EP0384147B1 - Method and apparatus for temporarily storing multi-sheet folded printing products such as newspapers, magazines and parts thereof - Google Patents

Abstract

In the overlapping formation (S') to be wound up together with a winding band (4) into a roll, the individual multi-sheet double-folded printing products (3) are inclined at a small angle ( alpha ) with respect to the conveying direction (B). The laterally protruding corners (3c, 3d) of the printing products (3) here lie on imaginary straight lines (7, 8) which run parallel to the conveying direction (B). The lateral folded edges (3b) of the printing products (3) are mutually offset by a certain amount (a) in a direction (C) running transversely with respect to the conveying direction (B). The lateral folded edges (3b) therefore do not come to lie one above the other during winding-up, this preventing a thickened region on one side of the roll. <IMAGE>

Description

The present invention relates to a method and a device for the intermediate storage of multi-sheet, folded printed products, such as newspapers, magazines and parts thereof, according to the preamble of claim 1 and claim 9.

A method and a device of this type are known from DE-PS 31 23 888 and the corresponding US-PS 4,438,618. In the case of printed products which are folded twice, they are fed to the winding core or the winding formed on the latter with their lateral folded edges aligned with one another in the conveying direction and wound up together with the winding tape coming to lie on the outside. The side fold edges lying on top of one another now result in a greater increase in the winding radius on one side of the winding. This one-sided radius increase is particularly noticeable in the case of thick printed products and / or large diameter windings. The circumference of the winding now no longer essentially forms a cylindrical outer surface, but the outer surface of a circular truncated cone. The consequence of this is that the winding tape moves laterally away from the central position and the cohesion of the printed products in the winding is thereby considerably reduced or even lost.

The present invention is based on the object to create a method or a device of the type mentioned at the outset which makes it possible to also wind up thick, folded printed products with a fold edge lying on the side to form coils of large pressure gauge which are stable in themselves, without the actual winding process being adapted, that is to say the the tensile force to be applied and the central guidance of the winding tape need to be changed.

This object is achieved according to the invention by the features of the marked part of claim 1 or claim 9.

By feeding the printed products in a formation in which all or some of the printed products have the lateral folded edges offset from the lateral folded edges of adjacent printed products in a direction transverse to the conveying direction, not all the lateral folded edges come to lie in the winding, so that an undesirable thickening on one side edge of the roll is avoided. Even with thick printed products and large diameters, the windings become even enough so that the windings can be wound compactly without it being necessary to increase the tension in the winding band or to move the winding band from the center to the outside. This means that in the same way, that is to say with the same device, both printed products without a side fold edge and those with a side fold edge can be wound up.

Preferred further developments of the invention The method and the device according to the invention form the subject of the dependent claims. In particular, the embodiments defined in claims 2 to 6 and 10 to 16 are characterized by simplicity.

• Fig. 1 perspektivisch und vereinfacht eine Aufwickelstation,
• Fig. 2 ein mehrteiliges, zweimal gefaltetes Druckereierzeugnis in perspektivischer Ansicht,
• Fig. 3 und 4 in Draufsicht verschiedene Formationen, in denen die Druckereierzeugnisse bezüglich ihrer Förderrichtung leicht schräggestellt sind,
• Fig. 5 in Draufsicht eine Vorrichtung zur Bildung der in Figur 3 gezeigten Formation,
• Fig. 6 in Draufsicht eine Formation, in der eine Gruppe von Druckereierzeugnissen gegenüber einer Gruppe von vorauslaufenden Druckereierzeugnissen seitlich versetzt ist,
• Fig. 7 im Schnitt einen Teil eines durch Aufwickeln der Schuppenformation gemäss Figur 6 gebildeten Wickels, und
• Fig. 8 - 10 verschiedene Vorrichtungen zum Bilden von Schuppenformationen der in Figur 6 gezeigten Art.

Exemplary embodiments of the method according to the invention and the device according to the invention are described below with reference to the drawing. It shows purely schematically:

• 1 perspective and simplified a winding station,
• 2 is a multi-part, twice folded printed product in a perspective view,
• 3 and 4 in plan view different formations in which the printed products are slightly inclined with respect to their conveying direction,
• 5 shows a top view of a device for forming the formation shown in FIG. 3,
• 6 is a top view of a formation in which a group of printed products is laterally offset from a group of leading printed products,
• 7 shows in section a part of a roll formed by winding up the scale formation according to FIG. 6, and
• 8-10 different devices for forming scale formations of the type shown in FIG. 6.

The structure of a winding station will first be explained with reference to FIG. 1. The winding station 1 shown in simplified form in this FIG. 1, which corresponds to the winding station described in DE-PS 31 23 888 and corresponding US-PS 4,438,618, has a winding core 2 which is rotatably mounted in a manner not shown. This winding core 2 are fed by a conveyor device, not shown, in a scale formation S 'twice folded printed products 3 in the direction of arrow B. The printed products 3, which may be newspapers, magazines or parts thereof, lie on top of one another in the manner of roof tiles, with each printed product 3 in each case partially covering the preceding product. The leading edge 3a is formed by one of the fold edges, while the other fold edge 3b is on the side. In the winding station 1 this scale formation S 'is now wound together with a winding tape 4 on the winding core 2. The winding tape 4 is pulled off a supply spool 5. Forming the wrap 6 is described in more detail in the two aforementioned patents.

FIG. 2 shows an example of a printed product 3 to be wound up according to the present invention. This consists of three nested parts 3 ', 3˝ and 3 ‴. These parts are multi-leaf and folded twice. The transverse fold edges 3a of all parts 3 ', 3˝, 3 ‴ lie against each other, while the lateral fold edges 3b of all these parts are arranged on the same side of the product 3.

In order to avoid that when a scale formation S 'formed from such printed products 3 is wound up in the winding 6, a thickening is caused as a result of the side fold edges 3b lying one on top of the other, the printed products 3 are wound up in a formation in which, according to the invention, the side fold edges 3b of at least part of the printed products 3 are slightly offset in relation to the lateral fold edges 3b of adjacent printed products 3 in a direction which runs transversely to the conveying direction B of the printed products 3. Various such formations and devices for their formation are now explained below with reference to FIGS. 3 to 10.

In Figures 3 and 4, the winding core 2 formations S 'are shown in plan view, in which the individual printed products. 3 are slightly inclined relative to their conveying direction B. This inclination is characterized by the winding α. The lateral fold edge 3b of each printed product 3 is offset from the fold edge 3b of the neighboring product 3 in the direction of arrow C by the amount a. The laterally projecting corners 3c, 3d of the printed products 3 lie on an imaginary line 7 and 8, shown in broken lines, which runs parallel to the conveying direction B. The direction C, in which the lateral fold edges 3b are offset from one another, runs transversely to the conveying direction B and forms an angle with it which is smaller by the angle (FIG. 3) or greater (FIG. 4) than 90 °. The formations shown in FIGS. 3 and 4 differ only in the direction of inclination of the products 3 with respect to the conveying direction B.

It is now evident that when a scale formation S 'according to FIG. 3 or FIG. 4 is wound onto the winding core 2, there is no excessive thickening on the side of the winding 6, since the lateral folded edges 3b do not all lie one above the other over their entire length. This means that 3 compact windings can be formed in this way even with thick, twice-folded printed products, without a change or adaptation being necessary during the winding process. This means, in particular, that neither the tension in the winding band increases nor the band has to be moved from the center towards the side.

FIG. 5 shows a top view and purely schematically of a device for forming the formation shown in FIG. 3. The conveyor device designated 9, which conveys the printed products 3 to the winding station 1, has a feed conveyor 10 which is designed as a belt conveyor and to which a second belt conveyor 11 connects. The latter is inclined relative to the feed conveyor 10, that is to say the conveying direction B of the second belt conveyor 11 forms an acute angle α with the conveying direction A of the feed conveyor 10. Above the belt conveyor 11, a pressure roller 12 is arranged in the beginning section of the belt conveyor 11, which sits at one end of a pivotably mounted lever 13. In the area of At the end of the feed conveyor 10, a holding roller 14 is provided, which is also mounted on a pivotably mounted lever 15. Both rollers 12, 14 are freely rotatable, but it is also possible to drive the rollers 12, 14. The directions of rotation of the rollers 12, 14 are in the same direction to the conveying directions B and A of the assigned belt conveyors 11 and 10, respectively. The distance b between the two rollers 12, 14 is somewhat larger than the length 1 of the printed products 3.

The printed products 3 are fed by the feed conveyor 10 in a scale formation S, in which the lateral fold edges 3b of the printed products 3 are aligned with one another in the conveying direction A. When the printed products 3 pass from the feed conveyor 10 to the belt conveyor 11, they are conveyed further in the conveying direction B, which, as already mentioned, includes the angle α with the conveying direction A of the feed conveyor 10. This results in the offset a of the folded edges 3b of successive printed products 3 explained with reference to FIG of the products arriving on the belt conveyor 11. This pressure roller 12 can, under certain circumstances, be omitted.

The holding roller 14, which is preferably provided with an adhesive coating, serves to prevent the next product 3 still lying on the feed conveyor 10 from being carried away by the preceding one, which is already away from the belt conveyor 11 drawn printed product 3 is taken.

With a smooth transition of the printed products 3 from the belt conveyor 10 to the belt conveyor 11, these printed products 3 are practically not rotated, so that the leading edges 3a in the shingled formation S 'fed from the belt conveyor 11 to the winding core 2' are approximately parallel to the leading edge 3a of the through the Feeder 10 fed printed products 3rd

The conveyor speeds of the belt conveyors 10 and 11 are the same, but may also differ somewhat under certain circumstances.

The device for forming the scale formation S 'shown in FIG. 4 corresponds to the device according to FIG. 5 with the change that the belt conveyor 11 is angled relative to the feed conveyor 10 on the other side than shown in FIG.

The formations S 'according to Figures 3 and 4 can also be formed by slightly rotating the printed products 3 within the supplied scale formation S. In a device for this purpose, a freely rotatable or driven conveyor roller would be present above the feed conveyor 10, the conveying direction of which forms an acute angle, for example the angle, with the conveying direction A of the feed conveyor 10. This conveyor roller is preferably arranged such that it comes into effect approximately in the middle of the products 3. As soon as the printed products reach the effective area of this conveyor roller, they are pulled diagonally through them. Taking away the Products drawn at an angle can take place in the conveying direction A of the feed conveyor 10 or in the conveying direction of the conveying roller.

In FIG. 6, a further formation S 'is now shown in plan view, in which the side fold edges 3b of certain printed products 3 are laterally offset relative to the fold edges 3b of other printed products 3. As can be seen from this figure 6, a section 17 of the scale formation S 'is offset from the preceding section 16 in the direction of arrow C' by the amount a '. The displacement direction C 'is perpendicular to the conveying direction B of the scale formation S'. Within the sections 16, 17, the printed products 3 are aligned with one another in the conveying direction B with their lateral folded edges 3b. At this laterally offset section 17 there is again a non-offset section 16 ', which is only indicated in FIG. In the shed formation S fed to the winding core 2 'certain sections 17 are thus offset to the side at certain intervals.

In FIG. 7, part of a roll 6 is shown in section, which is formed from a scale formation S 'wound on a roll core 2 according to FIG. 6. It can be seen from FIG. 7 that the printed products 3 of the sections 17 protrude beyond the printed products 3 of the sections 16 on the side of the folded edges 3b. In this exemplary embodiment, therefore, not all of the side fold edges 3b come to lie one above the other.

The length of the laterally offset sections 17 and accordingly the length of the sections 16, 16 'can be chosen such that each turn is offset from the adjacent turns or several turns are offset from a number of other turns.

FIG. 7 further shows that the wound winding tape 4 separates the different winding layers from one another. Each winding layer is formed only by a scale formation S ', which has periodically laterally offset sections 17.

In Figure 8, a device is now shown which is used to form a scale formation S 'of the type shown in Figure 6. Between a feed conveyor 10 designed as a belt conveyor and a belt conveyor 11, which feeds the scale formation S 'to the winding core 2, a displacement device 18 is arranged, which can be moved back and forth in the direction of arrow D. This direction of displacement D is approximately at right angles to the rectified conveying directions A, B of the belt conveyors 10, 11. The displacement device 18 has two endless, driven belts 19 and 20, which are guided via deflection rollers, which are not specified. The runs 19a, 20a of the belts 19, 20 in the conveying direction A, B serve as guide elements for the side edges of the printed products 3 and are arranged at a distance c which corresponds approximately to the width d of the printed products 3. An inlet section 19b, 20b, which converges in the conveying direction A, B, is connected upstream of the guide elements 19a, 20a.

The feed conveyor 10 feeds the printed products 3 in a scale formation S, in which the side edges 3b the printed products 3 are aligned with each other in the conveying direction A. If the displacement device 18 is in its left end position as seen in the conveying direction A, B, which is indicated by dash-dotted lines, the printed products 3 fed by the feed conveyor 10 run through between the guide elements 19a, 20a without being displaced. If the displacement device 18 is now moved into the right end position shown in solid lines in FIG. 8, the printed products 3 abut with their leading corner on the inlet section 19b and, viewed in the conveying direction A, are displaced to the right by the latter. The printed products 3 shifted in this way run between the guide elements 19a, 20a and are aligned by them. The displacement device 18 remains for a certain time in the right end position, during which a section 17 offset by the amount a 'is formed. Then the displacement device 18 is moved into the left end position (formation of a section 16) and then moved back into the right end position after a certain time. The length of the individual sections 16, 17 is determined with the frequency of the back and forth movement of the displacement device 18.

It is also conceivable to arrange the displacement device centrally in a rest position in relation to the conveying direction A, B and then to move it to the left or to the right from this rest position to form the sections 16 and 17.

Instead of the circumferential belts 19, 20, stationary guide plates can also be provided, each one Guide element and have an inlet section.

FIG. 9 shows an embodiment which is similar in the mode of operation of the device according to FIG. The same reference numerals are used in FIGS. 8 and 9 for corresponding parts.

In the device according to FIG. 9, the displacement device 18 arranged between the belt conveyors 10 and 11 is formed by a belt conveyor 21 which can be pivoted back and forth in the direction of the arrow E about a pivot axis 21a perpendicular to its conveying plane. The pivot axis 21a is located at the end of the belt conveyor 21 facing the feed conveyor 10. If the belt conveyor 21 remains in its end positions for a certain time, a scale formation S 'is formed which essentially corresponds to the scale formation according to FIG. However, if the belt conveyor 21 is continuously pivoted back and forth, a wavy scale formation S 'is created, as shown in FIG. In this scale formation S ', the lateral fold edge of each printed product 3 is then offset from the lateral fold edge of the adjacent printed products. The maximum lateral displacement is denoted by a˝ in FIG. 9.

FIG. 10 now shows a further device which is capable of producing a scale formation S 'according to FIG. 6, in which FIG. 10 the same reference numerals are used as in FIG. 8.

In the embodiment according to FIG. 10, a further conveyor 22 is arranged between the belt conveyors 10 and 11, the conveying direction F of which, with the conveying direction A, B, of the belt conveyor 10, 11 forms an acute angle β. This conveyor 22 consists of a number of driven rollers 23 arranged parallel to one another. To the side of this conveyor 22 there is a stop rail 24 running in the conveying direction A, B of the conveyor 10, 11, which means by means of a displacement mechanism 25 in the direction of arrow G, that is can be moved back and forth approximately at right angles to the mentioned conveying directions A, B. The roller conveyor 22 conveys the printed products 3 fed from the feed conveyor 10 laterally against the stop rail 24, on which the printed products 3 come to a stop with their lateral folded edge 3b and are thereby aligned in the conveying direction A, B. This means that a laterally offset section 17 is formed as long as the stop rail is in its left end position, as seen in the conveying direction A, B, which is shown in FIG. 10. If the stop rail 24 is now moved to the right, as seen in the conveying direction A, B, in which it is aligned with the side fold edges 3b of the incoming scale formation S aligned with one another, there is no lateral displacement of the printed products, so that sections 16 are formed.

It is also possible to form scale formations S 'in which each printed product (3) is offset in relation to the neighboring products 3 in the direction C', that is to say approximately at right angles to the conveying direction A, B. Every second would be to form such a scale formation To move product 3 sideways.

If the printed products 3 wound up in the manner described into a roll 6 are required again for further processing, they are unwound again from the roll 6 in a manner known per se. Before they are sent to a further processing station, in most cases it will be necessary to undo the lateral displacement of the printed products as described. Since this dislocation is only very slight (approx. 5 to 15 mm), this can be done in a relatively simple manner. For example, the developed scale formations can be guided through a side straightening device of conventional design or transferred to a clocking device which has cams attached to rotating traction elements which act on the trailing edges of the printed products and thereby align them.

It goes without saying that, even in the case of scale formations constructed differently than shown, in which each printed product rests on the subsequent product, the lateral fold edges can be offset in the manner described. This also applies to scale formations formed from once folded printed products if the fold edge of these printed products is arranged laterally.

Finally, it should be noted that it is quite possible to form the scale formations S 'shown in FIGS. 3, 4 and 6 directly, for example on the delivery device of rotary printing presses. In In such a case there would not be a scale formation S in which the side fold edges of the printed products are aligned with one another in the conveying direction.

Claims (22)

1. Method for temporarily storing multi-sheet folded printed products such as newspapers, magazines and parts thereof arriving in a lapped formation (S) with a folded edge (3b) lying at the side, wherein the printed products (3) overlapping one another in the manner of roof tiles are conveyed together with a winding tape (4) towards a winding core (2) and are wound up thereon, characterized in that, for winding up, the lateral folded edge is in at least a proportion of the printed products (3) (3b) slightly offset relative to the lateral folded edge (3b) of an adjoining printed product (3) in a direction (C, C′) extending transversely to the conveyance direction (B) of the printed products (3).
2. Method according to claim 1 for temporarily storing printed products (3) arriving in a lapped formation (S), wherein the lateral folded edges (3b) of all printed products (3) extend substantially parallel to the conveyance direction (A) and are aligned with each other, characterized in that the offsetting of the lateral folded edges (3b) is produced by a change in position of at least a proportion of the printed products (3) relative to other printed products (3) before being wound up.
3. Method according to claim 1, characterized in that the printed products (3) are wound up in a lapped formation (S′), wherein the products (3) are slightly slanted relative to their conveyance direction (B).
4. Method according to claims 2 and 3, characterized in that before the winding up, the conveyance direction (A) of the fed lapped formation (S) is changed.
5. Method according to claims 2 and 3, characterized in that all printed products (3) are rotated within the lapped formation (S) before they are wound up.
6. Method according to one of claims 3 to 5, characterized in that the laterally projecting corners (3c, 3d) of the printed products (3) are moved substantially along a straight line (7, 8) extending parallel to the conveyance direction (B) of the printed products (3).
7. Method according to claims 2 and 3, characterized in that before being wound up, at least a proportion (17) of the printed products (3) is displaced relative to other printed products (3) in a direction (C′) extending approximately at right angles to the conveyance direction (A).
8. Method according to claim 7, characterized in that periodically, a number (17) of printed products (3) is displaced on each occasion.
9. Apparatus for temporarily storing multi-sheet folded printed products (3) such as newspapers, magazines and parts thereof which arrive in a lapped formation (S) with a folded edge (3b) lying at the side, with a conveyor device (9) for feeding the printed products (3) overlapping one another in the manner of roof tiles, to a winding station (1) wherein a winding core (2) is counted for rotation, to which there is connected a winding tape (4) which, extending on the side of the product formation (S′) remote from the winding core (2), can be wound up on the winding core (2) together with said formation, characterized by means (11, 12; 18) for forming a formation (S′) to be fed to the winding core (2), wherein in at least a proportion of the printed products (3), the lateral folded edge (3b) is slightly offset relative to a lateral folded edge (3b) of an adjoining printed product (3) in a direction (C, C′) extending transversely to the conveyance direction (B) of the printed products (3).
10. Apparatus according to claim 9, with a feeder (10) for feeding a lapped formation (S), wherein the lateral folded edges (3b) of all printed products (3) extend substantially parallel to the conveyance direction (A) and are aligned with each other, characterized in that the means for forming the formation (S′) to be fed to the winding core (2), with at least a proportion of the printed products (3) having laterally offset folded edges (3b), have an arrangement (11, 12; 18) for changing the position of at least a proportion of the printed products relative to other printed products (3).
11. Apparatus according to claim 9, characterized in that the means (11, 12) for forming the formation (S′) to be fed to the winding core (2) produce a lapped formation (S′) wherein the printed products (3) are slightly slanted relative to their conveyance direction (B).
12. Apparatus according to claims 10 and 11, characterized in that the arrangement for changing the position of the printed products (3) comprises, following the feeder (10), a further conveyor arrangement (11), preferably a belt conveyor, that has a conveyance direction (B) forming an acute angle (α) with the conveyance direction (A) of the feeder (10).
13. Apparatus according to claim 12, characterized by a pressure element (12), preferably a freely rotatable or driven pressure roller arranged above the additional conveyor arrangement (11) and in its starting zone, which element can be caused to act on the printed products (3).
14. Apparatus according to claim 12, characterized by a holding element (14) acting on the printed products (3), in particular a freely rotatable or driven roller, preferably provided with a friction coating, arranged in the end zone of the feeder (10) and above the latter.
15. Apparatus according to claims 13 and 14, characterized in that the distance (b) between the pressure element (12) and the holding element (14) is greater than the length (1) of the printed products (3).
16. Apparatus according to claims 10 and 11, characterized in that the arrangement for changing the position of the printed products (3) includes a conveyor element, preferably a freely rotatable or driven conveyor roller having a conveyance direction that forms an acute angle with the conveyance direction (A) of the feeder (10), and which rotates the latter when acting on the printed products (3).
17. Apparatus according to claims 10 and 11, characterized in that the feeder (10) is followed down the line by a first conveyance arrangement (11,) preferably a belt conveyor with a conveyance direction (B) acting in substantially the same direction, and that between the feeder (10) and the conveyance arrangement (11), there is arranged a displacement device (18) which can be moved to and fro transversely, preferably approximately at right angles to the conveyance direction (A) of the feeder (10).
18. Apparatus according to claim 17, characterized in that the displacement device (18) has two guide elements (19a, 20a) arranged at a distance (c) from each other, approximately corresponding to the width (d) of the printed products (3), the guide elements (19a, 20a) having at their end facing the feeder (10) an intake section (19b, 20b) that converges in the conveyance direction (A) of the printed products (3).
19. Apparatus according to claim 18, characterized in that the guide elements are formed by peripheral sections (19a, 19b) of driven belts (19, 20).
20. Apparatus according to claim 17, characterized in that the displacement device (18) is a second conveyor arrangement (21), preferably a belt conveyor that can be swivelled to and fro round a swivel pin (21a) extending at right angles to its conveyance plane and arranged at the end facing the feeder (10).
21. Apparatus according to claim 17, characterized in that the displacement device (18) has a stop element (24) adjustable approximately at right angles to the conveyance direction (A) of the feeder (10),preferably approximately parallel to this conveyance direction (A), which stop element is located in a zone of a second conveyor arrangement (22) arranged between the feeder (10) and the first conveyor arrangement (11), the conveyance direction (F) of which second conveyor arrangement forms an acute angle (β) with that of the feeder (10) and which second conveyor arrangement conveys the printed products (3) against the stop element (24).
22. Apparatus according to claim 21, characterized in that the second conveyor arrangement (22) is formed by a number of driven rollers (23) disposed parallel to each other.

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