DD222831A1 - DRIVE DEVICE FOR ROLL DISKING IN PRINTING MACHINES - Google Patents

Abstract

Drive device for roll separation in printing presses for switching a doctor shaft in four angular positions in order to automatically divide the inking unit in several Teilfarbstraenge at print interruptions. The object of the invention is to contribute to the reduction of the setup time for the printing press and to increase the ease of use. The task of creating a drive device for printing presses, whereby the doctor shaft by means of simple aids in several angular positions, from a control panel, is movable, is achieved in that a six-member planar coupling gear is arranged on two hydraulic cylinders, the output member via a drive gear with a gear of the doctor shaft is connected. figure

Description

VEB Combine, Polygraph

'' Werner Laniberz '' Lei ρ ig ig

7050 Leipzig · Leipzig, 1.8.12.1983

Title of 'marriage'

'Drive device for roll separation in printing machines

Field of application of the invention -.

The invention relates to a drive device for roller separation in printing machines, whereby the ink fountain device can be divided in pressure into a plurality of interruptions Teilfarbstraenge starting from a squeegee shaft through a transmission: The Erfindung'ist principle also applicable for cycles before sticking in different kind of machines.

Characteristic of the known technical solutions

In modern inking units on offset printing machines, several operating periods must be realized, which depend on several factors. In detail, such factors as color change (ratio of printing area to non-printing area,), color distribution shouted the degree of contamination of the color '

Even short-term and longer printing interruptions require a certain roller constellation, in order to prevent a color balance within the inking unit or an over- 'saettigen single inking rollers,. Adjusting the inking unit to the various operating conditions is done in most cases .from a job. Walzenabstellmechanismus over one or more gearbox whose output members affect certain Farbwerkswal z ^N en in their position and 'an actuating or doctor blade shaft. ''. According to the operating condition, the control shaft according to DD-PS 124 643.'in four positions, switchable. The four angles of the y-axis are adjusted manually with the help of a lever arranged on the squeegee welder. In DD-PS 124 643 Although an automatic movement release of the hand lever erwaehnt,. but, ways and means of realization are not revealed. , The manual adjustment of the doctor blade shaft has the skill that not all dyeing units of a multicolour sheet-fed rotary printing press can be adjusted together, thus favoring different color distribution ratios within the individual inking units, and, on the other hand, negatively affecting the printing machine's ease of use. '

Object of the invention

The aim of the invention is a. To provide drive means for roll separation in printing presses, which is contributed to the reduction of the set-up time of the printing press and, in order to increase the ease of use.

Object of the invention '.' ...- ->

The object of the invention is to provide a drive device for roll separation in printing machines, which

the squeegee shaft by simple tools in several positions automatically, from an operating point, is movable.

Essence of the invention

According to the invention, the object is achieved by arranging a six-link planar coupling mechanism on two hydralic cylinders, of which Output member is connected via a drive gear with a gear of the doctor shaft

 In a particularly advantageous manner, the circuit of the doctor shaft is achieved in four angular positions with a minimum of components and with simple hydraulic components, whereby a remote control is enabled, which contributes significantly to the ease of operation, friendliness of the device.

Ausfuehrungsbeispiel

The invention will be explained in more detail with reference to a Ausfuehrungsbeispieles.

The Zugehoerige drawing shows a rotatably mounted in the machine frame doctor blade shaft 1, which is fixedly connected to a wash blade 2 and a gear 3. At a distance corresponding to the length of the washing doctor blade 2, a Farbreibsylinder 4, the further, not shown Färbwerkwalzen are arranged downstream; arranged. By means of a bolt 5 is also on the gear 3 and thus on the doctor shaft 1, a gear member 6 rotatably mounted. The drive element 6 is the drive element of an already proposed roller setting device and for this reason is not shown, whose output elements are connected to three movable inking rollers. - .., .. A rotatably mounted in the machine frame drive gear 7 is formschlüssig connected to the gear 3. A driven member 8 rotatably mounted on the drive gear 7 is a first

Intermediate member 9 movably connected to a first piston rod 10 of a first hydraulic cylinder 11. The output member 8 is also movably connected via a second intermediate member 12 to a second piston rod 13 of a second hydraulic cylinder U. The gear members 8, 9, 10, 12, 13 and the frame form a six-membered planar coupling mechanism with two degrees of freedom ·

In the hydraulic cylinders 11, 14, a compression spring 15 is arranged in each case. The single-acting hydraulic cylinder 1Ί and 14 are connected via known elements of the hydraulic system with the Oelversorgungssystein the machine. By pressing the button, (4 buttons), the pressure is applied to the hydraulic cylinders 11 and 14. ' * :

The mode of action is the following:

According to the various operating conditions of the inking unit, the squeegee shaft 1 must realize different angular positions. '. , '

The piston rods 10, 13 connected to the hydraulic cylinders 11, 14 each have two end positions I-II and A-B. When the pressure is relieved, the piston rods 10, 13 are pressed by the compression springs 15 into their starting position,. , Which of the respective position is approached depends on whether the hydraulic cylinders 11, 14 are pressurized or not. This is done via the well-known and therefore not shown four buttons that are integrated in the control panel of the printing press. · *

Since the six-membered coupling gear 8, 9, 10, 12 and 13 thus, two .Antriebsglieder in the form of the piston rods 10, 13 has, the output member 8 may have four positions. According to the drawing they correspond to the four combinations;

 A II Cylinder 11 without pressure - Cylinder.14-under pressure · B.II Cylinder 11 without pressure - Cylinder 14 without pressure

A I cylinder 11 under pressure - cylinder 14 under pressure BI cylinder 11 under pressure - cylinder 14 without 'pressure

On the other hand, the drive gear 7, which contributes to the Drehwinkelvergroesserung the doctor shaft 1, according to the desired position, the doctor shaft 1 and thus on the gear member 6 and the roller adjusting device moves the corresponding rollers of the inking unit. · The individual positions of the drive gear 7 correspond to the following operating states: '

A II inking unit, wash - Washcloth 2 to Farbreibzylind, he 4

employed

B II Infeed of the inking unit AI Äutomätikstellung - in Druckuhterbrechung appropriate

Color orphans parked B I Automatic with compensation groups

The gear members 8, 9, 10, 12, 13 of the six-link coupling gearbox were set so that the cylinders 11 and 14 take up almost no transverse forces rouessen, but are loaded only in the axial direction.

Claims (1)

Erfindungsanspruch- 1. Drive device for roll separation in printing presses, consisting of a doctor blade shaft and a roller setting device connected thereto, characterized in that a six-link planar coupling mechanism (8, 9, 10, 12 and 13) is arranged on two hydraulic cylinders (11, H), the output member (8) via a drive gear (7) with a gear (3) of the doctor shaft (1) is connected. For this 1 sheet drawing