Side-Mounted Strip Seal for Positioning Stage Support
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Solution Overview
Problem
Positioning stages are susceptible to contaminants, vibration, and sagging due to inadequate protection and support, leading to wear and maintenance challenges, especially with conventional top-mounted strip seals and re-circulating belts.
Innovation Solution
A side-mounted pass-through strip seal with a flexible axial direction and rigid lateral direction is used to support the cover plate and reduce vibrations, coupled to the base and cover using magnetic coupling, and low-friction materials are employed to mitigate friction and contamination exposure, with air flow and contaminant-capturing materials further enhancing protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional top-mounted strip seals are used, then protection from particles is improved, but debris accumulation on seals and maintenance requirements worsen
Solution Approach 1:
The strip seal is inverted from the conventional top-mounted configuration to a side-mounted configuration. This inversion allows the seal to be positioned where debris accumulation is minimized while maintaining particle protection capabilities, thereby reducing maintenance requirements without sacrificing protective function
2Object-affected harmful factors
If the stage is enclosed to protect from contaminants, then contamination protection is improved, but accessibility of the slide worsens
Solution Approach 1:
The enclosure is segmented into distinct zones with controlled access points. The side-mounted seal creates a localized sealing interface that allows the slide to pass through while maintaining overall enclosure integrity. This segmentation enables the slide to access the enclosed space without compromising the contamination barrier
3Object-affected harmful factors
If conventional protection schemes are used, then some level of protection is achieved, but vibration and sagging mitigation worsens
Solution Approach 1:
The side-mounted strip seal serves multiple functions simultaneously: it provides contaminant protection through magnetic attraction, reduces vibration through magnetic coupling to the enclosure, and prevents sagging through proper structural support. This multi-functionality achieves contaminant protection while concurrently improving structural stability without requiring separate dedicated components for each function
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 effectively reduces contaminant ingress, supports the stage to prevent sagging, and minimizes vibrations, thereby enhancing the performance, efficiency, and operational life of positioning stages while reducing maintenance needs.
Implementation Method 1
coupled to the base and cover using magnetic coupling
Implementation Method 2
low-friction materials are employed to mitigate friction and contamination exposure
Data Source
AI summary
A system and method for mounting the strip seal on the side of a pass-through positioning stage. The strip seal can effectively provide support to a cover of the stage and be magnetically coupled to the cover and base for an enhanced seal and added support. Accordingly, the tendency for the stage to sag and vibrate during operation is mitigated. Moreover, a side-mounted strip seal is exposed to a reduced amount of debris that accumulates on the top of a stag, and thus is less susceptible to contaminants entering the interior of the stage. As such, and in connection with a variety of other means for reducing contamination, the stage can operate for longer periods of time without wear and/or maintenance, etc.