JPH09174805A - Regulator for printer cylinder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to regulate a printer cylinder in parallel with the axial interval at one side in an oblique state with respect to a cylinder cooperated with the printer cylinder. SOLUTION: Regulators 16 to 19 coupled to a position regulating driver 22 connected to the rear of an operating unit for operating commonly to both the eccentric bearings and fixed to a side frame are provided belonging to the one regulator 1 of a printer cylinder. The one bearing 1 is relatively rotatable with respect to the other bearing 1 by the regulators.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adjusting device for a cylinder in a printing device of a printing press, particularly for a blanket cylinder or a plate cylinder in a printing device or a varnishing device of a sheet offset printing machine, The cylinder is rotatably mounted on another cylinder by means of an eccentric bearing, which is arranged rotatably in the side frame of the printing device, one at each end, and an eccentricity at both ends. The present invention relates to a type in which an operating device that acts in common on a bearing is provided to rotate the bearings at both ends simultaneously.

[0002]

A blanket cylinder in a printing device of a sheet offset printing press is positioned relative to an impression cylinder and a plate cylinder cooperating with these blanket cylinders via eccentric bearings which are rotatable in a lateral frame. Adjustably supported. By rotating the eccentric bearing, the blanket cylinder can be pressed and separated from the impression cylinder that guides the sheet and the plate cylinder that cooperates with the blanket cylinder. In this case, a so-called two-stage switching mechanism cooperates with the eccentric bearing as an operating device, and in the first switching stage the blanket cylinder is separated from the impression cylinder, but it is still crimped to the plate cylinder. In the switching stage of, the blanket cylinder is separated from the impression cylinder and the plate cylinder.

Further, an adjusting mechanism, which belongs to the switching mechanism and adjusts the thickness of the sheet to be printed as another operating device, is connected to the rear side or in series, and both of the adjusting mechanisms are connected by this adjusting mechanism. It is known to rotate the eccentric bearings by the same angle so that the axis of the blanket cylinder is aligned parallel to the impression cylinder guiding the sheet. An adjusting mechanism, which belongs to each eccentric bearing and is fixedly supported by the side frame, is provided, and by adjusting the positions of both adjusting mechanisms at the same time, the cylinder is parallel to the cylinder with which it cooperates, and It is also known to adjust the position in a tilted state. Such adjusting mechanisms are used especially in the plate cylinders of offset printing machines. As a result, the plate cylinder can be pressed against the blanket cylinder so that uniform line printing is performed over the entire plate width.

However, the provision of one adjusting mechanism for each eccentric bearing of the position-adjustable barrel has the following drawbacks. That is, both adjustment mechanisms are used when aligning the cylinder parallel to its associated cylinder (eg the plate cylinder relative to the blanket cylinder or the plate cylinder in the varnishing device relative to the impression cylinder). Shall be adjusted simultaneously or sequentially to the same value. In this case, the following points can be cited as advantages. That is, the cylinder can be adjusted on one side (inclined) over a very wide range with respect to the cylinder with which it is associated. In a varnishing device which is connected to the rear of the printing device of a sheet offset printing press, a cylinder with a rubber blanket or a plate in the form of a relief works in cooperation with an impression cylinder. A corresponding adjustment due to the tolerance of the thickness of the printed sheet over the width of the plate, due to the large tolerance of the relief plates serving as plates, and due to the change in the compressibility of the printed sheet. It is necessary to obtain uniform printing results or varnishing results over the entire plate width. However, the cylinders, which are positionally adjustable in the above-mentioned manner by means of the adjusting mechanisms respectively associated with the eccentric bearings, are tilted by a predetermined value with respect to the axis of the cylinders with which they cooperate. Damage to the eccentric bearing can occur when the position is adjusted to the desired position, especially at high working speeds. The reason for this is that the eccentric bearing, which supports the barrel via its bearing pins, only allows a certain inclination of the bearing pin with respect to it. For this reason, in each adjusting mechanism, which is provided at each end of the cylinder and which adjusts the cylinder in parallel over a wide range with respect to the cylinder with which it cooperates, additional measures are taken to make There should be no significant difference between the adjustment values.

DE 91 04 151 describes a device for adjusting the axial distance between the blanket cylinder and the printing cylinder of a sheet offset printing machine, in which case the central control stand is the printing machine. It is adapted to act on the respective eccentric bearing pairs of the respective blanket cylinder via a sliding rod which can be moved along. In order to rotate the eccentric bearings of one blanket cylinder together, they are connected to each other via both eccentric bearing offset shafts. In this case, the connection of the sliding rod to both eccentric bearings is carried out by means of an intervening adjusting mechanism, whereby the eccentric bearing is adjustable with respect to the longitudinally movable sliding rod. is there. Further, in this case, one switching mechanism is provided for each blanket cylinder, and this switching mechanism is configured in the form of a toggle lever transmission mechanism. It can be crimped / separated in stages. By means of the central control stand and the sliding rod, the blanket cylinders in the individual printing devices can be adjusted together to one value so that a certain distance between the axes of the blanket cylinders is achieved (thickness of the printed sheet). Adjustment).

DE 40 13 075 C1 describes a blanket cylinder crimping / separating device in a printing device of a sheet offset printing machine. In this case, the two pneumatic cylinders act via the connecting member on the toggle lever transmission mechanism and the shift shaft connecting both eccentric bearings supporting the blanket cylinder to each other. Further, a printing sheet thickness adjusting mechanism is provided belonging to the toggle lever transmission mechanism, whereby the blanket cylinder can be adjusted with respect to the impression cylinder according to the thickness of the printing sheet. Both the print sheet thickness adjusting mechanism and the pneumatic cylinder act on the offset shaft, and this offset shaft rotates both eccentric bearings by the same angle. Therefore, depending on this crimping / separating device, the blanket cylinder is parallel to the impression cylinder. You can only adjust the position. In this case, the blanket cylinder is not pressed against the impression cylinder more strongly on one side.

[0007]

SUMMARY OF THE INVENTION The problem to be solved by the present invention is to eliminate the drawbacks of the prior art mentioned above and to provide a printing device cylinder to a cylinder cooperating with it, especially during operation of the printing press. The axis spacing can be adjusted in parallel and on one side (inclined). In particular, the axis of the cylinder, which is adjusted by the adjusting mechanism, should not be tilted too far with respect to the cylinder with which it is associated.

[0008]

In order to solve this problem, in the arrangement according to the invention, in an adjusting device of the type mentioned first, it belongs to one eccentric bearing and is connected to the rear of the operating device and to the side. An adjusting device connected to a fixed position adjusting drive is provided on the one-sided frame, and the one eccentric bearing can be rotated relative to the other eccentric bearing by the adjusting device.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a preferred embodiment of the present invention;

The adjusting device according to the present invention can be applied to a blanket cylinder and a plate cylinder of an offset printing machine, and also to a plate cylinder of a finishing device such as a varnishing device. In this case, the operating device acting on both eccentric bearings is a manual or motor-adjustable adjusting mechanism for adjusting the thickness of the printed sheet, a single-stage or multi-stage switching mechanism for crimping and separating the cylinder. , Or the adjustment mechanism and the switching mechanism connected in series with each other. In this case, it is important that an adjusting device is provided between the actuating device acting on both eccentric bearings and one eccentric bearing, by means of which one eccentric bearing is to the other eccentric bearing. It is rotated by a predetermined angle, and by this,
The axis of the printer cylinder is adjusted in a tilted manner with respect to the axis of the cylinder with which it cooperates. In this case, the adjustment range of the adjusting device between the operating device and one of the eccentric bearings is
The bearing pins of the shell are adapted to the maximum possible tilt angle inside the eccentric bearings that support them.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of the present invention will be specifically described below based on embodiments shown in the drawings.

In FIG. 4, the cylinder 14, whose position is adjusted with respect to the cylinder 15, is supported by eccentric bearings 1 which each receive a bearing pin 2. Therefore, by rotating both eccentric bearings 1 by the same angle or different angles, the axis of the barrel 14 is adjusted in parallel with the axis of the barrel 15 or in an inclined state. The bearings that receive the bearing pins of the cylinder 15 cooperating with the cylinder 14 are not shown. The bearings of both cylinders 14 and 15 are mounted in a side frame (not shown) of the printing or varnishing device.

FIG. 5 shows in principle the operating device which acts in common on both eccentric bearings 1 of the cylinder (14). In the illustrated embodiment, this operating device is a switching mechanism and a sheet thickness adjustment for printing. Made up of mechanisms. Even in this case, the bearing pins (2) of the body (14) (not shown) are rotatable in the side frame, and the eccentric bearings (1)
Supported by Both the eccentric bearings 1 of the body (14) are connected via one connecting member 3 respectively to the offset shaft 5
Is connected to the swivel end of a lever 4 attached to each end of the. The operation device portion shown in FIG. 5 is, for example, on the B side of the printing machine. The displacement shaft 5 extending from the A side to the B side between the side frames of the printing machine has a lever 6 in addition to the lever 4, and the pivotable end of the lever 6 is the piston of the working cylinder 8. It is connected to the rod 7. By supplying the pressure medium (pressure air / pressure oil) to one or the other working chamber of the work cylinder 8, the lever 6 attached to the B side of the shift shaft 5 is swung via the piston rod 7. By this turning motion, the shift shaft 5 is rotated, and both the eccentric bearings 1 are rotated via the connecting member 3 on the A side and the B side, respectively.

The switching mechanism shown in FIG. 5 thus comprises a working cylinder 8 and a piston rod 7 operated by a pressure medium. The fulcrum of the work cylinder 8 is the lever 9
The lever 9 is rotatable about an axis fixed to the side frame. Lever 9 is lever 1
The levers 9 and 10 are integrally connected to 0 and form a V-shaped two-arm lever. A spindle nut 11 is connected to the end of the lever 10. The spindle nut 11 is screwed onto a screw spindle 12, which can be operated by an adjusting drive 13. The adjusting drive 13 is in this case either remotely controlled by a motor or manually operated by an adjusting gauge. Via the adjusting drive 13, the eccentric bearings are respectively adjusted in relation to the thickness of the printed sheet on the A side and the B side, and the axes of the cylinder 14 and the cylinder 15 cooperate with each other as shown in the upper part of FIG. The distance from the axis of is adjusted in parallel. By supplying the pressure medium to one or the other working chamber of the working cylinder 8 and moving the piston rod 7 in and out, the eccentric bearings 1 on the A side and the B side are rotated by the same angle, and the bodies 14 and 15 are moved. Can be crimped and separated from each other. The working cylinder 8 can be constructed as a so-called two-stage working cylinder. In the illustrated embodiment, the arrangement shown in FIG. 5 is a switching mechanism and a print sheet thickness adjusting mechanism, and is connected to the end of the shift shaft 5 on the B side of the printing machine.

1 and 2 show the end of the offset shaft 5 on the side A, which is the opposite side of the printing press. In this case, the lever 1 acting on the eccentric bearing 1 via the connecting member 3 on the A side
6 is rotatably supported on the offset shaft 5. An entrainment body 17 is provided in association with a lever 16 which is capable of relative rotation on the shift shaft 5. The entrainment body 17 is configured in a lever shape and is attached to the displacement shaft 5 so as not to rotate relative thereto. Has been.

A worm gear 18 is rotatably supported in a lever-shaped entrainment body 17, and the axis line of the worm gear 18 is parallel to the offset shaft 5.
The worm gear 18 meshes with a worm 19, which is also supported in the driver 17 and is prevented from axial movement, which worm 19 has two swivel joints 20.
Via a telescope shaft 21 and can be rotated by a position adjusting drive 22 fixed to the side frame. In this case, the position adjusting drive device 22 can be manually operated by an adjusting gauge or can be configured to be remotely controllable by a motor.

The worm gear 18, which is inserted into the entrainment 17 and meshes with the worm 19, has a pin 23, which is arranged eccentrically with respect to the axis of the worm gear 18, on the side facing the lever 16. The pin is rotatably inserted into the hole of the slider 24. The slider 24 is the lever 16
It is movably inserted in the groove 25 formed in the. A lever 16 rotatably supported on the shift shaft 5
The inner slide 24 and groove 25 thus cooperate with each other in the form of a linear movement mechanism. By rotating the worm 19 in one or the other direction and rotating the worm gear 18 in one or the other direction by a predetermined angle, the lever 1
6 is swung with respect to the displacement shaft 5 via a pin 23 and a slider 24, and this swiveling motion is A via a connecting member 3.
It is transmitted to the side eccentric bearing 1. Therefore, FIGS.
The eccentric bearing 1 on the A side of the printing machine shown in FIG. 2 is rotatable by a predetermined angle with respect to the eccentric bearing on the B side (FIG. 5), whereby the cylinder 14 can be rotated as shown in the lower part of FIG. It is tilted with respect to the body 15 cooperating with 14. in this case,
The adjustment range of the position adjusting drive and thus the amount of rotation of the lever 16 on the offset shaft 5 with respect to the driver 17 is such that the barrel 14 is tilted relative to the barrel 15 by a predetermined maximum angle.

In FIGS. 1 and 2, the eccentric bearing 1 on the A side is a driving body 1 fixed to a lever 16 and a shift shaft 5.
7 in a crimped position and a spaced position. In this case, FIG. 1 shows the crimping position. The telescope shaft 21 is
The distance between the swivel joints 20 can be changed when the swivel motion is performed.

[0019]

By applying the present invention, the printing device cylinder which cooperates with another cylinder can be parallel to the other cylinder.
In addition, it is possible to adjust the tilted state on one side. In that case,
Both parallel and tilted adjustments of the cylinder axis can be performed during the operation of the printing press.

[Brief description of the drawings]

FIG. 1 is a diagram showing an adjusting mechanism according to the present invention in a crimping position.

FIG. 2 is a view showing the adjusting mechanism according to the present invention in a separated position.

FIG. 3 shows a lever pivotally supported on a push-off shaft and having a slider movable longitudinally in a groove.

FIG. 4 is a view showing a support device of the body and an adjusted state.

FIG. 5 is a view showing an adjusting mechanism and a switching mechanism connected to each other in the front-rear direction.

[Explanation of symbols]

1 eccentric bearing, 2 bearing pins, 3 connecting members,
4 levers, 5 shift shafts, 6 levers, 7 piston rods, 8 working cylinders, 9 and 10 levers, 11 spindle nuts, 12 screw spindles, 13 adjusting drive devices, 14 and 15 barrels, 1
6 levers, 17 entrainers, 18 worm gears,
19 worm, 20 swivel joint, 21 telescope shaft, 22 position adjustment drive, 23 pin,
24 slides, 25 grooves

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ulrich Jung Germany Federal Republic of Limburg Frank Furtherstraße 65 Ar (72) Inventor Manfred Herold Germany Federal Republic of Heinburg Eichchenstrasse 8

Claims (7)

[Claims] 1. An adjusting device for a cylinder in a printing device of a printing press, in particular for a blanket cylinder or a plate cylinder in a printing device or varnishing device of a sheet offset printing press, the cylinder being respectively at both ends. Through one eccentric bearing, which is arranged rotatably in the side frame of the printing device, it is mounted in a positionally adjustable manner with respect to another cylinder and is common to both end eccentric bearings. Of the type in which the actuating device is provided for rotating the bearings at both ends simultaneously, it belongs to one eccentric bearing (1) and is connected behind the operating device (5-13) and The side frame is provided with an adjusting device (16-19) connected to a fixed position adjusting drive device (22) by which one eccentric bearing (1) is eccentric bearing (1) the other.
Adjusting device for a printing press cylinder, characterized in that it is rotatable relative to one another. 2. A displacement shaft (5) for connecting the eccentric bearings (1) at both ends of the cylinder (14) to each other by an operating device (5 to 13) and extending between lateral frames on both sides of the printing device. )
Adjusting device according to claim 1, characterized in that the adjusting device (16-19) is arranged at one end of the offset shaft (5). 3. A displacement shaft (5) at the other end,
It is connected to the eccentric bearing (1) at the other end of the body (14) via a lever (4) and a connecting member (3) which are non-rotatably connected to the shift shaft (5) The shaft (5) is supported at one end on one side of the body (14) via a lever (16) and a connecting member (3) which are rotatably supported relative to the shift shaft (5). It is connected to the eccentric bearing (1) at the end, and the lever (16)
A driver (1) that is non-rotatably connected to the shift shaft (5).
7. Adjustment device according to claim 2, characterized in that it is rotatable relative to (7). 4. A worm (19) in the driver (17).
A worm gear (18) having an eccentric pin is provided on the side facing the lever (16) rotatably supported relative to the shift shaft (5). 23. An eccentric pin, characterized in that it is engaged in a hole in a slider (24) which is movable in a groove (25) in a lever (16). 3. The adjusting device described in 3. 5. The adjusting device (16-19) is connected via a cardan shaft (20, 21) to a position adjusting drive (22) fixed to the side frame. The adjusting device according to any one of 1 to 4. 6. An adjusting mechanism (5) for adjusting the cylinder (14) with respect to the thickness of the sheet to be printed with respect to the cylinder (15) cooperating with the cylinder (14) by an operating device (5 to 13). 11-13)
And torso (14) cooperating with this torso (14) torso (15)
The adjusting device according to any one of claims 1 to 5, further comprising a switching mechanism (7.8) for crimping / separating from each other. 7. The cylinder (1) in which the adjustment range of the position adjusting drive (22) is associated with the cylinder (14).
5. The method according to claim 1, characterized in that it is set according to a maximum tilt adjustment amount for 5).
The adjusting device according to the item.