Direct-Drive Alignment Segments for High-Speed Substrate Processing
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Solution Overview
Problem
Existing processing machines face challenges in maintaining high-quality alignment of substrates due to changes in positioning along the transport path, particularly due to high machine speed and vibrations, which existing alignment devices are unable to adequately address, especially in correcting lateral displacements and skewed positions.
Innovation Solution
The implementation of an alignment segment with dedicated direct drives that axially adjust transport sections, allowing for precise alignment of substrates in both the transport and transverse directions, using sensors to detect image-producing elements for customized alignment adjustments, and incorporating main and dedicated drives for independent control of axial and rotational movements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high machine speed is used to increase productivity, then processing speed increases, but substrate alignment accuracy deteriorates due to vibrations and positioning changes
Solution Approach 1:
The system employs sensors to detect the position of image-producing elements on the substrate and feeds this information back to the control system. The control system then adjusts the transport sections and processing units based on this feedback to maintain alignment accuracy even at high processing speeds up to 15,000 sheets per hour.
Solution Approach 2:
The invention implements dynamically adjustable transport sections with independent drives that can adapt their position and speed in real-time. This dynamic adjustment capability allows the system to compensate for vibrations and positioning changes that occur at high machine speeds, maintaining alignment precision throughout the processing path.
2Device complexity
If conventional alignment devices are used, then device complexity is low, but the ability to correct lateral displacements and skewed positions is insufficient
Solution Approach 1:
The alignment system is divided into multiple independent transport sections, each with its own dedicated drive. This segmentation allows individual sections to be adjusted independently to correct specific alignment issues such as lateral displacements or skew, providing precise correction capability without requiring an overly complex monolithic device.
Solution Approach 2:
The transport sections are designed with multi-functionality, capable of performing both substrate transport and alignment correction functions. Each transport section can execute axial adjustments for lateral displacement correction and rotational adjustments for skew correction, reducing the need for separate specialized devices while maintaining low overall complexity.
3Manufacturing precision
If axial adjustment of transport sections is implemented, then transverse direction alignment improves, but mechanical wear increases
Solution Approach 1:
The system replaces continuous mechanical contact adjustment mechanisms with a sensor-based detection and controlled adjustment system. Image-producing element detection and sensor feedback reduce reliance on mechanical wear-prone components while achieving precise transverse direction alignment through controlled, minimal-movement adjustments of transport sections.
Data Source
AI summary
Examples include activating at least one alignment segment of a processing machine. The at least one alignment segment is arranged before at least one processing unit of the processing machine that is activated. The at least one alignment segment includes a plurality of transport sections following one another in the transport direction. At least two transport sections, following one another in the transport direction, each have a basic position and at least one adjustment position. The at least one adjustment position in each case is offset relative to the basic position in the transverse direction. At least one transport section of the transport sections is axially adjusted. At least one dedicated drive axially adjusts the at least one transport section of the transport sections, and the at least one dedicated drive is designed as a direct drive.