Modular Sheet-Fed Printing Unit for Securities
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Solution Overview
Problem
Sheet-fed printing presses face high costs and inefficiencies due to the need for multiple specialized printing units for different processes, requiring frequent changes and purchases, especially in securities printing where precise register and color register are critical.
Innovation Solution
A modular sheet-fed printing unit design allowing for the same basic structure to be used for various printing processes, with cylinders arranged to minimize space and ensure precise sheet transport, enabling flexible adaptation and expansion of printing presses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple specialized printing presses are purchased for different printing processes, then the capability to handle various securities printing requirements is improved, but the cost and device complexity increase significantly
Solution Approach 1:
The patent applies universality by designing a single printing press that can perform multiple printing processes (offset printing, letterpress printing, screen printing, gravure printing, flexographic printing, and numbering) through interchangeable forme cylinders. This eliminates the need for multiple specialized printing presses while maintaining the capability to handle various securities printing requirements.
Solution Approach 2:
The patent applies segmentation by dividing the printing press into modular components, particularly the interchangeable forme cylinders that can be quickly replaced to change printing processes. This modular design allows the system to adapt to different printing requirements without replacing entire printing presses.
2Adaptability or versatility
If printing presses are frequently replaced or additional presses are purchased for design changes, then the ability to produce different securities designs is improved, but the time and cost losses increase
Solution Approach 1:
The patent applies dynamics by implementing a dynamic configuration system where forme cylinders can be quickly interchanged based on production requirements. This allows the printing press to adapt to different securities designs without the downtime associated with replacing entire printing presses.
Solution Approach 2:
The patent applies preliminary action by preparing multiple interchangeable forme cylinders in advance, each configured for a specific printing process. When a design change is needed, the appropriate pre-prepared forme cylinder is already available for quick installation, eliminating preparation time.
3Adaptability or versatility
If multiple specialized printing presses are purchased, then the coverage of printing process requirements is improved, but the cost per unit increases
Solution Approach 1:
The patent applies universality by creating a single multi-functional printing press that can perform all required printing processes through interchangeable forme cylinders. This consolidates what would otherwise require multiple specialized presses, reducing capital expenditure and cost per unit while maintaining full coverage of printing process requirements.
4Ease of operation
If a modular printing unit design is used, then the flexibility and ease of retrofitting is improved, but the initial device complexity increases
Solution Approach 1:
The patent applies segmentation by designing the printing press as a collection of standardized modular components, particularly the interchangeable forme cylinders and standardized mounting interfaces. This modular architecture simplifies retrofitting and expansion activities despite the inherent complexity of the modular structure itself.
Solution Approach 2:
The patent applies parameter changes by standardizing key parameters such as cylinder circumferences, mounting dimensions, and drive interface specifications. These standardized parameters enable different modular components to work together seamlessly, making retrofitting and expansion easier despite the modular complexity.
Data Source
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AI summary
The invention relates to a sheet-fed simultaneous printing machine (200) which has two directly interacting collector cylinders (201; 202) with respective axes of rotation (216; 217), wherein an axial plane (E1) contains these axes of rotation (216; 217) and wherein a reference plane (E2) contains an axis of rotation (216; 217) of this type and has a horizontal surface normal, and wherein the intersection angle between the axial plane (E1) and the reference plane (E2) is max 0.5°, and wherein the sheet-fed simultaneous printing unit (200) has exactly four plate cylinders (203; 204; 206; 207), of which two are arranged such that they directly interact with the first and two are arranged such that they directly interact with the second collector cylinder (202); and wherein an inking unit (227) with a respective ink supply (231) is arranged in each plate cylinder (203; 204; 206; 207) and a supply sectional plane (S3) is determined for each ink supply (231), which intersects this ink supply (231) and also contains the axis of rotation (222; 223; 224; 226) of the corresponding plate cylinder (203; 204; 206; 207), and wherein an intersection angle between the reference plane (E2) and a supply sectional plane (S3) of the respective ink supply (231) is max. 35°, as well as a sheet-fed machine (01) comprising at least one sheet-fed printing unit of this type, as well as a sheet-fed printing unit (03; 200; 500; 600; 700) comprising two directly interacting impression cylinders (201; 202; 501; 502; 601; 602; 701; 702), wherein the intersection angle between the axial plane (E1) on one side and the reference plane (E2) on the other side is max. 45°.