Job Change Optimization for Printing Presses
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Solution Overview
Problem
Conventional printing presses have fixed procedures for job changes, leading to inefficient and identical set-up and downtimes between print jobs, which cannot be optimized for single changes without prior knowledge of subsequent jobs.
Innovation Solution
A method and device using a control computer to compare data from the current and subsequent machine jobs, allowing for dynamic optimization of the order of operations during a job change, considering available personnel and machine components, and providing visual or acoustic guidance to minimize downtime.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a fixed procedure is used for job changes, then the procedure is simple to follow, but the set-up and downtime cannot be optimized for single changes
Solution Approach 1:
The patent applies dynamics by transforming the fixed, static job change procedure into a dynamic, adaptive sequence. The control computer automatically determines the optimal operation order based on real-time comparison of current and subsequent job data, allowing the procedure to adapt to each specific job change scenario rather than following a predetermined fixed sequence.
Solution Approach 2:
The system changes parameters by dynamically adjusting the sequence of operations based on job-specific parameters. By comparing data sets of consecutive jobs and analyzing which operations are actually required, the system optimizes the parameter sequence (operation order) to minimize downtime while maintaining procedural simplicity through automated control.
2Stability of the object's composition
If the order of operations is fixed, then the procedure is predetermined and easy to follow, but identical set-up and downtimes occur regardless of actual operations required
Solution Approach 1:
The system performs preliminary action by comparing job data sets and determining the optimal operation sequence before the actual job change begins. The control computer analyzes the current job and subsequent job data, predicts required operations, and establishes the optimized procedure in advance, allowing operations to proceed efficiently without unnecessary steps.
Solution Approach 2:
Feedback is implemented through the automated comparison of job data sets and the dynamic adjustment of operation sequences. The system continuously monitors job change requirements, compares actual operations needed with the determined optimal sequence, and adjusts the procedure accordingly, creating a closed-loop system that reduces downtime while maintaining stability.
3Reliability
If operations are performed in a fixed sequence, then the procedure is consistent, but downtime cannot be minimized for specific job changes
Solution Approach 1:
The system applies self-service by enabling the control computer to automatically determine and optimize the operation sequence without requiring external intervention or manual planning. The system serves itself by autonomously comparing job data, analyzing requirements, and generating the optimized procedure, ensuring both consistency and productivity improvement.
Solution Approach 2:
The patent replaces the mechanical, manual procedure planning system with an automated control computer-based system. By substituting the manual determination of operation sequences with automated data comparison and algorithmic optimization, the system maintains procedural consistency while significantly improving machine efficiency and reducing downtime.
Data Source
AI summary
A method for determining the optimum procedure for a job change on a printing-material processing machine (10) with at least one control computer. The data of a first machine job is compared to the data of a subsequent machine job using a control computer, and the comparison is used to establish an order of the operations to be carried out during the job change. Also provided is a device for determining the optimum procedure for a job change on a printing-material processing machine (10) with at least one control computer. The control computer is intended to compare the data of a first machine job to the data of a subsequent machine job, and to use the comparison to establish an order of the operations to be carried out during the job change.