EP0318852B1 - Super structure for a folding machine - Google Patents

Description

The invention relates to a superstructure for a folding apparatus arranged downstream of a web-fed rotary printing press and arranged transversely to it, with a set of first turning bars which can be adjusted transversely to the direction of travel of the paper web in the printing press and which, at least in magazine production, deflect the strands fed to the folder inlet, with a further set compared to the first turning bars offset, second turning bars, which deflect the strands fed to at least one folding former during funnel production and with pulling, registering and deflecting rollers assigned to the strands.

In the folder superstructures of the type mentioned above, the folder entrance is located in the area of the central longitudinal plane of the preceding printing press. The first and second turning bars are accordingly arranged one behind the other in the working direction of the printing press and alternatively in use. In order to ensure sufficient access to the turning bars arranged one behind the other, a larger passage must be provided between them. This results in long paper paths and makes paper feeding difficult. In addition, both the first turning bars and the second turning bars used as an alternative to this must be laterally adjustable in order to adapt their position to the position of the paper web, which requires a great deal of effort. Another, very particular disadvantage of this known arrangement is the fact that there are completely different paper paths for funnel production and magazine production. It is therefore necessary to provide pulling and register rollers for both types of production, which are used alternatively, which further increases the construction effort and also makes paper feeding more difficult.

Proceeding from this, it is therefore the object of the present invention to provide a folder superstructure of the type mentioned at the beginning which not only results in a comparatively simple and inexpensive construction, but at the same time also ensures a comparatively high ease of use.

This object is achieved in that the second turning bars and, for magazine production, as an alternative to the second turning bars, deflecting rollers which can be acted upon and run parallel to the folder infeed, are oriented in the same direction as the opposite to the first turning bars transversely to the direction of travel of the paper web in relation to the first turning bars and in magazine production folding machine inlet are offset that in the area between the first turning bars and the second turning bars or alternatively deflecting rollers for magazine production which can be acted upon, the pulling and registering rollers which also run parallel to the folder inlet are provided and that the second turning bars are assigned and offset relative to them in the longitudinal direction of the printing machine Folding device inlet running deflection rollers are provided for funnel production.

With these measures, the disadvantages of the known arrangement are completely avoided. Since the first turning bars are used in both hopper and magazine production, it is sufficient if only the first turning bars are laterally adjustable. The second turning bars can advantageously be arranged fixedly or mutually unadjustable, which results in a strong structural simplification. Another advantage of the measures according to the invention can be seen in the fact that the pulling and registering rollers arranged laterally offset with respect to the first turning bars can be used for both hopper and magazine production, so that only one set of the pulling and registering rollers is required, which also reduces the construction effort. At the same time, however, the number of deflection rollers required is also reduced. In addition, the laterally offset first and second turning bars or deflecting rollers are easily accessible from the front without mutual hindrance, which considerably facilitates paper feed. In this context, the small number of rollers also has an advantageous effect.

In an advantageous further development, all the paper guiding elements in the form of the first and second turning bars as well as the pulling, registering and deflecting rollers can be arranged overhung. The flying arrangement of the paper guide members results in a particularly simple paper feed.

In an advantageous further development of the superordinate measures, a side wall offset parallel to the side walls of the printing press for receiving the deflection rollers for funnel production and a front wall extending transversely to the side walls of the printing press and projecting to one side over the printing press for receiving the pulling and registering rolls, can be mutually opposed non-adjustable second turning bars and the deflection rollers for magazine production can be provided. These measures enable a reliable storage of all stationary paper guiding elements. These can preferably be at least partially overhung, which facilitates paper feed.

Another expedient measure can consist in the fact that the second turning bars, which are arranged stationary above the folder inlet, and the likewise arranged deflection rollers for magazine production are laterally offset from one another, preferably in the area of different sides of the third side wall provided with a passage window. The one provided here Stationary arrangement of the second turning bars and the deflecting rollers for magazine production which can be acted upon as an alternative results in a particularly simple construction. At the same time, there is no need for any adjustment effort when switching from magazine production to funnel production and vice versa.

According to another, particularly preferred embodiment, the second turning bars and the deflecting rollers for magazine production, which can be acted upon as an alternative thereto, can preferably be accommodated opposite one another on a pivoting wing which can be pivoted about a preferably standing axis. These measures result in a particularly compact design and, at the same time, ensure that web production is particularly easy both in magazine production and in funnel production, since in no case the elements that are only required for the other production have to be avoided. Rather, they are simply pivoted away from the area of the strand guide.

The swivel wing can expediently have an angular configuration that is open toward the second turning bars. This advantageously enables the two turning bars to be supported on both sides.

A further advantageous measure can consist in the fact that a movable cassette is provided at the height between the folder inlet and the area of the second turning bars, which cassette has at least one former and, alternatively to the folder former, can be brought into position above the folder inlet and fitted with one-of-a-kind outer trims, which can be approached partly via adjacent pull rollers and partly via the deflection rollers for magazine production which are offset parallel to the pull rollers. These measures make it much easier to switch from magazine production to funnel production and vice versa by simply moving the cassette.

Further expedient further developments and advantageous refinements of the superordinate measures result from the following description of an exemplary embodiment with reference to the drawing in conjunction with the remaining subclaims.

• Figur 1 eine schematische Ansicht eines erfindungsgemäßen, auf Magazinproduktion eingestellten Falzapparatüberbaus von vorne gesehen,
• Figur 2 eine schematische Draufsicht auf den Falzapparatüberbau der Figur 1 in der Einstellung für Trichterproduktion und
• Figur 3 eine Ausführungsvariante mit Schwenkflügel in Figur 2 entsprechender Darstellung.

The drawing shows:

• FIG. 1 shows a schematic view of a folder superstructure according to the invention, set for magazine production, seen from the front,
• Figure 2 is a schematic plan view of the folder superstructure of Figure 1 in the setting for funnel production and
• Figure 3 shows a variant with swivel wing in Figure 2 corresponding representation.

The basic structure and the mode of operation of a web-fed rotary printing press and of a folder arranged downstream of it are known per se. The folding apparatus 1 on which FIG. 1 is based is arranged transversely to the longitudinal direction of the upstream printing press, which is only indicated by its side walls 2, 3, i.e. the direction of delivery of the folder 1 extends transversely to the direction of transport of the paper web in the area of the printing press. The folder 1 has an inlet 5 provided with pull rollers 4, to which a strand package 6 is fed. The drawing rollers 4, like the other rollers and cylinders of the folder 1, run in the transport direction of the printing press, that is to say at right angles to the cylinders and rolls of the printing press. The strand package 6 consists of a plurality of strands 6b, lying one on top of the other, into which the paper web 6a printed in the printing press is separated by longitudinal cuts. Magazine production is simply wide, loosely stacked poles. Funnel production is a double-width strand with a longitudinal funnel fold.

The folder 1 is inserted under a superstructure 7, which is provided with guide elements for the individual strands. The folder 1 is arranged so that its inlet 5 is laterally offset from the central longitudinal plane of the printing press. The superstructure 7 has, in the region of the outlet of the paper web from the printing press, the first turning bars 8 which are offset in height and laterally from one another and which deflect the strands passed over them by 90 ° as well as a mutually covering strand guide. In the illustrated embodiment, nine first turning bars 8 are provided, i.e. the paper web can be separated into nine strands. The first turning bars 8 are, as can best be seen from FIG. 2, designed as overhung rapid turning bars which are adjustable transversely to the running direction of the incoming paper web. For this purpose, the first turning bars 8 are assigned cross members 9 attached to the side walls 2, 3 of the printing press or corresponding extensions of these side walls, on each of which a carriage 10 provided with a first turning bar is slidably received.

For funnel production, five second turning bars 11 are also provided, which are laterally offset from the top five first turning bars 8, that is to say transversely to the running direction of the paper web running out of the printing press. The dimension of this lateral displacement is chosen so that the second turning bars 11 are outside the turning path of the first turning bars 8, ie at least laterally outside half the working area of the press. In the illustrated embodiment, the offset is chosen so that the second turning bars 11 are already located laterally outside the plane of the adjacent side wall 3. With the aid of the second turning bars 11, a further 90 ° deflection of the supplied paper strands, indicated by dashed lines in FIG. 2, can be achieved, so that the paper strands running off the second turning bars 11 again run parallel to the paper web of the printing press, only offset laterally thereto. The second turning bars 11 can, as can also be seen in FIG. 2, be designed as overhung rapid turning bars. In contrast to the laterally adjustable first turning bars 8 arranged at the outlet of the paper web from the printing press, the second turning bars 11 are not laterally adjustable, but are fixed against each other. In the embodiment according to FIGS. 1 and 2, a fixed, ie stationary, arrangement above the folder inlet 5 is provided. To accommodate the second turning bars 11, which are arranged here in a fixed manner, an end wall 12 extending transversely to the machine side walls 2, 3 is provided. This can simply be attached at right angles in the region of the rear end of the side walls 2, 3 to one of these side walls, here to the side wall 3.

In the direction of run of the strands next to each first turning bar 8, a driven pulling roller 13 and a register roller 15, which can be moved back and forth according to arrow 14, are provided. These pulling and registering rollers 13, 15 are thus located in FIG. 1, 2 in the area between the first turning bars 8 and the stationary, second turning bars 11 offset laterally against them. The pulling and registering rollers 13, 15 can also, like Figure 2 shows further to act on overhung paper guide members. The pull rollers 13 can be mounted on the end wall 12 just like the second turning bars 11. The adjustable register rollers 15 are received on guides 16 aligned with the end wall 12 and also fastened to the machine side wall 3.

In magazine production, the strands deflected by the first turning bars 8 and indicated by solid lines in FIG. 2 are fed to the inlet 5 of the folder 1 without a longitudinal fold. Here, above the inlet 5, mutually offset deflection rollers 17 are used, each of which runs such a strand. The deflection rollers 17 are aligned parallel to the pull rollers 13 and register rollers 15, over which the strands folded over by the first turning bars 8 also run. To save height, two rows of deflection rollers 17 flanking the center plane of the folder inlet are provided, which are approached from the right or left. The deflecting rollers 17 facing the pulling rollers 13 are acted upon via the four lower pulling rollers 13 or the register rollers 15 arranged after them. The deflecting roller 17 of the opposite row is acted upon by the five upper pulling rollers 13 or registering rollers 15, and in order to guide the relevant strands over the folder inlet instead of the second turning bars 11 to the deflecting rollers 17 or the pulling and registering rollers 13, 15, parallel deflecting rollers 18 Use.

In the embodiment according to FIG. 1, 2 with stationary second turning bars 11, the strands running off the five upper first turning bars 8 or the rollers 13 or register rollers 15 adjacent to them are passed laterally beyond the indicated second turning bars 11, then bypassing them directed downwards and then inwards again to the deflection rollers 17. For this purpose, corresponding deflection rollers 18, likewise stationary, are provided in the region of the side of the second turning bars 11 facing away from the pull rollers 13. To accomplish the necessary parallel applications, two such deflecting rollers 18 arranged one above the other are required per strand. In the embodiment according to FIG. 2, these are also mounted on the wall 12 on the fly.

In the case of former production, the deflecting rollers 17 provided above the folder inlet 5 are replaced by one or more former 19. In the exemplary embodiment shown, two folding formers 19 are provided, as indicated in FIG. In order to facilitate the changeover from magazine production to hopper production, a cassette 20 is provided above the folder inlet 5, which contains the folding former 19 and the deflection rollers 17 which are required as an alternative and which can be displaced along a longitudinal guide 21 provided in the superstructure 7 in such a way that in a In the first working position, the former 19 and in a second working position, the deflecting rollers 17 above the folder inlet 5 are in position. The longitudinal guide 21 assigned to the cassette 20 runs, as can be seen from FIG. 1, perpendicular to the plane of the drawing, i.e. parallel to the longitudinal direction of the printing press and the axial direction of the rollers and cylinders of the folding apparatus 1. The end wall 12 is, as can further be seen in FIG. 2, provided with a window 25 through which the displaceable cassette 20 can reach.

The strands fed to the folding direction 19 run parallel to the longitudinal direction of the printing press. The strands which are deflected by 90 ° by means of the first turning bars 8 are accordingly guided over the second turning bars 11 to accomplish a further 90 ° diversion and then, as can best be seen from FIG. 2, offset relative to the second turning bars 11 in the longitudinal direction of the printing press , Deflection rollers 22 arranged perpendicular to the tension rollers 13 or register rollers 15 are fed to the formers 19. These deflecting rollers 22 are also overhung here. To record the deflecting rollers 22, which are perpendicular to the pull rollers 13, is provided with a side wall 23 of the superstructure 7 which runs parallel to the machine side walls 2, 3 and abuts the end wall 12 perpendicularly. This side wall 23 lies in FIG. 2 within the deflection rollers 18 provided for magazine production and is accordingly provided with a passage window 24 for the strands leading to the deflection rollers 18 past the stationary, second turning bars 11 during magazine production.

The arrangement according to FIG. 3 does not differ in terms of its basic structure and mode of operation from the embodiment described above with stationary second turning bars and alternatively deflecting rollers for magazine production which can be acted upon. The following description accordingly relates only to the existing structural deviations, the same reference numerals being used for the same parts.

In order not to have to pass the second turning bars 11 with the paper strands during magazine production, i.e. In order to facilitate web insertion in magazine production, in the embodiment according to FIG. 3 the second turning bars 11 and an equal number of deflecting rollers 18 which can be acted upon in magazine production as an alternative to the second turning bars 11 are accommodated on a pivoting wing 26 which is pivotably mounted about a standing axis 27 . The second turning bars 11 and the deflection rollers 18 for magazine production are provided on opposite sides of the pivoting wing 26 and can accordingly be arranged at approximately the same height. To switch from magazine production to funnel production and vice versa, the swivel wing 26 is simply pivoted through 180 °, the second turning bars 11, as shown in FIG. 3, during funnel production, and the deflecting rollers 18, as indicated by broken lines in FIG. 3, in magazine production located above the folder inlet. In the two working positions, the swivel wing 26 can be locked by means of a lock 28. The guide element which is not required in each case, the deflection rollers 18 in the illustration according to FIG. 3, protrude rearward from the swivel wing 26 and is accordingly located outside the region of the strand course.

In the exemplary embodiment shown, the swivel wing 26 is designed as a plate-shaped support which is provided with the upper and lower bearing journals 29 and contains the swivel axis 27 and is mounted laterally next to the region of the strand profile. In the illustrated embodiment, the swivel wing 26 is arranged approximately flush with the end wall 12. This can be provided with a window 30 receiving the swivel wing 26. In order to achieve a sufficient degree of freedom of pivoting of the pivoting wing 26, the third side wall 23 is also provided with a window 24a through which the pivoting wing 26 can pivot.

The deflecting rollers 18 received on the swivel wing 26 are overhung. Likewise, the second turning bars 11 can be overhung. In the illustrated embodiment, the second turning bars 11 are supported on both sides. For this purpose, the swivel wing 26 is angular in cross section. For this purpose, a wall 32 projecting at a right angle is attached to the plate-shaped carrier 31 containing the journal 29 in such a way that an angular configuration which is open towards the second turning bars 11 results.

In the working position for magazine production, the deflecting rollers 18, as indicated by dashed lines in FIG. 3, are located directly above the folder inlet. The strands running over these deflecting rollers 181 are accordingly not passed over the folder inlet and accordingly do not have to be guided inwards again before entering the folder. This accordingly reduces the number of deflection rollers 18 required to the number of strands, i.e. the lower deflection rollers 18 still required in the embodiment according to FIG. 1 are not required here. The number of deflecting rollers 17 required directly above the folder inlet is also reduced, since a separate deflecting roller 17 is not required here for each strand. The overall result is a particularly simple and compact structure with a high degree of user-friendliness, i.e. particularly easy web entry.

Claims (10)

1. An overhead frame for a folder device arranged transversely on the output side of a roll-feed rotary printing press comprising a set of first angle bars (8), which are able to be adjusted in the printing press transversely in relation to the direction of movement of the paper web, and which at least in the case of magazine production bend the ribbons of web supplied to the intake of the folder device, a further set of second angle bars (11) which are offset in relation to the first angle bars (8) and which in the case of former production deflect the web ribbons supplied to the at least one former, draw rolls (13) provided for the ribbons of a web, register rolls (15) and bend rolls (17, 18 and 22), characterized in that the second angle bars (11) and bend rolls (18), which are able to be supplied for magazine production alternatively to the second angle bars (11) and are parallel to the intake (5) of the folder device, are offset in relation to the first angle bars (8), which are supplied in the case of former and magazine production, in the same direction as the folder device intake (5), which is offset in the machine in relation to the first angle bars (8) transversely to the direction of movement of the paper web (6a), in that in the part between the first angle bars (8) and the second angle bars (11) and, respectively, the bend rolls (18) which are able to be alternatively supplied for magazine production, the draw and register rolls (13 and 15) are provided which also run parallel to the intake (5) of the folder device and in that bend rolls (22) are provided which are associated with the second angle bars (11), are offset in relation to the same in the longitudinal direction of the printing press and extend transversely to the intake (5) of the folder device for former production.

2. The overhead frame as claimed in claim 1, characterized in that a side frame (23) is provided which is offset parallel to the side frames (1 and 2) of the printing press for receiving the bend rolls (22) of former production and in that an end frame (12) is provided which extends transversely in relation to the side frames (1 and 2) of the printing press and projects out to one side beyond the printing press, in order to receive the draw and register rolls (13 and 15), of the second angle bars (11) and the bend rolls (18) which are not able to be offset in relation to each other, for magazine production.

3. The overhead frame as claimed in any one of the preceding claims, characterized in that the second angle bars (11) which are generally arranged over the intake (5) of the folder device stationarily and the bend rolls (18) which are also arranged stationarily, are laterally offset in relation to each other for magazine production, and preferably arranged at different sides of the side frame (23) provided with an access window (24), and preferably the second angle bars (11) are arranged within the third side wall (23) and the bend rolls (18) for magazine production are arranged outside the third side frame (23).

4. The overhead frame as claimed in any one of the preceding claims 1 through 2, characterized in that the second angle bars (11) and the bend rolls (18) for magazine production are received on a pivot wing (26), which is able to be pivoted about a preferably upright axis (27), are preferably mounted opposite to each other and in the working position is able to be locked by a locking means (28).

5. The overhead frame as claimed in claim 4, characterized in that the pivot wing (26) is mounted to the side adjacent to the part in which the ribbons run and preferably fits into a window (30) in an associated window (24a) in the third side frame (23).

6. The overhead frame as claimed in any one of the preceding claims 4 and 5, characterized in that the pivoting wing (26) has a configuration which is open towards second angle bars (11), which are preferably supported at both ends, and is angular.

7. The overhead frame as claimed in any one of the preceding claims, characterized in that the paper guiding member (5) at least in the form of first angle bars (8), and more particularly all angle bars (8 and 11), the draw rolls (13), the register rolls (15) and the bend rolls (18 and, respectively, 22, and, respectively, 17) are cantilver-mounted.

8. The overhead frame as claimed in any one of the preceding claims, characterized in that in the case of magazine production bend rolls (17) are provided which are able to be placed in position over the folder device intake and underneath the part with the second angle bars (11) and are parallel to the folder device intake (5) and furthermore partly via adjacent draw rolls (13) and partly via the bend rolls (18) which are offset in relation to draw rolls, are able to be supplied for magazine production.

9. The overhead frame as claimed in claim 8, characterized in that in the case of stationarily arranged bend rolls (18), which are arranged offset in relation to the second angle bars (11) which second bars are arranged over the folder device intake (5), for magazine production, under such rolls (18) further bend rolls (18) are provided underneath the same and parallel thereto so as to be offset parallel in relation to bend rolls (17) which are in alignment with the folder device intake (5).

10. The overhead frame as claimed in any one of the preceding claims 8 and 9, characterized in that the bend rolls (17, which are in alignment with the folder device intake (5) and the former or formers (19) which is or are able to be placed over the folder device intake (5) as an alternative thereto, is or are mounted on a carrier (20) which is preferably able to be slid in the longitudinal direction of the printing press.

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