Rotary Printing Press Roller Adjustment via Topography Scanning

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Solution Overview

Problem

Conventional rotary printing presses require significant human intervention and result in substantial waste during the adjustment of rollers, leading to inefficiencies in the start-up phase of print runs, especially in high-speed operations.

Innovation Solution

A method involving the scanning of a roller's topography in a preparation rack to derive set data for adjustment, allowing for direct control of adjustment parameters, eliminating the need for try-and-error processes and reducing waste and time during the start-up phase.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If conventional electronic control with visual inspection is used for roller adjustment, then human assessment capability is utilized, but waste material increases and adjustment time extends

Engineering Contradiction:

Improvevisual inspection accuracyVSAvoidwaste material

Core Design Contradiction:

Measurement precisionVSLoss of substance

Solution Approach 1:

The patent replaces the mechanical/visual inspection system with an electronic measurement system. A sensor device automatically measures roller parameters such as diameter, roundness, and surface profile, substituting human visual assessment with electronic detection and data processing, thereby eliminating waste material while maintaining measurement precision.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system enables self-adjustment of rollers through automated measurement and control. The sensor device continuously monitors roller parameters and the control system automatically adjusts roller positions and pressures without human intervention, allowing the printing press to self-optimize during operation and eliminate waste material.

Inventive Principle:

Principle #25Self-service

2Ease of operation

If manual try-and-error adjustment is performed, then human expertise is applied, but productivity decreases and time is lost

Engineering Contradiction:

Improvehuman expertise utilizationVSAvoidprint run efficiency

Core Design Contradiction:

Ease of operationVSProductivity

Solution Approach 1:

The patent replaces manual adjustment operations with automated electronic control systems. Sensors measure roller parameters and the control system automatically calculates and applies adjustments, substituting human expertise with electronic intelligence, thereby eliminating time loss and increasing productivity while maintaining operational ease.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system implements continuous feedback loops where sensors monitor roller parameters in real-time, the control system processes this data, and automatic adjustments are made based on measured deviations from optimal values. This closed-loop feedback eliminates the need for manual try-and-error adjustment, increasing productivity while maintaining ease of operation through automated decision-making.

Inventive Principle:

Principle #23Feedback

3Speed

If automated pressure setting is implemented, then adjustment speed increases, but waste production remains significant

Engineering Contradiction:

Improveadjustment speedVSAvoidwaste material

Core Design Contradiction:

SpeedVSLoss of substance

Solution Approach 1:

The patent replaces automated pressure setting with a comprehensive electronic measurement and control system that measures actual roller geometric parameters (diameter, roundness, profile) and uses this data to calculate precise adjustment requirements. This substitution enables both rapid adjustment and elimination of waste material through accurate first-time setting.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The system performs preliminary measurement and calculation of adjustment parameters before actual printing begins. Sensors measure roller characteristics in advance, the control system calculates optimal settings, and adjustments are applied before production starts, enabling both rapid setup and zero waste material through accurate preliminary configuration.

Inventive Principle:

Principle #10Preliminary action

4Device complexity

If visual inspection methods are used, then simple equipment is required, but measurement precision is insufficient

Engineering Contradiction:

Improveequipment simplicityVSAvoidroller parameter accuracy

Core Design Contradiction:

Device complexityVSMeasurement precision

Solution Approach 1:

The patent replaces simple visual inspection equipment with electronic sensor devices that automatically measure roller parameters. The sensor system detects diameter, roundness, surface profile, and other geometric characteristics with high precision, substituting simple but inaccurate visual methods with electronic measurement tools that provide both accuracy and automated data processing.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS8534194B2Rotary printing press and method for adjusting a cylinder thereof

Publication Date: 2013.09.17 BOBST BIELEFELD

AI summary

A method of adjusting a roller (18) in a rotary printing press (10), includes the steps of a) mounting the roller (18) in a preparation rack (24) so as to be rotatably supported therein, b) scanning the peripheral surface of the roller, thereby to detect a topography of the roller surface, c) deriving set data for the adjustment of the roller from the topography, and storing the set data, d) mounting the roller in the printing press (10), and e) adjusting the roller in accordance with the set data.