EP1728630B1 - Weg guiding device of a newspaper printing machine - Google Patents

Description

The invention relates to a web guiding element of a newspaper printing press according to the preamble of claim 1.

Web guide elements serve to guide the paper webs to be printed from the reel changer area, the so-called roller cellar, via a paper chute into the printing unit area. When setting up or maintenance of the newspaper printing press, the web guide elements are usually mounted by hand. In this case, first holding devices are attached to the underside of the ceiling construction, which separates the reel changer area from the printing unit area. After mounting the holding elements, the individual guide rollers are attached to the holding elements.

Since space is limited in the role change area, the use of auxiliary devices, such as cranes or hoists, in the assembly of the guide rollers is not possible. In the DE 100 35 000 A1 For example, such a guide roller is described, which is rotatably mounted in a frame with respect to its longitudinal axis. Along with the relatively high weight of the guide rollers, which may well be in the range of up to about 80 kilograms, depending on the size of the printing machine, the assembly of the guide rollers can only be accomplished by several auxiliary persons.

Furthermore, the guide rollers must be aligned in the holding devices, so that a good printing result can be achieved by a correct guidance of the paper web during the later printing process.

On this basis, the present invention is based on the problem to reduce the assembly work for web guide elements and at the same time to reduce the adjustment effort for the guide rollers.

This problem is solved by a web guiding element of a newspaper printing machine according to claim 1. According to the invention, the web guiding element has at least one guide roller which is preassembled in a frame or in a housing. This assembly is inserted as a whole unit in the paper chute and fastened with holding devices on the web guide wall.

The execution of the guide roller with frame or housing as an assembly allows the introduction of the web guide element from the printing unit area down into the reel changer area, thereby the use of lifting equipment, such as overhead cranes, is possible. Due to the preassembled structure also eliminates the previous assembly of the guide rollers on the previous fixtures

By attaching the assembly to the web guide wall, which is aligned within the arrangement of the newspaper printing press in the three coordinate directions x, y, and z, the overall alignment effort of the guide rollers is reduced or even avoided. If the frame or the housing is manufactured with low manufacturing tolerances, further guide roll orientation is usually unnecessary since the guide roll is already aligned by the attachment to the web guide wall.

The length dimension and the width dimension of the assembly may be less than or equal to the length dimension and the width dimension of the paper well, thereby facilitating the insertion of the assembly into the paper well.

According to an advantageous development of the invention, the height dimension of the module, that is from the printing unit area in the direction of the reel changer area, is preferably greater than or equal to the paper chute height. Depending on the height of the assembly, the distance of the guide rollers can be adjusted from the bottom of the ceiling construction and thus the angle of attack of the paper web can be varied. If the angle of attack of the paper web is perpendicular or nearly perpendicular to the ceiling construction, it is also conceivable to carry out the height dimension of the smaller than the paper chute height.

It is advantageous if at least one sound-insulating element is arranged for sound insulation between the printing unit area and the reel changer area. This sound insulation between reel changer area and printing unit area is partly country-specific prescribed. The sound-absorbing element can then be mounted on the assembly of the web guide element, whereby the hitherto rather cumbersome mounting of the sound-absorbing element in the paper chute area can be omitted.

Furthermore, it is favorable to use the sound-absorbing element as one or more frame walls or housing walls of the assembly. In this case, the sound-absorbing element may be formed as a holding element of the at least one guide roller and at least absorb parts of the weight of the at least one guide roller. In a particular embodiment of the invention, the frame or the housing is formed exclusively of sound insulation elements.

In order to enable a special custom-fit and simple attachment of the frame or the housing to the web guide wall, it is proposed to carry out the holding devices as pin elements, preferably dowel pins, and / or bores which are connectable to complementary bores and / or pin elements on or in the web guide wall , The frame or the housing, in addition to the pin connections a screw or have a similar positive or non-positive connection between the frame and housing and web guide wall.

A further advantageous embodiment of the web guide element provides to arrange at least one further holding device on the frame or on the housing of the web guide element and on the underside of the ceiling construction in the reel changer area. By this additional attachment of the frame or the housing vibration of the frame or the housing is avoided, or a transmission of vibrations from the printing unit area in the reel changer area or vice versa is reduced. As a holding device, for example, is an angle or a U-shaped rail, with one leg is attached to the frame or on the housing and the other leg is attached to the paper chute or on the ceiling structure.

It is also advantageous if adjusting elements are arranged on the frame or on the housing, with which the orientation of the guide roller is variable. Basically, the correct position of the guide rollers is already made by the attachment of the frame or the housing to the aligned web guide wall. With the adjusting elements, however, a fine adjustment of the guide roller can be made to thereby compensate for tolerances of the frame or the housing.

Depending on the embodiment of the web guide element, two or more guide rollers may be arranged, wherein the axes of the guide rollers may be offset from each other or arranged in a line.

Fig. 1:

eine Schnittansicht durch den Bereich des Papierschachtes zwischen Druckwerken und Rollenkeller mit bekannten Bahnführungselement und Schallschutzelementen;

Fig. 2:

eine Schnittansicht durch den Papierschacht und das erfindungsgemäße Bahnführungselement;

Fig. 3:

weitere Schnittansicht des Bahnführungselementes aus Figur 2;

Fig. 3a:

Detailansicht des eingekreisten Bereiches aus Figur 3.

Preferred embodiments of the invention will become apparent from the dependent claims and the description below. Embodiments of the invention are, without being limited thereto, explained in more detail with reference to the drawings. Showing:

Fig. 1:

a sectional view through the area of the paper chute between printing units and roller cell with known web guide element and soundproofing elements;

Fig. 2:

a sectional view through the paper chute and the web guide element according to the invention;

3:

further sectional view of the web guide element FIG. 2 ;

Fig. 3a:

Detail view of the circled area FIG. 3 ,

Hereinafter, the present invention will be described with reference to FIGS Figures 1 to 3 and 3a described in more detail.

The Fig. 1 shows a sectional view through the area of the paper chute 4 of a newspaper printing press. 4.3 designates the paper chute height. In the upper part of FIG. 1 is the printing unit area 1, in which the printing units of the newspaper printing press stand. Separated by a ceiling construction 3, located in the lower part of FIG. 1 the reel changer area 2, in which the paper 8 to be printed is mounted on reelstands. In order to achieve a sound insulation between the printing unit area 1 and the reel changer area 2, 4 sound insulation elements 5 are mounted in the paper chute, which are mounted here on the wall of the paper chute.

With the web guide element, one or more paper webs 8 are to be conveyed from the reel changer area 2 via the paper chute 4 into the printing unit area 1 to the printing units. The web guide element consists in this embodiment of a holding device 7, to which two guide rollers 6 are attached here. When building the newspaper printing machine, the holding device 7 is first attached to the underside of the ceiling structure 3, then the guide rollers 6 mounted on the holding device 7 and aligned. Depending on the size of the newspaper printing machine, the guide rollers 6 may have a weight of about 80 kilograms, so when installing the guide rollers 6 more people are necessary. The arrow with reference numeral 13 indicates the installation direction of the guide rollers 6 during assembly of the newspaper printing press. The aim of the invention is to reduce the assembly of the web guide elements and at the same time to reduce the adjustment effort for the guide rollers, wherein in the Figures 2 and 3 possible embodiments of a web guiding element are shown.

The Fig. 2 shows a sectional view through the paper chute 4 and through the web guide element according to the invention. With 4.3 is the paper chute height and with 10.3 is the height of the assembly designated. The web guide element is designed here as a preassembled module 10, which is designed in this embodiment as a housing with four walls 10.4 and 10.5. The width 10.1 and the length of the assembly 10 is adapted to the paper chute width 4.1 and the paper chute length. The assembly 10, to which two guide rollers are fastened to the side walls 10.4 in the lower region, is preferably inserted from the printing unit area 1 into the reel changer area 2 in the direction of arrow 14. This makes it possible to use in the assembly of the web guide element of a ceiling crane in the printing unit area and thus reduce the amount of people involved in the installation. For example, the assembly 10 is secured to the web guide wall 11 with pin members 12. Another advantage of the new web guide element proves to be the direct attachment of the sound insulation elements 5 on the front / rear wall 10.5 of the housing assembly 10. This eliminates the cumbersome mounting of the sound insulation elements 5 in the paper tray. 4

The Fig. 3 shows a further sectional view of the web guide element FIG. 2 , wherein the cutting axis passes through the guide axes 6 and along the paper chute length 4.2. With 10.3 is the height and with 10.2 the length of the assembly is designated. In the upper part of the assembly, the attachment 12 can be seen on the web guide wall 11 on the left and on the right.

The FIG. 3a shows an enlarged view of the in FIG. 3 circled area. Herein, the attachment 12 of the assembly or the side wall of the assembly 10.4 is shown with a dowel pin 15 on the web guide wall 11.

The web guide element according to the invention can thus be introduced from the printing unit area through the paper chute into the reel changer area, ie in the direction of the acting gravity. An introduction in the opposite direction is also possible. Since the space in the printing unit area is not as tight as in the reel changer area, the use of auxiliary devices is now possible. As a result, the amount of people involved in the assembly and the manual work of the heavy web guide elements can be reduced.

By attaching the web guide elements to the already aligned web guide walls of the effort to align the guide rollers can be minimized or avoided.

LIST OF REFERENCE NUMBERS

1

Printing area

2

Reelstands area

3

ceiling construction

4

paper tray

4.1

Paper tray width

4.2

Paper tray length

4.3

Paper tray height

5

Sound Absorber

6

guide roll

7

holder

8th

paper web

9

Frame / housing

10

module

10.1

Width of the assembly

10.2

Length of the assembly

10.3

Height of the assembly

10.4

Side wall

10.5

Front / rear wall

11

Web guide wall

12

Attachment to the web guide wall

13

Installation direction guide roller

14

Installation direction of assembly

15

dowel

Claims (11)

1. A web-guiding element of a newspaper-printing machine, consisting at least of one leading roller (6) that guides at least one paper web (8) from the reel-changing area (2) by way of at least one paper shaft (4) in a cover construction (3) and at least one web-guiding wall (11) into the print-unit area (1), characterised in that the at least one leading roller (6) is pre-assembled in a frame or in a housing (9) as an assembly group (10), and the assembly group (10) can be introduced or guided through into the paper shaft (4) and is secured with holding devices (12) on the web-guiding wall (11).
2. A web-guiding element according to claim 1, characterised in that the length dimension (10.2) and the width dimension (10.1) of the assembly group (10) are smaller than or equal to the length dimension (4.2) and the width dimension (4.1) of the paper shaft (4).
3. A web-guiding element according to one of claims 1 and 2, characterised in that the height dimension (10.3) of the assembly group (10) is preferably greater than or equal to the paper-shaft height (4.3).
4. A web-guiding element according to one or more of claims 1 to 3, characterised in that at least one sound-damping element (5) is arranged for sound-damping between the print-unit area (1) and the reel-changing area (2), and the sound-damping element (5) is arranged on the assembly group (10) of the web-guiding element.
5. A web-guiding element according to one or more of claims 1 to 4, characterised in that the at least one sound-damping element (5) forms at least one frame wall or housing wall of the assembly group (10).
6. A web-guiding element according to one or more of claims 1 to 5, characterised in that the at least one sound-damping element (5) is formed as a holding element of the at least one leading roller (6) and takes up at least parts of the weight of the at least one leading roller (6).
7. A web-guiding element according to one or more of claims 1 to 6, characterised in that the holding devices (12) of the assembly group (10) are realized as pin elements, preferably fitting pins, and/or bores, that can be connected with complementary bores and/or pin elements of the web-guiding wall (11).
8. A web-guiding element according to one or more of claims 1 to 7, characterised in that at least one further holding device (7) is arranged on the frame or housing (9) of the assembly group (10) and on the underside of the cover construction (3) in the reel-changing area (2).
9. A web-guiding element according to claim 8, characterised in that the further holding device (7) is realized as a fixing angle or a U-shaped rail.
10. A web-guiding element according to one or more of claims 1 to 9, characterised in that arranged on the frame or on the housing (10) there are adjusting elements with which the alignment of the leading roller (6) can be changed.
11. A web-guiding element according to one or more of claims 1 to 10, characterised in that two or more leading rollers (6) are provided, with the axes of the leading rollers (6) being arranged to be offset with respect to each other or in a line.

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