Modular Printing Press Segmentation for Thick Substrate Registration
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Solution Overview
Problem
Conventional sheet-fed printing machines face challenges in maintaining high print quality and flexibility when processing thick or deformable substrates, such as corrugated cardboard, due to limitations in register maintenance and substrate deformation during printing.
Innovation Solution
A modular sheet-fed printing press with independently controlled modules, including non-impact coating and drying units, features a flexible transport path and positioning system to ensure precise registration and prevent substrate deformation, using suction belts and position-controlled electric motors for efficient substrate handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional transport systems are used for sheet-fed printing presses, then the machine structure is simple, but they cannot handle particularly thick sheets without deformation and cannot maintain precise registration
Solution Approach 1:
The printing press is divided into multiple independently controllable modules (printing units, drying units, transport units) that can be individually adjusted and controlled. This segmentation allows each module to be optimized for handling thick sheets while maintaining overall registration precision through coordinated control of all modules.
Solution Approach 2:
The transport system incorporates dynamically adjustable components including variable speed motors and controllable transport paths that can adapt their motion characteristics based on substrate thickness and deformation properties, enabling precise registration while accommodating thick sheet handling.
2Speed
If substrate is accelerated through multiple acceleration means, then printing speed is improved, but substrate deformation occurs during acceleration
Solution Approach 1:
The acceleration system uses dynamically controllable motors that can adjust acceleration profiles based on substrate properties. The transport path includes sections that can be independently controlled to provide gradual, staged acceleration rather than sudden force application, reducing deformation while maintaining high printing speeds.
Solution Approach 2:
The system changes operational parameters (acceleration rate, transport speed, motor torque) based on detected substrate characteristics. By adjusting these parameters dynamically, the system achieves high printing speeds while preventing substrate deformation through optimized acceleration profiles.
3Manufacturing precision
If modular design with independently controlled modules is implemented, then adaptability and print quality are improved, but device complexity increases
Solution Approach 1:
The system is segmented into standardized modular units (printing modules, drying modules, transport modules) that can be independently controlled but are designed with uniform interfaces and control protocols. This segmentation enables high print quality through precise individual module control while managing complexity through modular standardization.
Solution Approach 2:
The independently controlled modules are designed with universal functionality and standardized interfaces, allowing them to perform multiple operations and be controlled through a unified control system. This universality reduces the overall system complexity despite the modular architecture by enabling coordinated operation of all modules through common control mechanisms.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enhances print quality by maintaining precise registration and preventing substrate deformation, allowing for the processing of thick sheets while reducing repair and cleaning costs through modular design and advanced drive control systems.
Implementation Method 1
a first substrate transport means (111) in the form of a suction belt
Data Source
Figure 1
Figure 2a
Figure 2b
AI summary
The invention relates to a printing press which has at least two units (400; 600; 800) in the form of modules (400; 600; 800), at least one of which is in the form of a non-impact coating module (600) and has at least one printhead (616). The at least two modules (400; 600; 800) each have at least one dedicated drive (M400; M600; M800) which is used to effect transport of substrate through the module (400; 600; 800) in question and/or the effective region thereof. Along an intended transport path, there is at least one first application point (618), provided for coloured coating agent, of at least one non-impact coating module (600), and then an effective region of at least one drying device assigned to the first application point (618), and then at least one further application point (618), provided for coloured coating agent and preferably oriented towards the same side, of at least one non-impact coating module (600), and then an effective region of at least one further drying device assigned to the further application point (618). At least one printhead (616) is preferably connected and/or connectible to at least one positioning device, and the at least one positioning device preferably has at least one positioning drive.