EP1127827B1 - Folding apparatus with a switch - Google Patents

Description

The invention relates to a folder according to the preamble claim 1.

The splitting of the product flow from folded printed copies in the folder usually takes place before the so-called third fold. The reason for this is too see that a folding device to achieve a third longitudinal fold usually enables a significantly lower throughput than that upstream of the folder Printing machine, so that when using only one folding device for production the third fold, the performance of the printing press was not fully utilized could be. So far, however, after the reunification of the partial flows it is no longer possible to assign the individual products to the different partial flows. If products are observed when observing the reunited product flow with inaccuracies in the third fold has so far been quick targeted adjustment of the affected folding device not possible. Rather, it must So far it has been tried which folding device is affected. Only when the affected Folding device is determined, an adjustment is possible. Experience has shown that this leads to a high attack of inaccurately folded and thus inferior or completely unusable products.

From US 5 119 725 it is known for cutting register regulation, on one of two To provide markings for printing material. According to DE 40 09 415 A Mark waste paper sheets and then fold them in a certain way.

Based on the problems described, it is therefore the task of the present one Invention, a folder of the type mentioned with simple and inexpensive Means to improve so that when identifying products with inaccuracies of the folding process carried out after the splitting is a targeted one Correction enables and thus the amount of waste is kept as small as possible become.

The achievement of this object is in the characterizing claim 1 specified.

With these measures, the disadvantages described at the outset are completely eliminated. By marking the products, it is advantageously possible to mark them to be allocated to the individual sub-streams. Because of the safe allocation of the products to the individual partial flows can in the case of folding inaccuracies necessary corrections are carried out with 100% accuracy become. As a result, the time period required for troubleshooting is compared to the previous one not insignificantly shortened, which reduces the amount of waste that occurs during this time has been significantly reduced so far. The measures according to the invention result accordingly a high level of user-friendliness and overall lead to one excellent economy.

Advantageous refinements and expedient further training of the parent Measures are specified in the subclaims. So the marking expediently only in one during a subsequent processing of the products removable product area. The products stay accordingly salable, unless the folding error stands in the way.

Another advantageous measure can be that of marking of the products on them a visible or feasible marker is applied. Such an agent can be sprayed on in an advantageous manner or sprayed on, which is a gentle, non-contact application allows. Especially in the case of a spray application is advantageous high accuracy is also guaranteed.

A particularly useful training for the higher-level folder can consist in that in the area of the common delivery device Switching device for actuating the marking device is arranged. This ensures that the product flow on the common Delivery device observing printer upon detection of Folding inaccuracies the marking device according to the invention at short notice can operate manually. The marked ones appear after a short time Products on the common delivery device, making an assignment of the Products for the individual partial flows and thus also an assignment of the faulty products to the relevant folding devices is possible.

The marking device is in the area between the Folding device of the assigned partial stream and the common one Delivery device arranged. This ensures that the Marking device marks passing products on its outside so that the marking is also in the area of the common Laying device is clearly recognizable.

With the usual splitting into two partial streams, it is sufficient if the products only of a partial stream are marked. This allows the effort required keep within limits and achieve a good sense of meaning.

Further advantageous refinements and expedient further training of the overriding measures are specified in the remaining subclaims and from the example description below with reference to the drawing removable.

Figur 1

eine Seitenansicht eines Falzapparats mit zwei übereinander angeordneten Längsfalzeinrichtungen für einen sogenannten dritten Falz und

Figur 2

einen Schnitt entlang der Linie II/II in Figur 1 in schematischer Darstellung.

In the drawing described below:

Figure 1

a side view of a folder with two superimposed longitudinal folding devices for a so-called third fold and

Figure 2

a section along the line II / II in Figure 1 in a schematic representation.

The folder on which the drawing is based contains, as best, from 1 can be seen, a cross cutting device 1 for dividing a supplied, usually already having a first longitudinal fold Web strands 2 in successive products, one of the cross cutting device 1 downstream transverse folding device 3 for producing a transverse fold and two the transverse folding device 3, arranged one above the other, here as Longitudinal folding devices 4, 5 designed for producing a so-called third fold. Located downstream of the cross folder 3 a switch 6 through which the cross-folding device 3 leaves Product stream 7 in two the longitudinal folding devices 4 arranged one above the other, 5 assigned, superimposed partial streams 8, 9 is split.

The partial streams 8 and 9 leaving the longitudinal folding devices 4 and 5, respectively can, as can best be seen from FIG. 2, optionally separated from one another supplied or again to a respectively assigned paddle wheel 10 or 11 united and fed to a common paddle wheel. The Common paddle wheel in the example shown is that with separate delivery Bucket wheel 10 assigned to the lower longitudinal folding device 4. Accordingly, only the upper product stream is optionally in the Paddle wheel 11 or the paddle wheel 10 fed. For this, the top one Longitudinal folding device 5 a pivotable by means of a cylinder 12 Subordinate transfer device 13, by means of which the upper partial flow 9th either in your own paddle wheel 11 or together with the lower one Partial stream 8 are fed into the associated paddle wheel 10 can.

Figure 2 is based on the situation in which both partial flows 8, 9 into the Paddle wheel 10 is fed in and in the form of a common shingled stream 14 by means of a delivery belt 15 assigned to the paddle wheel 10 become.

Of course, production without a third longitudinal fold is also possible. For this the longitudinal folding devices 4, 5 are simply passivated and the continuous ones Products designed without a third longitudinal fold. This can be done across the Paddle wheels 10 and 11 arranged paddle wheel 16 may be provided. at Such a production can also dispense with splitting. Accordingly, only one paddle wheel of the type indicated at 16 needed. Each paddle wheel is, as already indicated above, a Delivery belt assigned on which the products in the form of a shingled stream be filed.

The longitudinal folding devices 4, 5 are adjustable, so that the third longitudinal fold lies exactly at the specified point. If that Operating personnel determines inaccuracies in the position of the third longitudinal fold, the affected longitudinal folding device 4 or 5 is adjusted so that the error is corrected. In order for the operating mode on which FIG. 2 is based, in which the Products of the two partial streams 8, 9 in the form of a common scale stream 14 are designed to have a faulty or inaccurate third fold Assign products to one or the other partial stream 8 or 9 straight away and to be able to adjust the relevant folding device 4 or 5 in a very targeted manner, the products of a partial stream 8 or 9 are marked. It is sufficient if the Marking briefly when an error of the type mentioned above is found he follows.

For this purpose, a marking device is assigned to one of the partial streams 8 or 9 17 provided, which is arranged in the region of the delivery belt 15 Switching device 18 can be activated manually, as by the signal line 19 is indicated. A transported away by means of the delivery belt 15 Shingled stream 14 monitoring printer working on individual products Ascertaining inaccuracies of the third fold, the switching device 18 can immediately actuate, whereby the marking device 17 is activated. One is enough brief activation. Shortly after activation of the Marking device 17, the marked products appear within the common scale stream 14 on the delivery belt 15. Due to the Each product can be assigned to the assigned partial stream 8 or 9 so that depending on which products are defective, the folding device 4 or 5 can be adjusted.

In the illustrated embodiment, the marking device 17 is the upper longitudinal folding device 5 associated partial flow 9 assigned. The Operating personnel therefore know that the upper longitudinal folding device 5 must be readjusted if the marked products contain a faulty one third fold. Unless the unmarked products are faulty Third fold can be seen, the lower longitudinal folding device 4 must be adjusted become.

The marking device 17 is expedient in the area between the common delivery device, here the paddle wheel 10, and one upstream longitudinal folding device, here the longitudinal folding device 5, arranged. This ensures that the products are marked on the outside takes place so that the marked products in the area of the scale flow 14 easily are recognizable. In the example shown, the marking device 17 is on the pivotable transfer device 13 is arranged, the space for this offers.

The products can be marked mechanically, for example by notching etc. It is useful to mark the products with a liquid Markers applied in the form of color or ink. The Marking device 17 is preferably arranged and / or so controllable that the marking only in one during subsequent processing of the products removable product area, for example in the area of a a later smooth cut removable edge.

Instead of color or ink, a fluorescent marker can also be used applied that is not visible under normal light and under UV light or black light can be made visible. The advantage is there in that you can mark in the middle of the print without it to make it unusable.

The marking device 17 is expedient with a spray or spray nozzle 20 to achieve a contactless application of the marking agent Mistake. However, the use of a wiping nozzle would also be conceivable. at Is using a thin, focused jet spray nozzle A targeted placement of the marking order is advantageously possible.

The products of a partial stream can always remain unmarked, because of the Marking the products of each additional partial flow makes a distinction possible is. If there is more than one additional partial stream, the Products of these sub-streams to achieve the desired distinctness marked differently. The same, of course, applies to the products all partial flows are marked.

Claims (9)

1. Folding apparatus having a switch point (6) for splitting a product stream (7) into a plurality of part streams (8, 9) each containing at least one adjustable folding unit (4, 5) which is constructed as a longitudinal folding unit, these part streams (8, 9) being capable of being supplied to a common delivery unit (10, 15), characterised in that associated with one part stream (8 or 9) is a marking unit (17) for marking the products passing it, with the marking unit (17) being arranged in the region between the common delivery unit (10, 15) and an upstream folding unit (5).
2. Folding apparatus according to Claim 1, characterised in that a visible or revealable marking agent may be applied the products for marking them.
3. Folding apparatus according to Claim 1, characterised in that the marking unit (17) may be activated manually.
4. Folding apparatus according to Claim 1 or 3, characterised in that a switching unit (18) for actuating the marking unit (17) is arranged in the region of the common delivery unit (10, 15).
5. Folding apparatus according to one of the preceding claims, characterised in that one part stream (8) has no marking unit.
6. Folding apparatus according to one of the preceding claims, there being associated with the part streams (8, 9) folding units (4, 5) which are arranged one above the other, characterised in that the part stream (8) passing through the bottommost folding unit (4) has no marking unit, and in that the marking unit (17) respectively associated with all the other part streams (9) is arranged on a transfer unit (13) arranged downstream of the respectively associated folding unit (5).
7. Folding apparatus according to one of the preceding claims, characterised in that the marking unit (17) has at least one nozzle (20) which may be acted upon by a marking liquid.
8. Folding apparatus according to Claim 7, characterised in that the nozzle (20) is constructed as a spray nozzle for application without contact.
9. Folding apparatus according to one of the preceding claims, characterised in that the marking unit (17) may be arranged and/or controlled such that the marking is only performed in a region of the product which is removable on subsequent processing of the products.

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