet guide (16a, 30aJ for the direct position of cross-folded products, but also for the ten feeding of the piano sheets to the display (34a; display of piano sheets can be used by bypassing a paddle wheel (12), the flat sheet delivery is the paper web that runs on the Samdet is cross-cut milk cylinder after switching off the 3. Not folding device after one of the preceding puncturing needles provided on the collecting cylinder Claim «*., Characterized in that the bow 20 to the KJappenzylinder, but vertically downwards leadership <ISa, 30a; at least partially by changing a separate structural unit, which consists of two Zugrung the strip guidance of the rollers for the hemming production, a deflection tongue, a paddle wheel and other items Conveyor belts (18, 20, 24) formed! E belts consists of the delivery of the cross-folded is products on the one hand and unfolded products on the other- 4. Folding apparatus according to claim 3, characterized on the other hand, thus takes place at different points of the folding mark that to change the tape guide to apparatus, what a corresponding spatial essence Deflection pulleys (17a / are provided or wall unavoidable also makes the delivery of the piano some the folds intended for folding production are allowed to roll vertically downwards instead of diagonally downwards (25) changeable, especially te be somewhat problematic. pivotable, are arranged. 30 The invention is based on the object 5. Faizapparat according to claim 4, characterized in that the folding apparatus of the type specified at the outset is whitewashed, that the additional Uniicnkroücn (17 "; in terzubüden, that it is not only for display of querge cassettes are arranged, e "e on the housing (2) fold out arches, but also suitable for piano arches are exchangeably attachable. is with the option of using the piano bow in the same 6. Folder after one! of claims 3 - 5, 35 area of the folder as the cross-folded sheets marked by tape storage for change. the effective length of the conveyor belts (I8a, This task is performed on a folder with the 20a, 24a; initially specified features according to the invention 7. Faizapparat according to one of the preceding characterized in that for the piano bow one of the Sam claims, characterized in that the upper 40 melcylinders are provided bypassing sheet guides and guide a flap cylinder (10) associated with the KJappenzylinder with a sheet guide as an over-shroud (24a ; and a guide rail (32a; guide the piano bow is designed for display)
points According to the invention are thus after retrofitting 8. Faizapparat according to claim 7, characterized in that the folding apparatus for the flat sheet delivery is cut that the collecting cylinder (8) bypassed 45 th sheets from the cross cutter or a nachgede Sheet guide (16a; an endless upper belt (20a; switched pair of pulling rollers bypassing the and an endless lower belt (ISa; has the melzylinders directly attached to the flap cylinder Cross cutter (4) made by two overpasses from where they are brought to the delivery. this Guide cylinder (6) around to the flap cylinder (10) offers the possibility of the piano bow in the same and its associated cover band (24a; guided 50 area to be designed as the folded products. the endless lower band (18a; the special feature is retained in this case, the pillar cylinder (8) to be interpreted in a direction inclined to the vertical, partially looped, which is considerably less problematic than an AbIa- ge in the vertical direction. 55 Compared to conventionally provided separate flat sheet booms, the invention The invention relates to e .ien folding apparatus for roll dimensions solution the advantage that in the flat sheet rotary printing machines, which practically doubles the output for the display of piano production is usable with a separate cross cutting there. A rearrangement of the piano bow and a re-installation, a collecting cylinder, a flap encyclopedia of trimmed cutting in the further processing fall linder and a delivery device. otherwise gone, since in the retooled according to the invention Previously known folders of this type, as they ten Faizapparat the piano sheets as single sheets. z. B. from DE-OS 28 37 271 and DD-PS 1 23 519 are placed. Furthermore, an immediate waste disposal are known, serve to take the grain from the printing unit possible. The apparatus-related expense as well paper web for the production of newspapers, time, maintenance and repair costs are comparable To cut, fold, and pass documents to a minimum. gain. In the production of so-called Planobo- The folder designed according to the invention leaves genes (i.e. unfolded sheets, as they are, for example, envelopes in every type of web-fed rotary printing machine