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Improved sheet running control

A sheet and process technology, applied in the field of sheet travel monitoring, can solve problems such as the consumption of parameters of the machine torsion model, and achieve the effect of reducing time consumption

Pending Publication Date: 2021-05-28
海德堡印刷机械知识产权股份两合公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the torsion of the machine and due to the dependence of several parameters (e.g. machine load, whether it is working under pressure, temperature, etc.) Executed individually for each machine sample tolerance

Method used

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Embodiment Construction

[0029] As in the prior art, a system of activation sensor 2 and sheet travel measuring sensors 1a, 1b is used, which is controlled by a computer. Here, a system of two sensors is used, which consists of the original sheet travel sensors 1a, 1b (hereinafter only referred to as measuring sensors), which detect the excess of the sheet 7 in the gripper, and The sensor 2 and the reflector 6 in the drum, on which an optical or ultrasonic signal is reflected for the measurement, are activated. This system is in figure 1 Shown in , this is more precisely for the measurement 4 in the absence of a sheet, where the corresponding reflected signal thus indicates that no printing sheet 7 is present. on the other hand, figure 1 Measurement 3 is shown in the presence of a sheet, the signal being scattered by the sheet so that this measurement indicates the presence of a printing sheet 7 . However, for the system to function correctly, the activation sensor 2 must be adjusted absolutely cor...

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Abstract

A method for computer-aided sheet running control in a sheet-fed printing machine includes, during a printing operation, using a measuring sensor 1a, 1b to detect a printed sheet 7 in the printing machine and using an activation sensor 2 to initiate measuring performed by the measuring sensor 1a, 1b by emitting an activation signal 20. The activation sensor 2 is mechanically fixedly installed without adjustment, and temporal deviations of the activation signal 20 are determined and compensated.

Description

technical field [0001] The invention relates to a method for improved sheet travel monitoring in a sheet printing press by means of mechanically fixedly mounted activation sensors. [0002] The invention belongs to the technical field of sheet conveying in printing machines. Background technique [0003] The sheet travel monitoring of a sheet printing press has the function of detecting sheet losses in a printing unit or between several units in order to avoid soiling of the machine due to the impression of the corresponding printing cylinder or in extreme cases The machine is damaged. For this purpose, a system consisting of two types of sensors is used today: the detection of the excess of the sheet in the gripper , the original sheet-advance sensor, and also includes the activation sensor. Such an activation sensor triggers the measurement of the sheet travel sensor at a defined angle in that it detects a co-rotating marking on the drum and can itself be moved in the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41F33/14B41F33/16
CPCB41F33/14B41F33/16B41J13/0009B41J11/0095B41F21/10
Inventor S·克瑙夫H·布克J·里茨V·希默尔斯巴赫M·雅诺恰J·舒尔特T·佩斯勒
Owner 海德堡印刷机械知识产权股份两合公司
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