Shedding Machine Sealing Barrier Design
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Solution Overview
Problem
Existing shedding machines for looms face challenges in maintaining effective sealing at high speeds, leading to lubricant leaks due to the movement of output levers and actuating rods, which can result in oil splashes and soiling of the fabric being woven.
Innovation Solution
A shedding machine design featuring a continuous sealing barrier with radial and lateral portions that securely contacts the output levers, ensuring a tight seal around the periphery, even during high-speed oscillations, using a combination of sealing gaskets and interlocking means to prevent lubricant leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If output levers are moved at high speed during weaving, then productivity is improved, but lubricant leakage increases causing oil spray and fabric soiling
Solution Approach 1:
The sealing barrier is divided into multiple portions: a first sealing barrier with radial and lateral portions, and a second sealing barrier with corresponding portions. These segmented barriers work together to create a comprehensive sealing system that addresses leakage from multiple directions simultaneously, preventing lubricant escape while allowing high-speed lever movement.
Solution Approach 2:
The sealing barriers are nested within the machine structure, with the first sealing barrier positioned between the outer casing and the first output lever, and the second sealing barrier positioned between the outer casing and the second output lever. This nested arrangement integrates the sealing function into the existing mechanical structure without adding external complexity.
2Reliability
If sealing barriers are added to prevent lubricant leakage, then reliability is improved, but device complexity increases
Solution Approach 1:
The sealing barriers serve multiple functions: they seal against lubricant leakage, accommodate the oscillating motion of output levers, and integrate with the outer casing structure. By designing the barriers to perform multiple functions simultaneously, the invention reduces the need for separate components and minimizes overall structural complexity while maintaining reliable sealing.
Solution Approach 2:
The sealing barriers are designed as flexible elements that can deform to accommodate the oscillating motion of the output levers while maintaining the seal. This flexibility allows the barriers to adapt to dynamic positioning without requiring complex rigid structures, simplifying the overall design while ensuring reliable sealing throughout the motion cycle.
Data Source
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AI summary
This crowd-forming machine (2) includes exit levers (32), each comprising a first flank (42), a second flank (40), a first section, and a second section; a common shaft (10) on which the exit levers are mounted; a drive means for the exit levers; an outer casing (12) through which the exit levers pass; a frame (6); and at least one first sealing barrier (120) interposed between the outer casing and a first lever among the exit levers (32). The first sealing barrier (120) comprises a radial portion that is in watertight contact with either the first or second section; a first lateral portion that is in watertight contact with the first flank (42); and a second lateral portion that is in watertight contact with the second flank (40).