Automatic Error Correction for Simultaneous Two-Axis Paper Cutting
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for cutting graphic substrates on two perpendicular axes simultaneously are limited by the inability to correct skiddings or inaccuracies without external reference marks, particularly for large formats, and cannot ensure precise cutting along the X-axis if the image is not perfectly parallel to the substrate edge.
Innovation Solution
A method that uses detecting means, such as an optic cell, to identify delimitation lines within the image or substrate edge for reference, allowing for automatic correction of cutting paths on both axes without external marks, utilizing rotating blades and motors to align cutting tools based on detected defects and trigonometric processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If standard lateral reference marks are used to determine longitudinal cut position, then cutting precision in longitudinal direction is improved, but device complexity increases due to requirement for external reference marks and corresponding detection systems
Solution Approach 1:
The system uses the image content itself as the reference for cutting, eliminating the need for external reference marks. The detecting means analyzes features within the image to determine cutting positions, allowing the substrate to serve its own positioning function without additional markings.
Solution Approach 2:
The invention extracts the reference function from external lateral marks and integrates it into the image content analysis. By detecting delimitation lines or edges within the image itself, the system removes the dependency on separate reference mark systems.
2Productivity
If digital printing replaces offset technology, then productivity and flexibility are improved, but manufacturing precision deteriorates due to increased skiddings and inaccuracies in large formats
Solution Approach 1:
The system continuously monitors the position of delimitation lines within the image during the cutting process and dynamically adjusts the cutting path accordingly. This feedback mechanism compensates for skiddings and inaccuracies, maintaining precision despite the high-speed digital printing process.
Solution Approach 2:
The cutting system employs dynamic adjustment of cutting paths based on real-time detection of image features. The cutting means can shift positions and angles automatically to correct deviations, adapting to variations in substrate movement and image positioning during high-speed operation.
3Device complexity
If cutting is performed without automatic error correction, then device complexity is reduced, but manufacturing precision deteriorates due to uncorrected skiddings and non-parallel images
Solution Approach 1:
The invention replaces complex mechanical correction mechanisms with an optical-detection-based system. Instead of using mechanical adjustment devices, the system uses detecting means to identify image features and computationally determines the correct cutting paths, substituting mechanical complexity with optical and computational approaches.
4Ease of operation
If transverse cutting is performed without reference marks, then ease of operation is improved, but measurement precision deteriorates due to inability to detect correct cutting line position
Solution Approach 1:
The detecting means serves multiple functions: it detects delimitation lines within the image, determines longitudinal cut positions, and provides reference information for transverse cutting. This multi-functional detection system eliminates the need for separate reference mark systems for both cutting directions.
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
Enables precise simultaneous cutting on two axes with automatic error correction, ensuring accurate cuts even in large formats without the need for external reference marks, enhancing automation in digital printing finishing.
Implementation Method 1
suitable detecting means (9), such as an optic cell, detects the positioning of reference marks (11)
Data Source
AI summary
A method of cutting, simultaneously on two axes (X, Y) perpendicular to each other, of a sheet or web of paper and other graphic or photographic substrates (10) with series of images, comprising the steps of feeding forward the substrate sheet or web (10) to a direction (F), detecting the speed of sheet or web (10) feed and the speed at which the distance is varying between image reference marks (11) and the ideal feed direction, determining a correct cutting line (TX) in a transverse direction to the feed direction (F) of the sheet or web by data processing according to trigonometric relations through a microprocessor to obtain the angle of parallelism defect of the image with respect to the ideal feed forward direction, aligning suitable mobile means (4) of transverse cutting with the desired cutting line (TX) by means (5) for shifting the transverse cutting means.