Multi-Piece Slit Valve Gate With Clamp-Aligned Replaceable Seal
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Solution Overview
Problem
Conventional slit valve gates have seals that are over-molded to the base portion, making them difficult to replace and apply protective coatings to, leading to increased equipment downtime and costs.
Innovation Solution
A multi-piece slit valve gate design featuring a base portion, a seal portion, and a clamp portion, where the seal can be individually replaced and the components can be coated separately, enhancing sealing capabilities and reducing maintenance costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If seals are over-molded to the base portion, then sealing capability is improved, but ease of repair deteriorates
Solution Approach 1:
The gate assembly is divided into separate components: a base portion, a seal portion, and a clamp portion. The seal is no longer permanently over-molded to the base, but can be independently removed and replaced by loosening the clamp portion, allowing easy maintenance while maintaining sealing capability.
2Reliability
If seals are over-molded to the base portion, then sealing capability is improved, but ease of manufacture deteriorates
Solution Approach 1:
By separating the seal portion from the base portion, the base can be manufactured and coated independently without the constraints of over-molded seals. This allows for easier application of protective coatings to the base surface without complex masking or additional molding steps.
3Ease of repair
If multi-piece design is implemented, then ease of repair is improved, but device complexity increases
Solution Approach 1:
The gate is segmented into three main portions (base, seal, clamp) connected through simple coupling mechanisms. While this increases component count, the coupling methods are straightforward and enable easy assembly/disassembly for maintenance, improving repairability despite the additional components.
Solution Approach 2:
The clamp portion serves multiple functions: it secures the seal to the base, provides alignment through angled features, and enables easy removal of the seal. By combining these functions into a single component, the overall complexity is managed despite the multi-piece design.
Data Source
AI summary
Disclosed is a slit valve gate. The slit valve gate includes a base portion configured to couple to a slit valve actuator and includes a first angled alignment feature. The slit valve gate further includes a seal portion coupled to the base portion. The seal portion is configured to create an airtight seal between the slit valve gate and a sealing surface of a slit valve opening. The slit valve gate further includes a clamp portion coupled to the base portion. The clamp portion includes a second angled alignment feature configured to interface with the first angled alignment feature of the base portion to align the clamp portion with respect to the base portion. The clamp portion retains the seal portion at least partially between the clamp portion and the base portion.