EP1415944B1 - Apparatus for the adjustment of pressing rollers and/or cutting blades in folding machines - Google Patents

Description

The invention relates to a device for adjusting pressure rollers or cutting blades on folding structures or turning structures and web guiding elements according to claim 1.

In printing machines for variable web widths, either the former is shifted, or the printing material are cut before the former into two partial webs and then each directed to the center of the fixed former through turning devices, such as turning bars. In both cases, the cutting blade and / or the pressure rollers, which are employed on non-printed areas of the printing substrate, each to be adjusted to the resulting from the width of the printing material new format. For example, in a double hopper arrangement which is very frequently implemented in the folding structure, these are 16 pressure rollers and up to 3 cutting knives, which have to be adjusted to the various formats, with 8 pressure rollers on the front side and 8 pressure rollers on the back side of the printing material web attached to them.
The adjustment of these 16 pinch rollers and 3 cutting blades is done today by hand or by 19 adjusting devices, each with its own drive, ie you need to adjust, for example, 19 motors. This results in a high material and adjustment costs.

The following devices are known from the prior art.

The DE 66877 shows a folding device with two laterally mutually adjustable formers, each associated with a cooperating with a arranged on the funnel entrance cutting roller cutting roller, which is set to the funnel center. In the case of a lateral adjustment of the former, it must also be possible to adjust the cutting rollers laterally relative to the associated cutting roller. An adjustment is not apparent. The adjustment of the cutting rollers is obviously done manually here.

The US Pat. No. 5,328,437 shows a folding device with two laterally adjustable formers. In the area of the funnel nose of each former 11, 12 these flanking folding rollers 26, 27 are provided. These must be adjusted with the assigned funnel. To adjust the former, a threaded spindle 36 is provided. The respective folding rollers associated folding rollers are accommodated on a carriage 28 and 29 respectively. The two folding hoppers 11, 12 associated carriage 28, 29 are adjustable by means of an associated threaded spindle 35. The threaded spindles 35, 36 are drivingly connected to each other and simultaneously driven. For this purpose, a handwheel 41 is provided. Alternatively, a synchronous motor may be provided.

The threaded spindles 35, 36 contain only the formers or the car associated threaded sections. Cylinder sections which are not to be adjusted and which are accessed by the threaded spindles are not provided.

The EP-A 0 457 304 shows a device for the production of bags, in which a web is folded so as to give a tubular shape. For this purpose, cooperating with guides 17 forming rollers 12 are provided which each generate a fold line. The guides 17 are laterally adjustable by means of an associated, driven by a motor threaded spindle 27. The shaping rollers 12 are laterally adjustable by means of an associated, driven by a motor threaded spindle 11. Again, all the threaded spindles 11, 27 associated with organs in the event of actuation of the threaded spindles laterally adjusted. Stationary, accessed by the threaded spindles organs are not provided. Again, the threaded spindles therefore contain only threaded sections. Threadless sections are not needed here and are therefore not provided.

It is an object of the invention to provide a method for adjusting pressure rollers and / or cutting blade, which can be realized with a small number of drives.

The object is achieved with the features of independent claim 1. Other features and advantages will become apparent from the dependent claims in conjunction with the description.

The device for adjusting the pressure rollers and / or cutting blade in Falzaufbauten, especially at the Falztrichterebene, consists of opposite the pressure rollers and / or cutting blade arranged driven tension rollers or over the web width extending driven tension rollers and consists of at least two threaded spindles, by means of which the pressure rollers and / or the cutting blades are axially displaced, wherein during the axial adjustment a part of the pressure rollers and / or cutting blades stops, a part of the pressure rollers and / or cutting blades are adjusted a first adjustment and / or a part of the pressure rollers and / or cutting blade a second adjustment be adjusted.

The advantage is that an adjustment of all pinch rollers and / or cutting blades can be done in one step, i. it is a simultaneous or immediately after each other feasible adjustment of all pinch rollers and / or cutting knife possible.

For this purpose, it is necessary to arrange all pinch rollers and / or cutting blade axially displaceable and to fix the axial position by a threaded bushing in which the respective threaded spindle can rotate, or to adjust the axial position by turning this threaded spindle. This I feasible if the common threaded spindle, depending on the position of the pressure roller or the position of the cutting blade has a different pitch and / or a different pitch direction at certain areas.

The position of the pinch roller and / or the position of the cutting blade depends on the web width and the configuration principle of the printing press. Either the formers are designed for the maximum web width and the narrower webs are each passed to the center of the fixed formers by means of turning devices, or the formers are for the minimum Web width and are pushed apart at a larger web width. This results in the in the Fig. 4 and Fig. 6 shown, different shape of the threaded spindle. The shape of the threaded spindle is thus dependent on the configuration principle of the printing system.

To reduce set-up time, all pinch rollers and / or cutting knives of a pulling group can be adjusted in front of the former simultaneously or directly behind one another and monitored in their position with such a device, with only one adjusting motor and with only one position monitoring device. In addition, this allows a format-independent design of this train group.

In detail, the invention will be described with reference to an embodiment.

Fig. 1

eine erfindungsgemäße Vorrichtung zum Verstellen von Andruckrollen und/oder Schneidmesser vor einem Falztrichter,

Fig. 2

Seitenansicht der Vorrichtung gemäß Fig. 1,

Fig. 3

Falztrichteranordnung einer Druckanlage nach Konfigurationsprinzip I,

Fig. 4

Ausgestaltung der Gewindespindel für Konfigurationsprinzip I,

Fig. 5

Falztrichteranordnung einer Druckanlage nach Konfigurationsprinzip II,

Fig. 6

Ausgestaltung der Gewindespindel für Konfigurationsprinzip II.

The invention will be explained in more detail below with reference to the drawings. In the accompanying figures shows schematically, the

Fig. 1

a device according to the invention for adjusting pressure rollers and / or cutting blades in front of a former,

Fig. 2

Side view of the device according to Fig. 1 .

Fig. 3

Forming hopper arrangement of a printing system according to configuration principle I,

Fig. 4

Configuration of the threaded spindle for configuration principle I,

Fig. 5

Forming hopper arrangement of a printing system according to configuration principle II,

Fig. 6

Configuration of the threaded spindle for configuration principle II.

In Fig. 1 is a folding structure 1 with double hopper, ie a lying in a plane adjacent the first former 2 and a second former 3, shown.

Above the two funnels 2, 3 between the side walls 28, 29 mounted sixteen pinch rollers 4 and three cutting blades 5 are arranged, the pinch rollers 4 and 5 are cut by means not shown, lever mechanisms or directly to a printing material 9 and off. Opposite the pinch rollers 4 and the cutting blades 5 driven over the web width extending tension rollers 6, 8 and a knife roller 7 are arranged (see Fig. 2 ). Alternatively, instead of the draw rolls 6, 8, driven pull rolls positioned opposite the pinch rolls 4 and cutting knives 5 may also be used. Between these, the printing material web 9 is passed, wherein in each case on the front side 10 and on the back 11 of the printing substrate 9 eight pinch rollers 4 are adjustable.
Each of these eight pressure rollers 4, which are adjustable on the front 10 and the back 11, are mounted axially displaceably by means of a threaded bushing 12 designed, for example, like a lever, on a guide element 13. The axial position of the pressure rollers 4 is fixed by the threaded bushing 12, in which a threaded spindle 14 can rotate. By rotating this threaded spindle 14, the axial position of the pressure rollers 4 can be adjusted. For the pressure rollers 4 each one side 10; 11 of the printing substrate 9, a threaded spindle 14 is provided, so that at least two threaded spindles are present.
In addition, the cutting blade 5 can be arranged axially displaceably by means of the threaded bushes 12 and adjustable by rotating the threaded spindle 14 in its axial position on the upper guide member 13.

Alternatively, not shown in detail, the cutting blade may also be arranged on a separate threaded spindle, so that the device for axially adjusting the pressure rollers and cutting blades with the above two threaded spindles for the pressure rollers comprises a total of three threaded spindles.

The bearing on the guide element 13 pinch rollers 4 and 5 cutting blade can be turned off, for example, to adjust their axial position of the printing substrate 9 and are employed again after the adjustment of its axial position to the printing substrate 9.
The threaded spindles 14 are preferably driven by a drive 23. The drive 23 drives the threaded spindles 14 either via a gear 24, a Belt drive 25 or a chain drive 26 on. On the drive 23, for example, one or more motors, a position monitoring device 27, for example, a rotary encoder, is arranged. The position monitoring device 27 can, not shown in detail, also on the gear 24, the belt drive 25 or the chain drive 26 are arranged.
Thus, it is possible with only one drive 23 and only one position monitoring device 27 to accomplish the adjustment of all pinch rollers 4 and / or cutting blade 5 and to monitor and / or determine the axial adjustment and / or axial position of all pinch rollers 4 and / or cutting blade 5 , As a drive 23 and stepper motors can be used, whereby the use of position monitoring devices 27 can be omitted.

The position of pinch roller 4 and / or the position of the cutting blade 5 depends on the web width of the printing substrate 9 and on the configuration principle of the printing press.
The threaded spindle 14 for adjusting the pressure rollers 4 and 5 cutting knives according to the configuration principle I, depending on the position of the pressure roller 4 and the position of the cutting blade 5 at certain areas A, B, C, D, E, F a different pitch and / or a different slope direction (see Fig. 4 ).
The threaded spindle 14 for adjusting the pressure rollers 4 and cutting blade 5 according to the configuration principle II, depending on the position of the pressure roller 4 and the position of the cutting blade 5 at certain areas G, H, I, K, L a different pitch and / or a different pitch direction (see Fig. 6 ).

In Fig. 3 schematically the configuration principle is shown. In configuration principle I, the formers 2, 3 are designed for a maximum web width B _max , wherein in a processing of narrower printing material 9 'this is cut before the, not shown, printing units by means of a cutting device 15 in two partial webs 16, 17 and then each the partial webs 16, 17 are guided to the center of the fixed former M _F2 , M _F3 by means of a, not shown, spreading device and turning devices 18.

The position of in Fig. 3 illustrated pinch rollers 4 _A to 4 _F and the position of, not shown for clarity, cutting blade must be set to the resulting narrower web width B _{min of} the printing substrate 9 'new format, ie the pressure rollers 4 _A to 4 _F and the cutting blade must be set to new non-printing areas.
In the configuration principle I, the pressure rollers 4 _A1 , 4 _A2 , 4 _B1 , 4 _B2 and, for clarity, not shown, cutting knife, which are arranged in position center former M _F2 , M _F3 , ie the range A, B of the threaded spindle 14th are assigned (see Fig. 4 ), in the processing of narrower printing material webs 9 'are not changed in their position, ie the threaded spindle 14 has at the areas A, B no thread on (P = 0).
Thus, the respective position of the pressure roller 4 _'A1, 4' _A2, 4 _'B1, 4' _B2 is compared with their respective positions _A1 4, _A2 4, 4 _{B1, B2} 4 unchanged.
The pressure rollers 4 _C , 4 _D , 4 _E , 4 _F , which are employed at respective web edges 19 ', 20', 21, 22 of the partial webs 16, 17 must always cover the same, but in different directions, travel X, ie the threaded spindle 14 is configured in the region C, D, E, F with a pitch that is the same in height but different in its direction P (see FIG Fig. 3 and Fig. 4 ).

In the specific embodiment, the threaded spindle 14 for adjusting the pressure roller 4 _C in its position 4 ' _C on the web edge 20, 20', which is pulled over the former 3, ie in the area C, with a right-common thread with the pitch P. = 1 configured (see Fig. 3 and Fig. 4 ).
The threaded spindle 14 is for adjusting the pinch roller 4 _D in its position 4 ' _D on the former 3 starting position center machine M _M , ie in the area D, designed with a left-common thread with the pitch P = 1 (see Fig. 3 and Fig. 4 ). The threaded spindle 14 for adjusting the pinch roller 4 _F in its position 4 ' _F at the web edge 19,19', which is pulled over the former 2, ie in the area F, is designed with a left-common thread with the pitch P = 1 (please refer Fig. 3 and Fig. 4 ).
The threaded spindle 14 is for adjusting the pressure roller 4 _E in its position 4 ' _E on the former 2 starting position center machine M _M , ie in the area E, designed with a right-common thread with the pitch P = 1 (see Fig. 3 and Fig. 4 ).

In Fig. 5 is shown schematically the configuration principle II. In configuration principle II, the former 2, 3 are designed for the minimum web width B _min and are at a larger web width to the position 2 '; 3 'pushed apart. The position of the pinch rollers 4 _G to 4 _L and the position of, not shown for clarity, cutting blade must be set to the result of the wider printing material 9 'new format, ie the pinch rollers 4 _G , 4 _H , 4 _I , 4 _K. , 4 _L and the cutting blades must be set to new non-printing areas. In this configuration principle, the pressure rollers 4 _G and the cutting blades, which are arranged in position center machine M _M , must not be changed in their position, ie the threaded spindle 14 has in the range G (see Fig. 6 ) no thread on (P = 0). Thus, the position of the pressure rollers 4 _'G relative to its position _4G remains unchanged.

The pressure rollers 4 _H , 4 _I and the cutting blades, which are arranged at the position center hopper M _F2 , M _F3 and the areas H, I of the threaded spindle 14 must be adjusted axially by the first adjustment X, wherein the pressure rollers 4 _K , 4 _L , which are employed at the respective web edges 19 ', 20' of the wider printing material web 9 ', always have to be adjusted axially by a second adjustment path 2X (see FIG Fig. 5 and Fig. 6 ).
The second adjustment path 2X here corresponds to twice the adjustment path X.

The threaded spindle 14 is in the range K, L for the pressure rollers 4 _K , 4 _L , which are employed at the respective web edges 19, 20, 19 ', 20', with a compared to the pitch P at the position center of the former M _F2 , M _F3 , ie in the range H and I, twice as high, but in the same direction extending pitch 2 P designed (see Fig. 5 and Fig. 6 ).

In the specific embodiment, the threaded spindle 14 for adjusting the pinch roller 4 _L in its position 4 ' _L at the web edge 20, 20', which is pulled over the former 3, ie in the area L, with a left-common thread with the pitch P. = 2 configured (see Fig. 5 and Fig. 6 ).

The threaded spindle 14 is for adjusting the pressure roller 4 _I in its position 4 ' _I at the center of the former M _F3 , ie in the area I, designed with a left-common thread with the pitch P = 1 (see Fig. 5 and Fig. 6 ).

The threaded spindle 14 is for adjusting the pressure roller 4 _K in its position 4 ' _K at the web edge 19, 19', which is pulled over the former 2, ie in the area K, designed with a right-common thread with the pitch P = 2 (please refer Fig. 5 and Fig. 6 ).
The threaded spindle 14 is for adjusting the pressure roller 4 _H in its position 4 ' _H at the center of the former M _F2 , ie in the area H, designed with a right-common thread with the pitch P = 1 (see Fig. 5 and Fig. 6 ).

Starting from the position of the center of the machine M _M , the threaded rod 14 can be constructed in mirror image or symmetrical manner both for the configuration principle I and for the configuration principle II (see FIG Fig. 4 and Fig. 6 ).

The device should be limited not only to the use of pinch rollers 4 and 5 cutting blades and their arrangement on the double hopper. With the device also Perforiereinrichtungen, trolleys or skip slitter can be continuously adjusted axially.
The device can also be used for adjusting pressure rollers 4 and / or cutting blades 5 in folder superstructures, turning superstructures and web guiding elements.
Also, each threaded spindle 14, not shown in detail, be designed with its own drive. Not shown in detail, the cutting blade 5 can be adjusted continuously by a separate common threaded spindle 14 axially.

The device may be configured such that a separate threaded spindle 14 is provided for each adjustment path X, or adjustment path 2X, or adjustment path 3X, wherein the threaded spindles 14 are driven via gearboxes with a defined ratio with respect to rotational speed and direction of rotation.

reference numeral

1

folding structure

2

Former SI

3

Forming former SII

4,4 '

pinch

5

cutting blade

6

pulling roller

7

knife roll

8th

pulling roller

9

printing material

10

front

11

back

12

Gewindbüchse

13

guide element

14

screw

15

cutter

16

part web

17

part web

18

turning device

19, 19 '

web edge

20, 20 '

web edge

21

web edge

22

web edge

23

drive

24

transmission

25

belt drive

26

chain drive

27

Position monitoring device

28

Sidewall SI

29

Side wall SII

A

Area A

B

Area B

C

Area C

D

Area D

e

Area E

F

Area F

G

Area G

H

Area H

I

Area I

K

Area K

L

Area L

M _F2

Middle former 2

M _F3

Middle former 3

M _M

Middle machine

B _max

Maximum web width

B _min

Minimum web width

X

First adjustment path

2 X

Second adjustment path

P

pitch

P = 0

No thread (P = 0)

P = 1

Thread with pitch P = 1

P = 2

Thread with the pitch P = 2

2 p

Thread with double high pitch

li

Left-handed thread

re

Right-handed thread

Claims (9)

1. A device for adjusting pressure rollers (4) or cutting knives (5) in folding superstructures (1) or turning superstructures a web leading elements for processing substrate webs (9, 9') with variable web width (B_min, B_max), which can be thrown on on one or on both sides (10, 11) of the substrate web (9, 9') and are arranged in front of the former (2, 3), wherein opposite the pressure rollers (4) or cutting knives (5) driven nips or nipping rollers and knife rollers (6, 7, 8) extending over the web width are arranged, by means of at least one or multiple threaded spindles (14) the pressure rollers (4) or the cutting knives (5) are axially adjustable simultaneously or directly one after the other, wherein during the axial adjusting a part of the pressure rollers (4) or cutting knives (5) remains stationary, a part of the pressure rollers (4) or cutting knives (5) are adjusted a first adjusting travel (X) and a part of the pressure rollers (4) or cutting knives (5) are adjusted a second adjusting travel (2X), characterized in that the threaded spindle (14) is divided into regions (A to F; G to L), each region (A to F; G to L) is assigned individual pressure rollers (4) or cutting knives (5) and the regions (A to F; G to L) are configured with pitches (P) of different pitch height and/or pitch directions, wherein the adjusting travel (X, 2X, 3X) of the individual pressure roller (4) or of the cutting knife (5) the pitch height and/or pitch direction is configured accordingly.
2. The device according to claim 1, characterized in that up to three threaded spindles are provided, wherein the pressure rollers (4) in each case are axially adjustable by means of one or two threaded spindles (14) and the cutting knives (5) are axially adjustable by means of one threaded spindle (14).
3. The device according to claim 1 or 2, characterized in that for each adjusting travel (X, 2X, 3X) a separate threaded spindle (14) is provided, wherein the threaded spindles (14) are driven via a gearbox with defined transmission ratio with regard to rotational speed and direction of rotation.
4. The device according to claim 3, characterized in that starting out from the position middle machine (M_M) the threaded rod (14) is constructed symmetrically or in mirror image in the direction of its ends.
5. The device according to any one of the preceding claims 1 to 4, characterized in that one or multiple threaded spindles (14) can be drive by at least one drive (23).
6. The device according to any one of the preceding claims 1 to 5, characterized in that the axial position of all nips (4) and/or of all cutting knives (5) can be checked and/or determined by at least one position monitoring device (27).
7. The device according to any one of the claims 5 or 6, characterized in that the drive (23) is a stepping motor.
8. The device according to any one of the preceding claims, characterized in that with a folding device having two stationary formers (2, 3) which are laterally offset against one another and adjusted to the greatest processable web width, in which each web running over a former is assigned at least one set of pressure rollers (4) with pressure rollers (4) assigned to the edges of the web and the middle region of the web, wherein the pressure rollers (4) assigned to the edges of the web are assigned same threaded sections (C, D, E, F) and the pressure rollers (4) assigned to the middle region of the web are assigned thread-free sections (A, B) of the respective assigned threaded spindle (14).
9. The device according to any one of the preceding claims 1 to 8, characterized in that in a folding device having two formers (2, 3) which can be adjusted laterally against one another, in which each web running over a former is assigned at least one set of pressure rollers (4) with pressure rollers assigned to the edges of the web and the middle region of the web, wherein the pressure rollers (4) assigned to the web edges facing one another of the two sets are assigned thread-free sections (G) and the remaining pressure rollers (4) are assigned sections (K, H, I, L) provided with a thread of the threaded spindle (14), and wherein the threaded sections (K, L) of the threaded spindle (14) assigned to the pressure rollers (4) which are assigned to the web edges facing away from one another have a pitch that is twice as large as that of the threaded sections (H, I) of the associated threaded spindle (14) assigned to the pressure rollers (4) assigned to the middle regions of the web.

Images