Ink mist suction carried out by means of air humidity sensor

An air humidity and sensor technology, used in printing, rotary printing machines, printing machines, etc., can solve problems such as non-compliance with functional requirements, failure to be detected in time, and reduced performance of suction equipment

Pending Publication Date: 2020-10-20
HEIDELBERGER DRUCKMASCHINEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] Additional problems arise from incorrectly cut filter sizes and from impermissible filter types that do not fit properly into the fastening system and / or are inserted incorrectly into the fastening system, The impermissible filter type then does not work functionally due to the wrong filter type (for example with wrong pore size)
This results in huge ink deposits which quickly lead to a complete loss of function and have to be removed by laborious cleaning work
[0014] The major disadvantage of the described prior art is therefore that no solution available enables a continuous monitoring of the intended function of the ink mist suction device during printing operation, so that clogged filters and other problems that degrade the performance of the suction equipment are not detected in a timely manner

Method used

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  • Ink mist suction carried out by means of air humidity sensor
  • Ink mist suction carried out by means of air humidity sensor
  • Ink mist suction carried out by means of air humidity sensor

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Embodiment Construction

[0039] The basis of the invention is based on the experimental measurement knowledge that a significantly higher air humidity value 11 is present in a non-operating ink mist suction device 6 than the air humidity value 12 in normal operation. In the case of a damaged or poorly maintained suction device 6 , the suction performance is reduced and the ventilation of the printing unit 1 is considerably worse. Due to this poor ventilation, the air humidity values ​​11 , 12 in the printing unit 1 rise strongly.

[0040] The core of the invention therefore lies in the functional monitoring of the ink mist suction device 6 by means of the continuous monitoring of the relative air humidity 11 , 12 during the printing operation by means of the air humidity sensor 7 . The height of the measured values ​​11 , 12 is detected and evaluated accordingly. This enables computer-supported forecasting or trend analysis 21 in order to display limit value states 23 in good time.

[0041] Starting...

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PUM

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Abstract

A method for performing ink mist extraction in printing units (1) of an offset printing machine by means of a computer (25), the printing units (1) having an ink mist extraction device (6) which is set up so that it generates an air flow and occurs during a printing process Sucks ink droplets out of the printing unit (1) and deposits them in an ink mist filter (6c), characterized in that the computer (25) records and analyzes parameters of the printing unit (1) and the ink mist suction device (6) and thus the state of the ink mist suction device (6) supervised.

Description

technical field [0001] The invention relates to a method for performing ink mist extraction in a printing unit of an offset printing press. [0002] The invention is in the technical field of offset printing. Background technique [0003] Conventional printing units without ink mist suction are usually equipped with shields that have a plurality of openings. These openings allow the operator to have a degree of visual inspection of the process in the printing mechanism. In addition, these permeable protective panels allow good ventilation of the printing unit, since the warm air and the air humidity contained therein can escape. [0004] Printing units with active ink mist suction are equipped with protective panels that have no or only a small number of ventilation slots. This type of encapsulation prevents ink mist generated during the printing process from escaping from the printing unit and contaminating the surroundings (or burdening the breathing air). In this case...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41F13/42B41F22/00
CPCB41F13/42B41F22/00B41F23/002B41F31/001
Inventor D·沙夫拉特C·迈尔M·施万特P·海勒尔
Owner HEIDELBERGER DRUCKMASCHINEN AG
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